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<a href="circuit_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="circuit_8h.html">ortools/sat/circuit.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 <algorithm></span></div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>  </div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor">#include "absl/container/flat_hash_map.h"</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="map__util_8h.html">ortools/base/map_util.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="sat__solver_8h.html">ortools/sat/sat_solver.h</a>"</span></div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>  </div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</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="l00023"></a><span class="lineno"> 23</span> <span class="keyword">namespace </span>sat {</div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  </div>
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<div class="line"><a name="l00025"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_circuit_propagator.html#ab724d1b4067da7ec830cb4d1b8284ee7"> 25</a></span> <a class="code" href="classoperations__research_1_1sat_1_1_circuit_propagator.html#ab724d1b4067da7ec830cb4d1b8284ee7">CircuitPropagator::CircuitPropagator</a>(<span class="keyword">const</span> <span class="keywordtype">int</span> num_nodes,</div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  <span class="keyword">const</span> std::vector<int>& tails,</div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  <span class="keyword">const</span> std::vector<int>& heads,</div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  <span class="keyword">const</span> std::vector<Literal>& literals,</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_circuit_propagator_1_1_options.html">Options</a> options, <a class="code" href="classoperations__research_1_1sat_1_1_model.html">Model</a>* <a class="code" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>)</div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  : num_nodes_(num_nodes),</div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  options_(options),</div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  trail_(<a class="code" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->GetOrCreate<<a class="code" href="classoperations__research_1_1sat_1_1_trail.html">Trail</a>>()),</div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  assignment_(trail_->Assignment()) {</div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  CHECK(!tails.empty()) << <span class="stringliteral">"Empty constraint, shouldn't be constructed!"</span>;</div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  next_.resize(num_nodes_, -1);</div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  prev_.resize(num_nodes_, -1);</div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  next_literal_.resize(num_nodes_);</div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  must_be_in_cycle_.resize(num_nodes_);</div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  absl::flat_hash_map<LiteralIndex, int> literal_to_watch_index;</div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  </div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> num_arcs = tails.size();</div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  graph_.reserve(num_arcs);</div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  self_arcs_.resize(num_nodes_,</div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <a class="code" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->GetOrCreate<<a class="code" href="classoperations__research_1_1sat_1_1_integer_encoder.html">IntegerEncoder</a>>()-><a class="code" href="classoperations__research_1_1sat_1_1_integer_encoder.html#a299520ab923d28b4ee3051fe476d69fe">GetFalseLiteral</a>());</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> arc = 0; arc < num_arcs; ++arc) {</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="routing__flow_8cc.html#ac891d9f514e55ec8ee1212757a147888">head</a> = heads[arc];</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">int</span> <a class="code" href="routing__flow_8cc.html#a10b672faee4b99c6a02feb0e343f3b0f">tail</a> = tails[arc];</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keyword">const</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> = literals[arc];</div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keywordflow">if</span> (assignment_.<a class="code" href="classoperations__research_1_1sat_1_1_variables_assignment.html#acfd1646011e643f58fd7dc66d9cc90a5">LiteralIsFalse</a>(<a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>)) <span class="keywordflow">continue</span>;</div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  </div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keywordflow">if</span> (<a class="code" href="routing__flow_8cc.html#a10b672faee4b99c6a02feb0e343f3b0f">tail</a> == <a class="code" href="routing__flow_8cc.html#ac891d9f514e55ec8ee1212757a147888">head</a>) {</div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  self_arcs_[<a class="code" href="routing__flow_8cc.html#a10b672faee4b99c6a02feb0e343f3b0f">tail</a>] = <a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>;</div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  } <span class="keywordflow">else</span> {</div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  graph_[{<a class="code" href="routing__flow_8cc.html#a10b672faee4b99c6a02feb0e343f3b0f">tail</a>, <a class="code" href="routing__flow_8cc.html#ac891d9f514e55ec8ee1212757a147888">head</a>}] = <a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>;</div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  }</div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  </div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keywordflow">if</span> (assignment_.<a class="code" href="classoperations__research_1_1sat_1_1_variables_assignment.html#a5300129913f51dcb0b1c531e3248490e">LiteralIsTrue</a>(<a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>)) {</div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keywordflow">if</span> (next_[<a class="code" href="routing__flow_8cc.html#a10b672faee4b99c6a02feb0e343f3b0f">tail</a>] != -1 || prev_[<a class="code" href="routing__flow_8cc.html#ac891d9f514e55ec8ee1212757a147888">head</a>] != -1) {</div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  VLOG(1) << <span class="stringliteral">"Trivially UNSAT or duplicate arcs while adding "</span> << <a class="code" href="routing__flow_8cc.html#a10b672faee4b99c6a02feb0e343f3b0f">tail</a></div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  << <span class="stringliteral">" -> "</span> << <a class="code" href="routing__flow_8cc.html#ac891d9f514e55ec8ee1212757a147888">head</a>;</div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <a class="code" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->GetOrCreate<<a class="code" href="classoperations__research_1_1sat_1_1_sat_solver.html">SatSolver</a>>()->NotifyThatModelIsUnsat();</div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keywordflow">return</span>;</div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  }</div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  AddArc(<a class="code" href="routing__flow_8cc.html#a10b672faee4b99c6a02feb0e343f3b0f">tail</a>, <a class="code" href="routing__flow_8cc.html#ac891d9f514e55ec8ee1212757a147888">head</a>, <a class="code" href="namespaceoperations__research_1_1sat.html#a2dbcb7017d468a17bdb30252af5c6c31">kNoLiteralIndex</a>);</div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keywordflow">continue</span>;</div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  }</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">// Tricky: For self-arc, we watch instead when the arc become false.</span></div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keyword">const</span> <a class="code" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a> watched_literal = <a class="code" href="routing__flow_8cc.html#a10b672faee4b99c6a02feb0e343f3b0f">tail</a> == <a class="code" href="routing__flow_8cc.html#ac891d9f514e55ec8ee1212757a147888">head</a> ? <a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>.Negated() : <a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>;</div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keywordtype">int</span> watch_index = <a class="code" href="namespacegtl.html#abc18f60961e36340e64e428827c0e38e">gtl::FindWithDefault</a>(literal_to_watch_index,</div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  watched_literal.<a class="code" href="classoperations__research_1_1sat_1_1_literal.html#a4a11c7c4d7706c09de5e18707c3b5c62">Index</a>(), -1);</div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keywordflow">if</span> (watch_index == -1) {</div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  watch_index = watch_index_to_literal_.size();</div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  literal_to_watch_index[watched_literal.<a class="code" href="classoperations__research_1_1sat_1_1_literal.html#a4a11c7c4d7706c09de5e18707c3b5c62">Index</a>()] = watch_index;</div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  watch_index_to_literal_.push_back(watched_literal);</div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  watch_index_to_arcs_.push_back(std::vector<Arc>());</div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  }</div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  watch_index_to_arcs_[watch_index].push_back({<a class="code" href="routing__flow_8cc.html#a10b672faee4b99c6a02feb0e343f3b0f">tail</a>, <a class="code" href="routing__flow_8cc.html#ac891d9f514e55ec8ee1212757a147888">head</a>});</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>  </div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> node = 0; node < num_nodes_; ++node) {</div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keywordflow">if</span> (assignment_.<a class="code" href="classoperations__research_1_1sat_1_1_variables_assignment.html#acfd1646011e643f58fd7dc66d9cc90a5">LiteralIsFalse</a>(self_arcs_[node])) {</div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="comment">// For the multiple_subcircuit_through_zero case, must_be_in_cycle_ will</span></div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="comment">// be const and only contains zero.</span></div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keywordflow">if</span> (node == 0 || !options_.<a class="code" href="structoperations__research_1_1sat_1_1_circuit_propagator_1_1_options.html#af1123baeaa5412b68d37d8adf43ccb7c">multiple_subcircuit_through_zero</a>) {</div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  must_be_in_cycle_[rev_must_be_in_cycle_size_++] = node;</div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  }</div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  }</div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  }</div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</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"><a class="line" href="classoperations__research_1_1sat_1_1_circuit_propagator.html#a6ee8ed57254aec3ae99d399bae5b3736"> 92</a></span> <span class="keywordtype">void</span> <a class="code" href="classoperations__research_1_1sat_1_1_circuit_propagator.html#a6ee8ed57254aec3ae99d399bae5b3736">CircuitPropagator::RegisterWith</a>(<a class="code" href="classoperations__research_1_1sat_1_1_generic_literal_watcher.html">GenericLiteralWatcher</a>* watcher) {</div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> <span class="keywordtype">id</span> = watcher-><a class="code" href="classoperations__research_1_1sat_1_1_generic_literal_watcher.html#adeee4ac52bfe0f1b48ee8958bb88b4e3">Register</a>(<span class="keyword">this</span>);</div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> w = 0; w < watch_index_to_literal_.size(); ++w) {</div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  watcher-><a class="code" href="classoperations__research_1_1sat_1_1_generic_literal_watcher.html#a8f6dd74a841475ccb390614d2b212170">WatchLiteral</a>(watch_index_to_literal_[w], <span class="keywordtype">id</span>, w);</div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  }</div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  watcher-><a class="code" href="classoperations__research_1_1sat_1_1_generic_literal_watcher.html#a8b8fcdc97976ca46ea04a03fd874d9b3">RegisterReversibleClass</a>(<span class="keywordtype">id</span>, <span class="keyword">this</span>);</div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  watcher-><a class="code" href="classoperations__research_1_1sat_1_1_generic_literal_watcher.html#a8963fd33e7bd70e749b2a37060ef1274">RegisterReversibleInt</a>(<span class="keywordtype">id</span>, &propagation_trail_index_);</div>
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<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  watcher-><a class="code" href="classoperations__research_1_1sat_1_1_generic_literal_watcher.html#a8963fd33e7bd70e749b2a37060ef1274">RegisterReversibleInt</a>(<span class="keywordtype">id</span>, &rev_must_be_in_cycle_size_);</div>
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<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  </div>
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<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="comment">// This is needed in case a Literal is used for more than one arc, we may</span></div>
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="comment">// propagate it to false/true here, and it might trigger more propagation.</span></div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="comment">//</span></div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="comment">// TODO(user): come up with a test that fail when this is not here.</span></div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  watcher-><a class="code" href="classoperations__research_1_1sat_1_1_generic_literal_watcher.html#aef66ce77e5b87afecf1c5696f44d4d1c">NotifyThatPropagatorMayNotReachFixedPointInOnePass</a>(<span class="keywordtype">id</span>);</div>
