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<a href="search__impl__base_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/*****************************************************************************/</span><span class="comment"></span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">/*!</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * \file search_impl_base.cpp</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * </span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> * Author: Clark Barrett, Vijay Ganesh (CNF Converter)</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * </span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * Created: Fri Jan 17 14:19:54 2003</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * <hr></span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * License to use, copy, modify, sell and/or distribute this software</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * and its documentation for any purpose is hereby granted without</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * royalty, subject to the terms and conditions defined in the \ref</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * LICENSE file provided with this distribution.</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * </span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * <hr></span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * </span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment">/*****************************************************************************/</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> </div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> </div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#include "<a class="code" href="search__impl__base_8h.html" title="Abstract API to the proof search engine.">search_impl_base.h</a>"</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include "<a class="code" href="theory_8h.html" title="Generic API for Theories plus methods commonly used by theories.">theory.h</a>"</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include "<a class="code" href="eval__exception_8h.html">eval_exception.h</a>"</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include "<a class="code" href="search__rules_8h.html" title="Abstract proof rules interface to the simple search engine.">search_rules.h</a>"</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#include "<a class="code" href="variable_8h.html">variable.h</a>"</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#include "<a class="code" href="command__line__flags_8h.html">command_line_flags.h</a>"</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor">#include "<a class="code" href="statistics_8h.html" title="Description: Counters and flags for collecting run-time statistics.">statistics.h</a>"</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#include "<a class="code" href="theorem__manager_8h.html">theorem_manager.h</a>"</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#include "<a class="code" href="expr__transform_8h.html" title="Generally Useful Expression Transformations.">expr_transform.h</a>"</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#include "<a class="code" href="assumptions_8h.html">assumptions.h</a>"</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> </div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> </div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="keyword">using namespace </span>std;</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> </div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> </div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="keyword">namespace </span>CVC3 {</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> </div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> </div>
<div class="line"><a name="l00040"></a><span class="lineno"><a class="code" href="classCVC3_1_1CoreSatAPI__implBase.html"> 40</a></span>  <span class="keyword">class </span><a class="code" href="classCVC3_1_1CoreSatAPI__implBase.html">CoreSatAPI_implBase</a> :<span class="keyword">public</span> <a class="code" href="classCVC3_1_1TheoryCore_1_1CoreSatAPI.html" title="Interface class for callbacks to SAT from Core.">TheoryCore::CoreSatAPI</a> {</div>
<div class="line"><a name="l00041"></a><span class="lineno"><a class="code" href="classCVC3_1_1CoreSatAPI__implBase.html#a5e73a31f4fe51b66e5a7fd0f799ed6c0"> 41</a></span>  <a class="code" href="classCVC3_1_1SearchImplBase.html" title="API to to a generic proof search engine (a.k.a. SAT solver)">SearchImplBase</a>* <a class="code" href="classCVC3_1_1CoreSatAPI__implBase.html#a5e73a31f4fe51b66e5a7fd0f799ed6c0">d_se</a>;</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keyword">public</span>:</div>
<div class="line"><a name="l00043"></a><span class="lineno"><a class="code" href="classCVC3_1_1CoreSatAPI__implBase.html#a23f5c8b714a78e79204017d6565cf265"> 43</a></span>  <a class="code" href="classCVC3_1_1CoreSatAPI__implBase.html#a23f5c8b714a78e79204017d6565cf265">CoreSatAPI_implBase</a>(<a class="code" href="classCVC3_1_1SearchImplBase.html" title="API to to a generic proof search engine (a.k.a. SAT solver)">SearchImplBase</a>* se) : d_se(se) {}</div>
<div class="line"><a name="l00044"></a><span class="lineno"><a class="code" href="classCVC3_1_1CoreSatAPI__implBase.html#ae93e65ef87f385accf77189dfe21a740"> 44</a></span>  <span class="keyword">virtual</span> <a class="code" href="classCVC3_1_1CoreSatAPI__implBase.html#ae93e65ef87f385accf77189dfe21a740">~CoreSatAPI_implBase</a>() {}</div>
<div class="line"><a name="l00045"></a><span class="lineno"><a class="code" href="classCVC3_1_1CoreSatAPI__implBase.html#a0f161d12f8d1c2c6920e747cc6551be0"> 45</a></span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> addLemma(<span class="keyword">const</span> <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a>& thm, <span class="keywordtype">int</span> priority, <span class="keywordtype">bool</span> atBottomScope)</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  { d_se->addFact(thm); }</div>
<div class="line"><a name="l00047"></a><span class="lineno"><a class="code" href="classCVC3_1_1CoreSatAPI__implBase.html#a5447590e73ee5be03de304fb0925bf58"> 47</a></span>  <span class="keyword">virtual</span> <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a> addAssumption(<span class="keyword">const</span> <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a>& assump)</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  { <span class="keywordflow">return</span> d_se->newIntAssumption(assump); }</div>
<div class="line"><a name="l00049"></a><span class="lineno"><a class="code" href="classCVC3_1_1CoreSatAPI__implBase.html#aa2bdec86d7df97040c41f32b6354b89a"> 49</a></span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> addSplitter(<span class="keyword">const</span> <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a>& e, <span class="keywordtype">int</span> priority)</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  { d_se->addSplitter(e, priority); }</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keyword">virtual</span> <span class="keywordtype">bool</span> check(<span class="keyword">const</span> <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a>& e);</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  };</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> </div>
<div class="line"><a name="l00054"></a><span class="lineno"><a class="code" href="classCVC3_1_1CoreSatAPI__implBase.html#a81efe1d5fd1132b8a4bbea200a51ff48"> 54</a></span> <span class="keywordtype">bool</span> CoreSatAPI_implBase::check(<span class="keyword">const</span> <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a>& e)</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> {</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a> thm;</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keywordtype">int</span> scope = d_se->theoryCore()->getCM()->scopeLevel();</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  d_se->theoryCore()->getCM()->push();</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <a class="code" href="namespaceCVC3.html#a060d21b3207cc3471e24f8dbcff3498b">QueryResult</a> res = d_se->checkValid(e, thm);</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  d_se->theoryCore()->getCM()->popto(scope);</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="keywordflow">return</span> res == <a class="code" href="namespaceCVC3.html#a060d21b3207cc3471e24f8dbcff3498ba24f8f4860dbe6fd65883a9d7cbd2f576">VALID</a>;</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> }</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> </div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> </div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> </div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> }</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> </div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> </div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="keyword">using namespace </span>CVC3;</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> </div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> </div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="comment">// class SearchImplBase::Splitter methods</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> </div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="comment">// Constructor</span></div>
<div class="line"><a name="l00075"></a><span class="lineno"><a class="code" href="classCVC3_1_1SearchImplBase_1_1Splitter.html#a59ee8b0fa0185678e86266e6159bf69a"> 75</a></span> SearchImplBase::Splitter::Splitter(<span class="keyword">const</span> <a class="code" href="classCVC3_1_1Literal.html">Literal</a>& lit): d_lit(lit) {</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <a class="code" href="classCVC3_1_1SearchImplBase_1_1Splitter.html#a5a12e90f92f58ac61e1525f8a8099def">d_lit</a>.<a class="code" href="classCVC3_1_1Literal.html#a4823b2e9ec3a6a13a28c209d22269564">count</a>()++;</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <a class="code" href="kinds_8h.html#aa10c9e8951b8ccf714a59ec321bdac5ba7fa27e82c6c4f69434225ed81e5d151e">TRACE</a>(<span class="stringliteral">"Splitter"</span>, <span class="stringliteral">"Splitter("</span>, <a class="code" href="classCVC3_1_1SearchImplBase_1_1Splitter.html#a5a12e90f92f58ac61e1525f8a8099def">d_lit</a>, <span class="stringliteral">")"</span>);</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> }</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> </div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> <span class="comment">// Copy constructor</span></div>
<div class="line"><a name="l00081"></a><span class="lineno"><a class="code" href="classCVC3_1_1SearchImplBase_1_1Splitter.html#a19fc6bdd8f6563e416be12945c7bdd23"> 81</a></span> <a class="code" href="classCVC3_1_1SearchImplBase_1_1Splitter.html#a59ee8b0fa0185678e86266e6159bf69a" title="Constructor.">SearchImplBase::Splitter::Splitter</a>(<span class="keyword">const</span> <a class="code" href="classCVC3_1_1SearchImplBase_1_1Splitter.html" title="Representation of a DP-suggested splitter.">SearchImplBase::Splitter</a>& s)</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  : d_lit(s.d_lit) {</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <a class="code" href="classCVC3_1_1SearchImplBase_1_1Splitter.html#a5a12e90f92f58ac61e1525f8a8099def">d_lit</a>.<a class="code" href="classCVC3_1_1Literal.html#a4823b2e9ec3a6a13a28c209d22269564">count</a>()++;</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <a class="code" href="kinds_8h.html#aa10c9e8951b8ccf714a59ec321bdac5ba7fa27e82c6c4f69434225ed81e5d151e">TRACE</a>(<span class="stringliteral">"Splitter"</span>, <span class="stringliteral">"Splitter[copy]("</span>, <a class="code" href="classCVC3_1_1SearchImplBase_1_1Splitter.html#a5a12e90f92f58ac61e1525f8a8099def">d_lit</a>, <span class="stringliteral">")"</span>);</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> }</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> </div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> <span class="comment">// Assignment</span></div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <a class="code" href="classCVC3_1_1SearchImplBase_1_1Splitter.html" title="Representation of a DP-suggested splitter.">SearchImplBase::Splitter</a>&</div>
<div class="line"><a name="l00089"></a><span class="lineno"><a class="code" href="classCVC3_1_1SearchImplBase_1_1Splitter.html#a5ba159e6e31410ed42bb5edfe2d7020b"> 89</a></span> <a class="code" href="classCVC3_1_1SearchImplBase_1_1Splitter.html#a5ba159e6e31410ed42bb5edfe2d7020b" title="Assignment.">SearchImplBase::Splitter::operator=</a>(<span class="keyword">const</span> <a class="code" href="classCVC3_1_1SearchImplBase_1_1Splitter.html" title="Representation of a DP-suggested splitter.">SearchImplBase::Splitter</a>& s) {</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keywordflow">if</span>(<span class="keyword">this</span> == &s) <span class="keywordflow">return</span> *<span class="keyword">this</span>; <span class="comment">// Self-assignment</span></div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  d_lit.count()--;</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  d_lit = s.<a class="code" href="classCVC3_1_1SearchImplBase_1_1Splitter.html#a5a12e90f92f58ac61e1525f8a8099def">d_lit</a>;</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  d_lit.<a class="code" href="classCVC3_1_1Literal.html#a4823b2e9ec3a6a13a28c209d22269564">count</a>()++;</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <a class="code" href="kinds_8h.html#aa10c9e8951b8ccf714a59ec321bdac5ba7fa27e82c6c4f69434225ed81e5d151e">TRACE</a>(<span class="stringliteral">"Splitter"</span>, <span class="stringliteral">"Splitter[assign]("</span>, d_lit, <span class="stringliteral">")"</span>);</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> }</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> </div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="comment">// Destructor</span></div>
<div class="line"><a name="l00099"></a><span class="lineno"><a class="code" href="classCVC3_1_1SearchImplBase_1_1Splitter.html#a41e072e9644325ae849a1602c31d9d36"> 99</a></span> <a class="code" href="classCVC3_1_1SearchImplBase_1_1Splitter.html#a41e072e9644325ae849a1602c31d9d36" title="Descructor.">SearchImplBase::Splitter::~Splitter</a>() {</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  d_lit.count()--;</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <a class="code" href="kinds_8h.html#aa10c9e8951b8ccf714a59ec321bdac5ba7fa27e82c6c4f69434225ed81e5d151e">TRACE</a>(<span class="stringliteral">"Splitter"</span>, <span class="stringliteral">"~Splitter("</span>, d_lit, <span class="stringliteral">")"</span>);</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> }</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> </div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> </div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span> <span class="comment"></span></div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span> <span class="comment">//! Constructor</span></div>
<div class="line"><a name="l00107"></a><span class="lineno"><a class="code" href="group__SE.html#gaa6e44780a3c5e714f4fd5d8ee41bb1fb"> 107</a></span> <span class="comment"></span><a class="code" href="group__SE.html#gaa6e44780a3c5e714f4fd5d8ee41bb1fb" title="Constructor.">SearchImplBase::SearchImplBase</a>(<a class="code" href="classCVC3_1_1TheoryCore.html" title="This theory handles the built-in logical connectives plus equality. It also handles the registration ...">TheoryCore</a>* core)</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  : <a class="code" href="classCVC3_1_1SearchEngine.html" title="API to to a generic proof search engine.">SearchEngine</a>(core),</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <a class="code" href="group__SE.html#ga640e08e2b051e08f2abdd4111b9a2e71" title="The bottom-most scope for the current call to checkSAT (where conflict clauses are still valid)...">d_bottomScope</a>(core->getCM()->getCurrentContext()),</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <a class="code" href="group__SE.html#ga8ea9b2ab9f50d3ddf595595b1f3d7974" title="Backtracking ordered set of DP-suggested splitters.">d_dpSplitters</a>(core->getCM()->getCurrentContext()),</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <a class="code" href="group__SE.html#ga88ba664573602ecfca1d6eadc14a30af" title="Theorem from the last successful checkValid call. It is used by getProof and getAssumptions.">d_lastValid</a>(<a class="code" href="group__SE.html#ga63f2a3cfcfa86820bea2f45cb890cc1c" title="Common proof rules.">d_commonRules</a>->trueTheorem()),</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <a class="code" href="group__SE.html#ga83dfe2d2d85bacf5e4aa10c0320a140b" title="Maintain the list of current assumptions (user asserts and splitters) for getAssumptions().">d_assumptions</a>(core->getCM()->getCurrentContext()),</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <a class="code" href="group__SE.html#gab60a7d204ed01875c98629e874575cd6" title="Backtracking cache for the CNF generator.">d_cnfCache</a>(core->getCM()->getCurrentContext()),</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <a class="code" href="group__SE.html#ga1c64a37d94b4cadedce29f3e4b98a3af" title="Backtracking set of new variables generated by CNF translator.">d_cnfVars</a>(core->getCM()->getCurrentContext()),</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <a class="code" href="group__SE.html#gae3b8b3cfd965e7d5138320d26808767a" title="Command line flag whether to convert to CNF.">d_cnfOption</a>(&(core->getFlags()[<span class="stringliteral">"cnf"</span>].getBool())),</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <a class="code" href="group__SE.html#gaa28d7e60bbe1df69ffb304f939b984b7" title="Flag: whether to convert term ITEs into CNF.">d_ifLiftOption</a>(&(core->getFlags()[<span class="stringliteral">"iflift"</span>].getBool())),</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <a class="code" href="group__SE.html#gafc2c782e4f24b55c8af7cb0189d281d8" title="Flag: ignore auxiliary CNF variables when searching for a splitter.">d_ignoreCnfVarsOption</a>(&(core->getFlags()[<span class="stringliteral">"ignore-cnf-vars"</span>].getBool())),</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <a class="code" href="group__SE.html#ga2287fd23d4250cc74db446983b2c3274" title="Flag: Preserve the original formula with +cnf (for splitter heuristics)">d_origFormulaOption</a>(&(core->getFlags()[<span class="stringliteral">"orig-formula"</span>].getBool())),</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <a class="code" href="group__SE.html#ga9dc16eb11f046d9a615aff3018957c6d" title="Cache for enqueueCNF()">d_enqueueCNFCache</a>(core->getCM()->getCurrentContext()),</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <a class="code" href="group__SE.html#ga401319b3ede7162504e979aaf2119deb" title="Cache for applyCNFRules()">d_applyCNFRulesCache</a>(core->getCM()->getCurrentContext()),</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <a class="code" href="group__SE.html#ga0c829909b9e3ab2b59ba40e681905c4b" title="Cache for replaceITE()">d_replaceITECache</a>(core->getCM()->getCurrentContext())</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> {</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  <a class="code" href="group__SE.html#ga626a0fe24f363d007d729e16d13349e5" title="Variable manager for classes Variable and Literal.">d_vm</a> = <span class="keyword">new</span> <a class="code" href="classCVC3_1_1VariableManager.html">VariableManager</a>(core-><a class="code" href="classCVC3_1_1TheoryCore.html#a9377f423f4fd59fdac396794363733a6">getCM</a>(), <a class="code" href="group__SE.html#ga879b68112123e2b4ae7175d85a03bfec" title="Proof rules for the search engine.">d_rules</a>,</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  core-><a class="code" href="classCVC3_1_1TheoryCore.html#a46b2792a5c24f95ccfc3fbfc0456b09f">getFlags</a>()[<span class="stringliteral">"mm"</span>].getString());</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <a class="code" href="debug_8h.html#a600cb2d68efe7cc413cccbb5714c7016">IF_DEBUG</a>(<a class="code" href="group__SE.html#ga83dfe2d2d85bacf5e4aa10c0320a140b" title="Maintain the list of current assumptions (user asserts and splitters) for getAssumptions().">d_assumptions</a>.setName(<span class="stringliteral">"CDList[SearchImplBase::d_assumptions]"</span>);)</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <a class="code" href="group__SE.html#ga02f72989536076eab8c55e452a6662d9">d_coreSatAPI_implBase</a> = <span class="keyword">new</span> <a class="code" href="classCVC3_1_1CoreSatAPI__implBase.html">CoreSatAPI_implBase</a>(<span class="keyword">this</span>);</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  core-><a class="code" href="classCVC3_1_1TheoryCore.html#afb6629080bceb44023f1bb3a44f9136f" title="Register a SatAPI for TheoryCore.">registerCoreSatAPI</a>(<a class="code" href="group__SE.html#ga02f72989536076eab8c55e452a6662d9">d_coreSatAPI_implBase</a>);</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span> }</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span> </div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="comment"></span></div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> <span class="comment">//! Destructor</span></div>
