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 <span id="projectnumber">8.2</span>
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<div class="title">sat_inprocessing.cc</div> </div>
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<a href="sat__inprocessing_8cc.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">// Copyright 2010-2018 Google LLC</span></div>
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<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">// Licensed under the Apache License, Version 2.0 (the "License");</span></div>
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<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// you may not use this file except in compliance with the License.</span></div>
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<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">// You may obtain a copy of the License at</span></div>
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<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">//</span></div>
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<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">// http://www.apache.org/licenses/LICENSE-2.0</span></div>
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<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">//</span></div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">// Unless required by applicable law or agreed to in writing, software</span></div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">// distributed under the License is distributed on an "AS IS" BASIS,</span></div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment">// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">// See the License for the specific language governing permissions and</span></div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">// limitations under the License.</span></div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>  </div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include "<a class="code" href="sat__inprocessing_8h.html">ortools/sat/sat_inprocessing.h</a>"</span></div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>  </div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#include "absl/container/inlined_vector.h"</span></div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#include "<a class="code" href="stl__util_8h.html">ortools/base/stl_util.h</a>"</span></div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor">#include "<a class="code" href="strong__vector_8h.html">ortools/base/strong_vector.h</a>"</span></div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="preprocessor">#include "<a class="code" href="timer_8h.html">ortools/base/timer.h</a>"</span></div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor">#include "<a class="code" href="probing_8h.html">ortools/sat/probing.h</a>"</span></div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#include "<a class="code" href="sat__decision_8h.html">ortools/sat/sat_decision.h</a>"</span></div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  </div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="keyword">namespace </span><a class="code" href="namespaceoperations__research.html">operations_research</a> {</div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="keyword">namespace </span>sat {</div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  </div>
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<div class="line"><a name="l00026"></a><span class="lineno"><a class="line" href="structoperations__research_1_1sat_1_1_postsolve_clauses.html#ae70f41a3895b08dd35056d97eec1800e"> 26</a></span> <span class="keywordtype">void</span> <a class="code" href="structoperations__research_1_1sat_1_1_postsolve_clauses.html#ae70f41a3895b08dd35056d97eec1800e">PostsolveClauses::AddClauseWithSpecialLiteral</a>(</div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  <a class="code" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a> <a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>, absl::Span<const Literal> clause) {</div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  <span class="keywordtype">bool</span> found = <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  <a class="code" href="structoperations__research_1_1sat_1_1_postsolve_clauses.html#a8cc6d9f1059f26a873442045a72e651e">clauses</a>.emplace_back(clause.begin(), clause.end());</div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < clause.size(); ++i) {</div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <span class="keywordflow">if</span> (clause[i] == <a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>) {</div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  found = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  std::swap(<a class="code" href="structoperations__research_1_1sat_1_1_postsolve_clauses.html#a8cc6d9f1059f26a873442045a72e651e">clauses</a>.back()[0], <a class="code" href="structoperations__research_1_1sat_1_1_postsolve_clauses.html#a8cc6d9f1059f26a873442045a72e651e">clauses</a>.back()[i]);</div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  }</div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  }</div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(found);</div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> }</div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  </div>
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<div class="line"><a name="l00040"></a><span class="lineno"><a class="line" href="sat__inprocessing_8cc.html#a73c06a952919ea45217c5a8ec59c4088"> 40</a></span> <span class="preprocessor">#define RETURN_IF_FALSE(f) \</span></div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="preprocessor"> if (!(f)) return false;</span></div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  </div>
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<div class="line"><a name="l00043"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_inprocessing.html#a33abe26c0696a328c36dd0aa9f0b0f00"> 43</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_inprocessing.html#a33abe26c0696a328c36dd0aa9f0b0f00">Inprocessing::PresolveLoop</a>(<a class="code" href="structoperations__research_1_1sat_1_1_sat_presolve_options.html">SatPresolveOptions</a> options) {</div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <a class="code" href="class_wall_timer.html">WallTimer</a> <a class="code" href="cp__model__solver_8cc.html#ace0951799e72ee99fc07d5e509bc7cbf">wall_timer</a>;</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <a class="code" href="cp__model__solver_8cc.html#ace0951799e72ee99fc07d5e509bc7cbf">wall_timer</a>.<a class="code" href="class_wall_timer.html#a07aaf1227e4d645f15e0a964f54ef291">Start</a>();</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  </div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> log_info = options.<a class="code" href="structoperations__research_1_1sat_1_1_sat_presolve_options.html#a54320231778412ca00e50eb821c95aa6">log_info</a> || <a class="code" href="vlog__is__on_8h.html#a956152cad330225654d128f35c00efce">VLOG_IS_ON</a>(1);</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> log_round_info = <a class="code" href="vlog__is__on_8h.html#a956152cad330225654d128f35c00efce">VLOG_IS_ON</a>(1);</div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  </div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="comment">// Mainly useful for development.</span></div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keywordtype">double</span> probing_time = 0.0;</div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  </div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="comment">// We currently do the transformations in a given order and restart each time</span></div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="comment">// we did something to make sure that the earlier step cannot srengthen more.</span></div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="comment">// This might not be the best, but it is really good during development phase</span></div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="comment">// to make sure each individual functions is as incremental and as fast as</span></div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="comment">// possible.</span></div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> start_dtime = time_limit_-><a class="code" href="classoperations__research_1_1_time_limit.html#ac7e861414a70fc937d18bc7ca743fc98">GetElapsedDeterministicTime</a>();</div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> stop_dtime = start_dtime + options.<a class="code" href="structoperations__research_1_1sat_1_1_sat_presolve_options.html#afac11ce59af8fa30ab784cfa4fb36297">deterministic_time_limit</a>;</div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keywordflow">while</span> (!time_limit_-><a class="code" href="classoperations__research_1_1_time_limit.html#a810d5f7aaf80cc09cf5a094e20c1aaca">LimitReached</a>() &&</div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  time_limit_-><a class="code" href="classoperations__research_1_1_time_limit.html#ac7e861414a70fc937d18bc7ca743fc98">GetElapsedDeterministicTime</a>() <= stop_dtime) {</div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <a class="code" href="base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b">CHECK_EQ</a>(sat_solver_-><a class="code" href="classoperations__research_1_1sat_1_1_sat_solver.html#ad63c4461a1384629cb99413c6df8b9ca">CurrentDecisionLevel</a>(), 0);</div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keywordflow">if</span> (!<a class="code" href="classoperations__research_1_1sat_1_1_inprocessing.html#a7fefd67efe60192540adcc4bdea29836">LevelZeroPropagate</a>()) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  </div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="comment">// This one is fast since only newly fixed variables are considered.</span></div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  implication_graph_-><a class="code" href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#abcad56047cef75a12528fe99794a6e1e">RemoveFixedVariables</a>();</div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  </div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="comment">// This also prepare the stamping below so that we do that on a DAG and do</span></div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="comment">// not consider potential new implications added by</span></div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="comment">// RemoveFixedAndEquivalentVariables().</span></div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <a class="code" href="sat__inprocessing_8cc.html#a73c06a952919ea45217c5a8ec59c4088">RETURN_IF_FALSE</a>(<a class="code" href="classoperations__research_1_1sat_1_1_inprocessing.html#af933a36985c24ffed84da1ac4f159e43">DetectEquivalencesAndStamp</a>(options.<a class="code" href="structoperations__research_1_1sat_1_1_sat_presolve_options.html#a9251c24a19aaef6f5134a615eff02277">use_transitive_reduction</a>,</div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  log_round_info));</div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  </div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="comment">// TODO(user): This should/could be integrated with the stamping since it</span></div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="comment">// seems better to do just one loop instead of two over all clauses. Because</span></div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="comment">// of memory access. it isn't that clear though.</span></div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <a class="code" href="sat__inprocessing_8cc.html#a73c06a952919ea45217c5a8ec59c4088">RETURN_IF_FALSE</a>(<a class="code" href="classoperations__research_1_1sat_1_1_inprocessing.html#a5641f2b95c6ba972fff06ddd6ff5e29b">RemoveFixedAndEquivalentVariables</a>(log_round_info));</div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <a class="code" href="sat__inprocessing_8cc.html#a73c06a952919ea45217c5a8ec59c4088">RETURN_IF_FALSE</a>(stamping_simplifier_-><a class="code" href="classoperations__research_1_1sat_1_1_stamping_simplifier.html#a1837f97f35b2db520af88985ea7e5666">DoOneRound</a>(log_round_info));</div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  </div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="comment">// We wait for the fix-point to be reached before doing the other</span></div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="comment">// simplifications below.</span></div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keywordflow">if</span> (<a class="code" href="classoperations__research_1_1sat_1_1_inprocessing.html#a55d41aea8582d314b14874b133eb8bcb">MoreFixedVariableToClean</a>() || <a class="code" href="classoperations__research_1_1sat_1_1_inprocessing.html#ae07d2afcdeb4149564918774bb584c17">MoreRedundantVariableToClean</a>() ||</div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  !implication_graph_-><a class="code" href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#ad7144ed926660fe38c0cfbeedbaa8dfc">IsDag</a>()) {</div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keywordflow">continue</span>;</div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  }</div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  </div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <a class="code" href="sat__inprocessing_8cc.html#a73c06a952919ea45217c5a8ec59c4088">RETURN_IF_FALSE</a>(<a class="code" href="classoperations__research_1_1sat_1_1_inprocessing.html#aeb638f5ec6c2dd765d96e06926c4143f">SubsumeAndStrenghtenRound</a>(log_round_info));</div>
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|
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="keywordflow">if</span> (<a class="code" href="classoperations__research_1_1sat_1_1_inprocessing.html#a55d41aea8582d314b14874b133eb8bcb">MoreFixedVariableToClean</a>() || <a class="code" href="classoperations__research_1_1sat_1_1_inprocessing.html#ae07d2afcdeb4149564918774bb584c17">MoreRedundantVariableToClean</a>() ||</div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  !implication_graph_-><a class="code" href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#ad7144ed926660fe38c0cfbeedbaa8dfc">IsDag</a>()) {</div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keywordflow">continue</span>;</div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  }</div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  </div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="comment">// TODO(user): Combine the two? this way we don't create a full literal <-></span></div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="comment">// clause graph twice. It might make sense to reach the BCE fix point which</span></div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="comment">// is unique before each variable elimination.</span></div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  blocked_clause_simplifier_-><a class="code" href="classoperations__research_1_1sat_1_1_blocked_clause_simplifier.html#ad30a040fd97f2cb710bb44c9f048a341">DoOneRound</a>(log_round_info);</div>
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|
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <a class="code" href="sat__inprocessing_8cc.html#a73c06a952919ea45217c5a8ec59c4088">RETURN_IF_FALSE</a>(bounded_variable_elimination_-><a class="code" href="classoperations__research_1_1sat_1_1_bounded_variable_elimination.html#a1837f97f35b2db520af88985ea7e5666">DoOneRound</a>(log_round_info));</div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <a class="code" href="sat__inprocessing_8cc.html#a73c06a952919ea45217c5a8ec59c4088">RETURN_IF_FALSE</a>(<a class="code" href="classoperations__research_1_1sat_1_1_inprocessing.html#a7fefd67efe60192540adcc4bdea29836">LevelZeroPropagate</a>());</div>
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|
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  </div>
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<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="comment">// Probing.</span></div>
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<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> saved_wtime = <a class="code" href="cp__model__solver_8cc.html#ace0951799e72ee99fc07d5e509bc7cbf">wall_timer</a>.<a class="code" href="class_wall_timer.html#aec56fe080959ecebec3feaed9dafde84">Get</a>();</div>
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|
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> time_left =</div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  stop_dtime - time_limit_-><a class="code" href="classoperations__research_1_1_time_limit.html#ac7e861414a70fc937d18bc7ca743fc98">GetElapsedDeterministicTime</a>();</div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keywordflow">if</span> (time_left <= 0) <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <a class="code" href="structoperations__research_1_1sat_1_1_probing_options.html">ProbingOptions</a> probing_options;</div>
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<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  probing_options.<a class="code" href="structoperations__research_1_1sat_1_1_probing_options.html#a54320231778412ca00e50eb821c95aa6">log_info</a> = log_round_info;</div>
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|
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  probing_options.<a class="code" href="structoperations__research_1_1sat_1_1_probing_options.html#a4f572c68b7bf3aac70b3f5292398ff7b">deterministic_limit</a> = time_left;</div>
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|
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  probing_options.<a class="code" href="structoperations__research_1_1sat_1_1_probing_options.html#a9d4ed6726cbb0ec29c0d62faec4b6405">extract_binary_clauses</a> =</div>
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  options.<a class="code" href="structoperations__research_1_1sat_1_1_sat_presolve_options.html#ac68dd5a27fd973b215de47442bacf1ac">extract_binary_clauses_in_probing</a>;</div>
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|
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <a class="code" href="sat__inprocessing_8cc.html#a73c06a952919ea45217c5a8ec59c4088">RETURN_IF_FALSE</a>(<a class="code" href="namespaceoperations__research_1_1sat.html#a865df3eeca0b96bf7fda22b016b80bc2">FailedLiteralProbingRound</a>(probing_options, model_));</div>
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|
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  probing_time += <a class="code" href="cp__model__solver_8cc.html#ace0951799e72ee99fc07d5e509bc7cbf">wall_timer</a>.<a class="code" href="class_wall_timer.html#aec56fe080959ecebec3feaed9dafde84">Get</a>() - saved_wtime;</div>
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|
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  </div>
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<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keywordflow">if</span> (<a class="code" href="classoperations__research_1_1sat_1_1_inprocessing.html#a55d41aea8582d314b14874b133eb8bcb">MoreFixedVariableToClean</a>() || <a class="code" href="classoperations__research_1_1sat_1_1_inprocessing.html#ae07d2afcdeb4149564918774bb584c17">MoreRedundantVariableToClean</a>() ||</div>
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|
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  !implication_graph_-><a class="code" href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#ad7144ed926660fe38c0cfbeedbaa8dfc">IsDag</a>()) {</div>
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|
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keywordflow">continue</span>;</div>
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<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  }</div>
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<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  </div>
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<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  }</div>
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<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  </div>
|
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<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <span class="comment">// TODO(user): Maintain the total number of literals in the watched clauses.</span></div>
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|
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="keywordflow">if</span> (!<a class="code" href="classoperations__research_1_1sat_1_1_inprocessing.html#a7fefd67efe60192540adcc4bdea29836">LevelZeroPropagate</a>()) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  </div>
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<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <a class="code" href="base_2logging_8h.html#a09f7d88282cf92c9f231270ac113e5c6">LOG_IF</a>(<a class="code" href="log__severity_8h.html#ab4a2cbab234914b320b7fae11b6e8cb9">INFO</a>, log_info)</div>
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<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  << <span class="stringliteral">"Presolve."</span></div>
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<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  << <span class="stringliteral">" num_fixed: "</span> << trail_-><a class="code" href="classoperations__research_1_1sat_1_1_trail.html#a8ef12397d1682615bc3108c397734179">Index</a>()</div>
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|
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  << <span class="stringliteral">" num_redundant: "</span> << implication_graph_-><a class="code" href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#a193e09b22c8bb9f6168375efea6fe6ba">num_redundant_literals</a>() / 2</div>
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|
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  << <span class="stringliteral">"/"</span> << sat_solver_-><a class="code" href="classoperations__research_1_1sat_1_1_sat_solver.html#a9d3beb2afe4ae647674b054bf29290e2">NumVariables</a>()</div>
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|
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  << <span class="stringliteral">" num_implications: "</span> << implication_graph_-><a class="code" href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#a6dcddbd6c9e8a05ca2170a13c9ff8cbb">num_implications</a>()</div>
|
|
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  << <span class="stringliteral">" num_watched_clauses: "</span> << clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#a90d7f1e5714fb18a623b54a9148d636d">num_watched_clauses</a>()</div>
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|
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  << <span class="stringliteral">" dtime: "</span> << time_limit_-><a class="code" href="classoperations__research_1_1_time_limit.html#ac7e861414a70fc937d18bc7ca743fc98">GetElapsedDeterministicTime</a>() - start_dtime</div>
|
|
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  << <span class="stringliteral">"/"</span> << options.<a class="code" href="structoperations__research_1_1sat_1_1_sat_presolve_options.html#afac11ce59af8fa30ab784cfa4fb36297">deterministic_time_limit</a></div>
|
|
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  << <span class="stringliteral">" wtime: "</span> << <a class="code" href="cp__model__solver_8cc.html#ace0951799e72ee99fc07d5e509bc7cbf">wall_timer</a>.<a class="code" href="class_wall_timer.html#aec56fe080959ecebec3feaed9dafde84">Get</a>()</div>
|
|
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  << <span class="stringliteral">" non-probing time: "</span> << (<a class="code" href="cp__model__solver_8cc.html#ace0951799e72ee99fc07d5e509bc7cbf">wall_timer</a>.<a class="code" href="class_wall_timer.html#aec56fe080959ecebec3feaed9dafde84">Get</a>() - probing_time);</div>
|
|
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="keywordflow">return</span> <span class="keyword">true</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>  </div>
|
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<div class="line"><a name="l00138"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_inprocessing.html#a2e5437cb35da63545f954a80536023e0"> 138</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_inprocessing.html#a2e5437cb35da63545f954a80536023e0">Inprocessing::InprocessingRound</a>() {</div>
|
|
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <a class="code" href="class_wall_timer.html">WallTimer</a> <a class="code" href="cp__model__solver_8cc.html#ace0951799e72ee99fc07d5e509bc7cbf">wall_timer</a>;</div>
|
|
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <a class="code" href="cp__model__solver_8cc.html#ace0951799e72ee99fc07d5e509bc7cbf">wall_timer</a>.<a class="code" href="class_wall_timer.html#a07aaf1227e4d645f15e0a964f54ef291">Start</a>();</div>
|
|
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  </div>
|
|
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> log_info = <span class="keyword">true</span> || <a class="code" href="vlog__is__on_8h.html#a956152cad330225654d128f35c00efce">VLOG_IS_ON</a>(1);</div>
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|
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> log_round_info = <a class="code" href="vlog__is__on_8h.html#a956152cad330225654d128f35c00efce">VLOG_IS_ON</a>(1);</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>  <span class="comment">// Mainly useful for development.</span></div>
|
|
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <span class="keywordtype">double</span> probing_time = 0.0;</div>
|
|
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> start_dtime = time_limit_-><a class="code" href="classoperations__research_1_1_time_limit.html#ac7e861414a70fc937d18bc7ca743fc98">GetElapsedDeterministicTime</a>();</div>
|
|
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  </div>
|
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<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <span class="comment">// Try to spend a given ratio of time in the inprocessing.</span></div>
|
|
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  <span class="keywordflow">if</span> (total_dtime_ > 0.1 * start_dtime) <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  </div>
|
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<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  <span class="comment">// We make sure we do not "pollute" the current saved polarities. We will</span></div>
|
|
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  <span class="comment">// restore them at the end.</span></div>
|
|
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="comment">//</span></div>
|
|
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <span class="comment">// TODO(user): We should probably also disable the variable/clauses activity</span></div>
|
|
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="comment">// updates.</span></div>
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<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  decision_policy_-><a class="code" href="classoperations__research_1_1sat_1_1_sat_decision_policy.html#a9db2d9ca018c68d3f84ee946e3603886">MaybeEnablePhaseSaving</a>(<span class="comment">/*save_phase=*/</span><span class="keyword">false</span>);</div>
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<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  </div>
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<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <a class="code" href="sat__inprocessing_8cc.html#a73c06a952919ea45217c5a8ec59c4088">RETURN_IF_FALSE</a>(<a class="code" href="classoperations__research_1_1sat_1_1_inprocessing.html#af933a36985c24ffed84da1ac4f159e43">DetectEquivalencesAndStamp</a>(<span class="keyword">true</span>, log_round_info));</div>
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|
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <a class="code" href="sat__inprocessing_8cc.html#a73c06a952919ea45217c5a8ec59c4088">RETURN_IF_FALSE</a>(<a class="code" href="classoperations__research_1_1sat_1_1_inprocessing.html#a5641f2b95c6ba972fff06ddd6ff5e29b">RemoveFixedAndEquivalentVariables</a>(log_round_info));</div>
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|
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <a class="code" href="sat__inprocessing_8cc.html#a73c06a952919ea45217c5a8ec59c4088">RETURN_IF_FALSE</a>(<a class="code" href="classoperations__research_1_1sat_1_1_inprocessing.html#a7fefd67efe60192540adcc4bdea29836">LevelZeroPropagate</a>());</div>
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<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  </div>
|
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<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="comment">// Probing.</span></div>
|
|
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> saved_wtime = <a class="code" href="cp__model__solver_8cc.html#ace0951799e72ee99fc07d5e509bc7cbf">wall_timer</a>.<a class="code" href="class_wall_timer.html#aec56fe080959ecebec3feaed9dafde84">Get</a>();</div>
|
|
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <a class="code" href="structoperations__research_1_1sat_1_1_probing_options.html">ProbingOptions</a> probing_options;</div>
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<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  probing_options.<a class="code" href="structoperations__research_1_1sat_1_1_probing_options.html#a54320231778412ca00e50eb821c95aa6">log_info</a> = log_round_info;</div>
|
|
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  probing_options.<a class="code" href="structoperations__research_1_1sat_1_1_probing_options.html#a4f572c68b7bf3aac70b3f5292398ff7b">deterministic_limit</a> = 5;</div>
|
|
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  probing_options.<a class="code" href="structoperations__research_1_1sat_1_1_probing_options.html#a9d4ed6726cbb0ec29c0d62faec4b6405">extract_binary_clauses</a> = <span class="keyword">true</span>;</div>
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|
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <a class="code" href="sat__inprocessing_8cc.html#a73c06a952919ea45217c5a8ec59c4088">RETURN_IF_FALSE</a>(<a class="code" href="namespaceoperations__research_1_1sat.html#a865df3eeca0b96bf7fda22b016b80bc2">FailedLiteralProbingRound</a>(probing_options, model_));</div>
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|
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  probing_time += <a class="code" href="cp__model__solver_8cc.html#ace0951799e72ee99fc07d5e509bc7cbf">wall_timer</a>.<a class="code" href="class_wall_timer.html#aec56fe080959ecebec3feaed9dafde84">Get</a>() - saved_wtime;</div>
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|
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  </div>
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<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  <a class="code" href="sat__inprocessing_8cc.html#a73c06a952919ea45217c5a8ec59c4088">RETURN_IF_FALSE</a>(<a class="code" href="classoperations__research_1_1sat_1_1_inprocessing.html#af933a36985c24ffed84da1ac4f159e43">DetectEquivalencesAndStamp</a>(<span class="keyword">true</span>, log_round_info));</div>
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|
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  <a class="code" href="sat__inprocessing_8cc.html#a73c06a952919ea45217c5a8ec59c4088">RETURN_IF_FALSE</a>(<a class="code" href="classoperations__research_1_1sat_1_1_inprocessing.html#a5641f2b95c6ba972fff06ddd6ff5e29b">RemoveFixedAndEquivalentVariables</a>(log_round_info));</div>
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|
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <a class="code" href="sat__inprocessing_8cc.html#a73c06a952919ea45217c5a8ec59c4088">RETURN_IF_FALSE</a>(<a class="code" href="classoperations__research_1_1sat_1_1_inprocessing.html#a7fefd67efe60192540adcc4bdea29836">LevelZeroPropagate</a>());</div>
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|
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  </div>
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<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <a class="code" href="sat__inprocessing_8cc.html#a73c06a952919ea45217c5a8ec59c4088">RETURN_IF_FALSE</a>(stamping_simplifier_-><a class="code" href="classoperations__research_1_1sat_1_1_stamping_simplifier.html#a1837f97f35b2db520af88985ea7e5666">DoOneRound</a>(log_round_info));</div>
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<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <a class="code" href="sat__inprocessing_8cc.html#a73c06a952919ea45217c5a8ec59c4088">RETURN_IF_FALSE</a>(<a class="code" href="classoperations__research_1_1sat_1_1_inprocessing.html#a5641f2b95c6ba972fff06ddd6ff5e29b">RemoveFixedAndEquivalentVariables</a>(log_round_info));</div>
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<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  </div>
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<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="comment">// TODO(user): Add a small wrapper function to time this.</span></div>
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<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <a class="code" href="sat__inprocessing_8cc.html#a73c06a952919ea45217c5a8ec59c4088">RETURN_IF_FALSE</a>(<a class="code" href="classoperations__research_1_1sat_1_1_inprocessing.html#a7fefd67efe60192540adcc4bdea29836">LevelZeroPropagate</a>());</div>
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<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  sat_solver_-><a class="code" href="classoperations__research_1_1sat_1_1_sat_solver.html#a8f1f9030283b2fa93b2353ab260ebe1e">MinimizeSomeClauses</a>(<span class="comment">/*decisions_budget=*/</span>1000);</div>
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<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  <a class="code" href="sat__inprocessing_8cc.html#a73c06a952919ea45217c5a8ec59c4088">RETURN_IF_FALSE</a>(<a class="code" href="classoperations__research_1_1sat_1_1_inprocessing.html#a7fefd67efe60192540adcc4bdea29836">LevelZeroPropagate</a>());</div>
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<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  </div>
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<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  <a class="code" href="sat__inprocessing_8cc.html#a73c06a952919ea45217c5a8ec59c4088">RETURN_IF_FALSE</a>(<a class="code" href="classoperations__research_1_1sat_1_1_inprocessing.html#aeb638f5ec6c2dd765d96e06926c4143f">SubsumeAndStrenghtenRound</a>(log_round_info));</div>
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<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  </div>
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<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  <a class="code" href="sat__inprocessing_8cc.html#a73c06a952919ea45217c5a8ec59c4088">RETURN_IF_FALSE</a>(<a class="code" href="classoperations__research_1_1sat_1_1_inprocessing.html#a5641f2b95c6ba972fff06ddd6ff5e29b">RemoveFixedAndEquivalentVariables</a>(log_round_info));</div>
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<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  blocked_clause_simplifier_-><a class="code" href="classoperations__research_1_1sat_1_1_blocked_clause_simplifier.html#ad30a040fd97f2cb710bb44c9f048a341">DoOneRound</a>(log_round_info);</div>
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<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <a class="code" href="sat__inprocessing_8cc.html#a73c06a952919ea45217c5a8ec59c4088">RETURN_IF_FALSE</a>(bounded_variable_elimination_-><a class="code" href="classoperations__research_1_1sat_1_1_bounded_variable_elimination.html#a1837f97f35b2db520af88985ea7e5666">DoOneRound</a>(log_round_info));</div>
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<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  <a class="code" href="sat__inprocessing_8cc.html#a73c06a952919ea45217c5a8ec59c4088">RETURN_IF_FALSE</a>(<a class="code" href="classoperations__research_1_1sat_1_1_inprocessing.html#a7fefd67efe60192540adcc4bdea29836">LevelZeroPropagate</a>());</div>
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<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  </div>
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<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  total_dtime_ += time_limit_-><a class="code" href="classoperations__research_1_1_time_limit.html#ac7e861414a70fc937d18bc7ca743fc98">GetElapsedDeterministicTime</a>() - start_dtime;</div>
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<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  <a class="code" href="base_2logging_8h.html#a09f7d88282cf92c9f231270ac113e5c6">LOG_IF</a>(<a class="code" href="log__severity_8h.html#ab4a2cbab234914b320b7fae11b6e8cb9">INFO</a>, log_info)</div>
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<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  << <span class="stringliteral">"Presolve."</span></div>
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<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  << <span class="stringliteral">" num_fixed: "</span> << trail_-><a class="code" href="classoperations__research_1_1sat_1_1_trail.html#a8ef12397d1682615bc3108c397734179">Index</a>()</div>
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<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  << <span class="stringliteral">" num_redundant: "</span> << implication_graph_-><a class="code" href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#a193e09b22c8bb9f6168375efea6fe6ba">num_redundant_literals</a>() / 2</div>
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<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  << <span class="stringliteral">"/"</span> << sat_solver_-><a class="code" href="classoperations__research_1_1sat_1_1_sat_solver.html#a9d3beb2afe4ae647674b054bf29290e2">NumVariables</a>()</div>
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<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  << <span class="stringliteral">" num_implications: "</span> << implication_graph_-><a class="code" href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#a6dcddbd6c9e8a05ca2170a13c9ff8cbb">num_implications</a>()</div>
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<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  << <span class="stringliteral">" num_watched_clauses: "</span> << clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#a90d7f1e5714fb18a623b54a9148d636d">num_watched_clauses</a>()</div>
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<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  << <span class="stringliteral">" dtime: "</span> << time_limit_-><a class="code" href="classoperations__research_1_1_time_limit.html#ac7e861414a70fc937d18bc7ca743fc98">GetElapsedDeterministicTime</a>() - start_dtime</div>
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<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  << <span class="stringliteral">" wtime: "</span> << <a class="code" href="cp__model__solver_8cc.html#ace0951799e72ee99fc07d5e509bc7cbf">wall_timer</a>.<a class="code" href="class_wall_timer.html#aec56fe080959ecebec3feaed9dafde84">Get</a>()</div>
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<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  << <span class="stringliteral">" non-probing time: "</span> << (<a class="code" href="cp__model__solver_8cc.html#ace0951799e72ee99fc07d5e509bc7cbf">wall_timer</a>.<a class="code" href="class_wall_timer.html#aec56fe080959ecebec3feaed9dafde84">Get</a>() - probing_time);</div>
