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<a href="sat__proof_8h.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 sat_proof.h</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> *\brief Sat solver proof representation</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> <span class="preprocessor">#ifndef _cvc3__sat__proof_h_</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor"></span><span class="preprocessor">#define _cvc3__sat__proof_h_</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include "<a class="code" href="theorem_8h.html">theorem.h</a>"</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include <list></span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> </div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="keyword">namespace </span>SAT {</div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  <span class="comment">// a node in a resolution tree, either:</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  <span class="comment">// - a leaf</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <span class="comment">// then d_clause is a clause added to the sat solver by the cvc controller;</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  <span class="comment">// the other values are empty</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  <span class="comment">// - a binary node</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  <span class="comment">// then the node represents the clause which can be derived by resolution</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <span class="comment">// between its left and right parent on d_lit,</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  <span class="comment">// where d_left contains d_lit and d_right contains the negation of d_lit</span></div>
<div class="line"><a name="l00037"></a><span class="lineno"><a class="code" href="classSAT_1_1SatProofNode.html"> 37</a></span>  <span class="keyword">class </span><a class="code" href="classSAT_1_1SatProofNode.html">SatProofNode</a> {</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <span class="keyword">private</span>:</div>
<div class="line"><a name="l00039"></a><span class="lineno"><a class="code" href="classSAT_1_1SatProofNode.html#a2e9be828d0f5bcb75ea37f61067433d9"> 39</a></span>  <a class="code" href="classCVC3_1_1Theorem.html">CVC3::Theorem</a> <a class="code" href="classSAT_1_1SatProofNode.html#a2e9be828d0f5bcb75ea37f61067433d9">d_theorem</a>;</div>
<div class="line"><a name="l00040"></a><span class="lineno"><a class="code" href="classSAT_1_1SatProofNode.html#a937d907130c8189318291712f6f16756"> 40</a></span>  <a class="code" href="classSAT_1_1SatProofNode.html">SatProofNode</a>* <a class="code" href="classSAT_1_1SatProofNode.html#a937d907130c8189318291712f6f16756">d_left</a>;</div>
<div class="line"><a name="l00041"></a><span class="lineno"><a class="code" href="classSAT_1_1SatProofNode.html#a7931b60e528961210273ac367327c8cd"> 41</a></span>  <a class="code" href="classSAT_1_1SatProofNode.html">SatProofNode</a>* <a class="code" href="classSAT_1_1SatProofNode.html#a7931b60e528961210273ac367327c8cd">d_right</a>;</div>
<div class="line"><a name="l00042"></a><span class="lineno"><a class="code" href="classSAT_1_1SatProofNode.html#aedc434d5b9b530c35634b196f7b1544a"> 42</a></span>  <a class="code" href="classSAT_1_1Lit.html">SAT::Lit</a> <a class="code" href="classSAT_1_1SatProofNode.html#aedc434d5b9b530c35634b196f7b1544a">d_lit</a>;</div>