<div class="line"><a name="l00132"></a><span class="lineno"><a class="code" href="group__SE.html#ga139d4116c2b14d5357f2696dc8f29cac"> 132</a></span> <span class="comment"></span><a class="code" href="group__SE.html#ga139d4116c2b14d5357f2696dc8f29cac" title="Destructor.">SearchImplBase::~SearchImplBase</a>()</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> {</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  <span class="keyword">delete</span> <a class="code" href="group__SE.html#ga02f72989536076eab8c55e452a6662d9">d_coreSatAPI_implBase</a>;</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="keyword">delete</span> <a class="code" href="group__SE.html#ga626a0fe24f363d007d729e16d13349e5" title="Variable manager for classes Variable and Literal.">d_vm</a>;</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span> }</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span> </div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span> </div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> <span class="comment">// Returns a new theorem if e has not already been asserted, otherwise returns</span></div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span> <span class="comment">// a NULL theorem.</span></div>
<div class="line"><a name="l00141"></a><span class="lineno"><a class="code" href="group__SE.html#gaf46a82b16f76c9e97cfe252d4398eac7"> 141</a></span> <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a> <a class="code" href="group__SE.html#gaf46a82b16f76c9e97cfe252d4398eac7" title="Generate and add a new assertion to the set of assertions in the current context. This should only be...">SearchImplBase::newUserAssumption</a>(<span class="keyword">const</span> <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a>& e) {</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a> thm;</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <a class="code" href="classCVC3_1_1CDMap.html">CDMap<Expr,Theorem>::iterator</a> i(<a class="code" href="group__SE.html#ga83dfe2d2d85bacf5e4aa10c0320a140b" title="Maintain the list of current assumptions (user asserts and splitters) for getAssumptions().">d_assumptions</a>.<a class="code" href="classCVC3_1_1CDMap.html#a1cadecbd2d6fa614a2f2e9419aa43f33">find</a>(e));</div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <a class="code" href="debug_8h.html#a600cb2d68efe7cc413cccbb5714c7016">IF_DEBUG</a>(<span class="keywordflow">if</span>(debugger.trace(<span class="stringliteral">"search verbose"</span>)) {</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  ostream& os(debugger.getOS());</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  os << <span class="stringliteral">"d_assumptions = ["</span>;</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <span class="keywordflow">for</span>(<a class="code" href="classCVC3_1_1CDMap.html">CDMap<Expr,Theorem>::iterator</a> i=<a class="code" href="group__SE.html#ga83dfe2d2d85bacf5e4aa10c0320a140b" title="Maintain the list of current assumptions (user asserts and splitters) for getAssumptions().">d_assumptions</a>.<a class="code" href="classCVC3_1_1CDMap.html#a5d57eb1210dab2fadcd85a2f01e6d6d1">begin</a>(),</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  iend=<a class="code" href="group__SE.html#ga83dfe2d2d85bacf5e4aa10c0320a140b" title="Maintain the list of current assumptions (user asserts and splitters) for getAssumptions().">d_assumptions</a>.<a class="code" href="classCVC3_1_1CDMap.html#a2a26c7cc4db12cb17d273db5cfa5a890">end</a>(); i!=iend; ++i) {</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  debugger.getOS() << <span class="stringliteral">"("</span> << (*i).first << <span class="stringliteral">" => "</span> << (*i).second << <span class="stringliteral">"), "</span>;</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  }</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  os << <span class="stringliteral">"]"</span> << <a class="code" href="group__ExprStream__Manip.html#ga05b0ea7353ec24fa8e7e272d7a7875d8" title="Print the end-of-line.">endl</a>;</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  })</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  <span class="keywordflow">if</span>(i!=<a class="code" href="group__SE.html#ga83dfe2d2d85bacf5e4aa10c0320a140b" title="Maintain the list of current assumptions (user asserts and splitters) for getAssumptions().">d_assumptions</a>.<a class="code" href="classCVC3_1_1CDMap.html#a2a26c7cc4db12cb17d273db5cfa5a890">end</a>()) {</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <a class="code" href="kinds_8h.html#aa10c9e8951b8ccf714a59ec321bdac5ba7fa27e82c6c4f69434225ed81e5d151e">TRACE</a>(<span class="stringliteral">"search verbose"</span>, <span class="stringliteral">"newUserAssumption("</span>, e,</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <span class="stringliteral">"): assumption already exists"</span>);</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  thm = <a class="code" href="group__SE.html#ga63f2a3cfcfa86820bea2f45cb890cc1c" title="Common proof rules.">d_commonRules</a>-><a class="code" href="classCVC3_1_1CommonProofRules.html#ab4527c48e9f88d94d7ca076757a6f3ba">assumpRule</a>(e);</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <a class="code" href="group__SE.html#ga83dfe2d2d85bacf5e4aa10c0320a140b" title="Maintain the list of current assumptions (user asserts and splitters) for getAssumptions().">d_assumptions</a>[e] = thm;</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  e.<a class="code" href="group__ExprPkg.html#ga63eb3b8c124654cf056b2814794c4236">setUserAssumption</a>();</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <a class="code" href="kinds_8h.html#aa10c9e8951b8ccf714a59ec321bdac5ba7fa27e82c6c4f69434225ed81e5d151e">TRACE</a>(<span class="stringliteral">"search verbose"</span>, <span class="stringliteral">"newUserAssumption("</span>, thm,</div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="stringliteral">"): created new assumption"</span>);</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  }</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="keywordflow">if</span> (!thm.<a class="code" href="classCVC3_1_1Theorem.html#afc6fdb0507eb3669e28d9be5ed0bd333">isNull</a>()) <a class="code" href="group__SE.html#ga3772c6af7eac91b9ed7fc278edf5ef90" title="Access to theory reasoning.">d_core</a>-><a class="code" href="classCVC3_1_1TheoryCore.html#aecef2465eb761f7f112ddce77f93d081" title="Add a new assertion to the core from the user or a SAT solver. Do NOT use it in a decision procedure;...">addFact</a>(<a class="code" href="group__SE.html#ga3772c6af7eac91b9ed7fc278edf5ef90" title="Access to theory reasoning.">d_core</a>-><a class="code" href="classCVC3_1_1TheoryCore.html#acc963fd43994f06d3647394b731e835c">getExprTrans</a>()-><a class="code" href="classCVC3_1_1ExprTransform.html#a39652560061ab1172040113d9dfa25f6">preprocess</a>(thm));</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="keywordflow">return</span> thm;</div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span> }</div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span> </div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span> </div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span> <span class="comment">// Same as newUserAssertion, except it's an error to assert something that's</span></div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span> <span class="comment">// already been asserted.</span></div>
<div class="line"><a name="l00170"></a><span class="lineno"><a class="code" href="group__SE.html#ga635768498a239f0193de5f1445676f65"> 170</a></span> <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a> <a class="code" href="group__SE.html#ga635768498a239f0193de5f1445676f65" title="Add a new internal asserion.">SearchImplBase::newIntAssumption</a>(<span class="keyword">const</span> <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a>& e) {</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a> thm = <a class="code" href="group__SE.html#ga63f2a3cfcfa86820bea2f45cb890cc1c" title="Common proof rules.">d_commonRules</a>-><a class="code" href="classCVC3_1_1CommonProofRules.html#ab4527c48e9f88d94d7ca076757a6f3ba">assumpRule</a>(e);</div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a> atom = e.<a class="code" href="group__ExprPkg.html#ga1a898858ccadce833df5a294c7740f11">isNot</a>() ? e[0] : e;</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  thm.<a class="code" href="classCVC3_1_1Theorem.html#ab3309c937f827595d1d92fa48cb5a471" title="Set the quantification level for this theorem.">setQuantLevel</a>(<a class="code" href="group__SE.html#ga895a3150e972fb79a7a3ab26100dd31e" title="Accessor for TheoryCore.">theoryCore</a>()->getQuantLevelForTerm(atom));</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <a class="code" href="group__SE.html#ga635768498a239f0193de5f1445676f65" title="Add a new internal asserion.">newIntAssumption</a>(thm);</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="keywordflow">return</span> thm;</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span> }</div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span> </div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span> </div>
<div class="line"><a name="l00179"></a><span class="lineno"><a class="code" href="group__SE.html#gab6852f32844435f73f86665c40d2fda8"> 179</a></span> <span class="keywordtype">void</span> <a class="code" href="group__SE.html#ga635768498a239f0193de5f1445676f65" title="Add a new internal asserion.">SearchImplBase::newIntAssumption</a>(<span class="keyword">const</span> <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a>& thm) {</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(!<a class="code" href="group__SE.html#ga83dfe2d2d85bacf5e4aa10c0320a140b" title="Maintain the list of current assumptions (user asserts and splitters) for getAssumptions().">d_assumptions</a>.<a class="code" href="classCVC3_1_1CDMap.html#af5f700035db0db798c645e36dd0b31bd">count</a>(thm.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>()),</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="stringliteral">"newIntAssumption: repeated assertion: "</span>+thm.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>().<a class="code" href="group__ExprPkg.html#gaf3028bb1619f8cc69b66ec712e1adb54" title="Print the expression to a string.">toString</a>());</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  <a class="code" href="group__SE.html#ga83dfe2d2d85bacf5e4aa10c0320a140b" title="Maintain the list of current assumptions (user asserts and splitters) for getAssumptions().">d_assumptions</a>[thm.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>()] = thm;</div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  thm.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>().<a class="code" href="group__ExprPkg.html#ga8b1ac81529d2ebee895a385a35460d39">setIntAssumption</a>();</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  <a class="code" href="kinds_8h.html#aa10c9e8951b8ccf714a59ec321bdac5ba7fa27e82c6c4f69434225ed81e5d151e">TRACE</a>(<span class="stringliteral">"search verbose"</span>, <span class="stringliteral">"newIntAssumption("</span>, thm,</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  <span class="stringliteral">"): new assumption"</span>);</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span> }</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span> </div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span> </div>
<div class="line"><a name="l00189"></a><span class="lineno"><a class="code" href="group__SE.html#gab730f3f048637996f532f77af932fe55"> 189</a></span> <span class="keywordtype">void</span> <a class="code" href="group__SE.html#gab730f3f048637996f532f77af932fe55" title="Get all assumptions made in this and all previous contexts.">SearchImplBase::getUserAssumptions</a>(vector<Expr>& assumptions)</div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span> {</div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  <span class="keywordflow">for</span>(<a class="code" href="classCVC3_1_1CDMap.html">CDMap<Expr,Theorem>::orderedIterator</a> i=<a class="code" href="group__SE.html#ga83dfe2d2d85bacf5e4aa10c0320a140b" title="Maintain the list of current assumptions (user asserts and splitters) for getAssumptions().">d_assumptions</a>.<a class="code" href="classCVC3_1_1CDMap.html#a691443b59a497f6223eae64a2801f5d4">orderedBegin</a>(),</div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  iend=<a class="code" href="group__SE.html#ga83dfe2d2d85bacf5e4aa10c0320a140b" title="Maintain the list of current assumptions (user asserts and splitters) for getAssumptions().">d_assumptions</a>.<a class="code" href="classCVC3_1_1CDMap.html#aac337d308e248fd61acf392c7151c9e3">orderedEnd</a>(); i!=iend; ++i)</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <span class="keywordflow">if</span> ((*i).first.isUserAssumption()) assumptions.push_back((*i).first);</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span> }</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span> </div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span> </div>
<div class="line"><a name="l00197"></a><span class="lineno"><a class="code" href="group__SE.html#gae65e0921e9ef2b475242b1a284a413ad"> 197</a></span> <span class="keywordtype">void</span> <a class="code" href="group__SE.html#gae65e0921e9ef2b475242b1a284a413ad" title="Get assumptions made internally in this and all previous contexts.">SearchImplBase::getInternalAssumptions</a>(std::vector<Expr>& assumptions)</div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span> {</div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  <span class="keywordflow">for</span>(<a class="code" href="classCVC3_1_1CDMap.html">CDMap<Expr,Theorem>::orderedIterator</a> i=<a class="code" href="group__SE.html#ga83dfe2d2d85bacf5e4aa10c0320a140b" title="Maintain the list of current assumptions (user asserts and splitters) for getAssumptions().">d_assumptions</a>.<a class="code" href="classCVC3_1_1CDMap.html#a691443b59a497f6223eae64a2801f5d4">orderedBegin</a>(),</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  iend=<a class="code" href="group__SE.html#ga83dfe2d2d85bacf5e4aa10c0320a140b" title="Maintain the list of current assumptions (user asserts and splitters) for getAssumptions().">d_assumptions</a>.<a class="code" href="classCVC3_1_1CDMap.html#aac337d308e248fd61acf392c7151c9e3">orderedEnd</a>(); i!=iend; ++i)</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  <span class="keywordflow">if</span> ((*i).first.isIntAssumption()) assumptions.push_back((*i).first);</div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span> }</div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span> </div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span> </div>
<div class="line"><a name="l00205"></a><span class="lineno"><a class="code" href="group__SE.html#gadadf46fa5200744c9f30ca548080d35d"> 205</a></span> <span class="keywordtype">void</span> <a class="code" href="group__SE.html#gadadf46fa5200744c9f30ca548080d35d" title="Get all assumptions made in this and all previous contexts.">SearchImplBase::getAssumptions</a>(std::vector<Expr>& assumptions)</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span> {</div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  <span class="keywordflow">for</span>(<a class="code" href="classCVC3_1_1CDMap.html">CDMap<Expr,Theorem>::orderedIterator</a> i=<a class="code" href="group__SE.html#ga83dfe2d2d85bacf5e4aa10c0320a140b" title="Maintain the list of current assumptions (user asserts and splitters) for getAssumptions().">d_assumptions</a>.<a class="code" href="classCVC3_1_1CDMap.html#a691443b59a497f6223eae64a2801f5d4">orderedBegin</a>(),</div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  iend=<a class="code" href="group__SE.html#ga83dfe2d2d85bacf5e4aa10c0320a140b" title="Maintain the list of current assumptions (user asserts and splitters) for getAssumptions().">d_assumptions</a>.<a class="code" href="classCVC3_1_1CDMap.html#aac337d308e248fd61acf392c7151c9e3">orderedEnd</a>(); i!=iend; ++i)</div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  assumptions.push_back((*i).first);</div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span> }</div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span> </div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span> </div>
<div class="line"><a name="l00213"></a><span class="lineno"><a class="code" href="group__SE.html#ga38ec2c19ebab8525ebc3c6249bf97442"> 213</a></span> <span class="keywordtype">bool</span> <a class="code" href="group__SE.html#ga38ec2c19ebab8525ebc3c6249bf97442" title="Check if the formula has been assumed.">SearchImplBase::isAssumption</a>(<span class="keyword">const</span> <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a>& e) {</div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  <span class="keywordflow">return</span> <a class="code" href="group__SE.html#ga83dfe2d2d85bacf5e4aa10c0320a140b" title="Maintain the list of current assumptions (user asserts and splitters) for getAssumptions().">d_assumptions</a>.<a class="code" href="classCVC3_1_1CDMap.html#af5f700035db0db798c645e36dd0b31bd">count</a>(e) > 0;</div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span> }</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span> </div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span> </div>
<div class="line"><a name="l00218"></a><span class="lineno"><a class="code" href="group__SE.html#gadebc5b605b4a358789b697e44065a97e"> 218</a></span> <span class="keywordtype">void</span> <a class="code" href="group__SE.html#gadebc5b605b4a358789b697e44065a97e" title="Add a new fact to the search engine bypassing CNF converter.">SearchImplBase::addCNFFact</a>(<span class="keyword">const</span> <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a>& thm, <span class="keywordtype">bool</span> fromCore) {</div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  <a class="code" href="kinds_8h.html#aa10c9e8951b8ccf714a59ec321bdac5ba7fa27e82c6c4f69434225ed81e5d151e">TRACE</a>(<span class="stringliteral">"addCNFFact"</span>, <span class="stringliteral">"addCNFFact("</span>, thm.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>(), <span class="stringliteral">") {"</span>);</div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  <span class="keywordflow">if</span>(thm.<a class="code" href="classCVC3_1_1Theorem.html#aed1590a02166f6099e5538dbf681a60c" title="Check if the theorem is a literal.">isAbsLiteral</a>()) {</div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  <a class="code" href="group__SE.html#gaed2d918b4d0eb14d99bf63882fe2df1a" title="Notify the search engine about a new literal fact.">addLiteralFact</a>(thm);</div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  <span class="comment">// These literals are derived, and should also be reported to the core. </span></div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  <span class="keywordflow">if</span>(!fromCore) <a class="code" href="group__SE.html#ga3772c6af7eac91b9ed7fc278edf5ef90" title="Access to theory reasoning.">d_core</a>-><a class="code" href="classCVC3_1_1TheoryCore.html#a0ceab59114fc3864bac9a347c61ec444" title="Enqueue a new fact.">enqueueFact</a>(thm);</div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  <a class="code" href="group__SE.html#gae95c78de94900637db19e3b7dee5d7c3" title="Notify the search engine about a new non-literal fact.">addNonLiteralFact</a>(thm);</div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  }</div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  <a class="code" href="debug_8h.html#ad64155edafde9f067f4868817cd04bdf">TRACE_MSG</a>(<span class="stringliteral">"addCNFFact"</span>, <span class="stringliteral">"addCNFFact => }"</span>);</div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span> }</div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span> </div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span> </div>