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<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  </div>
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<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  decision_policy_-><a class="code" href="classoperations__research_1_1sat_1_1_sat_decision_policy.html#a9db2d9ca018c68d3f84ee946e3603886">MaybeEnablePhaseSaving</a>(<span class="comment">/*save_phase=*/</span><span class="keyword">true</span>);</div>
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<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00205"></a><span class="lineno"> 205</span> }</div>
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<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  </div>
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<div class="line"><a name="l00207"></a><span class="lineno"> 207</span> <span class="preprocessor">#undef RETURN_IF_FALSE</span></div>
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<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  </div>
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<div class="line"><a name="l00209"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_inprocessing.html#a55d41aea8582d314b14874b133eb8bcb"> 209</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_inprocessing.html#a55d41aea8582d314b14874b133eb8bcb">Inprocessing::MoreFixedVariableToClean</a>()<span class="keyword"> const </span>{</div>
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<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  <span class="keyword">const</span> <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> new_num_fixed_variables = trail_-><a class="code" href="classoperations__research_1_1sat_1_1_trail.html#a8ef12397d1682615bc3108c397734179">Index</a>();</div>
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<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  <span class="keywordflow">return</span> last_num_fixed_variables_ < new_num_fixed_variables;</div>
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<div class="line"><a name="l00212"></a><span class="lineno"> 212</span> }</div>
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<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  </div>
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<div class="line"><a name="l00214"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_inprocessing.html#ae07d2afcdeb4149564918774bb584c17"> 214</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_inprocessing.html#ae07d2afcdeb4149564918774bb584c17">Inprocessing::MoreRedundantVariableToClean</a>()<span class="keyword"> const </span>{</div>
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<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  <span class="keyword">const</span> <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> new_num_redundant_literals =</div>
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<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  implication_graph_-><a class="code" href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#a193e09b22c8bb9f6168375efea6fe6ba">num_redundant_literals</a>();</div>
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<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <span class="keywordflow">return</span> last_num_redundant_literals_ < new_num_redundant_literals;</div>
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<div class="line"><a name="l00218"></a><span class="lineno"> 218</span> }</div>
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<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  </div>
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<div class="line"><a name="l00220"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_inprocessing.html#a7fefd67efe60192540adcc4bdea29836"> 220</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_inprocessing.html#a7fefd67efe60192540adcc4bdea29836">Inprocessing::LevelZeroPropagate</a>() {</div>
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<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  <a class="code" href="base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b">CHECK_EQ</a>(sat_solver_-><a class="code" href="classoperations__research_1_1sat_1_1_sat_solver.html#ad63c4461a1384629cb99413c6df8b9ca">CurrentDecisionLevel</a>(), 0);</div>
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<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#a56cba28a88a7cffa362a362fdce24dc3">AttachAllClauses</a>();</div>
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<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  <span class="keywordflow">return</span> sat_solver_-><a class="code" href="classoperations__research_1_1sat_1_1_sat_solver.html#adadc001cbdc7263b106fc5886b60ff39">Propagate</a>();</div>
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<div class="line"><a name="l00224"></a><span class="lineno"> 224</span> }</div>
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<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  </div>
|
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<div class="line"><a name="l00226"></a><span class="lineno"> 226</span> <span class="comment">// It make sense to do the pre-stamping right after the equivalence detection</span></div>
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|
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span> <span class="comment">// since it needs a DAG and can detect extra failed literal.</span></div>
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|
<div class="line"><a name="l00228"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_inprocessing.html#af933a36985c24ffed84da1ac4f159e43"> 228</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_inprocessing.html#af933a36985c24ffed84da1ac4f159e43">Inprocessing::DetectEquivalencesAndStamp</a>(<span class="keywordtype">bool</span> use_transitive_reduction,</div>
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<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  <span class="keywordtype">bool</span> log_info) {</div>
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<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  <span class="keywordflow">if</span> (!<a class="code" href="classoperations__research_1_1sat_1_1_inprocessing.html#a7fefd67efe60192540adcc4bdea29836">LevelZeroPropagate</a>()) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  implication_graph_-><a class="code" href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#abcad56047cef75a12528fe99794a6e1e">RemoveFixedVariables</a>();</div>
|
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<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  <span class="keywordflow">if</span> (!implication_graph_-><a class="code" href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#ad7144ed926660fe38c0cfbeedbaa8dfc">IsDag</a>()) {</div>
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<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  <span class="comment">// TODO(user): consider doing the transitive reduction after each SCC.</span></div>
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<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  <span class="comment">// It might be slow but we could try to make it more incremental to</span></div>
|
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<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  <span class="comment">// compensate and it should allow further reduction.</span></div>
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<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  <span class="keywordflow">if</span> (!implication_graph_-><a class="code" href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#aac261e221628d6a51be7243563659929">DetectEquivalences</a>(log_info)) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  <span class="keywordflow">if</span> (!<a class="code" href="classoperations__research_1_1sat_1_1_inprocessing.html#a7fefd67efe60192540adcc4bdea29836">LevelZeroPropagate</a>()) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  <span class="keywordflow">if</span> (use_transitive_reduction) {</div>
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<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  <span class="keywordflow">if</span> (!implication_graph_-><a class="code" href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#a29218ade45d7df87f01459565526cfe2">ComputeTransitiveReduction</a>(log_info)) {</div>
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<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  }</div>
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<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  <span class="keywordflow">if</span> (!<a class="code" href="classoperations__research_1_1sat_1_1_inprocessing.html#a7fefd67efe60192540adcc4bdea29836">LevelZeroPropagate</a>()) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  }</div>
|
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<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  }</div>
|
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<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  </div>
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<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  <span class="keywordflow">if</span> (!stamping_simplifier_-><a class="code" href="classoperations__research_1_1sat_1_1_stamping_simplifier.html#a23f1e3b69e90585b8c746ecb2c829d16">ComputeStampsForNextRound</a>(log_info)) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  <span class="keywordflow">return</span> <a class="code" href="classoperations__research_1_1sat_1_1_inprocessing.html#a7fefd67efe60192540adcc4bdea29836">LevelZeroPropagate</a>();</div>
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<div class="line"><a name="l00248"></a><span class="lineno"> 248</span> }</div>
|
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<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  </div>
|
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<div class="line"><a name="l00250"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_inprocessing.html#a5641f2b95c6ba972fff06ddd6ff5e29b"> 250</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_inprocessing.html#a5641f2b95c6ba972fff06ddd6ff5e29b">Inprocessing::RemoveFixedAndEquivalentVariables</a>(<span class="keywordtype">bool</span> log_info) {</div>
|
|
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  <span class="comment">// Preconditions.</span></div>
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<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  <span class="comment">//</span></div>
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<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  <span class="comment">// TODO(user): The level zero is required because we remove fixed variables</span></div>
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<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  <span class="comment">// but if we split this into two functions, we could rewrite clause at any</span></div>
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<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  <span class="comment">// level.</span></div>
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<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  <a class="code" href="base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b">CHECK_EQ</a>(sat_solver_-><a class="code" href="classoperations__research_1_1sat_1_1_sat_solver.html#ad63c4461a1384629cb99413c6df8b9ca">CurrentDecisionLevel</a>(), 0);</div>
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<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  <span class="keywordflow">if</span> (!<a class="code" href="classoperations__research_1_1sat_1_1_inprocessing.html#a7fefd67efe60192540adcc4bdea29836">LevelZeroPropagate</a>()) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  </div>
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<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  <span class="comment">// Test if some work is needed.</span></div>
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<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  <span class="comment">//</span></div>
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<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  <span class="comment">// TODO(user): If only new fixed variables are there, we can use a faster</span></div>
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<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  <span class="comment">// function. We should also merge the code with the deletion code in</span></div>
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<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  <span class="comment">// sat_solver_.cc, but that require some refactoring of the dependence between</span></div>
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<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  <span class="comment">// files.</span></div>
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<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  <span class="keyword">const</span> <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> new_num_redundant_literals =</div>
|
|
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  implication_graph_-><a class="code" href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#a193e09b22c8bb9f6168375efea6fe6ba">num_redundant_literals</a>();</div>
|
|
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  <span class="keyword">const</span> <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> new_num_fixed_variables = trail_-><a class="code" href="classoperations__research_1_1sat_1_1_trail.html#a8ef12397d1682615bc3108c397734179">Index</a>();</div>
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<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  <span class="keywordflow">if</span> (last_num_redundant_literals_ == new_num_redundant_literals &&</div>
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<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  last_num_fixed_variables_ == new_num_fixed_variables) {</div>
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<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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|
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  }</div>
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<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  last_num_fixed_variables_ = new_num_fixed_variables;</div>
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<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  last_num_redundant_literals_ = new_num_redundant_literals;</div>
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<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  </div>
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<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  <span class="comment">// Start the round.</span></div>
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<div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  <a class="code" href="class_wall_timer.html">WallTimer</a> <a class="code" href="cp__model__solver_8cc.html#ace0951799e72ee99fc07d5e509bc7cbf">wall_timer</a>;</div>
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<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  <a class="code" href="cp__model__solver_8cc.html#ace0951799e72ee99fc07d5e509bc7cbf">wall_timer</a>.<a class="code" href="class_wall_timer.html#a07aaf1227e4d645f15e0a964f54ef291">Start</a>();</div>
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<div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  </div>
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<div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> num_removed_literals = 0;</div>
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<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> num_inspected_literals = 0;</div>
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<div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  </div>
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<div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  <span class="comment">// We need this temporary vector for the DRAT proof settings, otherwise</span></div>
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<div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  <span class="comment">// we could just have done an in-place transformation.</span></div>
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<div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  std::vector<Literal> new_clause;</div>
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<div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  </div>
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<div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  <span class="comment">// Used to mark clause literals.</span></div>
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<div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> num_literals(sat_solver_-><a class="code" href="classoperations__research_1_1sat_1_1_sat_solver.html#a9d3beb2afe4ae647674b054bf29290e2">NumVariables</a>() * 2);</div>
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<div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  <a class="code" href="classabsl_1_1_strong_vector.html">absl::StrongVector<LiteralIndex, bool></a> marked(num_literals, <span class="keyword">false</span>);</div>
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<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  </div>
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<div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#ae234022ee7c496416290d1946f56e1ad">DeleteRemovedClauses</a>();</div>
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<div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#a38c7c4ca12035b254d9497a401606e0c">DetachAllClauses</a>();</div>
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<div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  <span class="keywordflow">for</span> (<a class="code" href="classoperations__research_1_1sat_1_1_sat_clause.html">SatClause</a>* clause : clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#a0569d77056e622964bd02dd901950ede">AllClausesInCreationOrder</a>()) {</div>
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<div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  <span class="keywordtype">bool</span> removed = <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  <span class="keywordtype">bool</span> need_rewrite = <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  </div>
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<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  <span class="comment">// We first do a loop to see if there is anything to do.</span></div>
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<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <a class="code" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a> l : clause->AsSpan()) {</div>
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<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  <span class="keywordflow">if</span> (assignment_.<a class="code" href="classoperations__research_1_1sat_1_1_variables_assignment.html#a5300129913f51dcb0b1c531e3248490e">LiteralIsTrue</a>(l)) {</div>
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<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  <span class="comment">// TODO(user): we should output literal to the proof right away,</span></div>
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<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  <span class="comment">// currently if we remove clauses before fixing literal the proof is</span></div>
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<div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  <span class="comment">// wrong.</span></div>
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<div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  <span class="keywordflow">if</span> (!clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#a0ddf4dc22639ee58f75985d875d1fd2d">InprocessingFixLiteral</a>(l)) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00303"></a><span class="lineno"> 303</span>  clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#a287676c504a640a5569710d352ef6585">InprocessingRemoveClause</a>(clause);</div>
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<div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  num_removed_literals += clause->size();</div>
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<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  removed = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  }</div>
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<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  <span class="keywordflow">if</span> (assignment_.<a class="code" href="classoperations__research_1_1sat_1_1_variables_assignment.html#acfd1646011e643f58fd7dc66d9cc90a5">LiteralIsFalse</a>(l) || implication_graph_-><a class="code" href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#a92844929b07caef45924b8c5e3a5a05c">IsRedundant</a>(l)) {</div>
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<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  need_rewrite = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  }</div>
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<div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  }</div>
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<div class="line"><a name="l00313"></a><span class="lineno"> 313</span>  </div>
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<div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  num_inspected_literals += clause->size();</div>
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<div class="line"><a name="l00315"></a><span class="lineno"> 315</span>  <span class="keywordflow">if</span> (removed || !need_rewrite) <span class="keywordflow">continue</span>;</div>
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<div class="line"><a name="l00316"></a><span class="lineno"> 316</span>  num_inspected_literals += clause->size();</div>
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<div class="line"><a name="l00317"></a><span class="lineno"> 317</span>  </div>
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<div class="line"><a name="l00318"></a><span class="lineno"> 318</span>  <span class="comment">// Rewrite the clause.</span></div>
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<div class="line"><a name="l00319"></a><span class="lineno"> 319</span>  new_clause.clear();</div>
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<div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <a class="code" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a> l : clause->AsSpan()) {</div>
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<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  <span class="keyword">const</span> <a class="code" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a> r = implication_graph_-><a class="code" href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#a6fac58ca16fd746d7488a0a97f6965bd">RepresentativeOf</a>(l);</div>
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<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  <span class="keywordflow">if</span> (marked[r.<a class="code" href="classoperations__research_1_1sat_1_1_literal.html#a4a11c7c4d7706c09de5e18707c3b5c62">Index</a>()] || assignment_.<a class="code" href="classoperations__research_1_1sat_1_1_variables_assignment.html#acfd1646011e643f58fd7dc66d9cc90a5">LiteralIsFalse</a>(r)) {</div>
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<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  <span class="keywordflow">continue</span>;</div>
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<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  }</div>
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<div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  <span class="keywordflow">if</span> (marked[r.<a class="code" href="classoperations__research_1_1sat_1_1_literal.html#a239e1315c4e975a35537790ba0d913a7">NegatedIndex</a>()] || assignment_.<a class="code" href="classoperations__research_1_1sat_1_1_variables_assignment.html#a5300129913f51dcb0b1c531e3248490e">LiteralIsTrue</a>(r)) {</div>
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<div class="line"><a name="l00326"></a><span class="lineno"> 326</span>  clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#a287676c504a640a5569710d352ef6585">InprocessingRemoveClause</a>(clause);</div>
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|
<div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  num_removed_literals += clause->size();</div>
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|
<div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  removed = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  }</div>
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<div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  marked[r.<a class="code" href="classoperations__research_1_1sat_1_1_literal.html#a4a11c7c4d7706c09de5e18707c3b5c62">Index</a>()] = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00332"></a><span class="lineno"> 332</span>  new_clause.<a class="code" href="classabsl_1_1_strong_vector.html#a9263000d449fdccb6cb70b303063e60b">push_back</a>(r);</div>
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<div class="line"><a name="l00333"></a><span class="lineno"> 333</span>  }</div>
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<div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  </div>
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<div class="line"><a name="l00335"></a><span class="lineno"> 335</span>  <span class="comment">// Restore marked.</span></div>
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<div class="line"><a name="l00336"></a><span class="lineno"> 336</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <a class="code" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a> l : new_clause) marked[l.Index()] = <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00337"></a><span class="lineno"> 337</span>  <span class="keywordflow">if</span> (removed) <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l00338"></a><span class="lineno"> 338</span>  </div>
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<div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  num_removed_literals += clause-><a class="code" href="classabsl_1_1_strong_vector.html#a60304b65bf89363bcc3165d3cde67f86">size</a>() - new_clause.size();</div>
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<div class="line"><a name="l00340"></a><span class="lineno"> 340</span>  <span class="keywordflow">if</span> (!clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#ab17b31190c5ab58a1334139848335283">InprocessingRewriteClause</a>(clause, new_clause)) {</div>
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|
<div class="line"><a name="l00341"></a><span class="lineno"> 341</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00342"></a><span class="lineno"> 342</span>  }</div>
|
|
<div class="line"><a name="l00343"></a><span class="lineno"> 343</span>  }</div>
|
|
<div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  </div>
|
|
<div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  <span class="comment">// TODO(user): find a way to auto-tune that after a run on borg...</span></div>
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|
<div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> dtime = <span class="keyword">static_cast<</span><span class="keywordtype">double</span><span class="keyword">></span>(num_inspected_literals) * 1e-8;</div>
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<div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  time_limit_-><a class="code" href="classoperations__research_1_1_time_limit.html#af90cfd1fc238433fc303ee28c5914eb9">AdvanceDeterministicTime</a>(dtime);</div>
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|
<div class="line"><a name="l00348"></a><span class="lineno"> 348</span>  <a class="code" href="base_2logging_8h.html#a09f7d88282cf92c9f231270ac113e5c6">LOG_IF</a>(<a class="code" href="log__severity_8h.html#ab4a2cbab234914b320b7fae11b6e8cb9">INFO</a>, log_info) << <span class="stringliteral">"Cleanup. num_removed_literals: "</span></div>
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<div class="line"><a name="l00349"></a><span class="lineno"> 349</span>  << num_removed_literals << <span class="stringliteral">" dtime: "</span> << dtime</div>
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<div class="line"><a name="l00350"></a><span class="lineno"> 350</span>  << <span class="stringliteral">" wtime: "</span> << <a class="code" href="cp__model__solver_8cc.html#ace0951799e72ee99fc07d5e509bc7cbf">wall_timer</a>.<a class="code" href="class_wall_timer.html#aec56fe080959ecebec3feaed9dafde84">Get</a>();</div>
|
|
<div class="line"><a name="l00351"></a><span class="lineno"> 351</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00352"></a><span class="lineno"> 352</span> }</div>
|
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<div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  </div>
|
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<div class="line"><a name="l00354"></a><span class="lineno"> 354</span> <span class="comment">// TODO(user): Use better work limits, see SAT09.CRAFTED.ramseycube.Q3inK12</span></div>
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<div class="line"><a name="l00355"></a><span class="lineno"> 355</span> <span class="comment">//</span></div>
|
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<div class="line"><a name="l00356"></a><span class="lineno"> 356</span> <span class="comment">// TODO(user): Be more incremental, each time a clause is added/reduced track</span></div>
|
|
<div class="line"><a name="l00357"></a><span class="lineno"> 357</span> <span class="comment">// which literal are impacted? Also try to do orthogonal reductions from one</span></div>
|
|
<div class="line"><a name="l00358"></a><span class="lineno"> 358</span> <span class="comment">// round to the next.</span></div>
|
|
<div class="line"><a name="l00359"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_inprocessing.html#aeb638f5ec6c2dd765d96e06926c4143f"> 359</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_inprocessing.html#aeb638f5ec6c2dd765d96e06926c4143f">Inprocessing::SubsumeAndStrenghtenRound</a>(<span class="keywordtype">bool</span> log_info) {</div>
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<div class="line"><a name="l00360"></a><span class="lineno"> 360</span>  <a class="code" href="class_wall_timer.html">WallTimer</a> <a class="code" href="cp__model__solver_8cc.html#ace0951799e72ee99fc07d5e509bc7cbf">wall_timer</a>;</div>
|
|
<div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  <a class="code" href="cp__model__solver_8cc.html#ace0951799e72ee99fc07d5e509bc7cbf">wall_timer</a>.<a class="code" href="class_wall_timer.html#a07aaf1227e4d645f15e0a964f54ef291">Start</a>();</div>
|
|
<div class="line"><a name="l00362"></a><span class="lineno"> 362</span>  </div>
|
|
<div class="line"><a name="l00363"></a><span class="lineno"> 363</span>  <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> num_subsumed_clauses = 0;</div>
|
|
<div class="line"><a name="l00364"></a><span class="lineno"> 364</span>  <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> num_removed_literals = 0;</div>
|
|
<div class="line"><a name="l00365"></a><span class="lineno"> 365</span>  <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> num_inspected_signatures = 0;</div>
|
|
<div class="line"><a name="l00366"></a><span class="lineno"> 366</span>  <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> num_inspected_literals = 0;</div>
|
|
<div class="line"><a name="l00367"></a><span class="lineno"> 367</span>  </div>
|
|
<div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  <span class="comment">// We need this temporary vector for the DRAT proof settings, otherwise</span></div>
|
|
<div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  <span class="comment">// we could just have done an in-place transformation.</span></div>
|
|
<div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  std::vector<Literal> new_clause;</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>  <span class="comment">// This function needs the watcher to be detached as we might remove some</span></div>
|
|
<div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  <span class="comment">// of the watched literals.</span></div>
|
|
<div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  <span class="comment">//</span></div>
|
|
<div class="line"><a name="l00375"></a><span class="lineno"> 375</span>  <span class="comment">// TODO(user): We could do that only if we do some reduction, but this is</span></div>
|
|
<div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  <span class="comment">// quite fast though.</span></div>
|
|
<div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#ae234022ee7c496416290d1946f56e1ad">DeleteRemovedClauses</a>();</div>
|
|
<div class="line"><a name="l00378"></a><span class="lineno"> 378</span>  clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#a38c7c4ca12035b254d9497a401606e0c">DetachAllClauses</a>();</div>
|
|
<div class="line"><a name="l00379"></a><span class="lineno"> 379</span>  </div>
|
|
<div class="line"><a name="l00380"></a><span class="lineno"> 380</span>  <span class="comment">// Process clause by increasing sizes.</span></div>
|
|
<div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  <span class="comment">// TODO(user): probably faster without the size indirection.</span></div>
|
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<div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  std::vector<SatClause*> clauses =</div>
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<div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#a0569d77056e622964bd02dd901950ede">AllClausesInCreationOrder</a>();</div>
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<div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  std::sort(clauses.begin(), clauses.end(),</div>
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<div class="line"><a name="l00385"></a><span class="lineno"> 385</span>  [](<a class="code" href="classoperations__research_1_1sat_1_1_sat_clause.html">SatClause</a>* <a class="code" href="constraint__solver_2table_8cc.html#af730895c6c6ef6e03caaf6251192dfd2">a</a>, <a class="code" href="classoperations__research_1_1sat_1_1_sat_clause.html">SatClause</a>* <a class="code" href="constraint__solver_2table_8cc.html#a344010e26426d6a13411648d988bc9b6">b</a>) { return a->size() < b->size(); });</div>
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<div class="line"><a name="l00386"></a><span class="lineno"> 386</span>  </div>
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<div class="line"><a name="l00387"></a><span class="lineno"> 387</span>  <span class="comment">// Used to mark clause literals.</span></div>
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|
<div class="line"><a name="l00388"></a><span class="lineno"> 388</span>  <span class="keyword">const</span> LiteralIndex num_literals(sat_solver_-><a class="code" href="classoperations__research_1_1sat_1_1_sat_solver.html#a9d3beb2afe4ae647674b054bf29290e2">NumVariables</a>() * 2);</div>
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<div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  <a class="code" href="classoperations__research_1_1_sparse_bitset.html">SparseBitset<LiteralIndex></a> marked(num_literals);</div>
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<div class="line"><a name="l00390"></a><span class="lineno"> 390</span>  </div>
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<div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  <span class="comment">// Clause index in clauses.</span></div>
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<div class="line"><a name="l00392"></a><span class="lineno"> 392</span>  <span class="comment">// TODO(user): Storing signatures here might be faster?</span></div>
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<div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  <a class="code" href="classabsl_1_1_strong_vector.html">absl::StrongVector<LiteralIndex, absl::InlinedVector<int, 6></a>> one_watcher(</div>
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<div class="line"><a name="l00394"></a><span class="lineno"> 394</span>  num_literals.value());</div>
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<div class="line"><a name="l00395"></a><span class="lineno"> 395</span>  </div>
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<div class="line"><a name="l00396"></a><span class="lineno"> 396</span>  <span class="comment">// Clause signatures in the same order as clauses.</span></div>
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<div class="line"><a name="l00397"></a><span class="lineno"> 397</span>  std::vector<uint64> signatures(clauses.size());</div>
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<div class="line"><a name="l00398"></a><span class="lineno"> 398</span>  </div>
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<div class="line"><a name="l00399"></a><span class="lineno"> 399</span>  std::vector<Literal> candidates_for_removal;</div>
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<div class="line"><a name="l00400"></a><span class="lineno"> 400</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> clause_index = 0; clause_index < clauses.size(); ++clause_index) {</div>
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<div class="line"><a name="l00401"></a><span class="lineno"> 401</span>  <a class="code" href="classoperations__research_1_1sat_1_1_sat_clause.html">SatClause</a>* clause = clauses[clause_index];</div>
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<div class="line"><a name="l00402"></a><span class="lineno"> 402</span>  </div>
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<div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  <span class="comment">// TODO(user): Better abort limit. We could also limit the watcher sizes and</span></div>
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<div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  <span class="comment">// never look at really long clauses. Note that for an easier</span></div>
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<div class="line"><a name="l00405"></a><span class="lineno"> 405</span>  <span class="comment">// incrementality, it is better to reach some kind of completion so we know</span></div>
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<div class="line"><a name="l00406"></a><span class="lineno"> 406</span>  <span class="comment">// what new stuff need to be done.</span></div>
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<div class="line"><a name="l00407"></a><span class="lineno"> 407</span>  <span class="keywordflow">if</span> (num_inspected_literals + num_inspected_signatures > 1e9) {</div>
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<div class="line"><a name="l00408"></a><span class="lineno"> 408</span>  <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00409"></a><span class="lineno"> 409</span>  }</div>