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<div class="line"><a name="l00106"></a><span class="lineno"> 106</span> }</div>
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<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  </div>
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<div class="line"><a name="l00108"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_circuit_propagator.html#a176d2c659864433ccd869b5fba8d57af"> 108</a></span> <span class="keywordtype">void</span> <a class="code" href="classoperations__research_1_1sat_1_1_circuit_propagator.html#a176d2c659864433ccd869b5fba8d57af">CircuitPropagator::SetLevel</a>(<span class="keywordtype">int</span> level) {</div>
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="keywordflow">if</span> (level == level_ends_.size()) <span class="keywordflow">return</span>;</div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="keywordflow">if</span> (level > level_ends_.size()) {</div>
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<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keywordflow">while</span> (level > level_ends_.size()) {</div>
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<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  level_ends_.push_back(added_arcs_.size());</div>
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<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  }</div>
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<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keywordflow">return</span>;</div>
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<div class="line"><a name="l00115"></a><span class="lineno"> 115</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>  <span class="comment">// Backtrack.</span></div>
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<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = level_ends_[level]; i < added_arcs_.size(); ++i) {</div>
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<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <span class="keyword">const</span> <a class="code" href="namespaceoperations__research.html#a6894cc7d30a41a5e750f40a7f4751c01">Arc</a> arc = added_arcs_[i];</div>
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<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  next_[arc.tail] = -1;</div>
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<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  prev_[arc.head] = -1;</div>
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<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  }</div>
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<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  added_arcs_.resize(level_ends_[level]);</div>
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<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  level_ends_.resize(level);</div>
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<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> }</div>
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<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  </div>
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<div class="line"><a name="l00127"></a><span class="lineno"> 127</span> <span class="keywordtype">void</span> CircuitPropagator::FillReasonForPath(<span class="keywordtype">int</span> start_node,</div>
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<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  std::vector<Literal>* reason)<span class="keyword"> const </span>{</div>
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<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  CHECK_NE(start_node, -1);</div>
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<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  reason->clear();</div>
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<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <span class="keywordtype">int</span> node = start_node;</div>
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<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="keywordflow">while</span> (next_[node] != -1) {</div>
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<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <span class="keywordflow">if</span> (next_literal_[node] != <a class="code" href="namespaceoperations__research_1_1sat.html#a2dbcb7017d468a17bdb30252af5c6c31">kNoLiteralIndex</a>) {</div>
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<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  reason->push_back(<a class="code" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a>(next_literal_[node]).Negated());</div>
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<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  }</div>
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<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  node = next_[node];</div>
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<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <span class="keywordflow">if</span> (node == start_node) <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  }</div>
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<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> }</div>
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<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  </div>
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<div class="line"><a name="l00141"></a><span class="lineno"> 141</span> <span class="comment">// If multiple_subcircuit_through_zero is true, we never fill next_[0] and</span></div>
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<div class="line"><a name="l00142"></a><span class="lineno"> 142</span> <span class="comment">// prev_[0].</span></div>
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<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> <span class="keywordtype">void</span> CircuitPropagator::AddArc(<span class="keywordtype">int</span> <a class="code" href="routing__flow_8cc.html#a10b672faee4b99c6a02feb0e343f3b0f">tail</a>, <span class="keywordtype">int</span> <a class="code" href="routing__flow_8cc.html#ac891d9f514e55ec8ee1212757a147888">head</a>, LiteralIndex literal_index) {</div>
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<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <span class="keywordflow">if</span> (<a class="code" href="routing__flow_8cc.html#a10b672faee4b99c6a02feb0e343f3b0f">tail</a> != 0 || !options_.<a class="code" href="structoperations__research_1_1sat_1_1_circuit_propagator_1_1_options.html#af1123baeaa5412b68d37d8adf43ccb7c">multiple_subcircuit_through_zero</a>) {</div>
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<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  next_[<a class="code" href="routing__flow_8cc.html#a10b672faee4b99c6a02feb0e343f3b0f">tail</a>] = <a class="code" href="routing__flow_8cc.html#ac891d9f514e55ec8ee1212757a147888">head</a>;</div>
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<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  next_literal_[<a class="code" href="routing__flow_8cc.html#a10b672faee4b99c6a02feb0e343f3b0f">tail</a>] = literal_index;</div>
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<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  }</div>
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<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="keywordflow">if</span> (<a class="code" href="routing__flow_8cc.html#ac891d9f514e55ec8ee1212757a147888">head</a> != 0 || !options_.<a class="code" href="structoperations__research_1_1sat_1_1_circuit_propagator_1_1_options.html#af1123baeaa5412b68d37d8adf43ccb7c">multiple_subcircuit_through_zero</a>) {</div>
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<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  prev_[<a class="code" href="routing__flow_8cc.html#ac891d9f514e55ec8ee1212757a147888">head</a>] = <a class="code" href="routing__flow_8cc.html#a10b672faee4b99c6a02feb0e343f3b0f">tail</a>;</div>
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<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  }</div>
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<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>  </div>
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<div class="line"><a name="l00153"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_circuit_propagator.html#a45321337f970685d9847db005c4b3de1"> 153</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_circuit_propagator.html#a45321337f970685d9847db005c4b3de1">CircuitPropagator::IncrementalPropagate</a>(</div>
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<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="keyword">const</span> std::vector<int>& watch_indices) {</div>
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<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> w : watch_indices) {</div>
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<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="keyword">const</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> = watch_index_to_literal_[w];</div>
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<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <a class="code" href="namespaceoperations__research.html#a6894cc7d30a41a5e750f40a7f4751c01">Arc</a> arc : watch_index_to_arcs_[w]) {</div>
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<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="comment">// Special case for self-arc.</span></div>
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<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="keywordflow">if</span> (arc.tail == arc.head) {</div>
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<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  must_be_in_cycle_[rev_must_be_in_cycle_size_++] = arc.tail;</div>
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<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="keywordflow">continue</span>;</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>  </div>
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<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="comment">// Get rid of the trivial conflicts: At most one incoming and one outgoing</span></div>
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<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <span class="comment">// arc for each nodes.</span></div>
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<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="keywordflow">if</span> (next_[arc.tail] != -1) {</div>
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<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  std::vector<Literal>* conflict = trail_-><a class="code" href="classoperations__research_1_1sat_1_1_trail.html#a84f6b2c778ed597c90f98f0329a25713">MutableConflict</a>();</div>
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<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <span class="keywordflow">if</span> (next_literal_[arc.tail] != <a class="code" href="namespaceoperations__research_1_1sat.html#a2dbcb7017d468a17bdb30252af5c6c31">kNoLiteralIndex</a>) {</div>
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<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  *conflict = {<a class="code" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a>(next_literal_[arc.tail]).<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="l00170"></a><span class="lineno"> 170</span>  <a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>.Negated()};</div>
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<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  } <span class="keywordflow">else</span> {</div>
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<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  *conflict = {<a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>.Negated()};</div>
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<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  }</div>
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<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</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>  <span class="keywordflow">if</span> (prev_[arc.head] != -1) {</div>
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<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  std::vector<Literal>* conflict = trail_-><a class="code" href="classoperations__research_1_1sat_1_1_trail.html#a84f6b2c778ed597c90f98f0329a25713">MutableConflict</a>();</div>
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<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  <span class="keywordflow">if</span> (next_literal_[prev_[arc.head]] != <a class="code" href="namespaceoperations__research_1_1sat.html#a2dbcb7017d468a17bdb30252af5c6c31">kNoLiteralIndex</a>) {</div>
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<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  *conflict = {<a class="code" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a>(next_literal_[prev_[arc.head]]).<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="l00180"></a><span class="lineno"> 180</span>  <a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>.Negated()};</div>
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<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  } <span class="keywordflow">else</span> {</div>
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<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  *conflict = {<a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>.Negated()};</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>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</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>  </div>
