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<div class="title">cp_model_lns.cc</div> </div>
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<a href="cp__model__lns_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="cp__model__lns_8h.html">ortools/sat/cp_model_lns.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 <limits></span></div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#include <numeric></span></div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor">#include <vector></span></div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</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="cp__model_8pb_8h.html">ortools/sat/cp_model.pb.h</a>"</span></div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#include "<a class="code" href="cp__model__loader_8h.html">ortools/sat/cp_model_loader.h</a>"</span></div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#include "<a class="code" href="cp__model__utils_8h.html">ortools/sat/cp_model_utils.h</a>"</span></div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include "<a class="code" href="integer_8h.html">ortools/sat/integer.h</a>"</span></div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include "<a class="code" href="linear__programming__constraint_8h.html">ortools/sat/linear_programming_constraint.h</a>"</span></div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include "<a class="code" href="rins_8h.html">ortools/sat/rins.h</a>"</span></div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#include "<a class="code" href="synchronization_8h.html">ortools/sat/synchronization.h</a>"</span></div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#include "<a class="code" href="saturated__arithmetic_8h.html">ortools/util/saturated_arithmetic.h</a>"</span></div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  </div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</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="l00030"></a><span class="lineno"> 30</span> <span class="keyword">namespace </span>sat {</div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  </div>
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<div class="line"><a name="l00032"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a08c018489eb0c4c309f144780ebb8cce"> 32</a></span> <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a08c018489eb0c4c309f144780ebb8cce">NeighborhoodGeneratorHelper::NeighborhoodGeneratorHelper</a>(</div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  CpModelProto <span class="keyword">const</span>* <a class="code" href="cp__model__solver_8cc.html#a6ac76d8a372013f67c4973012948ec84">model_proto</a>, SatParameters <span class="keyword">const</span>* <a class="code" href="cp__model__fz__solver_8cc.html#a10a1eab179b472c030bdc2a2efef7219">parameters</a>,</div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  <a class="code" href="classoperations__research_1_1sat_1_1_shared_response_manager.html">SharedResponseManager</a>* shared_response, <a class="code" href="classoperations__research_1_1_shared_time_limit.html">SharedTimeLimit</a>* shared_time_limit,</div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <a class="code" href="classoperations__research_1_1sat_1_1_shared_bounds_manager.html">SharedBoundsManager</a>* shared_bounds)</div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  : <a class="code" href="classoperations__research_1_1sat_1_1_sub_solver.html">SubSolver</a>(<span class="stringliteral">""</span>),</div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  parameters_(*<a class="code" href="cp__model__fz__solver_8cc.html#a10a1eab179b472c030bdc2a2efef7219">parameters</a>),</div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  model_proto_(*<a class="code" href="cp__model__solver_8cc.html#a6ac76d8a372013f67c4973012948ec84">model_proto</a>),</div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  shared_time_limit_(shared_time_limit),</div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  shared_bounds_(shared_bounds),</div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  shared_response_(shared_response) {</div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(shared_response_ != <span class="keyword">nullptr</span>);</div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="keywordflow">if</span> (shared_bounds_ != <span class="keyword">nullptr</span>) {</div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  shared_bounds_id_ = shared_bounds_-><a class="code" href="classoperations__research_1_1sat_1_1_shared_bounds_manager.html#af90af356f66a9a677d8d76be3fdd7356">RegisterNewId</a>();</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  }</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  *model_proto_with_only_variables_.mutable_variables() =</div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  model_proto_.variables();</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  RecomputeHelperData();</div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#afa21407ae134806ac4337d0b2473b210">Synchronize</a>();</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>  </div>
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<div class="line"><a name="l00052"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#afa21407ae134806ac4337d0b2473b210"> 52</a></span> <span class="keywordtype">void</span> <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#afa21407ae134806ac4337d0b2473b210">NeighborhoodGeneratorHelper::Synchronize</a>() {</div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  absl::MutexLock mutex_lock(&mutex_);</div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keywordflow">if</span> (shared_bounds_ != <span class="keyword">nullptr</span>) {</div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  std::vector<int> model_variables;</div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  std::vector<int64> new_lower_bounds;</div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  std::vector<int64> new_upper_bounds;</div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  shared_bounds_-><a class="code" href="classoperations__research_1_1sat_1_1_shared_bounds_manager.html#a7aa28ef33d58d24db19943fb77fcecbd">GetChangedBounds</a>(shared_bounds_id_, &model_variables,</div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  &new_lower_bounds, &new_upper_bounds);</div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  </div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < model_variables.size(); ++i) {</div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> = model_variables[i];</div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keyword">const</span> <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> new_lb = new_lower_bounds[i];</div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keyword">const</span> <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> new_ub = new_upper_bounds[i];</div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keywordflow">if</span> (<a class="code" href="vlog__is__on_8h.html#a956152cad330225654d128f35c00efce">VLOG_IS_ON</a>(3)) {</div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keyword">const</span> <span class="keyword">auto</span>& domain =</div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  model_proto_with_only_variables_.variables(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>).domain();</div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keyword">const</span> <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> old_lb = domain.Get(0);</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="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> old_ub = domain.Get(domain.size() - 1);</div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <a class="code" href="base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927">VLOG</a>(3) << <span class="stringliteral">"Variable: "</span> << <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> << <span class="stringliteral">" old domain: ["</span> << old_lb << <span class="stringliteral">", "</span></div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  << old_ub << <span class="stringliteral">"] new domain: ["</span> << new_lb << <span class="stringliteral">", "</span> << new_ub</div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  << <span class="stringliteral">"]"</span>;</div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  }</div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="keyword">const</span> <a class="code" href="classoperations__research_1_1_domain.html">Domain</a> old_domain =</div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <a class="code" href="namespaceoperations__research_1_1sat.html#ab1240060466ba48a36a4b36379bce26a">ReadDomainFromProto</a>(model_proto_with_only_variables_.variables(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>));</div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keyword">const</span> <a class="code" href="classoperations__research_1_1_domain.html">Domain</a> new_domain =</div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  old_domain.<a class="code" href="classoperations__research_1_1_domain.html#a835826c4c5129b74553042a357a721ff">IntersectionWith</a>(<a class="code" href="classoperations__research_1_1_domain.html">Domain</a>(new_lb, new_ub));</div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keywordflow">if</span> (new_domain.<a class="code" href="classoperations__research_1_1_domain.html#a8e12342fc420701fbffd97025421575a">IsEmpty</a>()) {</div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="comment">// This can mean two things:</span></div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="comment">// 1/ This variable is a normal one and the problem is UNSAT or</span></div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="comment">// 2/ This variable is optional, and its associated literal must be</span></div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="comment">// set to false.</span></div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="comment">//</span></div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="comment">// Currently, we wait for any full solver to pick the crossing bounds</span></div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="comment">// and do the correct stuff on their own. We do not want to have empty</span></div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="comment">// domain in the proto as this would means INFEASIBLE. So we just ignore</span></div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="comment">// such bounds here.</span></div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="comment">//</span></div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="comment">// TODO(user): We could set the optional literal to false directly in</span></div>
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|