<div class="line"><a name="l00043"></a><span class="lineno"><a class="code" href="classSAT_1_1SatProofNode.html#aabb35b7153c10db6dc9562667505a1fa"> 43</a></span>  <a class="code" href="classCVC3_1_1Proof.html">CVC3::Proof</a> <a class="code" href="classSAT_1_1SatProofNode.html#aabb35b7153c10db6dc9562667505a1fa">d_proof</a>; <span class="comment">// by yeting, to store the proof. We do not need to set a null value to proof bcause this is done by the constructor of proof</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="keyword">public</span>:</div>
<div class="line"><a name="l00045"></a><span class="lineno"><a class="code" href="classSAT_1_1SatProofNode.html#acaacdf7888165eb2ae633ad7b74f66fa"> 45</a></span>  <a class="code" href="classSAT_1_1SatProofNode.html#acaacdf7888165eb2ae633ad7b74f66fa">SatProofNode</a>(<a class="code" href="classCVC3_1_1Theorem.html">CVC3::Theorem</a> theorem) :</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <a class="code" href="classSAT_1_1SatProofNode.html#a2e9be828d0f5bcb75ea37f61067433d9">d_theorem</a>(theorem), <a class="code" href="classSAT_1_1SatProofNode.html#a937d907130c8189318291712f6f16756">d_left</a>(NULL), <a class="code" href="classSAT_1_1SatProofNode.html#a7931b60e528961210273ac367327c8cd">d_right</a>(NULL){</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(!theorem.<a class="code" href="classCVC3_1_1Theorem.html#afc6fdb0507eb3669e28d9be5ed0bd333">isNull</a>(), <span class="stringliteral">"SatProofNode: constructor"</span>);</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>  <span class="comment">//we can modify the constructor of SatProofNode(clause) to store the clauses</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="comment">//add a method to return all clauses here</span></div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> </div>
<div class="line"><a name="l00052"></a><span class="lineno"><a class="code" href="classSAT_1_1SatProofNode.html#a8d6a26e4f59b4c065f422b8afcb8c5a4"> 52</a></span>  <a class="code" href="classSAT_1_1SatProofNode.html#acaacdf7888165eb2ae633ad7b74f66fa">SatProofNode</a>(<a class="code" href="classSAT_1_1SatProofNode.html">SatProofNode</a>* <a class="code" href="namespaceMiniSat.html#ad93cb56673487974071ed3b75bf4ea83">left</a>, <a class="code" href="classSAT_1_1SatProofNode.html">SatProofNode</a>* <a class="code" href="namespaceMiniSat.html#a82558b7a36c52f5d3211d5d14bed99d4">right</a>, <a class="code" href="classSAT_1_1Lit.html">SAT::Lit</a> lit) :</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <a class="code" href="classSAT_1_1SatProofNode.html#a937d907130c8189318291712f6f16756">d_left</a>(left), <a class="code" href="classSAT_1_1SatProofNode.html#a7931b60e528961210273ac367327c8cd">d_right</a>(right), <a class="code" href="classSAT_1_1SatProofNode.html#aedc434d5b9b530c35634b196f7b1544a">d_lit</a>(lit) {</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(<a class="code" href="classSAT_1_1SatProofNode.html#a937d907130c8189318291712f6f16756">d_left</a> != NULL, <span class="stringliteral">"SatProofNode: constructor"</span>);</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(<a class="code" href="classSAT_1_1SatProofNode.html#a7931b60e528961210273ac367327c8cd">d_right</a> != NULL, <span class="stringliteral">"SatProofNode: constructor"</span>);</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  }</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> </div>
<div class="line"><a name="l00058"></a><span class="lineno"><a class="code" href="classSAT_1_1SatProofNode.html#a3ebf0d7ca635f0028e20b06fc5c0603a"> 58</a></span>  <span class="keywordtype">bool</span> <a class="code" href="classSAT_1_1SatProofNode.html#a3ebf0d7ca635f0028e20b06fc5c0603a">isLeaf</a>() { <span class="keywordflow">return</span> !<a class="code" href="classSAT_1_1SatProofNode.html#a2e9be828d0f5bcb75ea37f61067433d9">d_theorem</a>.<a class="code" href="classCVC3_1_1Theorem.html#afc6fdb0507eb3669e28d9be5ed0bd333">isNull</a>(); }</div>