<div class="line"><a name="l00231"></a><span class="lineno"><a class="code" href="group__SE.html#gac6e807418fb26dee354f7f934eb432ba"> 231</a></span> <span class="keywordtype">void</span> <a class="code" href="group__SE.html#gac6e807418fb26dee354f7f934eb432ba" title="Add a new fact to the search engine from the core.">SearchImplBase::addFact</a>(<span class="keyword">const</span> <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a>& thm) {</div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  <a class="code" href="kinds_8h.html#aa10c9e8951b8ccf714a59ec321bdac5ba7fa27e82c6c4f69434225ed81e5d151e">TRACE</a>(<span class="stringliteral">"search addFact"</span>, <span class="stringliteral">"SearchImplBase::addFact("</span>, thm.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>(), <span class="stringliteral">") {"</span>);</div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  <span class="keywordflow">if</span>(*<a class="code" href="group__SE.html#gae3b8b3cfd965e7d5138320d26808767a" title="Command line flag whether to convert to CNF.">d_cnfOption</a>)</div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  <a class="code" href="group__SE.html#ga4bcd481c70362c589aa7e712a8cc746d" title="Translate theta to CNF and enqueue the new clauses.">enqueueCNF</a>(thm);</div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  <a class="code" href="group__SE.html#gadebc5b605b4a358789b697e44065a97e" title="Add a new fact to the search engine bypassing CNF converter.">addCNFFact</a>(thm, <span class="keyword">true</span>);</div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  <a class="code" href="debug_8h.html#ad64155edafde9f067f4868817cd04bdf">TRACE_MSG</a>(<span class="stringliteral">"search addFact"</span>, <span class="stringliteral">"SearchImplBase::addFact => }"</span>);</div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span> }</div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span> </div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span> </div>
<div class="line"><a name="l00241"></a><span class="lineno"><a class="code" href="group__SE.html#ga6c1448b58fb299bc084aa9c522faf36d"> 241</a></span> <span class="keywordtype">void</span> <a class="code" href="group__SE.html#ga6c1448b58fb299bc084aa9c522faf36d" title="Suggest a splitter to the SearchEngine.">SearchImplBase::addSplitter</a>(<span class="keyword">const</span> <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a>& e, <span class="keywordtype">int</span> priority) {</div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(e.<a class="code" href="group__ExprPkg.html#gaac535dae48f02fcd093a5b1b1a062211" title="Test if e is an abstract literal.">isAbsLiteral</a>(), <span class="stringliteral">"SearchImplBase::addSplitter("</span>+e.<a class="code" href="group__ExprPkg.html#gaf3028bb1619f8cc69b66ec712e1adb54" title="Print the expression to a string.">toString</a>()+<span class="stringliteral">")"</span>);</div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  <a class="code" href="group__SE.html#ga8ea9b2ab9f50d3ddf595595b1f3d7974" title="Backtracking ordered set of DP-suggested splitters.">d_dpSplitters</a>.<a class="code" href="classCVC3_1_1CDList.html#aa1e8d3591c596d1b9c585dec955b519b">push_back</a>(<a class="code" href="classCVC3_1_1SearchImplBase_1_1Splitter.html" title="Representation of a DP-suggested splitter.">Splitter</a>(<a class="code" href="group__SE.html#gaf0dbbb1806723760ab8744e96a8c6657" title="Construct a Literal out of an Expr or return an existing one.">newLiteral</a>(e)));</div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span> }</div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span> </div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span> </div>
<div class="line"><a name="l00247"></a><span class="lineno"><a class="code" href="group__SE.html#gacf93ae1a488573c6d34dee7721007351"> 247</a></span> <span class="keywordtype">void</span> <a class="code" href="group__SE.html#gacf93ae1a488573c6d34dee7721007351" title="Will return the set of assertions which make the queried formula false.">SearchImplBase::getCounterExample</a>(vector<Expr>& assertions, <span class="keywordtype">bool</span> inOrder)</div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span> {</div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  <span class="keywordflow">if</span>(!<a class="code" href="group__SE.html#ga3772c6af7eac91b9ed7fc278edf5ef90" title="Access to theory reasoning.">d_core</a>-><a class="code" href="classCVC3_1_1TheoryCore.html#af3077cff0601b8ae28e420ef5ce2ea37">getTM</a>()-><a class="code" href="classCVC3_1_1TheoremManager.html#a0a4f7d2aac078ca32b1dacb5d0af25c4">withAssumptions</a>())</div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  <span class="keywordflow">throw</span> <a class="code" href="classCVC3_1_1EvalException.html">EvalException</a></div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  (<span class="stringliteral">"Method getCounterExample() (or command COUNTEREXAMPLE) cannot be used\n"</span></div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  <span class="stringliteral">" without assumptions activated"</span>);</div>
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  <span class="keywordflow">if</span>(!<a class="code" href="group__SE.html#ga88ba664573602ecfca1d6eadc14a30af" title="Theorem from the last successful checkValid call. It is used by getProof and getAssumptions.">d_lastValid</a>.<a class="code" href="classCVC3_1_1Theorem.html#afc6fdb0507eb3669e28d9be5ed0bd333">isNull</a>())</div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  <span class="keywordflow">throw</span> <a class="code" href="classCVC3_1_1EvalException.html">EvalException</a></div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  (<span class="stringliteral">"Method getCounterExample() (or command COUNTEREXAMPLE)\n"</span></div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  <span class="stringliteral">" must be called only after failed QUERY"</span>);</div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  <a class="code" href="group__SE.html#gae65e0921e9ef2b475242b1a284a413ad" title="Get assumptions made internally in this and all previous contexts.">getInternalAssumptions</a>(assertions);</div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span> <span class="comment"></span></div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span> <span class="comment"> if(!d_lastCounterExample.empty()) {</span></div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span> <span class="comment"> if (inOrder) {</span></div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span> <span class="comment"> for(CDMap<Expr,Theorem>::orderedIterator i=d_assumptions.orderedBegin(),</span></div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span> <span class="comment"> iend=d_assumptions.orderedEnd(); i!=iend; ++i) {</span></div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span> <span class="comment"> if (d_lastCounterExample.find((*i).first) != d_lastCounterExample.end()) {</span></div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span> <span class="comment"> assertions.push_back((*i).first);</span></div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span> <span class="comment"> }</span></div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span> <span class="comment"> }</span></div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span> <span class="comment"> DebugAssert(assertions.size()==d_lastCounterExample.size(),</span></div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span> <span class="comment"> "getCounterExample: missing assertion");</span></div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span> <span class="comment"> }</span></div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span> <span class="comment"> else {</span></div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span> <span class="comment"> ExprHashMap<bool>::iterator i=d_lastCounterExample.begin(),</span></div>
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span> <span class="comment"> iend = d_lastCounterExample.end();</span></div>
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span> <span class="comment"> for(; i!=iend; ++i) assertions.push_back((*i).first);</span></div>
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span> <span class="comment"> }</span></div>
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span> <span class="comment"> }</span></div>
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span> }</div>
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span> </div>
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span> </div>
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span> <a class="code" href="classCVC3_1_1Proof.html">Proof</a> </div>
<div class="line"><a name="l00282"></a><span class="lineno"><a class="code" href="group__SE.html#gaf90e8ae5cd67dc6c43787a9d3ebdca53"> 282</a></span> <a class="code" href="group__SE.html#gaf90e8ae5cd67dc6c43787a9d3ebdca53" title="Returns the proof term for the last proven query.">SearchImplBase::getProof</a>()</div>
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span> {</div>
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  <span class="keywordflow">if</span>(!<a class="code" href="group__SE.html#ga3772c6af7eac91b9ed7fc278edf5ef90" title="Access to theory reasoning.">d_core</a>-><a class="code" href="classCVC3_1_1TheoryCore.html#af3077cff0601b8ae28e420ef5ce2ea37">getTM</a>()-><a class="code" href="classCVC3_1_1TheoremManager.html#a462f27eb0eca420b334354a9ddc7a257">withProof</a>())</div>
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  <span class="keywordflow">throw</span> <a class="code" href="classCVC3_1_1EvalException.html">EvalException</a></div>
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  (<span class="stringliteral">"DUMP_PROOF cannot be used without proofs activated"</span>);</div>
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  <span class="keywordflow">if</span>(<a class="code" href="group__SE.html#ga88ba664573602ecfca1d6eadc14a30af" title="Theorem from the last successful checkValid call. It is used by getProof and getAssumptions.">d_lastValid</a>.<a class="code" href="classCVC3_1_1Theorem.html#afc6fdb0507eb3669e28d9be5ed0bd333">isNull</a>())</div>
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  <span class="keywordflow">throw</span> <a class="code" href="classCVC3_1_1EvalException.html">EvalException</a></div>
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  (<span class="stringliteral">"DUMP_PROOF must be called only after successful QUERY"</span>);</div>
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  <span class="comment">// Double-check for optimized version</span></div>
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  <span class="keywordflow">if</span>(<a class="code" href="group__SE.html#ga88ba664573602ecfca1d6eadc14a30af" title="Theorem from the last successful checkValid call. It is used by getProof and getAssumptions.">d_lastValid</a>.<a class="code" href="classCVC3_1_1Theorem.html#afc6fdb0507eb3669e28d9be5ed0bd333">isNull</a>()) <span class="keywordflow">return</span> <a class="code" href="classCVC3_1_1Proof.html">Proof</a>();</div>
<div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  <span class="keywordflow">return</span> <a class="code" href="group__SE.html#ga88ba664573602ecfca1d6eadc14a30af" title="Theorem from the last successful checkValid call. It is used by getProof and getAssumptions.">d_lastValid</a>.<a class="code" href="classCVC3_1_1Theorem.html#a2d8352c07a756c3837683a27a1e659ef">getProof</a>();</div>
<div class="line"><a name="l00293"></a><span class="lineno"> 293</span> }</div>
<div class="line"><a name="l00294"></a><span class="lineno"> 294</span> </div>
<div class="line"><a name="l00295"></a><span class="lineno"> 295</span> </div>
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span> <span class="keyword">const</span> <a class="code" href="classCVC3_1_1Assumptions.html">Assumptions</a>&</div>
<div class="line"><a name="l00297"></a><span class="lineno"><a class="code" href="group__SE.html#ga24dc510f27c40d8044f461308bcdb62d"> 297</a></span> <a class="code" href="group__SE.html#ga24dc510f27c40d8044f461308bcdb62d" title="Returns the set of assumptions used in the proof. It should be a subset of getAssumptions().">SearchImplBase::getAssumptionsUsed</a>()</div>
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span> {</div>
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  <span class="keywordflow">if</span>(!<a class="code" href="group__SE.html#ga3772c6af7eac91b9ed7fc278edf5ef90" title="Access to theory reasoning.">d_core</a>-><a class="code" href="classCVC3_1_1TheoryCore.html#af3077cff0601b8ae28e420ef5ce2ea37">getTM</a>()-><a class="code" href="classCVC3_1_1TheoremManager.html#a0a4f7d2aac078ca32b1dacb5d0af25c4">withAssumptions</a>())</div>
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  <span class="keywordflow">throw</span> <a class="code" href="classCVC3_1_1EvalException.html">EvalException</a></div>
<div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  (<span class="stringliteral">"DUMP_ASSUMPTIONS cannot be used without assumptions activated"</span>);</div>
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  <span class="keywordflow">if</span>(<a class="code" href="group__SE.html#ga88ba664573602ecfca1d6eadc14a30af" title="Theorem from the last successful checkValid call. It is used by getProof and getAssumptions.">d_lastValid</a>.<a class="code" href="classCVC3_1_1Theorem.html#afc6fdb0507eb3669e28d9be5ed0bd333">isNull</a>())</div>
<div class="line"><a name="l00303"></a><span class="lineno"> 303</span>  <span class="keywordflow">throw</span> <a class="code" href="classCVC3_1_1EvalException.html">EvalException</a></div>
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  (<span class="stringliteral">"DUMP_ASSUMPTIONS must be called only after successful QUERY"</span>);</div>
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  <span class="comment">// Double-check for optimized version</span></div>
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  <span class="keywordflow">if</span>(<a class="code" href="group__SE.html#ga88ba664573602ecfca1d6eadc14a30af" title="Theorem from the last successful checkValid call. It is used by getProof and getAssumptions.">d_lastValid</a>.<a class="code" href="classCVC3_1_1Theorem.html#afc6fdb0507eb3669e28d9be5ed0bd333">isNull</a>()) <span class="keywordflow">return</span> <a class="code" href="classCVC3_1_1Assumptions.html#af309a39e2e013cc62b6d94c5812ad86b">Assumptions::emptyAssump</a>();</div>
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  <span class="keywordflow">return</span> <a class="code" href="group__SE.html#ga88ba664573602ecfca1d6eadc14a30af" title="Theorem from the last successful checkValid call. It is used by getProof and getAssumptions.">d_lastValid</a>.<a class="code" href="classCVC3_1_1Theorem.html#a5e9ab00a613df15cc02f55edb55a67b3">getAssumptionsRef</a>();</div>
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span> }</div>
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span> <span class="comment"></span></div>
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span> <span class="comment">/*! </span></div>
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span> <span class="comment"> * Given a proof of FALSE ('res') from an assumption 'e', derive the</span></div>
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span> <span class="comment"> * proof of the inverse of e.</span></div>
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span> <span class="comment"> * \param res is a proof of FALSE</span></div>
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span> <span class="comment"> * \param e is the assumption used in the above proof</span></div>
<div class="line"><a name="l00316"></a><span class="lineno"> 316</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00317"></a><span class="lineno"><a class="code" href="group__SE.html#ga0d509e38a03048dcbdb9e28f3f5da724"> 317</a></span> <span class="keywordtype">void</span> <a class="code" href="group__SE.html#ga0d509e38a03048dcbdb9e28f3f5da724" title="Process result of checkValid.">SearchImplBase::processResult</a>(<span class="keyword">const</span> <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a>& res, <span class="keyword">const</span> <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a>& e)</div>
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span> {</div>
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span>  <span class="comment">// Result must be either Null (== SAT) or false (== unSAT)</span></div>
<div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(res.<a class="code" href="classCVC3_1_1Theorem.html#afc6fdb0507eb3669e28d9be5ed0bd333">isNull</a>() || res.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>().<a class="code" href="group__ExprPkg.html#ga6173f64b22cba76472cd0c814bbf6dae">isFalse</a>(),</div>
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  <span class="stringliteral">"processResult: bad input"</span></div>
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  + res.<a class="code" href="classCVC3_1_1Theorem.html#ac4b1c9570ffb9cc901627ef2abb9ff77">toString</a>());</div>
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  <span class="keywordflow">if</span>(res.<a class="code" href="classCVC3_1_1Theorem.html#afc6fdb0507eb3669e28d9be5ed0bd333">isNull</a>()) {</div>
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  <span class="comment">// Didn't prove valid (if CVC-lite is complete, it means invalid).</span></div>
<div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  <span class="comment">// The assumptions for the counterexample must have been already</span></div>
<div class="line"><a name="l00326"></a><span class="lineno"> 326</span>  <span class="comment">// set by checkSAT().</span></div>
<div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  <a class="code" href="group__SE.html#ga88ba664573602ecfca1d6eadc14a30af" title="Theorem from the last successful checkValid call. It is used by getProof and getAssumptions.">d_lastValid</a> = <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a>(); <span class="comment">// Reset last proof</span></div>
<div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  <span class="comment">// Remove !e, keep just the counterexample</span></div>
<div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  <a class="code" href="group__SE.html#gaf6841e86841006b6917d46664de64d21" title="Assumptions from the last unsuccessful checkValid call. These are used by getCounterExample.">d_lastCounterExample</a>.<a class="code" href="classCVC3_1_1ExprHashMap.html#a77637e1f3754b7153cbd1b903a5acb76">erase</a>(!e);</div>
<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  <span class="keywordflow">if</span> (e.<a class="code" href="group__ExprPkg.html#ga1a898858ccadce833df5a294c7740f11">isNot</a>()) <a class="code" href="group__SE.html#gaf6841e86841006b6917d46664de64d21" title="Assumptions from the last unsuccessful checkValid call. These are used by getCounterExample.">d_lastCounterExample</a>.<a class="code" href="classCVC3_1_1ExprHashMap.html#a77637e1f3754b7153cbd1b903a5acb76">erase</a>(e[0]);</div>
<div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00332"></a><span class="lineno"> 332</span>  <span class="comment">// Proved valid</span></div>
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span>  <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a> res2 =</div>
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  <a class="code" href="group__SE.html#ga879b68112123e2b4ae7175d85a03bfec" title="Proof rules for the search engine.">d_rules</a>-><a class="code" href="group__SE__Rules.html#ga3ddf95924d2ff2efb59e84dc78a19821">eliminateSkolemAxioms</a>(res, <a class="code" href="group__SE.html#ga63f2a3cfcfa86820bea2f45cb890cc1c" title="Common proof rules.">d_commonRules</a>-><a class="code" href="classCVC3_1_1CommonProofRules.html#ac773341edabcc5091ca25af74fcb7653">getSkolemAxioms</a>());</div>
<div class="line"><a name="l00335"></a><span class="lineno"> 335</span>  <span class="keywordflow">if</span>(e.<a class="code" href="group__ExprPkg.html#ga1a898858ccadce833df5a294c7740f11">isNot</a>())</div>
<div class="line"><a name="l00336"></a><span class="lineno"> 336</span>  <a class="code" href="group__SE.html#ga88ba664573602ecfca1d6eadc14a30af" title="Theorem from the last successful checkValid call. It is used by getProof and getAssumptions.">d_lastValid</a> = <a class="code" href="group__SE.html#ga879b68112123e2b4ae7175d85a03bfec" title="Proof rules for the search engine.">d_rules</a>-><a class="code" href="group__SE__Rules.html#ga846c2bdc33f6ff2080e76637ea618626" title="Negation introduction: .">negIntro</a>(e, res2);</div>