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="comment">// the bound sharing manager. We do have to be careful that all the</span></div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="comment">// different solvers have the same optionality definition though.</span></div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keywordflow">continue</span>;</div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  }</div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <a class="code" href="namespaceoperations__research_1_1sat.html#a901c19b12842f8af153e588a689a90b5">FillDomainInProto</a>(</div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  new_domain, model_proto_with_only_variables_.mutable_variables(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>));</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>  </div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="comment">// Only trigger the computation if needed.</span></div>
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<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keywordflow">if</span> (!model_variables.empty()) {</div>
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<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  RecomputeHelperData();</div>
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<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  }</div>
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  }</div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> }</div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  </div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</span> <span class="keywordtype">void</span> NeighborhoodGeneratorHelper::RecomputeHelperData() {</div>
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<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="comment">// Recompute all the data in case new variables have been fixed.</span></div>
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<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="comment">//</span></div>
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<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="comment">// TODO(user): Ideally we should ignore trivially true/false constraint, but</span></div>
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="comment">// this will duplicate already existing code :-( we should probably still do</span></div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="comment">// at least enforcement literal and clauses? We could maybe run a light</span></div>
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<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="comment">// presolve?</span></div>
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<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  var_to_constraint_.assign(model_proto_.variables_size(), {});</div>
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<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  constraint_to_var_.assign(model_proto_.constraints_size(), {});</div>
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<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keyword">const</span> <span class="keyword">auto</span> register_var = [&](<span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, <span class="keywordtype">int</span> ct_index) {</div>
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<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <a class="code" href="base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006">DCHECK</a>(<a class="code" href="namespaceoperations__research_1_1sat.html#a217338425de4389014563f1f24331713">RefIsPositive</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>));</div>
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<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keywordflow">if</span> (IsConstant(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>)) <span class="keywordflow">return</span>;</div>
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<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  var_to_constraint_[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>].push_back(ct_index);</div>
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<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  constraint_to_var_[ct_index].push_back(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div>
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<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <a class="code" href="base_2logging_8h.html#a7cc25402ecd7591b4c39934dd656b1f9">CHECK_GE</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, 0);</div>
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<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <a class="code" href="base_2logging_8h.html#a4bd2e815ca2f702a4b6aa744b1ff3b82">CHECK_LT</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, model_proto_.variables_size());</div>
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<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  };</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>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> ct_index = 0; ct_index < model_proto_.constraints_size();</div>
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<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  ++ct_index) {</div>
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<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> : <a class="code" href="namespaceoperations__research_1_1sat.html#a1d467595ed8fe5b85dc95328ee1c2770">UsedVariables</a>(model_proto_.constraints(ct_index))) {</div>
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<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  register_var(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, ct_index);</div>
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<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  }</div>
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<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  </div>
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<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  <span class="comment">// We replace intervals by their underlying integer variables.</span></div>
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<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <span class="keywordflow">if</span> (parameters_.lns_expand_intervals_in_constraint_graph()) {</div>
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<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="resource_8cc.html#af92a8383a05fdf586a52263d358f5ada">interval</a> :</div>
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<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <a class="code" href="namespaceoperations__research_1_1sat.html#a217ba4c51953c701a68d6572d79801f1">UsedIntervals</a>(model_proto_.constraints(ct_index))) {</div>
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<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> :</div>
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<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  <a class="code" href="namespaceoperations__research_1_1sat.html#a1d467595ed8fe5b85dc95328ee1c2770">UsedVariables</a>(model_proto_.constraints(<a class="code" href="resource_8cc.html#af92a8383a05fdf586a52263d358f5ada">interval</a>))) {</div>
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<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  register_var(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, ct_index);</div>
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<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  }</div>
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<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  }</div>
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<div class="line"><a name="l00138"></a><span class="lineno"> 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>  type_to_constraints_.clear();</div>
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<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> num_constraints = model_proto_.constraints_size();</div>
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<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> c = 0; c < num_constraints; ++c) {</div>
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<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> type = model_proto_.constraints(c).constraint_case();</div>
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<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="keywordflow">if</span> (type >= type_to_constraints_.size()) {</div>
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<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  type_to_constraints_.resize(type + 1);</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>  type_to_constraints_[type].push_back(c);</div>
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<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  }</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>  active_variables_.clear();</div>
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<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  active_variables_set_.assign(model_proto_.variables_size(), <span class="keyword">false</span>);</div>
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<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  </div>
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<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="keywordflow">if</span> (parameters_.lns_focus_on_decision_variables()) {</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="keyword">auto</span>& search_strategy : model_proto_.search_strategy()) {</div>
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<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> : search_strategy.variables()) {</div>
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<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> pos_var = <a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div>
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<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="keywordflow">if</span> (!active_variables_set_[pos_var] && !IsConstant(pos_var)) {</div>
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<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  active_variables_set_[pos_var] = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  active_variables_.push_back(pos_var);</div>
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<div class="line"><a name="l00161"></a><span class="lineno"> 161</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>  </div>
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<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <span class="comment">// Revert to no focus if active_variables_ is empty().</span></div>
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<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="keywordflow">if</span> (!active_variables_.empty()) <span class="keywordflow">return</span>;</div>
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<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  }</div>