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<div class="line"><a name="l00410"></a><span class="lineno"> 410</span>  </div>
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<div class="line"><a name="l00411"></a><span class="lineno"> 411</span>  <span class="comment">// Check for subsumption, note that this currently ignore all clauses in the</span></div>
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<div class="line"><a name="l00412"></a><span class="lineno"> 412</span>  <span class="comment">// binary implication graphs. Stamping is doing some of that (and some also</span></div>
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<div class="line"><a name="l00413"></a><span class="lineno"> 413</span>  <span class="comment">// happen during probing), but we could consider only direct implications</span></div>
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<div class="line"><a name="l00414"></a><span class="lineno"> 414</span>  <span class="comment">// here and be a bit more exhaustive than what stamping do with them (at</span></div>
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<div class="line"><a name="l00415"></a><span class="lineno"> 415</span>  <span class="comment">// least for node with many incoming and outgoing implications).</span></div>
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<div class="line"><a name="l00416"></a><span class="lineno"> 416</span>  <span class="comment">//</span></div>
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<div class="line"><a name="l00417"></a><span class="lineno"> 417</span>  <span class="comment">// TODO(user): Do some reduction using binary clauses. Note that only clause</span></div>
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<div class="line"><a name="l00418"></a><span class="lineno"> 418</span>  <span class="comment">// that never propagated since last round need to be checked for binary</span></div>
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<div class="line"><a name="l00419"></a><span class="lineno"> 419</span>  <span class="comment">// subsumption.</span></div>
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|
<div class="line"><a name="l00420"></a><span class="lineno"> 420</span>  </div>
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<div class="line"><a name="l00421"></a><span class="lineno"> 421</span>  <span class="comment">// Compute hash and mark literals.</span></div>
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<div class="line"><a name="l00422"></a><span class="lineno"> 422</span>  <a class="code" href="integral__types_8h.html#abc0f5bc07737e498f287334775dff2b6">uint64</a> signature = 0;</div>
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<div class="line"><a name="l00423"></a><span class="lineno"> 423</span>  marked.<a class="code" href="classoperations__research_1_1_sparse_bitset.html#ab4bc8236a9bfe59526e353800a0f0470">SparseClearAll</a>();</div>
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<div class="line"><a name="l00424"></a><span class="lineno"> 424</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <a class="code" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a> l : clause-><a class="code" href="classoperations__research_1_1sat_1_1_sat_clause.html#a05691332c1a49213875440568a7580aa">AsSpan</a>()) {</div>
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<div class="line"><a name="l00425"></a><span class="lineno"> 425</span>  marked.<a class="code" href="classoperations__research_1_1_sparse_bitset.html#a41f798a04019147982b29c576ff9d8b7">Set</a>(l.Index());</div>
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<div class="line"><a name="l00426"></a><span class="lineno"> 426</span>  signature |= (<a class="code" href="integral__types_8h.html#abc0f5bc07737e498f287334775dff2b6">uint64</a>{1} << (l.Variable().value() % 64));</div>
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<div class="line"><a name="l00427"></a><span class="lineno"> 427</span>  }</div>
|
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<div class="line"><a name="l00428"></a><span class="lineno"> 428</span>  </div>
|
|
<div class="line"><a name="l00429"></a><span class="lineno"> 429</span>  <span class="comment">// Look for clause that subsumes this one. Note that because we inspect</span></div>
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|
<div class="line"><a name="l00430"></a><span class="lineno"> 430</span>  <span class="comment">// all one watcher lists for the literals of this clause, if a clause is</span></div>
|
|
<div class="line"><a name="l00431"></a><span class="lineno"> 431</span>  <span class="comment">// included inside this one, it must appear in one of these lists.</span></div>
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|
<div class="line"><a name="l00432"></a><span class="lineno"> 432</span>  <span class="keywordtype">bool</span> removed = <span class="keyword">false</span>;</div>
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|
<div class="line"><a name="l00433"></a><span class="lineno"> 433</span>  candidates_for_removal.clear();</div>
|
|
<div class="line"><a name="l00434"></a><span class="lineno"> 434</span>  <span class="keyword">const</span> <a class="code" href="integral__types_8h.html#abc0f5bc07737e498f287334775dff2b6">uint64</a> mask = ~signature;</div>
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<div class="line"><a name="l00435"></a><span class="lineno"> 435</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <a class="code" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a> l : clause-><a class="code" href="classoperations__research_1_1sat_1_1_sat_clause.html#a05691332c1a49213875440568a7580aa">AsSpan</a>()) {</div>
|
|
<div class="line"><a name="l00436"></a><span class="lineno"> 436</span>  num_inspected_signatures += one_watcher[l.Index()].<a class="code" href="classabsl_1_1_strong_vector.html#a60304b65bf89363bcc3165d3cde67f86">size</a>();</div>
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|
<div class="line"><a name="l00437"></a><span class="lineno"> 437</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> i : one_watcher[l.Index()]) {</div>
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|
<div class="line"><a name="l00438"></a><span class="lineno"> 438</span>  <span class="keywordflow">if</span> ((mask & signatures[i]) != 0) <span class="keywordflow">continue</span>;</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>  <span class="keywordtype">bool</span> subsumed = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00441"></a><span class="lineno"> 441</span>  <span class="keywordtype">bool</span> stengthen = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00442"></a><span class="lineno"> 442</span>  LiteralIndex to_remove = <a class="code" href="namespaceoperations__research_1_1sat.html#a2dbcb7017d468a17bdb30252af5c6c31">kNoLiteralIndex</a>;</div>
|
|
<div class="line"><a name="l00443"></a><span class="lineno"> 443</span>  num_inspected_literals += clauses[i]->size();</div>
|
|
<div class="line"><a name="l00444"></a><span class="lineno"> 444</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <a class="code" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a> o : clauses[i]->AsSpan()) {</div>
|
|
<div class="line"><a name="l00445"></a><span class="lineno"> 445</span>  <span class="keywordflow">if</span> (!marked[o.Index()]) {</div>
|
|
<div class="line"><a name="l00446"></a><span class="lineno"> 446</span>  subsumed = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00447"></a><span class="lineno"> 447</span>  <span class="keywordflow">if</span> (to_remove == <a class="code" href="namespaceoperations__research_1_1sat.html#a2dbcb7017d468a17bdb30252af5c6c31">kNoLiteralIndex</a> && marked[o.NegatedIndex()]) {</div>
|
|
<div class="line"><a name="l00448"></a><span class="lineno"> 448</span>  to_remove = o.NegatedIndex();</div>
|
|
<div class="line"><a name="l00449"></a><span class="lineno"> 449</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00450"></a><span class="lineno"> 450</span>  stengthen = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00451"></a><span class="lineno"> 451</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l00452"></a><span class="lineno"> 452</span>  }</div>
|
|
<div class="line"><a name="l00453"></a><span class="lineno"> 453</span>  }</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>  <span class="keywordflow">if</span> (subsumed) {</div>
|
|
<div class="line"><a name="l00456"></a><span class="lineno"> 456</span>  ++num_subsumed_clauses;</div>
|
|
<div class="line"><a name="l00457"></a><span class="lineno"> 457</span>  num_removed_literals += clause-><a class="code" href="classoperations__research_1_1sat_1_1_sat_clause.html#af9593d4a5ff4274efaf429cb4f9e57cc">size</a>();</div>
|
|
<div class="line"><a name="l00458"></a><span class="lineno"> 458</span>  clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#a287676c504a640a5569710d352ef6585">InprocessingRemoveClause</a>(clause);</div>
|
|
<div class="line"><a name="l00459"></a><span class="lineno"> 459</span>  removed = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00460"></a><span class="lineno"> 460</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l00461"></a><span class="lineno"> 461</span>  }</div>
|
|
<div class="line"><a name="l00462"></a><span class="lineno"> 462</span>  <span class="keywordflow">if</span> (stengthen) {</div>
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|
<div class="line"><a name="l00463"></a><span class="lineno"> 463</span>  <a class="code" href="base_2logging_8h.html#ab25e01a2942b821d66371fc68d53f2eb">CHECK_NE</a>(<a class="code" href="namespaceoperations__research_1_1sat.html#a2dbcb7017d468a17bdb30252af5c6c31">kNoLiteralIndex</a>, to_remove);</div>
|
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<div class="line"><a name="l00464"></a><span class="lineno"> 464</span>  candidates_for_removal.push_back(<a class="code" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a>(to_remove));</div>
|
|
<div class="line"><a name="l00465"></a><span class="lineno"> 465</span>  }</div>
|
|
<div class="line"><a name="l00466"></a><span class="lineno"> 466</span>  }</div>
|
|
<div class="line"><a name="l00467"></a><span class="lineno"> 467</span>  <span class="keywordflow">if</span> (removed) <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l00468"></a><span class="lineno"> 468</span>  }</div>
|
|
<div class="line"><a name="l00469"></a><span class="lineno"> 469</span>  <span class="keywordflow">if</span> (removed) <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l00470"></a><span class="lineno"> 470</span>  </div>
|
|
<div class="line"><a name="l00471"></a><span class="lineno"> 471</span>  <span class="comment">// For strengthenning we also need to check the negative watcher lists.</span></div>
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<div class="line"><a name="l00472"></a><span class="lineno"> 472</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <a class="code" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a> l : clause-><a class="code" href="classoperations__research_1_1sat_1_1_sat_clause.html#a05691332c1a49213875440568a7580aa">AsSpan</a>()) {</div>
|
|
<div class="line"><a name="l00473"></a><span class="lineno"> 473</span>  num_inspected_signatures += one_watcher[l.NegatedIndex()].<a class="code" href="classabsl_1_1_strong_vector.html#a60304b65bf89363bcc3165d3cde67f86">size</a>();</div>
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<div class="line"><a name="l00474"></a><span class="lineno"> 474</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> i : one_watcher[l.NegatedIndex()]) {</div>
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<div class="line"><a name="l00475"></a><span class="lineno"> 475</span>  <span class="keywordflow">if</span> ((mask & signatures[i]) != 0) <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l00476"></a><span class="lineno"> 476</span>  </div>
|
|
<div class="line"><a name="l00477"></a><span class="lineno"> 477</span>  <span class="keywordtype">bool</span> stengthen = <span class="keyword">true</span>;</div>
|
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<div class="line"><a name="l00478"></a><span class="lineno"> 478</span>  num_inspected_literals += clauses[i]->size();</div>
|
|
<div class="line"><a name="l00479"></a><span class="lineno"> 479</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <a class="code" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a> o : clauses[i]->AsSpan()) {</div>
|
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<div class="line"><a name="l00480"></a><span class="lineno"> 480</span>  <span class="keywordflow">if</span> (o == l.Negated()) <span class="keywordflow">continue</span>;</div>
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|
<div class="line"><a name="l00481"></a><span class="lineno"> 481</span>  <span class="keywordflow">if</span> (!marked[o.Index()]) {</div>
|
|
<div class="line"><a name="l00482"></a><span class="lineno"> 482</span>  stengthen = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00483"></a><span class="lineno"> 483</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l00484"></a><span class="lineno"> 484</span>  }</div>
|
|
<div class="line"><a name="l00485"></a><span class="lineno"> 485</span>  }</div>
|
|
<div class="line"><a name="l00486"></a><span class="lineno"> 486</span>  <span class="keywordflow">if</span> (stengthen) {</div>
|
|
<div class="line"><a name="l00487"></a><span class="lineno"> 487</span>  candidates_for_removal.push_back(l);</div>
|
|
<div class="line"><a name="l00488"></a><span class="lineno"> 488</span>  }</div>
|
|
<div class="line"><a name="l00489"></a><span class="lineno"> 489</span>  }</div>
|
|
<div class="line"><a name="l00490"></a><span class="lineno"> 490</span>  }</div>
|
|
<div class="line"><a name="l00491"></a><span class="lineno"> 491</span>  </div>
|
|
<div class="line"><a name="l00492"></a><span class="lineno"> 492</span>  <span class="comment">// Any literal here can be removed, but afterwards the other might not. For</span></div>
|
|
<div class="line"><a name="l00493"></a><span class="lineno"> 493</span>  <span class="comment">// now we just remove the first one.</span></div>
|
|
<div class="line"><a name="l00494"></a><span class="lineno"> 494</span>  <span class="comment">//</span></div>
|
|
<div class="line"><a name="l00495"></a><span class="lineno"> 495</span>  <span class="comment">// TODO(user): remove first and see if other still removable. Alternatively</span></div>
|
|
<div class="line"><a name="l00496"></a><span class="lineno"> 496</span>  <span class="comment">// use a "removed" marker and redo a check for each clause that simplifies</span></div>
|
|
<div class="line"><a name="l00497"></a><span class="lineno"> 497</span>  <span class="comment">// this one? Or just remove the first one, and wait for next round.</span></div>
|
|
<div class="line"><a name="l00498"></a><span class="lineno"> 498</span>  <span class="keywordflow">if</span> (!candidates_for_removal.empty()) {</div>
|
|
<div class="line"><a name="l00499"></a><span class="lineno"> 499</span>  new_clause.clear();</div>
|
|
<div class="line"><a name="l00500"></a><span class="lineno"> 500</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <a class="code" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a> l : clause-><a class="code" href="classoperations__research_1_1sat_1_1_sat_clause.html#a05691332c1a49213875440568a7580aa">AsSpan</a>()) {</div>
|
|
<div class="line"><a name="l00501"></a><span class="lineno"> 501</span>  new_clause.push_back(l);</div>
|
|
<div class="line"><a name="l00502"></a><span class="lineno"> 502</span>  }</div>
|
|
<div class="line"><a name="l00503"></a><span class="lineno"> 503</span>  </div>
|
|
<div class="line"><a name="l00504"></a><span class="lineno"> 504</span>  <span class="keywordtype">int</span> new_size = 0;</div>
|
|
<div class="line"><a name="l00505"></a><span class="lineno"> 505</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <a class="code" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a> l : new_clause) {</div>
|
|
<div class="line"><a name="l00506"></a><span class="lineno"> 506</span>  <span class="keywordflow">if</span> (l == candidates_for_removal[0]) <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l00507"></a><span class="lineno"> 507</span>  new_clause[new_size++] = l;</div>
|
|
<div class="line"><a name="l00508"></a><span class="lineno"> 508</span>  }</div>
|
|
<div class="line"><a name="l00509"></a><span class="lineno"> 509</span>  <a class="code" href="base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b">CHECK_EQ</a>(new_size + 1, new_clause.size());</div>
|
|
<div class="line"><a name="l00510"></a><span class="lineno"> 510</span>  new_clause.resize(new_size);</div>
|
|
<div class="line"><a name="l00511"></a><span class="lineno"> 511</span>  </div>
|
|
<div class="line"><a name="l00512"></a><span class="lineno"> 512</span>  num_removed_literals += clause-><a class="code" href="classoperations__research_1_1sat_1_1_sat_clause.html#af9593d4a5ff4274efaf429cb4f9e57cc">size</a>() - new_clause.size();</div>
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|
<div class="line"><a name="l00513"></a><span class="lineno"> 513</span>  <span class="keywordflow">if</span> (!clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#ab17b31190c5ab58a1334139848335283">InprocessingRewriteClause</a>(clause, new_clause)) {</div>
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|
<div class="line"><a name="l00514"></a><span class="lineno"> 514</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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|
<div class="line"><a name="l00515"></a><span class="lineno"> 515</span>  }</div>
|
|
<div class="line"><a name="l00516"></a><span class="lineno"> 516</span>  <span class="keywordflow">if</span> (clause-><a class="code" href="classoperations__research_1_1sat_1_1_sat_clause.html#af9593d4a5ff4274efaf429cb4f9e57cc">size</a>() == 0) <span class="keywordflow">continue</span>;</div>
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|
<div class="line"><a name="l00517"></a><span class="lineno"> 517</span>  </div>
|
|
<div class="line"><a name="l00518"></a><span class="lineno"> 518</span>  <span class="comment">// Recompute signature.</span></div>
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|
<div class="line"><a name="l00519"></a><span class="lineno"> 519</span>  signature = 0;</div>
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<div class="line"><a name="l00520"></a><span class="lineno"> 520</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <a class="code" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a> l : clause-><a class="code" href="classoperations__research_1_1sat_1_1_sat_clause.html#a05691332c1a49213875440568a7580aa">AsSpan</a>()) {</div>
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<div class="line"><a name="l00521"></a><span class="lineno"> 521</span>  signature |= (<a class="code" href="integral__types_8h.html#abc0f5bc07737e498f287334775dff2b6">uint64</a>{1} << (l.Variable().value() % 64));</div>
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<div class="line"><a name="l00522"></a><span class="lineno"> 522</span>  }</div>
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<div class="line"><a name="l00523"></a><span class="lineno"> 523</span>  }</div>
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<div class="line"><a name="l00524"></a><span class="lineno"> 524</span>  </div>
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<div class="line"><a name="l00525"></a><span class="lineno"> 525</span>  <span class="comment">// Register one literal to watch. Any literal works, but we choose the</span></div>
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<div class="line"><a name="l00526"></a><span class="lineno"> 526</span>  <span class="comment">// smallest list.</span></div>
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<div class="line"><a name="l00527"></a><span class="lineno"> 527</span>  <span class="comment">//</span></div>
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<div class="line"><a name="l00528"></a><span class="lineno"> 528</span>  <span class="comment">// TODO(user): No need to add this clause if we know it cannot subsume</span></div>
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<div class="line"><a name="l00529"></a><span class="lineno"> 529</span>  <span class="comment">// any new clause since last round. i.e. unchanged clause that do not</span></div>
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<div class="line"><a name="l00530"></a><span class="lineno"> 530</span>  <span class="comment">// contains any literals of newly added clause do not need to be added</span></div>
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<div class="line"><a name="l00531"></a><span class="lineno"> 531</span>  <span class="comment">// here. We can track two bitset in LiteralWatchers via a register</span></div>
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<div class="line"><a name="l00532"></a><span class="lineno"> 532</span>  <span class="comment">// mechanism:</span></div>
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<div class="line"><a name="l00533"></a><span class="lineno"> 533</span>  <span class="comment">// - literal of newly watched clauses since last clear.</span></div>
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|
<div class="line"><a name="l00534"></a><span class="lineno"> 534</span>  <span class="comment">// - literal of reduced clauses since last clear.</span></div>
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|
<div class="line"><a name="l00535"></a><span class="lineno"> 535</span>  <span class="comment">//</span></div>
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|
<div class="line"><a name="l00536"></a><span class="lineno"> 536</span>  <span class="comment">// Important: we can only use this clause to subsume/strenghten others if</span></div>
|
|
<div class="line"><a name="l00537"></a><span class="lineno"> 537</span>  <span class="comment">// it cannot be deleted later.</span></div>
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<div class="line"><a name="l00538"></a><span class="lineno"> 538</span>  <span class="keywordflow">if</span> (!clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#ab054db78fc1b1e1681d2fc4e9fd1ca45">IsRemovable</a>(clause)) {</div>
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<div class="line"><a name="l00539"></a><span class="lineno"> 539</span>  <span class="keywordtype">int</span> min_size = <a class="code" href="integral__types_8h.html#ab0cfc59ab5792086f6f8b9234320fd33">kint32max</a>;</div>
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<div class="line"><a name="l00540"></a><span class="lineno"> 540</span>  LiteralIndex min_literal = <a class="code" href="namespaceoperations__research_1_1sat.html#a2dbcb7017d468a17bdb30252af5c6c31">kNoLiteralIndex</a>;</div>
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<div class="line"><a name="l00541"></a><span class="lineno"> 541</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <a class="code" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a> l : clause-><a class="code" href="classoperations__research_1_1sat_1_1_sat_clause.html#a05691332c1a49213875440568a7580aa">AsSpan</a>()) {</div>
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<div class="line"><a name="l00542"></a><span class="lineno"> 542</span>  <span class="keywordflow">if</span> (one_watcher[l.Index()].<a class="code" href="classabsl_1_1_strong_vector.html#a60304b65bf89363bcc3165d3cde67f86">size</a>() < min_size) {</div>
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<div class="line"><a name="l00543"></a><span class="lineno"> 543</span>  min_size = one_watcher[l.Index()].<a class="code" href="classabsl_1_1_strong_vector.html#a60304b65bf89363bcc3165d3cde67f86">size</a>();</div>
|
|
<div class="line"><a name="l00544"></a><span class="lineno"> 544</span>  min_literal = l.Index();</div>
|
|
<div class="line"><a name="l00545"></a><span class="lineno"> 545</span>  }</div>
|
|
<div class="line"><a name="l00546"></a><span class="lineno"> 546</span>  }</div>
|
|
<div class="line"><a name="l00547"></a><span class="lineno"> 547</span>  </div>
|
|
<div class="line"><a name="l00548"></a><span class="lineno"> 548</span>  <span class="comment">// TODO(user): We could/should sort the literal in this clause by</span></div>
|
|
<div class="line"><a name="l00549"></a><span class="lineno"> 549</span>  <span class="comment">// using literals that appear in a small number of clauses first so that</span></div>
|
|
<div class="line"><a name="l00550"></a><span class="lineno"> 550</span>  <span class="comment">// we maximize the chance of early abort in the critical loops above.</span></div>
|
|
<div class="line"><a name="l00551"></a><span class="lineno"> 551</span>  <span class="comment">//</span></div>
|
|
<div class="line"><a name="l00552"></a><span class="lineno"> 552</span>  <span class="comment">// TODO(user): We could also move the watched literal first so we always</span></div>
|
|
<div class="line"><a name="l00553"></a><span class="lineno"> 553</span>  <span class="comment">// skip it.</span></div>
|
|
<div class="line"><a name="l00554"></a><span class="lineno"> 554</span>  signatures[clause_index] = signature;</div>
|
|
<div class="line"><a name="l00555"></a><span class="lineno"> 555</span>  one_watcher[min_literal].<a class="code" href="classabsl_1_1_strong_vector.html#a9263000d449fdccb6cb70b303063e60b">push_back</a>(clause_index);</div>
|
|
<div class="line"><a name="l00556"></a><span class="lineno"> 556</span>  }</div>
|
|
<div class="line"><a name="l00557"></a><span class="lineno"> 557</span>  }</div>
|
|
<div class="line"><a name="l00558"></a><span class="lineno"> 558</span>  </div>
|
|
<div class="line"><a name="l00559"></a><span class="lineno"> 559</span>  <span class="comment">// We might have fixed variables, finish the propagation.</span></div>
|
|
<div class="line"><a name="l00560"></a><span class="lineno"> 560</span>  <span class="keywordflow">if</span> (!<a class="code" href="classoperations__research_1_1sat_1_1_inprocessing.html#a7fefd67efe60192540adcc4bdea29836">LevelZeroPropagate</a>()) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00561"></a><span class="lineno"> 561</span>  </div>
|
|
<div class="line"><a name="l00562"></a><span class="lineno"> 562</span>  <span class="comment">// TODO(user): tune the deterministic time.</span></div>
|
|
<div class="line"><a name="l00563"></a><span class="lineno"> 563</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> dtime = <span class="keyword">static_cast<</span><span class="keywordtype">double</span><span class="keyword">></span>(num_inspected_signatures) * 1e-8 +</div>
|
|
<div class="line"><a name="l00564"></a><span class="lineno"> 564</span>  <span class="keyword">static_cast<</span><span class="keywordtype">double</span><span class="keyword">></span>(num_inspected_literals) * 5e-9;</div>
|
|
<div class="line"><a name="l00565"></a><span class="lineno"> 565</span>  time_limit_-><a class="code" href="classoperations__research_1_1_time_limit.html#af90cfd1fc238433fc303ee28c5914eb9">AdvanceDeterministicTime</a>(dtime);</div>
|
|
<div class="line"><a name="l00566"></a><span class="lineno"> 566</span>  <a class="code" href="base_2logging_8h.html#a09f7d88282cf92c9f231270ac113e5c6">LOG_IF</a>(<a class="code" href="log__severity_8h.html#ab4a2cbab234914b320b7fae11b6e8cb9">INFO</a>, log_info) << <span class="stringliteral">"Subsume. num_removed_literals: "</span></div>
|
|
<div class="line"><a name="l00567"></a><span class="lineno"> 567</span>  << num_removed_literals</div>
|
|
<div class="line"><a name="l00568"></a><span class="lineno"> 568</span>  << <span class="stringliteral">" num_subsumed: "</span> << num_subsumed_clauses</div>
|
|
<div class="line"><a name="l00569"></a><span class="lineno"> 569</span>  << <span class="stringliteral">" dtime: "</span> << dtime</div>
|
|
<div class="line"><a name="l00570"></a><span class="lineno"> 570</span>  << <span class="stringliteral">" wtime: "</span> << <a class="code" href="cp__model__solver_8cc.html#ace0951799e72ee99fc07d5e509bc7cbf">wall_timer</a>.<a class="code" href="class_wall_timer.html#aec56fe080959ecebec3feaed9dafde84">Get</a>();</div>
|
|
<div class="line"><a name="l00571"></a><span class="lineno"> 571</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00572"></a><span class="lineno"> 572</span> }</div>
|
|
<div class="line"><a name="l00573"></a><span class="lineno"> 573</span>  </div>
|
|
<div class="line"><a name="l00574"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_stamping_simplifier.html#a1837f97f35b2db520af88985ea7e5666"> 574</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_stamping_simplifier.html#a1837f97f35b2db520af88985ea7e5666">StampingSimplifier::DoOneRound</a>(<span class="keywordtype">bool</span> log_info) {</div>
|
|
<div class="line"><a name="l00575"></a><span class="lineno"> 575</span>  <a class="code" href="class_wall_timer.html">WallTimer</a> <a class="code" href="cp__model__solver_8cc.html#ace0951799e72ee99fc07d5e509bc7cbf">wall_timer</a>;</div>
|
|
<div class="line"><a name="l00576"></a><span class="lineno"> 576</span>  <a class="code" href="cp__model__solver_8cc.html#ace0951799e72ee99fc07d5e509bc7cbf">wall_timer</a>.<a class="code" href="class_wall_timer.html#a07aaf1227e4d645f15e0a964f54ef291">Start</a>();</div>
|
|
<div class="line"><a name="l00577"></a><span class="lineno"> 577</span>  </div>
|
|
<div class="line"><a name="l00578"></a><span class="lineno"> 578</span>  dtime_ = 0.0;</div>
|
|
<div class="line"><a name="l00579"></a><span class="lineno"> 579</span>  num_subsumed_clauses_ = 0;</div>
|
|
<div class="line"><a name="l00580"></a><span class="lineno"> 580</span>  num_removed_literals_ = 0;</div>
|
|
<div class="line"><a name="l00581"></a><span class="lineno"> 581</span>  num_fixed_ = 0;</div>
|
|
<div class="line"><a name="l00582"></a><span class="lineno"> 582</span>  </div>
|
|
<div class="line"><a name="l00583"></a><span class="lineno"> 583</span>  <span class="keywordflow">if</span> (implication_graph_-><a class="code" href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#a44c239ce3ac9f4886aa735ae3071a2f2">literal_size</a>() == 0) <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00584"></a><span class="lineno"> 584</span>  <span class="keywordflow">if</span> (implication_graph_-><a class="code" href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#a6dcddbd6c9e8a05ca2170a13c9ff8cbb">num_implications</a>() == 0) <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00585"></a><span class="lineno"> 585</span>  </div>
|
|
<div class="line"><a name="l00586"></a><span class="lineno"> 586</span>  <span class="keywordflow">if</span> (!stamps_are_already_computed_) {</div>
|
|
<div class="line"><a name="l00587"></a><span class="lineno"> 587</span>  <span class="comment">// We need a DAG so that we don't have cycle while we sample the tree.</span></div>
|
|
<div class="line"><a name="l00588"></a><span class="lineno"> 588</span>  <span class="comment">// TODO(user): We could probably deal with it if needed so that we don't</span></div>
|
|
<div class="line"><a name="l00589"></a><span class="lineno"> 589</span>  <span class="comment">// need to do equivalence detetion each time we want to run this.</span></div>
|
|
<div class="line"><a name="l00590"></a><span class="lineno"> 590</span>  implication_graph_-><a class="code" href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#abcad56047cef75a12528fe99794a6e1e">RemoveFixedVariables</a>();</div>
|
|
<div class="line"><a name="l00591"></a><span class="lineno"> 591</span>  <span class="keywordflow">if</span> (!implication_graph_-><a class="code" href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#aac261e221628d6a51be7243563659929">DetectEquivalences</a>(log_info)) <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00592"></a><span class="lineno"> 592</span>  <a class="code" href="classoperations__research_1_1sat_1_1_stamping_simplifier.html#aaf918948eb5d49c45195671882bbb400">SampleTreeAndFillParent</a>();</div>
|
|
<div class="line"><a name="l00593"></a><span class="lineno"> 593</span>  <span class="keywordflow">if</span> (!<a class="code" href="classoperations__research_1_1sat_1_1_stamping_simplifier.html#ad23fe7afc319b790417c946b34c5e40b">ComputeStamps</a>()) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00594"></a><span class="lineno"> 594</span>  }</div>
|
|
<div class="line"><a name="l00595"></a><span class="lineno"> 595</span>  stamps_are_already_computed_ = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00596"></a><span class="lineno"> 596</span>  <span class="keywordflow">if</span> (!<a class="code" href="classoperations__research_1_1sat_1_1_stamping_simplifier.html#a5ea60f6738dfbc19da6098ea7e706fae">ProcessClauses</a>()) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00597"></a><span class="lineno"> 597</span>  </div>
|
|
<div class="line"><a name="l00598"></a><span class="lineno"> 598</span>  <span class="comment">// Note that num_removed_literals_ do not count the literals of the subsumed</span></div>
|
|
<div class="line"><a name="l00599"></a><span class="lineno"> 599</span>  <span class="comment">// clauses.</span></div>
|
|
<div class="line"><a name="l00600"></a><span class="lineno"> 600</span>  time_limit_-><a class="code" href="classoperations__research_1_1_time_limit.html#af90cfd1fc238433fc303ee28c5914eb9">AdvanceDeterministicTime</a>(dtime_);</div>
|
|
<div class="line"><a name="l00601"></a><span class="lineno"> 601</span>  log_info |= <a class="code" href="vlog__is__on_8h.html#a956152cad330225654d128f35c00efce">VLOG_IS_ON</a>(1);</div>
|
|
<div class="line"><a name="l00602"></a><span class="lineno"> 602</span>  <a class="code" href="base_2logging_8h.html#a09f7d88282cf92c9f231270ac113e5c6">LOG_IF</a>(<a class="code" href="log__severity_8h.html#ab4a2cbab234914b320b7fae11b6e8cb9">INFO</a>, log_info) << <span class="stringliteral">"Stamping. num_removed_literals: "</span></div>
|
|
<div class="line"><a name="l00603"></a><span class="lineno"> 603</span>  << num_removed_literals_</div>
|
|
<div class="line"><a name="l00604"></a><span class="lineno"> 604</span>  << <span class="stringliteral">" num_subsumed: "</span> << num_subsumed_clauses_</div>
|
|
<div class="line"><a name="l00605"></a><span class="lineno"> 605</span>  << <span class="stringliteral">" num_fixed: "</span> << num_fixed_ << <span class="stringliteral">" dtime: "</span> << dtime_</div>
|
|
<div class="line"><a name="l00606"></a><span class="lineno"> 606</span>  << <span class="stringliteral">" wtime: "</span> << <a class="code" href="cp__model__solver_8cc.html#ace0951799e72ee99fc07d5e509bc7cbf">wall_timer</a>.<a class="code" href="class_wall_timer.html#aec56fe080959ecebec3feaed9dafde84">Get</a>();</div>
|
|
<div class="line"><a name="l00607"></a><span class="lineno"> 607</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00608"></a><span class="lineno"> 608</span> }</div>
|
|
<div class="line"><a name="l00609"></a><span class="lineno"> 609</span>  </div>
|
|
<div class="line"><a name="l00610"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_stamping_simplifier.html#a23f1e3b69e90585b8c746ecb2c829d16"> 610</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_stamping_simplifier.html#a23f1e3b69e90585b8c746ecb2c829d16">StampingSimplifier::ComputeStampsForNextRound</a>(<span class="keywordtype">bool</span> log_info) {</div>
|
|
<div class="line"><a name="l00611"></a><span class="lineno"> 611</span>  <a class="code" href="class_wall_timer.html">WallTimer</a> <a class="code" href="cp__model__solver_8cc.html#ace0951799e72ee99fc07d5e509bc7cbf">wall_timer</a>;</div>
|
|
<div class="line"><a name="l00612"></a><span class="lineno"> 612</span>  <a class="code" href="cp__model__solver_8cc.html#ace0951799e72ee99fc07d5e509bc7cbf">wall_timer</a>.<a class="code" href="class_wall_timer.html#a07aaf1227e4d645f15e0a964f54ef291">Start</a>();</div>
|
|
<div class="line"><a name="l00613"></a><span class="lineno"> 613</span>  dtime_ = 0.0;</div>
|
|
<div class="line"><a name="l00614"></a><span class="lineno"> 614</span>  num_fixed_ = 0;</div>
|
|
<div class="line"><a name="l00615"></a><span class="lineno"> 615</span>  </div>
|
|
<div class="line"><a name="l00616"></a><span class="lineno"> 616</span>  <span class="keywordflow">if</span> (implication_graph_-><a class="code" href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#a44c239ce3ac9f4886aa735ae3071a2f2">literal_size</a>() == 0) <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00617"></a><span class="lineno"> 617</span>  <span class="keywordflow">if</span> (implication_graph_-><a class="code" href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#a6dcddbd6c9e8a05ca2170a13c9ff8cbb">num_implications</a>() == 0) <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00618"></a><span class="lineno"> 618</span>  </div>
|
|
<div class="line"><a name="l00619"></a><span class="lineno"> 619</span>  implication_graph_-><a class="code" href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#abcad56047cef75a12528fe99794a6e1e">RemoveFixedVariables</a>();</div>
|
|
<div class="line"><a name="l00620"></a><span class="lineno"> 620</span>  <span class="keywordflow">if</span> (!implication_graph_-><a class="code" href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#aac261e221628d6a51be7243563659929">DetectEquivalences</a>(log_info)) <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00621"></a><span class="lineno"> 621</span>  <a class="code" href="classoperations__research_1_1sat_1_1_stamping_simplifier.html#aaf918948eb5d49c45195671882bbb400">SampleTreeAndFillParent</a>();</div>
|
|
<div class="line"><a name="l00622"></a><span class="lineno"> 622</span>  <span class="keywordflow">if</span> (!<a class="code" href="classoperations__research_1_1sat_1_1_stamping_simplifier.html#ad23fe7afc319b790417c946b34c5e40b">ComputeStamps</a>()) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00623"></a><span class="lineno"> 623</span>  stamps_are_already_computed_ = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00624"></a><span class="lineno"> 624</span>  </div>
|
|
<div class="line"><a name="l00625"></a><span class="lineno"> 625</span>  <span class="comment">// TODO(user): compute some dtime, it is always zero currently.</span></div>
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|
<div class="line"><a name="l00626"></a><span class="lineno"> 626</span>  time_limit_-><a class="code" href="classoperations__research_1_1_time_limit.html#af90cfd1fc238433fc303ee28c5914eb9">AdvanceDeterministicTime</a>(dtime_);</div>
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|
<div class="line"><a name="l00627"></a><span class="lineno"> 627</span>  log_info |= <a class="code" href="vlog__is__on_8h.html#a956152cad330225654d128f35c00efce">VLOG_IS_ON</a>(1);</div>
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|
<div class="line"><a name="l00628"></a><span class="lineno"> 628</span>  <a class="code" href="base_2logging_8h.html#a09f7d88282cf92c9f231270ac113e5c6">LOG_IF</a>(<a class="code" href="log__severity_8h.html#ab4a2cbab234914b320b7fae11b6e8cb9">INFO</a>, log_info) << <span class="stringliteral">"Prestamping."</span></div>
|
|
<div class="line"><a name="l00629"></a><span class="lineno"> 629</span>  << <span class="stringliteral">" num_fixed: "</span> << num_fixed_ << <span class="stringliteral">" dtime: "</span> << dtime_</div>
|
|
<div class="line"><a name="l00630"></a><span class="lineno"> 630</span>  << <span class="stringliteral">" wtime: "</span> << <a class="code" href="cp__model__solver_8cc.html#ace0951799e72ee99fc07d5e509bc7cbf">wall_timer</a>.<a class="code" href="class_wall_timer.html#aec56fe080959ecebec3feaed9dafde84">Get</a>();</div>