<div class="line"><a name="l00337"></a><span class="lineno"> 337</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00338"></a><span class="lineno"> 338</span>  <a class="code" href="group__SE.html#ga88ba664573602ecfca1d6eadc14a30af" title="Theorem from the last successful checkValid call. It is used by getProof and getAssumptions.">d_lastValid</a> = <a class="code" href="group__SE.html#ga879b68112123e2b4ae7175d85a03bfec" title="Proof rules for the search engine.">d_rules</a>-><a class="code" href="group__SE__Rules.html#ga64c9fb7058e52c324ce76f15fcea37e2" title="Proof by contradiction: .">proofByContradiction</a>(e, res2);</div>
<div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  <a class="code" href="group__SE.html#gaf6841e86841006b6917d46664de64d21" title="Assumptions from the last unsuccessful checkValid call. These are used by getCounterExample.">d_lastCounterExample</a>.<a class="code" href="classCVC3_1_1ExprHashMap.html#aa20f14dba09537171af45bf479b99c66">clear</a>(); <span class="comment">// Reset counterexample</span></div>
<div class="line"><a name="l00340"></a><span class="lineno"> 340</span>  }</div>
<div class="line"><a name="l00341"></a><span class="lineno"> 341</span> }</div>
<div class="line"><a name="l00342"></a><span class="lineno"> 342</span> </div>
<div class="line"><a name="l00343"></a><span class="lineno"> 343</span> </div>
<div class="line"><a name="l00344"></a><span class="lineno"><a class="code" href="group__SE.html#ga83d82b8cf43e9dc8240e762b180f6343"> 344</a></span> <a class="code" href="namespaceCVC3.html#a060d21b3207cc3471e24f8dbcff3498b">QueryResult</a> <a class="code" href="group__SE.html#ga83d82b8cf43e9dc8240e762b180f6343" title="Similar to checkValidInternal(), only returns Theorem(e) or Null.">SearchImplBase::checkValid</a>(<span class="keyword">const</span> <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a>& e, <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a>& result) {</div>
<div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  <a class="code" href="group__SE.html#ga63f2a3cfcfa86820bea2f45cb890cc1c" title="Common proof rules.">d_commonRules</a>-><a class="code" href="classCVC3_1_1CommonProofRules.html#a6f8068606f30fe7b2c405ddf5ce1a53b">clearSkolemAxioms</a>();</div>
<div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  <a class="code" href="namespaceCVC3.html#a060d21b3207cc3471e24f8dbcff3498b">QueryResult</a> qres = <a class="code" href="group__SE.html#ga1e6282534845cfe93f245d9983d58761" title="Checks the validity of a formula in the current context.">checkValidInternal</a>(e);</div>
<div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  result = <a class="code" href="group__SE.html#ga88ba664573602ecfca1d6eadc14a30af" title="Theorem from the last successful checkValid call. It is used by getProof and getAssumptions.">d_lastValid</a>;</div>
<div class="line"><a name="l00348"></a><span class="lineno"> 348</span>  <span class="keywordflow">return</span> qres;</div>
<div class="line"><a name="l00349"></a><span class="lineno"> 349</span> }</div>
<div class="line"><a name="l00350"></a><span class="lineno"> 350</span> </div>
<div class="line"><a name="l00351"></a><span class="lineno"> 351</span> </div>
<div class="line"><a name="l00352"></a><span class="lineno"><a class="code" href="group__SE.html#gad4a8edbe5a6520fc9f564ec1c65d4729"> 352</a></span> <a class="code" href="namespaceCVC3.html#a060d21b3207cc3471e24f8dbcff3498b">QueryResult</a> <a class="code" href="group__SE.html#gad4a8edbe5a6520fc9f564ec1c65d4729" title="Reruns last check with e as an additional assumption.">SearchImplBase::restart</a>(<span class="keyword">const</span> <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a>& e, <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a>& result) {</div>
<div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  <a class="code" href="namespaceCVC3.html#a060d21b3207cc3471e24f8dbcff3498b">QueryResult</a> qres = <a class="code" href="group__SE.html#gaf89e6b914a2099b366258953fccb6277" title="Reruns last check with e as an additional assumption.">restartInternal</a>(e);</div>
<div class="line"><a name="l00354"></a><span class="lineno"> 354</span>  result = <a class="code" href="group__SE.html#ga88ba664573602ecfca1d6eadc14a30af" title="Theorem from the last successful checkValid call. It is used by getProof and getAssumptions.">d_lastValid</a>;</div>
<div class="line"><a name="l00355"></a><span class="lineno"> 355</span>  <span class="keywordflow">return</span> qres;</div>
<div class="line"><a name="l00356"></a><span class="lineno"> 356</span> }</div>
<div class="line"><a name="l00357"></a><span class="lineno"> 357</span> </div>
<div class="line"><a name="l00358"></a><span class="lineno"> 358</span> </div>
<div class="line"><a name="l00359"></a><span class="lineno"> 359</span> <span class="keywordtype">void</span> </div>
<div class="line"><a name="l00360"></a><span class="lineno"><a class="code" href="group__SE.html#ga4bcd481c70362c589aa7e712a8cc746d"> 360</a></span> <a class="code" href="group__SE.html#ga4bcd481c70362c589aa7e712a8cc746d" title="Translate theta to CNF and enqueue the new clauses.">SearchImplBase::enqueueCNF</a>(<span class="keyword">const</span> <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a>& beta) {</div>
<div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  <a class="code" href="kinds_8h.html#aa10c9e8951b8ccf714a59ec321bdac5ba7fa27e82c6c4f69434225ed81e5d151e">TRACE</a>(<span class="stringliteral">"mycnf"</span>, <span class="stringliteral">"enqueueCNF("</span>, beta, <span class="stringliteral">") {"</span>);</div>
<div class="line"><a name="l00362"></a><span class="lineno"> 362</span>  <span class="keywordflow">if</span>(*<a class="code" href="group__SE.html#ga2287fd23d4250cc74db446983b2c3274" title="Flag: Preserve the original formula with +cnf (for splitter heuristics)">d_origFormulaOption</a>)</div>
<div class="line"><a name="l00363"></a><span class="lineno"> 363</span>  <a class="code" href="group__SE.html#gadebc5b605b4a358789b697e44065a97e" title="Add a new fact to the search engine bypassing CNF converter.">addCNFFact</a>(beta);</div>
<div class="line"><a name="l00364"></a><span class="lineno"> 364</span> </div>
<div class="line"><a name="l00365"></a><span class="lineno"> 365</span>  <a class="code" href="group__SE.html#ga62e31e3c4dbadb6cc5fddc3b0b73e047" title="Recursive version of enqueueCNF()">enqueueCNFrec</a>(beta);</div>
<div class="line"><a name="l00366"></a><span class="lineno"> 366</span>  <a class="code" href="debug_8h.html#ad64155edafde9f067f4868817cd04bdf">TRACE_MSG</a>(<span class="stringliteral">"mycnf"</span>, <span class="stringliteral">"enqueueCNF => }"</span>);</div>
<div class="line"><a name="l00367"></a><span class="lineno"> 367</span> }</div>
<div class="line"><a name="l00368"></a><span class="lineno"> 368</span> </div>
<div class="line"><a name="l00369"></a><span class="lineno"> 369</span> </div>
<div class="line"><a name="l00370"></a><span class="lineno"> 370</span> <span class="keywordtype">void</span> </div>
<div class="line"><a name="l00371"></a><span class="lineno"><a class="code" href="group__SE.html#ga62e31e3c4dbadb6cc5fddc3b0b73e047"> 371</a></span> <a class="code" href="group__SE.html#ga62e31e3c4dbadb6cc5fddc3b0b73e047" title="Recursive version of enqueueCNF()">SearchImplBase::enqueueCNFrec</a>(<span class="keyword">const</span> <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a>& beta) {</div>
<div class="line"><a name="l00372"></a><span class="lineno"> 372</span>  <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a> theta = beta;</div>
<div class="line"><a name="l00373"></a><span class="lineno"> 373</span> </div>
<div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  <a class="code" href="kinds_8h.html#aa10c9e8951b8ccf714a59ec321bdac5ba7fa27e82c6c4f69434225ed81e5d151e">TRACE</a>(<span class="stringliteral">"mycnf"</span>,<span class="stringliteral">"enqueueCNFrec("</span>, theta.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>(), <span class="stringliteral">") { "</span>);</div>
<div class="line"><a name="l00375"></a><span class="lineno"> 375</span>  <a class="code" href="kinds_8h.html#aa10c9e8951b8ccf714a59ec321bdac5ba7fa27e82c6c4f69434225ed81e5d151e">TRACE</a>(<span class="stringliteral">"cnf-clauses"</span>, <span class="stringliteral">"enqueueCNF call"</span>, theta.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>(), <span class="stringliteral">""</span>);</div>
<div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  <span class="comment">// The theorem scope shouldn't be higher than current</span></div>
<div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(theta.<a class="code" href="classCVC3_1_1Theorem.html#a112466d9793abcf97015233ffdc4ec5e">getScope</a>() <= <a class="code" href="group__SE.html#gab267d9f29c30c8e26b5c7bcc4d15306a" title="Return the current scope level (for convenience)">scopeLevel</a>(),</div>
<div class="line"><a name="l00378"></a><span class="lineno"> 378</span>  <span class="stringliteral">"\n theta.getScope()="</span>+<a class="code" href="namespaceCVC3.html#af69618103f1f0f2eadada0796a2a940c">int2string</a>(theta.<a class="code" href="classCVC3_1_1Theorem.html#a112466d9793abcf97015233ffdc4ec5e">getScope</a>())</div>
<div class="line"><a name="l00379"></a><span class="lineno"> 379</span>  +<span class="stringliteral">"\n scopeLevel="</span>+<a class="code" href="namespaceCVC3.html#af69618103f1f0f2eadada0796a2a940c">int2string</a>(<a class="code" href="group__SE.html#gab267d9f29c30c8e26b5c7bcc4d15306a" title="Return the current scope level (for convenience)">scopeLevel</a>())</div>
<div class="line"><a name="l00380"></a><span class="lineno"> 380</span>  +<span class="stringliteral">"\n e = "</span>+theta.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>().<a class="code" href="group__ExprPkg.html#gaf3028bb1619f8cc69b66ec712e1adb54" title="Print the expression to a string.">toString</a>());</div>
<div class="line"><a name="l00381"></a><span class="lineno"> 381</span> </div>
<div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a> thetaExpr = theta.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>();</div>
<div class="line"><a name="l00383"></a><span class="lineno"> 383</span> </div>
<div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  <span class="keywordflow">if</span>(<a class="code" href="group__SE.html#ga9dc16eb11f046d9a615aff3018957c6d" title="Cache for enqueueCNF()">d_enqueueCNFCache</a>.<a class="code" href="classCVC3_1_1CDMap.html#af5f700035db0db798c645e36dd0b31bd">count</a>(thetaExpr) > 0) {</div>
<div class="line"><a name="l00385"></a><span class="lineno"> 385</span>  <a class="code" href="debug_8h.html#ad64155edafde9f067f4868817cd04bdf">TRACE_MSG</a>(<span class="stringliteral">"mycnf"</span>, <span class="stringliteral">"enqueueCNFrec[cached] => }"</span>);</div>
<div class="line"><a name="l00386"></a><span class="lineno"> 386</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00387"></a><span class="lineno"> 387</span>  }</div>
<div class="line"><a name="l00388"></a><span class="lineno"> 388</span> </div>
<div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  <a class="code" href="group__SE.html#ga9dc16eb11f046d9a615aff3018957c6d" title="Cache for enqueueCNF()">d_enqueueCNFCache</a>[thetaExpr] = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00390"></a><span class="lineno"> 390</span> </div>
<div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  <span class="comment">// // Strip double negations first</span></div>
<div class="line"><a name="l00392"></a><span class="lineno"> 392</span>  <span class="keywordflow">while</span>(thetaExpr.isNot() && thetaExpr[0].isNot()) {</div>
<div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  theta = <a class="code" href="group__SE.html#ga63f2a3cfcfa86820bea2f45cb890cc1c" title="Common proof rules.">d_commonRules</a>-><a class="code" href="classCVC3_1_1CommonProofRules.html#ace6786234994faf89bc1b0ac8575278a">notNotElim</a>(theta);</div>
<div class="line"><a name="l00394"></a><span class="lineno"> 394</span>  thetaExpr = theta.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>();</div>
<div class="line"><a name="l00395"></a><span class="lineno"> 395</span>  <span class="comment">// Cache all the derived theorems too</span></div>
<div class="line"><a name="l00396"></a><span class="lineno"> 396</span>  <a class="code" href="group__SE.html#ga9dc16eb11f046d9a615aff3018957c6d" title="Cache for enqueueCNF()">d_enqueueCNFCache</a>[thetaExpr] = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00397"></a><span class="lineno"> 397</span>  }</div>
<div class="line"><a name="l00398"></a><span class="lineno"> 398</span> </div>
<div class="line"><a name="l00399"></a><span class="lineno"> 399</span>  <span class="comment">// Check for a propositional literal</span></div>
<div class="line"><a name="l00400"></a><span class="lineno"> 400</span>  <span class="keywordflow">if</span>(thetaExpr.isPropLiteral()) {</div>
<div class="line"><a name="l00401"></a><span class="lineno"> 401</span>  theta = <a class="code" href="group__SE.html#ga63f2a3cfcfa86820bea2f45cb890cc1c" title="Common proof rules.">d_commonRules</a>-><a class="code" href="classCVC3_1_1CommonProofRules.html#aebbcd4a194e4fdca0bcd16143fb03a75">iffMP</a>(theta, <a class="code" href="group__SE.html#ga687e32d21d7fe7e4b26873ae86a47ae5" title="Replaces ITE subexpressions in e with variables.">replaceITE</a>(thetaExpr));</div>
<div class="line"><a name="l00402"></a><span class="lineno"> 402</span>  <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(!*<a class="code" href="group__SE.html#gaa28d7e60bbe1df69ffb304f939b984b7" title="Flag: whether to convert term ITEs into CNF.">d_ifLiftOption</a> || theta.<a class="code" href="classCVC3_1_1Theorem.html#aed1590a02166f6099e5538dbf681a60c" title="Check if the theorem is a literal.">isAbsLiteral</a>(),</div>
<div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  <span class="stringliteral">"Must be a literal: theta = "</span></div>
<div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  +theta.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>().<a class="code" href="group__ExprPkg.html#gaf3028bb1619f8cc69b66ec712e1adb54" title="Print the expression to a string.">toString</a>());</div>
<div class="line"><a name="l00405"></a><span class="lineno"> 405</span>  <a class="code" href="group__SE.html#gadebc5b605b4a358789b697e44065a97e" title="Add a new fact to the search engine bypassing CNF converter.">addCNFFact</a>(theta);</div>
<div class="line"><a name="l00406"></a><span class="lineno"> 406</span>  <a class="code" href="debug_8h.html#ad64155edafde9f067f4868817cd04bdf">TRACE_MSG</a>(<span class="stringliteral">"mycnf"</span>, <span class="stringliteral">"enqueueCNFrec[literal] => }"</span>);</div>
<div class="line"><a name="l00407"></a><span class="lineno"> 407</span>  <a class="code" href="kinds_8h.html#aa10c9e8951b8ccf714a59ec321bdac5ba7fa27e82c6c4f69434225ed81e5d151e">TRACE</a>(<span class="stringliteral">"cnf-clauses"</span>, <span class="stringliteral">"literal with proofs("</span>, theta.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>(), <span class="stringliteral">")"</span>);</div>
<div class="line"><a name="l00408"></a><span class="lineno"> 408</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00409"></a><span class="lineno"> 409</span>  }</div>
<div class="line"><a name="l00410"></a><span class="lineno"> 410</span>  </div>
<div class="line"><a name="l00411"></a><span class="lineno"> 411</span>  thetaExpr = theta.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>();</div>
<div class="line"><a name="l00412"></a><span class="lineno"> 412</span>  <span class="comment">// Obvious optimizations for AND and OR </span></div>
<div class="line"><a name="l00413"></a><span class="lineno"> 413</span>  <span class="keywordflow">switch</span>(thetaExpr.getKind()) {</div>
<div class="line"><a name="l00414"></a><span class="lineno"> 414</span>  <span class="keywordflow">case</span> <a class="code" href="kinds_8h.html#aa10c9e8951b8ccf714a59ec321bdac5ba865555c9f2e0458a7078486aa1b3254f">AND</a>:</div>
<div class="line"><a name="l00415"></a><span class="lineno"> 415</span>  <span class="comment">// Split up the top-level conjunction and translate individually</span></div>
<div class="line"><a name="l00416"></a><span class="lineno"> 416</span>  <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i=0; i<thetaExpr.arity(); i++)</div>
<div class="line"><a name="l00417"></a><span class="lineno"> 417</span>  <a class="code" href="group__SE.html#ga62e31e3c4dbadb6cc5fddc3b0b73e047" title="Recursive version of enqueueCNF()">enqueueCNFrec</a>(<a class="code" href="group__SE.html#ga63f2a3cfcfa86820bea2f45cb890cc1c" title="Common proof rules.">d_commonRules</a>-><a class="code" href="classCVC3_1_1CommonProofRules.html#a3f3592ac74d0aa0caa3b9224ea7e61f4">andElim</a>(theta, i));</div>
<div class="line"><a name="l00418"></a><span class="lineno"> 418</span>  <a class="code" href="debug_8h.html#ad64155edafde9f067f4868817cd04bdf">TRACE_MSG</a>(<span class="stringliteral">"mycnf"</span>, <span class="stringliteral">"enqueueCNFrec[AND] => }"</span>);</div>
<div class="line"><a name="l00419"></a><span class="lineno"> 419</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00420"></a><span class="lineno"> 420</span>  <span class="keywordflow">case</span> <a class="code" href="kinds_8h.html#aa10c9e8951b8ccf714a59ec321bdac5ba96727447c0ad447987df1c6415aef074">OR</a>: {</div>
<div class="line"><a name="l00421"></a><span class="lineno"> 421</span>  <span class="comment">// Check if we are already in CNF (ignoring ITEs in the terms),</span></div>
<div class="line"><a name="l00422"></a><span class="lineno"> 422</span>  <span class="comment">// and if we are, translate term ITEs on the way</span></div>
<div class="line"><a name="l00423"></a><span class="lineno"> 423</span>  <span class="keywordtype">bool</span> cnf(<span class="keyword">true</span>);</div>
<div class="line"><a name="l00424"></a><span class="lineno"> 424</span>  <a class="code" href="kinds_8h.html#aa10c9e8951b8ccf714a59ec321bdac5ba7fa27e82c6c4f69434225ed81e5d151e">TRACE</a>(<span class="stringliteral">"bv mycnf"</span>, <span class="stringliteral">"enqueueCNFrec[OR] ( "</span>, theta.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>().<a class="code" href="group__ExprPkg.html#gaf3028bb1619f8cc69b66ec712e1adb54" title="Print the expression to a string.">toString</a>(), <span class="stringliteral">")"</span>);</div>
<div class="line"><a name="l00425"></a><span class="lineno"> 425</span>  <span class="keywordflow">for</span>(<a class="code" href="classCVC3_1_1Expr_1_1iterator.html">Expr::iterator</a> i=thetaExpr.begin(),iend=thetaExpr.end();</div>
<div class="line"><a name="l00426"></a><span class="lineno"> 426</span>  i!=iend && cnf; i++) {</div>
<div class="line"><a name="l00427"></a><span class="lineno"> 427</span>  <span class="keywordflow">if</span>(!(*i).isPropLiteral())</div>
<div class="line"><a name="l00428"></a><span class="lineno"> 428</span>  cnf = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00429"></a><span class="lineno"> 429</span>  }</div>
<div class="line"><a name="l00430"></a><span class="lineno"> 430</span>  <span class="keywordflow">if</span>(cnf) {</div>
<div class="line"><a name="l00431"></a><span class="lineno"> 431</span>  vector<Theorem> thms;</div>
<div class="line"><a name="l00432"></a><span class="lineno"> 432</span>  vector<unsigned int> changed;</div>
<div class="line"><a name="l00433"></a><span class="lineno"> 433</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> cc=0;</div>
<div class="line"><a name="l00434"></a><span class="lineno"> 434</span>  <span class="keywordflow">for</span>(<a class="code" href="classCVC3_1_1Expr_1_1iterator.html">Expr::iterator</a> i=thetaExpr.begin(),iend=thetaExpr.end();</div>
<div class="line"><a name="l00435"></a><span class="lineno"> 435</span>  i!=iend; i++,cc++) {</div>
<div class="line"><a name="l00436"></a><span class="lineno"> 436</span>  <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a> thm = <a class="code" href="group__SE.html#ga687e32d21d7fe7e4b26873ae86a47ae5" title="Replaces ITE subexpressions in e with variables.">replaceITE</a>(*i); </div>
<div class="line"><a name="l00437"></a><span class="lineno"> 437</span>  <span class="keywordflow">if</span>(thm.<a class="code" href="classCVC3_1_1Theorem.html#a206c04f39fbbcacef2337148675553f4">getLHS</a>() != thm.<a class="code" href="classCVC3_1_1Theorem.html#a97d957fcbf9094480851b1d2e5d3729f">getRHS</a>()) {</div>
<div class="line"><a name="l00438"></a><span class="lineno"> 438</span>  thms.push_back(thm);</div>
<div class="line"><a name="l00439"></a><span class="lineno"> 439</span>  changed.push_back(cc);</div>
<div class="line"><a name="l00440"></a><span class="lineno"> 440</span>  }</div>