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<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  </div>
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<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="comment">// Add all non-constant variables.</span></div>
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<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < model_proto_.variables_size(); ++i) {</div>
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<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="keywordflow">if</span> (!IsConstant(i)) {</div>
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<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  active_variables_.push_back(i);</div>
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<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  active_variables_set_[i] = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00174"></a><span class="lineno"> 174</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> }</div>
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<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  </div>
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<div class="line"><a name="l00178"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a3536511769245b28739a715de62b0193"> 178</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a3536511769245b28739a715de62b0193">NeighborhoodGeneratorHelper::IsActive</a>(<span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>)<span class="keyword"> const </span>{</div>
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<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="keywordflow">return</span> active_variables_set_[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>];</div>
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<div class="line"><a name="l00180"></a><span class="lineno"> 180</span> }</div>
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<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  </div>
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<div class="line"><a name="l00182"></a><span class="lineno"> 182</span> <span class="keywordtype">bool</span> NeighborhoodGeneratorHelper::IsConstant(<span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>)<span class="keyword"> const </span>{</div>
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<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  <span class="keywordflow">return</span> model_proto_with_only_variables_.variables(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>).domain_size() == 2 &&</div>
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<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  model_proto_with_only_variables_.variables(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>).domain(0) ==</div>
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<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  model_proto_with_only_variables_.variables(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>).domain(1);</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>  </div>
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<div class="line"><a name="l00188"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a15cb168917371b5fb2d17b00e640de63"> 188</a></span> <a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html">Neighborhood</a> <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a15cb168917371b5fb2d17b00e640de63">NeighborhoodGeneratorHelper::FullNeighborhood</a>()<span class="keyword"> const </span>{</div>
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<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  <a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html">Neighborhood</a> neighborhood;</div>
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<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#a8e672808c179f95cf4c626aef798bbc7">is_reduced</a> = <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#a04d448b3000c058b67ad17541473a317">is_generated</a> = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#ae580758c31ce30f5e52d9a732efd1267">cp_model</a> = model_proto_;</div>
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<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  *neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#ae580758c31ce30f5e52d9a732efd1267">cp_model</a>.mutable_variables() =</div>
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<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  model_proto_with_only_variables_.variables();</div>
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<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  <span class="keywordflow">return</span> neighborhood;</div>
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<div class="line"><a name="l00196"></a><span class="lineno"> 196</span> }</div>
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<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  </div>
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<div class="line"><a name="l00198"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a8b0ea5233e98dcd85233c074a034fd05"> 198</a></span> std::vector<int> <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a8b0ea5233e98dcd85233c074a034fd05">NeighborhoodGeneratorHelper::GetActiveIntervals</a>(</div>
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<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  <span class="keyword">const</span> CpSolverResponse& initial_solution)<span class="keyword"> const </span>{</div>
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<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  std::vector<int> active_intervals;</div>
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<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> i : <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a6aef4ca16709a75231ee1691c306c641">TypeToConstraints</a>(ConstraintProto::kInterval)) {</div>
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<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  <span class="keyword">const</span> ConstraintProto& interval_ct = <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a9f348ae7c22fbaa73b72bc976455ab14">ModelProto</a>().constraints(i);</div>
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<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <span class="comment">// We only look at intervals that are performed in the solution. The</span></div>
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<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="comment">// unperformed intervals should be automatically freed during the generation</span></div>
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<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  <span class="comment">// phase.</span></div>
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<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  <span class="keywordflow">if</span> (interval_ct.enforcement_literal().size() == 1) {</div>
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<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> enforcement_ref = interval_ct.enforcement_literal(0);</div>
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<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> enforcement_var = <a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(enforcement_ref);</div>
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<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="demon__profiler_8cc.html#a21edc7ca4cc5802c8779d68556bc09cf">value</a> = initial_solution.solution(enforcement_var);</div>
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<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  <span class="keywordflow">if</span> (<a class="code" href="namespaceoperations__research_1_1sat.html#a217338425de4389014563f1f24331713">RefIsPositive</a>(enforcement_ref) == (<a class="code" href="demon__profiler_8cc.html#a21edc7ca4cc5802c8779d68556bc09cf">value</a> == 0)) {</div>
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<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  <span class="keywordflow">continue</span>;</div>
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<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  }</div>
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<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  }</div>
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<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  </div>
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<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  <span class="comment">// We filter out fixed intervals. Because of presolve, if there is an</span></div>
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<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  <span class="comment">// enforcement literal, it cannot be fixed.</span></div>
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<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <span class="keywordflow">if</span> (interval_ct.enforcement_literal().empty() &&</div>
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<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  IsConstant(<a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(interval_ct.interval().start())) &&</div>
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<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  IsConstant(<a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(interval_ct.interval().size())) &&</div>
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<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  IsConstant(<a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(interval_ct.interval().end()))) {</div>
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<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  <span class="keywordflow">continue</span>;</div>
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<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  }</div>
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<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  </div>
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<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  active_intervals.push_back(i);</div>
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<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  }</div>
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<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  <span class="keywordflow">return</span> active_intervals;</div>
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<div class="line"><a name="l00227"></a><span class="lineno"> 227</span> }</div>
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<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  </div>
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<div class="line"><a name="l00229"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a586408c556a6e1732ac80d8df9cdee5b"> 229</a></span> <a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html">Neighborhood</a> <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a586408c556a6e1732ac80d8df9cdee5b">NeighborhoodGeneratorHelper::FixGivenVariables</a>(</div>
