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<div class="title">minisat_derivation.cpp</div> </div>
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<a href="minisat__derivation_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 minisat_derivation.cpp</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> *\brief MiniSat proof logging</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * Author: Alexander Fuchs</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * Created: Sun Dec 07 11:09:00 2007</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> * <hr></span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * License to use, copy, modify, sell and/or distribute this software</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * and its documentation for any purpose is hereby granted without</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * royalty, subject to the terms and conditions defined in the \ref</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * LICENSE file provided with this distribution.</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * </span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * <hr></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="minisat__derivation_8h.html" title="MiniSat proof logging.">minisat_derivation.h</a>"</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include "<a class="code" href="minisat__solver_8h.html" title="Adaptation of MiniSat to DPLL(T)">minisat_solver.h</a>"</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include "<a class="code" href="sat__proof_8h.html" title="Sat solver proof representation.">sat_proof.h</a>"</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include <set></span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#include <iostream></span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> </div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="keyword">using namespace </span>MiniSat;</div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="keyword">using namespace </span>std;</div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> </div>
<div class="line"><a name="l00031"></a><span class="lineno"><a class="code" href="classMiniSat_1_1Inference.html#aacd9c375bc7b8b0d87a15bcd9b5d35ce"> 31</a></span> std::string <a class="code" href="classMiniSat_1_1Inference.html#aacd9c375bc7b8b0d87a15bcd9b5d35ce">Inference::toString</a>()<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  ostringstream buffer;</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  buffer << getStart();</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  <span class="keywordflow">for</span> (Inference::TSteps::const_iterator step = d_steps.begin(); step != d_steps.end(); ++step) {</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  buffer << <span class="stringliteral">" "</span> << step->first.toString() << <span class="stringliteral">" "</span> << step->second;</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="keywordflow">return</span> buffer.str();</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"> 40</span> </div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> </div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> </div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> </div>
<div class="line"><a name="l00044"></a><span class="lineno"><a class="code" href="classMiniSat_1_1Derivation.html#a72d5632fb889b903e8f88891943e5562"> 44</a></span> <a class="code" href="classMiniSat_1_1Derivation.html#a72d5632fb889b903e8f88891943e5562">Derivation::~Derivation</a>() {</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="comment">// deallocate generated unit clauses</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keywordflow">for</span> (<a class="code" href="classHash_1_1hash__map.html#a0fae180472ddfd8822c881caf23c11a9">TClauses::iterator</a> i = d_unitClauses.begin(); i != d_unitClauses.end(); ++i) {</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <a class="code" href="namespaceMiniSat.html#a4e5f70e98cdfee0fd9b018a267f09e4a">xfree</a>(i->second);</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  }</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  </div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="comment">// deallocate removed clauses</span></div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keywordflow">for</span> (std::deque<Clause*>::iterator i = d_removedClauses.begin(); i != d_removedClauses.end(); ++i) {</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <a class="code" href="namespaceMiniSat.html#a4e5f70e98cdfee0fd9b018a267f09e4a">xfree</a>(*i);</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  }</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  </div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="comment">// deallocate inferences</span></div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keywordflow">for</span> (<a class="code" href="classHash_1_1hash__map.html#a0fae180472ddfd8822c881caf23c11a9">TInferences::iterator</a> i = d_inferences.begin(); i != d_inferences.end(); ++i) {</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keyword">delete</span> i->second;</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  }</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> }</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> </div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> </div>
<div class="line"><a name="l00062"></a><span class="lineno"><a class="code" href="classMiniSat_1_1Derivation.html#ac5cf738303de9c9c2b15d7d9e0b44cce"> 62</a></span> <span class="keywordtype">int</span> <a class="code" href="classMiniSat_1_1Derivation.html#ac5cf738303de9c9c2b15d7d9e0b44cce">Derivation::computeRootReason</a>(<a class="code" href="classMiniSat_1_1Lit.html">Lit</a> implied, <a class="code" href="classMiniSat_1_1Solver.html">Solver</a>* solver) {</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <a class="code" href="classMiniSat_1_1Clause.html">Clause</a>* reason = solver-><a class="code" href="classMiniSat_1_1Solver.html#a8660c6ceafa236f5533e432bb859aeba">getReason</a>(implied);</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="comment">// cout << "computeRootReason " << reason->id() << endl;</span></div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <a class="code" href="debug_8h.html#a2637b2fffa22e3c9fad40cda8fcc3bce" title="If something goes horribly wrong, print a message and abort immediately with exit(1).">FatalAssert</a>(d_clauses.find(reason-><a class="code" href="classMiniSat_1_1Clause.html#aeb8881da1f982f5bc58bac190ab2f2a4">id</a>()) != d_clauses.end(),</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="stringliteral">"MiniSat::Derivation::computeRootReason: implied reason not registered"</span>);</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <a class="code" href="debug_8h.html#a2637b2fffa22e3c9fad40cda8fcc3bce" title="If something goes horribly wrong, print a message and abort immediately with exit(1).">FatalAssert</a>(reason == d_clauses.find(reason-><a class="code" href="classMiniSat_1_1Clause.html#aeb8881da1f982f5bc58bac190ab2f2a4">id</a>())->second,</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="stringliteral">"MiniSat::Derivation::computeRootReason: implied reason not same as registered"</span>);</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <a class="code" href="debug_8h.html#a2637b2fffa22e3c9fad40cda8fcc3bce" title="If something goes horribly wrong, print a message and abort immediately with exit(1).">FatalAssert</a>(reason != NULL, <span class="stringliteral">"MiniSat::Derivation::computeRootReason: implied reason is