<div class="line"><a name="l00441"></a><span class="lineno"> 441</span>  }</div>
<div class="line"><a name="l00442"></a><span class="lineno"> 442</span>  <span class="keywordflow">if</span>(changed.size() > 0) {</div>
<div class="line"><a name="l00443"></a><span class="lineno"> 443</span>  <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a> rewrite =</div>
<div class="line"><a name="l00444"></a><span class="lineno"> 444</span>  <a class="code" href="group__SE.html#ga63f2a3cfcfa86820bea2f45cb890cc1c" title="Common proof rules.">d_commonRules</a>-><a class="code" href="classCVC3_1_1CommonProofRules.html#a776c827bb6e3b889234429c49ae9ad6f" title="Optimized case for expr with one child.">substitutivityRule</a>(theta.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>(), changed, thms);</div>
<div class="line"><a name="l00445"></a><span class="lineno"> 445</span>  theta = <a class="code" href="group__SE.html#ga63f2a3cfcfa86820bea2f45cb890cc1c" title="Common proof rules.">d_commonRules</a>-><a class="code" href="classCVC3_1_1CommonProofRules.html#aebbcd4a194e4fdca0bcd16143fb03a75">iffMP</a>(theta, rewrite);</div>
<div class="line"><a name="l00446"></a><span class="lineno"> 446</span>  }</div>
<div class="line"><a name="l00447"></a><span class="lineno"> 447</span>  <a class="code" href="group__SE.html#gadebc5b605b4a358789b697e44065a97e" title="Add a new fact to the search engine bypassing CNF converter.">addCNFFact</a>(theta);</div>
<div class="line"><a name="l00448"></a><span class="lineno"> 448</span>  <a class="code" href="debug_8h.html#ad64155edafde9f067f4868817cd04bdf">TRACE_MSG</a>(<span class="stringliteral">"mycnf"</span>, <span class="stringliteral">"enqueueCNFrec[cnf] => }"</span>);</div>
<div class="line"><a name="l00449"></a><span class="lineno"> 449</span>  <span class="keywordflow">return</span>; </div>
<div class="line"><a name="l00450"></a><span class="lineno"> 450</span>  }</div>
<div class="line"><a name="l00451"></a><span class="lineno"> 451</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00452"></a><span class="lineno"> 452</span>  }</div>
<div class="line"><a name="l00453"></a><span class="lineno"> 453</span>  <span class="keywordflow">case</span> <a class="code" href="kinds_8h.html#aa10c9e8951b8ccf714a59ec321bdac5ba527cb185631442655c4486d51522b5a7">IFF</a>: { <span class="comment">// Check for "var <=> phi" and "phi <=> var"</span></div>
<div class="line"><a name="l00454"></a><span class="lineno"> 454</span>  <span class="keyword">const</span> <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a>& t0 = thetaExpr[0];</div>
<div class="line"><a name="l00455"></a><span class="lineno"> 455</span>  <span class="keyword">const</span> <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a>& t1 = thetaExpr[1];</div>
<div class="line"><a name="l00456"></a><span class="lineno"> 456</span>  <span class="keywordflow">if</span>(t1.<a class="code" href="group__ExprPkg.html#gaccf96ea73570e38c5c7e4ad39ed8b509" title="PropAtom or negation of PropAtom.">isPropLiteral</a>()) {</div>
<div class="line"><a name="l00457"></a><span class="lineno"> 457</span>  <span class="keywordflow">if</span>(!t1.<a class="code" href="group__ExprPkg.html#gaac535dae48f02fcd093a5b1b1a062211" title="Test if e is an abstract literal.">isAbsLiteral</a>())</div>
<div class="line"><a name="l00458"></a><span class="lineno"> 458</span>  theta = <a class="code" href="group__SE.html#ga63f2a3cfcfa86820bea2f45cb890cc1c" title="Common proof rules.">d_commonRules</a>-><a class="code" href="classCVC3_1_1CommonProofRules.html#a4a4e90cd69ce24e83ba2c217907c277a" title=" (same for IFF)">transitivityRule</a>(theta, <a class="code" href="group__SE.html#ga687e32d21d7fe7e4b26873ae86a47ae5" title="Replaces ITE subexpressions in e with variables.">replaceITE</a>(t1));</div>
<div class="line"><a name="l00459"></a><span class="lineno"> 459</span>  <a class="code" href="group__SE.html#gaa7bf3c385bae481d4ea35179e818a09a" title="FIXME: write a comment.">applyCNFRules</a>(theta);</div>
<div class="line"><a name="l00460"></a><span class="lineno"> 460</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00461"></a><span class="lineno"> 461</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span>(thetaExpr[0].isPropLiteral()) {</div>
<div class="line"><a name="l00462"></a><span class="lineno"> 462</span>  theta = <a class="code" href="group__SE.html#ga63f2a3cfcfa86820bea2f45cb890cc1c" title="Common proof rules.">d_commonRules</a>-><a class="code" href="classCVC3_1_1CommonProofRules.html#a0a87e88508f49b73037e0024afa841bf" title=" (same for IFF)">symmetryRule</a>(theta);</div>
<div class="line"><a name="l00463"></a><span class="lineno"> 463</span>  <span class="keywordflow">if</span>(!t0.<a class="code" href="group__ExprPkg.html#gaac535dae48f02fcd093a5b1b1a062211" title="Test if e is an abstract literal.">isAbsLiteral</a>())</div>
<div class="line"><a name="l00464"></a><span class="lineno"> 464</span>  theta = <a class="code" href="group__SE.html#ga63f2a3cfcfa86820bea2f45cb890cc1c" title="Common proof rules.">d_commonRules</a>-><a class="code" href="classCVC3_1_1CommonProofRules.html#a4a4e90cd69ce24e83ba2c217907c277a" title=" (same for IFF)">transitivityRule</a>(theta, <a class="code" href="group__SE.html#ga687e32d21d7fe7e4b26873ae86a47ae5" title="Replaces ITE subexpressions in e with variables.">replaceITE</a>(t0));</div>
<div class="line"><a name="l00465"></a><span class="lineno"> 465</span>  <a class="code" href="group__SE.html#gaa7bf3c385bae481d4ea35179e818a09a" title="FIXME: write a comment.">applyCNFRules</a>(theta);</div>
<div class="line"><a name="l00466"></a><span class="lineno"> 466</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00467"></a><span class="lineno"> 467</span>  }</div>
<div class="line"><a name="l00468"></a><span class="lineno"> 468</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00469"></a><span class="lineno"> 469</span>  }</div>
<div class="line"><a name="l00470"></a><span class="lineno"> 470</span>  <span class="keywordflow">case</span> <a class="code" href="kinds_8h.html#aa10c9e8951b8ccf714a59ec321bdac5ba3a4cfaf3eae8eac1dc2fd27d9f0994dc">ITE</a>:</div>
<div class="line"><a name="l00471"></a><span class="lineno"> 471</span>  <span class="keywordflow">if</span>(thetaExpr[0].isPropLiteral() && thetaExpr[1].isPropLiteral()</div>
<div class="line"><a name="l00472"></a><span class="lineno"> 472</span>  && thetaExpr[2].isPropLiteral()) {</div>
<div class="line"><a name="l00473"></a><span class="lineno"> 473</span>  <span class="comment">// Replace ITEs</span></div>
<div class="line"><a name="l00474"></a><span class="lineno"> 474</span>  vector<Theorem> thms;</div>
<div class="line"><a name="l00475"></a><span class="lineno"> 475</span>  vector<unsigned int> changed;</div>
<div class="line"><a name="l00476"></a><span class="lineno"> 476</span>  <span class="keywordflow">for</span>(<span class="keywordtype">int</span> c=0, cend=thetaExpr.arity(); c<cend; ++c) {</div>
<div class="line"><a name="l00477"></a><span class="lineno"> 477</span>  <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a> thm = <a class="code" href="group__SE.html#ga687e32d21d7fe7e4b26873ae86a47ae5" title="Replaces ITE subexpressions in e with variables.">replaceITE</a>(thetaExpr[c]);</div>
<div class="line"><a name="l00478"></a><span class="lineno"> 478</span>  <span class="keywordflow">if</span>(thm.<a class="code" href="classCVC3_1_1Theorem.html#a206c04f39fbbcacef2337148675553f4">getLHS</a>() != thm.<a class="code" href="classCVC3_1_1Theorem.html#a97d957fcbf9094480851b1d2e5d3729f">getRHS</a>()) {</div>
<div class="line"><a name="l00479"></a><span class="lineno"> 479</span>  <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(!*<a class="code" href="group__SE.html#gaa28d7e60bbe1df69ffb304f939b984b7" title="Flag: whether to convert term ITEs into CNF.">d_ifLiftOption</a> || thm.<a class="code" href="classCVC3_1_1Theorem.html#a97d957fcbf9094480851b1d2e5d3729f">getRHS</a>().<a class="code" href="group__ExprPkg.html#gaac535dae48f02fcd093a5b1b1a062211" title="Test if e is an abstract literal.">isAbsLiteral</a>(),</div>
<div class="line"><a name="l00480"></a><span class="lineno"> 480</span>  <span class="stringliteral">"thm = "</span>+thm.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>().<a class="code" href="group__ExprPkg.html#gaf3028bb1619f8cc69b66ec712e1adb54" title="Print the expression to a string.">toString</a>());</div>
<div class="line"><a name="l00481"></a><span class="lineno"> 481</span>  thms.push_back(thm);</div>
<div class="line"><a name="l00482"></a><span class="lineno"> 482</span>  changed.push_back(c);</div>
<div class="line"><a name="l00483"></a><span class="lineno"> 483</span>  }</div>
<div class="line"><a name="l00484"></a><span class="lineno"> 484</span>  }</div>
<div class="line"><a name="l00485"></a><span class="lineno"> 485</span>  <span class="keywordflow">if</span>(changed.size() > 0) {</div>
<div class="line"><a name="l00486"></a><span class="lineno"> 486</span>  <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a> rewrite =</div>
<div class="line"><a name="l00487"></a><span class="lineno"> 487</span>  <a class="code" href="group__SE.html#ga63f2a3cfcfa86820bea2f45cb890cc1c" title="Common proof rules.">d_commonRules</a>-><a class="code" href="classCVC3_1_1CommonProofRules.html#a776c827bb6e3b889234429c49ae9ad6f" title="Optimized case for expr with one child.">substitutivityRule</a>(theta.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>(), changed, thms);</div>
<div class="line"><a name="l00488"></a><span class="lineno"> 488</span>  theta = <a class="code" href="group__SE.html#ga63f2a3cfcfa86820bea2f45cb890cc1c" title="Common proof rules.">d_commonRules</a>-><a class="code" href="classCVC3_1_1CommonProofRules.html#aebbcd4a194e4fdca0bcd16143fb03a75">iffMP</a>(theta, rewrite);</div>
<div class="line"><a name="l00489"></a><span class="lineno"> 489</span>  }</div>
<div class="line"><a name="l00490"></a><span class="lineno"> 490</span>  <span class="comment">// Convert to clauses</span></div>
<div class="line"><a name="l00491"></a><span class="lineno"> 491</span>  <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a> thm = <a class="code" href="group__SE.html#ga879b68112123e2b4ae7175d85a03bfec" title="Proof rules for the search engine.">d_rules</a>-><a class="code" href="group__SE__Rules.html#ga9b9c0fe62505477b6ec9774c1b5b2494" title="ITE(c, f1, f2) |- (NOT c OR f1) AND (c OR f2)">iteToClauses</a>(theta);</div>
<div class="line"><a name="l00492"></a><span class="lineno"> 492</span>  <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(thm.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>().<a class="code" href="group__ExprPkg.html#ga383260cf4f8919728e2712e6e11f21fa">isAnd</a>() && thm.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>().<a class="code" href="group__ExprPkg.html#ga28b901d05e52a5c646f83a95cc74f94b">arity</a>()==2,</div>
<div class="line"><a name="l00493"></a><span class="lineno"> 493</span>  <span class="stringliteral">"enqueueCNFrec [ITE over literals]\n thm = "</span></div>
<div class="line"><a name="l00494"></a><span class="lineno"> 494</span>  +thm.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>().<a class="code" href="group__ExprPkg.html#gaf3028bb1619f8cc69b66ec712e1adb54" title="Print the expression to a string.">toString</a>());</div>
<div class="line"><a name="l00495"></a><span class="lineno"> 495</span>  <a class="code" href="group__SE.html#gadebc5b605b4a358789b697e44065a97e" title="Add a new fact to the search engine bypassing CNF converter.">addCNFFact</a>(<a class="code" href="group__SE.html#ga63f2a3cfcfa86820bea2f45cb890cc1c" title="Common proof rules.">d_commonRules</a>-><a class="code" href="classCVC3_1_1CommonProofRules.html#a3f3592ac74d0aa0caa3b9224ea7e61f4">andElim</a>(thm, 0));</div>
<div class="line"><a name="l00496"></a><span class="lineno"> 496</span>  <a class="code" href="group__SE.html#gadebc5b605b4a358789b697e44065a97e" title="Add a new fact to the search engine bypassing CNF converter.">addCNFFact</a>(<a class="code" href="group__SE.html#ga63f2a3cfcfa86820bea2f45cb890cc1c" title="Common proof rules.">d_commonRules</a>-><a class="code" href="classCVC3_1_1CommonProofRules.html#a3f3592ac74d0aa0caa3b9224ea7e61f4">andElim</a>(thm, 1));</div>
<div class="line"><a name="l00497"></a><span class="lineno"> 497</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00498"></a><span class="lineno"> 498</span>  }</div>
<div class="line"><a name="l00499"></a><span class="lineno"> 499</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00500"></a><span class="lineno"> 500</span>  <span class="keywordflow">default</span>: </div>
<div class="line"><a name="l00501"></a><span class="lineno"> 501</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00502"></a><span class="lineno"> 502</span>  }</div>
<div class="line"><a name="l00503"></a><span class="lineno"> 503</span> </div>
<div class="line"><a name="l00504"></a><span class="lineno"> 504</span>  <span class="comment">// Now do the real work</span></div>
<div class="line"><a name="l00505"></a><span class="lineno"> 505</span>  <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a> res = <a class="code" href="group__SE.html#ga298ad740ab490d5b3337445573b8c4d7" title="Find a theorem phi <=> v by phi, where v is a literal.">findInCNFCache</a>(theta.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>());</div>
<div class="line"><a name="l00506"></a><span class="lineno"> 506</span>  <span class="keywordflow">if</span>(!res.<a class="code" href="classCVC3_1_1Theorem.html#afc6fdb0507eb3669e28d9be5ed0bd333">isNull</a>()) {</div>
<div class="line"><a name="l00507"></a><span class="lineno"> 507</span>  <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a> thm = <a class="code" href="group__SE.html#ga63f2a3cfcfa86820bea2f45cb890cc1c" title="Common proof rules.">d_commonRules</a>-><a class="code" href="classCVC3_1_1CommonProofRules.html#aebbcd4a194e4fdca0bcd16143fb03a75">iffMP</a>(theta, res);</div>
<div class="line"><a name="l00508"></a><span class="lineno"> 508</span>  <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(thm.<a class="code" href="classCVC3_1_1Theorem.html#aed1590a02166f6099e5538dbf681a60c" title="Check if the theorem is a literal.">isAbsLiteral</a>(), <span class="stringliteral">"thm = "</span>+thm.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>().<a class="code" href="group__ExprPkg.html#gaf3028bb1619f8cc69b66ec712e1adb54" title="Print the expression to a string.">toString</a>());</div>
<div class="line"><a name="l00509"></a><span class="lineno"> 509</span>  <a class="code" href="group__SE.html#gadebc5b605b4a358789b697e44065a97e" title="Add a new fact to the search engine bypassing CNF converter.">addCNFFact</a>(thm);</div>
<div class="line"><a name="l00510"></a><span class="lineno"> 510</span>  <a class="code" href="kinds_8h.html#aa10c9e8951b8ccf714a59ec321bdac5ba7fa27e82c6c4f69434225ed81e5d151e">TRACE</a>(<span class="stringliteral">"cnf-clauses"</span>, <span class="stringliteral">"enqueueCNFrec call[cache hit]:("</span>,</div>
<div class="line"><a name="l00511"></a><span class="lineno"> 511</span>  thm.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>(), <span class="stringliteral">")"</span>);</div>
<div class="line"><a name="l00512"></a><span class="lineno"> 512</span>  <a class="code" href="group__SE.html#gaa7bf3c385bae481d4ea35179e818a09a" title="FIXME: write a comment.">applyCNFRules</a>(res);</div>
<div class="line"><a name="l00513"></a><span class="lineno"> 513</span>  <a class="code" href="debug_8h.html#ad64155edafde9f067f4868817cd04bdf">TRACE_MSG</a>(<span class="stringliteral">"mycnf"</span>, <span class="stringliteral">"enqueueCNFrec[cached] => }"</span>);</div>
<div class="line"><a name="l00514"></a><span class="lineno"> 514</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00515"></a><span class="lineno"> 515</span>  }</div>
<div class="line"><a name="l00516"></a><span class="lineno"> 516</span> </div>
<div class="line"><a name="l00517"></a><span class="lineno"> 517</span>  <span class="comment">// std::vector<Theorem> clauses;</span></div>
<div class="line"><a name="l00518"></a><span class="lineno"> 518</span>  <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a> result;</div>
<div class="line"><a name="l00519"></a><span class="lineno"> 519</span>  <span class="comment">// (\phi <==> v)</span></div>
<div class="line"><a name="l00520"></a><span class="lineno"> 520</span>  result = <a class="code" href="group__SE.html#ga63f2a3cfcfa86820bea2f45cb890cc1c" title="Common proof rules.">d_commonRules</a>-><a class="code" href="classCVC3_1_1CommonProofRules.html#a10fa187373ec24079c10874d8e804ecb" title="Retrun a theorem "|- e = v" for a new Skolem constant v.">varIntroSkolem</a>(theta.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>());</div>
<div class="line"><a name="l00521"></a><span class="lineno"> 521</span> </div>
<div class="line"><a name="l00522"></a><span class="lineno"> 522</span>  <a class="code" href="kinds_8h.html#aa10c9e8951b8ccf714a59ec321bdac5ba7fa27e82c6c4f69434225ed81e5d151e">TRACE</a>(<span class="stringliteral">"mycnf"</span>, <span class="stringliteral">"enqueueCNFrec: varIntroSkolem => "</span>, result.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>(),</div>
<div class="line"><a name="l00523"></a><span class="lineno"> 523</span>  <span class="stringliteral">" @ "</span>+<a class="code" href="namespaceCVC3.html#af69618103f1f0f2eadada0796a2a940c">int2string</a>(result.<a class="code" href="classCVC3_1_1Theorem.html#a112466d9793abcf97015233ffdc4ec5e">getScope</a>())</div>
<div class="line"><a name="l00524"></a><span class="lineno"> 524</span>  +<span class="stringliteral">" (current="</span>+<a class="code" href="namespaceCVC3.html#af69618103f1f0f2eadada0796a2a940c">int2string</a>(<a class="code" href="group__SE.html#gab267d9f29c30c8e26b5c7bcc4d15306a" title="Return the current scope level (for convenience)">scopeLevel</a>())+<span class="stringliteral">")"</span>);</div>
<div class="line"><a name="l00525"></a><span class="lineno"> 525</span> </div>
<div class="line"><a name="l00526"></a><span class="lineno"> 526</span>  <span class="comment">//result = skolemize(result, false);</span></div>
<div class="line"><a name="l00527"></a><span class="lineno"> 527</span> </div>
<div class="line"><a name="l00528"></a><span class="lineno"> 528</span>  <a class="code" href="kinds_8h.html#aa10c9e8951b8ccf714a59ec321bdac5ba7fa27e82c6c4f69434225ed81e5d151e">TRACE</a>(<span class="stringliteral">"mycnf"</span>, <span class="stringliteral">"enqueueCNFrec: skolemize => "</span>, result.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>(),</div>
<div class="line"><a name="l00529"></a><span class="lineno"> 529</span>  <span class="stringliteral">" @ "</span>+<a class="code" href="namespaceCVC3.html#af69618103f1f0f2eadada0796a2a940c">int2string</a>(result.<a class="code" href="classCVC3_1_1Theorem.html#a112466d9793abcf97015233ffdc4ec5e">getScope</a>())</div>
<div class="line"><a name="l00530"></a><span class="lineno"> 530</span>  +<span class="stringliteral">" (current="</span>+<a class="code" href="namespaceCVC3.html#af69618103f1f0f2eadada0796a2a940c">int2string</a>(<a class="code" href="group__SE.html#gab267d9f29c30c8e26b5c7bcc4d15306a" title="Return the current scope level (for convenience)">scopeLevel</a>())+<span class="stringliteral">")"</span>);</div>
<div class="line"><a name="l00531"></a><span class="lineno"> 531</span>  <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(result.<a class="code" href="classCVC3_1_1Theorem.html#a362c1d70e03803d804bbe300e5f6dc87">isRewrite</a>(),</div>
<div class="line"><a name="l00532"></a><span class="lineno"> 532</span>  <span class="stringliteral">"SearchImplBase::CNF(): result = "</span>+result.<a class="code" href="classCVC3_1_1Theorem.html#ac4b1c9570ffb9cc901627ef2abb9ff77">toString</a>());</div>
<div class="line"><a name="l00533"></a><span class="lineno"> 533</span>  <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(!result.<a class="code" href="classCVC3_1_1Theorem.html#a206c04f39fbbcacef2337148675553f4">getLHS</a>().<a class="code" href="group__ExprPkg.html#gaccf96ea73570e38c5c7e4ad39ed8b509" title="PropAtom or negation of PropAtom.">isPropLiteral</a>() && </div>
<div class="line"><a name="l00534"></a><span class="lineno"> 534</span>  result.<a class="code" href="classCVC3_1_1Theorem.html#a97d957fcbf9094480851b1d2e5d3729f">getRHS</a>().<a class="code" href="group__ExprPkg.html#gaccf96ea73570e38c5c7e4ad39ed8b509" title="PropAtom or negation of PropAtom.">isPropLiteral</a>(),</div>
<div class="line"><a name="l00535"></a><span class="lineno"> 535</span>  <span class="stringliteral">"SearchImplBase::CNF(): result = "</span>+result.<a class="code" href="classCVC3_1_1Theorem.html#ac4b1c9570ffb9cc901627ef2abb9ff77">toString</a>());</div>