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<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  <span class="keyword">const</span> CpSolverResponse& initial_solution,</div>
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<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  <span class="keyword">const</span> std::vector<int>& variables_to_fix)<span class="keyword"> const </span>{</div>
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<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  <span class="comment">// TODO(user,user): Do not include constraint with all fixed variables to</span></div>
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<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  <span class="comment">// save memory and speed-up LNS presolving.</span></div>
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<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  <a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html">Neighborhood</a> neighborhood = <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a15cb168917371b5fb2d17b00e640de63">FullNeighborhood</a>();</div>
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<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  </div>
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<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  <span class="comment">// Set the current solution as a hint.</span></div>
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<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#ae580758c31ce30f5e52d9a732efd1267">cp_model</a>.clear_solution_hint();</div>
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<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> = 0; <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> < neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#ae580758c31ce30f5e52d9a732efd1267">cp_model</a>.variables_size(); ++<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>) {</div>
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<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#ae580758c31ce30f5e52d9a732efd1267">cp_model</a>.mutable_solution_hint()->add_vars(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div>
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<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#ae580758c31ce30f5e52d9a732efd1267">cp_model</a>.mutable_solution_hint()->add_values(</div>
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<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  initial_solution.solution(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>));</div>
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<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  }</div>
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<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  </div>
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<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#a8e672808c179f95cf4c626aef798bbc7">is_reduced</a> = !variables_to_fix.empty();</div>
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<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  <span class="keywordflow">if</span> (!neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#a8e672808c179f95cf4c626aef798bbc7">is_reduced</a>) <span class="keywordflow">return</span> neighborhood;</div>
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<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  <a class="code" href="base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b">CHECK_EQ</a>(initial_solution.solution_size(),</div>
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<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#ae580758c31ce30f5e52d9a732efd1267">cp_model</a>.variables_size());</div>
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<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> : variables_to_fix) {</div>
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<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#ae580758c31ce30f5e52d9a732efd1267">cp_model</a>.mutable_variables(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>)->clear_domain();</div>
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<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#ae580758c31ce30f5e52d9a732efd1267">cp_model</a>.mutable_variables(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>)->add_domain(</div>
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<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  initial_solution.solution(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>));</div>
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<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#ae580758c31ce30f5e52d9a732efd1267">cp_model</a>.mutable_variables(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>)->add_domain(</div>
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<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  initial_solution.solution(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>));</div>
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<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  }</div>
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<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  </div>
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<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  <span class="comment">// TODO(user): force better objective? Note that this is already done when the</span></div>
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|
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  <span class="comment">// hint above is successfully loaded (i.e. if it passes the presolve</span></div>
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|
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  <span class="comment">// correctly) since the solver will try to find better solution than the</span></div>
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|
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  <span class="comment">// current one.</span></div>
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<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  <span class="keywordflow">return</span> neighborhood;</div>
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<div class="line"><a name="l00261"></a><span class="lineno"> 261</span> }</div>
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<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  </div>
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<div class="line"><a name="l00263"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#ac0763b7b9e44b9b30e78b9dd4da8e98a"> 263</a></span> <a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html">Neighborhood</a> <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#ac0763b7b9e44b9b30e78b9dd4da8e98a">NeighborhoodGeneratorHelper::RemoveMarkedConstraints</a>(</div>
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<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  <span class="keyword">const</span> std::vector<int>& constraints_to_remove)<span class="keyword"> const </span>{</div>
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<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  <span class="comment">// TODO(user,user): Do not include constraint with all fixed variables to</span></div>
|
|
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  <span class="comment">// save memory and speed-up LNS presolving.</span></div>
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|
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  <a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html">Neighborhood</a> neighborhood = <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a15cb168917371b5fb2d17b00e640de63">FullNeighborhood</a>();</div>
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<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  </div>
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<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  <span class="keywordflow">if</span> (constraints_to_remove.empty()) <span class="keywordflow">return</span> neighborhood;</div>
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<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#a8e672808c179f95cf4c626aef798bbc7">is_reduced</a> = <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> constraint : constraints_to_remove) {</div>
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<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#ae580758c31ce30f5e52d9a732efd1267">cp_model</a>.mutable_constraints(constraint)->Clear();</div>
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<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  }</div>
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<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  </div>
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<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  <span class="keywordflow">return</span> neighborhood;</div>
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<div class="line"><a name="l00276"></a><span class="lineno"> 276</span> }</div>
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<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  </div>
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<div class="line"><a name="l00278"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a8735c6fd1459361aa6696a77f8042bf1"> 278</a></span> <a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html">Neighborhood</a> <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a8735c6fd1459361aa6696a77f8042bf1">NeighborhoodGeneratorHelper::RelaxGivenVariables</a>(</div>
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<div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  <span class="keyword">const</span> CpSolverResponse& initial_solution,</div>
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<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  <span class="keyword">const</span> std::vector<int>& relaxed_variables)<span class="keyword"> const </span>{</div>
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<div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  std::vector<bool> relaxed_variables_set(model_proto_.variables_size(), <span class="keyword">false</span>);</div>
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<div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> : relaxed_variables) relaxed_variables_set[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>] = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  std::vector<int> fixed_variables;</div>
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<div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> i : active_variables_) {</div>