|
|
<div class="line"><a name="l00631"></a><span class="lineno"> 631</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00632"></a><span class="lineno"> 632</span> }</div>
|
|
<div class="line"><a name="l00633"></a><span class="lineno"> 633</span>  </div>
|
|
<div class="line"><a name="l00634"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_stamping_simplifier.html#aaf918948eb5d49c45195671882bbb400"> 634</a></span> <span class="keywordtype">void</span> <a class="code" href="classoperations__research_1_1sat_1_1_stamping_simplifier.html#aaf918948eb5d49c45195671882bbb400">StampingSimplifier::SampleTreeAndFillParent</a>() {</div>
|
|
<div class="line"><a name="l00635"></a><span class="lineno"> 635</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> size = implication_graph_-><a class="code" href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#a44c239ce3ac9f4886aa735ae3071a2f2">literal_size</a>();</div>
|
|
<div class="line"><a name="l00636"></a><span class="lineno"> 636</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(implication_graph_-><a class="code" href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#ad7144ed926660fe38c0cfbeedbaa8dfc">IsDag</a>()); <span class="comment">// so we don't have cycle.</span></div>
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|
<div class="line"><a name="l00637"></a><span class="lineno"> 637</span>  parents_.<a class="code" href="classabsl_1_1_strong_vector.html#a4e3670a285a3642eaa07f66766cffa72">resize</a>(size);</div>
|
|
<div class="line"><a name="l00638"></a><span class="lineno"> 638</span>  <span class="keywordflow">for</span> (LiteralIndex i(0); i < size; ++i) {</div>
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|
<div class="line"><a name="l00639"></a><span class="lineno"> 639</span>  parents_[i] = i; <span class="comment">// default.</span></div>
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|
<div class="line"><a name="l00640"></a><span class="lineno"> 640</span>  <span class="keywordflow">if</span> (implication_graph_-><a class="code" href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#a92844929b07caef45924b8c5e3a5a05c">IsRedundant</a>(<a class="code" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a>(i))) <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l00641"></a><span class="lineno"> 641</span>  <span class="keywordflow">if</span> (assignment_.<a class="code" href="classoperations__research_1_1sat_1_1_variables_assignment.html#a142694366986039454f53b38e8378815">LiteralIsAssigned</a>(<a class="code" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a>(i))) <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l00642"></a><span class="lineno"> 642</span>  </div>
|
|
<div class="line"><a name="l00643"></a><span class="lineno"> 643</span>  <span class="comment">// TODO(user): Better algo to not select redundant parent.</span></div>
|
|
<div class="line"><a name="l00644"></a><span class="lineno"> 644</span>  <span class="comment">//</span></div>
|
|
<div class="line"><a name="l00645"></a><span class="lineno"> 645</span>  <span class="comment">// TODO(user): if parents_[x] = y, try not to have parents_[not(y)] = not(x)</span></div>
|
|
<div class="line"><a name="l00646"></a><span class="lineno"> 646</span>  <span class="comment">// because this is not as useful for the simplification power.</span></div>
|
|
<div class="line"><a name="l00647"></a><span class="lineno"> 647</span>  <span class="comment">//</span></div>
|
|
<div class="line"><a name="l00648"></a><span class="lineno"> 648</span>  <span class="comment">// TODO(user): More generally, we could sample a parent while probing so</span></div>
|
|
<div class="line"><a name="l00649"></a><span class="lineno"> 649</span>  <span class="comment">// that we consider all hyper binary implications (in the case we don't add</span></div>
|
|
<div class="line"><a name="l00650"></a><span class="lineno"> 650</span>  <span class="comment">// them to the implication graph already).</span></div>
|
|
<div class="line"><a name="l00651"></a><span class="lineno"> 651</span>  <span class="keyword">const</span> <span class="keyword">auto</span>& children_of_not_l =</div>
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|
<div class="line"><a name="l00652"></a><span class="lineno"> 652</span>  implication_graph_-><a class="code" href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#a7eb6126b57ff4ab8246fe54f4e5550f4">DirectImplications</a>(<a class="code" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a>(i).Negated());</div>
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|
<div class="line"><a name="l00653"></a><span class="lineno"> 653</span>  <span class="keywordflow">if</span> (children_of_not_l.empty()) <span class="keywordflow">continue</span>;</div>
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|
<div class="line"><a name="l00654"></a><span class="lineno"> 654</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> num_tries = 0; num_tries < 10; ++num_tries) {</div>
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|
<div class="line"><a name="l00655"></a><span class="lineno"> 655</span>  <span class="keyword">const</span> <a class="code" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a> candidate =</div>
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|
<div class="line"><a name="l00656"></a><span class="lineno"> 656</span>  children_of_not_l[absl::Uniform<int>(*random_, 0,</div>
|
|
<div class="line"><a name="l00657"></a><span class="lineno"> 657</span>  children_of_not_l.size())]</div>
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|
<div class="line"><a name="l00658"></a><span class="lineno"> 658</span>  .<a class="code" href="classoperations__research_1_1sat_1_1_literal.html#a886e9c024f7209181c0a850b6e90c644">Negated</a>();</div>
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|
<div class="line"><a name="l00659"></a><span class="lineno"> 659</span>  <span class="keywordflow">if</span> (implication_graph_-><a class="code" href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#a92844929b07caef45924b8c5e3a5a05c">IsRedundant</a>(candidate)) <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l00660"></a><span class="lineno"> 660</span>  <span class="keywordflow">if</span> (i == candidate.<a class="code" href="classoperations__research_1_1sat_1_1_literal.html#a4a11c7c4d7706c09de5e18707c3b5c62">Index</a>()) <span class="keywordflow">continue</span>;</div>
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|
<div class="line"><a name="l00661"></a><span class="lineno"> 661</span>  </div>
|
|
<div class="line"><a name="l00662"></a><span class="lineno"> 662</span>  <span class="comment">// We found an interesting parent.</span></div>
|
|
<div class="line"><a name="l00663"></a><span class="lineno"> 663</span>  parents_[i] = candidate.<a class="code" href="classoperations__research_1_1sat_1_1_literal.html#a4a11c7c4d7706c09de5e18707c3b5c62">Index</a>();</div>
|
|
<div class="line"><a name="l00664"></a><span class="lineno"> 664</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l00665"></a><span class="lineno"> 665</span>  }</div>
|
|
<div class="line"><a name="l00666"></a><span class="lineno"> 666</span>  }</div>
|
|
<div class="line"><a name="l00667"></a><span class="lineno"> 667</span> }</div>
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|
<div class="line"><a name="l00668"></a><span class="lineno"> 668</span>  </div>
|
|
<div class="line"><a name="l00669"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_stamping_simplifier.html#ad23fe7afc319b790417c946b34c5e40b"> 669</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_stamping_simplifier.html#ad23fe7afc319b790417c946b34c5e40b">StampingSimplifier::ComputeStamps</a>() {</div>
|
|
<div class="line"><a name="l00670"></a><span class="lineno"> 670</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> size = implication_graph_-><a class="code" href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#a44c239ce3ac9f4886aa735ae3071a2f2">literal_size</a>();</div>
|
|
<div class="line"><a name="l00671"></a><span class="lineno"> 671</span>  </div>
|
|
<div class="line"><a name="l00672"></a><span class="lineno"> 672</span>  <span class="comment">// Compute sizes.</span></div>
|
|
<div class="line"><a name="l00673"></a><span class="lineno"> 673</span>  sizes_.<a class="code" href="classabsl_1_1_strong_vector.html#a184fe69018ae421dcf31c964bfe40576">assign</a>(size, 0);</div>
|
|
<div class="line"><a name="l00674"></a><span class="lineno"> 674</span>  <span class="keywordflow">for</span> (LiteralIndex i(0); i < size; ++i) {</div>
|
|
<div class="line"><a name="l00675"></a><span class="lineno"> 675</span>  <span class="keywordflow">if</span> (parents_[i] == i) <span class="keywordflow">continue</span>; <span class="comment">// leaf.</span></div>
|
|
<div class="line"><a name="l00676"></a><span class="lineno"> 676</span>  sizes_[parents_[i]]++;</div>
|
|
<div class="line"><a name="l00677"></a><span class="lineno"> 677</span>  }</div>
|
|
<div class="line"><a name="l00678"></a><span class="lineno"> 678</span>  </div>
|
|
<div class="line"><a name="l00679"></a><span class="lineno"> 679</span>  <span class="comment">// Compute starts in the children_ vector for each node.</span></div>
|
|
<div class="line"><a name="l00680"></a><span class="lineno"> 680</span>  starts_.<a class="code" href="classabsl_1_1_strong_vector.html#a4e3670a285a3642eaa07f66766cffa72">resize</a>(size + 1); <span class="comment">// We use a sentinel.</span></div>
|
|
<div class="line"><a name="l00681"></a><span class="lineno"> 681</span>  starts_[LiteralIndex(0)] = 0;</div>
|
|
<div class="line"><a name="l00682"></a><span class="lineno"> 682</span>  <span class="keywordflow">for</span> (LiteralIndex i(1); i <= size; ++i) {</div>
|
|
<div class="line"><a name="l00683"></a><span class="lineno"> 683</span>  starts_[i] = starts_[i - 1] + sizes_[i - 1];</div>
|
|
<div class="line"><a name="l00684"></a><span class="lineno"> 684</span>  }</div>
|
|
<div class="line"><a name="l00685"></a><span class="lineno"> 685</span>  </div>
|
|
<div class="line"><a name="l00686"></a><span class="lineno"> 686</span>  <span class="comment">// Fill children. This messes up starts_.</span></div>
|
|
<div class="line"><a name="l00687"></a><span class="lineno"> 687</span>  children_.resize(size);</div>
|
|
<div class="line"><a name="l00688"></a><span class="lineno"> 688</span>  <span class="keywordflow">for</span> (LiteralIndex i(0); i < size; ++i) {</div>
|
|
<div class="line"><a name="l00689"></a><span class="lineno"> 689</span>  <span class="keywordflow">if</span> (parents_[i] == i) <span class="keywordflow">continue</span>; <span class="comment">// leaf.</span></div>
|
|
<div class="line"><a name="l00690"></a><span class="lineno"> 690</span>  children_[starts_[parents_[i]]++] = i;</div>
|
|
<div class="line"><a name="l00691"></a><span class="lineno"> 691</span>  }</div>
|
|
<div class="line"><a name="l00692"></a><span class="lineno"> 692</span>  </div>
|
|
<div class="line"><a name="l00693"></a><span class="lineno"> 693</span>  <span class="comment">// Reset starts to correct value.</span></div>
|
|
<div class="line"><a name="l00694"></a><span class="lineno"> 694</span>  <span class="keywordflow">for</span> (LiteralIndex i(0); i < size; ++i) {</div>
|
|
<div class="line"><a name="l00695"></a><span class="lineno"> 695</span>  starts_[i] -= sizes_[i];</div>
|
|
<div class="line"><a name="l00696"></a><span class="lineno"> 696</span>  }</div>
|
|
<div class="line"><a name="l00697"></a><span class="lineno"> 697</span>  </div>
|
|
<div class="line"><a name="l00698"></a><span class="lineno"> 698</span>  <span class="keywordflow">if</span> (<a class="code" href="macros_8h.html#a7f536a3b33f9bed8f75734e035d30725">DEBUG_MODE</a>) {</div>
|
|
<div class="line"><a name="l00699"></a><span class="lineno"> 699</span>  <a class="code" href="base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b">CHECK_EQ</a>(starts_[LiteralIndex(0)], 0);</div>
|
|
<div class="line"><a name="l00700"></a><span class="lineno"> 700</span>  <span class="keywordflow">for</span> (LiteralIndex i(1); i <= size; ++i) {</div>
|
|
<div class="line"><a name="l00701"></a><span class="lineno"> 701</span>  <a class="code" href="base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b">CHECK_EQ</a>(starts_[i], starts_[i - 1] + sizes_[i - 1]);</div>
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|
<div class="line"><a name="l00702"></a><span class="lineno"> 702</span>  }</div>
|
|
<div class="line"><a name="l00703"></a><span class="lineno"> 703</span>  }</div>
|
|
<div class="line"><a name="l00704"></a><span class="lineno"> 704</span>  </div>
|
|
<div class="line"><a name="l00705"></a><span class="lineno"> 705</span>  <span class="comment">// Perform a DFS from each root to compute the stamps.</span></div>
|
|
<div class="line"><a name="l00706"></a><span class="lineno"> 706</span>  <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> stamp = 0;</div>
|
|
<div class="line"><a name="l00707"></a><span class="lineno"> 707</span>  first_stamps_.<a class="code" href="classabsl_1_1_strong_vector.html#a4e3670a285a3642eaa07f66766cffa72">resize</a>(size);</div>
|
|
<div class="line"><a name="l00708"></a><span class="lineno"> 708</span>  last_stamps_.<a class="code" href="classabsl_1_1_strong_vector.html#a4e3670a285a3642eaa07f66766cffa72">resize</a>(size);</div>
|
|
<div class="line"><a name="l00709"></a><span class="lineno"> 709</span>  marked_.<a class="code" href="classabsl_1_1_strong_vector.html#a184fe69018ae421dcf31c964bfe40576">assign</a>(size, <span class="keyword">false</span>);</div>
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|
<div class="line"><a name="l00710"></a><span class="lineno"> 710</span>  <span class="keywordflow">for</span> (LiteralIndex i(0); i < size; ++i) {</div>
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|
<div class="line"><a name="l00711"></a><span class="lineno"> 711</span>  <span class="keywordflow">if</span> (parents_[i] != i) <span class="keywordflow">continue</span>; <span class="comment">// Not a root.</span></div>
|
|
<div class="line"><a name="l00712"></a><span class="lineno"> 712</span>  <a class="code" href="base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006">DCHECK</a>(!marked_[i]);</div>
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|
<div class="line"><a name="l00713"></a><span class="lineno"> 713</span>  <span class="keyword">const</span> LiteralIndex tree_root = i;</div>
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|
<div class="line"><a name="l00714"></a><span class="lineno"> 714</span>  dfs_stack_.push_back(i);</div>
|
|
<div class="line"><a name="l00715"></a><span class="lineno"> 715</span>  <span class="keywordflow">while</span> (!dfs_stack_.empty()) {</div>
|
|
<div class="line"><a name="l00716"></a><span class="lineno"> 716</span>  <span class="keyword">const</span> LiteralIndex top = dfs_stack_.back();</div>
|
|
<div class="line"><a name="l00717"></a><span class="lineno"> 717</span>  <span class="keywordflow">if</span> (marked_[top]) {</div>
|
|
<div class="line"><a name="l00718"></a><span class="lineno"> 718</span>  dfs_stack_.pop_back();</div>
|
|
<div class="line"><a name="l00719"></a><span class="lineno"> 719</span>  last_stamps_[top] = stamp++;</div>
|
|
<div class="line"><a name="l00720"></a><span class="lineno"> 720</span>  <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l00721"></a><span class="lineno"> 721</span>  }</div>
|
|
<div class="line"><a name="l00722"></a><span class="lineno"> 722</span>  first_stamps_[top] = stamp++;</div>
|
|
<div class="line"><a name="l00723"></a><span class="lineno"> 723</span>  marked_[top] = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00724"></a><span class="lineno"> 724</span>  </div>
|
|
<div class="line"><a name="l00725"></a><span class="lineno"> 725</span>  <span class="comment">// Failed literal detection. If the negation of top is in the same</span></div>
|
|
<div class="line"><a name="l00726"></a><span class="lineno"> 726</span>  <span class="comment">// tree, we can fix the LCA of top and its negation to false.</span></div>
|
|
<div class="line"><a name="l00727"></a><span class="lineno"> 727</span>  <span class="keywordflow">if</span> (marked_[<a class="code" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a>(top).NegatedIndex()] &&</div>
|
|
<div class="line"><a name="l00728"></a><span class="lineno"> 728</span>  first_stamps_[<a class="code" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a>(top).NegatedIndex()] >=</div>
|
|
<div class="line"><a name="l00729"></a><span class="lineno"> 729</span>  first_stamps_[tree_root]) {</div>
|
|
<div class="line"><a name="l00730"></a><span class="lineno"> 730</span>  <span class="comment">// Find the LCA.</span></div>
|
|
<div class="line"><a name="l00731"></a><span class="lineno"> 731</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> first_stamp = first_stamps_[<a class="code" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a>(top).<a class="code" href="classoperations__research_1_1sat_1_1_literal.html#a239e1315c4e975a35537790ba0d913a7">NegatedIndex</a>()];</div>
|
|
<div class="line"><a name="l00732"></a><span class="lineno"> 732</span>  LiteralIndex lca = top;</div>
|
|
<div class="line"><a name="l00733"></a><span class="lineno"> 733</span>  <span class="keywordflow">while</span> (first_stamps_[lca] > first_stamp) {</div>
|
|
<div class="line"><a name="l00734"></a><span class="lineno"> 734</span>  lca = parents_[lca];</div>
|
|
<div class="line"><a name="l00735"></a><span class="lineno"> 735</span>  }</div>
|
|
<div class="line"><a name="l00736"></a><span class="lineno"> 736</span>  ++num_fixed_;</div>
|
|
<div class="line"><a name="l00737"></a><span class="lineno"> 737</span>  <span class="keywordflow">if</span> (!clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#a0ddf4dc22639ee58f75985d875d1fd2d">InprocessingFixLiteral</a>(<a class="code" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a>(lca).Negated())) {</div>
|
|
<div class="line"><a name="l00738"></a><span class="lineno"> 738</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00739"></a><span class="lineno"> 739</span>  }</div>
|
|
<div class="line"><a name="l00740"></a><span class="lineno"> 740</span>  }</div>
|
|
<div class="line"><a name="l00741"></a><span class="lineno"> 741</span>  </div>
|
|
<div class="line"><a name="l00742"></a><span class="lineno"> 742</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> end = starts_[top + 1]; <span class="comment">// Ok with sentinel.</span></div>
|
|
<div class="line"><a name="l00743"></a><span class="lineno"> 743</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> j = starts_[top]; j < end; ++j) {</div>
|
|
<div class="line"><a name="l00744"></a><span class="lineno"> 744</span>  <a class="code" href="base_2logging_8h.html#a46e69120fbd3b36e6960e096d23b66f0">DCHECK_NE</a>(top, children_[j]); <span class="comment">// We removed leaf self-loop.</span></div>
|
|
<div class="line"><a name="l00745"></a><span class="lineno"> 745</span>  <a class="code" href="base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006">DCHECK</a>(!marked_[children_[j]]); <span class="comment">// This is a tree.</span></div>
|
|
<div class="line"><a name="l00746"></a><span class="lineno"> 746</span>  dfs_stack_.push_back(children_[j]);</div>
|
|
<div class="line"><a name="l00747"></a><span class="lineno"> 747</span>  }</div>
|
|
<div class="line"><a name="l00748"></a><span class="lineno"> 748</span>  }</div>
|
|
<div class="line"><a name="l00749"></a><span class="lineno"> 749</span>  }</div>
|
|
<div class="line"><a name="l00750"></a><span class="lineno"> 750</span>  <a class="code" href="base_2logging_8h.html#ae89df3243bbb8341130c7b3f44145ea0">DCHECK_EQ</a>(stamp, 2 * size);</div>
|
|
<div class="line"><a name="l00751"></a><span class="lineno"> 751</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00752"></a><span class="lineno"> 752</span> }</div>
|
|
<div class="line"><a name="l00753"></a><span class="lineno"> 753</span>  </div>
|
|
<div class="line"><a name="l00754"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_stamping_simplifier.html#a5ea60f6738dfbc19da6098ea7e706fae"> 754</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_stamping_simplifier.html#a5ea60f6738dfbc19da6098ea7e706fae">StampingSimplifier::ProcessClauses</a>() {</div>
|
|
<div class="line"><a name="l00755"></a><span class="lineno"> 755</span>  <span class="keyword">struct </span>Entry {</div>
|
|
<div class="line"><a name="l00756"></a><span class="lineno"> 756</span>  <span class="keywordtype">int</span> i; <span class="comment">// Index in the clause.</span></div>
|
|
<div class="line"><a name="l00757"></a><span class="lineno"> 757</span>  <span class="keywordtype">bool</span> is_negated; <span class="comment">// Correspond to clause[i] or clause[i].Negated();</span></div>
|
|
<div class="line"><a name="l00758"></a><span class="lineno"> 758</span>  <span class="keywordtype">int</span> start; <span class="comment">// Note that all start stamps are different.</span></div>
|
|
<div class="line"><a name="l00759"></a><span class="lineno"> 759</span>  <span class="keywordtype">int</span> end;</div>
|
|
<div class="line"><a name="l00760"></a><span class="lineno"> 760</span>  <span class="keywordtype">bool</span> operator<(<span class="keyword">const</span> Entry& o)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> start < o.start; }</div>
|
|
<div class="line"><a name="l00761"></a><span class="lineno"> 761</span>  };</div>
|
|
<div class="line"><a name="l00762"></a><span class="lineno"> 762</span>  std::vector<int> to_remove;</div>
|
|
<div class="line"><a name="l00763"></a><span class="lineno"> 763</span>  std::vector<Literal> new_clause;</div>
|
|
<div class="line"><a name="l00764"></a><span class="lineno"> 764</span>  std::vector<Entry> entries;</div>
|
|
<div class="line"><a name="l00765"></a><span class="lineno"> 765</span>  clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#ae234022ee7c496416290d1946f56e1ad">DeleteRemovedClauses</a>();</div>
|
|
<div class="line"><a name="l00766"></a><span class="lineno"> 766</span>  clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#a38c7c4ca12035b254d9497a401606e0c">DetachAllClauses</a>();</div>
|
|
<div class="line"><a name="l00767"></a><span class="lineno"> 767</span>  <span class="keywordflow">for</span> (<a class="code" href="classoperations__research_1_1sat_1_1_sat_clause.html">SatClause</a>* clause : clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#a0569d77056e622964bd02dd901950ede">AllClausesInCreationOrder</a>()) {</div>
|
|
<div class="line"><a name="l00768"></a><span class="lineno"> 768</span>  <span class="keyword">const</span> <span class="keyword">auto</span> span = clause->AsSpan();</div>
|
|
<div class="line"><a name="l00769"></a><span class="lineno"> 769</span>  <span class="keywordflow">if</span> (span.empty()) <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l00770"></a><span class="lineno"> 770</span>  </div>
|
|
<div class="line"><a name="l00771"></a><span class="lineno"> 771</span>  <span class="comment">// Note that we might fix literal as we perform the loop here, so we do</span></div>
|
|
<div class="line"><a name="l00772"></a><span class="lineno"> 772</span>  <span class="comment">// need to deal with them.</span></div>
|
|
<div class="line"><a name="l00773"></a><span class="lineno"> 773</span>  <span class="comment">//</span></div>
|
|
<div class="line"><a name="l00774"></a><span class="lineno"> 774</span>  <span class="comment">// For a and b in the clause, if not(a) => b is present, then the clause is</span></div>
|
|
<div class="line"><a name="l00775"></a><span class="lineno"> 775</span>  <span class="comment">// subsumed. If a => b, then a can be removed, and if not(a) => not(b) then</span></div>
|
|
<div class="line"><a name="l00776"></a><span class="lineno"> 776</span>  <span class="comment">// b can be removed. Nothing can be done if a => not(b).</span></div>
|
|
<div class="line"><a name="l00777"></a><span class="lineno"> 777</span>  entries.clear();</div>
|
|
<div class="line"><a name="l00778"></a><span class="lineno"> 778</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < span.size(); ++i) {</div>
|
|
<div class="line"><a name="l00779"></a><span class="lineno"> 779</span>  <span class="keywordflow">if</span> (assignment_.<a class="code" href="classoperations__research_1_1sat_1_1_variables_assignment.html#a5300129913f51dcb0b1c531e3248490e">LiteralIsTrue</a>(span[i])) {</div>
|
|
<div class="line"><a name="l00780"></a><span class="lineno"> 780</span>  clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#a287676c504a640a5569710d352ef6585">InprocessingRemoveClause</a>(clause);</div>
|
|
<div class="line"><a name="l00781"></a><span class="lineno"> 781</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l00782"></a><span class="lineno"> 782</span>  }</div>
|
|
<div class="line"><a name="l00783"></a><span class="lineno"> 783</span>  <span class="keywordflow">if</span> (assignment_.<a class="code" href="classoperations__research_1_1sat_1_1_variables_assignment.html#acfd1646011e643f58fd7dc66d9cc90a5">LiteralIsFalse</a>(span[i])) <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l00784"></a><span class="lineno"> 784</span>  entries.push_back({i, <span class="keyword">false</span>, first_stamps_[span[i].Index()],</div>
|
|
<div class="line"><a name="l00785"></a><span class="lineno"> 785</span>  last_stamps_[span[i].<a class="code" href="namespaceoperations__research_1_1glop.html#abec9e934a51aa2ab519684cc0f446a41">Index</a>()]});</div>
|
|
<div class="line"><a name="l00786"></a><span class="lineno"> 786</span>  entries.push_back({i, <span class="keyword">true</span>, first_stamps_[span[i].NegatedIndex()],</div>
|
|
<div class="line"><a name="l00787"></a><span class="lineno"> 787</span>  last_stamps_[span[i].NegatedIndex()]});</div>
|
|
<div class="line"><a name="l00788"></a><span class="lineno"> 788</span>  }</div>
|
|
<div class="line"><a name="l00789"></a><span class="lineno"> 789</span>  <span class="keywordflow">if</span> (clause->empty()) <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l00790"></a><span class="lineno"> 790</span>  </div>
|
|
<div class="line"><a name="l00791"></a><span class="lineno"> 791</span>  <span class="comment">// The sort should be dominant.</span></div>
|
|
<div class="line"><a name="l00792"></a><span class="lineno"> 792</span>  <span class="keywordflow">if</span> (!entries.empty()) {</div>
|
|
<div class="line"><a name="l00793"></a><span class="lineno"> 793</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> n = <span class="keyword">static_cast<</span><span class="keywordtype">double</span><span class="keyword">></span>(entries.size());</div>
|
|
<div class="line"><a name="l00794"></a><span class="lineno"> 794</span>  dtime_ += 1.5e-8 * n * std::log(n);</div>
|
|
<div class="line"><a name="l00795"></a><span class="lineno"> 795</span>  std::sort(entries.begin(), entries.end());</div>
|
|
<div class="line"><a name="l00796"></a><span class="lineno"> 796</span>  }</div>
|
|
<div class="line"><a name="l00797"></a><span class="lineno"> 797</span>  </div>
|
|
<div class="line"><a name="l00798"></a><span class="lineno"> 798</span>  Entry top_entry;</div>
|
|
<div class="line"><a name="l00799"></a><span class="lineno"> 799</span>  top_entry.end = -1; <span class="comment">// Sentinel.</span></div>
|
|
<div class="line"><a name="l00800"></a><span class="lineno"> 800</span>  to_remove.clear();</div>
|
|
<div class="line"><a name="l00801"></a><span class="lineno"> 801</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> Entry& e : entries) {</div>
|
|
<div class="line"><a name="l00802"></a><span class="lineno"> 802</span>  <span class="keywordflow">if</span> (e.end < top_entry.end) {</div>
|
|
<div class="line"><a name="l00803"></a><span class="lineno"> 803</span>  <span class="comment">// We found an implication: top_entry => this entry.</span></div>
|
|
<div class="line"><a name="l00804"></a><span class="lineno"> 804</span>  <span class="keyword">const</span> <a class="code" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a> lhs = top_entry.is_negated ? span[top_entry.i].<a class="code" href="classoperations__research_1_1sat_1_1_literal.html#a886e9c024f7209181c0a850b6e90c644">Negated</a>()</div>
|
|
<div class="line"><a name="l00805"></a><span class="lineno"> 805</span>  : span[top_entry.i];</div>
|
|
<div class="line"><a name="l00806"></a><span class="lineno"> 806</span>  <span class="keyword">const</span> <a class="code" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a> rhs = e.is_negated ? span[e.i].<a class="code" href="classoperations__research_1_1sat_1_1_literal.html#a886e9c024f7209181c0a850b6e90c644">Negated</a>() : span[e.i];</div>
|
|
<div class="line"><a name="l00807"></a><span class="lineno"> 807</span>  <a class="code" href="base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006">DCHECK</a>(<a class="code" href="classoperations__research_1_1sat_1_1_stamping_simplifier.html#a318a00d87baa05fd3e351fa688836de2">ImplicationIsInTree</a>(lhs, rhs));</div>
|
|
<div class="line"><a name="l00808"></a><span class="lineno"> 808</span>  </div>
|
|
<div class="line"><a name="l00809"></a><span class="lineno"> 809</span>  <span class="keywordflow">if</span> (top_entry.is_negated != e.is_negated) {</div>
|
|
<div class="line"><a name="l00810"></a><span class="lineno"> 810</span>  <span class="comment">// Failed literal?</span></div>
|
|
<div class="line"><a name="l00811"></a><span class="lineno"> 811</span>  <span class="keywordflow">if</span> (top_entry.i == e.i) {</div>
|
|
<div class="line"><a name="l00812"></a><span class="lineno"> 812</span>  ++num_fixed_;</div>
|
|
<div class="line"><a name="l00813"></a><span class="lineno"> 813</span>  <span class="keywordflow">if</span> (top_entry.is_negated) {</div>
|
|
<div class="line"><a name="l00814"></a><span class="lineno"> 814</span>  <span class="comment">// not(span[i]) => span[i] so span[i] true.</span></div>
|
|
<div class="line"><a name="l00815"></a><span class="lineno"> 815</span>  <span class="comment">// And the clause is satisfied (so we count as as subsumed).</span></div>
|
|
<div class="line"><a name="l00816"></a><span class="lineno"> 816</span>  <span class="keywordflow">if</span> (!clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#a0ddf4dc22639ee58f75985d875d1fd2d">InprocessingFixLiteral</a>(span[top_entry.i])) {</div>
|
|
<div class="line"><a name="l00817"></a><span class="lineno"> 817</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00818"></a><span class="lineno"> 818</span>  }</div>
|
|
<div class="line"><a name="l00819"></a><span class="lineno"> 819</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00820"></a><span class="lineno"> 820</span>  <span class="comment">// span[i] => not(span[i]) so span[i] false.</span></div>
|
|
<div class="line"><a name="l00821"></a><span class="lineno"> 821</span>  <span class="keywordflow">if</span> (!clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#a0ddf4dc22639ee58f75985d875d1fd2d">InprocessingFixLiteral</a>(</div>
|
|
<div class="line"><a name="l00822"></a><span class="lineno"> 822</span>  span[top_entry.i].Negated())) {</div>
|
|
<div class="line"><a name="l00823"></a><span class="lineno"> 823</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00824"></a><span class="lineno"> 824</span>  }</div>
|
|
<div class="line"><a name="l00825"></a><span class="lineno"> 825</span>  to_remove.push_back(top_entry.i);</div>
|
|
<div class="line"><a name="l00826"></a><span class="lineno"> 826</span>  <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l00827"></a><span class="lineno"> 827</span>  }</div>
|
|
<div class="line"><a name="l00828"></a><span class="lineno"> 828</span>  }</div>
|
|
<div class="line"><a name="l00829"></a><span class="lineno"> 829</span>  </div>
|
|
<div class="line"><a name="l00830"></a><span class="lineno"> 830</span>  <span class="comment">// not(a) => b : subsumption.</span></div>
|
|
<div class="line"><a name="l00831"></a><span class="lineno"> 831</span>  <span class="comment">// a => not(b), we cannot deduce anything, but it might make sense</span></div>
|
|
<div class="line"><a name="l00832"></a><span class="lineno"> 832</span>  <span class="comment">// to see if not(b) implies anything instead of just keeping</span></div>
|
|
<div class="line"><a name="l00833"></a><span class="lineno"> 833</span>  <span class="comment">// top_entry. See TODO below.</span></div>
|
|
<div class="line"><a name="l00834"></a><span class="lineno"> 834</span>  <span class="keywordflow">if</span> (top_entry.is_negated) {</div>
|
|
<div class="line"><a name="l00835"></a><span class="lineno"> 835</span>  num_subsumed_clauses_++;</div>
|
|
<div class="line"><a name="l00836"></a><span class="lineno"> 836</span>  clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#a287676c504a640a5569710d352ef6585">InprocessingRemoveClause</a>(clause);</div>
|
|
<div class="line"><a name="l00837"></a><span class="lineno"> 837</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l00838"></a><span class="lineno"> 838</span>  }</div>
|
|
<div class="line"><a name="l00839"></a><span class="lineno"> 839</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00840"></a><span class="lineno"> 840</span>  <a class="code" href="base_2logging_8h.html#ab25e01a2942b821d66371fc68d53f2eb">CHECK_NE</a>(top_entry.i, e.i);</div>
|
|
<div class="line"><a name="l00841"></a><span class="lineno"> 841</span>  <span class="keywordflow">if</span> (top_entry.is_negated) {</div>
|
|
<div class="line"><a name="l00842"></a><span class="lineno"> 842</span>  <span class="comment">// not(a) => not(b), we can remove b.</span></div>
|
|
<div class="line"><a name="l00843"></a><span class="lineno"> 843</span>  to_remove.push_back(e.i);</div>
|
|
<div class="line"><a name="l00844"></a><span class="lineno"> 844</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00845"></a><span class="lineno"> 845</span>  <span class="comment">// a => b, we can remove a.</span></div>
|
|
<div class="line"><a name="l00846"></a><span class="lineno"> 846</span>  <span class="comment">//</span></div>
|
|
<div class="line"><a name="l00847"></a><span class="lineno"> 847</span>  <span class="comment">// TODO(user): Note that it is okay to still use top_entry, but we</span></div>
|
|
<div class="line"><a name="l00848"></a><span class="lineno"> 848</span>  <span class="comment">// might miss the removal of b if b => c. Also the paper do things</span></div>
|
|
<div class="line"><a name="l00849"></a><span class="lineno"> 849</span>  <span class="comment">// differently. Make sure we don't miss any simplification</span></div>
|
|
<div class="line"><a name="l00850"></a><span class="lineno"> 850</span>  <span class="comment">// opportunites by not changing top_entry. Same in the other</span></div>
|
|
<div class="line"><a name="l00851"></a><span class="lineno"> 851</span>  <span class="comment">// branches.</span></div>
|
|
<div class="line"><a name="l00852"></a><span class="lineno"> 852</span>  to_remove.push_back(top_entry.i);</div>
|
|
<div class="line"><a name="l00853"></a><span class="lineno"> 853</span>  }</div>
|
|
<div class="line"><a name="l00854"></a><span class="lineno"> 854</span>  }</div>
|
|
<div class="line"><a name="l00855"></a><span class="lineno"> 855</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00856"></a><span class="lineno"> 856</span>  top_entry = e;</div>
|
|
<div class="line"><a name="l00857"></a><span class="lineno"> 857</span>  }</div>
|
|
<div class="line"><a name="l00858"></a><span class="lineno"> 858</span>  }</div>
|
|
<div class="line"><a name="l00859"></a><span class="lineno"> 859</span>  </div>
|
|
<div class="line"><a name="l00860"></a><span class="lineno"> 860</span>  <span class="keywordflow">if</span> (clause->empty()) <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l00861"></a><span class="lineno"> 861</span>  </div>
|
|
<div class="line"><a name="l00862"></a><span class="lineno"> 862</span>  <span class="comment">// Strengthen the clause.</span></div>
|
|
<div class="line"><a name="l00863"></a><span class="lineno"> 863</span>  <span class="keywordflow">if</span> (!to_remove.empty() || entries.size() < span.size()) {</div>
|
|
<div class="line"><a name="l00864"></a><span class="lineno"> 864</span>  new_clause.clear();</div>
|
|
<div class="line"><a name="l00865"></a><span class="lineno"> 865</span>  <a class="code" href="namespacegtl.html#a288a1dc92da5d3ad62d4bc4cec9e8b1d">gtl::STLSortAndRemoveDuplicates</a>(&to_remove);</div>
|
|
<div class="line"><a name="l00866"></a><span class="lineno"> 866</span>  <span class="keywordtype">int</span> to_remove_index = 0;</div>
|
|
<div class="line"><a name="l00867"></a><span class="lineno"> 867</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < span.size(); ++i) {</div>
|
|
<div class="line"><a name="l00868"></a><span class="lineno"> 868</span>  <span class="keywordflow">if</span> (to_remove_index < to_remove.size() &&</div>
|
|
<div class="line"><a name="l00869"></a><span class="lineno"> 869</span>  i == to_remove[to_remove_index]) {</div>
|
|
<div class="line"><a name="l00870"></a><span class="lineno"> 870</span>  ++to_remove_index;</div>
|
|
<div class="line"><a name="l00871"></a><span class="lineno"> 871</span>  <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l00872"></a><span class="lineno"> 872</span>  }</div>
|
|
<div class="line"><a name="l00873"></a><span class="lineno"> 873</span>  <span class="keywordflow">if</span> (assignment_.<a class="code" href="classoperations__research_1_1sat_1_1_variables_assignment.html#a5300129913f51dcb0b1c531e3248490e">LiteralIsTrue</a>(span[i])) {</div>
|
|
<div class="line"><a name="l00874"></a><span class="lineno"> 874</span>  clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#a287676c504a640a5569710d352ef6585">InprocessingRemoveClause</a>(clause);</div>
|
|
<div class="line"><a name="l00875"></a><span class="lineno"> 875</span>  <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l00876"></a><span class="lineno"> 876</span>  }</div>
|
|
<div class="line"><a name="l00877"></a><span class="lineno"> 877</span>  <span class="keywordflow">if</span> (assignment_.<a class="code" href="classoperations__research_1_1sat_1_1_variables_assignment.html#acfd1646011e643f58fd7dc66d9cc90a5">LiteralIsFalse</a>(span[i])) <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l00878"></a><span class="lineno"> 878</span>  new_clause.push_back(span[i]);</div>
|
|
<div class="line"><a name="l00879"></a><span class="lineno"> 879</span>  }</div>
|
|
<div class="line"><a name="l00880"></a><span class="lineno"> 880</span>  num_removed_literals_ += span.size() - new_clause.size();</div>
|
|
<div class="line"><a name="l00881"></a><span class="lineno"> 881</span>  <span class="keywordflow">if</span> (!clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#ab17b31190c5ab58a1334139848335283">InprocessingRewriteClause</a>(clause, new_clause)) {</div>
|
|
<div class="line"><a name="l00882"></a><span class="lineno"> 882</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00883"></a><span class="lineno"> 883</span>  }</div>
|
|
<div class="line"><a name="l00884"></a><span class="lineno"> 884</span>  }</div>
|
|
<div class="line"><a name="l00885"></a><span class="lineno"> 885</span>  }</div>
|
|
<div class="line"><a name="l00886"></a><span class="lineno"> 886</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00887"></a><span class="lineno"> 887</span> }</div>
|
|
<div class="line"><a name="l00888"></a><span class="lineno"> 888</span>  </div>
|
|