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<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  <span class="comment">// Add the arc.</span></div>
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<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  AddArc(arc.tail, arc.head, <a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>.Index());</div>
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<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  added_arcs_.push_back(arc);</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>  }</div>
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<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  <span class="keywordflow">return</span> <a class="code" href="classoperations__research_1_1sat_1_1_circuit_propagator.html#ac1fe9b1f2b978c4283e42f12e586eb1e">Propagate</a>();</div>
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<div class="line"><a name="l00193"></a><span class="lineno"> 193</span> }</div>
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<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  </div>
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<div class="line"><a name="l00195"></a><span class="lineno"> 195</span> <span class="comment">// This function assumes that next_, prev_, next_literal_ and must_be_in_cycle_</span></div>
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<div class="line"><a name="l00196"></a><span class="lineno"> 196</span> <span class="comment">// are all up to date.</span></div>
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<div class="line"><a name="l00197"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_circuit_propagator.html#ac1fe9b1f2b978c4283e42f12e586eb1e"> 197</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_circuit_propagator.html#ac1fe9b1f2b978c4283e42f12e586eb1e">CircuitPropagator::Propagate</a>() {</div>
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<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  processed_.assign(num_nodes_, <span class="keyword">false</span>);</div>
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<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> n = 0; n < num_nodes_; ++n) {</div>
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<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  <span class="keywordflow">if</span> (processed_[n]) <span class="keywordflow">continue</span>;</div>
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<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  <span class="keywordflow">if</span> (next_[n] == n) <span class="keywordflow">continue</span>;</div>
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<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  <span class="keywordflow">if</span> (next_[n] == -1 && prev_[n] == -1) <span class="keywordflow">continue</span>;</div>
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<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  </div>
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<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="comment">// TODO(user): both this and the loop on must_be_in_cycle_ might take some</span></div>
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|
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  <span class="comment">// time on large graph. Optimize if this become an issue.</span></div>
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<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  in_current_path_.assign(num_nodes_, <span class="keyword">false</span>);</div>
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<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  </div>
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<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  <span class="comment">// Find the start and end of the path containing node n. If this is a</span></div>
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<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  <span class="comment">// circuit, we will have start_node == end_node.</span></div>
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<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  <span class="keywordtype">int</span> start_node = n;</div>
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<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  <span class="keywordtype">int</span> end_node = n;</div>
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<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  in_current_path_[n] = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  processed_[n] = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  <span class="keywordflow">while</span> (next_[end_node] != -1) {</div>
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<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  end_node = next_[end_node];</div>
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<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  in_current_path_[end_node] = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  processed_[end_node] = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  <span class="keywordflow">if</span> (end_node == n) <span class="keywordflow">break</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"> 220</span>  <span class="keywordflow">while</span> (prev_[start_node] != -1) {</div>
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<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  start_node = prev_[start_node];</div>
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<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  in_current_path_[start_node] = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  processed_[start_node] = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  <span class="keywordflow">if</span> (start_node == n) <span class="keywordflow">break</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>  </div>
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<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  <span class="comment">// Check if we miss any node that must be in the circuit. Note that the ones</span></div>
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<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  <span class="comment">// for which self_arcs_[i] is kFalseLiteralIndex are first. This is good as</span></div>
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<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  <span class="comment">// it will produce shorter reason. Otherwise we prefer the first that was</span></div>
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<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  <span class="comment">// assigned in the trail.</span></div>
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<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  <span class="keywordtype">bool</span> miss_some_nodes = <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  LiteralIndex extra_reason = <a class="code" href="namespaceoperations__research_1_1sat.html#a969b5056550d96847f8c35f19fd17f50">kFalseLiteralIndex</a>;</div>
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<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < rev_must_be_in_cycle_size_; ++i) {</div>
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<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> node = must_be_in_cycle_[i];</div>
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<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  <span class="keywordflow">if</span> (!in_current_path_[node]) {</div>
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<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  miss_some_nodes = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  extra_reason = self_arcs_[node].Index();</div>
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<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  }</div>
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<div class="line"><a name="l00240"></a><span class="lineno"> 240</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> (miss_some_nodes) {</div>
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<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  <span class="comment">// A circuit that miss a mandatory node is a conflict.</span></div>
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<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  <span class="keywordflow">if</span> (start_node == end_node) {</div>
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<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  FillReasonForPath(start_node, trail_-><a class="code" href="classoperations__research_1_1sat_1_1_trail.html#a84f6b2c778ed597c90f98f0329a25713">MutableConflict</a>());</div>
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|
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  <span class="keywordflow">if</span> (extra_reason != <a class="code" href="namespaceoperations__research_1_1sat.html#a969b5056550d96847f8c35f19fd17f50">kFalseLiteralIndex</a>) {</div>
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<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  trail_-><a class="code" href="classoperations__research_1_1sat_1_1_trail.html#a84f6b2c778ed597c90f98f0329a25713">MutableConflict</a>()->push_back(<a class="code" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a>(extra_reason));</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>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  }</div>
|
|
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  </div>
|
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<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  <span class="comment">// We have an unclosed path. Propagate the fact that it cannot</span></div>
|
|
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  <span class="comment">// be closed into a cycle, i.e. not(end_node -> start_node).</span></div>
|
|
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  <span class="keywordflow">if</span> (start_node != end_node) {</div>
|
|
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  <span class="keyword">const</span> <span class="keyword">auto</span> it = graph_.find({end_node, start_node});</div>
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<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  <span class="keywordflow">if</span> (it == graph_.end()) <span class="keywordflow">continue</span>;</div>
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<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  <span class="keyword">const</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> = it->second;</div>
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<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  <span class="keywordflow">if</span> (assignment_.<a class="code" href="classoperations__research_1_1sat_1_1_variables_assignment.html#acfd1646011e643f58fd7dc66d9cc90a5">LiteralIsFalse</a>(<a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>)) <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  </div>
|
|
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  std::vector<Literal>* reason = trail_-><a class="code" href="classoperations__research_1_1sat_1_1_trail.html#a70e532a108e1f03d6f9112c770ffbedb">GetEmptyVectorToStoreReason</a>();</div>
|
|
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  FillReasonForPath(start_node, reason);</div>
|
|
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  <span class="keywordflow">if</span> (extra_reason != <a class="code" href="namespaceoperations__research_1_1sat.html#a969b5056550d96847f8c35f19fd17f50">kFalseLiteralIndex</a>) {</div>
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<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  reason->push_back(<a class="code" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a>(extra_reason));</div>
|
|
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  }</div>
|
|
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> ok = trail_-><a class="code" href="classoperations__research_1_1sat_1_1_trail.html#aa390738a7cb0521a9c1951f3108c0251">EnqueueWithStoredReason</a>(<a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>.Negated());</div>
|
|
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  <span class="keywordflow">if</span> (!ok) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  }</div>
|
|
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  }</div>
|
|
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  </div>
|
|
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  <span class="comment">// If we have a cycle, we can propagate all the other nodes to point to</span></div>
|
|
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  <span class="comment">// themselves. Otherwise there is nothing else to do.</span></div>
|
|
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  <span class="keywordflow">if</span> (start_node != end_node) <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  <span class="keywordflow">if</span> (options_.<a class="code" href="structoperations__research_1_1sat_1_1_circuit_propagator_1_1_options.html#af1123baeaa5412b68d37d8adf43ccb7c">multiple_subcircuit_through_zero</a>) <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  BooleanVariable variable_with_same_reason = <a class="code" href="namespaceoperations__research_1_1sat.html#add67896a84f6372a648154c5770a0ae0">kNoBooleanVariable</a>;</div>
|
|
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> node = 0; node < num_nodes_; ++node) {</div>
|
|
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  <span class="keywordflow">if</span> (in_current_path_[node]) <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  <span class="keywordflow">if</span> (assignment_.<a class="code" href="classoperations__research_1_1sat_1_1_variables_assignment.html#a5300129913f51dcb0b1c531e3248490e">LiteralIsTrue</a>(self_arcs_[node])) <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  </div>
|
|