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<div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  <span class="keywordflow">if</span> (!relaxed_variables_set[i]) {</div>
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<div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  fixed_variables.push_back(i);</div>
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<div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  }</div>
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<div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  }</div>
|
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<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  <span class="keywordflow">return</span> <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a586408c556a6e1732ac80d8df9cdee5b">FixGivenVariables</a>(initial_solution, fixed_variables);</div>
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<div class="line"><a name="l00290"></a><span class="lineno"> 290</span> }</div>
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<div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  </div>
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<div class="line"><a name="l00292"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a307d968091a3bddbbce257cca9b79fbb"> 292</a></span> <a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html">Neighborhood</a> <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a307d968091a3bddbbce257cca9b79fbb">NeighborhoodGeneratorHelper::FixAllVariables</a>(</div>
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<div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  <span class="keyword">const</span> CpSolverResponse& initial_solution)<span class="keyword"> const </span>{</div>
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|
<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  std::vector<int> fixed_variables;</div>
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<div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> i : active_variables_) {</div>
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<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  fixed_variables.push_back(i);</div>
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<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  }</div>
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<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  <span class="keywordflow">return</span> <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a586408c556a6e1732ac80d8df9cdee5b">FixGivenVariables</a>(initial_solution, fixed_variables);</div>
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<div class="line"><a name="l00299"></a><span class="lineno"> 299</span> }</div>
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<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  </div>
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<div class="line"><a name="l00301"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#a34c45a33de4f8a713e99bbf97d8d08d6"> 301</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#a34c45a33de4f8a713e99bbf97d8d08d6">NeighborhoodGenerator::ReadyToGenerate</a>()<span class="keyword"> const </span>{</div>
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<div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  <span class="keywordflow">return</span> (<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#acbd503b89d1dc3dd85dfa9e0e5058472">helper_</a>.<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a0e31a4150ae965379d0f05d51a0c1673">shared_response</a>().<a class="code" href="classoperations__research_1_1sat_1_1_shared_response_manager.html#a3dffd827657e9ba58a4e786e4c352abc">SolutionsRepository</a>().<a class="code" href="classoperations__research_1_1sat_1_1_shared_solution_repository.html#a6d2b6f7951b60c786fdbefcbe7c3571f">NumSolutions</a>() > 0);</div>
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<div class="line"><a name="l00303"></a><span class="lineno"> 303</span> }</div>
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<div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  </div>
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<div class="line"><a name="l00305"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#a8c5aac83a5aea832261e7a5ab425e54b"> 305</a></span> <span class="keywordtype">double</span> <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#a8c5aac83a5aea832261e7a5ab425e54b">NeighborhoodGenerator::GetUCBScore</a>(<a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> total_num_calls)<span class="keyword"> const </span>{</div>
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<div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  absl::MutexLock mutex_lock(&<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#a9e87d3b4ec76aff1ff99016ce9a8dd73">mutex_</a>);</div>
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<div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  <a class="code" href="base_2logging_8h.html#aae2dc65d9ea248d54bf39daa986dd295">DCHECK_GE</a>(total_num_calls, num_calls_);</div>
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<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  <span class="keywordflow">if</span> (num_calls_ <= 10) <span class="keywordflow">return</span> std::numeric_limits<double>::infinity();</div>
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<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  <span class="keywordflow">return</span> current_average_ + sqrt((2 * log(total_num_calls)) / num_calls_);</div>
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<div class="line"><a name="l00310"></a><span class="lineno"> 310</span> }</div>
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<div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  </div>
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<div class="line"><a name="l00312"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#a9ca5b99b3550503ca7bad8418e133156"> 312</a></span> <span class="keywordtype">void</span> <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#a9ca5b99b3550503ca7bad8418e133156">NeighborhoodGenerator::Synchronize</a>() {</div>
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<div class="line"><a name="l00313"></a><span class="lineno"> 313</span>  absl::MutexLock mutex_lock(&<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#a9e87d3b4ec76aff1ff99016ce9a8dd73">mutex_</a>);</div>
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<div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  </div>
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<div class="line"><a name="l00315"></a><span class="lineno"> 315</span>  <span class="comment">// To make the whole update process deterministic, we currently sort the</span></div>
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<div class="line"><a name="l00316"></a><span class="lineno"> 316</span>  <span class="comment">// SolveData.</span></div>
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<div class="line"><a name="l00317"></a><span class="lineno"> 317</span>  std::sort(solve_data_.begin(), solve_data_.end());</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>  <span class="comment">// This will be used to update the difficulty of this neighborhood.</span></div>
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<div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  <span class="keywordtype">int</span> num_fully_solved_in_batch = 0;</div>
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<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  <span class="keywordtype">int</span> num_not_fully_solved_in_batch = 0;</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="keywordflow">for</span> (<span class="keyword">const</span> <a class="code" href="structoperations__research_1_1sat_1_1_neighborhood_generator_1_1_solve_data.html">SolveData</a>& data : solve_data_) {</div>
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<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#ac497558c5257914ba8ffdc4e95e59c21">AdditionalProcessingOnSynchronize</a>(data);</div>
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<div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  ++num_calls_;</div>
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<div class="line"><a name="l00326"></a><span class="lineno"> 326</span>  </div>
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<div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  <span class="comment">// INFEASIBLE or OPTIMAL means that we "fully solved" the local problem.</span></div>
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<div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  <span class="comment">// If we didn't, then we cannot be sure that there is no improving solution</span></div>
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<div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  <span class="comment">// in that neighborhood.</span></div>
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<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  <span class="keywordflow">if</span> (data.status == <a class="code" href="namespaceoperations__research_1_1sat.html#aedc4ddb96acc28481c09828d2e016815a2884fa43446c0cbc9c7a9b74d41d7483">CpSolverStatus::INFEASIBLE</a> ||</div>
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<div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  data.status == <a class="code" href="namespaceoperations__research_1_1sat.html#aedc4ddb96acc28481c09828d2e016815a2579881e7c83261bc21bafb5a5c92cad">CpSolverStatus::OPTIMAL</a>) {</div>
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<div class="line"><a name="l00332"></a><span class="lineno"> 332</span>  ++num_fully_solved_calls_;</div>
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<div class="line"><a name="l00333"></a><span class="lineno"> 333</span>  ++num_fully_solved_in_batch;</div>
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<div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  } <span class="keywordflow">else</span> {</div>
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<div class="line"><a name="l00335"></a><span class="lineno"> 335</span>  ++num_not_fully_solved_in_batch;</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>  </div>
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<div class="line"><a name="l00338"></a><span class="lineno"> 338</span>  <span class="comment">// It seems to make more sense to compare the new objective to the base</span></div>
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<div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  <span class="comment">// solution objective, not the best one. However this causes issue in the</span></div>
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<div class="line"><a name="l00340"></a><span class="lineno"> 340</span>  <span class="comment">// logic below because on some problems the neighborhood can always lead</span></div>