NULL"</span>);</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <a class="code" href="debug_8h.html#a2637b2fffa22e3c9fad40cda8fcc3bce" title="If something goes horribly wrong, print a message and abort immediately with exit(1).">FatalAssert</a>(reason != <a class="code" href="classMiniSat_1_1Clause.html#a9a00e9c7831cc291c83d54bf4188e830">Clause::Decision</a>(), <span class="stringliteral">"MiniSat::Derivation::computeRootReason: implied is a decision"</span>);</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <a class="code" href="debug_8h.html#a2637b2fffa22e3c9fad40cda8fcc3bce" title="If something goes horribly wrong, print a message and abort immediately with exit(1).">FatalAssert</a>((*reason)[0] == implied, <span class="stringliteral">"MiniSat::Derivation::computeRootReason: implied is not in its reason"</span>);</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <a class="code" href="debug_8h.html#a600cb2d68efe7cc413cccbb5714c7016">IF_DEBUG</a> (</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <a class="code" href="debug_8h.html#a2637b2fffa22e3c9fad40cda8fcc3bce" title="If something goes horribly wrong, print a message and abort immediately with exit(1).">FatalAssert</a>(solver-><a class="code" href="classMiniSat_1_1Solver.html#adc9d01899ff6c1eefea8749a1a97309b" title="clauses / assignment">getValue</a>((*reason)[0]) == <a class="code" href="namespaceMiniSat.html#ad0b6e52186f3374f569c4de9db621be1">l_True</a>,</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="stringliteral">"MiniSat::Derivation::computeRootReason: literal not implied (TRUE)"</span>);</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 1; i < reason-><a class="code" href="classMiniSat_1_1Clause.html#adf5aa50a639b4b5bb71e5ea76d45b8e2">size</a>(); ++i) {</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <a class="code" href="debug_8h.html#a2637b2fffa22e3c9fad40cda8fcc3bce" title="If something goes horribly wrong, print a message and abort immediately with exit(1).">FatalAssert</a>(solver-><a class="code" href="classMiniSat_1_1Solver.html#adc9d01899ff6c1eefea8749a1a97309b" title="clauses / assignment">getValue</a>((*reason)[i]) == <a class="code" href="namespaceMiniSat.html#a810166165364a8a8262d24b13d7b1da9">l_False</a>,</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="stringliteral">"MiniSat::Derivation::computeRootReason: literal not implied (FALSE)"</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> </div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="comment">// already a unit clause, so done</span></div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keywordflow">if</span> (reason-><a class="code" href="classMiniSat_1_1Clause.html#adf5aa50a639b4b5bb71e5ea76d45b8e2">size</a>() == 1) {</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="keywordflow">return</span> reason-><a class="code" href="classMiniSat_1_1Clause.html#aeb8881da1f982f5bc58bac190ab2f2a4">id</a>();</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</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>  <span class="comment">// already derived the unit clause internally</span></div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <a class="code" href="classHash_1_1hash__map.html#a34789fb591a84314e78bd17b69aa6065">TClauses::const_iterator</a> iter = d_unitClauses.find(implied.<a class="code" href="classMiniSat_1_1Lit.html#a91d2d44275fe1e43cee4ce673b2ab41d">index</a>());</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="keywordflow">if</span> (iter != d_unitClauses.end()) {</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keywordflow">return</span> iter->second->id();</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  }</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> </div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> </div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="comment">// otherwise resolve the reason ...</span></div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <a class="code" href="classMiniSat_1_1Inference.html">Inference</a>* inference = <span class="keyword">new</span> <a class="code" href="classMiniSat_1_1Inference.html">Inference</a>(reason-><a class="code" href="classMiniSat_1_1Clause.html#aeb8881da1f982f5bc58bac190ab2f2a4">id</a>());</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 1; i < reason-><a class="code" href="classMiniSat_1_1Clause.html#adf5aa50a639b4b5bb71e5ea76d45b8e2">size</a>(); ++i) {</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <a class="code" href="classMiniSat_1_1Lit.html">Lit</a> lit((*reason)[i]);</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  inference-><a class="code" href="classMiniSat_1_1Inference.html#a61184032373fe3049198f8e3a71e436f">add</a>(lit, computeRootReason(~lit, solver));</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  }</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> </div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="comment">// and create the new unit clause</span></div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="comment">// (after resolve, so that clause ids are chronological wrt. inference)</span></div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  vector<Lit> literals;</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  literals.push_back(implied);</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <a class="code" href="classMiniSat_1_1Clause.html">Clause</a>* unit = <a class="code" href="namespaceMiniSat.html#a9a3ff2cc55978ca3a973861cad2814e2">Clause_new</a>(literals, <a class="code" href="classCVC3_1_1Theorem.html">CVC3::Theorem</a>(), solver-><a class="code" href="classMiniSat_1_1Solver.html#a7323aff4aaa93c01e6008e8e033d2b8f">nextClauseID</a>());</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span> </div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  d_unitClauses[implied.<a class="code" href="classMiniSat_1_1Lit.html#a91d2d44275fe1e43cee4ce673b2ab41d">index</a>()] = unit;</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="comment">// cout << "compute root reason : " << unit->id() << endl;</span></div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  registerClause(unit);</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  registerInference(unit-><a class="code" href="classMiniSat_1_1Clause.html#aeb8881da1f982f5bc58bac190ab2f2a4">id</a>(), inference);</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> </div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keywordflow">return</span> unit-><a class="code" href="classMiniSat_1_1Clause.html#aeb8881da1f982f5bc58bac190ab2f2a4">id</a>();</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> }</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span> </div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> </div>