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  <span class="comment">// This shouldn't happen because ExactlyOnePerRowAndPerColumn() should</span></div>
|
|
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  <span class="comment">// have executed first and propagated self_arcs_[node] to false.</span></div>
|
|
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  CHECK_EQ(next_[node], -1);</div>
|
|
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  </div>
|
|
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  <span class="comment">// We should have detected that above (miss_some_nodes == true). But we</span></div>
|
|
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  <span class="comment">// still need this for corner cases where the same literal is used for</span></div>
|
|
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  <span class="comment">// many arcs, and we just propagated it here.</span></div>
|
|
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  <span class="keywordflow">if</span> (assignment_.<a class="code" href="classoperations__research_1_1sat_1_1_variables_assignment.html#acfd1646011e643f58fd7dc66d9cc90a5">LiteralIsFalse</a>(self_arcs_[node])) {</div>
|
|
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  FillReasonForPath(start_node, trail_-><a class="code" href="classoperations__research_1_1sat_1_1_trail.html#a84f6b2c778ed597c90f98f0329a25713">MutableConflict</a>());</div>
|
|
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  trail_-><a class="code" href="classoperations__research_1_1sat_1_1_trail.html#a84f6b2c778ed597c90f98f0329a25713">MutableConflict</a>()->push_back(self_arcs_[node]);</div>
|
|
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  }</div>
|
|
<div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  </div>
|
|
<div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  <span class="comment">// Propagate.</span></div>
|
|
<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  <span class="keyword">const</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>(self_arcs_[node]);</div>
|
|
<div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  <span class="keywordflow">if</span> (variable_with_same_reason == <a class="code" href="namespaceoperations__research_1_1sat.html#add67896a84f6372a648154c5770a0ae0">kNoBooleanVariable</a>) {</div>
|
|
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  variable_with_same_reason = <a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>.Variable();</div>
|
|
<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  FillReasonForPath(start_node, trail_-><a class="code" href="classoperations__research_1_1sat_1_1_trail.html#a70e532a108e1f03d6f9112c770ffbedb">GetEmptyVectorToStoreReason</a>());</div>
|
|
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> ok = trail_-><a class="code" href="classoperations__research_1_1sat_1_1_trail.html#aa390738a7cb0521a9c1951f3108c0251">EnqueueWithStoredReason</a>(<a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>);</div>
|
|
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  <span class="keywordflow">if</span> (!ok) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  trail_-><a class="code" href="classoperations__research_1_1sat_1_1_trail.html#a4086a48ef9859b6ed0a5e9dd08d622c7">EnqueueWithSameReasonAs</a>(<a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>, variable_with_same_reason);</div>
|
|
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  }</div>
|
|
<div class="line"><a name="l00303"></a><span class="lineno"> 303</span>  }</div>
|
|
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  }</div>
|
|
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span> }</div>
|
|
<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"><a class="line" href="classoperations__research_1_1sat_1_1_circuit_covering_propagator.html#a154741eb694fbdb51b431c9c0d404496"> 308</a></span> <a class="code" href="classoperations__research_1_1sat_1_1_circuit_covering_propagator.html#a154741eb694fbdb51b431c9c0d404496">CircuitCoveringPropagator::CircuitCoveringPropagator</a>(</div>
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|
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  std::vector<std::vector<Literal>> graph,</div>
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|
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  <span class="keyword">const</span> std::vector<int>& distinguished_nodes, <a class="code" href="classoperations__research_1_1sat_1_1_model.html">Model</a>* <a class="code" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>)</div>
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|
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  : graph_(std::move(graph)),</div>
|
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<div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  num_nodes_(graph_.size()),</div>
|
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<div class="line"><a name="l00313"></a><span class="lineno"> 313</span>  trail_(<a class="code" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->GetOrCreate<<a class="code" href="classoperations__research_1_1sat_1_1_trail.html">Trail</a>>()) {</div>
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<div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  node_is_distinguished_.resize(num_nodes_, <span class="keyword">false</span>);</div>
|
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<div class="line"><a name="l00315"></a><span class="lineno"> 315</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> node : distinguished_nodes) {</div>
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<div class="line"><a name="l00316"></a><span class="lineno"> 316</span>  node_is_distinguished_[node] = <span class="keyword">true</span>;</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> }</div>
|
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<div class="line"><a name="l00319"></a><span class="lineno"> 319</span>  </div>
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<div class="line"><a name="l00320"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_circuit_covering_propagator.html#a6ee8ed57254aec3ae99d399bae5b3736"> 320</a></span> <span class="keywordtype">void</span> <a class="code" href="classoperations__research_1_1sat_1_1_circuit_covering_propagator.html#a6ee8ed57254aec3ae99d399bae5b3736">CircuitCoveringPropagator::RegisterWith</a>(<a class="code" href="classoperations__research_1_1sat_1_1_generic_literal_watcher.html">GenericLiteralWatcher</a>* watcher) {</div>
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<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> watcher_id = watcher-><a class="code" href="classoperations__research_1_1sat_1_1_generic_literal_watcher.html#adeee4ac52bfe0f1b48ee8958bb88b4e3">Register</a>(<span class="keyword">this</span>);</div>
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<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  </div>
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<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  <span class="comment">// Fill fixed_arcs_ with arcs that are initially fixed to true,</span></div>
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<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  <span class="comment">// assign arcs to watch indices.</span></div>
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<div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> node1 = 0; node1 < num_nodes_; node1++) {</div>
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<div class="line"><a name="l00326"></a><span class="lineno"> 326</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> node2 = 0; node2 < num_nodes_; node2++) {</div>
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<div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  <span class="keyword">const</span> <a class="code" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a> l = graph_[node1][node2];</div>
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<div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  <span class="keywordflow">if</span> (trail_-><a class="code" href="classoperations__research_1_1sat_1_1_trail.html#a9789bf03dba611e9be5679d6e902d0c8">Assignment</a>().<a class="code" href="classoperations__research_1_1sat_1_1_variables_assignment.html#acfd1646011e643f58fd7dc66d9cc90a5">LiteralIsFalse</a>(l)) <span class="keywordflow">continue</span>;</div>
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<div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  <span class="keywordflow">if</span> (trail_-><a class="code" href="classoperations__research_1_1sat_1_1_trail.html#a9789bf03dba611e9be5679d6e902d0c8">Assignment</a>().<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="l00330"></a><span class="lineno"> 330</span>  fixed_arcs_.emplace_back(node1, node2);</div>
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<div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  } <span class="keywordflow">else</span> {</div>
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<div class="line"><a name="l00332"></a><span class="lineno"> 332</span>  watcher-><a class="code" href="classoperations__research_1_1sat_1_1_generic_literal_watcher.html#a8f6dd74a841475ccb390614d2b212170">WatchLiteral</a>(l, watcher_id, watch_index_to_arc_.size());</div>
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<div class="line"><a name="l00333"></a><span class="lineno"> 333</span>  watch_index_to_arc_.emplace_back(node1, node2);</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>  }</div>
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<div class="line"><a name="l00336"></a><span class="lineno"> 336</span>  }</div>
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<div class="line"><a name="l00337"></a><span class="lineno"> 337</span>  watcher-><a class="code" href="classoperations__research_1_1sat_1_1_generic_literal_watcher.html#a8b8fcdc97976ca46ea04a03fd874d9b3">RegisterReversibleClass</a>(watcher_id, <span class="keyword">this</span>);</div>
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<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>  </div>
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<div class="line"><a name="l00340"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_circuit_covering_propagator.html#a176d2c659864433ccd869b5fba8d57af"> 340</a></span> <span class="keywordtype">void</span> <a class="code" href="classoperations__research_1_1sat_1_1_circuit_covering_propagator.html#a176d2c659864433ccd869b5fba8d57af">CircuitCoveringPropagator::SetLevel</a>(<span class="keywordtype">int</span> level) {</div>
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<div class="line"><a name="l00341"></a><span class="lineno"> 341</span>  <span class="keywordflow">if</span> (level == level_ends_.size()) <span class="keywordflow">return</span>;</div>
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<div class="line"><a name="l00342"></a><span class="lineno"> 342</span>  <span class="keywordflow">if</span> (level > level_ends_.size()) {</div>
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<div class="line"><a name="l00343"></a><span class="lineno"> 343</span>  <span class="keywordflow">while</span> (level > level_ends_.size()) {</div>
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<div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  level_ends_.push_back(fixed_arcs_.size());</div>
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<div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  }</div>
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<div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  } <span class="keywordflow">else</span> {</div>
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<div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  <span class="comment">// Backtrack.</span></div>
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<div class="line"><a name="l00348"></a><span class="lineno"> 348</span>  fixed_arcs_.resize(level_ends_[level]);</div>
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<div class="line"><a name="l00349"></a><span class="lineno"> 349</span>  level_ends_.resize(level);</div>
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<div class="line"><a name="l00350"></a><span class="lineno"> 350</span>  }</div>
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<div class="line"><a name="l00351"></a><span class="lineno"> 351</span> }</div>
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<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"><a class="line" href="classoperations__research_1_1sat_1_1_circuit_covering_propagator.html#a45321337f970685d9847db005c4b3de1"> 353</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_circuit_covering_propagator.html#a45321337f970685d9847db005c4b3de1">CircuitCoveringPropagator::IncrementalPropagate</a>(</div>
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<div class="line"><a name="l00354"></a><span class="lineno"> 354</span>  <span class="keyword">const</span> std::vector<int>& watch_indices) {</div>
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<div class="line"><a name="l00355"></a><span class="lineno"> 355</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> w : watch_indices) {</div>
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<div class="line"><a name="l00356"></a><span class="lineno"> 356</span>  <span class="keyword">const</span> <span class="keyword">auto</span>& arc = watch_index_to_arc_[w];</div>
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<div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  fixed_arcs_.push_back(arc);</div>
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<div class="line"><a name="l00358"></a><span class="lineno"> 358</span>  }</div>
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<div class="line"><a name="l00359"></a><span class="lineno"> 359</span>  <span class="keywordflow">return</span> <a class="code" href="classoperations__research_1_1sat_1_1_circuit_covering_propagator.html#ac1fe9b1f2b978c4283e42f12e586eb1e">Propagate</a>();</div>