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<div class="line"><a name="l00341"></a><span class="lineno"> 341</span>  <span class="comment">// to a better "new objective" if the base solution wasn't the best one.</span></div>
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<div class="line"><a name="l00342"></a><span class="lineno"> 342</span>  <span class="comment">//</span></div>
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<div class="line"><a name="l00343"></a><span class="lineno"> 343</span>  <span class="comment">// This might not be a final solution, but it does work ok for now.</span></div>
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<div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  <span class="keyword">const</span> IntegerValue best_objective_improvement =</div>
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<div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#a0c8b86bd60b4fc70cb653a12d50c2ce8">IsRelaxationGenerator</a>()</div>
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<div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  ? IntegerValue(<a class="code" href="namespaceoperations__research.html#a228fe84d99348c2b62bb4f70a6371d9b">CapSub</a>(data.new_objective_bound.value(),</div>
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<div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  data.initial_best_objective_bound.value()))</div>
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<div class="line"><a name="l00348"></a><span class="lineno"> 348</span>  : IntegerValue(<a class="code" href="namespaceoperations__research.html#a228fe84d99348c2b62bb4f70a6371d9b">CapSub</a>(data.initial_best_objective.value(),</div>
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<div class="line"><a name="l00349"></a><span class="lineno"> 349</span>  data.new_objective.value()));</div>
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<div class="line"><a name="l00350"></a><span class="lineno"> 350</span>  <span class="keywordflow">if</span> (best_objective_improvement > 0) {</div>
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<div class="line"><a name="l00351"></a><span class="lineno"> 351</span>  num_consecutive_non_improving_calls_ = 0;</div>
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|
<div class="line"><a name="l00352"></a><span class="lineno"> 352</span>  } <span class="keywordflow">else</span> {</div>
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<div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  ++num_consecutive_non_improving_calls_;</div>
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|
<div class="line"><a name="l00354"></a><span class="lineno"> 354</span>  }</div>
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<div class="line"><a name="l00355"></a><span class="lineno"> 355</span>  </div>
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<div class="line"><a name="l00356"></a><span class="lineno"> 356</span>  <span class="comment">// TODO(user): Weight more recent data.</span></div>
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|
<div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  <span class="comment">// degrade the current average to forget old learnings.</span></div>
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<div class="line"><a name="l00358"></a><span class="lineno"> 358</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> gain_per_time_unit =</div>
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<div class="line"><a name="l00359"></a><span class="lineno"> 359</span>  <a class="code" href="alldiff__cst_8cc.html#a9d0c202d5fdd62f4fa2c613339ff168a">std::max</a>(0.0, <span class="keyword">static_cast<</span><span class="keywordtype">double</span><span class="keyword">></span>(best_objective_improvement.value())) /</div>
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<div class="line"><a name="l00360"></a><span class="lineno"> 360</span>  (1.0 + data.deterministic_time);</div>
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<div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  <span class="keywordflow">if</span> (num_calls_ <= 100) {</div>
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<div class="line"><a name="l00362"></a><span class="lineno"> 362</span>  current_average_ += (gain_per_time_unit - current_average_) / num_calls_;</div>
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|
<div class="line"><a name="l00363"></a><span class="lineno"> 363</span>  } <span class="keywordflow">else</span> {</div>
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<div class="line"><a name="l00364"></a><span class="lineno"> 364</span>  current_average_ = 0.9 * current_average_ + 0.1 * gain_per_time_unit;</div>
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<div class="line"><a name="l00365"></a><span class="lineno"> 365</span>  }</div>
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<div class="line"><a name="l00366"></a><span class="lineno"> 366</span>  </div>
|
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<div class="line"><a name="l00367"></a><span class="lineno"> 367</span>  deterministic_time_ += data.deterministic_time;</div>
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|
<div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  }</div>
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<div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  </div>
|
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<div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  <span class="comment">// Update the difficulty.</span></div>
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<div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  difficulty_.<a class="code" href="classoperations__research_1_1_adaptive_parameter_value.html#af9bf551154d37f48132472bd0f6dd848">Update</a>(<span class="comment">/*num_decreases=*/</span>num_not_fully_solved_in_batch,</div>
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<div class="line"><a name="l00372"></a><span class="lineno"> 372</span>  <span class="comment">/*num_increases=*/</span>num_fully_solved_in_batch);</div>
|
|
<div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  </div>
|
|
<div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  <span class="comment">// Bump the time limit if we saw no better solution in the last few calls.</span></div>
|
|
<div class="line"><a name="l00375"></a><span class="lineno"> 375</span>  <span class="comment">// This means that as the search progress, we likely spend more and more time</span></div>
|
|
<div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  <span class="comment">// trying to solve individual neighborhood.</span></div>
|
|
<div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  <span class="comment">//</span></div>
|
|
<div class="line"><a name="l00378"></a><span class="lineno"> 378</span>  <span class="comment">// TODO(user): experiment with resetting the time limit if a solution is</span></div>
|
|
<div class="line"><a name="l00379"></a><span class="lineno"> 379</span>  <span class="comment">// found.</span></div>
|
|
<div class="line"><a name="l00380"></a><span class="lineno"> 380</span>  <span class="keywordflow">if</span> (num_consecutive_non_improving_calls_ > 50) {</div>
|
|
<div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  num_consecutive_non_improving_calls_ = 0;</div>
|
|
<div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  deterministic_limit_ *= 1.02;</div>
|
|
<div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  </div>
|
|
<div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  <span class="comment">// We do not want the limit to go to high. Intuitively, the goal is to try</span></div>
|
|
<div class="line"><a name="l00385"></a><span class="lineno"> 385</span>  <span class="comment">// out a lot of neighborhoods, not just spend a lot of time on a few.</span></div>
|
|
<div class="line"><a name="l00386"></a><span class="lineno"> 386</span>  deterministic_limit_ = <a class="code" href="alldiff__cst_8cc.html#a021e695f54a13bd809c34b2f4ca87c37">std::min</a>(60.0, deterministic_limit_);</div>
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|
<div class="line"><a name="l00387"></a><span class="lineno"> 387</span>  }</div>
|
|
<div class="line"><a name="l00388"></a><span class="lineno"> 388</span>  </div>
|
|
<div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  solve_data_.clear();</div>
|
|
<div class="line"><a name="l00390"></a><span class="lineno"> 390</span> }</div>
|
|
<div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  </div>
|
|
<div class="line"><a name="l00392"></a><span class="lineno"> 392</span> <span class="keyword">namespace </span>{</div>
|
|
<div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  </div>
|
|
<div class="line"><a name="l00394"></a><span class="lineno"> 394</span> <span class="keywordtype">void</span> GetRandomSubset(<span class="keywordtype">double</span> relative_size, std::vector<int>* base,</div>
|
|
<div class="line"><a name="l00395"></a><span class="lineno"> 395</span>  absl::BitGenRef random) {</div>
|
|
<div class="line"><a name="l00396"></a><span class="lineno"> 396</span>  <span class="comment">// TODO(user): we could generate this more efficiently than using random</span></div>
|
|
<div class="line"><a name="l00397"></a><span class="lineno"> 397</span>  <span class="comment">// shuffle.</span></div>
|
|
<div class="line"><a name="l00398"></a><span class="lineno"> 398</span>  std::shuffle(base->begin(), base->end(), random);</div>
|
|
<div class="line"><a name="l00399"></a><span class="lineno"> 399</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> target_size = std::round(relative_size * base->size());</div>
|
|
<div class="line"><a name="l00400"></a><span class="lineno"> 400</span>  base->resize(target_size);</div>
|
|
<div class="line"><a name="l00401"></a><span class="lineno"> 401</span> }</div>
|
|
<div class="line"><a name="l00402"></a><span class="lineno"> 402</span>  </div>
|
|
<div class="line"><a name="l00403"></a><span class="lineno"> 403</span> } <span class="comment">// namespace</span></div>
|
|
<div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  </div>
|
|
<div class="line"><a name="l00405"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_simple_neighborhood_generator.html#a8afb8ece44037532a15303d3533bdced"> 405</a></span> <a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html">Neighborhood</a> <a class="code" href="classoperations__research_1_1sat_1_1_simple_neighborhood_generator.html#a8afb8ece44037532a15303d3533bdced">SimpleNeighborhoodGenerator::Generate</a>(</div>
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|
<div class="line"><a name="l00406"></a><span class="lineno"> 406</span>  <span class="keyword">const</span> CpSolverResponse& initial_solution, <span class="keywordtype">double</span> difficulty,</div>
|
|
<div class="line"><a name="l00407"></a><span class="lineno"> 407</span>  absl::BitGenRef random) {</div>
|
|