<div class="line"><a name="l00115"></a><span class="lineno"><a class="code" href="classMiniSat_1_1Derivation.html#ad17e91fe3a421ef68df9463710c5fdc9"> 115</a></span> <span class="keywordtype">void</span> <a class="code" href="classMiniSat_1_1Derivation.html#ad17e91fe3a421ef68df9463710c5fdc9">Derivation::finish</a>(<a class="code" href="classMiniSat_1_1Clause.html">Clause</a>* clause, <a class="code" href="classMiniSat_1_1Solver.html">Solver</a>* solver) {</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <a class="code" href="debug_8h.html#a2637b2fffa22e3c9fad40cda8fcc3bce" title="If something goes horribly wrong, print a message and abort immediately with exit(1).">FatalAssert</a>(clause != NULL, <span class="stringliteral">"MiniSat::derivation:finish:"</span>);</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span> </div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="comment">// already the empty clause</span></div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <span class="keywordflow">if</span> (clause-><a class="code" href="classMiniSat_1_1Clause.html#adf5aa50a639b4b5bb71e5ea76d45b8e2">size</a>() == 0) {</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  d_emptyClause = clause;</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  }</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="comment">// derive the empty clause</span></div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <a class="code" href="classMiniSat_1_1Inference.html">Inference</a>* inference = <span class="keyword">new</span> <a class="code" href="classMiniSat_1_1Inference.html">Inference</a>(clause-><a class="code" href="classMiniSat_1_1Clause.html#aeb8881da1f982f5bc58bac190ab2f2a4">id</a>());</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < clause-><a class="code" href="classMiniSat_1_1Clause.html#adf5aa50a639b4b5bb71e5ea76d45b8e2">size</a>(); ++i) {</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <a class="code" href="classMiniSat_1_1Lit.html">Lit</a> lit((*clause)[i]);</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  inference-><a class="code" href="classMiniSat_1_1Inference.html#a61184032373fe3049198f8e3a71e436f">add</a>(lit, computeRootReason(~lit, solver));</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>  vector<Lit> literals;</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <a class="code" href="classMiniSat_1_1Clause.html">Clause</a>* empty = <a class="code" href="namespaceMiniSat.html#a9a3ff2cc55978ca3a973861cad2814e2">Clause_new</a>(literals, <a class="code" href="classCVC3_1_1Theorem.html">CVC3::Theorem</a>(), solver-><a class="code" href="classMiniSat_1_1Solver.html#a7323aff4aaa93c01e6008e8e033d2b8f">nextClauseID</a>());</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  removedClause(empty);</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  d_emptyClause = empty;</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  registerClause(empty);</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  registerInference(empty-><a class="code" href="classMiniSat_1_1Clause.html#aeb8881da1f982f5bc58bac190ab2f2a4">id</a>(), inference);</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  }</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>  checkDerivation(clause);</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <a class="code" href="debug_8h.html#a600cb2d68efe7cc413cccbb5714c7016">IF_DEBUG</a> (checkDerivation(clause));</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> </div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span> <span class="comment">// cout << "PROOF_START" << endl;</span></div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span> <span class="comment">// printDerivation();</span></div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span> <span class="comment">// cout << "PROOF_END" << endl;</span></div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> </div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span> }</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span> </div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span> </div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span> </div>
<div class="line"><a name="l00148"></a><span class="lineno"><a class="code" href="classMiniSat_1_1Derivation.html#ac419e5de02d38bdc729487c82fa93de2"> 148</a></span> <span class="keywordtype">void</span> <a class="code" href="classMiniSat_1_1Derivation.html#ac419e5de02d38bdc729487c82fa93de2">Derivation::checkDerivation</a>(<a class="code" href="classMiniSat_1_1Clause.html">Clause</a>* clause) {</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <span class="comment">// find all relevant clauses</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>  <span class="comment">// - relevant: set clauses used in derivation</span></div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  <span class="comment">// - regress: relevant clauses whose antecedents have to be checked</span></div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  std::set<int> relevant;</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  std::set<int> regress;</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span> </div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  regress.insert(clause-><a class="code" href="classMiniSat_1_1Clause.html#aeb8881da1f982f5bc58bac190ab2f2a4">id</a>());</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="keywordflow">while</span> (!regress.empty()) {</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="comment">// pick next clause to derive - start from bottom, i.e. latest derived clause</span></div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="keywordtype">int</span> clauseID = *(regress.rbegin());</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  regress.erase(clauseID);</div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span> </div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <span class="comment">// move to clauses relevant for the derivation</span></div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <a class="code" href="debug_8h.html#a2637b2fffa22e3c9fad40cda8fcc3bce" title="If something goes horribly wrong, print a message and abort immediately with exit(1).">FatalAssert</a>(relevant.count(clauseID) == 0, <span class="stringliteral">"Solver::printProof: already in relevant"</span>);</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  relevant.insert(clauseID);</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>  <span class="comment">// process antecedents</span></div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <a class="code" href="classHash_1_1hash__map.html#a34789fb591a84314e78bd17b69aa6065">TInferences::const_iterator</a> iter = d_inferences.find(clauseID);</div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <span class="comment">// input clause</span></div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="keywordflow">if</span> (iter == d_inferences.end()) {</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <a class="code" href="debug_8h.html#a2637b2fffa22e3c9fad40cda8fcc3bce" title="If something goes horribly wrong, print a message and abort immediately with exit(1).">FatalAssert</a>(d_inputClauses.contains(clauseID),</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="stringliteral">"Solver::printProof: clause without antecedents is not marked as input clause"</span>);</div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  }</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span> </div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <a class="code" href="classMiniSat_1_1Inference.html">Inference</a>* inference = iter->second;</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  regress.insert(inference-><a class="code" href="classMiniSat_1_1Inference.html#a932d4071d9f794757ad9db27cb3fd1a3">getStart</a>());</div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <span class="keyword">const</span> <a class="code" href="classMiniSat_1_1Inference.html#a0eef845f209a9bc406fe887c34f82553">Inference::TSteps</a>& steps = inference-><a class="code" href="classMiniSat_1_1Inference.html#a4111b13d1401b38cbe749357793883fa">getSteps</a>();</div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  <span class="keywordflow">for</span> (Inference::TSteps::const_iterator step = steps.begin(); step != steps.end(); ++step) {</div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  regress.insert(step->second);</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  }</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  }</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  }</div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span> </div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span> </div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  <span class="comment">// check derivation</span></div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  <span class="keywordflow">for</span> (std::set<int>::iterator i = relevant.begin(); i != relevant.end(); ++i) {</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  <span class="keywordtype">int</span> clauseID = *i;</div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <a class="code" href="debug_8h.html#a2637b2fffa22e3c9fad40cda8fcc3bce" title="If something goes horribly wrong, print a message and abort immediately with exit(1).">FatalAssert</a>(d_clauses.contains(clauseID),</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  <span class="stringliteral">"MiniSat::Derivation::printProof: clause id in proof is not in clauses"</span>);</div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  <a class="code" href="classMiniSat_1_1Clause.html">Clause</a>* clause = d_clauses.find(clauseID)->second;</div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span> </div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  <a class="code" href="classMiniSat_1_1Inference.html">Inference</a>* inference = NULL;</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <a class="code" href="classHash_1_1hash__map.html#a34789fb591a84314e78bd17b69aa6065">TInferences::const_iterator</a> j = d_inferences.find(clauseID);</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <span class="keywordflow">if</span> (j != d_inferences.end()) {</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  inference = j->second;</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  }</div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span> </div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  <a class="code" href="debug_8h.html#a2637b2fffa22e3c9fad40cda8fcc3bce" title="If something goes horribly wrong, print a message and abort immediately with exit(1).">FatalAssert</a>(inference != NULL || d_inputClauses.contains(clauseID),</div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  <span class="stringliteral">"MiniSat::Derivation::printProof: derivation of input clause"</span>);</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  <a class="code" href="debug_8h.html#a2637b2fffa22e3c9fad40cda8fcc3bce" title="If something goes horribly wrong, print a message and abort immediately with exit(1).">FatalAssert</a>(inference == NULL || !d_inputClauses.contains(clauseID),</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  <span class="stringliteral">"MiniSat::Derivation::printProof: no derivation for derived clause"</span>);</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>  <span class="keywordflow">if</span> (inference != NULL) {</div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="comment">// cout << "Regress: " << clause->id() << " : " << clause->toString() << endl;</span></div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  <a class="code" href="debug_8h.html#a2637b2fffa22e3c9fad40cda8fcc3bce" title="If something goes horribly wrong, print a message and abort immediately with exit(1).">FatalAssert</a>(d_clauses.find(inference-><a class="code" href="classMiniSat_1_1Inference.html#a932d4071d9f794757ad9db27cb3fd1a3">getStart</a>()) != d_clauses.end(),</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  <span class="stringliteral">"MiniSat::Derivation::printProof: first not in clauses"</span>);</div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span> </div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  <a class="code" href="classMiniSat_1_1Clause.html">Clause</a>* first = d_clauses.find(inference-><a class="code" href="classMiniSat_1_1Inference.html#a932d4071d9f794757ad9db27cb3fd1a3">getStart</a>())->second;</div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  <span class="comment">// cout << "Derived from : " << first->id() << " : " << first->toString() << endl;</span></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>  set<Lit> derived;</div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < first->size(); ++i) {</div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  derived.insert((*first)[i]);</div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  }</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>  <span class="comment">// retrace derivation</span></div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <span class="keywordflow">for</span> (Inference::TSteps::const_iterator step = inference-><a class="code" href="classMiniSat_1_1Inference.html#a4111b13d1401b38cbe749357793883fa">getSteps</a>().begin();</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  step != inference-><a class="code" href="classMiniSat_1_1Inference.html#a4111b13d1401b38cbe749357793883fa">getSteps</a>().end(); ++step) {</div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  <a class="code" href="classMiniSat_1_1Lit.html">Lit</a> lit = step->first;</div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  <span class="comment">// cout << " over " << lit.toString() << endl;</span></div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  <span class="comment">// cout << "Derived from ... : " << step->second << " : " << d_clauses.find(step->second)->second->toString() << endl;</span></div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span> </div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  <a class="code" href="debug_8h.html#a2637b2fffa22e3c9fad40cda8fcc3bce" title="If something goes horribly wrong, print a message and abort immediately with exit(1).">FatalAssert</a>(d_clauses.find(step->second) != d_clauses.end(),</div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  <span class="stringliteral">"MiniSat::Derivation::printProof: next not in clauses"</span>);</div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  <a class="code" href="classMiniSat_1_1Clause.html">Clause</a>* next = d_clauses.find(step->second)->second;</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#a2637b2fffa22e3c9fad40cda8fcc3bce" title="If something goes horribly wrong, print a message and abort immediately with exit(1).">FatalAssert</a>(derived.find(lit) != derived.end(),</div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  <span class="stringliteral">"MiniSat::Derivation::printProof: lit not in derived"</span>);</div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  <a class="code" href="debug_8h.html#a2637b2fffa22e3c9fad40cda8fcc3bce" title="If something goes horribly wrong, print a message and abort immediately with exit(1).">FatalAssert</a>(next->contains(~lit),</div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  <span class="stringliteral">"MiniSat::Derivation::printProof: ~lit not in next"</span>);</div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span> </div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  derived.erase(lit);</div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < next->size(); ++i) {</div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  <span class="keywordflow">if</span> ((*next)[i] != ~lit) {</div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  derived.insert((*next)[i]);</div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  }</div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</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>  <span class="comment">// check that we got the expected clause</span></div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < clause->size(); ++i) {</div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  <a class="code" href="debug_8h.html#a2637b2fffa22e3c9fad40cda8fcc3bce" title="If something goes horribly wrong, print a message and abort immediately with exit(1).">FatalAssert</a>(derived.find((*clause)[i]) != derived.end(),</div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  <span class="stringliteral">"MiniSat::Derivation::printProof: didn't derive expected clause"</span>);</div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  derived.erase((*clause)[i]);</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>  <a class="code" href="debug_8h.html#a2637b2fffa22e3c9fad40cda8fcc3bce" title="If something goes horribly wrong, print a message and abort immediately with exit(1).">FatalAssert</a>(derived.empty(),</div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  <span class="stringliteral">"MiniSat::Derivation::printProof: didn't derive expected clause 2"</span>);</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>  }</div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span> }</div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span> </div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span> </div>
<div class="line"><a name="l00253"></a><span class="lineno"><a class="code" href="classMiniSat_1_1Derivation.html#a5436a42caaab1bf37d9355c5bd43d251"> 253</a></span> <a class="code" href="classSAT_1_1SatProof.html">SAT::SatProof</a>* <a class="code" href="classMiniSat_1_1Derivation.html#a5436a42caaab1bf37d9355c5bd43d251">Derivation::createProof</a>() {</div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  <a class="code" href="debug_8h.html#a2637b2fffa22e3c9fad40cda8fcc3bce" title="If something goes horribly wrong, print a message and abort immediately with exit(1).">FatalAssert</a>(d_emptyClause != NULL, <span class="stringliteral">"MiniSat::Derivation:createProof: no empty clause"</span>);</div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  <a class="code" href="debug_8h.html#a2637b2fffa22e3c9fad40cda8fcc3bce" title="If something goes horribly wrong, print a message and abort immediately with exit(1).">FatalAssert</a>(d_emptyClause->size() == 0,</div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  <span class="stringliteral">"MiniSat::Derivation:createProof: empty clause is not empty"</span>);</div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  <span class="keywordflow">return</span> createProof(d_emptyClause);</div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span> }</div>
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span> </div>
<div class="line"><a name="l00260"></a><span class="lineno"><a class="code" href="classMiniSat_1_1Derivation.html#ad10061dacbd2acbcbd3c777f9fe3707b"> 260</a></span> <a class="code" href="classSAT_1_1SatProof.html">SAT::SatProof</a>* <a class="code" href="classMiniSat_1_1Derivation.html#a5436a42caaab1bf37d9355c5bd43d251">Derivation::createProof</a>(<a class="code" href="classMiniSat_1_1Clause.html">Clause</a>* clause) {</div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  checkDerivation(clause);</div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  <span class="comment">// IF_DEBUG (checkDerivation(clause));</span></div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span> </div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  <span class="comment">// find all relevant clauses</span></div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span> </div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  <span class="comment">// - relevant: set clauses used in derivation</span></div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  <span class="comment">// - regress: relevant clauses whose antecedents have to be checked</span></div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  std::set<int> relevant;</div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  std::set<int> regress;</div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  regress.insert(clause-><a class="code" href="classMiniSat_1_1Clause.html#aeb8881da1f982f5bc58bac190ab2f2a4">id</a>());</div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  <span class="keywordflow">while</span> (!regress.empty()) {</div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  <span class="comment">// pick next clause to derive - start from bottom, i.e. latest derived clause</span></div>
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  <span class="keywordtype">int</span> clauseID = *(regress.rbegin());</div>
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  regress.erase(clauseID);</div>
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  relevant.insert(clauseID);</div>
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span> </div>
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  <span class="comment">// process antecedents</span></div>
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  <a class="code" href="classHash_1_1hash__map.html#a34789fb591a84314e78bd17b69aa6065">TInferences::const_iterator</a> iter = d_inferences.find(clauseID);</div>
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  <span class="comment">// input clause</span></div>
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  <span class="keywordflow">if</span> (iter != d_inferences.end()) {</div>
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  <a class="code" href="classMiniSat_1_1Inference.html">Inference</a>* inference = iter->second;</div>
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  regress.insert(inference-><a class="code" href="classMiniSat_1_1Inference.html#a932d4071d9f794757ad9db27cb3fd1a3">getStart</a>());</div>
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  <span class="keyword">const</span> <a class="code" href="classMiniSat_1_1Inference.html#a0eef845f209a9bc406fe887c34f82553">Inference::TSteps</a>& steps = inference-><a class="code" href="classMiniSat_1_1Inference.html#a4111b13d1401b38cbe749357793883fa">getSteps</a>();</div>
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  <span class="keywordflow">for</span> (Inference::TSteps::const_iterator step = steps.begin(); step != steps.end(); ++step) {</div>
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  regress.insert(step->second);</div>
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  }</div>
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  }</div>
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  }</div>
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span> </div>
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  <span class="comment">// create proof</span></div>
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  <a class="code" href="classSAT_1_1SatProof.html">SAT::SatProof</a>* proof = <span class="keyword">new</span> <a class="code" href="classSAT_1_1SatProof.html">SAT::SatProof</a>();</div>
<div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  <a class="code" href="classHash_1_1hash__map.html">std::hash_map<int, SAT::SatProofNode*></a> proofNodes;</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>  <span class="keywordflow">for</span> (std::set<int>::iterator i = relevant.begin(); i != relevant.end(); ++i) {</div>
<div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  <span class="keywordtype">int</span> clauseID = *i;</div>
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  <a class="code" href="classMiniSat_1_1Clause.html">Clause</a>* clause = d_clauses.find(clauseID)->second;</div>
<div class="line"><a name="l00297"></a><span class="lineno"> 297</span> </div>
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  <a class="code" href="classMiniSat_1_1Inference.html">Inference</a>* inference = NULL;</div>