<div class="line"><a name="l00889"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_blocked_clause_simplifier.html#ad30a040fd97f2cb710bb44c9f048a341"> 889</a></span> <span class="keywordtype">void</span> <a class="code" href="classoperations__research_1_1sat_1_1_blocked_clause_simplifier.html#ad30a040fd97f2cb710bb44c9f048a341">BlockedClauseSimplifier::DoOneRound</a>(<span class="keywordtype">bool</span> log_info) {</div>
|
|
<div class="line"><a name="l00890"></a><span class="lineno"> 890</span>  <a class="code" href="class_wall_timer.html">WallTimer</a> <a class="code" href="cp__model__solver_8cc.html#ace0951799e72ee99fc07d5e509bc7cbf">wall_timer</a>;</div>
|
|
<div class="line"><a name="l00891"></a><span class="lineno"> 891</span>  <a class="code" href="cp__model__solver_8cc.html#ace0951799e72ee99fc07d5e509bc7cbf">wall_timer</a>.<a class="code" href="class_wall_timer.html#a07aaf1227e4d645f15e0a964f54ef291">Start</a>();</div>
|
|
<div class="line"><a name="l00892"></a><span class="lineno"> 892</span>  </div>
|
|
<div class="line"><a name="l00893"></a><span class="lineno"> 893</span>  dtime_ = 0.0;</div>
|
|
<div class="line"><a name="l00894"></a><span class="lineno"> 894</span>  num_blocked_clauses_ = 0;</div>
|
|
<div class="line"><a name="l00895"></a><span class="lineno"> 895</span>  num_inspected_literals_ = 0;</div>
|
|
<div class="line"><a name="l00896"></a><span class="lineno"> 896</span>  </div>
|
|
<div class="line"><a name="l00897"></a><span class="lineno"> 897</span>  InitializeForNewRound();</div>
|
|
<div class="line"><a name="l00898"></a><span class="lineno"> 898</span>  </div>
|
|
<div class="line"><a name="l00899"></a><span class="lineno"> 899</span>  <span class="keywordflow">while</span> (!time_limit_-><a class="code" href="classoperations__research_1_1_time_limit.html#a810d5f7aaf80cc09cf5a094e20c1aaca">LimitReached</a>() && !queue_.empty()) {</div>
|
|
<div class="line"><a name="l00900"></a><span class="lineno"> 900</span>  <span class="keyword">const</span> <a class="code" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a> l = queue_.front();</div>
|
|
<div class="line"><a name="l00901"></a><span class="lineno"> 901</span>  in_queue_[l.<a class="code" href="classoperations__research_1_1sat_1_1_literal.html#a4a11c7c4d7706c09de5e18707c3b5c62">Index</a>()] = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00902"></a><span class="lineno"> 902</span>  queue_.pop_front();</div>
|
|
<div class="line"><a name="l00903"></a><span class="lineno"> 903</span>  ProcessLiteral(l);</div>
|
|
<div class="line"><a name="l00904"></a><span class="lineno"> 904</span>  }</div>
|
|
<div class="line"><a name="l00905"></a><span class="lineno"> 905</span>  </div>
|
|
<div class="line"><a name="l00906"></a><span class="lineno"> 906</span>  <span class="comment">// Release some memory.</span></div>
|
|
<div class="line"><a name="l00907"></a><span class="lineno"> 907</span>  literal_to_clauses_.<a class="code" href="classabsl_1_1_strong_vector.html#ac8bb3912a3ce86b15842e79d0b421204">clear</a>();</div>
|
|
<div class="line"><a name="l00908"></a><span class="lineno"> 908</span>  </div>
|
|
<div class="line"><a name="l00909"></a><span class="lineno"> 909</span>  dtime_ += 1e-8 * num_inspected_literals_;</div>
|
|
<div class="line"><a name="l00910"></a><span class="lineno"> 910</span>  time_limit_-><a class="code" href="classoperations__research_1_1_time_limit.html#af90cfd1fc238433fc303ee28c5914eb9">AdvanceDeterministicTime</a>(dtime_);</div>
|
|
<div class="line"><a name="l00911"></a><span class="lineno"> 911</span>  log_info |= <a class="code" href="vlog__is__on_8h.html#a956152cad330225654d128f35c00efce">VLOG_IS_ON</a>(1);</div>
|
|
<div class="line"><a name="l00912"></a><span class="lineno"> 912</span>  <a class="code" href="base_2logging_8h.html#a09f7d88282cf92c9f231270ac113e5c6">LOG_IF</a>(<a class="code" href="log__severity_8h.html#ab4a2cbab234914b320b7fae11b6e8cb9">INFO</a>, log_info) << <span class="stringliteral">"Blocked clause. num_blocked_clauses: "</span></div>
|
|
<div class="line"><a name="l00913"></a><span class="lineno"> 913</span>  << num_blocked_clauses_ << <span class="stringliteral">" dtime: "</span> << dtime_</div>
|
|
<div class="line"><a name="l00914"></a><span class="lineno"> 914</span>  << <span class="stringliteral">" wtime: "</span> << <a class="code" href="cp__model__solver_8cc.html#ace0951799e72ee99fc07d5e509bc7cbf">wall_timer</a>.<a class="code" href="class_wall_timer.html#aec56fe080959ecebec3feaed9dafde84">Get</a>();</div>
|
|
<div class="line"><a name="l00915"></a><span class="lineno"> 915</span> }</div>
|
|
<div class="line"><a name="l00916"></a><span class="lineno"> 916</span>  </div>
|
|
<div class="line"><a name="l00917"></a><span class="lineno"> 917</span> <span class="keywordtype">void</span> BlockedClauseSimplifier::InitializeForNewRound() {</div>
|
|
<div class="line"><a name="l00918"></a><span class="lineno"> 918</span>  clauses_.clear();</div>
|
|
<div class="line"><a name="l00919"></a><span class="lineno"> 919</span>  clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#ae234022ee7c496416290d1946f56e1ad">DeleteRemovedClauses</a>();</div>
|
|
<div class="line"><a name="l00920"></a><span class="lineno"> 920</span>  clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#a38c7c4ca12035b254d9497a401606e0c">DetachAllClauses</a>();</div>
|
|
<div class="line"><a name="l00921"></a><span class="lineno"> 921</span>  <span class="keywordflow">for</span> (<a class="code" href="classoperations__research_1_1sat_1_1_sat_clause.html">SatClause</a>* c : clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#a0569d77056e622964bd02dd901950ede">AllClausesInCreationOrder</a>()) {</div>
|
|
<div class="line"><a name="l00922"></a><span class="lineno"> 922</span>  <span class="comment">// We ignore redundant clause. This shouldn't cause any validity issue.</span></div>
|
|
<div class="line"><a name="l00923"></a><span class="lineno"> 923</span>  <span class="keywordflow">if</span> (clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#ab054db78fc1b1e1681d2fc4e9fd1ca45">IsRemovable</a>(c)) <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l00924"></a><span class="lineno"> 924</span>  </div>
|
|
<div class="line"><a name="l00925"></a><span class="lineno"> 925</span>  clauses_.push_back(c);</div>
|
|
<div class="line"><a name="l00926"></a><span class="lineno"> 926</span>  }</div>
|
|
<div class="line"><a name="l00927"></a><span class="lineno"> 927</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> num_literals = clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#a44c239ce3ac9f4886aa735ae3071a2f2">literal_size</a>();</div>
|
|
<div class="line"><a name="l00928"></a><span class="lineno"> 928</span>  </div>
|
|
<div class="line"><a name="l00929"></a><span class="lineno"> 929</span>  <span class="comment">// TODO(user): process in order of increasing number of clause that contains</span></div>
|
|
<div class="line"><a name="l00930"></a><span class="lineno"> 930</span>  <span class="comment">// not(l)?</span></div>
|
|
<div class="line"><a name="l00931"></a><span class="lineno"> 931</span>  in_queue_.<a class="code" href="classabsl_1_1_strong_vector.html#a184fe69018ae421dcf31c964bfe40576">assign</a>(num_literals, <span class="keyword">true</span>);</div>
|
|
<div class="line"><a name="l00932"></a><span class="lineno"> 932</span>  <span class="keywordflow">for</span> (LiteralIndex l(0); l < num_literals; ++l) {</div>
|
|
<div class="line"><a name="l00933"></a><span class="lineno"> 933</span>  queue_.push_back(Literal(l));</div>
|
|
<div class="line"><a name="l00934"></a><span class="lineno"> 934</span>  }</div>
|
|
<div class="line"><a name="l00935"></a><span class="lineno"> 935</span>  </div>
|
|
<div class="line"><a name="l00936"></a><span class="lineno"> 936</span>  marked_.<a class="code" href="classabsl_1_1_strong_vector.html#a4e3670a285a3642eaa07f66766cffa72">resize</a>(num_literals);</div>
|
|
<div class="line"><a name="l00937"></a><span class="lineno"> 937</span>  <a class="code" href="base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006">DCHECK</a>(</div>
|
|
<div class="line"><a name="l00938"></a><span class="lineno"> 938</span>  std::all_of(marked_.<a class="code" href="classabsl_1_1_strong_vector.html#ad69bd11391be1a1dba5c8202259664f8">begin</a>(), marked_.<a class="code" href="classabsl_1_1_strong_vector.html#acad38d52497a975bfb6f2f6acd76631f">end</a>(), [](<span class="keywordtype">bool</span> <a class="code" href="constraint__solver_2table_8cc.html#a344010e26426d6a13411648d988bc9b6">b</a>) { return !b; }));</div>
|
|
<div class="line"><a name="l00939"></a><span class="lineno"> 939</span>  </div>
|
|
<div class="line"><a name="l00940"></a><span class="lineno"> 940</span>  <span class="comment">// TODO(user): because we don't create new clause here we can use a flat</span></div>
|
|
<div class="line"><a name="l00941"></a><span class="lineno"> 941</span>  <span class="comment">// vector for literal_to_clauses_.</span></div>
|
|
<div class="line"><a name="l00942"></a><span class="lineno"> 942</span>  literal_to_clauses_.<a class="code" href="classabsl_1_1_strong_vector.html#ac8bb3912a3ce86b15842e79d0b421204">clear</a>();</div>
|
|
<div class="line"><a name="l00943"></a><span class="lineno"> 943</span>  literal_to_clauses_.<a class="code" href="classabsl_1_1_strong_vector.html#a4e3670a285a3642eaa07f66766cffa72">resize</a>(num_literals);</div>
|
|
<div class="line"><a name="l00944"></a><span class="lineno"> 944</span>  <span class="keywordflow">for</span> (ClauseIndex i(0); i < clauses_.size(); ++i) {</div>
|
|
<div class="line"><a name="l00945"></a><span class="lineno"> 945</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> Literal l : clauses_[i]->AsSpan()) {</div>
|
|
<div class="line"><a name="l00946"></a><span class="lineno"> 946</span>  literal_to_clauses_[l.Index()].<a class="code" href="classabsl_1_1_strong_vector.html#a9263000d449fdccb6cb70b303063e60b">push_back</a>(i);</div>
|
|
<div class="line"><a name="l00947"></a><span class="lineno"> 947</span>  }</div>
|
|
<div class="line"><a name="l00948"></a><span class="lineno"> 948</span>  num_inspected_literals_ += clauses_[i]->size();</div>
|
|
<div class="line"><a name="l00949"></a><span class="lineno"> 949</span>  }</div>
|
|
<div class="line"><a name="l00950"></a><span class="lineno"> 950</span> }</div>
|
|
<div class="line"><a name="l00951"></a><span class="lineno"> 951</span>  </div>
|
|
<div class="line"><a name="l00952"></a><span class="lineno"> 952</span> <span class="keywordtype">void</span> BlockedClauseSimplifier::ProcessLiteral(Literal current_literal) {</div>
|
|
<div class="line"><a name="l00953"></a><span class="lineno"> 953</span>  <span class="keywordflow">if</span> (assignment_.<a class="code" href="classoperations__research_1_1sat_1_1_variables_assignment.html#a142694366986039454f53b38e8378815">LiteralIsAssigned</a>(current_literal)) <span class="keywordflow">return</span>;</div>
|
|
<div class="line"><a name="l00954"></a><span class="lineno"> 954</span>  <span class="keywordflow">if</span> (implication_graph_-><a class="code" href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#ad2d9e6c6ea7ab13e0d0002a035a6d308">IsRemoved</a>(current_literal)) <span class="keywordflow">return</span>;</div>
|
|
<div class="line"><a name="l00955"></a><span class="lineno"> 955</span>  </div>
|
|
<div class="line"><a name="l00956"></a><span class="lineno"> 956</span>  <span class="comment">// We want to check first that this clause will resolve to trivial clause with</span></div>
|
|
<div class="line"><a name="l00957"></a><span class="lineno"> 957</span>  <span class="comment">// all binary containing not(current_literal). So mark all literal l so that</span></div>
|
|
<div class="line"><a name="l00958"></a><span class="lineno"> 958</span>  <span class="comment">// current_literal => l.</span></div>
|
|
<div class="line"><a name="l00959"></a><span class="lineno"> 959</span>  <span class="comment">//</span></div>
|
|
<div class="line"><a name="l00960"></a><span class="lineno"> 960</span>  <span class="comment">// TODO(user): We do not need to redo that each time we reprocess</span></div>
|
|
<div class="line"><a name="l00961"></a><span class="lineno"> 961</span>  <span class="comment">// current_literal.</span></div>
|
|
<div class="line"><a name="l00962"></a><span class="lineno"> 962</span>  <span class="comment">//</span></div>
|
|
<div class="line"><a name="l00963"></a><span class="lineno"> 963</span>  <span class="comment">// TODO(user): Ignore redundant literals. That might require pushing</span></div>
|
|
<div class="line"><a name="l00964"></a><span class="lineno"> 964</span>  <span class="comment">// equivalence to the postsolve stack though. Better to simply remove</span></div>
|
|
<div class="line"><a name="l00965"></a><span class="lineno"> 965</span>  <span class="comment">// these equivalence if we are allowed to and update the postsolve then.</span></div>
|
|
<div class="line"><a name="l00966"></a><span class="lineno"> 966</span>  <span class="comment">//</span></div>
|
|
<div class="line"><a name="l00967"></a><span class="lineno"> 967</span>  <span class="comment">// TODO(user): Make this work in the presence of at most ones.</span></div>
|
|
<div class="line"><a name="l00968"></a><span class="lineno"> 968</span>  <span class="keywordtype">int</span> num_binary = 0;</div>
|
|
<div class="line"><a name="l00969"></a><span class="lineno"> 969</span>  <span class="keyword">const</span> std::vector<Literal>& implications =</div>
|
|
<div class="line"><a name="l00970"></a><span class="lineno"> 970</span>  implication_graph_-><a class="code" href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#a7eb6126b57ff4ab8246fe54f4e5550f4">DirectImplications</a>(current_literal);</div>
|
|
<div class="line"><a name="l00971"></a><span class="lineno"> 971</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> Literal l : implications) {</div>
|
|
<div class="line"><a name="l00972"></a><span class="lineno"> 972</span>  <span class="keywordflow">if</span> (l == current_literal) <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l00973"></a><span class="lineno"> 973</span>  ++num_binary;</div>
|
|
<div class="line"><a name="l00974"></a><span class="lineno"> 974</span>  marked_[l.Index()] = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00975"></a><span class="lineno"> 975</span>  }</div>
|
|
<div class="line"><a name="l00976"></a><span class="lineno"> 976</span>  </div>
|
|
<div class="line"><a name="l00977"></a><span class="lineno"> 977</span>  <span class="comment">// TODO(user): We could also mark a small clause containing</span></div>
|
|
<div class="line"><a name="l00978"></a><span class="lineno"> 978</span>  <span class="comment">// current_literal.Negated(), and make sure we only include in</span></div>
|
|
<div class="line"><a name="l00979"></a><span class="lineno"> 979</span>  <span class="comment">// clauses_to_process clauses that resolve trivially with that clause.</span></div>
|
|
<div class="line"><a name="l00980"></a><span class="lineno"> 980</span>  std::vector<ClauseIndex> clauses_to_process;</div>
|
|
<div class="line"><a name="l00981"></a><span class="lineno"> 981</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> ClauseIndex i : literal_to_clauses_[current_literal.Index()]) {</div>
|
|
<div class="line"><a name="l00982"></a><span class="lineno"> 982</span>  <span class="keywordflow">if</span> (clauses_[i]->empty()) <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l00983"></a><span class="lineno"> 983</span>  </div>
|
|
<div class="line"><a name="l00984"></a><span class="lineno"> 984</span>  <span class="comment">// Blocked with respect to binary clause only? all marked binary should have</span></div>
|
|
<div class="line"><a name="l00985"></a><span class="lineno"> 985</span>  <span class="comment">// their negation in clause.</span></div>
|
|
<div class="line"><a name="l00986"></a><span class="lineno"> 986</span>  <span class="comment">//</span></div>
|
|
<div class="line"><a name="l00987"></a><span class="lineno"> 987</span>  <span class="comment">// TODO(user): Abort if size left is too small.</span></div>
|
|
<div class="line"><a name="l00988"></a><span class="lineno"> 988</span>  <span class="keywordflow">if</span> (num_binary > 0) {</div>
|
|
<div class="line"><a name="l00989"></a><span class="lineno"> 989</span>  <span class="keywordflow">if</span> (clauses_[i]->size() <= num_binary) <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l00990"></a><span class="lineno"> 990</span>  <span class="keywordtype">int</span> num_with_negation_marked = 0;</div>
|
|
<div class="line"><a name="l00991"></a><span class="lineno"> 991</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> Literal l : clauses_[i]->AsSpan()) {</div>
|
|
<div class="line"><a name="l00992"></a><span class="lineno"> 992</span>  <span class="keywordflow">if</span> (l == current_literal) <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l00993"></a><span class="lineno"> 993</span>  <span class="keywordflow">if</span> (marked_[l.NegatedIndex()]) {</div>
|
|
<div class="line"><a name="l00994"></a><span class="lineno"> 994</span>  ++num_with_negation_marked;</div>
|
|
<div class="line"><a name="l00995"></a><span class="lineno"> 995</span>  }</div>
|
|
<div class="line"><a name="l00996"></a><span class="lineno"> 996</span>  }</div>
|
|
<div class="line"><a name="l00997"></a><span class="lineno"> 997</span>  num_inspected_literals_ += clauses_[i]->size();</div>
|
|
<div class="line"><a name="l00998"></a><span class="lineno"> 998</span>  <span class="keywordflow">if</span> (num_with_negation_marked < num_binary) <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l00999"></a><span class="lineno"> 999</span>  }</div>
|
|
<div class="line"><a name="l01000"></a><span class="lineno"> 1000</span>  clauses_to_process.push_back(i);</div>
|
|
<div class="line"><a name="l01001"></a><span class="lineno"> 1001</span>  }</div>
|
|
<div class="line"><a name="l01002"></a><span class="lineno"> 1002</span>  </div>
|
|
<div class="line"><a name="l01003"></a><span class="lineno"> 1003</span>  <span class="comment">// Clear marked.</span></div>
|
|
<div class="line"><a name="l01004"></a><span class="lineno"> 1004</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> Literal l : implications) {</div>
|
|
<div class="line"><a name="l01005"></a><span class="lineno"> 1005</span>  marked_[l.Index()] = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l01006"></a><span class="lineno"> 1006</span>  }</div>
|
|
<div class="line"><a name="l01007"></a><span class="lineno"> 1007</span>  </div>
|
|
<div class="line"><a name="l01008"></a><span class="lineno"> 1008</span>  <span class="comment">// TODO(user): There is a possible optimization: If we mark all literals of</span></div>
|
|
<div class="line"><a name="l01009"></a><span class="lineno"> 1009</span>  <span class="comment">// all the clause to process, we can check that each clause containing</span></div>
|
|
<div class="line"><a name="l01010"></a><span class="lineno"> 1010</span>  <span class="comment">// current_literal.Negated() contains at least one of these literal negated</span></div>
|
|
<div class="line"><a name="l01011"></a><span class="lineno"> 1011</span>  <span class="comment">// other than current_literal. Otherwise none of the clause are blocked.</span></div>
|
|
<div class="line"><a name="l01012"></a><span class="lineno"> 1012</span>  <span class="comment">//</span></div>
|
|
<div class="line"><a name="l01013"></a><span class="lineno"> 1013</span>  <span class="comment">// TODO(user): If a clause cannot be blocked because of another clause, then</span></div>
|
|
<div class="line"><a name="l01014"></a><span class="lineno"> 1014</span>  <span class="comment">// when we call ProcessLiteral(current_literal.Negated()) we can skip some</span></div>
|
|
<div class="line"><a name="l01015"></a><span class="lineno"> 1015</span>  <span class="comment">// inspection.</span></div>
|
|
<div class="line"><a name="l01016"></a><span class="lineno"> 1016</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> ClauseIndex i : clauses_to_process) {</div>
|
|
<div class="line"><a name="l01017"></a><span class="lineno"> 1017</span>  <span class="keyword">const</span> <span class="keyword">auto</span> c = clauses_[i]->AsSpan();</div>
|
|
<div class="line"><a name="l01018"></a><span class="lineno"> 1018</span>  <span class="keywordflow">if</span> (ClauseIsBlocked(current_literal, c)) {</div>
|
|
<div class="line"><a name="l01019"></a><span class="lineno"> 1019</span>  <span class="comment">// Reprocess all clauses that have a negated literal in this one as</span></div>
|
|
<div class="line"><a name="l01020"></a><span class="lineno"> 1020</span>  <span class="comment">// some might be blocked now.</span></div>
|
|
<div class="line"><a name="l01021"></a><span class="lineno"> 1021</span>  <span class="comment">//</span></div>
|
|
<div class="line"><a name="l01022"></a><span class="lineno"> 1022</span>  <span class="comment">// TODO(user): Maybe we can remember for which (literal, clause) pair this</span></div>
|
|
<div class="line"><a name="l01023"></a><span class="lineno"> 1023</span>  <span class="comment">// was used as a certificate for "not-blocked" and just reprocess those,</span></div>
|
|
<div class="line"><a name="l01024"></a><span class="lineno"> 1024</span>  <span class="comment">// but it might be memory intensive.</span></div>
|
|
<div class="line"><a name="l01025"></a><span class="lineno"> 1025</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> Literal l : c) {</div>
|
|
<div class="line"><a name="l01026"></a><span class="lineno"> 1026</span>  <span class="keywordflow">if</span> (!in_queue_[l.NegatedIndex()]) {</div>
|
|
<div class="line"><a name="l01027"></a><span class="lineno"> 1027</span>  in_queue_[l.NegatedIndex()] = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01028"></a><span class="lineno"> 1028</span>  queue_.push_back(l.Negated());</div>
|
|
<div class="line"><a name="l01029"></a><span class="lineno"> 1029</span>  }</div>
|
|
<div class="line"><a name="l01030"></a><span class="lineno"> 1030</span>  }</div>
|
|
<div class="line"><a name="l01031"></a><span class="lineno"> 1031</span>  </div>
|
|
<div class="line"><a name="l01032"></a><span class="lineno"> 1032</span>  <span class="comment">// Add the clause to the postsolving set.</span></div>
|
|
<div class="line"><a name="l01033"></a><span class="lineno"> 1033</span>  postsolve_-><a class="code" href="structoperations__research_1_1sat_1_1_postsolve_clauses.html#ae70f41a3895b08dd35056d97eec1800e">AddClauseWithSpecialLiteral</a>(current_literal, c);</div>
|
|
<div class="line"><a name="l01034"></a><span class="lineno"> 1034</span>  </div>
|
|
<div class="line"><a name="l01035"></a><span class="lineno"> 1035</span>  <span class="comment">// We can remove a blocked clause.</span></div>
|
|
<div class="line"><a name="l01036"></a><span class="lineno"> 1036</span>  ++num_blocked_clauses_;</div>
|
|
<div class="line"><a name="l01037"></a><span class="lineno"> 1037</span>  clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#a287676c504a640a5569710d352ef6585">InprocessingRemoveClause</a>(clauses_[i]);</div>
|
|
<div class="line"><a name="l01038"></a><span class="lineno"> 1038</span>  }</div>
|
|
<div class="line"><a name="l01039"></a><span class="lineno"> 1039</span>  }</div>
|
|
<div class="line"><a name="l01040"></a><span class="lineno"> 1040</span> }</div>
|
|
<div class="line"><a name="l01041"></a><span class="lineno"> 1041</span>  </div>
|
|
<div class="line"><a name="l01042"></a><span class="lineno"> 1042</span> <span class="comment">// Note that this assume that the binary clauses have already been checked.</span></div>
|
|
<div class="line"><a name="l01043"></a><span class="lineno"> 1043</span> <span class="keywordtype">bool</span> BlockedClauseSimplifier::ClauseIsBlocked(</div>
|
|
<div class="line"><a name="l01044"></a><span class="lineno"> 1044</span>  Literal current_literal, absl::Span<const Literal> clause) {</div>
|
|
<div class="line"><a name="l01045"></a><span class="lineno"> 1045</span>  <span class="keywordtype">bool</span> is_blocked = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01046"></a><span class="lineno"> 1046</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> Literal l : clause) marked_[l.Index()] = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01047"></a><span class="lineno"> 1047</span>  </div>
|
|
<div class="line"><a name="l01048"></a><span class="lineno"> 1048</span>  <span class="comment">// TODO(user): For faster reprocessing of the same literal, we should move</span></div>
|
|
<div class="line"><a name="l01049"></a><span class="lineno"> 1049</span>  <span class="comment">// all clauses that are used in a non-blocked certificate first in the list.</span></div>
|
|
<div class="line"><a name="l01050"></a><span class="lineno"> 1050</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> ClauseIndex i :</div>
|
|
<div class="line"><a name="l01051"></a><span class="lineno"> 1051</span>  literal_to_clauses_[current_literal.NegatedIndex()]) {</div>
|
|
<div class="line"><a name="l01052"></a><span class="lineno"> 1052</span>  <span class="keywordflow">if</span> (clauses_[i]->empty()) <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l01053"></a><span class="lineno"> 1053</span>  <span class="keywordtype">bool</span> some_marked = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l01054"></a><span class="lineno"> 1054</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> Literal l : clauses_[i]->AsSpan()) {</div>
|
|
<div class="line"><a name="l01055"></a><span class="lineno"> 1055</span>  <span class="comment">// TODO(user): we can be faster here by only updating it at the end?</span></div>
|
|
<div class="line"><a name="l01056"></a><span class="lineno"> 1056</span>  ++num_inspected_literals_;</div>
|
|
<div class="line"><a name="l01057"></a><span class="lineno"> 1057</span>  </div>
|
|
<div class="line"><a name="l01058"></a><span class="lineno"> 1058</span>  <span class="keywordflow">if</span> (l == current_literal.Negated()) <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l01059"></a><span class="lineno"> 1059</span>  <span class="keywordflow">if</span> (marked_[l.NegatedIndex()]) {</div>
|
|
<div class="line"><a name="l01060"></a><span class="lineno"> 1060</span>  some_marked = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01061"></a><span class="lineno"> 1061</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l01062"></a><span class="lineno"> 1062</span>  }</div>
|
|
<div class="line"><a name="l01063"></a><span class="lineno"> 1063</span>  }</div>
|
|
<div class="line"><a name="l01064"></a><span class="lineno"> 1064</span>  <span class="keywordflow">if</span> (!some_marked) {</div>
|
|
<div class="line"><a name="l01065"></a><span class="lineno"> 1065</span>  is_blocked = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l01066"></a><span class="lineno"> 1066</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l01067"></a><span class="lineno"> 1067</span>  }</div>
|
|
<div class="line"><a name="l01068"></a><span class="lineno"> 1068</span>  }</div>
|
|
<div class="line"><a name="l01069"></a><span class="lineno"> 1069</span>  </div>
|
|
<div class="line"><a name="l01070"></a><span class="lineno"> 1070</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> Literal l : clause) marked_[l.Index()] = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l01071"></a><span class="lineno"> 1071</span>  <span class="keywordflow">return</span> is_blocked;</div>
|
|
<div class="line"><a name="l01072"></a><span class="lineno"> 1072</span> }</div>
|
|
<div class="line"><a name="l01073"></a><span class="lineno"> 1073</span>  </div>
|
|
<div class="line"><a name="l01074"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_bounded_variable_elimination.html#a1837f97f35b2db520af88985ea7e5666"> 1074</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_bounded_variable_elimination.html#a1837f97f35b2db520af88985ea7e5666">BoundedVariableElimination::DoOneRound</a>(<span class="keywordtype">bool</span> log_info) {</div>
|
|
<div class="line"><a name="l01075"></a><span class="lineno"> 1075</span>  <a class="code" href="class_wall_timer.html">WallTimer</a> <a class="code" href="cp__model__solver_8cc.html#ace0951799e72ee99fc07d5e509bc7cbf">wall_timer</a>;</div>
|
|
<div class="line"><a name="l01076"></a><span class="lineno"> 1076</span>  <a class="code" href="cp__model__solver_8cc.html#ace0951799e72ee99fc07d5e509bc7cbf">wall_timer</a>.<a class="code" href="class_wall_timer.html#a07aaf1227e4d645f15e0a964f54ef291">Start</a>();</div>
|
|
<div class="line"><a name="l01077"></a><span class="lineno"> 1077</span>  </div>
|
|
<div class="line"><a name="l01078"></a><span class="lineno"> 1078</span>  dtime_ = 0.0;</div>
|
|
<div class="line"><a name="l01079"></a><span class="lineno"> 1079</span>  num_inspected_literals_ = 0;</div>
|
|
<div class="line"><a name="l01080"></a><span class="lineno"> 1080</span>  num_eliminated_variables_ = 0;</div>
|
|
<div class="line"><a name="l01081"></a><span class="lineno"> 1081</span>  num_literals_diff_ = 0;</div>
|
|
<div class="line"><a name="l01082"></a><span class="lineno"> 1082</span>  num_clauses_diff_ = 0;</div>
|
|
<div class="line"><a name="l01083"></a><span class="lineno"> 1083</span>  num_simplifications_ = 0;</div>
|
|
<div class="line"><a name="l01084"></a><span class="lineno"> 1084</span>  num_blocked_clauses_ = 0;</div>
|
|
<div class="line"><a name="l01085"></a><span class="lineno"> 1085</span>  </div>
|
|
<div class="line"><a name="l01086"></a><span class="lineno"> 1086</span>  clauses_.clear();</div>
|
|
<div class="line"><a name="l01087"></a><span class="lineno"> 1087</span>  clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#ae234022ee7c496416290d1946f56e1ad">DeleteRemovedClauses</a>();</div>
|
|
<div class="line"><a name="l01088"></a><span class="lineno"> 1088</span>  clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#a38c7c4ca12035b254d9497a401606e0c">DetachAllClauses</a>();</div>
|
|
<div class="line"><a name="l01089"></a><span class="lineno"> 1089</span>  <span class="keywordflow">for</span> (<a class="code" href="classoperations__research_1_1sat_1_1_sat_clause.html">SatClause</a>* c : clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#a0569d77056e622964bd02dd901950ede">AllClausesInCreationOrder</a>()) {</div>
|
|
<div class="line"><a name="l01090"></a><span class="lineno"> 1090</span>  <span class="comment">// We ignore redundant clause. This shouldn't cause any validity issue.</span></div>
|
|
<div class="line"><a name="l01091"></a><span class="lineno"> 1091</span>  <span class="comment">// TODO(user): but we shouldn't keep clauses containing removed literals.</span></div>
|
|
<div class="line"><a name="l01092"></a><span class="lineno"> 1092</span>  <span class="comment">// It is still valid to do so, but it should be less efficient.</span></div>
|
|
<div class="line"><a name="l01093"></a><span class="lineno"> 1093</span>  <span class="keywordflow">if</span> (clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#ab054db78fc1b1e1681d2fc4e9fd1ca45">IsRemovable</a>(c)) <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l01094"></a><span class="lineno"> 1094</span>  </div>
|
|
<div class="line"><a name="l01095"></a><span class="lineno"> 1095</span>  clauses_.push_back(c);</div>
|
|
<div class="line"><a name="l01096"></a><span class="lineno"> 1096</span>  }</div>
|
|
<div class="line"><a name="l01097"></a><span class="lineno"> 1097</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> num_literals = clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#a44c239ce3ac9f4886aa735ae3071a2f2">literal_size</a>();</div>
|
|
<div class="line"><a name="l01098"></a><span class="lineno"> 1098</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> num_variables = num_literals / 2;</div>
|
|
<div class="line"><a name="l01099"></a><span class="lineno"> 1099</span>  </div>
|
|
<div class="line"><a name="l01100"></a><span class="lineno"> 1100</span>  literal_to_clauses_.<a class="code" href="classabsl_1_1_strong_vector.html#ac8bb3912a3ce86b15842e79d0b421204">clear</a>();</div>
|
|
<div class="line"><a name="l01101"></a><span class="lineno"> 1101</span>  literal_to_clauses_.<a class="code" href="classabsl_1_1_strong_vector.html#a4e3670a285a3642eaa07f66766cffa72">resize</a>(num_literals);</div>
|
|
<div class="line"><a name="l01102"></a><span class="lineno"> 1102</span>  literal_to_num_clauses_.<a class="code" href="classabsl_1_1_strong_vector.html#a184fe69018ae421dcf31c964bfe40576">assign</a>(num_literals, 0);</div>
|
|
<div class="line"><a name="l01103"></a><span class="lineno"> 1103</span>  <span class="keywordflow">for</span> (ClauseIndex i(0); i < clauses_.size(); ++i) {</div>
|
|
<div class="line"><a name="l01104"></a><span class="lineno"> 1104</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <a class="code" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a> l : clauses_[i]->AsSpan()) {</div>
|
|
<div class="line"><a name="l01105"></a><span class="lineno"> 1105</span>  literal_to_clauses_[l.Index()].<a class="code" href="classabsl_1_1_strong_vector.html#a9263000d449fdccb6cb70b303063e60b">push_back</a>(i);</div>
|
|
<div class="line"><a name="l01106"></a><span class="lineno"> 1106</span>  literal_to_num_clauses_[l.Index()]++;</div>
|
|
<div class="line"><a name="l01107"></a><span class="lineno"> 1107</span>  }</div>
|
|
<div class="line"><a name="l01108"></a><span class="lineno"> 1108</span>  num_inspected_literals_ += clauses_[i]->size();</div>
|
|
<div class="line"><a name="l01109"></a><span class="lineno"> 1109</span>  }</div>
|
|
<div class="line"><a name="l01110"></a><span class="lineno"> 1110</span>  </div>
|
|
<div class="line"><a name="l01111"></a><span class="lineno"> 1111</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> saved_trail_index = trail_-><a class="code" href="classoperations__research_1_1sat_1_1_trail.html#a8ef12397d1682615bc3108c397734179">Index</a>();</div>
|
|
<div class="line"><a name="l01112"></a><span class="lineno"> 1112</span>  propagation_index_ = trail_-><a class="code" href="classoperations__research_1_1sat_1_1_trail.html#a8ef12397d1682615bc3108c397734179">Index</a>();</div>
|
|
<div class="line"><a name="l01113"></a><span class="lineno"> 1113</span>  </div>
|
|
<div class="line"><a name="l01114"></a><span class="lineno"> 1114</span>  need_to_be_updated_.clear();</div>
|
|
<div class="line"><a name="l01115"></a><span class="lineno"> 1115</span>  in_need_to_be_updated_.<a class="code" href="classabsl_1_1_strong_vector.html#a4e3670a285a3642eaa07f66766cffa72">resize</a>(num_variables);</div>
|
|
<div class="line"><a name="l01116"></a><span class="lineno"> 1116</span>  queue_.<a class="code" href="classoperations__research_1_1_integer_priority_queue.html#a21cecbc35e3da9931f94afa3229354dc">Reserve</a>(num_variables);</div>
|
|
<div class="line"><a name="l01117"></a><span class="lineno"> 1117</span>  <span class="keywordflow">for</span> (BooleanVariable v(0); v < num_variables; ++v) {</div>
|
|
<div class="line"><a name="l01118"></a><span class="lineno"> 1118</span>  <span class="keywordflow">if</span> (assignment_.<a class="code" href="classoperations__research_1_1sat_1_1_variables_assignment.html#a49e751eb6f0e9babd957889bb8e7472d">VariableIsAssigned</a>(v)) <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l01119"></a><span class="lineno"> 1119</span>  <span class="keywordflow">if</span> (implication_graph_-><a class="code" href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#ad2d9e6c6ea7ab13e0d0002a035a6d308">IsRemoved</a>(<a class="code" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a>(v, <span class="keyword">true</span>))) <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l01120"></a><span class="lineno"> 1120</span>  UpdatePriorityQueue(v);</div>
|
|
<div class="line"><a name="l01121"></a><span class="lineno"> 1121</span>  }</div>
|
|
<div class="line"><a name="l01122"></a><span class="lineno"> 1122</span>  </div>
|
|
<div class="line"><a name="l01123"></a><span class="lineno"> 1123</span>  marked_.<a class="code" href="classabsl_1_1_strong_vector.html#a4e3670a285a3642eaa07f66766cffa72">resize</a>(num_literals);</div>
|
|
<div class="line"><a name="l01124"></a><span class="lineno"> 1124</span>  <a class="code" href="base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006">DCHECK</a>(</div>
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|
<div class="line"><a name="l01125"></a><span class="lineno"> 1125</span>  std::all_of(marked_.<a class="code" href="classabsl_1_1_strong_vector.html#ad69bd11391be1a1dba5c8202259664f8">begin</a>(), marked_.<a class="code" href="classabsl_1_1_strong_vector.html#acad38d52497a975bfb6f2f6acd76631f">end</a>(), [](<span class="keywordtype">bool</span> <a class="code" href="constraint__solver_2table_8cc.html#a344010e26426d6a13411648d988bc9b6">b</a>) { return !b; }));</div>
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<div class="line"><a name="l01126"></a><span class="lineno"> 1126</span>  </div>
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|
<div class="line"><a name="l01127"></a><span class="lineno"> 1127</span>  <span class="comment">// TODO(user): add a local dtime limit for the corner case where this take too</span></div>
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<div class="line"><a name="l01128"></a><span class="lineno"> 1128</span>  <span class="comment">// much time. We can adapt the limit depending on how much we want to spend on</span></div>
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|
<div class="line"><a name="l01129"></a><span class="lineno"> 1129</span>  <span class="comment">// inprocessing.</span></div>
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<div class="line"><a name="l01130"></a><span class="lineno"> 1130</span>  <span class="keywordflow">while</span> (!time_limit_-><a class="code" href="classoperations__research_1_1_time_limit.html#a810d5f7aaf80cc09cf5a094e20c1aaca">LimitReached</a>() && !queue_.<a class="code" href="classoperations__research_1_1_integer_priority_queue.html#a8e12342fc420701fbffd97025421575a">IsEmpty</a>()) {</div>
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<div class="line"><a name="l01131"></a><span class="lineno"> 1131</span>  <span class="keyword">const</span> BooleanVariable top = queue_.<a class="code" href="classoperations__research_1_1_integer_priority_queue.html#a8f1cb7a5e2de2945a3dcecd15a09a0a4">Top</a>().var;</div>
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<div class="line"><a name="l01132"></a><span class="lineno"> 1132</span>  queue_.<a class="code" href="classoperations__research_1_1_integer_priority_queue.html#a701a584ce72cccbcce9cb0656b6c898b">Pop</a>();</div>
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|
<div class="line"><a name="l01133"></a><span class="lineno"> 1133</span>  </div>
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|
<div class="line"><a name="l01134"></a><span class="lineno"> 1134</span>  <span class="comment">// Make sure we fix variables first if needed. Note that because new binary</span></div>
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<div class="line"><a name="l01135"></a><span class="lineno"> 1135</span>  <span class="comment">// clause might appear when we fix variables, we need a loop here.</span></div>
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|
<div class="line"><a name="l01136"></a><span class="lineno"> 1136</span>  <span class="comment">//</span></div>
|
|
<div class="line"><a name="l01137"></a><span class="lineno"> 1137</span>  <span class="comment">// TODO(user): we might also find new equivalent variable l => var => l</span></div>
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<div class="line"><a name="l01138"></a><span class="lineno"> 1138</span>  <span class="comment">// here, but for now we ignore those.</span></div>