<div class="line"><a name="l00536"></a><span class="lineno"> 536</span>  <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(result.<a class="code" href="classCVC3_1_1Theorem.html#a206c04f39fbbcacef2337148675553f4">getLHS</a>() == theta.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>(),</div>
<div class="line"><a name="l00537"></a><span class="lineno"> 537</span>  <span class="stringliteral">"SearchImplBase::CNF(): result = "</span>+result.<a class="code" href="classCVC3_1_1Theorem.html#ac4b1c9570ffb9cc901627ef2abb9ff77">toString</a>()</div>
<div class="line"><a name="l00538"></a><span class="lineno"> 538</span>  +<span class="stringliteral">"\n theta = "</span>+theta.<a class="code" href="classCVC3_1_1Theorem.html#ac4b1c9570ffb9cc901627ef2abb9ff77">toString</a>());</div>
<div class="line"><a name="l00539"></a><span class="lineno"> 539</span>  </div>
<div class="line"><a name="l00540"></a><span class="lineno"> 540</span>  <span class="comment">//enqueue v</span></div>
<div class="line"><a name="l00541"></a><span class="lineno"> 541</span>  <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a> var(<a class="code" href="group__SE.html#ga63f2a3cfcfa86820bea2f45cb890cc1c" title="Common proof rules.">d_commonRules</a>-><a class="code" href="classCVC3_1_1CommonProofRules.html#aebbcd4a194e4fdca0bcd16143fb03a75">iffMP</a>(theta, result));</div>
<div class="line"><a name="l00542"></a><span class="lineno"> 542</span>  <span class="comment">// Add variable to the set of CNF vars</span></div>
<div class="line"><a name="l00543"></a><span class="lineno"> 543</span>  <a class="code" href="group__SE.html#ga1c64a37d94b4cadedce29f3e4b98a3af" title="Backtracking set of new variables generated by CNF translator.">d_cnfVars</a>[var.getExpr()] = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00544"></a><span class="lineno"> 544</span>  <a class="code" href="kinds_8h.html#aa10c9e8951b8ccf714a59ec321bdac5ba7fa27e82c6c4f69434225ed81e5d151e">TRACE</a>(<span class="stringliteral">"mycnf"</span>, <span class="stringliteral">"enqueueCNFrec: theta = "</span>, theta.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>(),</div>
<div class="line"><a name="l00545"></a><span class="lineno"> 545</span>  <span class="stringliteral">" @ "</span>+<a class="code" href="namespaceCVC3.html#af69618103f1f0f2eadada0796a2a940c">int2string</a>(theta.<a class="code" href="classCVC3_1_1Theorem.html#a112466d9793abcf97015233ffdc4ec5e">getScope</a>())</div>
<div class="line"><a name="l00546"></a><span class="lineno"> 546</span>  +<span class="stringliteral">" (current="</span>+<a class="code" href="namespaceCVC3.html#af69618103f1f0f2eadada0796a2a940c">int2string</a>(<a class="code" href="group__SE.html#gab267d9f29c30c8e26b5c7bcc4d15306a" title="Return the current scope level (for convenience)">scopeLevel</a>())+<span class="stringliteral">")"</span>);</div>
<div class="line"><a name="l00547"></a><span class="lineno"> 547</span>  <a class="code" href="kinds_8h.html#aa10c9e8951b8ccf714a59ec321bdac5ba7fa27e82c6c4f69434225ed81e5d151e">TRACE</a>(<span class="stringliteral">"mycnf"</span>, <span class="stringliteral">"enqueueCNFrec: var = "</span>, var.getExpr(),</div>
<div class="line"><a name="l00548"></a><span class="lineno"> 548</span>  <span class="stringliteral">" @ "</span>+<a class="code" href="namespaceCVC3.html#af69618103f1f0f2eadada0796a2a940c">int2string</a>(var.getScope())</div>
<div class="line"><a name="l00549"></a><span class="lineno"> 549</span>  +<span class="stringliteral">" (current="</span>+<a class="code" href="namespaceCVC3.html#af69618103f1f0f2eadada0796a2a940c">int2string</a>(<a class="code" href="group__SE.html#gab267d9f29c30c8e26b5c7bcc4d15306a" title="Return the current scope level (for convenience)">scopeLevel</a>())+<span class="stringliteral">")"</span>);</div>
<div class="line"><a name="l00550"></a><span class="lineno"> 550</span>  <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(var.isAbsLiteral(), <span class="stringliteral">"var = "</span>+var.getExpr().toString());</div>
<div class="line"><a name="l00551"></a><span class="lineno"> 551</span>  <a class="code" href="group__SE.html#gadebc5b605b4a358789b697e44065a97e" title="Add a new fact to the search engine bypassing CNF converter.">addCNFFact</a>(var);</div>
<div class="line"><a name="l00552"></a><span class="lineno"> 552</span>  <span class="comment">// phi <=> v</span></div>
<div class="line"><a name="l00553"></a><span class="lineno"> 553</span>  <a class="code" href="group__SE.html#gaa78fb38536d0a2e34ad140f3ec865f2b" title="Cache a theorem phi <=> v by phi, where v is a literal.">addToCNFCache</a>(result);</div>
<div class="line"><a name="l00554"></a><span class="lineno"> 554</span>  <a class="code" href="group__SE.html#gaa7bf3c385bae481d4ea35179e818a09a" title="FIXME: write a comment.">applyCNFRules</a>(result);</div>
<div class="line"><a name="l00555"></a><span class="lineno"> 555</span>  <a class="code" href="debug_8h.html#ad64155edafde9f067f4868817cd04bdf">TRACE_MSG</a>(<span class="stringliteral">"mycnf"</span>, <span class="stringliteral">"enqueueCNFrec => }"</span>);</div>
<div class="line"><a name="l00556"></a><span class="lineno"> 556</span> }</div>
<div class="line"><a name="l00557"></a><span class="lineno"> 557</span> </div>
<div class="line"><a name="l00558"></a><span class="lineno"> 558</span> <span class="comment"></span></div>
<div class="line"><a name="l00559"></a><span class="lineno"> 559</span> <span class="comment">/*!</span></div>
<div class="line"><a name="l00560"></a><span class="lineno"> 560</span> <span class="comment"> * \param thm is the input of the form phi <=> v</span></div>
<div class="line"><a name="l00561"></a><span class="lineno"> 561</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00562"></a><span class="lineno"> 562</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00563"></a><span class="lineno"><a class="code" href="group__SE.html#gaa7bf3c385bae481d4ea35179e818a09a"> 563</a></span> <a class="code" href="group__SE.html#gaa7bf3c385bae481d4ea35179e818a09a" title="FIXME: write a comment.">SearchImplBase::applyCNFRules</a>(<span class="keyword">const</span> <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a>& thm) {</div>
<div class="line"><a name="l00564"></a><span class="lineno"> 564</span>  <a class="code" href="kinds_8h.html#aa10c9e8951b8ccf714a59ec321bdac5ba7fa27e82c6c4f69434225ed81e5d151e">TRACE</a>(<span class="stringliteral">"mycnf"</span>, <span class="stringliteral">"applyCNFRules("</span>, thm.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>(), <span class="stringliteral">") { "</span>);</div>
<div class="line"><a name="l00565"></a><span class="lineno"> 565</span>  </div>
<div class="line"><a name="l00566"></a><span class="lineno"> 566</span>  <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a> result = thm;</div>
<div class="line"><a name="l00567"></a><span class="lineno"> 567</span>  <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(result.isRewrite(),</div>
<div class="line"><a name="l00568"></a><span class="lineno"> 568</span>  <span class="stringliteral">"SearchImplBase::applyCNFRules: input must be an iff: "</span> + </div>
<div class="line"><a name="l00569"></a><span class="lineno"> 569</span>  result.getExpr().toString());</div>
<div class="line"><a name="l00570"></a><span class="lineno"> 570</span>  <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a> lhs = result.getLHS();</div>
<div class="line"><a name="l00571"></a><span class="lineno"> 571</span>  <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a> rhs = result.getRHS();</div>
<div class="line"><a name="l00572"></a><span class="lineno"> 572</span>  <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(rhs.<a class="code" href="group__ExprPkg.html#gaac535dae48f02fcd093a5b1b1a062211" title="Test if e is an abstract literal.">isAbsLiteral</a>(),</div>
<div class="line"><a name="l00573"></a><span class="lineno"> 573</span>  <span class="stringliteral">"SearchImplBase::applyCNFRules: rhs of input must be literal: "</span> +</div>
<div class="line"><a name="l00574"></a><span class="lineno"> 574</span>  result.getExpr().toString());</div>
<div class="line"><a name="l00575"></a><span class="lineno"> 575</span> </div>
<div class="line"><a name="l00576"></a><span class="lineno"> 576</span>  <span class="comment">// Eliminate negation first</span></div>
<div class="line"><a name="l00577"></a><span class="lineno"> 577</span>  <span class="keywordflow">while</span>(result.getLHS().isNot())</div>
<div class="line"><a name="l00578"></a><span class="lineno"> 578</span>  result = <a class="code" href="group__SE.html#ga63f2a3cfcfa86820bea2f45cb890cc1c" title="Common proof rules.">d_commonRules</a>-><a class="code" href="classCVC3_1_1CommonProofRules.html#af38f25446a561384c3de66392c4d3544" title="e1 <=> e2 ==> ~e1 <=> ~e2">iffContrapositive</a>(result);</div>
<div class="line"><a name="l00579"></a><span class="lineno"> 579</span>  lhs = result.<a class="code" href="classCVC3_1_1Theorem.html#a206c04f39fbbcacef2337148675553f4">getLHS</a>();</div>
<div class="line"><a name="l00580"></a><span class="lineno"> 580</span>  rhs = result.getRHS();</div>
<div class="line"><a name="l00581"></a><span class="lineno"> 581</span>  </div>
<div class="line"><a name="l00582"></a><span class="lineno"> 582</span>  <a class="code" href="classCVC3_1_1CDMap.html">CDMap<Expr,bool>::iterator</a> it = <a class="code" href="group__SE.html#ga401319b3ede7162504e979aaf2119deb" title="Cache for applyCNFRules()">d_applyCNFRulesCache</a>.<a class="code" href="classCVC3_1_1CDMap.html#a1cadecbd2d6fa614a2f2e9419aa43f33">find</a>(lhs);</div>
<div class="line"><a name="l00583"></a><span class="lineno"> 583</span>  <span class="keywordflow">if</span>(it == <a class="code" href="group__SE.html#ga401319b3ede7162504e979aaf2119deb" title="Cache for applyCNFRules()">d_applyCNFRulesCache</a>.<a class="code" href="classCVC3_1_1CDMap.html#a2a26c7cc4db12cb17d273db5cfa5a890">end</a>())</div>
<div class="line"><a name="l00584"></a><span class="lineno"> 584</span>  <a class="code" href="group__SE.html#ga401319b3ede7162504e979aaf2119deb" title="Cache for applyCNFRules()">d_applyCNFRulesCache</a>[lhs] = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00585"></a><span class="lineno"> 585</span>  <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00586"></a><span class="lineno"> 586</span>  <a class="code" href="debug_8h.html#ad64155edafde9f067f4868817cd04bdf">TRACE_MSG</a>(<span class="stringliteral">"mycnf"</span>,<span class="stringliteral">"applyCNFRules[temp cache] => }"</span>);</div>
<div class="line"><a name="l00587"></a><span class="lineno"> 587</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00588"></a><span class="lineno"> 588</span>  }</div>
<div class="line"><a name="l00589"></a><span class="lineno"> 589</span>  </div>
<div class="line"><a name="l00590"></a><span class="lineno"> 590</span>  <span class="comment">// Catch the trivial case v1 <=> v2</span></div>
<div class="line"><a name="l00591"></a><span class="lineno"> 591</span>  <span class="keywordflow">if</span>(lhs.isPropLiteral()) {</div>
<div class="line"><a name="l00592"></a><span class="lineno"> 592</span>  <span class="keywordflow">if</span>(!lhs.isAbsLiteral()) {</div>
<div class="line"><a name="l00593"></a><span class="lineno"> 593</span>  <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a> replaced = <a class="code" href="group__SE.html#ga63f2a3cfcfa86820bea2f45cb890cc1c" title="Common proof rules.">d_commonRules</a>-><a class="code" href="classCVC3_1_1CommonProofRules.html#a0a87e88508f49b73037e0024afa841bf" title=" (same for IFF)">symmetryRule</a>(<a class="code" href="group__SE.html#ga687e32d21d7fe7e4b26873ae86a47ae5" title="Replaces ITE subexpressions in e with variables.">replaceITE</a>(lhs));</div>
<div class="line"><a name="l00594"></a><span class="lineno"> 594</span>  result = <a class="code" href="group__SE.html#ga63f2a3cfcfa86820bea2f45cb890cc1c" title="Common proof rules.">d_commonRules</a>-><a class="code" href="classCVC3_1_1CommonProofRules.html#a4a4e90cd69ce24e83ba2c217907c277a" title=" (same for IFF)">transitivityRule</a>(replaced, result);</div>
<div class="line"><a name="l00595"></a><span class="lineno"> 595</span>  lhs = result.<a class="code" href="classCVC3_1_1Theorem.html#a206c04f39fbbcacef2337148675553f4">getLHS</a>();</div>
<div class="line"><a name="l00596"></a><span class="lineno"> 596</span>  <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(rhs == result.getRHS(),</div>
<div class="line"><a name="l00597"></a><span class="lineno"> 597</span>  <span class="stringliteral">"applyCNFRules [literal lhs]\n result = "</span></div>
<div class="line"><a name="l00598"></a><span class="lineno"> 598</span>  +result.getExpr().<a class="code" href="group__ExprPkg.html#gaf3028bb1619f8cc69b66ec712e1adb54" title="Print the expression to a string.">toString</a>()</div>
<div class="line"><a name="l00599"></a><span class="lineno"> 599</span>  +<span class="stringliteral">"\n rhs = "</span>+rhs.<a class="code" href="group__ExprPkg.html#gaf3028bb1619f8cc69b66ec712e1adb54" title="Print the expression to a string.">toString</a>());</div>
<div class="line"><a name="l00600"></a><span class="lineno"> 600</span>  }</div>
<div class="line"><a name="l00601"></a><span class="lineno"> 601</span>  <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a> thm = <a class="code" href="group__SE.html#ga879b68112123e2b4ae7175d85a03bfec" title="Proof rules for the search engine.">d_rules</a>-><a class="code" href="group__SE__Rules.html#ga356cd5a36ede50921fbaa3bc7e222d4f" title="e1 <=> e2 |- (NOT e1 OR e2) AND (e1 OR NOT e2)">iffToClauses</a>(result);</div>
<div class="line"><a name="l00602"></a><span class="lineno"> 602</span>  <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(thm.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>().<a class="code" href="group__ExprPkg.html#ga383260cf4f8919728e2712e6e11f21fa">isAnd</a>() && thm.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>().<a class="code" href="group__ExprPkg.html#ga28b901d05e52a5c646f83a95cc74f94b">arity</a>()==2,</div>
<div class="line"><a name="l00603"></a><span class="lineno"> 603</span>  <span class="stringliteral">"applyCNFRules [literal lhs]\n thm = "</span></div>
<div class="line"><a name="l00604"></a><span class="lineno"> 604</span>  +thm.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>().<a class="code" href="group__ExprPkg.html#gaf3028bb1619f8cc69b66ec712e1adb54" title="Print the expression to a string.">toString</a>());</div>
<div class="line"><a name="l00605"></a><span class="lineno"> 605</span>  <a class="code" href="group__SE.html#gadebc5b605b4a358789b697e44065a97e" title="Add a new fact to the search engine bypassing CNF converter.">addCNFFact</a>(<a class="code" href="group__SE.html#ga63f2a3cfcfa86820bea2f45cb890cc1c" title="Common proof rules.">d_commonRules</a>-><a class="code" href="classCVC3_1_1CommonProofRules.html#a3f3592ac74d0aa0caa3b9224ea7e61f4">andElim</a>(thm, 0));</div>
<div class="line"><a name="l00606"></a><span class="lineno"> 606</span>  <a class="code" href="group__SE.html#gadebc5b605b4a358789b697e44065a97e" title="Add a new fact to the search engine bypassing CNF converter.">addCNFFact</a>(<a class="code" href="group__SE.html#ga63f2a3cfcfa86820bea2f45cb890cc1c" title="Common proof rules.">d_commonRules</a>-><a class="code" href="classCVC3_1_1CommonProofRules.html#a3f3592ac74d0aa0caa3b9224ea7e61f4">andElim</a>(thm, 1));</div>
<div class="line"><a name="l00607"></a><span class="lineno"> 607</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00608"></a><span class="lineno"> 608</span>  }</div>
<div class="line"><a name="l00609"></a><span class="lineno"> 609</span>  </div>
<div class="line"><a name="l00610"></a><span class="lineno"> 610</span>  <span class="comment">// Check the kids in e[0], replace them with cache[e[0][i]], rebuild thm</span></div>
<div class="line"><a name="l00611"></a><span class="lineno"> 611</span>  vector<unsigned> changed;</div>
<div class="line"><a name="l00612"></a><span class="lineno"> 612</span>  vector<Theorem> substitutions;</div>
<div class="line"><a name="l00613"></a><span class="lineno"> 613</span>  <span class="keywordtype">int</span> c=0;</div>
<div class="line"><a name="l00614"></a><span class="lineno"> 614</span>  <span class="keywordflow">for</span>(<a class="code" href="classCVC3_1_1Expr_1_1iterator.html">Expr::iterator</a> j = lhs.begin(), jend = lhs.end(); j!=jend; ++c,++j) {</div>
<div class="line"><a name="l00615"></a><span class="lineno"> 615</span>  <span class="keyword">const</span> <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a>& phi = *j;</div>
<div class="line"><a name="l00616"></a><span class="lineno"> 616</span>  <span class="keywordflow">if</span>(!phi.<a class="code" href="group__ExprPkg.html#gaccf96ea73570e38c5c7e4ad39ed8b509" title="PropAtom or negation of PropAtom.">isPropLiteral</a>()) {</div>
<div class="line"><a name="l00617"></a><span class="lineno"> 617</span>  <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a> phiIffVar = <a class="code" href="group__SE.html#ga298ad740ab490d5b3337445573b8c4d7" title="Find a theorem phi <=> v by phi, where v is a literal.">findInCNFCache</a>(phi);</div>
<div class="line"><a name="l00618"></a><span class="lineno"> 618</span>  <span class="keywordflow">if</span>(phiIffVar.<a class="code" href="classCVC3_1_1Theorem.html#afc6fdb0507eb3669e28d9be5ed0bd333">isNull</a>()) {</div>
<div class="line"><a name="l00619"></a><span class="lineno"> 619</span>  <span class="comment">// Create a new variable for this child</span></div>
<div class="line"><a name="l00620"></a><span class="lineno"> 620</span>  phiIffVar = <a class="code" href="group__SE.html#ga63f2a3cfcfa86820bea2f45cb890cc1c" title="Common proof rules.">d_commonRules</a>-><a class="code" href="classCVC3_1_1CommonProofRules.html#a10fa187373ec24079c10874d8e804ecb" title="Retrun a theorem "|- e = v" for a new Skolem constant v.">varIntroSkolem</a>(phi);</div>
<div class="line"><a name="l00621"></a><span class="lineno"> 621</span>  <a class="code" href="group__SE.html#gaa78fb38536d0a2e34ad140f3ec865f2b" title="Cache a theorem phi <=> v by phi, where v is a literal.">addToCNFCache</a>(phiIffVar);</div>
<div class="line"><a name="l00622"></a><span class="lineno"> 622</span>  }</div>
<div class="line"><a name="l00623"></a><span class="lineno"> 623</span>  <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(phiIffVar.<a class="code" href="classCVC3_1_1Theorem.html#a362c1d70e03803d804bbe300e5f6dc87">isRewrite</a>(),</div>
<div class="line"><a name="l00624"></a><span class="lineno"> 624</span>  <span class="stringliteral">"SearchImplBase::applyCNFRules: result = "</span> +</div>
<div class="line"><a name="l00625"></a><span class="lineno"> 625</span>  result.toString());</div>
<div class="line"><a name="l00626"></a><span class="lineno"> 626</span>  <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(phi == phiIffVar.<a class="code" href="classCVC3_1_1Theorem.html#a206c04f39fbbcacef2337148675553f4">getLHS</a>(),</div>
<div class="line"><a name="l00627"></a><span class="lineno"> 627</span>  <span class="stringliteral">"SearchImplBase::applyCNFRules:\n phi = "</span> + </div>
<div class="line"><a name="l00628"></a><span class="lineno"> 628</span>  phi.<a class="code" href="group__ExprPkg.html#gaf3028bb1619f8cc69b66ec712e1adb54" title="Print the expression to a string.">toString</a>()</div>
<div class="line"><a name="l00629"></a><span class="lineno"> 629</span>  + <span class="stringliteral">"\n\n phiIffVar = "</span> + phiIffVar.<a class="code" href="classCVC3_1_1Theorem.html#ac4b1c9570ffb9cc901627ef2abb9ff77">toString</a>());</div>
<div class="line"><a name="l00630"></a><span class="lineno"> 630</span>  <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(phiIffVar.<a class="code" href="classCVC3_1_1Theorem.html#a97d957fcbf9094480851b1d2e5d3729f">getRHS</a>().<a class="code" href="group__ExprPkg.html#gaac535dae48f02fcd093a5b1b1a062211" title="Test if e is an abstract literal.">isAbsLiteral</a>(),</div>
<div class="line"><a name="l00631"></a><span class="lineno"> 631</span>  <span class="stringliteral">"SearchImplBase::applyCNFRules: phiIffVar = "</span> +</div>
<div class="line"><a name="l00632"></a><span class="lineno"> 632</span>  phiIffVar.<a class="code" href="classCVC3_1_1Theorem.html#ac4b1c9570ffb9cc901627ef2abb9ff77">toString</a>());</div>
<div class="line"><a name="l00633"></a><span class="lineno"> 633</span>  changed.push_back(c);</div>
<div class="line"><a name="l00634"></a><span class="lineno"> 634</span>  substitutions.push_back(phiIffVar);</div>
<div class="line"><a name="l00635"></a><span class="lineno"> 635</span>  <a class="code" href="group__SE.html#gaa7bf3c385bae481d4ea35179e818a09a" title="FIXME: write a comment.">applyCNFRules</a>(phiIffVar);</div>