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<div class="line"><a name="l00360"></a><span class="lineno"> 360</span> }</div>
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<div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  </div>
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<div class="line"><a name="l00362"></a><span class="lineno"> 362</span> <span class="keywordtype">void</span> CircuitCoveringPropagator::FillFixedPathInReason(</div>
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<div class="line"><a name="l00363"></a><span class="lineno"> 363</span>  <span class="keywordtype">int</span> start, <span class="keywordtype">int</span> end, std::vector<Literal>* reason) {</div>
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<div class="line"><a name="l00364"></a><span class="lineno"> 364</span>  reason->clear();</div>
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<div class="line"><a name="l00365"></a><span class="lineno"> 365</span>  <span class="keywordtype">int</span> current = start;</div>
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<div class="line"><a name="l00366"></a><span class="lineno"> 366</span>  <span class="keywordflow">do</span> {</div>
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<div class="line"><a name="l00367"></a><span class="lineno"> 367</span>  DCHECK_NE(next_[current], -1);</div>
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<div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  DCHECK(trail_-><a class="code" href="classoperations__research_1_1sat_1_1_trail.html#a9789bf03dba611e9be5679d6e902d0c8">Assignment</a>().<a class="code" href="classoperations__research_1_1sat_1_1_variables_assignment.html#a5300129913f51dcb0b1c531e3248490e">LiteralIsTrue</a>(graph_[current][next_[current]]));</div>
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<div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  reason->push_back(graph_[current][next_[current]].Negated());</div>
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<div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  current = next_[current];</div>
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<div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  } <span class="keywordflow">while</span> (current != end);</div>
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<div class="line"><a name="l00372"></a><span class="lineno"> 372</span> }</div>
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<div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  </div>
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<div class="line"><a name="l00374"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_circuit_covering_propagator.html#ac1fe9b1f2b978c4283e42f12e586eb1e"> 374</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_circuit_covering_propagator.html#ac1fe9b1f2b978c4283e42f12e586eb1e">CircuitCoveringPropagator::Propagate</a>() {</div>
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<div class="line"><a name="l00375"></a><span class="lineno"> 375</span>  <span class="comment">// Gather next_ and prev_ from fixed arcs.</span></div>
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<div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  next_.assign(num_nodes_, -1);</div>
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<div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  prev_.assign(num_nodes_, -1);</div>
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<div class="line"><a name="l00378"></a><span class="lineno"> 378</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">auto</span>& arc : fixed_arcs_) {</div>
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<div class="line"><a name="l00379"></a><span class="lineno"> 379</span>  <span class="comment">// Two arcs go out of arc.first, forbidden.</span></div>
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<div class="line"><a name="l00380"></a><span class="lineno"> 380</span>  <span class="keywordflow">if</span> (next_[arc.first] != -1) {</div>
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<div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  *trail_-><a class="code" href="classoperations__research_1_1sat_1_1_trail.html#a84f6b2c778ed597c90f98f0329a25713">MutableConflict</a>() = {</div>
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<div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  graph_[arc.first][next_[arc.first]].Negated(),</div>
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<div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  graph_[arc.first][arc.second].Negated()};</div>
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<div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00385"></a><span class="lineno"> 385</span>  }</div>
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<div class="line"><a name="l00386"></a><span class="lineno"> 386</span>  next_[arc.first] = arc.second;</div>
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<div class="line"><a name="l00387"></a><span class="lineno"> 387</span>  <span class="comment">// Two arcs come into arc.second, forbidden.</span></div>
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<div class="line"><a name="l00388"></a><span class="lineno"> 388</span>  <span class="keywordflow">if</span> (prev_[arc.second] != -1) {</div>
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<div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  *trail_-><a class="code" href="classoperations__research_1_1sat_1_1_trail.html#a84f6b2c778ed597c90f98f0329a25713">MutableConflict</a>() = {</div>
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<div class="line"><a name="l00390"></a><span class="lineno"> 390</span>  graph_[prev_[arc.second]][arc.second].Negated(),</div>
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<div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  graph_[arc.first][arc.second].Negated()};</div>
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<div class="line"><a name="l00392"></a><span class="lineno"> 392</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
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<div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  }</div>
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<div class="line"><a name="l00394"></a><span class="lineno"> 394</span>  prev_[arc.second] = arc.first;</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>  </div>
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<div class="line"><a name="l00397"></a><span class="lineno"> 397</span>  <span class="comment">// For every node, find partial path/circuit in which the node is.</span></div>
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<div class="line"><a name="l00398"></a><span class="lineno"> 398</span>  <span class="comment">// Use visited_ to visit each path/circuit only once.</span></div>
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<div class="line"><a name="l00399"></a><span class="lineno"> 399</span>  visited_.assign(num_nodes_, <span class="keyword">false</span>);</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> node = 0; node < num_nodes_; node++) {</div>
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<div class="line"><a name="l00401"></a><span class="lineno"> 401</span>  <span class="comment">// Skip if already visited, isolated or loop.</span></div>
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<div class="line"><a name="l00402"></a><span class="lineno"> 402</span>  <span class="keywordflow">if</span> (visited_[node]) <span class="keywordflow">continue</span>;</div>
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<div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  <span class="keywordflow">if</span> (prev_[node] == -1 && next_[node] == -1) <span class="keywordflow">continue</span>;</div>
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<div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  <span class="keywordflow">if</span> (prev_[node] == node) <span class="keywordflow">continue</span>;</div>
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<div class="line"><a name="l00405"></a><span class="lineno"> 405</span>  </div>
|
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<div class="line"><a name="l00406"></a><span class="lineno"> 406</span>  <span class="comment">// Find start of path/circuit.</span></div>
|
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<div class="line"><a name="l00407"></a><span class="lineno"> 407</span>  <span class="keywordtype">int</span> start = node;</div>
|
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<div class="line"><a name="l00408"></a><span class="lineno"> 408</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> current = prev_[node]; current != -1 && current != node;</div>
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<div class="line"><a name="l00409"></a><span class="lineno"> 409</span>  current = prev_[current]) {</div>
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<div class="line"><a name="l00410"></a><span class="lineno"> 410</span>  start = current;</div>
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<div class="line"><a name="l00411"></a><span class="lineno"> 411</span>  }</div>
|
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<div class="line"><a name="l00412"></a><span class="lineno"> 412</span>  </div>
|
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<div class="line"><a name="l00413"></a><span class="lineno"> 413</span>  <span class="comment">// Find distinguished node of path. Fail if there are several,</span></div>
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<div class="line"><a name="l00414"></a><span class="lineno"> 414</span>  <span class="comment">// fail if this is a non loop circuit and there are none.</span></div>
|
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<div class="line"><a name="l00415"></a><span class="lineno"> 415</span>  <span class="keywordtype">int</span> distinguished = node_is_distinguished_[start] ? start : -1;</div>
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<div class="line"><a name="l00416"></a><span class="lineno"> 416</span>  <span class="keywordtype">int</span> current = next_[start];</div>
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<div class="line"><a name="l00417"></a><span class="lineno"> 417</span>  <span class="keywordtype">int</span> end = start;</div>
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<div class="line"><a name="l00418"></a><span class="lineno"> 418</span>  visited_[start] = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00419"></a><span class="lineno"> 419</span>  <span class="keywordflow">while</span> (current != -1 && current != start) {</div>
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<div class="line"><a name="l00420"></a><span class="lineno"> 420</span>  <span class="keywordflow">if</span> (node_is_distinguished_[current]) {</div>
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<div class="line"><a name="l00421"></a><span class="lineno"> 421</span>  <span class="keywordflow">if</span> (distinguished != -1) {</div>
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<div class="line"><a name="l00422"></a><span class="lineno"> 422</span>  FillFixedPathInReason(distinguished, current,</div>
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<div class="line"><a name="l00423"></a><span class="lineno"> 423</span>  trail_-><a class="code" href="classoperations__research_1_1sat_1_1_trail.html#a84f6b2c778ed597c90f98f0329a25713">MutableConflict</a>());</div>
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<div class="line"><a name="l00424"></a><span class="lineno"> 424</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
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<div class="line"><a name="l00425"></a><span class="lineno"> 425</span>  }</div>
|
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<div class="line"><a name="l00426"></a><span class="lineno"> 426</span>  distinguished = current;</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>  visited_[current] = <span class="keyword">true</span>;</div>
|
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<div class="line"><a name="l00429"></a><span class="lineno"> 429</span>  end = current;</div>
|
|
<div class="line"><a name="l00430"></a><span class="lineno"> 430</span>  current = next_[current];</div>
|
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<div class="line"><a name="l00431"></a><span class="lineno"> 431</span>  }</div>
|
|
<div class="line"><a name="l00432"></a><span class="lineno"> 432</span>  </div>
|
|
<div class="line"><a name="l00433"></a><span class="lineno"> 433</span>  <span class="comment">// Circuit with no distinguished nodes, forbidden.</span></div>
|
|
<div class="line"><a name="l00434"></a><span class="lineno"> 434</span>  <span class="keywordflow">if</span> (start == current && distinguished == -1) {</div>
|
|
<div class="line"><a name="l00435"></a><span class="lineno"> 435</span>  FillFixedPathInReason(start, start, trail_-><a class="code" href="classoperations__research_1_1sat_1_1_trail.html#a84f6b2c778ed597c90f98f0329a25713">MutableConflict</a>());</div>
|
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<div class="line"><a name="l00436"></a><span class="lineno"> 436</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00437"></a><span class="lineno"> 437</span>  }</div>
|
|
<div class="line"><a name="l00438"></a><span class="lineno"> 438</span>  </div>
|
|
<div class="line"><a name="l00439"></a><span class="lineno"> 439</span>  <span class="comment">// Path with no distinguished node: forbid to close it.</span></div>
|
|
<div class="line"><a name="l00440"></a><span class="lineno"> 440</span>  <span class="keywordflow">if</span> (current == -1 && distinguished == -1 &&</div>
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|