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|
<div class="line"><a name="l01139"></a><span class="lineno"> 1139</span>  <span class="keywordtype">bool</span> is_unsat = <span class="keyword">false</span>;</div>
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|
<div class="line"><a name="l01140"></a><span class="lineno"> 1140</span>  <span class="keywordflow">if</span> (!Propagate()) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l01141"></a><span class="lineno"> 1141</span>  <span class="keywordflow">while</span> (implication_graph_-><a class="code" href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#abbf0624c5d966c4dcf29eece343e0592">FindFailedLiteralAroundVar</a>(top, &is_unsat)) {</div>
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|
<div class="line"><a name="l01142"></a><span class="lineno"> 1142</span>  <span class="keywordflow">if</span> (!Propagate()) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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|
<div class="line"><a name="l01143"></a><span class="lineno"> 1143</span>  }</div>
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|
<div class="line"><a name="l01144"></a><span class="lineno"> 1144</span>  <span class="keywordflow">if</span> (is_unsat) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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|
<div class="line"><a name="l01145"></a><span class="lineno"> 1145</span>  </div>
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|
<div class="line"><a name="l01146"></a><span class="lineno"> 1146</span>  <span class="keywordflow">if</span> (!CrossProduct(top)) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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|
<div class="line"><a name="l01147"></a><span class="lineno"> 1147</span>  </div>
|
|
<div class="line"><a name="l01148"></a><span class="lineno"> 1148</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> BooleanVariable v : need_to_be_updated_) {</div>
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|
<div class="line"><a name="l01149"></a><span class="lineno"> 1149</span>  in_need_to_be_updated_[v] = <span class="keyword">false</span>;</div>
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|
<div class="line"><a name="l01150"></a><span class="lineno"> 1150</span>  </div>
|
|
<div class="line"><a name="l01151"></a><span class="lineno"> 1151</span>  <span class="comment">// Currently we never re-add top if we just processed it.</span></div>
|
|
<div class="line"><a name="l01152"></a><span class="lineno"> 1152</span>  <span class="keywordflow">if</span> (v != top) UpdatePriorityQueue(v);</div>
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|
<div class="line"><a name="l01153"></a><span class="lineno"> 1153</span>  }</div>
|
|
<div class="line"><a name="l01154"></a><span class="lineno"> 1154</span>  in_need_to_be_updated_.<a class="code" href="classabsl_1_1_strong_vector.html#ac8bb3912a3ce86b15842e79d0b421204">clear</a>();</div>
|
|
<div class="line"><a name="l01155"></a><span class="lineno"> 1155</span>  need_to_be_updated_.clear();</div>
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|
<div class="line"><a name="l01156"></a><span class="lineno"> 1156</span>  }</div>
|
|
<div class="line"><a name="l01157"></a><span class="lineno"> 1157</span>  </div>
|
|
<div class="line"><a name="l01158"></a><span class="lineno"> 1158</span>  implication_graph_-><a class="code" href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#ab64429b401679aee0bbd618449a9152a">CleanupAllRemovedVariables</a>();</div>
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|
<div class="line"><a name="l01159"></a><span class="lineno"> 1159</span>  </div>
|
|
<div class="line"><a name="l01160"></a><span class="lineno"> 1160</span>  <span class="comment">// Remove all redundant clause containing a removed literal. This avoid to</span></div>
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|
<div class="line"><a name="l01161"></a><span class="lineno"> 1161</span>  <span class="comment">// re-introduce a removed literal via conflict learning.</span></div>
|
|
<div class="line"><a name="l01162"></a><span class="lineno"> 1162</span>  <span class="keywordflow">for</span> (<a class="code" href="classoperations__research_1_1sat_1_1_sat_clause.html">SatClause</a>* c : clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#a0569d77056e622964bd02dd901950ede">AllClausesInCreationOrder</a>()) {</div>
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|
<div class="line"><a name="l01163"></a><span class="lineno"> 1163</span>  <span class="keywordflow">if</span> (!clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#ab054db78fc1b1e1681d2fc4e9fd1ca45">IsRemovable</a>(c)) <span class="keywordflow">continue</span>;</div>
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|
<div class="line"><a name="l01164"></a><span class="lineno"> 1164</span>  <span class="keywordtype">bool</span> remove = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l01165"></a><span class="lineno"> 1165</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <a class="code" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a> l : c->AsSpan()) {</div>
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|
<div class="line"><a name="l01166"></a><span class="lineno"> 1166</span>  <span class="keywordflow">if</span> (implication_graph_-><a class="code" href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#ad2d9e6c6ea7ab13e0d0002a035a6d308">IsRemoved</a>(l)) {</div>
|
|
<div class="line"><a name="l01167"></a><span class="lineno"> 1167</span>  remove = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01168"></a><span class="lineno"> 1168</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l01169"></a><span class="lineno"> 1169</span>  }</div>
|
|
<div class="line"><a name="l01170"></a><span class="lineno"> 1170</span>  }</div>
|
|
<div class="line"><a name="l01171"></a><span class="lineno"> 1171</span>  <span class="keywordflow">if</span> (remove) clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#a287676c504a640a5569710d352ef6585">InprocessingRemoveClause</a>(c);</div>
|
|
<div class="line"><a name="l01172"></a><span class="lineno"> 1172</span>  }</div>
|
|
<div class="line"><a name="l01173"></a><span class="lineno"> 1173</span>  </div>
|
|
<div class="line"><a name="l01174"></a><span class="lineno"> 1174</span>  <span class="comment">// Release some memory.</span></div>
|
|
<div class="line"><a name="l01175"></a><span class="lineno"> 1175</span>  literal_to_clauses_.<a class="code" href="classabsl_1_1_strong_vector.html#ac8bb3912a3ce86b15842e79d0b421204">clear</a>();</div>
|
|
<div class="line"><a name="l01176"></a><span class="lineno"> 1176</span>  literal_to_num_clauses_.<a class="code" href="classabsl_1_1_strong_vector.html#ac8bb3912a3ce86b15842e79d0b421204">clear</a>();</div>
|
|
<div class="line"><a name="l01177"></a><span class="lineno"> 1177</span>  </div>
|
|
<div class="line"><a name="l01178"></a><span class="lineno"> 1178</span>  dtime_ += 1e-8 * num_inspected_literals_;</div>
|
|
<div class="line"><a name="l01179"></a><span class="lineno"> 1179</span>  time_limit_-><a class="code" href="classoperations__research_1_1_time_limit.html#af90cfd1fc238433fc303ee28c5914eb9">AdvanceDeterministicTime</a>(dtime_);</div>
|
|
<div class="line"><a name="l01180"></a><span class="lineno"> 1180</span>  log_info |= <a class="code" href="vlog__is__on_8h.html#a956152cad330225654d128f35c00efce">VLOG_IS_ON</a>(1);</div>
|
|
<div class="line"><a name="l01181"></a><span class="lineno"> 1181</span>  <a class="code" href="base_2logging_8h.html#a09f7d88282cf92c9f231270ac113e5c6">LOG_IF</a>(<a class="code" href="log__severity_8h.html#ab4a2cbab234914b320b7fae11b6e8cb9">INFO</a>, log_info) << <span class="stringliteral">"BVE."</span></div>
|
|
<div class="line"><a name="l01182"></a><span class="lineno"> 1182</span>  << <span class="stringliteral">" num_fixed: "</span></div>
|
|
<div class="line"><a name="l01183"></a><span class="lineno"> 1183</span>  << trail_-><a class="code" href="classoperations__research_1_1sat_1_1_trail.html#a8ef12397d1682615bc3108c397734179">Index</a>() - saved_trail_index</div>
|
|
<div class="line"><a name="l01184"></a><span class="lineno"> 1184</span>  << <span class="stringliteral">" num_simplified_literals: "</span> << num_simplifications_</div>
|
|
<div class="line"><a name="l01185"></a><span class="lineno"> 1185</span>  << <span class="stringliteral">" num_blocked_clauses_: "</span> << num_blocked_clauses_</div>
|
|
<div class="line"><a name="l01186"></a><span class="lineno"> 1186</span>  << <span class="stringliteral">" num_eliminations: "</span> << num_eliminated_variables_</div>
|
|
<div class="line"><a name="l01187"></a><span class="lineno"> 1187</span>  << <span class="stringliteral">" num_literals_diff: "</span> << num_literals_diff_</div>
|
|
<div class="line"><a name="l01188"></a><span class="lineno"> 1188</span>  << <span class="stringliteral">" num_clause_diff: "</span> << num_clauses_diff_</div>
|
|
<div class="line"><a name="l01189"></a><span class="lineno"> 1189</span>  << <span class="stringliteral">" dtime: "</span> << dtime_</div>
|
|
<div class="line"><a name="l01190"></a><span class="lineno"> 1190</span>  << <span class="stringliteral">" wtime: "</span> << <a class="code" href="cp__model__solver_8cc.html#ace0951799e72ee99fc07d5e509bc7cbf">wall_timer</a>.<a class="code" href="class_wall_timer.html#aec56fe080959ecebec3feaed9dafde84">Get</a>();</div>
|
|
<div class="line"><a name="l01191"></a><span class="lineno"> 1191</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01192"></a><span class="lineno"> 1192</span> }</div>
|
|
<div class="line"><a name="l01193"></a><span class="lineno"> 1193</span>  </div>
|
|
<div class="line"><a name="l01194"></a><span class="lineno"> 1194</span> <span class="keywordtype">bool</span> BoundedVariableElimination::RemoveLiteralFromClause(</div>
|
|
<div class="line"><a name="l01195"></a><span class="lineno"> 1195</span>  <a class="code" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a> lit, <a class="code" href="classoperations__research_1_1sat_1_1_sat_clause.html">SatClause</a>* sat_clause) {</div>
|
|
<div class="line"><a name="l01196"></a><span class="lineno"> 1196</span>  num_literals_diff_ -= sat_clause-><a class="code" href="classoperations__research_1_1sat_1_1_sat_clause.html#af9593d4a5ff4274efaf429cb4f9e57cc">size</a>();</div>
|
|
<div class="line"><a name="l01197"></a><span class="lineno"> 1197</span>  resolvant_.clear();</div>
|
|
<div class="line"><a name="l01198"></a><span class="lineno"> 1198</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <a class="code" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a> l : sat_clause-><a class="code" href="classoperations__research_1_1sat_1_1_sat_clause.html#a05691332c1a49213875440568a7580aa">AsSpan</a>()) {</div>
|
|
<div class="line"><a name="l01199"></a><span class="lineno"> 1199</span>  <span class="keywordflow">if</span> (l == lit || assignment_.<a class="code" href="classoperations__research_1_1sat_1_1_variables_assignment.html#acfd1646011e643f58fd7dc66d9cc90a5">LiteralIsFalse</a>(l)) {</div>
|
|
<div class="line"><a name="l01200"></a><span class="lineno"> 1200</span>  literal_to_num_clauses_[l.Index()]--;</div>
|
|
<div class="line"><a name="l01201"></a><span class="lineno"> 1201</span>  <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l01202"></a><span class="lineno"> 1202</span>  }</div>
|
|
<div class="line"><a name="l01203"></a><span class="lineno"> 1203</span>  <span class="keywordflow">if</span> (assignment_.<a class="code" href="classoperations__research_1_1sat_1_1_variables_assignment.html#a5300129913f51dcb0b1c531e3248490e">LiteralIsTrue</a>(l)) {</div>
|
|
<div class="line"><a name="l01204"></a><span class="lineno"> 1204</span>  num_clauses_diff_--;</div>
|
|
<div class="line"><a name="l01205"></a><span class="lineno"> 1205</span>  clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#a287676c504a640a5569710d352ef6585">InprocessingRemoveClause</a>(sat_clause);</div>
|
|
<div class="line"><a name="l01206"></a><span class="lineno"> 1206</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01207"></a><span class="lineno"> 1207</span>  }</div>
|
|
<div class="line"><a name="l01208"></a><span class="lineno"> 1208</span>  resolvant_.push_back(l);</div>
|
|
<div class="line"><a name="l01209"></a><span class="lineno"> 1209</span>  }</div>
|
|
<div class="line"><a name="l01210"></a><span class="lineno"> 1210</span>  <span class="keywordflow">if</span> (!clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#ab17b31190c5ab58a1334139848335283">InprocessingRewriteClause</a>(sat_clause, resolvant_)) {</div>
|
|
<div class="line"><a name="l01211"></a><span class="lineno"> 1211</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l01212"></a><span class="lineno"> 1212</span>  }</div>
|
|
<div class="line"><a name="l01213"></a><span class="lineno"> 1213</span>  <span class="keywordflow">if</span> (sat_clause-><a class="code" href="classoperations__research_1_1sat_1_1_sat_clause.html#a78c28538faebd5f023cd4511df6ffee4">empty</a>()) {</div>
|
|
<div class="line"><a name="l01214"></a><span class="lineno"> 1214</span>  --num_clauses_diff_;</div>
|
|
<div class="line"><a name="l01215"></a><span class="lineno"> 1215</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> Literal l : resolvant_) literal_to_num_clauses_[l.Index()]--;</div>
|
|
<div class="line"><a name="l01216"></a><span class="lineno"> 1216</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l01217"></a><span class="lineno"> 1217</span>  num_literals_diff_ += sat_clause-><a class="code" href="classoperations__research_1_1sat_1_1_sat_clause.html#af9593d4a5ff4274efaf429cb4f9e57cc">size</a>();</div>
|
|
<div class="line"><a name="l01218"></a><span class="lineno"> 1218</span>  }</div>
|
|
<div class="line"><a name="l01219"></a><span class="lineno"> 1219</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01220"></a><span class="lineno"> 1220</span> }</div>
|
|
<div class="line"><a name="l01221"></a><span class="lineno"> 1221</span>  </div>
|
|
<div class="line"><a name="l01222"></a><span class="lineno"> 1222</span> <span class="keywordtype">bool</span> BoundedVariableElimination::Propagate() {</div>
|
|
<div class="line"><a name="l01223"></a><span class="lineno"> 1223</span>  <span class="keywordflow">for</span> (; propagation_index_ < trail_-><a class="code" href="classoperations__research_1_1sat_1_1_trail.html#a8ef12397d1682615bc3108c397734179">Index</a>(); ++propagation_index_) {</div>
|
|
<div class="line"><a name="l01224"></a><span class="lineno"> 1224</span>  <span class="comment">// Make sure we always propagate the binary clauses first.</span></div>
|
|
<div class="line"><a name="l01225"></a><span class="lineno"> 1225</span>  <span class="keywordflow">if</span> (!implication_graph_-><a class="code" href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#a1f591be5334541874ba049873235f0a9">Propagate</a>(trail_)) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l01226"></a><span class="lineno"> 1226</span>  </div>
|
|
<div class="line"><a name="l01227"></a><span class="lineno"> 1227</span>  <span class="keyword">const</span> Literal l = (*trail_)[propagation_index_];</div>
|
|
<div class="line"><a name="l01228"></a><span class="lineno"> 1228</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> ClauseIndex <a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a> : literal_to_clauses_[l.Index()]) {</div>
|
|
<div class="line"><a name="l01229"></a><span class="lineno"> 1229</span>  <span class="keywordflow">if</span> (clauses_[<a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>]->empty()) <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l01230"></a><span class="lineno"> 1230</span>  num_clauses_diff_--;</div>
|
|
<div class="line"><a name="l01231"></a><span class="lineno"> 1231</span>  num_literals_diff_ -= clauses_[<a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>]->size();</div>
|
|
<div class="line"><a name="l01232"></a><span class="lineno"> 1232</span>  clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#a287676c504a640a5569710d352ef6585">InprocessingRemoveClause</a>(clauses_[<a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>]);</div>
|
|
<div class="line"><a name="l01233"></a><span class="lineno"> 1233</span>  }</div>
|
|
<div class="line"><a name="l01234"></a><span class="lineno"> 1234</span>  literal_to_clauses_[l.Index()].<a class="code" href="classabsl_1_1_strong_vector.html#ac8bb3912a3ce86b15842e79d0b421204">clear</a>();</div>
|
|
<div class="line"><a name="l01235"></a><span class="lineno"> 1235</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> ClauseIndex <a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a> : literal_to_clauses_[l.NegatedIndex()]) {</div>
|
|
<div class="line"><a name="l01236"></a><span class="lineno"> 1236</span>  <span class="keywordflow">if</span> (clauses_[<a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>]->empty()) <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l01237"></a><span class="lineno"> 1237</span>  <span class="keywordflow">if</span> (!RemoveLiteralFromClause(l.Negated(), clauses_[<a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>])) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l01238"></a><span class="lineno"> 1238</span>  }</div>
|
|
<div class="line"><a name="l01239"></a><span class="lineno"> 1239</span>  literal_to_clauses_[l.NegatedIndex()].<a class="code" href="classabsl_1_1_strong_vector.html#ac8bb3912a3ce86b15842e79d0b421204">clear</a>();</div>
|
|
<div class="line"><a name="l01240"></a><span class="lineno"> 1240</span>  }</div>
|
|
<div class="line"><a name="l01241"></a><span class="lineno"> 1241</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01242"></a><span class="lineno"> 1242</span> }</div>
|
|
<div class="line"><a name="l01243"></a><span class="lineno"> 1243</span>  </div>
|
|
<div class="line"><a name="l01244"></a><span class="lineno"> 1244</span> <span class="comment">// Note that we use the estimated size here to make it fast. It is okay if the</span></div>
|
|
<div class="line"><a name="l01245"></a><span class="lineno"> 1245</span> <span class="comment">// order of elimination is not perfect... We can improve on this later.</span></div>
|
|
<div class="line"><a name="l01246"></a><span class="lineno"> 1246</span> <span class="keywordtype">int</span> BoundedVariableElimination::NumClausesContaining(Literal l) {</div>
|
|
<div class="line"><a name="l01247"></a><span class="lineno"> 1247</span>  <span class="keywordflow">return</span> literal_to_num_clauses_[l.Index()] +</div>
|
|
<div class="line"><a name="l01248"></a><span class="lineno"> 1248</span>  implication_graph_-><a class="code" href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#afc581e906dd97aacce13dd14d6a12cf3">DirectImplicationsEstimatedSize</a>(l.Negated());</div>
|
|
<div class="line"><a name="l01249"></a><span class="lineno"> 1249</span> }</div>
|
|
<div class="line"><a name="l01250"></a><span class="lineno"> 1250</span>  </div>
|
|
<div class="line"><a name="l01251"></a><span class="lineno"> 1251</span> <span class="comment">// TODO(user): Only enqueue variable that can be removed.</span></div>
|
|
<div class="line"><a name="l01252"></a><span class="lineno"> 1252</span> <span class="keywordtype">void</span> BoundedVariableElimination::UpdatePriorityQueue(BooleanVariable <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>) {</div>
|
|
<div class="line"><a name="l01253"></a><span class="lineno"> 1253</span>  <span class="keywordflow">if</span> (assignment_.<a class="code" href="classoperations__research_1_1sat_1_1_variables_assignment.html#a49e751eb6f0e9babd957889bb8e7472d">VariableIsAssigned</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>)) <span class="keywordflow">return</span>;</div>
|
|
<div class="line"><a name="l01254"></a><span class="lineno"> 1254</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> priority = -NumClausesContaining(Literal(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, <span class="keyword">true</span>)) -</div>
|
|
<div class="line"><a name="l01255"></a><span class="lineno"> 1255</span>  NumClausesContaining(Literal(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, <span class="keyword">false</span>));</div>
|
|
<div class="line"><a name="l01256"></a><span class="lineno"> 1256</span>  <span class="keywordflow">if</span> (queue_.<a class="code" href="classoperations__research_1_1_integer_priority_queue.html#a06fe50b32a75c0a071b68ebbacb8f681">Contains</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>.value())) {</div>
|
|
<div class="line"><a name="l01257"></a><span class="lineno"> 1257</span>  queue_.<a class="code" href="classoperations__research_1_1_integer_priority_queue.html#a115ac0fc2fcd2f50cf756b94a329fb3c">ChangePriority</a>({<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, priority});</div>
|
|
<div class="line"><a name="l01258"></a><span class="lineno"> 1258</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l01259"></a><span class="lineno"> 1259</span>  queue_.<a class="code" href="classoperations__research_1_1_integer_priority_queue.html#a260b134ff6e3aa564e8ba1f879aea3d9">Add</a>({<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, priority});</div>
|
|
<div class="line"><a name="l01260"></a><span class="lineno"> 1260</span>  }</div>
|
|
<div class="line"><a name="l01261"></a><span class="lineno"> 1261</span> }</div>
|
|
<div class="line"><a name="l01262"></a><span class="lineno"> 1262</span>  </div>
|
|
<div class="line"><a name="l01263"></a><span class="lineno"> 1263</span> <span class="keywordtype">void</span> BoundedVariableElimination::DeleteClause(SatClause* sat_clause) {</div>
|
|
<div class="line"><a name="l01264"></a><span class="lineno"> 1264</span>  <span class="keyword">const</span> <span class="keyword">auto</span> clause = sat_clause->AsSpan();</div>
|
|
<div class="line"><a name="l01265"></a><span class="lineno"> 1265</span>  </div>
|
|
<div class="line"><a name="l01266"></a><span class="lineno"> 1266</span>  num_clauses_diff_--;</div>
|
|
<div class="line"><a name="l01267"></a><span class="lineno"> 1267</span>  num_literals_diff_ -= clause.size();</div>
|
|
<div class="line"><a name="l01268"></a><span class="lineno"> 1268</span>  </div>
|
|
<div class="line"><a name="l01269"></a><span class="lineno"> 1269</span>  <span class="comment">// Update literal <-> clause graph.</span></div>
|
|
<div class="line"><a name="l01270"></a><span class="lineno"> 1270</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> Literal l : clause) {</div>
|
|
<div class="line"><a name="l01271"></a><span class="lineno"> 1271</span>  literal_to_num_clauses_[l.Index()]--;</div>
|
|
<div class="line"><a name="l01272"></a><span class="lineno"> 1272</span>  <span class="keywordflow">if</span> (!in_need_to_be_updated_[l.Variable()]) {</div>
|
|
<div class="line"><a name="l01273"></a><span class="lineno"> 1273</span>  in_need_to_be_updated_[l.Variable()] = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01274"></a><span class="lineno"> 1274</span>  need_to_be_updated_.push_back(l.Variable());</div>
|
|
<div class="line"><a name="l01275"></a><span class="lineno"> 1275</span>  }</div>
|
|
<div class="line"><a name="l01276"></a><span class="lineno"> 1276</span>  }</div>
|
|
<div class="line"><a name="l01277"></a><span class="lineno"> 1277</span>  </div>
|
|
<div class="line"><a name="l01278"></a><span class="lineno"> 1278</span>  <span class="comment">// Lazy deletion of the clause.</span></div>
|
|
<div class="line"><a name="l01279"></a><span class="lineno"> 1279</span>  clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#a287676c504a640a5569710d352ef6585">InprocessingRemoveClause</a>(sat_clause);</div>
|
|
<div class="line"><a name="l01280"></a><span class="lineno"> 1280</span> }</div>
|
|
<div class="line"><a name="l01281"></a><span class="lineno"> 1281</span>  </div>
|
|
<div class="line"><a name="l01282"></a><span class="lineno"> 1282</span> <span class="keywordtype">void</span> BoundedVariableElimination::DeleteAllClausesContaining(Literal <a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>) {</div>
|
|
<div class="line"><a name="l01283"></a><span class="lineno"> 1283</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> ClauseIndex i : literal_to_clauses_[<a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>.Index()]) {</div>
|
|
<div class="line"><a name="l01284"></a><span class="lineno"> 1284</span>  <span class="keyword">const</span> <span class="keyword">auto</span> clause = clauses_[i]->AsSpan();</div>
|
|
<div class="line"><a name="l01285"></a><span class="lineno"> 1285</span>  <span class="keywordflow">if</span> (clause.empty()) <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l01286"></a><span class="lineno"> 1286</span>  postsolve_-><a class="code" href="structoperations__research_1_1sat_1_1_postsolve_clauses.html#ae70f41a3895b08dd35056d97eec1800e">AddClauseWithSpecialLiteral</a>(<a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>, clause);</div>
|
|
<div class="line"><a name="l01287"></a><span class="lineno"> 1287</span>  DeleteClause(clauses_[i]);</div>
|
|
<div class="line"><a name="l01288"></a><span class="lineno"> 1288</span>  }</div>
|
|
<div class="line"><a name="l01289"></a><span class="lineno"> 1289</span>  literal_to_clauses_[<a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>.Index()].<a class="code" href="classabsl_1_1_strong_vector.html#ac8bb3912a3ce86b15842e79d0b421204">clear</a>();</div>
|
|
<div class="line"><a name="l01290"></a><span class="lineno"> 1290</span> }</div>
|
|
<div class="line"><a name="l01291"></a><span class="lineno"> 1291</span>  </div>
|
|
<div class="line"><a name="l01292"></a><span class="lineno"> 1292</span> <span class="keywordtype">void</span> BoundedVariableElimination::AddClause(absl::Span<const Literal> clause) {</div>
|
|
<div class="line"><a name="l01293"></a><span class="lineno"> 1293</span>  SatClause* pt = clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#a74971b631e1b357b2f440dff321b5c9b">InprocessingAddClause</a>(clause);</div>
|
|
<div class="line"><a name="l01294"></a><span class="lineno"> 1294</span>  <span class="keywordflow">if</span> (pt == <span class="keyword">nullptr</span>) <span class="keywordflow">return</span>;</div>
|
|
<div class="line"><a name="l01295"></a><span class="lineno"> 1295</span>  </div>
|
|
<div class="line"><a name="l01296"></a><span class="lineno"> 1296</span>  num_clauses_diff_++;</div>
|
|
<div class="line"><a name="l01297"></a><span class="lineno"> 1297</span>  num_literals_diff_ += clause.size();</div>
|
|
<div class="line"><a name="l01298"></a><span class="lineno"> 1298</span>  </div>
|
|
<div class="line"><a name="l01299"></a><span class="lineno"> 1299</span>  <span class="keyword">const</span> ClauseIndex <a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>(clauses_.size());</div>
|
|
<div class="line"><a name="l01300"></a><span class="lineno"> 1300</span>  clauses_.push_back(pt);</div>
|
|
<div class="line"><a name="l01301"></a><span class="lineno"> 1301</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> Literal l : clause) {</div>
|
|
<div class="line"><a name="l01302"></a><span class="lineno"> 1302</span>  literal_to_num_clauses_[l.Index()]++;</div>
|
|
<div class="line"><a name="l01303"></a><span class="lineno"> 1303</span>  literal_to_clauses_[l.Index()].<a class="code" href="classabsl_1_1_strong_vector.html#a9263000d449fdccb6cb70b303063e60b">push_back</a>(<a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>);</div>
|
|
<div class="line"><a name="l01304"></a><span class="lineno"> 1304</span>  <span class="keywordflow">if</span> (!in_need_to_be_updated_[l.Variable()]) {</div>
|
|
<div class="line"><a name="l01305"></a><span class="lineno"> 1305</span>  in_need_to_be_updated_[l.Variable()] = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01306"></a><span class="lineno"> 1306</span>  need_to_be_updated_.push_back(l.Variable());</div>
|
|
<div class="line"><a name="l01307"></a><span class="lineno"> 1307</span>  }</div>
|
|
<div class="line"><a name="l01308"></a><span class="lineno"> 1308</span>  }</div>
|
|
<div class="line"><a name="l01309"></a><span class="lineno"> 1309</span> }</div>
|
|
<div class="line"><a name="l01310"></a><span class="lineno"> 1310</span>  </div>
|
|
<div class="line"><a name="l01311"></a><span class="lineno"> 1311</span> <span class="keyword">template</span> <<span class="keywordtype">bool</span> score_only, <span class="keywordtype">bool</span> with_binary_only></div>
|
|
<div class="line"><a name="l01312"></a><span class="lineno"> 1312</span> <span class="keywordtype">bool</span> BoundedVariableElimination::ResolveAllClauseContaining(Literal lit) {</div>
|
|
<div class="line"><a name="l01313"></a><span class="lineno"> 1313</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> clause_weight = parameters_.presolve_bve_clause_weight();</div>
|
|
<div class="line"><a name="l01314"></a><span class="lineno"> 1314</span>  </div>
|
|
<div class="line"><a name="l01315"></a><span class="lineno"> 1315</span>  <span class="keyword">const</span> std::vector<Literal>& implications =</div>
|
|
<div class="line"><a name="l01316"></a><span class="lineno"> 1316</span>  implication_graph_-><a class="code" href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#a7eb6126b57ff4ab8246fe54f4e5550f4">DirectImplications</a>(lit);</div>
|
|
<div class="line"><a name="l01317"></a><span class="lineno"> 1317</span>  <span class="keyword">auto</span>& clause_containing_lit = literal_to_clauses_[lit.Index()];</div>
|
|
<div class="line"><a name="l01318"></a><span class="lineno"> 1318</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < clause_containing_lit.size(); ++i) {</div>
|
|
<div class="line"><a name="l01319"></a><span class="lineno"> 1319</span>  <span class="keyword">const</span> ClauseIndex clause_index = clause_containing_lit[i];</div>
|
|
<div class="line"><a name="l01320"></a><span class="lineno"> 1320</span>  <span class="keyword">const</span> <span class="keyword">auto</span> clause = clauses_[clause_index]->AsSpan();</div>
|
|
<div class="line"><a name="l01321"></a><span class="lineno"> 1321</span>  <span class="keywordflow">if</span> (clause.empty()) <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l01322"></a><span class="lineno"> 1322</span>  </div>
|
|
<div class="line"><a name="l01323"></a><span class="lineno"> 1323</span>  <span class="keywordflow">if</span> (!score_only) resolvant_.clear();</div>
|
|
<div class="line"><a name="l01324"></a><span class="lineno"> 1324</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> Literal l : clause) {</div>
|
|
<div class="line"><a name="l01325"></a><span class="lineno"> 1325</span>  <span class="keywordflow">if</span> (!score_only && l != lit) resolvant_.push_back(l);</div>
|
|
<div class="line"><a name="l01326"></a><span class="lineno"> 1326</span>  marked_[l.Index()] = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01327"></a><span class="lineno"> 1327</span>  }</div>
|
|
<div class="line"><a name="l01328"></a><span class="lineno"> 1328</span>  num_inspected_literals_ += clause.size() + implications.size();</div>
|
|
<div class="line"><a name="l01329"></a><span class="lineno"> 1329</span>  </div>
|
|
<div class="line"><a name="l01330"></a><span class="lineno"> 1330</span>  <span class="comment">// If this is true, then "clause" is subsumed by one of its resolvant and we</span></div>
|
|
<div class="line"><a name="l01331"></a><span class="lineno"> 1331</span>  <span class="comment">// can just remove lit from it. Then it doesn't need to be acounted at all.</span></div>
|
|
<div class="line"><a name="l01332"></a><span class="lineno"> 1332</span>  <span class="keywordtype">bool</span> clause_can_be_simplified = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l01333"></a><span class="lineno"> 1333</span>  <span class="keyword">const</span> <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> saved_score = new_score_;</div>
|
|
<div class="line"><a name="l01334"></a><span class="lineno"> 1334</span>  </div>
|
|
<div class="line"><a name="l01335"></a><span class="lineno"> 1335</span>  <span class="comment">// Resolution with binary clauses.</span></div>
|
|
<div class="line"><a name="l01336"></a><span class="lineno"> 1336</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> Literal l : implications) {</div>
|
|
<div class="line"><a name="l01337"></a><span class="lineno"> 1337</span>  <a class="code" href="base_2logging_8h.html#ab25e01a2942b821d66371fc68d53f2eb">CHECK_NE</a>(l, lit);</div>
|
|
<div class="line"><a name="l01338"></a><span class="lineno"> 1338</span>  <span class="keywordflow">if</span> (marked_[l.NegatedIndex()]) <span class="keywordflow">continue</span>; <span class="comment">// trivial.</span></div>
|
|
<div class="line"><a name="l01339"></a><span class="lineno"> 1339</span>  <span class="keywordflow">if</span> (marked_[l.Index()]) {</div>
|
|
<div class="line"><a name="l01340"></a><span class="lineno"> 1340</span>  clause_can_be_simplified = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01341"></a><span class="lineno"> 1341</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l01342"></a><span class="lineno"> 1342</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l01343"></a><span class="lineno"> 1343</span>  <span class="keywordflow">if</span> (score_only) {</div>
|
|
<div class="line"><a name="l01344"></a><span class="lineno"> 1344</span>  new_score_ += clause_weight + clause.size();</div>
|
|
<div class="line"><a name="l01345"></a><span class="lineno"> 1345</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l01346"></a><span class="lineno"> 1346</span>  resolvant_.push_back(l);</div>
|
|
<div class="line"><a name="l01347"></a><span class="lineno"> 1347</span>  AddClause(resolvant_);</div>
|
|
<div class="line"><a name="l01348"></a><span class="lineno"> 1348</span>  resolvant_.pop_back();</div>
|
|
<div class="line"><a name="l01349"></a><span class="lineno"> 1349</span>  }</div>
|
|
<div class="line"><a name="l01350"></a><span class="lineno"> 1350</span>  }</div>
|
|
<div class="line"><a name="l01351"></a><span class="lineno"> 1351</span>  }</div>
|
|
<div class="line"><a name="l01352"></a><span class="lineno"> 1352</span>  </div>
|
|
<div class="line"><a name="l01353"></a><span class="lineno"> 1353</span>  <span class="comment">// Resolution with non-binary clauses.</span></div>
|
|
<div class="line"><a name="l01354"></a><span class="lineno"> 1354</span>  <span class="keywordflow">if</span> (!with_binary_only && !clause_can_be_simplified) {</div>
|
|
<div class="line"><a name="l01355"></a><span class="lineno"> 1355</span>  <span class="keyword">auto</span>& clause_containing_not_lit = literal_to_clauses_[lit.NegatedIndex()];</div>
|
|
<div class="line"><a name="l01356"></a><span class="lineno"> 1356</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> j = 0; j < clause_containing_not_lit.size(); ++j) {</div>
|
|
<div class="line"><a name="l01357"></a><span class="lineno"> 1357</span>  <span class="keywordflow">if</span> (score_only && new_score_ > score_threshold_) <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l01358"></a><span class="lineno"> 1358</span>  <span class="keyword">const</span> ClauseIndex other_index = clause_containing_not_lit[j];</div>
|
|
<div class="line"><a name="l01359"></a><span class="lineno"> 1359</span>  <span class="keyword">const</span> <span class="keyword">auto</span> other = clauses_[other_index]->AsSpan();</div>
|
|
<div class="line"><a name="l01360"></a><span class="lineno"> 1360</span>  <span class="keywordflow">if</span> (other.empty()) <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l01361"></a><span class="lineno"> 1361</span>  <span class="keywordtype">bool</span> trivial = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l01362"></a><span class="lineno"> 1362</span>  <span class="keywordtype">int</span> extra_size = 0;</div>
|
|
<div class="line"><a name="l01363"></a><span class="lineno"> 1363</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> Literal l : other) {</div>
|
|
<div class="line"><a name="l01364"></a><span class="lineno"> 1364</span>  <span class="comment">// TODO(user): we can optimize this by updating it outside the loop.</span></div>
|
|
<div class="line"><a name="l01365"></a><span class="lineno"> 1365</span>  ++num_inspected_literals_;</div>
|
|
<div class="line"><a name="l01366"></a><span class="lineno"> 1366</span>  <span class="keywordflow">if</span> (l == lit.Negated()) <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l01367"></a><span class="lineno"> 1367</span>  <span class="keywordflow">if</span> (marked_[l.NegatedIndex()]) {</div>
|
|
<div class="line"><a name="l01368"></a><span class="lineno"> 1368</span>  trivial = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01369"></a><span class="lineno"> 1369</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l01370"></a><span class="lineno"> 1370</span>  }</div>
|
|
<div class="line"><a name="l01371"></a><span class="lineno"> 1371</span>  <span class="keywordflow">if</span> (!marked_[l.Index()]) {</div>
|
|
<div class="line"><a name="l01372"></a><span class="lineno"> 1372</span>  ++extra_size;</div>
|
|
<div class="line"><a name="l01373"></a><span class="lineno"> 1373</span>  <span class="keywordflow">if</span> (!score_only) resolvant_.push_back(l);</div>
|
|
<div class="line"><a name="l01374"></a><span class="lineno"> 1374</span>  }</div>
|
|
<div class="line"><a name="l01375"></a><span class="lineno"> 1375</span>  }</div>
|
|
<div class="line"><a name="l01376"></a><span class="lineno"> 1376</span>  <span class="keywordflow">if</span> (trivial) {</div>
|
|
<div class="line"><a name="l01377"></a><span class="lineno"> 1377</span>  <span class="keywordflow">if</span> (!score_only) resolvant_.resize(resolvant_.size() - extra_size);</div>
|
|
<div class="line"><a name="l01378"></a><span class="lineno"> 1378</span>  <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l01379"></a><span class="lineno"> 1379</span>  }</div>
|
|
<div class="line"><a name="l01380"></a><span class="lineno"> 1380</span>  </div>
|
|
<div class="line"><a name="l01381"></a><span class="lineno"> 1381</span>  <span class="comment">// If this is the case, the other clause is subsumed by the resolvant.</span></div>
|
|
<div class="line"><a name="l01382"></a><span class="lineno"> 1382</span>  <span class="comment">// We can just remove not_lit from it and ignore it.</span></div>
|
|
<div class="line"><a name="l01383"></a><span class="lineno"> 1383</span>  <span class="keywordflow">if</span> (score_only && clause.size() + extra_size <= other.size()) {</div>
|
|
<div class="line"><a name="l01384"></a><span class="lineno"> 1384</span>  <a class="code" href="base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b">CHECK_EQ</a>(clause.size() + extra_size, other.size());</div>
|
|
<div class="line"><a name="l01385"></a><span class="lineno"> 1385</span>  ++num_simplifications_;</div>
|
|
<div class="line"><a name="l01386"></a><span class="lineno"> 1386</span>  </div>
|
|
<div class="line"><a name="l01387"></a><span class="lineno"> 1387</span>  <span class="comment">// Note that we update the threshold since this clause was counted in</span></div>
|
|
<div class="line"><a name="l01388"></a><span class="lineno"> 1388</span>  <span class="comment">// it.</span></div>
|
|
<div class="line"><a name="l01389"></a><span class="lineno"> 1389</span>  score_threshold_ -= clause_weight + other.size();</div>
|
|
<div class="line"><a name="l01390"></a><span class="lineno"> 1390</span>  </div>
|
|
<div class="line"><a name="l01391"></a><span class="lineno"> 1391</span>  <span class="keywordflow">if</span> (extra_size == 0) {</div>