<div class="line"><a name="l00636"></a><span class="lineno"> 636</span>  }</div>
<div class="line"><a name="l00637"></a><span class="lineno"> 637</span>  }</div>
<div class="line"><a name="l00638"></a><span class="lineno"> 638</span>  <span class="keywordflow">if</span>(changed.size() > 0) {</div>
<div class="line"><a name="l00639"></a><span class="lineno"> 639</span>  <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a> subst = </div>
<div class="line"><a name="l00640"></a><span class="lineno"> 640</span>  <a class="code" href="group__SE.html#ga63f2a3cfcfa86820bea2f45cb890cc1c" title="Common proof rules.">d_commonRules</a>-><a class="code" href="classCVC3_1_1CommonProofRules.html#a776c827bb6e3b889234429c49ae9ad6f" title="Optimized case for expr with one child.">substitutivityRule</a>(lhs, changed, substitutions);</div>
<div class="line"><a name="l00641"></a><span class="lineno"> 641</span>  subst = <a class="code" href="group__SE.html#ga63f2a3cfcfa86820bea2f45cb890cc1c" title="Common proof rules.">d_commonRules</a>-><a class="code" href="classCVC3_1_1CommonProofRules.html#a0a87e88508f49b73037e0024afa841bf" title=" (same for IFF)">symmetryRule</a>(subst);</div>
<div class="line"><a name="l00642"></a><span class="lineno"> 642</span>  result = <a class="code" href="group__SE.html#ga63f2a3cfcfa86820bea2f45cb890cc1c" title="Common proof rules.">d_commonRules</a>-><a class="code" href="classCVC3_1_1CommonProofRules.html#a4a4e90cd69ce24e83ba2c217907c277a" title=" (same for IFF)">transitivityRule</a>(subst, result);</div>
<div class="line"><a name="l00643"></a><span class="lineno"> 643</span>  }</div>
<div class="line"><a name="l00644"></a><span class="lineno"> 644</span> </div>
<div class="line"><a name="l00645"></a><span class="lineno"> 645</span>  <span class="keywordflow">switch</span>(result.getLHS().getKind()) {</div>
<div class="line"><a name="l00646"></a><span class="lineno"> 646</span>  <span class="keywordflow">case</span> <a class="code" href="kinds_8h.html#aa10c9e8951b8ccf714a59ec321bdac5ba865555c9f2e0458a7078486aa1b3254f">AND</a>:</div>
<div class="line"><a name="l00647"></a><span class="lineno"> 647</span>  result = <a class="code" href="group__SE.html#ga879b68112123e2b4ae7175d85a03bfec" title="Proof rules for the search engine.">d_rules</a>-><a class="code" href="group__SE__Rules.html#gab183ff7d1013729d0d3e2dbe28686e3c" title="AND(x1,...,xn) <=> v |- CNF[AND(x1,...,xn) <=> v].">andCNFRule</a>(result);</div>
<div class="line"><a name="l00648"></a><span class="lineno"> 648</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00649"></a><span class="lineno"> 649</span>  <span class="keywordflow">case</span> <a class="code" href="kinds_8h.html#aa10c9e8951b8ccf714a59ec321bdac5ba96727447c0ad447987df1c6415aef074">OR</a>:</div>
<div class="line"><a name="l00650"></a><span class="lineno"> 650</span>  result = <a class="code" href="group__SE.html#ga879b68112123e2b4ae7175d85a03bfec" title="Proof rules for the search engine.">d_rules</a>-><a class="code" href="group__SE__Rules.html#ga7086aa693d2a3421bc349eca8e9938ba" title="OR(x1,...,xn) <=> v |- CNF[OR(x1,...,xn) <=> v].">orCNFRule</a>(result);</div>
<div class="line"><a name="l00651"></a><span class="lineno"> 651</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00652"></a><span class="lineno"> 652</span>  <span class="keywordflow">case</span> <a class="code" href="kinds_8h.html#aa10c9e8951b8ccf714a59ec321bdac5ba527cb185631442655c4486d51522b5a7">IFF</a>:</div>
<div class="line"><a name="l00653"></a><span class="lineno"> 653</span>  result = <a class="code" href="group__SE.html#ga879b68112123e2b4ae7175d85a03bfec" title="Proof rules for the search engine.">d_rules</a>-><a class="code" href="group__SE__Rules.html#ga4ab7606744594db9050cb83fe6b73668" title="(x1 <=> x2) <=> v |- CNF[(x1 <=> x2) <=> v]">iffCNFRule</a>(result);</div>
<div class="line"><a name="l00654"></a><span class="lineno"> 654</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00655"></a><span class="lineno"> 655</span>  <span class="keywordflow">case</span> <a class="code" href="kinds_8h.html#aa10c9e8951b8ccf714a59ec321bdac5ba7338bb59b9aa936104a6d2f631d4d8db">IMPLIES</a>:</div>
<div class="line"><a name="l00656"></a><span class="lineno"> 656</span>  result = <a class="code" href="group__SE.html#ga879b68112123e2b4ae7175d85a03bfec" title="Proof rules for the search engine.">d_rules</a>-><a class="code" href="group__SE__Rules.html#ga25f7b95c8ebce2be117d03a1c93d715f" title="(x1 => x2) <=> v |- CNF[(x1 => x2) <=> v]">impCNFRule</a>(result);</div>
<div class="line"><a name="l00657"></a><span class="lineno"> 657</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00658"></a><span class="lineno"> 658</span>  <span class="keywordflow">case</span> <a class="code" href="kinds_8h.html#aa10c9e8951b8ccf714a59ec321bdac5ba3a4cfaf3eae8eac1dc2fd27d9f0994dc">ITE</a>:</div>
<div class="line"><a name="l00659"></a><span class="lineno"> 659</span>  result = <a class="code" href="group__SE.html#ga879b68112123e2b4ae7175d85a03bfec" title="Proof rules for the search engine.">d_rules</a>-><a class="code" href="group__SE__Rules.html#gae9263cbcedf5def99b3c49ee6978497a" title="ITE(c, x1, x2) <=> v |- CNF[ITE(c, x1, x2) <=> v].">iteCNFRule</a>(result);</div>
<div class="line"><a name="l00660"></a><span class="lineno"> 660</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00661"></a><span class="lineno"> 661</span>  <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00662"></a><span class="lineno"> 662</span>  <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(<span class="keyword">false</span>,</div>
<div class="line"><a name="l00663"></a><span class="lineno"> 663</span>  <span class="stringliteral">"SearchImplBase::applyCNFRules: "</span></div>
<div class="line"><a name="l00664"></a><span class="lineno"> 664</span>  <span class="stringliteral">"the input operator must be and|or|iff|imp|ite\n result = "</span> + </div>
<div class="line"><a name="l00665"></a><span class="lineno"> 665</span>  result.getLHS().toString());</div>
<div class="line"><a name="l00666"></a><span class="lineno"> 666</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00667"></a><span class="lineno"> 667</span>  }</div>
<div class="line"><a name="l00668"></a><span class="lineno"> 668</span> </div>
<div class="line"><a name="l00669"></a><span class="lineno"> 669</span>  <span class="comment">// FIXME: eliminate this once debugged</span></div>
<div class="line"><a name="l00670"></a><span class="lineno"> 670</span>  <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a> clauses(result);</div>
<div class="line"><a name="l00671"></a><span class="lineno"> 671</span> </div>
<div class="line"><a name="l00672"></a><span class="lineno"> 672</span>  <span class="comment">// Enqueue the clauses</span></div>
<div class="line"><a name="l00673"></a><span class="lineno"> 673</span>  <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(!clauses.<a class="code" href="classCVC3_1_1Theorem.html#afc6fdb0507eb3669e28d9be5ed0bd333">isNull</a>(), <span class="stringliteral">"Oops!.."</span>);</div>
<div class="line"><a name="l00674"></a><span class="lineno"> 674</span>  <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(clauses.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>().<a class="code" href="group__ExprPkg.html#ga383260cf4f8919728e2712e6e11f21fa">isAnd</a>(), <span class="stringliteral">"clauses = "</span></div>
<div class="line"><a name="l00675"></a><span class="lineno"> 675</span>  +clauses.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>().<a class="code" href="group__ExprPkg.html#gaf3028bb1619f8cc69b66ec712e1adb54" title="Print the expression to a string.">toString</a>());</div>
<div class="line"><a name="l00676"></a><span class="lineno"> 676</span> </div>
<div class="line"><a name="l00677"></a><span class="lineno"> 677</span>  <span class="comment">// The clauses may containt term ITEs, and we need to translate those</span></div>
<div class="line"><a name="l00678"></a><span class="lineno"> 678</span>  </div>
<div class="line"><a name="l00679"></a><span class="lineno"> 679</span>  <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i=0, iend=clauses.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>().<a class="code" href="group__ExprPkg.html#ga28b901d05e52a5c646f83a95cc74f94b">arity</a>(); i<iend; ++i) {</div>
<div class="line"><a name="l00680"></a><span class="lineno"> 680</span>  <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a> clause(<a class="code" href="group__SE.html#ga63f2a3cfcfa86820bea2f45cb890cc1c" title="Common proof rules.">d_commonRules</a>-><a class="code" href="classCVC3_1_1CommonProofRules.html#a3f3592ac74d0aa0caa3b9224ea7e61f4">andElim</a>(clauses,i));</div>
<div class="line"><a name="l00681"></a><span class="lineno"> 681</span>  <a class="code" href="group__SE.html#gadebc5b605b4a358789b697e44065a97e" title="Add a new fact to the search engine bypassing CNF converter.">addCNFFact</a>(clause);</div>
<div class="line"><a name="l00682"></a><span class="lineno"> 682</span>  }</div>
<div class="line"><a name="l00683"></a><span class="lineno"> 683</span>  <a class="code" href="debug_8h.html#ad64155edafde9f067f4868817cd04bdf">TRACE_MSG</a>(<span class="stringliteral">"mycnf"</span>,<span class="stringliteral">"applyCNFRules => }"</span>);</div>
<div class="line"><a name="l00684"></a><span class="lineno"> 684</span> }</div>
<div class="line"><a name="l00685"></a><span class="lineno"> 685</span> </div>
<div class="line"><a name="l00686"></a><span class="lineno"> 686</span> </div>
<div class="line"><a name="l00687"></a><span class="lineno"><a class="code" href="group__SE.html#ga9babda9b0bcd226dd4d0a736cd433893"> 687</a></span> <span class="keywordtype">bool</span> <a class="code" href="group__SE.html#ga9babda9b0bcd226dd4d0a736cd433893" title="Check if e is a clause (a literal, or a disjunction of literals)">SearchImplBase::isClause</a>(<span class="keyword">const</span> <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a>& e) {</div>
<div class="line"><a name="l00688"></a><span class="lineno"> 688</span>  <span class="keywordflow">if</span>(e.<a class="code" href="group__ExprPkg.html#gaac535dae48f02fcd093a5b1b1a062211" title="Test if e is an abstract literal.">isAbsLiteral</a>()) <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00689"></a><span class="lineno"> 689</span>  <span class="keywordflow">if</span>(!e.<a class="code" href="group__ExprPkg.html#ga36f1eff876808586db368dc1b6da5f56">isOr</a>()) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00690"></a><span class="lineno"> 690</span> </div>
<div class="line"><a name="l00691"></a><span class="lineno"> 691</span>  <span class="keywordtype">bool</span> cnf(<span class="keyword">true</span>);</div>
<div class="line"><a name="l00692"></a><span class="lineno"> 692</span>  <span class="keywordflow">for</span>(<a class="code" href="classCVC3_1_1Expr_1_1iterator.html">Expr::iterator</a> i=e.<a class="code" href="group__ExprPkg.html#gac890e13db184610276fc533fa4b4fe99" title="Begin iterator.">begin</a>(), iend=e.<a class="code" href="group__ExprPkg.html#gaf6048a5030c8fa2511bf5dfee868e653" title="End iterator.">end</a>(); i!=iend && cnf; ++i)</div>
<div class="line"><a name="l00693"></a><span class="lineno"> 693</span>  cnf = (*i).isAbsLiteral();</div>
<div class="line"><a name="l00694"></a><span class="lineno"> 694</span>  <span class="keywordflow">return</span> cnf;</div>
<div class="line"><a name="l00695"></a><span class="lineno"> 695</span> }</div>
<div class="line"><a name="l00696"></a><span class="lineno"> 696</span> </div>
<div class="line"><a name="l00697"></a><span class="lineno"> 697</span> </div>
<div class="line"><a name="l00698"></a><span class="lineno"> 698</span> <span class="keywordtype">bool</span></div>
<div class="line"><a name="l00699"></a><span class="lineno"><a class="code" href="group__SE.html#ga9db77121699fbbdbff209014b8ab26c3"> 699</a></span> <a class="code" href="group__SE.html#ga9db77121699fbbdbff209014b8ab26c3" title="Check if e is a propositional clause.">SearchImplBase::isPropClause</a>(<span class="keyword">const</span> <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a>& e) {</div>
<div class="line"><a name="l00700"></a><span class="lineno"> 700</span>  <span class="keywordflow">if</span>(e.<a class="code" href="group__ExprPkg.html#gaccf96ea73570e38c5c7e4ad39ed8b509" title="PropAtom or negation of PropAtom.">isPropLiteral</a>()) <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00701"></a><span class="lineno"> 701</span>  <span class="keywordflow">if</span>(!e.<a class="code" href="group__ExprPkg.html#ga36f1eff876808586db368dc1b6da5f56">isOr</a>()) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00702"></a><span class="lineno"> 702</span> </div>
<div class="line"><a name="l00703"></a><span class="lineno"> 703</span>  <span class="keywordtype">bool</span> cnf(<span class="keyword">true</span>);</div>
<div class="line"><a name="l00704"></a><span class="lineno"> 704</span>  <span class="keywordflow">for</span>(<a class="code" href="classCVC3_1_1Expr_1_1iterator.html">Expr::iterator</a> i=e.<a class="code" href="group__ExprPkg.html#gac890e13db184610276fc533fa4b4fe99" title="Begin iterator.">begin</a>(), iend=e.<a class="code" href="group__ExprPkg.html#gaf6048a5030c8fa2511bf5dfee868e653" title="End iterator.">end</a>(); i!=iend && cnf; ++i)</div>
<div class="line"><a name="l00705"></a><span class="lineno"> 705</span>  cnf = (*i).isPropLiteral();</div>
<div class="line"><a name="l00706"></a><span class="lineno"> 706</span>  <span class="keywordflow">return</span> cnf;</div>
<div class="line"><a name="l00707"></a><span class="lineno"> 707</span> }</div>
<div class="line"><a name="l00708"></a><span class="lineno"> 708</span> </div>
<div class="line"><a name="l00709"></a><span class="lineno"> 709</span> </div>
<div class="line"><a name="l00710"></a><span class="lineno"> 710</span> <span class="keywordtype">bool</span></div>
<div class="line"><a name="l00711"></a><span class="lineno"><a class="code" href="group__SE.html#gaed4079f44a18e496b87366ce65b20d99"> 711</a></span> <a class="code" href="group__SE.html#gaed4079f44a18e496b87366ce65b20d99" title="Check if a splitter is required for completeness.">SearchImplBase::isGoodSplitter</a>(<span class="keyword">const</span> <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a>& e) {</div>
<div class="line"><a name="l00712"></a><span class="lineno"> 712</span>  <span class="keywordflow">if</span>(!*<a class="code" href="group__SE.html#gafc2c782e4f24b55c8af7cb0189d281d8" title="Flag: ignore auxiliary CNF variables when searching for a splitter.">d_ignoreCnfVarsOption</a>) <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00713"></a><span class="lineno"> 713</span>  <a class="code" href="kinds_8h.html#aa10c9e8951b8ccf714a59ec321bdac5ba7fa27e82c6c4f69434225ed81e5d151e">TRACE</a>(<span class="stringliteral">"isGoodSplitter"</span>, <span class="stringliteral">"isGoodSplitter("</span>, e, <span class="stringliteral">") {"</span>);</div>
<div class="line"><a name="l00714"></a><span class="lineno"> 714</span>  <span class="comment">// Check for var being an auxiliary CNF variable</span></div>
<div class="line"><a name="l00715"></a><span class="lineno"> 715</span>  <span class="keyword">const</span> <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a>& var = e.<a class="code" href="group__ExprPkg.html#ga1a898858ccadce833df5a294c7740f11">isNot</a>()? e[0] : e;</div>
<div class="line"><a name="l00716"></a><span class="lineno"> 716</span>  <span class="keywordtype">bool</span> res(!<a class="code" href="group__SE.html#ga92018736294ba073bc5db887467944ad" title="Check whether e is a fresh variable introduced by the CNF converter.">isCNFVar</a>(var));</div>
<div class="line"><a name="l00717"></a><span class="lineno"> 717</span>  <a class="code" href="kinds_8h.html#aa10c9e8951b8ccf714a59ec321bdac5ba7fa27e82c6c4f69434225ed81e5d151e">TRACE</a>(<span class="stringliteral">"isGoodSplitter"</span>, <span class="stringliteral">"isGoodSplitter => "</span>, res? <span class="stringliteral">"true"</span> : <span class="stringliteral">"false"</span>, <span class="stringliteral">" }"</span>);</div>
<div class="line"><a name="l00718"></a><span class="lineno"> 718</span>  <span class="keywordflow">return</span> res;</div>
<div class="line"><a name="l00719"></a><span class="lineno"> 719</span> }</div>
<div class="line"><a name="l00720"></a><span class="lineno"> 720</span> </div>
<div class="line"><a name="l00721"></a><span class="lineno"> 721</span> </div>
<div class="line"><a name="l00722"></a><span class="lineno"> 722</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00723"></a><span class="lineno"><a class="code" href="group__SE.html#gaa78fb38536d0a2e34ad140f3ec865f2b"> 723</a></span> <a class="code" href="group__SE.html#gaa78fb38536d0a2e34ad140f3ec865f2b" title="Cache a theorem phi <=> v by phi, where v is a literal.">SearchImplBase::addToCNFCache</a>(<span class="keyword">const</span> <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a>& thm) {</div>
<div class="line"><a name="l00724"></a><span class="lineno"> 724</span>  <a class="code" href="kinds_8h.html#aa10c9e8951b8ccf714a59ec321bdac5ba7fa27e82c6c4f69434225ed81e5d151e">TRACE</a>(<span class="stringliteral">"mycnf"</span>, <span class="stringliteral">"addToCNFCache("</span>, thm.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>(), <span class="stringliteral">")"</span>);</div>
<div class="line"><a name="l00725"></a><span class="lineno"> 725</span> </div>
<div class="line"><a name="l00726"></a><span class="lineno"> 726</span>  <a class="code" href="group__SE.html#ga3772c6af7eac91b9ed7fc278edf5ef90" title="Access to theory reasoning.">d_core</a>-><a class="code" href="classCVC3_1_1TheoryCore.html#a7f119c4fa5313b72feca7dd441e045f0">getStatistics</a>().<a class="code" href="classCVC3_1_1Statistics.html#a9b2503d33c8c41b768f40b1a43c2d3bf">counter</a>(<span class="stringliteral">"CNF New Vars"</span>)++;</div>
<div class="line"><a name="l00727"></a><span class="lineno"> 727</span> </div>
<div class="line"><a name="l00728"></a><span class="lineno"> 728</span>  <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a> result = thm;</div>
<div class="line"><a name="l00729"></a><span class="lineno"> 729</span>  <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(result.<a class="code" href="classCVC3_1_1Theorem.html#a362c1d70e03803d804bbe300e5f6dc87">isRewrite</a>(),</div>
<div class="line"><a name="l00730"></a><span class="lineno"> 730</span>  <span class="stringliteral">"SearchImplBase::addToCNFCache: input must be an iff: "</span> + </div>
<div class="line"><a name="l00731"></a><span class="lineno"> 731</span>  result.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>().<a class="code" href="group__ExprPkg.html#gaf3028bb1619f8cc69b66ec712e1adb54" title="Print the expression to a string.">toString</a>());</div>
<div class="line"><a name="l00732"></a><span class="lineno"> 732</span>  <span class="comment">// Record the CNF variable</span></div>
<div class="line"><a name="l00733"></a><span class="lineno"> 733</span>  <a class="code" href="group__SE.html#ga1c64a37d94b4cadedce29f3e4b98a3af" title="Backtracking set of new variables generated by CNF translator.">d_cnfVars</a>[thm.<a class="code" href="classCVC3_1_1Theorem.html#a97d957fcbf9094480851b1d2e5d3729f">getRHS</a>()] = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00734"></a><span class="lineno"> 734</span> </div>
<div class="line"><a name="l00735"></a><span class="lineno"> 735</span>  <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a> t(thm);</div>
<div class="line"><a name="l00736"></a><span class="lineno"> 736</span>  <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a> phi = thm.<a class="code" href="classCVC3_1_1Theorem.html#a206c04f39fbbcacef2337148675553f4">getLHS</a>();</div>
<div class="line"><a name="l00737"></a><span class="lineno"> 737</span>  <span class="keywordflow">while</span>(phi.<a class="code" href="group__ExprPkg.html#ga1a898858ccadce833df5a294c7740f11">isNot</a>()) {</div>
<div class="line"><a name="l00738"></a><span class="lineno"> 738</span>  t = <a class="code" href="group__SE.html#ga63f2a3cfcfa86820bea2f45cb890cc1c" title="Common proof rules.">d_commonRules</a>-><a class="code" href="classCVC3_1_1CommonProofRules.html#af38f25446a561384c3de66392c4d3544" title="e1 <=> e2 ==> ~e1 <=> ~e2">iffContrapositive</a>(thm);</div>
<div class="line"><a name="l00739"></a><span class="lineno"> 739</span>  phi = phi[0];</div>
<div class="line"><a name="l00740"></a><span class="lineno"> 740</span>  }</div>