<div class="line"><a name="l00441"></a><span class="lineno"> 441</span>  !trail_-><a class="code" href="classoperations__research_1_1sat_1_1_trail.html#a9789bf03dba611e9be5679d6e902d0c8">Assignment</a>().<a class="code" href="classoperations__research_1_1sat_1_1_variables_assignment.html#acfd1646011e643f58fd7dc66d9cc90a5">LiteralIsFalse</a>(graph_[end][start])) {</div>
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|
<div class="line"><a name="l00442"></a><span class="lineno"> 442</span>  <span class="keyword">auto</span>* reason = trail_-><a class="code" href="classoperations__research_1_1sat_1_1_trail.html#a70e532a108e1f03d6f9112c770ffbedb">GetEmptyVectorToStoreReason</a>();</div>
|
|
<div class="line"><a name="l00443"></a><span class="lineno"> 443</span>  FillFixedPathInReason(start, end, reason);</div>
|
|
<div class="line"><a name="l00444"></a><span class="lineno"> 444</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> ok =</div>
|
|
<div class="line"><a name="l00445"></a><span class="lineno"> 445</span>  trail_-><a class="code" href="classoperations__research_1_1sat_1_1_trail.html#aa390738a7cb0521a9c1951f3108c0251">EnqueueWithStoredReason</a>(graph_[end][start].Negated());</div>
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|
<div class="line"><a name="l00446"></a><span class="lineno"> 446</span>  <span class="keywordflow">if</span> (!ok) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00447"></a><span class="lineno"> 447</span>  }</div>
|
|
<div class="line"><a name="l00448"></a><span class="lineno"> 448</span>  }</div>
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<div class="line"><a name="l00449"></a><span class="lineno"> 449</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00450"></a><span class="lineno"> 450</span> }</div>
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<div class="line"><a name="l00451"></a><span class="lineno"> 451</span>  </div>
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<div class="line"><a name="l00452"></a><span class="lineno"><a class="line" href="namespaceoperations__research_1_1sat.html#a505d58583f35441cea048e6a69453099"> 452</a></span> std::function<void(<a class="code" href="classoperations__research_1_1sat_1_1_model.html">Model</a>*)> <a class="code" href="namespaceoperations__research_1_1sat.html#a505d58583f35441cea048e6a69453099">ExactlyOnePerRowAndPerColumn</a>(</div>
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<div class="line"><a name="l00453"></a><span class="lineno"> 453</span>  <span class="keyword">const</span> std::vector<std::vector<Literal>>& graph) {</div>
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<div class="line"><a name="l00454"></a><span class="lineno"> 454</span>  <span class="keywordflow">return</span> [=](<a class="code" href="classoperations__research_1_1sat_1_1_model.html">Model</a>* <a class="code" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>) {</div>
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<div class="line"><a name="l00455"></a><span class="lineno"> 455</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> n = graph.size();</div>
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<div class="line"><a name="l00456"></a><span class="lineno"> 456</span>  std::vector<Literal> exactly_one_constraint;</div>
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<div class="line"><a name="l00457"></a><span class="lineno"> 457</span>  exactly_one_constraint.reserve(n);</div>
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<div class="line"><a name="l00458"></a><span class="lineno"> 458</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">bool</span> transpose : {<span class="keyword">false</span>, <span class="keyword">true</span>}) {</div>
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<div class="line"><a name="l00459"></a><span class="lineno"> 459</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < n; ++i) {</div>
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<div class="line"><a name="l00460"></a><span class="lineno"> 460</span>  exactly_one_constraint.clear();</div>
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<div class="line"><a name="l00461"></a><span class="lineno"> 461</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> j = 0; j < n; ++j) {</div>
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<div class="line"><a name="l00462"></a><span class="lineno"> 462</span>  exactly_one_constraint.push_back(transpose ? graph[j][i]</div>
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<div class="line"><a name="l00463"></a><span class="lineno"> 463</span>  : graph[i][j]);</div>
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<div class="line"><a name="l00464"></a><span class="lineno"> 464</span>  }</div>
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<div class="line"><a name="l00465"></a><span class="lineno"> 465</span>  <a class="code" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->Add(<a class="code" href="namespaceoperations__research_1_1sat.html#a1b1462c55662c1263c0e1f54ed6e06cd">ExactlyOneConstraint</a>(exactly_one_constraint));</div>
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<div class="line"><a name="l00466"></a><span class="lineno"> 466</span>  }</div>
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<div class="line"><a name="l00467"></a><span class="lineno"> 467</span>  }</div>
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<div class="line"><a name="l00468"></a><span class="lineno"> 468</span>  };</div>
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<div class="line"><a name="l00469"></a><span class="lineno"> 469</span> }</div>
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<div class="line"><a name="l00470"></a><span class="lineno"> 470</span>  </div>
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<div class="line"><a name="l00471"></a><span class="lineno"><a class="line" href="namespaceoperations__research_1_1sat.html#a9e1e7aca479b08255d3f796816ec94bc"> 471</a></span> <span class="keywordtype">int</span> <a class="code" href="namespaceoperations__research_1_1sat.html#a9e1e7aca479b08255d3f796816ec94bc">ReindexArcs</a>(std::vector<int>* tails, std::vector<int>* heads,</div>
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<div class="line"><a name="l00472"></a><span class="lineno"> 472</span>  std::vector<Literal>* literals) {</div>
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<div class="line"><a name="l00473"></a><span class="lineno"> 473</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> num_arcs = tails->size();</div>
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<div class="line"><a name="l00474"></a><span class="lineno"> 474</span>  <span class="keywordflow">if</span> (num_arcs == 0) <span class="keywordflow">return</span> 0;</div>
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<div class="line"><a name="l00475"></a><span class="lineno"> 475</span>  </div>
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<div class="line"><a name="l00476"></a><span class="lineno"> 476</span>  <span class="comment">// Put all nodes in a set.</span></div>
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<div class="line"><a name="l00477"></a><span class="lineno"> 477</span>  std::set<int> nodes;</div>
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<div class="line"><a name="l00478"></a><span class="lineno"> 478</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> arc = 0; arc < num_arcs; ++arc) {</div>
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<div class="line"><a name="l00479"></a><span class="lineno"> 479</span>  nodes.insert((*tails)[arc]);</div>
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<div class="line"><a name="l00480"></a><span class="lineno"> 480</span>  nodes.insert((*heads)[arc]);</div>
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<div class="line"><a name="l00481"></a><span class="lineno"> 481</span>  }</div>
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<div class="line"><a name="l00482"></a><span class="lineno"> 482</span>  </div>
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<div class="line"><a name="l00483"></a><span class="lineno"> 483</span>  <span class="comment">// Compute the new indices while keeping a stable order.</span></div>
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<div class="line"><a name="l00484"></a><span class="lineno"> 484</span>  <span class="keywordtype">int</span> new_index = 0;</div>
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<div class="line"><a name="l00485"></a><span class="lineno"> 485</span>  std::vector<int> mapping(*--nodes.end() + 1);</div>
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<div class="line"><a name="l00486"></a><span class="lineno"> 486</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> node : nodes) {</div>
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<div class="line"><a name="l00487"></a><span class="lineno"> 487</span>  mapping[node] = new_index++;</div>
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<div class="line"><a name="l00488"></a><span class="lineno"> 488</span>  }</div>
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<div class="line"><a name="l00489"></a><span class="lineno"> 489</span>  </div>
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<div class="line"><a name="l00490"></a><span class="lineno"> 490</span>  <span class="comment">// Remap the arcs.</span></div>
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<div class="line"><a name="l00491"></a><span class="lineno"> 491</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> arc = 0; arc < num_arcs; ++arc) {</div>
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<div class="line"><a name="l00492"></a><span class="lineno"> 492</span>  (*tails)[arc] = mapping[(*tails)[arc]];</div>
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<div class="line"><a name="l00493"></a><span class="lineno"> 493</span>  (*heads)[arc] = mapping[(*heads)[arc]];</div>
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<div class="line"><a name="l00494"></a><span class="lineno"> 494</span>  }</div>
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<div class="line"><a name="l00495"></a><span class="lineno"> 495</span>  <span class="keywordflow">return</span> nodes.size();</div>
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<div class="line"><a name="l00496"></a><span class="lineno"> 496</span> }</div>
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<div class="line"><a name="l00497"></a><span class="lineno"> 497</span>  </div>
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<div class="line"><a name="l00498"></a><span class="lineno"><a class="line" href="namespaceoperations__research_1_1sat.html#a3c25e2ace66c05a1078d9d8128ca33c3"> 498</a></span> std::function<void(<a class="code" href="classoperations__research_1_1sat_1_1_model.html">Model</a>*)> <a class="code" href="namespaceoperations__research_1_1sat.html#a3c25e2ace66c05a1078d9d8128ca33c3">SubcircuitConstraint</a>(</div>
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<div class="line"><a name="l00499"></a><span class="lineno"> 499</span>  <span class="keywordtype">int</span> num_nodes, <span class="keyword">const</span> std::vector<int>& tails, <span class="keyword">const</span> std::vector<int>& heads,</div>
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<div class="line"><a name="l00500"></a><span class="lineno"> 500</span>  <span class="keyword">const</span> std::vector<Literal>& literals,</div>
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<div class="line"><a name="l00501"></a><span class="lineno"> 501</span>  <span class="keywordtype">bool</span> multiple_subcircuit_through_zero) {</div>
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<div class="line"><a name="l00502"></a><span class="lineno"> 502</span>  <span class="keywordflow">return</span> [=](<a class="code" href="classoperations__research_1_1sat_1_1_model.html">Model</a>* <a class="code" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>) {</div>
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<div class="line"><a name="l00503"></a><span class="lineno"> 503</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> num_arcs = tails.size();</div>
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<div class="line"><a name="l00504"></a><span class="lineno"> 504</span>  CHECK_GT(num_arcs, 0);</div>
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<div class="line"><a name="l00505"></a><span class="lineno"> 505</span>  CHECK_EQ(heads.size(), num_arcs);</div>
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<div class="line"><a name="l00506"></a><span class="lineno"> 506</span>  CHECK_EQ(literals.size(), num_arcs);</div>
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<div class="line"><a name="l00507"></a><span class="lineno"> 507</span>  </div>
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<div class="line"><a name="l00508"></a><span class="lineno"> 508</span>  <span class="comment">// If a node has no outgoing or no incoming arc, the model will be unsat</span></div>
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<div class="line"><a name="l00509"></a><span class="lineno"> 509</span>  <span class="comment">// as soon as we add the corresponding ExactlyOneConstraint().</span></div>
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<div class="line"><a name="l00510"></a><span class="lineno"> 510</span>  <span class="keyword">auto</span> sat_solver = <a class="code" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->GetOrCreate<<a class="code" href="classoperations__research_1_1sat_1_1_sat_solver.html">SatSolver</a>>();</div>
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<div class="line"><a name="l00511"></a><span class="lineno"> 511</span>  </div>
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<div class="line"><a name="l00512"></a><span class="lineno"> 512</span>  std::vector<std::vector<Literal>> exactly_one_incoming(num_nodes);</div>