<div class="line"><a name="l00408"></a><span class="lineno"> 408</span>  std::vector<int> fixed_variables = <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#acbd503b89d1dc3dd85dfa9e0e5058472">helper_</a>.<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a9cbca4684dddbad2d60b4dbcb1f90aba">ActiveVariables</a>();</div>
|
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<div class="line"><a name="l00409"></a><span class="lineno"> 409</span>  GetRandomSubset(1.0 - <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#a43616719fac14b34582903ef03d114ac">difficulty</a>, &fixed_variables, random);</div>
|
|
<div class="line"><a name="l00410"></a><span class="lineno"> 410</span>  <span class="keywordflow">return</span> <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#acbd503b89d1dc3dd85dfa9e0e5058472">helper_</a>.<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a586408c556a6e1732ac80d8df9cdee5b">FixGivenVariables</a>(initial_solution, fixed_variables);</div>
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|
<div class="line"><a name="l00411"></a><span class="lineno"> 411</span> }</div>
|
|
<div class="line"><a name="l00412"></a><span class="lineno"> 412</span>  </div>
|
|
<div class="line"><a name="l00413"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_simple_constraint_neighborhood_generator.html#a8afb8ece44037532a15303d3533bdced"> 413</a></span> <a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html">Neighborhood</a> <a class="code" href="classoperations__research_1_1sat_1_1_simple_constraint_neighborhood_generator.html#a8afb8ece44037532a15303d3533bdced">SimpleConstraintNeighborhoodGenerator::Generate</a>(</div>
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<div class="line"><a name="l00414"></a><span class="lineno"> 414</span>  <span class="keyword">const</span> CpSolverResponse& initial_solution, <span class="keywordtype">double</span> difficulty,</div>
|
|
<div class="line"><a name="l00415"></a><span class="lineno"> 415</span>  absl::BitGenRef random) {</div>
|
|
<div class="line"><a name="l00416"></a><span class="lineno"> 416</span>  std::vector<int> active_constraints;</div>
|
|
<div class="line"><a name="l00417"></a><span class="lineno"> 417</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a> = 0; <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a> < <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#acbd503b89d1dc3dd85dfa9e0e5058472">helper_</a>.<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a9f348ae7c22fbaa73b72bc976455ab14">ModelProto</a>().constraints_size(); ++<a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>) {</div>
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|
<div class="line"><a name="l00418"></a><span class="lineno"> 418</span>  <span class="keywordflow">if</span> (<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#acbd503b89d1dc3dd85dfa9e0e5058472">helper_</a>.<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a9f348ae7c22fbaa73b72bc976455ab14">ModelProto</a>().constraints(<a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>).constraint_case() ==</div>
|
|
<div class="line"><a name="l00419"></a><span class="lineno"> 419</span>  ConstraintProto::CONSTRAINT_NOT_SET) {</div>
|
|
<div class="line"><a name="l00420"></a><span class="lineno"> 420</span>  <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l00421"></a><span class="lineno"> 421</span>  }</div>
|
|
<div class="line"><a name="l00422"></a><span class="lineno"> 422</span>  active_constraints.push_back(<a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>);</div>
|
|
<div class="line"><a name="l00423"></a><span class="lineno"> 423</span>  }</div>
|
|
<div class="line"><a name="l00424"></a><span class="lineno"> 424</span>  </div>
|
|
<div class="line"><a name="l00425"></a><span class="lineno"> 425</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> num_active_vars = <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#acbd503b89d1dc3dd85dfa9e0e5058472">helper_</a>.<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a9cbca4684dddbad2d60b4dbcb1f90aba">ActiveVariables</a>().size();</div>
|
|
<div class="line"><a name="l00426"></a><span class="lineno"> 426</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> num_model_vars = <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#acbd503b89d1dc3dd85dfa9e0e5058472">helper_</a>.<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a9f348ae7c22fbaa73b72bc976455ab14">ModelProto</a>().variables_size();</div>
|
|
<div class="line"><a name="l00427"></a><span class="lineno"> 427</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> target_size = std::ceil(<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#a43616719fac14b34582903ef03d114ac">difficulty</a> * num_active_vars);</div>
|
|
<div class="line"><a name="l00428"></a><span class="lineno"> 428</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> num_constraints = <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#acbd503b89d1dc3dd85dfa9e0e5058472">helper_</a>.<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#ac3e42ca3d76c8f2ce836a85688768672">ConstraintToVar</a>().size();</div>
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|
<div class="line"><a name="l00429"></a><span class="lineno"> 429</span>  <span class="keywordflow">if</span> (num_constraints == 0 || target_size == num_active_vars) {</div>
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<div class="line"><a name="l00430"></a><span class="lineno"> 430</span>  <span class="keywordflow">return</span> <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#acbd503b89d1dc3dd85dfa9e0e5058472">helper_</a>.<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a15cb168917371b5fb2d17b00e640de63">FullNeighborhood</a>();</div>
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<div class="line"><a name="l00431"></a><span class="lineno"> 431</span>  }</div>
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<div class="line"><a name="l00432"></a><span class="lineno"> 432</span>  <a class="code" href="base_2logging_8h.html#a7e03ec13560fa94a8fea569960d7efc6">CHECK_GT</a>(target_size, 0);</div>
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<div class="line"><a name="l00433"></a><span class="lineno"> 433</span>  </div>
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<div class="line"><a name="l00434"></a><span class="lineno"> 434</span>  std::shuffle(active_constraints.begin(), active_constraints.end(), random);</div>
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<div class="line"><a name="l00435"></a><span class="lineno"> 435</span>  </div>
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<div class="line"><a name="l00436"></a><span class="lineno"> 436</span>  std::vector<bool> visited_variables_set(num_model_vars, <span class="keyword">false</span>);</div>
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<div class="line"><a name="l00437"></a><span class="lineno"> 437</span>  std::vector<int> relaxed_variables;</div>
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<div class="line"><a name="l00438"></a><span class="lineno"> 438</span>  </div>
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<div class="line"><a name="l00439"></a><span class="lineno"> 439</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> constraint_index : active_constraints) {</div>
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<div class="line"><a name="l00440"></a><span class="lineno"> 440</span>  <a class="code" href="base_2logging_8h.html#a4bd2e815ca2f702a4b6aa744b1ff3b82">CHECK_LT</a>(constraint_index, num_constraints);</div>
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<div class="line"><a name="l00441"></a><span class="lineno"> 441</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> : <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#acbd503b89d1dc3dd85dfa9e0e5058472">helper_</a>.<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#ac3e42ca3d76c8f2ce836a85688768672">ConstraintToVar</a>()[constraint_index]) {</div>
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<div class="line"><a name="l00442"></a><span class="lineno"> 442</span>  <span class="keywordflow">if</span> (visited_variables_set[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>]) <span class="keywordflow">continue</span>;</div>
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<div class="line"><a name="l00443"></a><span class="lineno"> 443</span>  visited_variables_set[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>] = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00444"></a><span class="lineno"> 444</span>  <span class="keywordflow">if</span> (<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#acbd503b89d1dc3dd85dfa9e0e5058472">helper_</a>.<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a3536511769245b28739a715de62b0193">IsActive</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>)) {</div>
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<div class="line"><a name="l00445"></a><span class="lineno"> 445</span>  relaxed_variables.push_back(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div>
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<div class="line"><a name="l00446"></a><span class="lineno"> 446</span>  <span class="keywordflow">if</span> (relaxed_variables.size() == target_size) <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00447"></a><span class="lineno"> 447</span>  }</div>
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<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">if</span> (relaxed_variables.size() == target_size) <span class="keywordflow">break</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>  <span class="keywordflow">return</span> <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#acbd503b89d1dc3dd85dfa9e0e5058472">helper_</a>.<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a8735c6fd1459361aa6696a77f8042bf1">RelaxGivenVariables</a>(initial_solution, relaxed_variables);</div>
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<div class="line"><a name="l00452"></a><span class="lineno"> 452</span> }</div>
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<div class="line"><a name="l00453"></a><span class="lineno"> 453</span>  </div>
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<div class="line"><a name="l00454"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_variable_graph_neighborhood_generator.html#a8afb8ece44037532a15303d3533bdced"> 454</a></span> <a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html">Neighborhood</a> <a class="code" href="classoperations__research_1_1sat_1_1_variable_graph_neighborhood_generator.html#a8afb8ece44037532a15303d3533bdced">VariableGraphNeighborhoodGenerator::Generate</a>(</div>
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<div class="line"><a name="l00455"></a><span class="lineno"> 455</span>  <span class="keyword">const</span> CpSolverResponse& initial_solution, <span class="keywordtype">double</span> difficulty,</div>
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<div class="line"><a name="l00456"></a><span class="lineno"> 456</span>  absl::BitGenRef random) {</div>