|
|
<div class="line"><a name="l01392"></a><span class="lineno"> 1392</span>  <span class="comment">// We have a double self-subsumption. We can just remove this</span></div>
|
|
<div class="line"><a name="l01393"></a><span class="lineno"> 1393</span>  <span class="comment">// clause since it will be subsumed by the clause created in the</span></div>
|
|
<div class="line"><a name="l01394"></a><span class="lineno"> 1394</span>  <span class="comment">// "clause_can_be_simplified" case below.</span></div>
|
|
<div class="line"><a name="l01395"></a><span class="lineno"> 1395</span>  DeleteClause(clauses_[other_index]);</div>
|
|
<div class="line"><a name="l01396"></a><span class="lineno"> 1396</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l01397"></a><span class="lineno"> 1397</span>  <span class="keywordflow">if</span> (!RemoveLiteralFromClause(lit.Negated(),</div>
|
|
<div class="line"><a name="l01398"></a><span class="lineno"> 1398</span>  clauses_[other_index])) {</div>
|
|
<div class="line"><a name="l01399"></a><span class="lineno"> 1399</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l01400"></a><span class="lineno"> 1400</span>  }</div>
|
|
<div class="line"><a name="l01401"></a><span class="lineno"> 1401</span>  std::swap(clause_containing_not_lit[j],</div>
|
|
<div class="line"><a name="l01402"></a><span class="lineno"> 1402</span>  clause_containing_not_lit.back());</div>
|
|
<div class="line"><a name="l01403"></a><span class="lineno"> 1403</span>  clause_containing_not_lit.pop_back();</div>
|
|
<div class="line"><a name="l01404"></a><span class="lineno"> 1404</span>  --j; <span class="comment">// Reprocess the new position.</span></div>
|
|
<div class="line"><a name="l01405"></a><span class="lineno"> 1405</span>  <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l01406"></a><span class="lineno"> 1406</span>  }</div>
|
|
<div class="line"><a name="l01407"></a><span class="lineno"> 1407</span>  }</div>
|
|
<div class="line"><a name="l01408"></a><span class="lineno"> 1408</span>  </div>
|
|
<div class="line"><a name="l01409"></a><span class="lineno"> 1409</span>  <span class="keywordflow">if</span> (extra_size == 0) {</div>
|
|
<div class="line"><a name="l01410"></a><span class="lineno"> 1410</span>  clause_can_be_simplified = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01411"></a><span class="lineno"> 1411</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l01412"></a><span class="lineno"> 1412</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l01413"></a><span class="lineno"> 1413</span>  <span class="keywordflow">if</span> (score_only) {</div>
|
|
<div class="line"><a name="l01414"></a><span class="lineno"> 1414</span>  <span class="comment">// Hack. We do not want to create long clauses during BVE.</span></div>
|
|
<div class="line"><a name="l01415"></a><span class="lineno"> 1415</span>  <span class="keywordflow">if</span> (clause.size() - 1 + extra_size > 100) {</div>
|
|
<div class="line"><a name="l01416"></a><span class="lineno"> 1416</span>  new_score_ = score_threshold_ + 1;</div>
|
|
<div class="line"><a name="l01417"></a><span class="lineno"> 1417</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l01418"></a><span class="lineno"> 1418</span>  }</div>
|
|
<div class="line"><a name="l01419"></a><span class="lineno"> 1419</span>  </div>
|
|
<div class="line"><a name="l01420"></a><span class="lineno"> 1420</span>  new_score_ += clause_weight + clause.size() - 1 + extra_size;</div>
|
|
<div class="line"><a name="l01421"></a><span class="lineno"> 1421</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l01422"></a><span class="lineno"> 1422</span>  AddClause(resolvant_);</div>
|
|
<div class="line"><a name="l01423"></a><span class="lineno"> 1423</span>  resolvant_.resize(resolvant_.size() - extra_size);</div>
|
|
<div class="line"><a name="l01424"></a><span class="lineno"> 1424</span>  }</div>
|
|
<div class="line"><a name="l01425"></a><span class="lineno"> 1425</span>  }</div>
|
|
<div class="line"><a name="l01426"></a><span class="lineno"> 1426</span>  }</div>
|
|
<div class="line"><a name="l01427"></a><span class="lineno"> 1427</span>  }</div>
|
|
<div class="line"><a name="l01428"></a><span class="lineno"> 1428</span>  </div>
|
|
<div class="line"><a name="l01429"></a><span class="lineno"> 1429</span>  <span class="comment">// Note that we need to clear marked before aborting.</span></div>
|
|
<div class="line"><a name="l01430"></a><span class="lineno"> 1430</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> Literal l : clause) marked_[l.Index()] = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l01431"></a><span class="lineno"> 1431</span>  </div>
|
|
<div class="line"><a name="l01432"></a><span class="lineno"> 1432</span>  <span class="comment">// In this case, we simplify and remove the clause from here.</span></div>
|
|
<div class="line"><a name="l01433"></a><span class="lineno"> 1433</span>  <span class="keywordflow">if</span> (clause_can_be_simplified) {</div>
|
|
<div class="line"><a name="l01434"></a><span class="lineno"> 1434</span>  ++num_simplifications_;</div>
|
|
<div class="line"><a name="l01435"></a><span class="lineno"> 1435</span>  </div>
|
|
<div class="line"><a name="l01436"></a><span class="lineno"> 1436</span>  <span class="comment">// Note that we update the threshold as if this was simplified before.</span></div>
|
|
<div class="line"><a name="l01437"></a><span class="lineno"> 1437</span>  new_score_ = saved_score;</div>
|
|
<div class="line"><a name="l01438"></a><span class="lineno"> 1438</span>  score_threshold_ -= clause_weight + clause.size();</div>
|
|
<div class="line"><a name="l01439"></a><span class="lineno"> 1439</span>  </div>
|
|
<div class="line"><a name="l01440"></a><span class="lineno"> 1440</span>  <span class="keywordflow">if</span> (!RemoveLiteralFromClause(lit, clauses_[clause_index])) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l01441"></a><span class="lineno"> 1441</span>  std::swap(clause_containing_lit[i], clause_containing_lit.back());</div>
|
|
<div class="line"><a name="l01442"></a><span class="lineno"> 1442</span>  clause_containing_lit.pop_back();</div>
|
|
<div class="line"><a name="l01443"></a><span class="lineno"> 1443</span>  --i; <span class="comment">// Reprocess the new position.</span></div>
|
|
<div class="line"><a name="l01444"></a><span class="lineno"> 1444</span>  }</div>
|
|
<div class="line"><a name="l01445"></a><span class="lineno"> 1445</span>  </div>
|
|
<div class="line"><a name="l01446"></a><span class="lineno"> 1446</span>  <span class="keywordflow">if</span> (score_only && new_score_ > score_threshold_) <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01447"></a><span class="lineno"> 1447</span>  </div>
|
|
<div class="line"><a name="l01448"></a><span class="lineno"> 1448</span>  <span class="comment">// When this happen, then the clause is blocked (i.e. all its resolvant are</span></div>
|
|
<div class="line"><a name="l01449"></a><span class="lineno"> 1449</span>  <span class="comment">// trivial). So even if we do not actually perform the variable elimination,</span></div>
|
|
<div class="line"><a name="l01450"></a><span class="lineno"> 1450</span>  <span class="comment">// we can still remove this clause. Note that we treat the score as if the</span></div>
|
|
<div class="line"><a name="l01451"></a><span class="lineno"> 1451</span>  <span class="comment">// clause was removed before.</span></div>
|
|
<div class="line"><a name="l01452"></a><span class="lineno"> 1452</span>  <span class="comment">//</span></div>
|
|
<div class="line"><a name="l01453"></a><span class="lineno"> 1453</span>  <span class="comment">// Tricky: The detection only work if we didn't abort the computation above,</span></div>
|
|
<div class="line"><a name="l01454"></a><span class="lineno"> 1454</span>  <span class="comment">// so we do that after the score_threshold_ check.</span></div>
|
|
<div class="line"><a name="l01455"></a><span class="lineno"> 1455</span>  <span class="comment">//</span></div>
|
|
<div class="line"><a name="l01456"></a><span class="lineno"> 1456</span>  <span class="comment">// TODO(user): Also detect blocked clause for not(lit)? It is not as cheap</span></div>
|
|
<div class="line"><a name="l01457"></a><span class="lineno"> 1457</span>  <span class="comment">// though and require more code.</span></div>
|
|
<div class="line"><a name="l01458"></a><span class="lineno"> 1458</span>  <span class="keywordflow">if</span> (score_only && !with_binary_only && !clause_can_be_simplified &&</div>
|
|
<div class="line"><a name="l01459"></a><span class="lineno"> 1459</span>  new_score_ == saved_score) {</div>
|
|
<div class="line"><a name="l01460"></a><span class="lineno"> 1460</span>  ++num_blocked_clauses_;</div>
|
|
<div class="line"><a name="l01461"></a><span class="lineno"> 1461</span>  score_threshold_ -= clause_weight + clause.size();</div>
|
|
<div class="line"><a name="l01462"></a><span class="lineno"> 1462</span>  postsolve_-><a class="code" href="structoperations__research_1_1sat_1_1_postsolve_clauses.html#ae70f41a3895b08dd35056d97eec1800e">AddClauseWithSpecialLiteral</a>(lit, clause);</div>
|
|
<div class="line"><a name="l01463"></a><span class="lineno"> 1463</span>  DeleteClause(clauses_[clause_index]);</div>
|
|
<div class="line"><a name="l01464"></a><span class="lineno"> 1464</span>  }</div>
|
|
<div class="line"><a name="l01465"></a><span class="lineno"> 1465</span>  }</div>
|
|
<div class="line"><a name="l01466"></a><span class="lineno"> 1466</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01467"></a><span class="lineno"> 1467</span> }</div>
|
|
<div class="line"><a name="l01468"></a><span class="lineno"> 1468</span>  </div>
|
|
<div class="line"><a name="l01469"></a><span class="lineno"> 1469</span> <span class="keywordtype">bool</span> BoundedVariableElimination::CrossProduct(BooleanVariable <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>) {</div>
|
|
<div class="line"><a name="l01470"></a><span class="lineno"> 1470</span>  <span class="keywordflow">if</span> (assignment_.<a class="code" href="classoperations__research_1_1sat_1_1_variables_assignment.html#a49e751eb6f0e9babd957889bb8e7472d">VariableIsAssigned</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>)) <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01471"></a><span class="lineno"> 1471</span>  </div>
|
|
<div class="line"><a name="l01472"></a><span class="lineno"> 1472</span>  <span class="keyword">const</span> Literal lit(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, <span class="keyword">true</span>);</div>
|
|
<div class="line"><a name="l01473"></a><span class="lineno"> 1473</span>  <span class="keyword">const</span> Literal not_lit(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, <span class="keyword">false</span>);</div>
|
|
<div class="line"><a name="l01474"></a><span class="lineno"> 1474</span>  {</div>
|
|
<div class="line"><a name="l01475"></a><span class="lineno"> 1475</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> s1 = NumClausesContaining(lit);</div>
|
|
<div class="line"><a name="l01476"></a><span class="lineno"> 1476</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> s2 = NumClausesContaining(not_lit);</div>
|
|
<div class="line"><a name="l01477"></a><span class="lineno"> 1477</span>  <span class="keywordflow">if</span> (s1 == 0 && s2 == 0) <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01478"></a><span class="lineno"> 1478</span>  <span class="keywordflow">if</span> (s1 > 0 && s2 == 0) {</div>
|
|
<div class="line"><a name="l01479"></a><span class="lineno"> 1479</span>  num_eliminated_variables_++;</div>
|
|
<div class="line"><a name="l01480"></a><span class="lineno"> 1480</span>  <span class="keywordflow">if</span> (!clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#a0ddf4dc22639ee58f75985d875d1fd2d">InprocessingFixLiteral</a>(lit)) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l01481"></a><span class="lineno"> 1481</span>  DeleteAllClausesContaining(lit);</div>
|
|
<div class="line"><a name="l01482"></a><span class="lineno"> 1482</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01483"></a><span class="lineno"> 1483</span>  }</div>
|
|
<div class="line"><a name="l01484"></a><span class="lineno"> 1484</span>  <span class="keywordflow">if</span> (s1 == 0 && s2 > 0) {</div>
|
|
<div class="line"><a name="l01485"></a><span class="lineno"> 1485</span>  num_eliminated_variables_++;</div>
|
|
<div class="line"><a name="l01486"></a><span class="lineno"> 1486</span>  <span class="keywordflow">if</span> (!clause_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_literal_watchers.html#a0ddf4dc22639ee58f75985d875d1fd2d">InprocessingFixLiteral</a>(not_lit)) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l01487"></a><span class="lineno"> 1487</span>  DeleteAllClausesContaining(not_lit);</div>
|
|
<div class="line"><a name="l01488"></a><span class="lineno"> 1488</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01489"></a><span class="lineno"> 1489</span>  }</div>
|
|
<div class="line"><a name="l01490"></a><span class="lineno"> 1490</span>  <span class="keywordflow">if</span> (implication_graph_-><a class="code" href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#a92844929b07caef45924b8c5e3a5a05c">IsRedundant</a>(lit)) {</div>
|
|
<div class="line"><a name="l01491"></a><span class="lineno"> 1491</span>  <span class="comment">// TODO(user): do that elsewhere?</span></div>
|
|
<div class="line"><a name="l01492"></a><span class="lineno"> 1492</span>  <a class="code" href="base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b">CHECK_EQ</a>(s1, 1);</div>
|
|
<div class="line"><a name="l01493"></a><span class="lineno"> 1493</span>  <a class="code" href="base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b">CHECK_EQ</a>(s2, 1);</div>
|
|
<div class="line"><a name="l01494"></a><span class="lineno"> 1494</span>  <a class="code" href="base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b">CHECK_EQ</a>(implication_graph_-><a class="code" href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#addf8503ac6335c8001276ed7760d7508">NumImplicationOnVariableRemoval</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>), 0);</div>
|
|
<div class="line"><a name="l01495"></a><span class="lineno"> 1495</span>  num_eliminated_variables_++;</div>
|
|
<div class="line"><a name="l01496"></a><span class="lineno"> 1496</span>  implication_graph_-><a class="code" href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#ab95a602604a2056d11cba9119e490236">RemoveBooleanVariable</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, &postsolve_-><a class="code" href="structoperations__research_1_1sat_1_1_postsolve_clauses.html#a8cc6d9f1059f26a873442045a72e651e">clauses</a>);</div>
|
|
<div class="line"><a name="l01497"></a><span class="lineno"> 1497</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01498"></a><span class="lineno"> 1498</span>  }</div>
|
|
<div class="line"><a name="l01499"></a><span class="lineno"> 1499</span>  </div>
|
|
<div class="line"><a name="l01500"></a><span class="lineno"> 1500</span>  <span class="comment">// Heuristic. Abort if the work required to decide if var should be removed</span></div>
|
|
<div class="line"><a name="l01501"></a><span class="lineno"> 1501</span>  <span class="comment">// seems to big.</span></div>
|
|
<div class="line"><a name="l01502"></a><span class="lineno"> 1502</span>  <span class="keywordflow">if</span> (s1 > 1 && s2 > 1 && s1 * s2 > parameters_.presolve_bve_threshold()) {</div>
|
|
<div class="line"><a name="l01503"></a><span class="lineno"> 1503</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01504"></a><span class="lineno"> 1504</span>  }</div>
|
|
<div class="line"><a name="l01505"></a><span class="lineno"> 1505</span>  }</div>
|
|
<div class="line"><a name="l01506"></a><span class="lineno"> 1506</span>  </div>
|
|
<div class="line"><a name="l01507"></a><span class="lineno"> 1507</span>  <span class="comment">// TODO(user): swap lit and not_lit for speed? it is unclear if we prefer</span></div>
|
|
<div class="line"><a name="l01508"></a><span class="lineno"> 1508</span>  <span class="comment">// to minimize the number of clause containing lit or not_lit though. Also,</span></div>
|
|
<div class="line"><a name="l01509"></a><span class="lineno"> 1509</span>  <span class="comment">// we might want to alternate since we also detect blocked clause containing</span></div>
|
|
<div class="line"><a name="l01510"></a><span class="lineno"> 1510</span>  <span class="comment">// lit, but don't do it for not_lit.</span></div>
|
|
<div class="line"><a name="l01511"></a><span class="lineno"> 1511</span>  </div>
|
|
<div class="line"><a name="l01512"></a><span class="lineno"> 1512</span>  <span class="comment">// Compute the current score.</span></div>
|
|
<div class="line"><a name="l01513"></a><span class="lineno"> 1513</span>  <span class="comment">// TODO(user): cleanup the list lazily at the same time?</span></div>
|
|
<div class="line"><a name="l01514"></a><span class="lineno"> 1514</span>  <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> score = 0;</div>
|
|
<div class="line"><a name="l01515"></a><span class="lineno"> 1515</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> clause_weight = parameters_.presolve_bve_clause_weight();</div>
|
|
<div class="line"><a name="l01516"></a><span class="lineno"> 1516</span>  score +=</div>
|
|
<div class="line"><a name="l01517"></a><span class="lineno"> 1517</span>  implication_graph_-><a class="code" href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#a7eb6126b57ff4ab8246fe54f4e5550f4">DirectImplications</a>(lit).size() * (clause_weight + 2);</div>
|
|
<div class="line"><a name="l01518"></a><span class="lineno"> 1518</span>  score += implication_graph_-><a class="code" href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#a7eb6126b57ff4ab8246fe54f4e5550f4">DirectImplications</a>(not_lit).size() *</div>
|
|
<div class="line"><a name="l01519"></a><span class="lineno"> 1519</span>  (clause_weight + 2);</div>
|
|
<div class="line"><a name="l01520"></a><span class="lineno"> 1520</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> ClauseIndex i : literal_to_clauses_[lit.Index()]) {</div>
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|
<div class="line"><a name="l01521"></a><span class="lineno"> 1521</span>  <span class="keyword">const</span> <span class="keyword">auto</span> c = clauses_[i]->AsSpan();</div>
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|
<div class="line"><a name="l01522"></a><span class="lineno"> 1522</span>  <span class="keywordflow">if</span> (!c.empty()) score += clause_weight + c.size();</div>
|
|
<div class="line"><a name="l01523"></a><span class="lineno"> 1523</span>  }</div>
|
|
<div class="line"><a name="l01524"></a><span class="lineno"> 1524</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> ClauseIndex i : literal_to_clauses_[not_lit.Index()]) {</div>
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|
<div class="line"><a name="l01525"></a><span class="lineno"> 1525</span>  <span class="keyword">const</span> <span class="keyword">auto</span> c = clauses_[i]->AsSpan();</div>
|
|
<div class="line"><a name="l01526"></a><span class="lineno"> 1526</span>  <span class="keywordflow">if</span> (!c.empty()) score += clause_weight + c.size();</div>
|
|
<div class="line"><a name="l01527"></a><span class="lineno"> 1527</span>  }</div>
|
|
<div class="line"><a name="l01528"></a><span class="lineno"> 1528</span>  </div>
|
|
<div class="line"><a name="l01529"></a><span class="lineno"> 1529</span>  <span class="comment">// Compute the new score after BVE.</span></div>
|
|
<div class="line"><a name="l01530"></a><span class="lineno"> 1530</span>  <span class="comment">// Abort as soon as it crosses the threshold.</span></div>
|
|
<div class="line"><a name="l01531"></a><span class="lineno"> 1531</span>  <span class="comment">//</span></div>
|
|
<div class="line"><a name="l01532"></a><span class="lineno"> 1532</span>  <span class="comment">// TODO(user): Experiment with leaving the implications graph as is. This will</span></div>
|
|
<div class="line"><a name="l01533"></a><span class="lineno"> 1533</span>  <span class="comment">// not remove the variable completely, but it seems interesting since after</span></div>
|
|
<div class="line"><a name="l01534"></a><span class="lineno"> 1534</span>  <span class="comment">// equivalent variable removal and failed literal probing, the cross product</span></div>
|
|
<div class="line"><a name="l01535"></a><span class="lineno"> 1535</span>  <span class="comment">// of the implication always add a quadratic number of implication, except if</span></div>
|
|
<div class="line"><a name="l01536"></a><span class="lineno"> 1536</span>  <span class="comment">// the in (or out) degree is zero or one.</span></div>
|
|
<div class="line"><a name="l01537"></a><span class="lineno"> 1537</span>  score_threshold_ = score;</div>
|
|
<div class="line"><a name="l01538"></a><span class="lineno"> 1538</span>  new_score_ = implication_graph_-><a class="code" href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#addf8503ac6335c8001276ed7760d7508">NumImplicationOnVariableRemoval</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>) *</div>
|
|
<div class="line"><a name="l01539"></a><span class="lineno"> 1539</span>  (clause_weight + 2);</div>
|
|
<div class="line"><a name="l01540"></a><span class="lineno"> 1540</span>  <span class="keywordflow">if</span> (new_score_ > score_threshold_) <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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|
<div class="line"><a name="l01541"></a><span class="lineno"> 1541</span>  <span class="keywordflow">if</span> (!ResolveAllClauseContaining<<span class="comment">/*score_only=*/</span><span class="keyword">true</span>,</div>
|
|
<div class="line"><a name="l01542"></a><span class="lineno"> 1542</span>  <span class="comment">/*with_binary_only=*/</span><span class="keyword">true</span>>(not_lit)) {</div>
|
|
<div class="line"><a name="l01543"></a><span class="lineno"> 1543</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l01544"></a><span class="lineno"> 1544</span>  }</div>
|
|
<div class="line"><a name="l01545"></a><span class="lineno"> 1545</span>  <span class="keywordflow">if</span> (new_score_ > score_threshold_) <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01546"></a><span class="lineno"> 1546</span>  <span class="keywordflow">if</span> (!ResolveAllClauseContaining<<span class="comment">/*score_only=*/</span><span class="keyword">true</span>,</div>
|
|
<div class="line"><a name="l01547"></a><span class="lineno"> 1547</span>  <span class="comment">/*with_binary_only=*/</span><span class="keyword">false</span>>(lit)) {</div>
|
|
<div class="line"><a name="l01548"></a><span class="lineno"> 1548</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l01549"></a><span class="lineno"> 1549</span>  }</div>
|
|
<div class="line"><a name="l01550"></a><span class="lineno"> 1550</span>  <span class="keywordflow">if</span> (new_score_ > score_threshold_) <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01551"></a><span class="lineno"> 1551</span>  </div>
|
|
<div class="line"><a name="l01552"></a><span class="lineno"> 1552</span>  <span class="comment">// Perform BVE.</span></div>
|
|
<div class="line"><a name="l01553"></a><span class="lineno"> 1553</span>  <span class="keywordflow">if</span> (new_score_ > 0) {</div>
|
|
<div class="line"><a name="l01554"></a><span class="lineno"> 1554</span>  <span class="keywordflow">if</span> (!ResolveAllClauseContaining<<span class="comment">/*score_only=*/</span><span class="keyword">false</span>,</div>
|
|
<div class="line"><a name="l01555"></a><span class="lineno"> 1555</span>  <span class="comment">/*with_binary_only=*/</span><span class="keyword">false</span>>(lit)) {</div>
|
|
<div class="line"><a name="l01556"></a><span class="lineno"> 1556</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l01557"></a><span class="lineno"> 1557</span>  }</div>
|
|
<div class="line"><a name="l01558"></a><span class="lineno"> 1558</span>  <span class="keywordflow">if</span> (!ResolveAllClauseContaining<<span class="comment">/*score_only=*/</span><span class="keyword">false</span>,</div>
|
|
<div class="line"><a name="l01559"></a><span class="lineno"> 1559</span>  <span class="comment">/*with_binary_only=*/</span><span class="keyword">true</span>>(not_lit)) {</div>
|
|
<div class="line"><a name="l01560"></a><span class="lineno"> 1560</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l01561"></a><span class="lineno"> 1561</span>  }</div>
|
|
<div class="line"><a name="l01562"></a><span class="lineno"> 1562</span>  }</div>
|
|
<div class="line"><a name="l01563"></a><span class="lineno"> 1563</span>  </div>
|
|
<div class="line"><a name="l01564"></a><span class="lineno"> 1564</span>  ++num_eliminated_variables_;</div>
|
|
<div class="line"><a name="l01565"></a><span class="lineno"> 1565</span>  implication_graph_-><a class="code" href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#ab95a602604a2056d11cba9119e490236">RemoveBooleanVariable</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, &postsolve_-><a class="code" href="structoperations__research_1_1sat_1_1_postsolve_clauses.html#a8cc6d9f1059f26a873442045a72e651e">clauses</a>);</div>
|
|
<div class="line"><a name="l01566"></a><span class="lineno"> 1566</span>  DeleteAllClausesContaining(lit);</div>
|
|
<div class="line"><a name="l01567"></a><span class="lineno"> 1567</span>  DeleteAllClausesContaining(not_lit);</div>
|
|
<div class="line"><a name="l01568"></a><span class="lineno"> 1568</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l01569"></a><span class="lineno"> 1569</span> }</div>
|
|
<div class="line"><a name="l01570"></a><span class="lineno"> 1570</span>  </div>
|
|
<div class="line"><a name="l01571"></a><span class="lineno"> 1571</span> } <span class="comment">// namespace sat</span></div>
|
|
<div class="line"><a name="l01572"></a><span class="lineno"> 1572</span> } <span class="comment">// namespace operations_research</span></div>
|
|
<div class="ttc" id="abase_2logging_8h_html_a09f7d88282cf92c9f231270ac113e5c6"><div class="ttname"><a href="base_2logging_8h.html#a09f7d88282cf92c9f231270ac113e5c6">LOG_IF</a></div><div class="ttdeci">#define LOG_IF(severity, condition)</div><div class="ttdef"><b>Definition:</b> <a href="base_2logging_8h_source.html#l00479">base/logging.h:479</a></div></div>
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<div class="ttc" id="abase_2logging_8h_html_a3e1cfef60e774a81f30eaddf26a3a274"><div class="ttname"><a href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a></div><div class="ttdeci">#define CHECK(condition)</div><div class="ttdef"><b>Definition:</b> <a href="base_2logging_8h_source.html#l00495">base/logging.h:495</a></div></div>
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<div class="ttc" id="abase_2logging_8h_html_a46e69120fbd3b36e6960e096d23b66f0"><div class="ttname"><a href="base_2logging_8h.html#a46e69120fbd3b36e6960e096d23b66f0">DCHECK_NE</a></div><div class="ttdeci">#define DCHECK_NE(val1, val2)</div><div class="ttdef"><b>Definition:</b> <a href="base_2logging_8h_source.html#l00886">base/logging.h:886</a></div></div>
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<div class="ttc" id="abase_2logging_8h_html_a7c0ce053b28d53aa4eaf3eb7fb71663b"><div class="ttname"><a href="base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b">CHECK_EQ</a></div><div class="ttdeci">#define CHECK_EQ(val1, val2)</div><div class="ttdef"><b>Definition:</b> <a href="base_2logging_8h_source.html#l00697">base/logging.h:697</a></div></div>
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<div class="ttc" id="abase_2logging_8h_html_ab25e01a2942b821d66371fc68d53f2eb"><div class="ttname"><a href="base_2logging_8h.html#ab25e01a2942b821d66371fc68d53f2eb">CHECK_NE</a></div><div class="ttdeci">#define CHECK_NE(val1, val2)</div><div class="ttdef"><b>Definition:</b> <a href="base_2logging_8h_source.html#l00698">base/logging.h:698</a></div></div>
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<div class="ttc" id="abase_2logging_8h_html_ae17f8119c108cf3070bad3449c7e0006"><div class="ttname"><a href="base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006">DCHECK</a></div><div class="ttdeci">#define DCHECK(condition)</div><div class="ttdef"><b>Definition:</b> <a href="base_2logging_8h_source.html#l00884">base/logging.h:884</a></div></div>
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<div class="ttc" id="abase_2logging_8h_html_ae89df3243bbb8341130c7b3f44145ea0"><div class="ttname"><a href="base_2logging_8h.html#ae89df3243bbb8341130c7b3f44145ea0">DCHECK_EQ</a></div><div class="ttdeci">#define DCHECK_EQ(val1, val2)</div><div class="ttdef"><b>Definition:</b> <a href="base_2logging_8h_source.html#l00885">base/logging.h:885</a></div></div>
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<div class="ttc" id="aclass_wall_timer_html"><div class="ttname"><a href="class_wall_timer.html">WallTimer</a></div><div class="ttdef"><b>Definition:</b> <a href="timer_8h_source.html#l00023">timer.h:23</a></div></div>
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<div class="ttc" id="aclass_wall_timer_html_a07aaf1227e4d645f15e0a964f54ef291"><div class="ttname"><a href="class_wall_timer.html#a07aaf1227e4d645f15e0a964f54ef291">WallTimer::Start</a></div><div class="ttdeci">void Start()</div><div class="ttdef"><b>Definition:</b> <a href="timer_8h_source.html#l00031">timer.h:31</a></div></div>
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<div class="ttc" id="aclass_wall_timer_html_aec56fe080959ecebec3feaed9dafde84"><div class="ttname"><a href="class_wall_timer.html#aec56fe080959ecebec3feaed9dafde84">WallTimer::Get</a></div><div class="ttdeci">double Get() const</div><div class="ttdef"><b>Definition:</b> <a href="timer_8h_source.html#l00045">timer.h:45</a></div></div>
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<div class="ttc" id="aclassabsl_1_1_strong_vector_html"><div class="ttname"><a href="classabsl_1_1_strong_vector.html">absl::StrongVector< LiteralIndex, bool ></a></div></div>
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<div class="ttc" id="aclassabsl_1_1_strong_vector_html_a184fe69018ae421dcf31c964bfe40576"><div class="ttname"><a href="classabsl_1_1_strong_vector.html#a184fe69018ae421dcf31c964bfe40576">absl::StrongVector::assign</a></div><div class="ttdeci">void assign(size_type n, const value_type &val)</div><div class="ttdef"><b>Definition:</b> <a href="strong__vector_8h_source.html#l00131">strong_vector.h:131</a></div></div>
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<div class="ttc" id="aclassabsl_1_1_strong_vector_html_a4e3670a285a3642eaa07f66766cffa72"><div class="ttname"><a href="classabsl_1_1_strong_vector.html#a4e3670a285a3642eaa07f66766cffa72">absl::StrongVector::resize</a></div><div class="ttdeci">void resize(size_type new_size)</div><div class="ttdef"><b>Definition:</b> <a href="strong__vector_8h_source.html#l00150">strong_vector.h:150</a></div></div>
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<div class="ttc" id="aclassabsl_1_1_strong_vector_html_a60304b65bf89363bcc3165d3cde67f86"><div class="ttname"><a href="classabsl_1_1_strong_vector.html#a60304b65bf89363bcc3165d3cde67f86">absl::StrongVector::size</a></div><div class="ttdeci">size_type size() const</div><div class="ttdef"><b>Definition:</b> <a href="strong__vector_8h_source.html#l00147">strong_vector.h:147</a></div></div>
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<div class="ttc" id="aclassabsl_1_1_strong_vector_html_a9263000d449fdccb6cb70b303063e60b"><div class="ttname"><a href="classabsl_1_1_strong_vector.html#a9263000d449fdccb6cb70b303063e60b">absl::StrongVector::push_back</a></div><div class="ttdeci">void push_back(const value_type &x)</div><div class="ttdef"><b>Definition:</b> <a href="strong__vector_8h_source.html#l00158">strong_vector.h:158</a></div></div>
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<div class="ttc" id="aclassabsl_1_1_strong_vector_html_ac8bb3912a3ce86b15842e79d0b421204"><div class="ttname"><a href="classabsl_1_1_strong_vector.html#ac8bb3912a3ce86b15842e79d0b421204">absl::StrongVector::clear</a></div><div class="ttdeci">void clear()</div><div class="ttdef"><b>Definition:</b> <a href="strong__vector_8h_source.html#l00170">strong_vector.h:170</a></div></div>
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<div class="ttc" id="aclassabsl_1_1_strong_vector_html_acad38d52497a975bfb6f2f6acd76631f"><div class="ttname"><a href="classabsl_1_1_strong_vector.html#acad38d52497a975bfb6f2f6acd76631f">absl::StrongVector::end</a></div><div class="ttdeci">iterator end()</div><div class="ttdef"><b>Definition:</b> <a href="strong__vector_8h_source.html#l00140">strong_vector.h:140</a></div></div>
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<div class="ttc" id="aclassabsl_1_1_strong_vector_html_ad69bd11391be1a1dba5c8202259664f8"><div class="ttname"><a href="classabsl_1_1_strong_vector.html#ad69bd11391be1a1dba5c8202259664f8">absl::StrongVector::begin</a></div><div class="ttdeci">iterator begin()</div><div class="ttdef"><b>Definition:</b> <a href="strong__vector_8h_source.html#l00138">strong_vector.h:138</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_integer_priority_queue_html_a06fe50b32a75c0a071b68ebbacb8f681"><div class="ttname"><a href="classoperations__research_1_1_integer_priority_queue.html#a06fe50b32a75c0a071b68ebbacb8f681">operations_research::IntegerPriorityQueue::Contains</a></div><div class="ttdeci">bool Contains(int index) const</div><div class="ttdef"><b>Definition:</b> <a href="integer__pq_8h_source.html#l00067">integer_pq.h:67</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_integer_priority_queue_html_a115ac0fc2fcd2f50cf756b94a329fb3c"><div class="ttname"><a href="classoperations__research_1_1_integer_priority_queue.html#a115ac0fc2fcd2f50cf756b94a329fb3c">operations_research::IntegerPriorityQueue::ChangePriority</a></div><div class="ttdeci">void ChangePriority(Element element)</div><div class="ttdef"><b>Definition:</b> <a href="integer__pq_8h_source.html#l00105">integer_pq.h:105</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_integer_priority_queue_html_a21cecbc35e3da9931f94afa3229354dc"><div class="ttname"><a href="classoperations__research_1_1_integer_priority_queue.html#a21cecbc35e3da9931f94afa3229354dc">operations_research::IntegerPriorityQueue::Reserve</a></div><div class="ttdeci">void Reserve(int n)</div><div class="ttdef"><b>Definition:</b> <a href="integer__pq_8h_source.html#l00048">integer_pq.h:48</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_integer_priority_queue_html_a260b134ff6e3aa564e8ba1f879aea3d9"><div class="ttname"><a href="classoperations__research_1_1_integer_priority_queue.html#a260b134ff6e3aa564e8ba1f879aea3d9">operations_research::IntegerPriorityQueue::Add</a></div><div class="ttdeci">void Add(Element element)</div><div class="ttdef"><b>Definition:</b> <a href="integer__pq_8h_source.html#l00071">integer_pq.h:71</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_integer_priority_queue_html_a701a584ce72cccbcce9cb0656b6c898b"><div class="ttname"><a href="classoperations__research_1_1_integer_priority_queue.html#a701a584ce72cccbcce9cb0656b6c898b">operations_research::IntegerPriorityQueue::Pop</a></div><div class="ttdeci">void Pop()</div><div class="ttdef"><b>Definition:</b> <a href="integer__pq_8h_source.html#l00079">integer_pq.h:79</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_integer_priority_queue_html_a8e12342fc420701fbffd97025421575a"><div class="ttname"><a href="classoperations__research_1_1_integer_priority_queue.html#a8e12342fc420701fbffd97025421575a">operations_research::IntegerPriorityQueue::IsEmpty</a></div><div class="ttdeci">bool IsEmpty() const</div><div class="ttdef"><b>Definition:</b> <a href="integer__pq_8h_source.html#l00057">integer_pq.h:57</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_integer_priority_queue_html_a8f1cb7a5e2de2945a3dcecd15a09a0a4"><div class="ttname"><a href="classoperations__research_1_1_integer_priority_queue.html#a8f1cb7a5e2de2945a3dcecd15a09a0a4">operations_research::IntegerPriorityQueue::Top</a></div><div class="ttdeci">Element Top() const</div><div class="ttdef"><b>Definition:</b> <a href="integer__pq_8h_source.html#l00078">integer_pq.h:78</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_sparse_bitset_html"><div class="ttname"><a href="classoperations__research_1_1_sparse_bitset.html">operations_research::SparseBitset< LiteralIndex ></a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_sparse_bitset_html_a41f798a04019147982b29c576ff9d8b7"><div class="ttname"><a href="classoperations__research_1_1_sparse_bitset.html#a41f798a04019147982b29c576ff9d8b7">operations_research::SparseBitset::Set</a></div><div class="ttdeci">void Set(IntegerType index)</div><div class="ttdef"><b>Definition:</b> <a href="bitset_8h_source.html#l00803">bitset.h:803</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_sparse_bitset_html_ab4bc8236a9bfe59526e353800a0f0470"><div class="ttname"><a href="classoperations__research_1_1_sparse_bitset.html#ab4bc8236a9bfe59526e353800a0f0470">operations_research::SparseBitset::SparseClearAll</a></div><div class="ttdeci">void SparseClearAll()</div><div class="ttdef"><b>Definition:</b> <a href="bitset_8h_source.html#l00770">bitset.h:770</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_time_limit_html_a810d5f7aaf80cc09cf5a094e20c1aaca"><div class="ttname"><a href="classoperations__research_1_1_time_limit.html#a810d5f7aaf80cc09cf5a094e20c1aaca">operations_research::TimeLimit::LimitReached</a></div><div class="ttdeci">bool LimitReached()</div><div class="ttdoc">Returns true when the external limit is true, or the deterministic time is over the deterministic lim...</div><div class="ttdef"><b>Definition:</b> <a href="time__limit_8h_source.html#l00532">time_limit.h:532</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_time_limit_html_ac7e861414a70fc937d18bc7ca743fc98"><div class="ttname"><a href="classoperations__research_1_1_time_limit.html#ac7e861414a70fc937d18bc7ca743fc98">operations_research::TimeLimit::GetElapsedDeterministicTime</a></div><div class="ttdeci">double GetElapsedDeterministicTime() const</div><div class="ttdoc">Returns the elapsed deterministic time since the construction of this object.</div><div class="ttdef"><b>Definition:</b> <a href="time__limit_8h_source.html#l00260">time_limit.h:260</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_time_limit_html_af90cfd1fc238433fc303ee28c5914eb9"><div class="ttname"><a href="classoperations__research_1_1_time_limit.html#af90cfd1fc238433fc303ee28c5914eb9">operations_research::TimeLimit::AdvanceDeterministicTime</a></div><div class="ttdeci">void AdvanceDeterministicTime(double deterministic_duration)</div><div class="ttdoc">Advances the deterministic time.