|
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<div class="line"><a name="l00513"></a><span class="lineno"> 513</span>  std::vector<std::vector<Literal>> exactly_one_outgoing(num_nodes);</div>
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<div class="line"><a name="l00514"></a><span class="lineno"> 514</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> arc = 0; arc < num_arcs; arc++) {</div>
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<div class="line"><a name="l00515"></a><span class="lineno"> 515</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="routing__flow_8cc.html#a10b672faee4b99c6a02feb0e343f3b0f">tail</a> = tails[arc];</div>
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<div class="line"><a name="l00516"></a><span class="lineno"> 516</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="routing__flow_8cc.html#ac891d9f514e55ec8ee1212757a147888">head</a> = heads[arc];</div>
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<div class="line"><a name="l00517"></a><span class="lineno"> 517</span>  exactly_one_outgoing[<a class="code" href="routing__flow_8cc.html#a10b672faee4b99c6a02feb0e343f3b0f">tail</a>].push_back(literals[arc]);</div>
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<div class="line"><a name="l00518"></a><span class="lineno"> 518</span>  exactly_one_incoming[<a class="code" href="routing__flow_8cc.html#ac891d9f514e55ec8ee1212757a147888">head</a>].push_back(literals[arc]);</div>
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<div class="line"><a name="l00519"></a><span class="lineno"> 519</span>  }</div>
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<div class="line"><a name="l00520"></a><span class="lineno"> 520</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < exactly_one_incoming.size(); ++i) {</div>
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<div class="line"><a name="l00521"></a><span class="lineno"> 521</span>  <span class="keywordflow">if</span> (i == 0 && multiple_subcircuit_through_zero) <span class="keywordflow">continue</span>;</div>
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<div class="line"><a name="l00522"></a><span class="lineno"> 522</span>  <a class="code" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->Add(<a class="code" href="namespaceoperations__research_1_1sat.html#a1b1462c55662c1263c0e1f54ed6e06cd">ExactlyOneConstraint</a>(exactly_one_incoming[i]));</div>
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<div class="line"><a name="l00523"></a><span class="lineno"> 523</span>  <span class="keywordflow">if</span> (sat_solver->IsModelUnsat()) <span class="keywordflow">return</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="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < exactly_one_outgoing.size(); ++i) {</div>
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<div class="line"><a name="l00526"></a><span class="lineno"> 526</span>  <span class="keywordflow">if</span> (i == 0 && multiple_subcircuit_through_zero) <span class="keywordflow">continue</span>;</div>
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<div class="line"><a name="l00527"></a><span class="lineno"> 527</span>  <a class="code" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->Add(<a class="code" href="namespaceoperations__research_1_1sat.html#a1b1462c55662c1263c0e1f54ed6e06cd">ExactlyOneConstraint</a>(exactly_one_outgoing[i]));</div>
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<div class="line"><a name="l00528"></a><span class="lineno"> 528</span>  <span class="keywordflow">if</span> (sat_solver->IsModelUnsat()) <span class="keywordflow">return</span>;</div>
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<div class="line"><a name="l00529"></a><span class="lineno"> 529</span>  }</div>
|
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<div class="line"><a name="l00530"></a><span class="lineno"> 530</span>  </div>
|
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<div class="line"><a name="l00531"></a><span class="lineno"> 531</span>  <a class="code" href="structoperations__research_1_1sat_1_1_circuit_propagator_1_1_options.html">CircuitPropagator::Options</a> options;</div>
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<div class="line"><a name="l00532"></a><span class="lineno"> 532</span>  options.<a class="code" href="structoperations__research_1_1sat_1_1_circuit_propagator_1_1_options.html#af1123baeaa5412b68d37d8adf43ccb7c">multiple_subcircuit_through_zero</a> = multiple_subcircuit_through_zero;</div>
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<div class="line"><a name="l00533"></a><span class="lineno"> 533</span>  <a class="code" href="classoperations__research_1_1sat_1_1_circuit_propagator.html">CircuitPropagator</a>* constraint = <span class="keyword">new</span> <a class="code" href="classoperations__research_1_1sat_1_1_circuit_propagator.html">CircuitPropagator</a>(</div>
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<div class="line"><a name="l00534"></a><span class="lineno"> 534</span>  num_nodes, tails, heads, literals, options, <a class="code" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>);</div>
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<div class="line"><a name="l00535"></a><span class="lineno"> 535</span>  constraint-><a class="code" href="classoperations__research_1_1sat_1_1_circuit_propagator.html#a6ee8ed57254aec3ae99d399bae5b3736">RegisterWith</a>(<a class="code" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->GetOrCreate<<a class="code" href="classoperations__research_1_1sat_1_1_generic_literal_watcher.html">GenericLiteralWatcher</a>>());</div>
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<div class="line"><a name="l00536"></a><span class="lineno"> 536</span>  <a class="code" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->TakeOwnership(constraint);</div>
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<div class="line"><a name="l00537"></a><span class="lineno"> 537</span>  };</div>
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<div class="line"><a name="l00538"></a><span class="lineno"> 538</span> }</div>
|
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<div class="line"><a name="l00539"></a><span class="lineno"> 539</span>  </div>
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<div class="line"><a name="l00540"></a><span class="lineno"><a class="line" href="namespaceoperations__research_1_1sat.html#a42094dcdae62a62bd5d269e1223f7f30"> 540</a></span> std::function<void(<a class="code" href="classoperations__research_1_1sat_1_1_model.html">Model</a>*)> <a class="code" href="namespaceoperations__research_1_1sat.html#a42094dcdae62a62bd5d269e1223f7f30">CircuitCovering</a>(</div>
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<div class="line"><a name="l00541"></a><span class="lineno"> 541</span>  <span class="keyword">const</span> std::vector<std::vector<Literal>>& graph,</div>
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<div class="line"><a name="l00542"></a><span class="lineno"> 542</span>  <span class="keyword">const</span> std::vector<int>& distinguished_nodes) {</div>
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<div class="line"><a name="l00543"></a><span class="lineno"> 543</span>  <span class="keywordflow">return</span> [=](<a class="code" href="classoperations__research_1_1sat_1_1_model.html">Model</a>* <a class="code" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>) {</div>
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<div class="line"><a name="l00544"></a><span class="lineno"> 544</span>  <a class="code" href="classoperations__research_1_1sat_1_1_circuit_covering_propagator.html">CircuitCoveringPropagator</a>* constraint =</div>
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<div class="line"><a name="l00545"></a><span class="lineno"> 545</span>  <span class="keyword">new</span> <a class="code" href="classoperations__research_1_1sat_1_1_circuit_covering_propagator.html">CircuitCoveringPropagator</a>(graph, distinguished_nodes, <a class="code" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>);</div>
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<div class="line"><a name="l00546"></a><span class="lineno"> 546</span>  constraint-><a class="code" href="classoperations__research_1_1sat_1_1_circuit_covering_propagator.html#a6ee8ed57254aec3ae99d399bae5b3736">RegisterWith</a>(<a class="code" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->GetOrCreate<<a class="code" href="classoperations__research_1_1sat_1_1_generic_literal_watcher.html">GenericLiteralWatcher</a>>());</div>
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<div class="line"><a name="l00547"></a><span class="lineno"> 547</span>  <a class="code" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->TakeOwnership(constraint);</div>
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<div class="line"><a name="l00548"></a><span class="lineno"> 548</span>  };</div>
|
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<div class="line"><a name="l00549"></a><span class="lineno"> 549</span> }</div>
|
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<div class="line"><a name="l00550"></a><span class="lineno"> 550</span>  </div>
|
|
<div class="line"><a name="l00551"></a><span class="lineno"> 551</span> } <span class="comment">// namespace sat</span></div>
|
|
<div class="line"><a name="l00552"></a><span class="lineno"> 552</span> } <span class="comment">// namespace operations_research</span></div>
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</div><!-- fragment --></div><!-- contents -->
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</div><!-- doc-content -->
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<div class="ttc" id="arouting__flow_8cc_html_a10b672faee4b99c6a02feb0e343f3b0f"><div class="ttname"><a href="routing__flow_8cc.html#a10b672faee4b99c6a02feb0e343f3b0f">tail</a></div><div class="ttdeci">int64 tail</div><div class="ttdef"><b>Definition:</b> <a href="routing__flow_8cc_source.html#l00127">routing_flow.cc:127</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_generic_literal_watcher_html_adeee4ac52bfe0f1b48ee8958bb88b4e3"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_generic_literal_watcher.html#adeee4ac52bfe0f1b48ee8958bb88b4e3">operations_research::sat::GenericLiteralWatcher::Register</a></div><div class="ttdeci">int Register(PropagatorInterface *propagator)</div><div class="ttdef"><b>Definition:</b> <a href="integer_8cc_source.html#l01897">integer.cc:1897</a></div></div>
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<div class="ttc" id="amap__util_8h_html"><div class="ttname"><a href="map__util_8h.html">map_util.h</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_html_a6894cc7d30a41a5e750f40a7f4751c01"><div class="ttname"><a href="namespaceoperations__research.html#a6894cc7d30a41a5e750f40a7f4751c01">operations_research::Arc</a></div><div class="ttdeci">std::pair< int64, int64 > Arc</div><div class="ttdef"><b>Definition:</b> <a href="search_8cc_source.html#l03355">search.cc:3355</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="aclassoperations__research_1_1sat_1_1_circuit_covering_propagator_html_a176d2c659864433ccd869b5fba8d57af"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_circuit_covering_propagator.html#a176d2c659864433ccd869b5fba8d57af">operations_research::sat::CircuitCoveringPropagator::SetLevel</a></div><div class="ttdeci">void SetLevel(int level) final</div><div class="ttdef"><b>Definition:</b> <a href="circuit_8cc_source.html#l00340">circuit.cc:340</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_generic_literal_watcher_html_a8b8fcdc97976ca46ea04a03fd874d9b3"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_generic_literal_watcher.html#a8b8fcdc97976ca46ea04a03fd874d9b3">operations_research::sat::GenericLiteralWatcher::RegisterReversibleClass</a></div><div class="ttdeci">void RegisterReversibleClass(int id, ReversibleInterface *rev)</div><div class="ttdef"><b>Definition:</b> <a href="integer_8cc_source.html#l01936">integer.cc:1936</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_sat_solver_html"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_sat_solver.html">operations_research::sat::SatSolver</a></div><div class="ttdef"><b>Definition:</b> <a href="sat__solver_8h_source.html#l00058">sat_solver.h:58</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_generic_literal_watcher_html_a8963fd33e7bd70e749b2a37060ef1274"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_generic_literal_watcher.html#a8963fd33e7bd70e749b2a37060ef1274">operations_research::sat::GenericLiteralWatcher::RegisterReversibleInt</a></div><div class="ttdeci">void RegisterReversibleInt(int id, int *rev)</div><div class="ttdef"><b>Definition:</b> <a href="integer_8cc_source.html#l01941">integer.cc:1941</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_a505d58583f35441cea048e6a69453099"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#a505d58583f35441cea048e6a69453099">operations_research::sat::ExactlyOnePerRowAndPerColumn</a></div><div class="ttdeci">std::function< void(Model *)> ExactlyOnePerRowAndPerColumn(const std::vector< std::vector< Literal >> &graph)</div><div class="ttdef"><b>Definition:</b> <a href="circuit_8cc_source.html#l00452">circuit.cc:452</a></div></div>
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<div class="ttc" id="anamespacegtl_html_abc18f60961e36340e64e428827c0e38e"><div class="ttname"><a href="namespacegtl.html#abc18f60961e36340e64e428827c0e38e">gtl::FindWithDefault</a></div><div class="ttdeci">const Collection::value_type::second_type & FindWithDefault(const Collection &collection, const typename Collection::value_type::first_type &key, const typename Collection::value_type::second_type &value)</div><div class="ttdef"><b>Definition:</b> <a href="map__util_8h_source.html#l00026">map_util.h:26</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="anamespaceoperations__research_1_1sat_html_a1b1462c55662c1263c0e1f54ed6e06cd"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#a1b1462c55662c1263c0e1f54ed6e06cd">operations_research::sat::ExactlyOneConstraint</a></div><div class="ttdeci">std::function< void(Model *)> ExactlyOneConstraint(const std::vector< Literal > &literals)</div><div class="ttdef"><b>Definition:</b> <a href="sat__solver_8h_source.html#l00865">sat_solver.h:865</a></div></div>