<div class="line"><a name="l00059"></a><span class="lineno"><a class="code" href="classSAT_1_1SatProofNode.html#a7a26868e17f2fe9fef1d3b8f934de4a5"> 59</a></span>  <a class="code" href="classCVC3_1_1Theorem.html">CVC3::Theorem</a> <a class="code" href="classSAT_1_1SatProofNode.html#a7a26868e17f2fe9fef1d3b8f934de4a5">getLeaf</a>() { <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(<a class="code" href="classSAT_1_1SatProofNode.html#a3ebf0d7ca635f0028e20b06fc5c0603a">isLeaf</a>(), <span class="stringliteral">"SatProofNode: getLeaf"</span>); <span class="keywordflow">return</span> <a class="code" href="classSAT_1_1SatProofNode.html#a2e9be828d0f5bcb75ea37f61067433d9">d_theorem</a>; }</div>
<div class="line"><a name="l00060"></a><span class="lineno"><a class="code" href="classSAT_1_1SatProofNode.html#a5e8c4112ac870c8d843e54a393bea892"> 60</a></span>  <a class="code" href="classSAT_1_1SatProofNode.html">SatProofNode</a>* <a class="code" href="classSAT_1_1SatProofNode.html#a5e8c4112ac870c8d843e54a393bea892">getLeftParent</a>() { <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(!<a class="code" href="classSAT_1_1SatProofNode.html#a3ebf0d7ca635f0028e20b06fc5c0603a">isLeaf</a>(), <span class="stringliteral">"SatProofNode: getLeftParent"</span>); <span class="keywordflow">return</span> <a class="code" href="classSAT_1_1SatProofNode.html#a937d907130c8189318291712f6f16756">d_left</a>; }</div>
<div class="line"><a name="l00061"></a><span class="lineno"><a class="code" href="classSAT_1_1SatProofNode.html#a611593dffb824df842f88492bf160e80"> 61</a></span>  <a class="code" href="classSAT_1_1SatProofNode.html">SatProofNode</a>* <a class="code" href="classSAT_1_1SatProofNode.html#a611593dffb824df842f88492bf160e80">getRightParent</a>() { <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(!<a class="code" href="classSAT_1_1SatProofNode.html#a3ebf0d7ca635f0028e20b06fc5c0603a">isLeaf</a>(), <span class="stringliteral">"SatProofNode: getRightParent"</span>); <span class="keywordflow">return</span> <a class="code" href="classSAT_1_1SatProofNode.html#a7931b60e528961210273ac367327c8cd">d_right</a>; }</div>
<div class="line"><a name="l00062"></a><span class="lineno"><a class="code" href="classSAT_1_1SatProofNode.html#a08af371d991d7e9b9e3a1a32b2ab0ec4"> 62</a></span>  <a class="code" href="classSAT_1_1Lit.html">SAT::Lit</a> <a class="code" href="classSAT_1_1SatProofNode.html#a08af371d991d7e9b9e3a1a32b2ab0ec4">getLit</a>() { <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(!<a class="code" href="classSAT_1_1SatProofNode.html#a3ebf0d7ca635f0028e20b06fc5c0603a">isLeaf</a>(), <span class="stringliteral">"SatProofNode: getLit"</span>); <span class="keywordflow">return</span> <a class="code" href="classSAT_1_1SatProofNode.html#aedc434d5b9b530c35634b196f7b1544a">d_lit</a>; }</div>
<div class="line"><a name="l00063"></a><span class="lineno"><a class="code" href="classSAT_1_1SatProofNode.html#a174ea8ebc16d85209afefd5048579991"> 63</a></span>  <span class="keywordtype">bool</span> <a class="code" href="classSAT_1_1SatProofNode.html#a174ea8ebc16d85209afefd5048579991">hasNodeProof</a>() {<span class="keywordflow">return</span> !<a class="code" href="classSAT_1_1SatProofNode.html#aabb35b7153c10db6dc9562667505a1fa">d_proof</a>.<a class="code" href="classCVC3_1_1Proof.html#a24acb4848153feb8b0c88eb825b92046">isNull</a>();};</div>
<div class="line"><a name="l00064"></a><span class="lineno"><a class="code" href="classSAT_1_1SatProofNode.html#a728ac3f95a5bd503ed952d6dc9052aff"> 64</a></span>  <a class="code" href="classCVC3_1_1Proof.html">CVC3::Proof</a> <a class="code" href="classSAT_1_1SatProofNode.html#a728ac3f95a5bd503ed952d6dc9052aff">getNodeProof</a>() {<a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(!<a class="code" href="classSAT_1_1SatProofNode.html#aabb35b7153c10db6dc9562667505a1fa">d_proof</a>.<a class="code" href="classCVC3_1_1Proof.html#a24acb4848153feb8b0c88eb825b92046">isNull</a>(), <span class="stringliteral">"SatProofNode: nodeProof get null"</span>); <span class="keywordflow">return</span> <a class="code" href="classSAT_1_1SatProofNode.html#aabb35b7153c10db6dc9562667505a1fa">d_proof</a>;}</div>