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  <a class="code" href="classHash_1_1hash__map.html#a34789fb591a84314e78bd17b69aa6065">TInferences::const_iterator</a> j = d_inferences.find(clauseID);</div>
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  <span class="keywordflow">if</span> (j == d_inferences.end()) {</div>
<div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span> <span class="comment"><<<<<<< minisat_derivation.cpp</span></div>
<div class="line"><a name="l00303"></a><span class="lineno"> 303</span> <span class="comment"> FatalAssert(clause->getCvcClause() != NULL, "createProof: leaf without clause");</span></div>
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span> <span class="comment"> FatalAssert(clause->getCvcClause() != NULL, "createProof: leaf without clause");</span></div>
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span> <span class="comment"> proofNodes[clause->id()] = proof->registerLeaf(clause->getCvcClause());</span></div>
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span> <span class="comment"> // cout<<"cluase with :" << clause->id() << " ---> " ;</span></div>
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span> <span class="comment"> // clause->getCvcClause()->print();</span></div>
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span> <span class="comment"> // cout << endl;</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>  <a class="code" href="debug_8h.html#a2637b2fffa22e3c9fad40cda8fcc3bce" title="If something goes horribly wrong, print a message and abort immediately with exit(1).">FatalAssert</a>(!clause-><a class="code" href="classMiniSat_1_1Clause.html#a16f3db82b77ca7e28752602bf1dc8177">getTheorem</a>().<a class="code" href="classCVC3_1_1Theorem.html#afc6fdb0507eb3669e28d9be5ed0bd333">isNull</a>(), <span class="stringliteral">"createProof: leaf without clause"</span>);</div>
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  proofNodes[clause-><a class="code" href="classMiniSat_1_1Clause.html#aeb8881da1f982f5bc58bac190ab2f2a4">id</a>()] = proof-><a class="code" href="classSAT_1_1SatProof.html#a36554406554d1f6ea793c98b104bd071">registerLeaf</a>(clause-><a class="code" href="classMiniSat_1_1Clause.html#a16f3db82b77ca7e28752602bf1dc8177">getTheorem</a>());</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">>>>>>>> 1.9</span></div>
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00316"></a><span class="lineno"> 316</span>  }</div>
<div class="line"><a name="l00317"></a><span class="lineno"> 317</span> </div>
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span>  <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span>  inference = j->second;</div>
<div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  <a class="code" href="debug_8h.html#a2637b2fffa22e3c9fad40cda8fcc3bce" title="If something goes horribly wrong, print a message and abort immediately with exit(1).">FatalAssert</a>(proofNodes.<a class="code" href="classHash_1_1hash__map.html#a48feee7c5690c9cd9ba1b0817ca3ae9f" title="status">contains</a>(inference-><a class="code" href="classMiniSat_1_1Inference.html#a932d4071d9f794757ad9db27cb3fd1a3">getStart</a>()), <span class="stringliteral">"createProof: contains inference start"</span>);</div>
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  <a class="code" href="classSAT_1_1SatProofNode.html">SAT::SatProofNode</a>* <a class="code" href="namespaceMiniSat.html#ad93cb56673487974071ed3b75bf4ea83">left</a> = proofNodes.<a class="code" href="classHash_1_1hash__map.html#af3317f9087a35d09985b6513c45d2ab8" title="operations">find</a>(inference-><a class="code" href="classMiniSat_1_1Inference.html#a932d4071d9f794757ad9db27cb3fd1a3">getStart</a>())->second;</div>
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  <span class="keyword">const</span> <a class="code" href="classMiniSat_1_1Inference.html#a0eef845f209a9bc406fe887c34f82553">Inference::TSteps</a>& steps = inference-><a class="code" href="classMiniSat_1_1Inference.html#a4111b13d1401b38cbe749357793883fa">getSteps</a>();</div>
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  <span class="keywordflow">for</span> (Inference::TSteps::const_iterator step = steps.begin(); step != steps.end(); ++step) {</div>
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  <a class="code" href="debug_8h.html#a2637b2fffa22e3c9fad40cda8fcc3bce" title="If something goes horribly wrong, print a message and abort immediately with exit(1).">FatalAssert</a>(proofNodes.<a class="code" href="classHash_1_1hash__map.html#a48feee7c5690c9cd9ba1b0817ca3ae9f" title="status">contains</a>(step->second), <span class="stringliteral">"createProof: contains inference start"</span>);</div>
<div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  <a class="code" href="classSAT_1_1SatProofNode.html">SAT::SatProofNode</a>* <a class="code" href="namespaceMiniSat.html#a82558b7a36c52f5d3211d5d14bed99d4">right</a> = proofNodes.<a class="code" href="classHash_1_1hash__map.html#af3317f9087a35d09985b6513c45d2ab8" title="operations">find</a>(step->second)->second;</div>
<div class="line"><a name="l00326"></a><span class="lineno"> 326</span>  left = proof-><a class="code" href="classSAT_1_1SatProof.html#a95ddb594997f8a50a62b277f1db6c1aa">registerNode</a>(left, right, <a class="code" href="namespaceMiniSat.html#a72756c106b9bd53cf77c2aab214e7cf5">miniSatToCVC</a>(step->first));</div>
<div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  }</div>
<div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  proofNodes[clause-><a class="code" href="classMiniSat_1_1Clause.html#aeb8881da1f982f5bc58bac190ab2f2a4">id</a>()] = <a class="code" href="namespaceMiniSat.html#ad93cb56673487974071ed3b75bf4ea83">left</a>;</div>
<div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  }</div>
<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  }</div>
<div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  proof-><a class="code" href="classSAT_1_1SatProof.html#a0eba2c0baf1019cef7b96b5af3e2aa5c">setRoot</a>(proofNodes[clause-><a class="code" href="classMiniSat_1_1Clause.html#aeb8881da1f982f5bc58bac190ab2f2a4">id</a>()]);</div>
<div class="line"><a name="l00332"></a><span class="lineno"> 332</span>  <span class="keywordflow">return</span> proof;</div>
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span> }</div>
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span> </div>
<div class="line"><a name="l00335"></a><span class="lineno"> 335</span> </div>
<div class="line"><a name="l00336"></a><span class="lineno"><a class="code" href="classMiniSat_1_1Derivation.html#aec406575f21e97084cffa7c05b566833"> 336</a></span> <span class="keywordtype">void</span> <a class="code" href="classMiniSat_1_1Derivation.html#aec406575f21e97084cffa7c05b566833">Derivation::printDerivation</a>() {</div>
<div class="line"><a name="l00337"></a><span class="lineno"> 337</span>  <a class="code" href="debug_8h.html#a2637b2fffa22e3c9fad40cda8fcc3bce" title="If something goes horribly wrong, print a message and abort immediately with exit(1).">FatalAssert</a>(d_emptyClause != NULL, <span class="stringliteral">"MiniSat::Derivation:printDerivation: no empty clause"</span>);</div>
<div class="line"><a name="l00338"></a><span class="lineno"> 338</span>  <a class="code" href="debug_8h.html#a2637b2fffa22e3c9fad40cda8fcc3bce" title="If something goes horribly wrong, print a message and abort immediately with exit(1).">FatalAssert</a>(d_emptyClause->size() == 0,</div>
<div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  <span class="stringliteral">"MiniSat::Derivation:printDerivation: empty clause is not empty"</span>);</div>