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<div class="ttc" id="acircuit_8h_html"><div class="ttname"><a href="circuit_8h.html">circuit.h</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_circuit_propagator_html_a45321337f970685d9847db005c4b3de1"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_circuit_propagator.html#a45321337f970685d9847db005c4b3de1">operations_research::sat::CircuitPropagator::IncrementalPropagate</a></div><div class="ttdeci">bool IncrementalPropagate(const std::vector< int > &watch_indices) final</div><div class="ttdef"><b>Definition:</b> <a href="circuit_8cc_source.html#l00153">circuit.cc:153</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="anamespaceoperations__research_1_1sat_html_a9e1e7aca479b08255d3f796816ec94bc"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#a9e1e7aca479b08255d3f796816ec94bc">operations_research::sat::ReindexArcs</a></div><div class="ttdeci">int ReindexArcs(std::vector< int > *tails, std::vector< int > *heads, std::vector< Literal > *literals)</div><div class="ttdef"><b>Definition:</b> <a href="circuit_8cc_source.html#l00471">circuit.cc:471</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_circuit_covering_propagator_html_a154741eb694fbdb51b431c9c0d404496"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_circuit_covering_propagator.html#a154741eb694fbdb51b431c9c0d404496">operations_research::sat::CircuitCoveringPropagator::CircuitCoveringPropagator</a></div><div class="ttdeci">CircuitCoveringPropagator(std::vector< std::vector< Literal >> graph, const std::vector< int > &distinguished_nodes, Model *model)</div><div class="ttdef"><b>Definition:</b> <a href="circuit_8cc_source.html#l00308">circuit.cc:308</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="asat__solver_8h_html"><div class="ttname"><a href="sat__solver_8h.html">sat_solver.h</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_circuit_propagator_html"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_circuit_propagator.html">operations_research::sat::CircuitPropagator</a></div><div class="ttdef"><b>Definition:</b> <a href="circuit_8h_source.html#l00044">circuit.h:44</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_generic_literal_watcher_html"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_generic_literal_watcher.html">operations_research::sat::GenericLiteralWatcher</a></div><div class="ttdef"><b>Definition:</b> <a href="integer_8h_source.html#l01067">integer.h:1067</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_a3c25e2ace66c05a1078d9d8128ca33c3"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#a3c25e2ace66c05a1078d9d8128ca33c3">operations_research::sat::SubcircuitConstraint</a></div><div class="ttdeci">std::function< void(Model *)> SubcircuitConstraint(int num_nodes, const std::vector< int > &tails, const std::vector< int > &heads, const std::vector< Literal > &literals, bool multiple_subcircuit_through_zero)</div><div class="ttdef"><b>Definition:</b> <a href="circuit_8cc_source.html#l00498">circuit.cc:498</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_circuit_propagator_html_a6ee8ed57254aec3ae99d399bae5b3736"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_circuit_propagator.html#a6ee8ed57254aec3ae99d399bae5b3736">operations_research::sat::CircuitPropagator::RegisterWith</a></div><div class="ttdeci">void RegisterWith(GenericLiteralWatcher *watcher)</div><div class="ttdef"><b>Definition:</b> <a href="circuit_8cc_source.html#l00092">circuit.cc:92</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_generic_literal_watcher_html_aef66ce77e5b87afecf1c5696f44d4d1c"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_generic_literal_watcher.html#aef66ce77e5b87afecf1c5696f44d4d1c">operations_research::sat::GenericLiteralWatcher::NotifyThatPropagatorMayNotReachFixedPointInOnePass</a></div><div class="ttdeci">void NotifyThatPropagatorMayNotReachFixedPointInOnePass(int id)</div><div class="ttdef"><b>Definition:</b> <a href="integer_8cc_source.html#l01927">integer.cc:1927</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_trail_html_a9789bf03dba611e9be5679d6e902d0c8"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_trail.html#a9789bf03dba611e9be5679d6e902d0c8">operations_research::sat::Trail::Assignment</a></div><div class="ttdeci">const VariablesAssignment & Assignment() const</div><div class="ttdef"><b>Definition:</b> <a href="sat__base_8h_source.html#l00380">sat_base.h:380</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_a969b5056550d96847f8c35f19fd17f50"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#a969b5056550d96847f8c35f19fd17f50">operations_research::sat::kFalseLiteralIndex</a></div><div class="ttdeci">const LiteralIndex kFalseLiteralIndex(-3)</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_trail_html_a4086a48ef9859b6ed0a5e9dd08d622c7"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_trail.html#a4086a48ef9859b6ed0a5e9dd08d622c7">operations_research::sat::Trail::EnqueueWithSameReasonAs</a></div><div class="ttdeci">void EnqueueWithSameReasonAs(Literal true_literal, BooleanVariable reference_var)</div><div class="ttdef"><b>Definition:</b> <a href="sat__base_8h_source.html#l00272">sat_base.h:272</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_model_html"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_model.html">operations_research::sat::Model</a></div><div class="ttdoc">Class that owns everything related to a particular optimization model.</div><div class="ttdef"><b>Definition:</b> <a href="sat_2model_8h_source.html#l00038">sat/model.h:38</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_circuit_covering_propagator_html_ac1fe9b1f2b978c4283e42f12e586eb1e"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_circuit_covering_propagator.html#ac1fe9b1f2b978c4283e42f12e586eb1e">operations_research::sat::CircuitCoveringPropagator::Propagate</a></div><div class="ttdeci">bool Propagate() final</div><div class="ttdef"><b>Definition:</b> <a href="circuit_8cc_source.html#l00374">circuit.cc:374</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_a42094dcdae62a62bd5d269e1223f7f30"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#a42094dcdae62a62bd5d269e1223f7f30">operations_research::sat::CircuitCovering</a></div><div class="ttdeci">std::function< void(Model *)> CircuitCovering(const std::vector< std::vector< Literal >> &graph, const std::vector< int > &distinguished_nodes)</div><div class="ttdef"><b>Definition:</b> <a href="circuit_8cc_source.html#l00540">circuit.cc:540</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_add67896a84f6372a648154c5770a0ae0"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#add67896a84f6372a648154c5770a0ae0">operations_research::sat::kNoBooleanVariable</a></div><div class="ttdeci">const BooleanVariable kNoBooleanVariable(-1)</div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_circuit_covering_propagator_html"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_circuit_covering_propagator.html">operations_research::sat::CircuitCoveringPropagator</a></div><div class="ttdef"><b>Definition:</b> <a href="circuit_8h_source.html#l00131">circuit.h:131</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_trail_html_a84f6b2c778ed597c90f98f0329a25713"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_trail.html#a84f6b2c778ed597c90f98f0329a25713">operations_research::sat::Trail::MutableConflict</a></div><div class="ttdeci">std::vector< Literal > * MutableConflict()</div><div class="ttdef"><b>Definition:</b> <a href="sat__base_8h_source.html#l00361">sat_base.h:361</a></div></div>
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<div class="ttc" id="agurobi__interface_8cc_html_a0728f23c9a47655d38e0bf1a2f200bcf"><div class="ttname"><a href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a></div><div class="ttdeci">GRBmodel * model</div><div class="ttdef"><b>Definition:</b> <a href="gurobi__interface_8cc_source.html#l00195">gurobi_interface.cc:195</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_circuit_propagator_html_a176d2c659864433ccd869b5fba8d57af"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_circuit_propagator.html#a176d2c659864433ccd869b5fba8d57af">operations_research::sat::CircuitPropagator::SetLevel</a></div><div class="ttdeci">void SetLevel(int level) final</div><div class="ttdef"><b>Definition:</b> <a href="circuit_8cc_source.html#l00108">circuit.cc:108</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_generic_literal_watcher_html_a8f6dd74a841475ccb390614d2b212170"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_generic_literal_watcher.html#a8f6dd74a841475ccb390614d2b212170">operations_research::sat::GenericLiteralWatcher::WatchLiteral</a></div><div class="ttdeci">void WatchLiteral(Literal l, int id, int watch_index=-1)</div><div class="ttdef"><b>Definition:</b> <a href="integer_8h_source.html#l01293">integer.h:1293</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_circuit_covering_propagator_html_a6ee8ed57254aec3ae99d399bae5b3736"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_circuit_covering_propagator.html#a6ee8ed57254aec3ae99d399bae5b3736">operations_research::sat::CircuitCoveringPropagator::RegisterWith</a></div><div class="ttdeci">void RegisterWith(GenericLiteralWatcher *watcher)</div><div class="ttdef"><b>Definition:</b> <a href="circuit_8cc_source.html#l00320">circuit.cc:320</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_circuit_propagator_1_1_options_html_af1123baeaa5412b68d37d8adf43ccb7c"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_circuit_propagator_1_1_options.html#af1123baeaa5412b68d37d8adf43ccb7c">operations_research::sat::CircuitPropagator::Options::multiple_subcircuit_through_zero</a></div><div class="ttdeci">bool multiple_subcircuit_through_zero</div><div class="ttdef"><b>Definition:</b> <a href="circuit_8h_source.html#l00049">circuit.h:49</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_trail_html_aa390738a7cb0521a9c1951f3108c0251"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_trail.html#aa390738a7cb0521a9c1951f3108c0251">operations_research::sat::Trail::EnqueueWithStoredReason</a></div><div class="ttdeci">ABSL_MUST_USE_RESULT bool EnqueueWithStoredReason(Literal true_literal)</div><div class="ttdef"><b>Definition:</b> <a href="sat__base_8h_source.html#l00284">sat_base.h:284</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_circuit_propagator_html_ab724d1b4067da7ec830cb4d1b8284ee7"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_circuit_propagator.html#ab724d1b4067da7ec830cb4d1b8284ee7">operations_research::sat::CircuitPropagator::CircuitPropagator</a></div><div class="ttdeci">CircuitPropagator(int num_nodes, const std::vector< int > &tails, const std::vector< int > &heads, const std::vector< Literal > &literals, Options options, Model *model)</div><div class="ttdef"><b>Definition:</b> <a href="circuit_8cc_source.html#l00025">circuit.cc:25</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_circuit_propagator_1_1_options_html"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_circuit_propagator_1_1_options.html">operations_research::sat::CircuitPropagator::Options</a></div><div class="ttdef"><b>Definition:</b> <a href="circuit_8h_source.html#l00046">circuit.h:46</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_circuit_propagator_html_ac1fe9b1f2b978c4283e42f12e586eb1e"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_circuit_propagator.html#ac1fe9b1f2b978c4283e42f12e586eb1e">operations_research::sat::CircuitPropagator::Propagate</a></div><div class="ttdeci">bool Propagate() final</div><div class="ttdef"><b>Definition:</b> <a href="circuit_8cc_source.html#l00197">circuit.cc:197</a></div></div>
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<div class="ttc" id="arouting__flow_8cc_html_ac891d9f514e55ec8ee1212757a147888"><div class="ttname"><a href="routing__flow_8cc.html#ac891d9f514e55ec8ee1212757a147888">head</a></div><div class="ttdeci">int64 head</div><div class="ttdef"><b>Definition:</b> <a href="routing__flow_8cc_source.html#l00128">routing_flow.cc:128</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="aclassoperations__research_1_1sat_1_1_integer_encoder_html_a299520ab923d28b4ee3051fe476d69fe"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_integer_encoder.html#a299520ab923d28b4ee3051fe476d69fe">operations_research::sat::IntegerEncoder::GetFalseLiteral</a></div><div class="ttdeci">Literal GetFalseLiteral()</div><div class="ttdef"><b>Definition:</b> <a href="integer_8h_source.html#l00438">integer.h:438</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_circuit_covering_propagator_html_a45321337f970685d9847db005c4b3de1"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_circuit_covering_propagator.html#a45321337f970685d9847db005c4b3de1">operations_research::sat::CircuitCoveringPropagator::IncrementalPropagate</a></div><div class="ttdeci">bool IncrementalPropagate(const std::vector< int > &watch_indices) final</div><div class="ttdef"><b>Definition:</b> <a href="circuit_8cc_source.html#l00353">circuit.cc:353</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_integer_encoder_html"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_integer_encoder.html">operations_research::sat::IntegerEncoder</a></div><div class="ttdef"><b>Definition:</b> <a href="integer_8h_source.html#l00267">integer.h:267</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="aclassoperations__research_1_1sat_1_1_trail_html"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_trail.html">operations_research::sat::Trail</a></div><div class="ttdef"><b>Definition:</b> <a href="sat__base_8h_source.html#l00233">sat_base.h:233</a></div></div>
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