<div class="line"><a name="l00741"></a><span class="lineno"> 741</span>  <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(<a class="code" href="group__SE.html#gab60a7d204ed01875c98629e874575cd6" title="Backtracking cache for the CNF generator.">d_cnfCache</a>.<a class="code" href="classCVC3_1_1CDMap.html#af5f700035db0db798c645e36dd0b31bd">count</a>(phi) == 0, </div>
<div class="line"><a name="l00742"></a><span class="lineno"> 742</span>  <span class="stringliteral">"thm = "</span>+thm.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>().<a class="code" href="group__ExprPkg.html#gaf3028bb1619f8cc69b66ec712e1adb54" title="Print the expression to a string.">toString</a>() + </div>
<div class="line"><a name="l00743"></a><span class="lineno"> 743</span>  <span class="stringliteral">"\n t = "</span>+ t.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>().<a class="code" href="group__ExprPkg.html#gaf3028bb1619f8cc69b66ec712e1adb54" title="Print the expression to a string.">toString</a>());</div>
<div class="line"><a name="l00744"></a><span class="lineno"> 744</span>  <span class="comment">//d_cnfCache.insert(phi, t);</span></div>
<div class="line"><a name="l00745"></a><span class="lineno"> 745</span>  <a class="code" href="group__SE.html#gab60a7d204ed01875c98629e874575cd6" title="Backtracking cache for the CNF generator.">d_cnfCache</a>.<a class="code" href="classCVC3_1_1CDMap.html#a664a15046de83b0af599f488cb420022">insert</a>(phi, t, <a class="code" href="group__SE.html#ga640e08e2b051e08f2abdd4111b9a2e71" title="The bottom-most scope for the current call to checkSAT (where conflict clauses are still valid)...">d_bottomScope</a>);</div>
<div class="line"><a name="l00746"></a><span class="lineno"> 746</span> }</div>
<div class="line"><a name="l00747"></a><span class="lineno"> 747</span> </div>
<div class="line"><a name="l00748"></a><span class="lineno"> 748</span> </div>
<div class="line"><a name="l00749"></a><span class="lineno"> 749</span> <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a> </div>
<div class="line"><a name="l00750"></a><span class="lineno"><a class="code" href="group__SE.html#ga298ad740ab490d5b3337445573b8c4d7"> 750</a></span> <a class="code" href="group__SE.html#ga298ad740ab490d5b3337445573b8c4d7" title="Find a theorem phi <=> v by phi, where v is a literal.">SearchImplBase::findInCNFCache</a>(<span class="keyword">const</span> <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a>& e) { </div>
<div class="line"><a name="l00751"></a><span class="lineno"> 751</span>  <a class="code" href="kinds_8h.html#aa10c9e8951b8ccf714a59ec321bdac5ba7fa27e82c6c4f69434225ed81e5d151e">TRACE</a>(<span class="stringliteral">"mycnf"</span>, <span class="stringliteral">"findInCNFCache("</span>, e, <span class="stringliteral">") { "</span>);</div>
<div class="line"><a name="l00752"></a><span class="lineno"> 752</span>  <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a> phi(e);</div>
<div class="line"><a name="l00753"></a><span class="lineno"> 753</span> </div>
<div class="line"><a name="l00754"></a><span class="lineno"> 754</span>  <span class="keywordtype">int</span> numNegs(0);</div>
<div class="line"><a name="l00755"></a><span class="lineno"> 755</span>  <span class="comment">// Strip all the top-level negations from e</span></div>
<div class="line"><a name="l00756"></a><span class="lineno"> 756</span>  <span class="keywordflow">while</span>(phi.<a class="code" href="group__ExprPkg.html#ga1a898858ccadce833df5a294c7740f11">isNot</a>()) {</div>
<div class="line"><a name="l00757"></a><span class="lineno"> 757</span>  phi = phi[0]; numNegs++;</div>
<div class="line"><a name="l00758"></a><span class="lineno"> 758</span>  }</div>
<div class="line"><a name="l00759"></a><span class="lineno"> 759</span>  <a class="code" href="classCVC3_1_1CDMap.html">CDMap<Expr,Theorem>::iterator</a> it = <a class="code" href="group__SE.html#gab60a7d204ed01875c98629e874575cd6" title="Backtracking cache for the CNF generator.">d_cnfCache</a>.<a class="code" href="classCVC3_1_1CDMap.html#a1cadecbd2d6fa614a2f2e9419aa43f33">find</a>(phi);</div>
<div class="line"><a name="l00760"></a><span class="lineno"> 760</span>  <span class="keywordflow">if</span>(it != <a class="code" href="group__SE.html#gab60a7d204ed01875c98629e874575cd6" title="Backtracking cache for the CNF generator.">d_cnfCache</a>.<a class="code" href="classCVC3_1_1CDMap.html#a2a26c7cc4db12cb17d273db5cfa5a890">end</a>()) {</div>
<div class="line"><a name="l00761"></a><span class="lineno"> 761</span>  <span class="comment">// IF_DEBUG(debugger.counter("CNF cache hits")++;)</span></div>
<div class="line"><a name="l00762"></a><span class="lineno"> 762</span>  <a class="code" href="group__SE.html#ga3772c6af7eac91b9ed7fc278edf5ef90" title="Access to theory reasoning.">d_core</a>-><a class="code" href="classCVC3_1_1TheoryCore.html#a7f119c4fa5313b72feca7dd441e045f0">getStatistics</a>().<a class="code" href="classCVC3_1_1Statistics.html#a9b2503d33c8c41b768f40b1a43c2d3bf">counter</a>(<span class="stringliteral">"CNF cache hits"</span>)++;</div>
<div class="line"><a name="l00763"></a><span class="lineno"> 763</span>  <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a> thm = (*it).second;</div>
<div class="line"><a name="l00764"></a><span class="lineno"> 764</span>  </div>
<div class="line"><a name="l00765"></a><span class="lineno"> 765</span>  <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(thm.<a class="code" href="classCVC3_1_1Theorem.html#a362c1d70e03803d804bbe300e5f6dc87">isRewrite</a>() && thm.<a class="code" href="classCVC3_1_1Theorem.html#a206c04f39fbbcacef2337148675553f4">getLHS</a>() == phi,</div>
<div class="line"><a name="l00766"></a><span class="lineno"> 766</span>  <span class="stringliteral">"SearchImplBase::findInCNFCache: thm must be an iff: "</span> + </div>
<div class="line"><a name="l00767"></a><span class="lineno"> 767</span>  thm.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>().<a class="code" href="group__ExprPkg.html#gaf3028bb1619f8cc69b66ec712e1adb54" title="Print the expression to a string.">toString</a>());</div>
<div class="line"><a name="l00768"></a><span class="lineno"> 768</span>  </div>
<div class="line"><a name="l00769"></a><span class="lineno"> 769</span>  <span class="comment">// Now put all the negations back. If the number of negations is</span></div>
<div class="line"><a name="l00770"></a><span class="lineno"> 770</span>  <span class="comment">// odd, first transform phi<=>v into !phi<=>!v. Then apply</span></div>
<div class="line"><a name="l00771"></a><span class="lineno"> 771</span>  <span class="comment">// !!phi<=>phi rewrite as many times as needed.</span></div>
<div class="line"><a name="l00772"></a><span class="lineno"> 772</span>  <span class="keywordflow">if</span>(numNegs % 2 != 0) {</div>
<div class="line"><a name="l00773"></a><span class="lineno"> 773</span>  thm = <a class="code" href="group__SE.html#ga63f2a3cfcfa86820bea2f45cb890cc1c" title="Common proof rules.">d_commonRules</a>-><a class="code" href="classCVC3_1_1CommonProofRules.html#af38f25446a561384c3de66392c4d3544" title="e1 <=> e2 ==> ~e1 <=> ~e2">iffContrapositive</a>(thm); </div>
<div class="line"><a name="l00774"></a><span class="lineno"> 774</span>  numNegs--;</div>
<div class="line"><a name="l00775"></a><span class="lineno"> 775</span>  }</div>
<div class="line"><a name="l00776"></a><span class="lineno"> 776</span>  <span class="keywordflow">for</span>(; numNegs > 0; numNegs-=2) {</div>
<div class="line"><a name="l00777"></a><span class="lineno"> 777</span>  <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a> t = <a class="code" href="group__SE.html#ga63f2a3cfcfa86820bea2f45cb890cc1c" title="Common proof rules.">d_commonRules</a>-><a class="code" href="classCVC3_1_1CommonProofRules.html#a8a04ff29591a019d4d4cf073c0987316" title="==> NOT NOT e IFF e, takes !!e">rewriteNotNot</a>(!!(thm.<a class="code" href="classCVC3_1_1Theorem.html#a206c04f39fbbcacef2337148675553f4">getLHS</a>()));</div>
<div class="line"><a name="l00778"></a><span class="lineno"> 778</span>  thm = <a class="code" href="group__SE.html#ga63f2a3cfcfa86820bea2f45cb890cc1c" title="Common proof rules.">d_commonRules</a>-><a class="code" href="classCVC3_1_1CommonProofRules.html#a4a4e90cd69ce24e83ba2c217907c277a" title=" (same for IFF)">transitivityRule</a>(t,thm);</div>
<div class="line"><a name="l00779"></a><span class="lineno"> 779</span>  }</div>
<div class="line"><a name="l00780"></a><span class="lineno"> 780</span> </div>
<div class="line"><a name="l00781"></a><span class="lineno"> 781</span>  <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(numNegs == 0, <span class="stringliteral">"numNegs = "</span>+<a class="code" href="namespaceCVC3.html#af69618103f1f0f2eadada0796a2a940c">int2string</a>(numNegs));</div>
<div class="line"><a name="l00782"></a><span class="lineno"> 782</span>  <a class="code" href="kinds_8h.html#aa10c9e8951b8ccf714a59ec321bdac5ba7fa27e82c6c4f69434225ed81e5d151e">TRACE</a>(<span class="stringliteral">"mycnf"</span>, <span class="stringliteral">"findInCNFCache => "</span>, thm.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>(), <span class="stringliteral">" }"</span>);</div>
<div class="line"><a name="l00783"></a><span class="lineno"> 783</span>  <span class="keywordflow">return</span> thm;</div>
<div class="line"><a name="l00784"></a><span class="lineno"> 784</span>  }</div>
<div class="line"><a name="l00785"></a><span class="lineno"> 785</span>  <a class="code" href="debug_8h.html#ad64155edafde9f067f4868817cd04bdf">TRACE_MSG</a>(<span class="stringliteral">"mycnf"</span>, <span class="stringliteral">"findInCNFCache => null }"</span>);</div>
<div class="line"><a name="l00786"></a><span class="lineno"> 786</span>  <span class="keywordflow">return</span> <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a>();</div>
<div class="line"><a name="l00787"></a><span class="lineno"> 787</span> }</div>
<div class="line"><a name="l00788"></a><span class="lineno"> 788</span> <span class="comment"></span></div>
<div class="line"><a name="l00789"></a><span class="lineno"> 789</span> <span class="comment">/*!</span></div>
<div class="line"><a name="l00790"></a><span class="lineno"> 790</span> <span class="comment"> * Strategy:</span></div>
<div class="line"><a name="l00791"></a><span class="lineno"> 791</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00792"></a><span class="lineno"> 792</span> <span class="comment"> * For a given atomic formula phi(ite(c, t1, t2)) which depends on a</span></div>
<div class="line"><a name="l00793"></a><span class="lineno"> 793</span> <span class="comment"> * term ITE, generate an equisatisfiable formula:</span></div>
<div class="line"><a name="l00794"></a><span class="lineno"> 794</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00795"></a><span class="lineno"> 795</span> <span class="comment"> * phi(x) & ite(c, t1=x, t2=x),</span></div>
<div class="line"><a name="l00796"></a><span class="lineno"> 796</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00797"></a><span class="lineno"> 797</span> <span class="comment"> * where x is a new variable.</span></div>
<div class="line"><a name="l00798"></a><span class="lineno"> 798</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00799"></a><span class="lineno"> 799</span> <span class="comment"> * The phi(x) part will be generated by the caller, and our job is to</span></div>
<div class="line"><a name="l00800"></a><span class="lineno"> 800</span> <span class="comment"> * assert the 'ite(c, t1=x, t2=x)', and return a rewrite theorem</span></div>
<div class="line"><a name="l00801"></a><span class="lineno"> 801</span> <span class="comment"> * phi(ite(c, t1, t2)) <=> phi(x).</span></div>
<div class="line"><a name="l00802"></a><span class="lineno"> 802</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00803"></a><span class="lineno"> 803</span> <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a></div>
<div class="line"><a name="l00804"></a><span class="lineno"><a class="code" href="group__SE.html#ga687e32d21d7fe7e4b26873ae86a47ae5"> 804</a></span> <a class="code" href="group__SE.html#ga687e32d21d7fe7e4b26873ae86a47ae5" title="Replaces ITE subexpressions in e with variables.">SearchImplBase::replaceITE</a>(<span class="keyword">const</span> <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a>& e) {</div>
<div class="line"><a name="l00805"></a><span class="lineno"> 805</span>  <a class="code" href="kinds_8h.html#aa10c9e8951b8ccf714a59ec321bdac5ba7fa27e82c6c4f69434225ed81e5d151e">TRACE</a>(<span class="stringliteral">"replaceITE"</span>,<span class="stringliteral">"replaceITE("</span>, e, <span class="stringliteral">") { "</span>);</div>
<div class="line"><a name="l00806"></a><span class="lineno"> 806</span>  <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a> res;</div>
<div class="line"><a name="l00807"></a><span class="lineno"> 807</span> </div>
<div class="line"><a name="l00808"></a><span class="lineno"> 808</span>  <a class="code" href="classCVC3_1_1CDMap.html">CDMap<Expr,Theorem>::iterator</a> i=<a class="code" href="group__SE.html#ga0c829909b9e3ab2b59ba40e681905c4b" title="Cache for replaceITE()">d_replaceITECache</a>.<a class="code" href="classCVC3_1_1CDMap.html#a1cadecbd2d6fa614a2f2e9419aa43f33">find</a>(e),</div>
<div class="line"><a name="l00809"></a><span class="lineno"> 809</span>  iend=<a class="code" href="group__SE.html#ga0c829909b9e3ab2b59ba40e681905c4b" title="Cache for replaceITE()">d_replaceITECache</a>.<a class="code" href="classCVC3_1_1CDMap.html#a2a26c7cc4db12cb17d273db5cfa5a890">end</a>();</div>
<div class="line"><a name="l00810"></a><span class="lineno"> 810</span>  <span class="keywordflow">if</span>(i!=iend) {</div>
<div class="line"><a name="l00811"></a><span class="lineno"> 811</span>  <a class="code" href="kinds_8h.html#aa10c9e8951b8ccf714a59ec321bdac5ba7fa27e82c6c4f69434225ed81e5d151e">TRACE</a>(<span class="stringliteral">"replaceITE"</span>, <span class="stringliteral">"replaceITE[cached] => "</span>, (*i).second, <span class="stringliteral">" }"</span>);</div>
<div class="line"><a name="l00812"></a><span class="lineno"> 812</span>  <span class="keywordflow">return</span> (*i).second;</div>
<div class="line"><a name="l00813"></a><span class="lineno"> 813</span>  }</div>
<div class="line"><a name="l00814"></a><span class="lineno"> 814</span>  </div>
<div class="line"><a name="l00815"></a><span class="lineno"> 815</span>  <span class="keywordflow">if</span>(e.<a class="code" href="group__ExprPkg.html#gaac535dae48f02fcd093a5b1b1a062211" title="Test if e is an abstract literal.">isAbsLiteral</a>())</div>
<div class="line"><a name="l00816"></a><span class="lineno"> 816</span>  res = <a class="code" href="group__SE.html#ga3772c6af7eac91b9ed7fc278edf5ef90" title="Access to theory reasoning.">d_core</a>-><a class="code" href="classCVC3_1_1TheoryCore.html#a586e77e855946fd0b5f541ec06f7decd" title="Called by search engine.">rewriteLiteral</a>(e);</div>
<div class="line"><a name="l00817"></a><span class="lineno"> 817</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00818"></a><span class="lineno"> 818</span>  res = <a class="code" href="group__SE.html#ga63f2a3cfcfa86820bea2f45cb890cc1c" title="Common proof rules.">d_commonRules</a>-><a class="code" href="classCVC3_1_1CommonProofRules.html#a61c1fe56b4ed9744006883a7784ddb71">reflexivityRule</a>(e);</div>
<div class="line"><a name="l00819"></a><span class="lineno"> 819</span> </div>
<div class="line"><a name="l00820"></a><span class="lineno"> 820</span> </div>
<div class="line"><a name="l00821"></a><span class="lineno"> 821</span>  <span class="comment">// If 'res' is e<=>phi, and the resulting formula phi is not a</span></div>
<div class="line"><a name="l00822"></a><span class="lineno"> 822</span>  <span class="comment">// literal, introduce a new variable x, enqueue phi<=>x, and return</span></div>
<div class="line"><a name="l00823"></a><span class="lineno"> 823</span>  <span class="comment">// e<=>x.</span></div>
<div class="line"><a name="l00824"></a><span class="lineno"> 824</span>  <span class="keywordflow">if</span>(!res.<a class="code" href="classCVC3_1_1Theorem.html#a97d957fcbf9094480851b1d2e5d3729f">getRHS</a>().<a class="code" href="group__ExprPkg.html#gaccf96ea73570e38c5c7e4ad39ed8b509" title="PropAtom or negation of PropAtom.">isPropLiteral</a>()) {</div>
<div class="line"><a name="l00825"></a><span class="lineno"> 825</span>  <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a> varThm(<a class="code" href="group__SE.html#ga298ad740ab490d5b3337445573b8c4d7" title="Find a theorem phi <=> v by phi, where v is a literal.">findInCNFCache</a>(res.<a class="code" href="classCVC3_1_1Theorem.html#a97d957fcbf9094480851b1d2e5d3729f">getRHS</a>()));</div>
<div class="line"><a name="l00826"></a><span class="lineno"> 826</span>  <span class="keywordflow">if</span>(varThm.<a class="code" href="classCVC3_1_1Theorem.html#afc6fdb0507eb3669e28d9be5ed0bd333">isNull</a>()) {</div>
<div class="line"><a name="l00827"></a><span class="lineno"> 827</span>  varThm = <a class="code" href="group__SE.html#ga63f2a3cfcfa86820bea2f45cb890cc1c" title="Common proof rules.">d_commonRules</a>-><a class="code" href="classCVC3_1_1CommonProofRules.html#a10fa187373ec24079c10874d8e804ecb" title="Retrun a theorem "|- e = v" for a new Skolem constant v.">varIntroSkolem</a>(res.<a class="code" href="classCVC3_1_1Theorem.html#a97d957fcbf9094480851b1d2e5d3729f">getRHS</a>());</div>
<div class="line"><a name="l00828"></a><span class="lineno"> 828</span>  <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a> var;</div>
<div class="line"><a name="l00829"></a><span class="lineno"> 829</span>  <span class="keywordflow">if</span>(res.<a class="code" href="classCVC3_1_1Theorem.html#a362c1d70e03803d804bbe300e5f6dc87">isRewrite</a>())</div>
<div class="line"><a name="l00830"></a><span class="lineno"> 830</span>  var = <a class="code" href="group__SE.html#ga63f2a3cfcfa86820bea2f45cb890cc1c" title="Common proof rules.">d_commonRules</a>-><a class="code" href="classCVC3_1_1CommonProofRules.html#a4a4e90cd69ce24e83ba2c217907c277a" title=" (same for IFF)">transitivityRule</a>(res,varThm);</div>
<div class="line"><a name="l00831"></a><span class="lineno"> 831</span>  <span class="keywordflow">else</span> </div>
<div class="line"><a name="l00832"></a><span class="lineno"> 832</span>  var = <a class="code" href="group__SE.html#ga63f2a3cfcfa86820bea2f45cb890cc1c" title="Common proof rules.">d_commonRules</a>-><a class="code" href="classCVC3_1_1CommonProofRules.html#aebbcd4a194e4fdca0bcd16143fb03a75">iffMP</a>(res,varThm);</div>
<div class="line"><a name="l00833"></a><span class="lineno"> 833</span>  <span class="comment">//d_cnfVars[var.getExpr()] = true;</span></div>
<div class="line"><a name="l00834"></a><span class="lineno"> 834</span>  <span class="comment">//addCNFFact(var);</span></div>
<div class="line"><a name="l00835"></a><span class="lineno"> 835</span>  <a class="code" href="group__SE.html#gaa78fb38536d0a2e34ad140f3ec865f2b" title="Cache a theorem phi <=> v by phi, where v is a literal.">addToCNFCache</a>(varThm);</div>
<div class="line"><a name="l00836"></a><span class="lineno"> 836</span>  }</div>
<div class="line"><a name="l00837"></a><span class="lineno"> 837</span>  <a class="code" href="group__SE.html#gaa7bf3c385bae481d4ea35179e818a09a" title="FIXME: write a comment.">applyCNFRules</a>(varThm);</div>
<div class="line"><a name="l00838"></a><span class="lineno"> 838</span>  <span class="comment">//enqueueCNFrec(varThm);</span></div>
<div class="line"><a name="l00839"></a><span class="lineno"> 839</span>  res = <a class="code" href="group__SE.html#ga63f2a3cfcfa86820bea2f45cb890cc1c" title="Common proof rules.">d_commonRules</a>-><a class="code" href="classCVC3_1_1CommonProofRules.html#a4a4e90cd69ce24e83ba2c217907c277a" title=" (same for IFF)">transitivityRule</a>(res, varThm);</div>
<div class="line"><a name="l00840"></a><span class="lineno"> 840</span>  }</div>
<div class="line"><a name="l00841"></a><span class="lineno"> 841</span>  </div>
<div class="line"><a name="l00842"></a><span class="lineno"> 842</span>  <a class="code" href="group__SE.html#ga0c829909b9e3ab2b59ba40e681905c4b" title="Cache for replaceITE()">d_replaceITECache</a>[e] = res;</div>
<div class="line"><a name="l00843"></a><span class="lineno"> 843</span>  </div>
<div class="line"><a name="l00844"></a><span class="lineno"> 844</span>  <a class="code" href="kinds_8h.html#aa10c9e8951b8ccf714a59ec321bdac5ba7fa27e82c6c4f69434225ed81e5d151e">TRACE</a>(<span class="stringliteral">"replaceITE"</span>, <span class="stringliteral">"replaceITE => "</span>, res, <span class="stringliteral">" }"</span>);</div>
<div class="line"><a name="l00845"></a><span class="lineno"> 845</span>  <span class="keywordflow">return</span> res;</div>
<div class="line"><a name="l00846"></a><span class="lineno"> 846</span> }</div>
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