<div class="line"><a name="l00340"></a><span class="lineno"> 340</span>  printDerivation(d_emptyClause);</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"><a class="code" href="classMiniSat_1_1Derivation.html#a8bb228e6baaead5ff5122a65fa64b123"> 343</a></span> <span class="keywordtype">void</span> <a class="code" href="classMiniSat_1_1Derivation.html#aec406575f21e97084cffa7c05b566833">Derivation::printDerivation</a>(<a class="code" href="classMiniSat_1_1Clause.html">Clause</a>* clause) {</div>
<div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  <a class="code" href="debug_8h.html#a600cb2d68efe7cc413cccbb5714c7016">IF_DEBUG</a> (checkDerivation(clause));</div>
<div class="line"><a name="l00345"></a><span class="lineno"> 345</span> </div>
<div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  <span class="comment">// find all relevant clauses</span></div>
<div class="line"><a name="l00347"></a><span class="lineno"> 347</span> </div>
<div class="line"><a name="l00348"></a><span class="lineno"> 348</span>  <span class="comment">// - relevant: set clauses used in derivation</span></div>
<div class="line"><a name="l00349"></a><span class="lineno"> 349</span>  <span class="comment">// - regress: relevant clauses whose antecedents have to be checked</span></div>
<div class="line"><a name="l00350"></a><span class="lineno"> 350</span>  std::set<int> relevant;</div>
<div class="line"><a name="l00351"></a><span class="lineno"> 351</span>  std::set<int> regress;</div>
<div class="line"><a name="l00352"></a><span class="lineno"> 352</span> </div>
<div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  regress.insert(clause-><a class="code" href="classMiniSat_1_1Clause.html#aeb8881da1f982f5bc58bac190ab2f2a4">id</a>());</div>
<div class="line"><a name="l00354"></a><span class="lineno"> 354</span>  <span class="keywordflow">while</span> (!regress.empty()) {</div>
<div class="line"><a name="l00355"></a><span class="lineno"> 355</span>  <span class="comment">// pick next clause to derive - start from bottom, i.e. latest derived clause</span></div>
<div class="line"><a name="l00356"></a><span class="lineno"> 356</span>  <span class="keywordtype">int</span> clauseID = *(regress.rbegin());</div>
<div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  regress.erase(clauseID);</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="comment">// move to clauses relevant for the derivation</span></div>
<div class="line"><a name="l00360"></a><span class="lineno"> 360</span>  relevant.insert(clauseID);</div>
<div class="line"><a name="l00361"></a><span class="lineno"> 361</span> </div>
<div class="line"><a name="l00362"></a><span class="lineno"> 362</span>  <span class="comment">// process antecedents</span></div>
<div class="line"><a name="l00363"></a><span class="lineno"> 363</span>  <a class="code" href="classHash_1_1hash__map.html#a34789fb591a84314e78bd17b69aa6065">TInferences::const_iterator</a> iter = d_inferences.find(clauseID);</div>
<div class="line"><a name="l00364"></a><span class="lineno"> 364</span>  <span class="comment">// input clause</span></div>
<div class="line"><a name="l00365"></a><span class="lineno"> 365</span>  <span class="keywordflow">if</span> (iter != d_inferences.end()) {</div>
<div class="line"><a name="l00366"></a><span class="lineno"> 366</span>  <a class="code" href="classMiniSat_1_1Inference.html">Inference</a>* inference = iter->second;</div>
<div class="line"><a name="l00367"></a><span class="lineno"> 367</span>  regress.insert(inference-><a class="code" href="classMiniSat_1_1Inference.html#a932d4071d9f794757ad9db27cb3fd1a3">getStart</a>());</div>
<div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  <span class="keyword">const</span> <a class="code" href="classMiniSat_1_1Inference.html#a0eef845f209a9bc406fe887c34f82553">Inference::TSteps</a>& steps = inference-><a class="code" href="classMiniSat_1_1Inference.html#a4111b13d1401b38cbe749357793883fa">getSteps</a>();</div>
<div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  <span class="keywordflow">for</span> (Inference::TSteps::const_iterator step = steps.begin(); step != steps.end(); ++step) {</div>
<div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  regress.insert(step->second);</div>
<div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  }</div>
<div class="line"><a name="l00372"></a><span class="lineno"> 372</span>  }</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> </div>
<div class="line"><a name="l00375"></a><span class="lineno"> 375</span> </div>
<div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  <span class="comment">// print proof</span></div>
<div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  <span class="keywordflow">for</span> (std::set<int>::iterator i = relevant.begin(); i != relevant.end(); ++i) {</div>
<div class="line"><a name="l00378"></a><span class="lineno"> 378</span>  <span class="keywordtype">int</span> clauseID = *i;</div>
<div class="line"><a name="l00379"></a><span class="lineno"> 379</span>  <a class="code" href="classMiniSat_1_1Clause.html">Clause</a>* clause = d_clauses.find(clauseID)->second;</div>
<div class="line"><a name="l00380"></a><span class="lineno"> 380</span> </div>
<div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  <a class="code" href="classMiniSat_1_1Inference.html">Inference</a>* inference = NULL;</div>
<div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  <a class="code" href="classHash_1_1hash__map.html#a34789fb591a84314e78bd17b69aa6065">TInferences::const_iterator</a> j = d_inferences.find(clauseID);</div>
<div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  <span class="keywordflow">if</span> (j != d_inferences.end()) {</div>
<div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  inference = j->second;</div>
<div class="line"><a name="l00385"></a><span class="lineno"> 385</span>  }</div>
<div class="line"><a name="l00386"></a><span class="lineno"> 386</span> </div>
<div class="line"><a name="l00387"></a><span class="lineno"> 387</span>  <span class="comment">// ID D : L1 ... Ln : C1 K1 C2 K2 ... Cm</span></div>
<div class="line"><a name="l00388"></a><span class="lineno"> 388</span>  cout << clauseID;</div>
<div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  <span class="comment">// input clause or derived clause?</span></div>
<div class="line"><a name="l00390"></a><span class="lineno"> 390</span>  <span class="keywordflow">if</span> (d_inputClauses.contains(clauseID)) {</div>
<div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  cout << <span class="stringliteral">" I "</span>;</div>
<div class="line"><a name="l00392"></a><span class="lineno"> 392</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  cout << <span class="stringliteral">" D "</span>;</div>
<div class="line"><a name="l00394"></a><span class="lineno"> 394</span>  }</div>
<div class="line"><a name="l00395"></a><span class="lineno"> 395</span>  cout << <span class="stringliteral">": "</span> << clause-><a class="code" href="classMiniSat_1_1Clause.html#a8c3dce1547e9734868eef94f91f978e1">toString</a>() << <span class="stringliteral">" : "</span>;</div>
<div class="line"><a name="l00396"></a><span class="lineno"> 396</span>  <span class="keywordflow">if</span> (inference != NULL) cout << inference-><a class="code" href="classMiniSat_1_1Inference.html#aacd9c375bc7b8b0d87a15bcd9b5d35ce">toString</a>();</div>
<div class="line"><a name="l00397"></a><span class="lineno"> 397</span>  cout << <a class="code" href="group__ExprStream__Manip.html#ga05b0ea7353ec24fa8e7e272d7a7875d8" title="Print the end-of-line.">endl</a>; </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> }</div>