</div><div class="ttdef"><b>Definition:</b> <a href="time__limit_8h_source.html#l00226">time_limit.h:226</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_binary_implication_graph_html_a193e09b22c8bb9f6168375efea6fe6ba"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#a193e09b22c8bb9f6168375efea6fe6ba">operations_research::sat::BinaryImplicationGraph::num_redundant_literals</a></div><div class="ttdeci">int64 num_redundant_literals() const</div><div class="ttdef"><b>Definition:</b> <a href="clause_8h_source.html#l00621">clause.h:621</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_binary_implication_graph_html_a1f591be5334541874ba049873235f0a9"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#a1f591be5334541874ba049873235f0a9">operations_research::sat::BinaryImplicationGraph::Propagate</a></div><div class="ttdeci">bool Propagate(Trail *trail) final</div><div class="ttdef"><b>Definition:</b> <a href="clause_8cc_source.html#l00730">clause.cc:730</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_binary_implication_graph_html_a29218ade45d7df87f01459565526cfe2"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#a29218ade45d7df87f01459565526cfe2">operations_research::sat::BinaryImplicationGraph::ComputeTransitiveReduction</a></div><div class="ttdeci">bool ComputeTransitiveReduction(bool log_info=false)</div><div class="ttdef"><b>Definition:</b> <a href="clause_8cc_source.html#l01311">clause.cc:1311</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_binary_implication_graph_html_a44c239ce3ac9f4886aa735ae3071a2f2"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#a44c239ce3ac9f4886aa735ae3071a2f2">operations_research::sat::BinaryImplicationGraph::literal_size</a></div><div class="ttdeci">int64 literal_size() const</div><div class="ttdef"><b>Definition:</b> <a href="clause_8h_source.html#l00636">clause.h:636</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_binary_implication_graph_html_a6dcddbd6c9e8a05ca2170a13c9ff8cbb"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#a6dcddbd6c9e8a05ca2170a13c9ff8cbb">operations_research::sat::BinaryImplicationGraph::num_implications</a></div><div class="ttdeci">int64 num_implications() const</div><div class="ttdef"><b>Definition:</b> <a href="clause_8h_source.html#l00635">clause.h:635</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_binary_implication_graph_html_a6fac58ca16fd746d7488a0a97f6965bd"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#a6fac58ca16fd746d7488a0a97f6965bd">operations_research::sat::BinaryImplicationGraph::RepresentativeOf</a></div><div class="ttdeci">Literal RepresentativeOf(Literal l) const</div><div class="ttdef"><b>Definition:</b> <a href="clause_8h_source.html#l00561">clause.h:561</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_binary_implication_graph_html_a7eb6126b57ff4ab8246fe54f4e5550f4"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#a7eb6126b57ff4ab8246fe54f4e5550f4">operations_research::sat::BinaryImplicationGraph::DirectImplications</a></div><div class="ttdeci">const std::vector< Literal > & DirectImplications(Literal literal)</div><div class="ttdef"><b>Definition:</b> <a href="clause_8cc_source.html#l01799">clause.cc:1799</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_binary_implication_graph_html_a92844929b07caef45924b8c5e3a5a05c"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#a92844929b07caef45924b8c5e3a5a05c">operations_research::sat::BinaryImplicationGraph::IsRedundant</a></div><div class="ttdeci">bool IsRedundant(Literal l) const</div><div class="ttdef"><b>Definition:</b> <a href="clause_8h_source.html#l00620">clause.h:620</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_binary_implication_graph_html_aac261e221628d6a51be7243563659929"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#aac261e221628d6a51be7243563659929">operations_research::sat::BinaryImplicationGraph::DetectEquivalences</a></div><div class="ttdeci">bool DetectEquivalences(bool log_info=false)</div><div class="ttdef"><b>Definition:</b> <a href="clause_8cc_source.html#l01124">clause.cc:1124</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_binary_implication_graph_html_ab64429b401679aee0bbd618449a9152a"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#ab64429b401679aee0bbd618449a9152a">operations_research::sat::BinaryImplicationGraph::CleanupAllRemovedVariables</a></div><div class="ttdeci">void CleanupAllRemovedVariables()</div><div class="ttdef"><b>Definition:</b> <a href="clause_8cc_source.html#l01930">clause.cc:1930</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_binary_implication_graph_html_ab95a602604a2056d11cba9119e490236"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#ab95a602604a2056d11cba9119e490236">operations_research::sat::BinaryImplicationGraph::RemoveBooleanVariable</a></div><div class="ttdeci">void RemoveBooleanVariable(BooleanVariable var, std::deque< std::vector< Literal >> *postsolve_clauses)</div><div class="ttdef"><b>Definition:</b> <a href="clause_8cc_source.html#l01887">clause.cc:1887</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_binary_implication_graph_html_abbf0624c5d966c4dcf29eece343e0592"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#abbf0624c5d966c4dcf29eece343e0592">operations_research::sat::BinaryImplicationGraph::FindFailedLiteralAroundVar</a></div><div class="ttdeci">bool FindFailedLiteralAroundVar(BooleanVariable var, bool *is_unsat)</div><div class="ttdef"><b>Definition:</b> <a href="clause_8cc_source.html#l01842">clause.cc:1842</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_binary_implication_graph_html_abcad56047cef75a12528fe99794a6e1e"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#abcad56047cef75a12528fe99794a6e1e">operations_research::sat::BinaryImplicationGraph::RemoveFixedVariables</a></div><div class="ttdeci">void RemoveFixedVariables()</div><div class="ttdef"><b>Definition:</b> <a href="clause_8cc_source.html#l00962">clause.cc:962</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_binary_implication_graph_html_ad2d9e6c6ea7ab13e0d0002a035a6d308"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#ad2d9e6c6ea7ab13e0d0002a035a6d308">operations_research::sat::BinaryImplicationGraph::IsRemoved</a></div><div class="ttdeci">bool IsRemoved(Literal l) const</div><div class="ttdef"><b>Definition:</b> <a href="clause_8h_source.html#l00708">clause.h:708</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_binary_implication_graph_html_ad7144ed926660fe38c0cfbeedbaa8dfc"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#ad7144ed926660fe38c0cfbeedbaa8dfc">operations_research::sat::BinaryImplicationGraph::IsDag</a></div><div class="ttdeci">bool IsDag() const</div><div class="ttdef"><b>Definition:</b> <a href="clause_8h_source.html#l00543">clause.h:543</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_binary_implication_graph_html_addf8503ac6335c8001276ed7760d7508"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#addf8503ac6335c8001276ed7760d7508">operations_research::sat::BinaryImplicationGraph::NumImplicationOnVariableRemoval</a></div><div class="ttdeci">int64 NumImplicationOnVariableRemoval(BooleanVariable var)</div><div class="ttdef"><b>Definition:</b> <a href="clause_8cc_source.html#l01867">clause.cc:1867</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_binary_implication_graph_html_afc581e906dd97aacce13dd14d6a12cf3"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_binary_implication_graph.html#afc581e906dd97aacce13dd14d6a12cf3">operations_research::sat::BinaryImplicationGraph::DirectImplicationsEstimatedSize</a></div><div class="ttdeci">int DirectImplicationsEstimatedSize(Literal literal) const</div><div class="ttdef"><b>Definition:</b> <a href="clause_8h_source.html#l00693">clause.h:693</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_blocked_clause_simplifier_html_ad30a040fd97f2cb710bb44c9f048a341"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_blocked_clause_simplifier.html#ad30a040fd97f2cb710bb44c9f048a341">operations_research::sat::BlockedClauseSimplifier::DoOneRound</a></div><div class="ttdeci">void DoOneRound(bool log_info)</div><div class="ttdef"><b>Definition:</b> <a href="sat__inprocessing_8cc_source.html#l00889">sat_inprocessing.cc:889</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_bounded_variable_elimination_html_a1837f97f35b2db520af88985ea7e5666"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_bounded_variable_elimination.html#a1837f97f35b2db520af88985ea7e5666">operations_research::sat::BoundedVariableElimination::DoOneRound</a></div><div class="ttdeci">bool DoOneRound(bool log_info)</div><div class="ttdef"><b>Definition:</b> <a href="sat__inprocessing_8cc_source.html#l01074">sat_inprocessing.cc:1074</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_inprocessing_html_a2e5437cb35da63545f954a80536023e0"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_inprocessing.html#a2e5437cb35da63545f954a80536023e0">operations_research::sat::Inprocessing::InprocessingRound</a></div><div class="ttdeci">bool InprocessingRound()</div><div class="ttdef"><b>Definition:</b> <a href="sat__inprocessing_8cc_source.html#l00138">sat_inprocessing.cc:138</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_inprocessing_html_a33abe26c0696a328c36dd0aa9f0b0f00"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_inprocessing.html#a33abe26c0696a328c36dd0aa9f0b0f00">operations_research::sat::Inprocessing::PresolveLoop</a></div><div class="ttdeci">bool PresolveLoop(SatPresolveOptions options)</div><div class="ttdef"><b>Definition:</b> <a href="sat__inprocessing_8cc_source.html#l00043">sat_inprocessing.cc:43</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_inprocessing_html_a55d41aea8582d314b14874b133eb8bcb"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_inprocessing.html#a55d41aea8582d314b14874b133eb8bcb">operations_research::sat::Inprocessing::MoreFixedVariableToClean</a></div><div class="ttdeci">bool MoreFixedVariableToClean() const</div><div class="ttdef"><b>Definition:</b> <a href="sat__inprocessing_8cc_source.html#l00209">sat_inprocessing.cc:209</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_inprocessing_html_a5641f2b95c6ba972fff06ddd6ff5e29b"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_inprocessing.html#a5641f2b95c6ba972fff06ddd6ff5e29b">operations_research::sat::Inprocessing::RemoveFixedAndEquivalentVariables</a></div><div class="ttdeci">bool RemoveFixedAndEquivalentVariables(bool log_info)</div><div class="ttdef"><b>Definition:</b> <a href="sat__inprocessing_8cc_source.html#l00250">sat_inprocessing.cc:250</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_inprocessing_html_a7fefd67efe60192540adcc4bdea29836"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_inprocessing.html#a7fefd67efe60192540adcc4bdea29836">operations_research::sat::Inprocessing::LevelZeroPropagate</a></div><div class="ttdeci">bool LevelZeroPropagate()</div><div class="ttdef"><b>Definition:</b> <a href="sat__inprocessing_8cc_source.html#l00220">sat_inprocessing.cc:220</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_inprocessing_html_ae07d2afcdeb4149564918774bb584c17"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_inprocessing.html#ae07d2afcdeb4149564918774bb584c17">operations_research::sat::Inprocessing::MoreRedundantVariableToClean</a></div><div class="ttdeci">bool MoreRedundantVariableToClean() const</div><div class="ttdef"><b>Definition:</b> <a href="sat__inprocessing_8cc_source.html#l00214">sat_inprocessing.cc:214</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_inprocessing_html_aeb638f5ec6c2dd765d96e06926c4143f"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_inprocessing.html#aeb638f5ec6c2dd765d96e06926c4143f">operations_research::sat::Inprocessing::SubsumeAndStrenghtenRound</a></div><div class="ttdeci">bool SubsumeAndStrenghtenRound(bool log_info)</div><div class="ttdef"><b>Definition:</b> <a href="sat__inprocessing_8cc_source.html#l00359">sat_inprocessing.cc:359</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_inprocessing_html_af933a36985c24ffed84da1ac4f159e43"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_inprocessing.html#af933a36985c24ffed84da1ac4f159e43">operations_research::sat::Inprocessing::DetectEquivalencesAndStamp</a></div><div class="ttdeci">bool DetectEquivalencesAndStamp(bool use_transitive_reduction, bool log_info)</div><div class="ttdef"><b>Definition:</b> <a href="sat__inprocessing_8cc_source.html#l00228">sat_inprocessing.cc:228</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_literal_html"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_literal.html">operations_research::sat::Literal</a></div><div class="ttdef"><b>Definition:</b> <a href="sat__base_8h_source.html#l00064">sat_base.h:64</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_literal_html_a239e1315c4e975a35537790ba0d913a7"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_literal.html#a239e1315c4e975a35537790ba0d913a7">operations_research::sat::Literal::NegatedIndex</a></div><div class="ttdeci">LiteralIndex NegatedIndex() const</div><div class="ttdef"><b>Definition:</b> <a href="sat__base_8h_source.html#l00085">sat_base.h:85</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_literal_html_a4a11c7c4d7706c09de5e18707c3b5c62"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_literal.html#a4a11c7c4d7706c09de5e18707c3b5c62">operations_research::sat::Literal::Index</a></div><div class="ttdeci">LiteralIndex Index() const</div><div class="ttdef"><b>Definition:</b> <a href="sat__base_8h_source.html#l00084">sat_base.h:84</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_literal_html_a886e9c024f7209181c0a850b6e90c644"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_literal.html#a886e9c024f7209181c0a850b6e90c644">operations_research::sat::Literal::Negated</a></div><div class="ttdeci">Literal Negated() const</div><div class="ttdef"><b>Definition:</b> <a href="sat__base_8h_source.html#l00091">sat_base.h:91</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_literal_watchers_html_a0569d77056e622964bd02dd901950ede"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_literal_watchers.html#a0569d77056e622964bd02dd901950ede">operations_research::sat::LiteralWatchers::AllClausesInCreationOrder</a></div><div class="ttdeci">const std::vector< SatClause * > & AllClausesInCreationOrder() const</div><div class="ttdef"><b>Definition:</b> <a href="clause_8h_source.html#l00211">clause.h:211</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_literal_watchers_html_a0ddf4dc22639ee58f75985d875d1fd2d"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_literal_watchers.html#a0ddf4dc22639ee58f75985d875d1fd2d">operations_research::sat::LiteralWatchers::InprocessingFixLiteral</a></div><div class="ttdeci">ABSL_MUST_USE_RESULT bool InprocessingFixLiteral(Literal true_literal)</div><div class="ttdef"><b>Definition:</b> <a href="clause_8cc_source.html#l00339">clause.cc:339</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_literal_watchers_html_a287676c504a640a5569710d352ef6585"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_literal_watchers.html#a287676c504a640a5569710d352ef6585">operations_research::sat::LiteralWatchers::InprocessingRemoveClause</a></div><div class="ttdeci">void InprocessingRemoveClause(SatClause *clause)</div><div class="ttdef"><b>Definition:</b> <a href="clause_8cc_source.html#l00358">clause.cc:358</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_literal_watchers_html_a38c7c4ca12035b254d9497a401606e0c"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_literal_watchers.html#a38c7c4ca12035b254d9497a401606e0c">operations_research::sat::LiteralWatchers::DetachAllClauses</a></div><div class="ttdeci">void DetachAllClauses()</div><div class="ttdef"><b>Definition:</b> <a href="clause_8cc_source.html#l00311">clause.cc:311</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_literal_watchers_html_a44c239ce3ac9f4886aa735ae3071a2f2"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_literal_watchers.html#a44c239ce3ac9f4886aa735ae3071a2f2">operations_research::sat::LiteralWatchers::literal_size</a></div><div class="ttdeci">int64 literal_size() const</div><div class="ttdef"><b>Definition:</b> <a href="clause_8h_source.html#l00234">clause.h:234</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_literal_watchers_html_a56cba28a88a7cffa362a362fdce24dc3"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_literal_watchers.html#a56cba28a88a7cffa362a362fdce24dc3">operations_research::sat::LiteralWatchers::AttachAllClauses</a></div><div class="ttdeci">void AttachAllClauses()</div><div class="ttdef"><b>Definition:</b> <a href="clause_8cc_source.html#l00322">clause.cc:322</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_literal_watchers_html_a74971b631e1b357b2f440dff321b5c9b"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_literal_watchers.html#a74971b631e1b357b2f440dff321b5c9b">operations_research::sat::LiteralWatchers::InprocessingAddClause</a></div><div class="ttdeci">SatClause * InprocessingAddClause(absl::Span< const Literal > new_clause)</div><div class="ttdef"><b>Definition:</b> <a href="clause_8cc_source.html#l00415">clause.cc:415</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_literal_watchers_html_a90d7f1e5714fb18a623b54a9148d636d"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_literal_watchers.html#a90d7f1e5714fb18a623b54a9148d636d">operations_research::sat::LiteralWatchers::num_watched_clauses</a></div><div class="ttdeci">int64 num_watched_clauses() const</div><div class="ttdef"><b>Definition:</b> <a href="clause_8h_source.html#l00237">clause.h:237</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_literal_watchers_html_ab054db78fc1b1e1681d2fc4e9fd1ca45"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_literal_watchers.html#ab054db78fc1b1e1681d2fc4e9fd1ca45">operations_research::sat::LiteralWatchers::IsRemovable</a></div><div class="ttdeci">bool IsRemovable(SatClause *const clause) const</div><div class="ttdef"><b>Definition:</b> <a href="clause_8h_source.html#l00219">clause.h:219</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_literal_watchers_html_ab17b31190c5ab58a1334139848335283"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_literal_watchers.html#ab17b31190c5ab58a1334139848335283">operations_research::sat::LiteralWatchers::InprocessingRewriteClause</a></div><div class="ttdeci">ABSL_MUST_USE_RESULT bool InprocessingRewriteClause(SatClause *clause, absl::Span< const Literal > new_clause)</div><div class="ttdef"><b>Definition:</b> <a href="clause_8cc_source.html#l00367">clause.cc:367</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_literal_watchers_html_ae234022ee7c496416290d1946f56e1ad"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_literal_watchers.html#ae234022ee7c496416290d1946f56e1ad">operations_research::sat::LiteralWatchers::DeleteRemovedClauses</a></div><div class="ttdeci">void DeleteRemovedClauses()</div><div class="ttdef"><b>Definition:</b> <a href="clause_8cc_source.html#l00454">clause.cc:454</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_sat_clause_html"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_sat_clause.html">operations_research::sat::SatClause</a></div><div class="ttdef"><b>Definition:</b> <a href="clause_8h_source.html#l00051">clause.h:51</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_sat_clause_html_a05691332c1a49213875440568a7580aa"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_sat_clause.html#a05691332c1a49213875440568a7580aa">operations_research::sat::SatClause::AsSpan</a></div><div class="ttdeci">absl::Span< const Literal > AsSpan() const</div><div class="ttdef"><b>Definition:</b> <a href="clause_8h_source.html#l00090">clause.h:90</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_sat_clause_html_a78c28538faebd5f023cd4511df6ffee4"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_sat_clause.html#a78c28538faebd5f023cd4511df6ffee4">operations_research::sat::SatClause::empty</a></div><div class="ttdeci">int empty() const</div><div class="ttdef"><b>Definition:</b> <a href="clause_8h_source.html#l00066">clause.h:66</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_sat_clause_html_af9593d4a5ff4274efaf429cb4f9e57cc"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_sat_clause.html#af9593d4a5ff4274efaf429cb4f9e57cc">operations_research::sat::SatClause::size</a></div><div class="ttdeci">int size() const</div><div class="ttdef"><b>Definition:</b> <a href="clause_8h_source.html#l00065">clause.h:65</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_sat_decision_policy_html_a9db2d9ca018c68d3f84ee946e3603886"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_sat_decision_policy.html#a9db2d9ca018c68d3f84ee946e3603886">operations_research::sat::SatDecisionPolicy::MaybeEnablePhaseSaving</a></div><div class="ttdeci">void MaybeEnablePhaseSaving(bool save_phase)</div><div class="ttdef"><b>Definition:</b> <a href="sat__decision_8h_source.html#l00085">sat_decision.h:85</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_sat_solver_html_a8f1f9030283b2fa93b2353ab260ebe1e"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_sat_solver.html#a8f1f9030283b2fa93b2353ab260ebe1e">operations_research::sat::SatSolver::MinimizeSomeClauses</a></div><div class="ttdeci">void MinimizeSomeClauses(int decisions_budget)</div><div class="ttdef"><b>Definition:</b> <a href="sat__solver_8cc_source.html#l01247">sat_solver.cc:1247</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_sat_solver_html_a9d3beb2afe4ae647674b054bf29290e2"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_sat_solver.html#a9d3beb2afe4ae647674b054bf29290e2">operations_research::sat::SatSolver::NumVariables</a></div><div class="ttdeci">int NumVariables() const</div><div class="ttdef"><b>Definition:</b> <a href="sat__solver_8h_source.html#l00082">sat_solver.h:82</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_sat_solver_html_ad63c4461a1384629cb99413c6df8b9ca"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_sat_solver.html#ad63c4461a1384629cb99413c6df8b9ca">operations_research::sat::SatSolver::CurrentDecisionLevel</a></div><div class="ttdeci">int CurrentDecisionLevel() const</div><div class="ttdef"><b>Definition:</b> <a href="sat__solver_8h_source.html#l00360">sat_solver.h:360</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_sat_solver_html_adadc001cbdc7263b106fc5886b60ff39"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_sat_solver.html#adadc001cbdc7263b106fc5886b60ff39">operations_research::sat::SatSolver::Propagate</a></div><div class="ttdeci">bool Propagate()</div><div class="ttdef"><b>Definition:</b> <a href="sat__solver_8cc_source.html#l01622">sat_solver.cc:1622</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_stamping_simplifier_html_a1837f97f35b2db520af88985ea7e5666"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_stamping_simplifier.html#a1837f97f35b2db520af88985ea7e5666">operations_research::sat::StampingSimplifier::DoOneRound</a></div><div class="ttdeci">bool DoOneRound(bool log_info)</div><div class="ttdef"><b>Definition:</b> <a href="sat__inprocessing_8cc_source.html#l00574">sat_inprocessing.cc:574</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_stamping_simplifier_html_a23f1e3b69e90585b8c746ecb2c829d16"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_stamping_simplifier.html#a23f1e3b69e90585b8c746ecb2c829d16">operations_research::sat::StampingSimplifier::ComputeStampsForNextRound</a></div><div class="ttdeci">bool ComputeStampsForNextRound(bool log_info)</div><div class="ttdef"><b>Definition:</b> <a href="sat__inprocessing_8cc_source.html#l00610">sat_inprocessing.cc:610</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_stamping_simplifier_html_a318a00d87baa05fd3e351fa688836de2"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_stamping_simplifier.html#a318a00d87baa05fd3e351fa688836de2">operations_research::sat::StampingSimplifier::ImplicationIsInTree</a></div><div class="ttdeci">bool ImplicationIsInTree(Literal a, Literal b) const</div><div class="ttdef"><b>Definition:</b> <a href="sat__inprocessing_8h_source.html#l00198">sat_inprocessing.h:198</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_stamping_simplifier_html_a5ea60f6738dfbc19da6098ea7e706fae"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_stamping_simplifier.html#a5ea60f6738dfbc19da6098ea7e706fae">operations_research::sat::StampingSimplifier::ProcessClauses</a></div><div class="ttdeci">bool ProcessClauses()</div><div class="ttdef"><b>Definition:</b> <a href="sat__inprocessing_8cc_source.html#l00754">sat_inprocessing.cc:754</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_stamping_simplifier_html_aaf918948eb5d49c45195671882bbb400"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_stamping_simplifier.html#aaf918948eb5d49c45195671882bbb400">operations_research::sat::StampingSimplifier::SampleTreeAndFillParent</a></div><div class="ttdeci">void SampleTreeAndFillParent()</div><div class="ttdef"><b>Definition:</b> <a href="sat__inprocessing_8cc_source.html#l00634">sat_inprocessing.cc:634</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_stamping_simplifier_html_ad23fe7afc319b790417c946b34c5e40b"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_stamping_simplifier.html#ad23fe7afc319b790417c946b34c5e40b">operations_research::sat::StampingSimplifier::ComputeStamps</a></div><div class="ttdeci">bool ComputeStamps()</div><div class="ttdef"><b>Definition:</b> <a href="sat__inprocessing_8cc_source.html#l00669">sat_inprocessing.cc:669</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_trail_html_a8ef12397d1682615bc3108c397734179"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_trail.html#a8ef12397d1682615bc3108c397734179">operations_research::sat::Trail::Index</a></div><div class="ttdeci">int Index() const</div><div class="ttdef"><b>Definition:</b> <a href="sat__base_8h_source.html#l00378">sat_base.h:378</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_variables_assignment_html_a142694366986039454f53b38e8378815"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_variables_assignment.html#a142694366986039454f53b38e8378815">operations_research::sat::VariablesAssignment::LiteralIsAssigned</a></div><div class="ttdeci">bool LiteralIsAssigned(Literal literal) const</div><div class="ttdef"><b>Definition:</b> <a href="sat__base_8h_source.html#l00153">sat_base.h:153</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_variables_assignment_html_a49e751eb6f0e9babd957889bb8e7472d"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_variables_assignment.html#a49e751eb6f0e9babd957889bb8e7472d">operations_research::sat::VariablesAssignment::VariableIsAssigned</a></div><div class="ttdeci">bool VariableIsAssigned(BooleanVariable var) const</div><div class="ttdef"><b>Definition:</b> <a href="sat__base_8h_source.html#l00158">sat_base.h:158</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_variables_assignment_html_a5300129913f51dcb0b1c531e3248490e"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_variables_assignment.html#a5300129913f51dcb0b1c531e3248490e">operations_research::sat::VariablesAssignment::LiteralIsTrue</a></div><div class="ttdeci">bool LiteralIsTrue(Literal literal) const</div><div class="ttdef"><b>Definition:</b> <a href="sat__base_8h_source.html#l00150">sat_base.h:150</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_variables_assignment_html_acfd1646011e643f58fd7dc66d9cc90a5"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_variables_assignment.html#acfd1646011e643f58fd7dc66d9cc90a5">operations_research::sat::VariablesAssignment::LiteralIsFalse</a></div><div class="ttdeci">bool LiteralIsFalse(Literal literal) const</div><div class="ttdef"><b>Definition:</b> <a href="sat__base_8h_source.html#l00147">sat_base.h:147</a></div></div>
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<div class="ttc" id="aconstraint__solver_2table_8cc_html_a344010e26426d6a13411648d988bc9b6"><div class="ttname"><a href="constraint__solver_2table_8cc.html#a344010e26426d6a13411648d988bc9b6">b</a></div><div class="ttdeci">int64 b</div><div class="ttdef"><b>Definition:</b> <a href="constraint__solver_2table_8cc_source.html#l00043">constraint_solver/table.cc:43</a></div></div>
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<div class="ttc" id="aconstraint__solver_2table_8cc_html_af730895c6c6ef6e03caaf6251192dfd2"><div class="ttname"><a href="constraint__solver_2table_8cc.html#af730895c6c6ef6e03caaf6251192dfd2">a</a></div><div class="ttdeci">int64 a</div><div class="ttdef"><b>Definition:</b> <a href="constraint__solver_2table_8cc_source.html#l00042">constraint_solver/table.cc:42</a></div></div>
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<div class="ttc" id="acp__model__solver_8cc_html_ace0951799e72ee99fc07d5e509bc7cbf"><div class="ttname"><a href="cp__model__solver_8cc.html#ace0951799e72ee99fc07d5e509bc7cbf">wall_timer</a></div><div class="ttdeci">WallTimer * wall_timer</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__solver_8cc_source.html#l02115">cp_model_solver.cc:2115</a></div></div>
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<div class="ttc" id="aexpr__array_8cc_html_a472a99923cbe11ae7b5a5d157d9ad465"><div class="ttname"><a href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a></div><div class="ttdeci">IntVar * var</div><div class="ttdef"><b>Definition:</b> <a href="expr__array_8cc_source.html#l01858">expr_array.cc:1858</a></div></div>
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<div class="ttc" id="aintegral__types_8h_html_a7cde0074dfd288f2d70c0e035dacb28a"><div class="ttname"><a href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a></div><div class="ttdeci">int64_t int64</div><div class="ttdef"><b>Definition:</b> <a href="integral__types_8h_source.html#l00034">integral_types.h:34</a></div></div>
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<div class="ttc" id="aintegral__types_8h_html_ab0cfc59ab5792086f6f8b9234320fd33"><div class="ttname"><a href="integral__types_8h.html#ab0cfc59ab5792086f6f8b9234320fd33">kint32max</a></div><div class="ttdeci">static const int32 kint32max</div><div class="ttdef"><b>Definition:</b> <a href="integral__types_8h_source.html#l00051">integral_types.h:51</a></div></div>
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<div class="ttc" id="aintegral__types_8h_html_abc0f5bc07737e498f287334775dff2b6"><div class="ttname"><a href="integral__types_8h.html#abc0f5bc07737e498f287334775dff2b6">uint64</a></div><div class="ttdeci">uint64_t uint64</div><div class="ttdef"><b>Definition:</b> <a href="integral__types_8h_source.html#l00039">integral_types.h:39</a></div></div>
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<div class="ttc" id="alog__severity_8h_html_ab4a2cbab234914b320b7fae11b6e8cb9"><div class="ttname"><a href="log__severity_8h.html#ab4a2cbab234914b320b7fae11b6e8cb9">INFO</a></div><div class="ttdeci">const int INFO</div><div class="ttdef"><b>Definition:</b> <a href="log__severity_8h_source.html#l00031">log_severity.h:31</a></div></div>
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<div class="ttc" id="amacros_8h_html_a7f536a3b33f9bed8f75734e035d30725"><div class="ttname"><a href="macros_8h.html#a7f536a3b33f9bed8f75734e035d30725">DEBUG_MODE</a></div><div class="ttdeci">const bool DEBUG_MODE</div><div class="ttdef"><b>Definition:</b> <a href="macros_8h_source.html#l00024">macros.h:24</a></div></div>
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<div class="ttc" id="anamespacegtl_html_a288a1dc92da5d3ad62d4bc4cec9e8b1d"><div class="ttname"><a href="namespacegtl.html#a288a1dc92da5d3ad62d4bc4cec9e8b1d">gtl::STLSortAndRemoveDuplicates</a></div><div class="ttdeci">void STLSortAndRemoveDuplicates(T *v, const LessFunc &less_func)</div><div class="ttdef"><b>Definition:</b> <a href="stl__util_8h_source.html#l00058">stl_util.h:58</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1glop_html_abec9e934a51aa2ab519684cc0f446a41"><div class="ttname"><a href="namespaceoperations__research_1_1glop.html#abec9e934a51aa2ab519684cc0f446a41">operations_research::glop::Index</a></div><div class="ttdeci">int32 Index</div><div class="ttdef"><b>Definition:</b> <a href="lp__types_8h_source.html#l00037">lp_types.h:37</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_a2dbcb7017d468a17bdb30252af5c6c31"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#a2dbcb7017d468a17bdb30252af5c6c31">operations_research::sat::kNoLiteralIndex</a></div><div class="ttdeci">const LiteralIndex kNoLiteralIndex(-1)</div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_a865df3eeca0b96bf7fda22b016b80bc2"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#a865df3eeca0b96bf7fda22b016b80bc2">operations_research::sat::FailedLiteralProbingRound</a></div><div class="ttdeci">bool FailedLiteralProbingRound(ProbingOptions options, Model *model)</div><div class="ttdef"><b>Definition:</b> <a href="probing_8cc_source.html#l00350">probing.cc:350</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_html"><div class="ttname"><a href="namespaceoperations__research.html">operations_research</a></div><div class="ttdoc">The vehicle routing library lets one model and solve generic vehicle routing problems ranging from th...</div><div class="ttdef"><b>Definition:</b> <a href="dense__doubly__linked__list_8h_source.html#l00021">dense_doubly_linked_list.h:21</a></div></div>
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<div class="ttc" id="aoptimization_8cc_html_af63dcc00f2023fdf498e0829e6fb8a6b"><div class="ttname"><a href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a></div><div class="ttdeci">Literal literal</div><div class="ttdef"><b>Definition:</b> <a href="optimization_8cc_source.html#l00084">optimization.cc:84</a></div></div>
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<div class="ttc" id="apack_8cc_html_a750b5d744c39a06bfb13e6eb010e35d0"><div class="ttname"><a href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a></div><div class="ttdeci">int index</div><div class="ttdef"><b>Definition:</b> <a href="pack_8cc_source.html#l00508">pack.cc:508</a></div></div>
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<div class="ttc" id="aprobing_8h_html"><div class="ttname"><a href="probing_8h.html">probing.h</a></div></div>
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<div class="ttc" id="asat__decision_8h_html"><div class="ttname"><a href="sat__decision_8h.html">sat_decision.h</a></div></div>
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<div class="ttc" id="asat__inprocessing_8cc_html_a73c06a952919ea45217c5a8ec59c4088"><div class="ttname"><a href="sat__inprocessing_8cc.html#a73c06a952919ea45217c5a8ec59c4088">RETURN_IF_FALSE</a></div><div class="ttdeci">#define RETURN_IF_FALSE(f)</div><div class="ttdef"><b>Definition:</b> <a href="sat__inprocessing_8cc_source.html#l00040">sat_inprocessing.cc:40</a></div></div>
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<div class="ttc" id="asat__inprocessing_8h_html"><div class="ttname"><a href="sat__inprocessing_8h.html">sat_inprocessing.h</a></div></div>
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<div class="ttc" id="astl__util_8h_html"><div class="ttname"><a href="stl__util_8h.html">stl_util.h</a></div></div>
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<div class="ttc" id="astrong__vector_8h_html"><div class="ttname"><a href="strong__vector_8h.html">strong_vector.h</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_postsolve_clauses_html_a8cc6d9f1059f26a873442045a72e651e"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_postsolve_clauses.html#a8cc6d9f1059f26a873442045a72e651e">operations_research::sat::PostsolveClauses::clauses</a></div><div class="ttdeci">std::deque< std::vector< Literal > > clauses</div><div class="ttdef"><b>Definition:</b> <a href="sat__inprocessing_8h_source.html#l00047">sat_inprocessing.h:47</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_postsolve_clauses_html_ae70f41a3895b08dd35056d97eec1800e"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_postsolve_clauses.html#ae70f41a3895b08dd35056d97eec1800e">operations_research::sat::PostsolveClauses::AddClauseWithSpecialLiteral</a></div><div class="ttdeci">void AddClauseWithSpecialLiteral(Literal literal, absl::Span< const Literal > clause)</div><div class="ttdef"><b>Definition:</b> <a href="sat__inprocessing_8cc_source.html#l00026">sat_inprocessing.cc:26</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_probing_options_html"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_probing_options.html">operations_research::sat::ProbingOptions</a></div><div class="ttdef"><b>Definition:</b> <a href="probing_8h_source.html#l00122">probing.h:122</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_probing_options_html_a4f572c68b7bf3aac70b3f5292398ff7b"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_probing_options.html#a4f572c68b7bf3aac70b3f5292398ff7b">operations_research::sat::ProbingOptions::deterministic_limit</a></div><div class="ttdeci">double deterministic_limit</div><div class="ttdef"><b>Definition:</b> <a href="probing_8h_source.html#l00143">probing.h:143</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_probing_options_html_a54320231778412ca00e50eb821c95aa6"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_probing_options.html#a54320231778412ca00e50eb821c95aa6">operations_research::sat::ProbingOptions::log_info</a></div><div class="ttdeci">bool log_info</div><div class="ttdef"><b>Definition:</b> <a href="probing_8h_source.html#l00185">probing.h:185</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_probing_options_html_a9d4ed6726cbb0ec29c0d62faec4b6405"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_probing_options.html#a9d4ed6726cbb0ec29c0d62faec4b6405">operations_research::sat::ProbingOptions::extract_binary_clauses</a></div><div class="ttdeci">bool extract_binary_clauses</div><div class="ttdef"><b>Definition:</b> <a href="probing_8h_source.html#l00163">probing.h:163</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_sat_presolve_options_html"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_sat_presolve_options.html">operations_research::sat::SatPresolveOptions</a></div><div class="ttdef"><b>Definition:</b> <a href="sat__inprocessing_8h_source.html#l00054">sat_inprocessing.h:54</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_sat_presolve_options_html_a54320231778412ca00e50eb821c95aa6"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_sat_presolve_options.html#a54320231778412ca00e50eb821c95aa6">operations_research::sat::SatPresolveOptions::log_info</a></div><div class="ttdeci">bool log_info</div><div class="ttdef"><b>Definition:</b> <a href="sat__inprocessing_8h_source.html#l00060">sat_inprocessing.h:60</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_sat_presolve_options_html_a9251c24a19aaef6f5134a615eff02277"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_sat_presolve_options.html#a9251c24a19aaef6f5134a615eff02277">operations_research::sat::SatPresolveOptions::use_transitive_reduction</a></div><div class="ttdeci">bool use_transitive_reduction</div><div class="ttdef"><b>Definition:</b> <a href="sat__inprocessing_8h_source.html#l00071">sat_inprocessing.h:71</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_sat_presolve_options_html_ac68dd5a27fd973b215de47442bacf1ac"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_sat_presolve_options.html#ac68dd5a27fd973b215de47442bacf1ac">operations_research::sat::SatPresolveOptions::extract_binary_clauses_in_probing</a></div><div class="ttdeci">bool extract_binary_clauses_in_probing</div><div class="ttdef"><b>Definition:</b> <a href="sat__inprocessing_8h_source.html#l00063">sat_inprocessing.h:63</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_sat_presolve_options_html_afac11ce59af8fa30ab784cfa4fb36297"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_sat_presolve_options.html#afac11ce59af8fa30ab784cfa4fb36297">operations_research::sat::SatPresolveOptions::deterministic_time_limit</a></div><div class="ttdeci">double deterministic_time_limit</div><div class="ttdef"><b>Definition:</b> <a href="sat__inprocessing_8h_source.html#l00056">sat_inprocessing.h:56</a></div></div>
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<div class="ttc" id="atimer_8h_html"><div class="ttname"><a href="timer_8h.html">timer.h</a></div></div>
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<div class="ttc" id="avlog__is__on_8h_html_a956152cad330225654d128f35c00efce"><div class="ttname"><a href="vlog__is__on_8h.html#a956152cad330225654d128f35c00efce">VLOG_IS_ON</a></div><div class="ttdeci">#define VLOG_IS_ON(verboselevel)</div><div class="ttdef"><b>Definition:</b> <a href="vlog__is__on_8h_source.html#l00041">vlog_is_on.h:41</a></div></div>
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