<div class="line"><a name="l00065"></a><span class="lineno"><a class="code" href="classSAT_1_1SatProofNode.html#ae1bb4eb633b82329667ade6192f0d9cb"> 65</a></span>  <span class="keywordtype">void</span> <a class="code" href="classSAT_1_1SatProofNode.html#ae1bb4eb633b82329667ade6192f0d9cb">setNodeProof</a>(<a class="code" href="classCVC3_1_1Proof.html">CVC3::Proof</a> pf) { <a class="code" href="classSAT_1_1SatProofNode.html#aabb35b7153c10db6dc9562667505a1fa">d_proof</a>=pf;}</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="comment">// a proof of the clause d_root</span></div>
<div class="line"><a name="l00070"></a><span class="lineno"><a class="code" href="classSAT_1_1SatProof.html"> 70</a></span>  <span class="keyword">class </span><a class="code" href="classSAT_1_1SatProof.html">SatProof</a> {</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="keyword">private</span>:</div>
<div class="line"><a name="l00072"></a><span class="lineno"><a class="code" href="classSAT_1_1SatProof.html#a46cd2c556578583b7a0adf7b05bd7660"> 72</a></span>  <a class="code" href="classSAT_1_1SatProofNode.html">SatProofNode</a>* <a class="code" href="classSAT_1_1SatProof.html#a46cd2c556578583b7a0adf7b05bd7660">d_root</a>;</div>
<div class="line"><a name="l00073"></a><span class="lineno"><a class="code" href="classSAT_1_1SatProof.html#ae4d5eff3f40c061bac18dff5ae128e9a"> 73</a></span>  std::list<SatProofNode*> <a class="code" href="classSAT_1_1SatProof.html#ae4d5eff3f40c061bac18dff5ae128e9a">d_nodes</a>;</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="keyword">public</span>:</div>
<div class="line"><a name="l00075"></a><span class="lineno"><a class="code" href="classSAT_1_1SatProof.html#a385e94ed24299be3d73bf3f62248bc1b"> 75</a></span>  <a class="code" href="classSAT_1_1SatProof.html#a385e94ed24299be3d73bf3f62248bc1b">SatProof</a>() : <a class="code" href="classSAT_1_1SatProof.html#a46cd2c556578583b7a0adf7b05bd7660">d_root</a>(NULL) { };</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> </div>
<div class="line"><a name="l00077"></a><span class="lineno"><a class="code" href="classSAT_1_1SatProof.html#ad9776c5c921afe42387faee309e22fdb"> 77</a></span>  <a class="code" href="classSAT_1_1SatProof.html#ad9776c5c921afe42387faee309e22fdb">~SatProof</a>() {</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keywordflow">for</span> (std::list<SatProofNode*>::iterator i = <a class="code" href="classSAT_1_1SatProof.html#ae4d5eff3f40c061bac18dff5ae128e9a">d_nodes</a>.begin(); i != <a class="code" href="classSAT_1_1SatProof.html#ae4d5eff3f40c061bac18dff5ae128e9a">d_nodes</a>.end(); ++i) {</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keyword">delete</span>(*i);</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>  }</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> </div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> </div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="comment">// build proof</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">// ownership of created node remains with SatProof</span></div>