<div class="line"><a name="l00400"></a><span class="lineno"> 400</span> </div>
<div class="line"><a name="l00401"></a><span class="lineno"> 401</span> </div>
<div class="line"><a name="l00402"></a><span class="lineno"><a class="code" href="classMiniSat_1_1Derivation.html#a9b35e97fb7ff5de171eeb68bfe4dda6b"> 402</a></span> <span class="keywordtype">void</span> <a class="code" href="classMiniSat_1_1Derivation.html#a9b35e97fb7ff5de171eeb68bfe4dda6b">Derivation::push</a>(<span class="keywordtype">int</span> clauseID) {</div>
<div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  <span class="comment">// cout << "derivation push: " << clauseID << endl;</span></div>
<div class="line"><a name="l00404"></a><span class="lineno"> 404</span> }</div>
<div class="line"><a name="l00405"></a><span class="lineno"> 405</span> </div>
<div class="line"><a name="l00406"></a><span class="lineno"><a class="code" href="classMiniSat_1_1Derivation.html#af3782033a2412734e9a018877f71ce5d"> 406</a></span> <span class="keywordtype">void</span> <a class="code" href="classMiniSat_1_1Derivation.html#af3782033a2412734e9a018877f71ce5d">Derivation::pop</a>(<span class="keywordtype">int</span> clauseID) {</div>
<div class="line"><a name="l00407"></a><span class="lineno"> 407</span>  <span class="comment">// cout << "derivation pop: " << clauseID << endl;</span></div>
<div class="line"><a name="l00408"></a><span class="lineno"> 408</span>  <span class="comment">// remove all popped clauses</span></div>
<div class="line"><a name="l00409"></a><span class="lineno"> 409</span>  <a class="code" href="classHash_1_1hash__map.html#a34789fb591a84314e78bd17b69aa6065">TClauses::const_iterator</a> i = d_clauses.begin();</div>
<div class="line"><a name="l00410"></a><span class="lineno"> 410</span>  <span class="keywordflow">while</span> (i != d_clauses.end()) {</div>
<div class="line"><a name="l00411"></a><span class="lineno"> 411</span>  <a class="code" href="classMiniSat_1_1Clause.html">Clause</a>* clause = (*i).second;</div>
<div class="line"><a name="l00412"></a><span class="lineno"> 412</span>  <span class="keywordflow">if</span> (</div>
<div class="line"><a name="l00413"></a><span class="lineno"> 413</span>  <span class="comment">// Warning: clause removal needs to be done</span></div>
<div class="line"><a name="l00414"></a><span class="lineno"> 414</span>  <span class="comment">// exactly the same way in minisat_solver!!!</span></div>
<div class="line"><a name="l00415"></a><span class="lineno"> 415</span> </div>
<div class="line"><a name="l00416"></a><span class="lineno"> 416</span>  <span class="comment">// remove theory lemmas</span></div>
<div class="line"><a name="l00417"></a><span class="lineno"> 417</span>  <span class="comment">// :TODO: can't do that: kept lemmas might depend on them </span></div>
<div class="line"><a name="l00418"></a><span class="lineno"> 418</span>  <span class="comment">// (!clause->learnt() && clause->pushID() < 0)</span></div>
<div class="line"><a name="l00419"></a><span class="lineno"> 419</span>  <span class="comment">// ||</span></div>
<div class="line"><a name="l00420"></a><span class="lineno"> 420</span>  <span class="comment">// remove clauses added after the last push</span></div>
<div class="line"><a name="l00421"></a><span class="lineno"> 421</span>  clause-><a class="code" href="classMiniSat_1_1Clause.html#ad5cd6daece979cb23f3c52ee0df63a0b">pushID</a>() > clauseID) {</div>
<div class="line"><a name="l00422"></a><span class="lineno"> 422</span>  <span class="keywordtype">int</span> <span class="keywordtype">id</span> = clause-><a class="code" href="classMiniSat_1_1Clause.html#aeb8881da1f982f5bc58bac190ab2f2a4">id</a>();</div>
<div class="line"><a name="l00423"></a><span class="lineno"> 423</span>  <span class="comment">// cout << "derivation pop now: " << id << endl;</span></div>
<div class="line"><a name="l00424"></a><span class="lineno"> 424</span>  d_inputClauses.erase(<span class="keywordtype">id</span>);</div>
<div class="line"><a name="l00425"></a><span class="lineno"> 425</span>  d_inferences.erase(<span class="keywordtype">id</span>);</div>
<div class="line"><a name="l00426"></a><span class="lineno"> 426</span> </div>
<div class="line"><a name="l00427"></a><span class="lineno"> 427</span>  <span class="keywordflow">if</span> (clause-><a class="code" href="classMiniSat_1_1Clause.html#adf5aa50a639b4b5bb71e5ea76d45b8e2">size</a>() == 1) {</div>
<div class="line"><a name="l00428"></a><span class="lineno"> 428</span>  <span class="keywordtype">int</span> index = (*clause)[0].index();</div>
<div class="line"><a name="l00429"></a><span class="lineno"> 429</span>  <span class="keywordflow">if</span> (d_unitClauses.contains(index) && d_unitClauses[index] == clause) {</div>
<div class="line"><a name="l00430"></a><span class="lineno"> 430</span>  d_unitClauses.erase(index);</div>
<div class="line"><a name="l00431"></a><span class="lineno"> 431</span>  <a class="code" href="debug_8h.html#a2637b2fffa22e3c9fad40cda8fcc3bce" title="If something goes horribly wrong, print a message and abort immediately with exit(1).">FatalAssert</a>(!d_unitClauses.contains(index), <span class="stringliteral">"AHA"</span>);</div>
<div class="line"><a name="l00432"></a><span class="lineno"> 432</span>  }</div>
<div class="line"><a name="l00433"></a><span class="lineno"> 433</span>  }</div>
<div class="line"><a name="l00434"></a><span class="lineno"> 434</span> </div>
<div class="line"><a name="l00435"></a><span class="lineno"> 435</span>  i = d_clauses.erase(i);</div>
<div class="line"><a name="l00436"></a><span class="lineno"> 436</span>  }</div>
<div class="line"><a name="l00437"></a><span class="lineno"> 437</span>  <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00438"></a><span class="lineno"> 438</span>  ++i;</div>
<div class="line"><a name="l00439"></a><span class="lineno"> 439</span>  }</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="comment">// undo conflicting clause</span></div>
<div class="line"><a name="l00443"></a><span class="lineno"> 443</span>  <span class="keywordflow">if</span> (d_emptyClause != NULL && d_emptyClause->pushID() > clauseID)</div>
<div class="line"><a name="l00444"></a><span class="lineno"> 444</span>  d_emptyClause = NULL;</div>
<div class="line"><a name="l00445"></a><span class="lineno"> 445</span> </div>
<div class="line"><a name="l00446"></a><span class="lineno"> 446</span>  <span class="comment">// delete popped and removed clauses</span></div>
<div class="line"><a name="l00447"></a><span class="lineno"> 447</span>  std::deque<Clause*>::iterator j = d_removedClauses.begin();</div>
<div class="line"><a name="l00448"></a><span class="lineno"> 448</span>  <span class="keywordflow">while</span> (j != d_removedClauses.end()) {</div>
<div class="line"><a name="l00449"></a><span class="lineno"> 449</span>  <span class="keywordflow">if</span> ((*j)->pushID() > clauseID) {</div>
<div class="line"><a name="l00450"></a><span class="lineno"> 450</span>  <a class="code" href="namespaceMiniSat.html#a4e5f70e98cdfee0fd9b018a267f09e4a">xfree</a>(*j);</div>
<div class="line"><a name="l00451"></a><span class="lineno"> 451</span>  j = d_removedClauses.erase(j);</div>
<div class="line"><a name="l00452"></a><span class="lineno"> 452</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00453"></a><span class="lineno"> 453</span>  ++j;</div>
<div class="line"><a name="l00454"></a><span class="lineno"> 454</span>  }</div>
<div class="line"><a name="l00455"></a><span class="lineno"> 455</span>  }</div>
<div class="line"><a name="l00456"></a><span class="lineno"> 456</span> }</div>
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