<div class="line"><a name="l00087"></a><span class="lineno"><a class="code" href="classSAT_1_1SatProof.html#a36554406554d1f6ea793c98b104bd071"> 87</a></span>  <a class="code" href="classSAT_1_1SatProofNode.html">SatProofNode</a>* <a class="code" href="classSAT_1_1SatProof.html#a36554406554d1f6ea793c98b104bd071">registerLeaf</a>(<a class="code" href="classCVC3_1_1Theorem.html">CVC3::Theorem</a> theorem) {</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <a class="code" href="classSAT_1_1SatProofNode.html">SatProofNode</a>* node = <span class="keyword">new</span> <a class="code" href="classSAT_1_1SatProofNode.html">SatProofNode</a>(theorem);</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <a class="code" href="classSAT_1_1SatProof.html#ae4d5eff3f40c061bac18dff5ae128e9a">d_nodes</a>.push_back(node);</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keywordflow">return</span> node;</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">// ownership of created node remains with SatProof</span></div>
<div class="line"><a name="l00094"></a><span class="lineno"><a class="code" href="classSAT_1_1SatProof.html#a95ddb594997f8a50a62b277f1db6c1aa"> 94</a></span>  <a class="code" href="classSAT_1_1SatProofNode.html">SatProofNode</a>* <a class="code" href="classSAT_1_1SatProof.html#a95ddb594997f8a50a62b277f1db6c1aa">registerNode</a>(<a class="code" href="classSAT_1_1SatProofNode.html">SatProofNode</a>* <a class="code" href="namespaceMiniSat.html#ad93cb56673487974071ed3b75bf4ea83">left</a>, <a class="code" href="classSAT_1_1SatProofNode.html">SatProofNode</a>* <a class="code" href="namespaceMiniSat.html#a82558b7a36c52f5d3211d5d14bed99d4">right</a>, <a class="code" href="classSAT_1_1Lit.html">SAT::Lit</a> l) {</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <a class="code" href="classSAT_1_1SatProofNode.html">SatProofNode</a>* node = <span class="keyword">new</span> <a class="code" href="classSAT_1_1SatProofNode.html">SatProofNode</a>(left, right, l);</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <a class="code" href="classSAT_1_1SatProof.html#ae4d5eff3f40c061bac18dff5ae128e9a">d_nodes</a>.push_back(node);</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keywordflow">return</span> node;</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"><a class="code" href="classSAT_1_1SatProof.html#a0eba2c0baf1019cef7b96b5af3e2aa5c"> 100</a></span>  <span class="keywordtype">void</span> <a class="code" href="classSAT_1_1SatProof.html#a0eba2c0baf1019cef7b96b5af3e2aa5c">setRoot</a>(<a class="code" href="classSAT_1_1SatProofNode.html">SatProofNode</a>* root) {</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <a class="code" href="classSAT_1_1SatProof.html#a46cd2c556578583b7a0adf7b05bd7660">d_root</a> = root;</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">// access proof</span></div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span> </div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="comment">// ownership of all nodes remains with SatProof</span></div>
<div class="line"><a name="l00108"></a><span class="lineno"><a class="code" href="classSAT_1_1SatProof.html#af60143aa39c6a582d71c9d61bb816bfb"> 108</a></span>  <a class="code" href="classSAT_1_1SatProofNode.html">SatProofNode</a>* <a class="code" href="classSAT_1_1SatProof.html#af60143aa39c6a582d71c9d61bb816bfb">getRoot</a>() {</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(<a class="code" href="classSAT_1_1SatProof.html#a46cd2c556578583b7a0adf7b05bd7660">d_root</a> != NULL, <span class="stringliteral">"null root found in getRoot"</span>);</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="keywordflow">return</span> <a class="code" href="classSAT_1_1SatProof.html#a46cd2c556578583b7a0adf7b05bd7660">d_root</a>;</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  }</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"> 115</span> </div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span> <span class="preprocessor">#endif</span></div>
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