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<div class="line"><a name="l00457"></a><span class="lineno"> 457</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> num_active_vars = <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#acbd503b89d1dc3dd85dfa9e0e5058472">helper_</a>.<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a9cbca4684dddbad2d60b4dbcb1f90aba">ActiveVariables</a>().size();</div>
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<div class="line"><a name="l00458"></a><span class="lineno"> 458</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> num_model_vars = <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#acbd503b89d1dc3dd85dfa9e0e5058472">helper_</a>.<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a9f348ae7c22fbaa73b72bc976455ab14">ModelProto</a>().variables_size();</div>
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<div class="line"><a name="l00459"></a><span class="lineno"> 459</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> target_size = std::ceil(<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#a43616719fac14b34582903ef03d114ac">difficulty</a> * num_active_vars);</div>
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<div class="line"><a name="l00460"></a><span class="lineno"> 460</span>  <span class="keywordflow">if</span> (target_size == num_active_vars) {</div>
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<div class="line"><a name="l00461"></a><span class="lineno"> 461</span>  <span class="keywordflow">return</span> <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#acbd503b89d1dc3dd85dfa9e0e5058472">helper_</a>.<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a15cb168917371b5fb2d17b00e640de63">FullNeighborhood</a>();</div>
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<div class="line"><a name="l00462"></a><span class="lineno"> 462</span>  }</div>
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<div class="line"><a name="l00463"></a><span class="lineno"> 463</span>  <a class="code" href="base_2logging_8h.html#a7e03ec13560fa94a8fea569960d7efc6">CHECK_GT</a>(target_size, 0) << <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#a43616719fac14b34582903ef03d114ac">difficulty</a> << <span class="stringliteral">" "</span> << num_active_vars;</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>  std::vector<bool> visited_variables_set(num_model_vars, <span class="keyword">false</span>);</div>
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<div class="line"><a name="l00466"></a><span class="lineno"> 466</span>  std::vector<int> relaxed_variables;</div>
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<div class="line"><a name="l00467"></a><span class="lineno"> 467</span>  std::vector<int> visited_variables;</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>  <span class="keyword">const</span> <span class="keywordtype">int</span> first_var =</div>
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<div class="line"><a name="l00470"></a><span class="lineno"> 470</span>  <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#acbd503b89d1dc3dd85dfa9e0e5058472">helper_</a>.<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a9cbca4684dddbad2d60b4dbcb1f90aba">ActiveVariables</a>()[absl::Uniform<int>(random, 0, num_active_vars)];</div>
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<div class="line"><a name="l00471"></a><span class="lineno"> 471</span>  visited_variables_set[first_var] = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00472"></a><span class="lineno"> 472</span>  visited_variables.push_back(first_var);</div>
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<div class="line"><a name="l00473"></a><span class="lineno"> 473</span>  relaxed_variables.push_back(first_var);</div>
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<div class="line"><a name="l00474"></a><span class="lineno"> 474</span>  </div>
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<div class="line"><a name="l00475"></a><span class="lineno"> 475</span>  std::vector<int> random_variables;</div>
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<div class="line"><a name="l00476"></a><span class="lineno"> 476</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < visited_variables.size(); ++i) {</div>
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<div class="line"><a name="l00477"></a><span class="lineno"> 477</span>  random_variables.clear();</div>
|
|
<div class="line"><a name="l00478"></a><span class="lineno"> 478</span>  <span class="comment">// Collect all the variables that appears in the same constraints as</span></div>
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|
<div class="line"><a name="l00479"></a><span class="lineno"> 479</span>  <span class="comment">// visited_variables[i].</span></div>
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<div class="line"><a name="l00480"></a><span class="lineno"> 480</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a> : <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#acbd503b89d1dc3dd85dfa9e0e5058472">helper_</a>.<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a126969fed21452a041a7014fb86ff105">VarToConstraint</a>()[visited_variables[i]]) {</div>
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<div class="line"><a name="l00481"></a><span class="lineno"> 481</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> : <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#acbd503b89d1dc3dd85dfa9e0e5058472">helper_</a>.<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#ac3e42ca3d76c8f2ce836a85688768672">ConstraintToVar</a>()[<a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>]) {</div>
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<div class="line"><a name="l00482"></a><span class="lineno"> 482</span>  <span class="keywordflow">if</span> (visited_variables_set[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>]) <span class="keywordflow">continue</span>;</div>
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<div class="line"><a name="l00483"></a><span class="lineno"> 483</span>  visited_variables_set[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>] = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00484"></a><span class="lineno"> 484</span>  random_variables.push_back(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div>
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<div class="line"><a name="l00485"></a><span class="lineno"> 485</span>  }</div>
|
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<div class="line"><a name="l00486"></a><span class="lineno"> 486</span>  }</div>
|
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<div class="line"><a name="l00487"></a><span class="lineno"> 487</span>  <span class="comment">// We always randomize to change the partial subgraph explored afterwards.</span></div>
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<div class="line"><a name="l00488"></a><span class="lineno"> 488</span>  std::shuffle(random_variables.begin(), random_variables.end(), random);</div>
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<div class="line"><a name="l00489"></a><span class="lineno"> 489</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> : random_variables) {</div>
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<div class="line"><a name="l00490"></a><span class="lineno"> 490</span>  <span class="keywordflow">if</span> (relaxed_variables.size() < target_size) {</div>
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<div class="line"><a name="l00491"></a><span class="lineno"> 491</span>  visited_variables.push_back(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div>
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<div class="line"><a name="l00492"></a><span class="lineno"> 492</span>  <span class="keywordflow">if</span> (<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#acbd503b89d1dc3dd85dfa9e0e5058472">helper_</a>.<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a3536511769245b28739a715de62b0193">IsActive</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>)) {</div>
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|
<div class="line"><a name="l00493"></a><span class="lineno"> 493</span>  relaxed_variables.push_back(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</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">else</span> {</div>
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<div class="line"><a name="l00496"></a><span class="lineno"> 496</span>  <span class="keywordflow">break</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"> 498</span>  }</div>
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<div class="line"><a name="l00499"></a><span class="lineno"> 499</span>  <span class="keywordflow">if</span> (relaxed_variables.size() >= target_size) <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00500"></a><span class="lineno"> 500</span>  }</div>
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<div class="line"><a name="l00501"></a><span class="lineno"> 501</span>  </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_neighborhood_generator.html#acbd503b89d1dc3dd85dfa9e0e5058472">helper_</a>.<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a8735c6fd1459361aa6696a77f8042bf1">RelaxGivenVariables</a>(initial_solution, relaxed_variables);</div>
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<div class="line"><a name="l00503"></a><span class="lineno"> 503</span> }</div>
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<div class="line"><a name="l00504"></a><span class="lineno"> 504</span>  </div>
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<div class="line"><a name="l00505"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_constraint_graph_neighborhood_generator.html#a8afb8ece44037532a15303d3533bdced"> 505</a></span> <a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html">Neighborhood</a> <a class="code" href="classoperations__research_1_1sat_1_1_constraint_graph_neighborhood_generator.html#a8afb8ece44037532a15303d3533bdced">ConstraintGraphNeighborhoodGenerator::Generate</a>(</div>
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<div class="line"><a name="l00506"></a><span class="lineno"> 506</span>  <span class="keyword">const</span> CpSolverResponse& initial_solution, <span class="keywordtype">double</span> difficulty,</div>
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<div class="line"><a name="l00507"></a><span class="lineno"> 507</span>  absl::BitGenRef random) {</div>
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<div class="line"><a name="l00508"></a><span class="lineno"> 508</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> num_active_vars = <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#acbd503b89d1dc3dd85dfa9e0e5058472">helper_</a>.<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a9cbca4684dddbad2d60b4dbcb1f90aba">ActiveVariables</a>().size();</div>
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<div class="line"><a name="l00509"></a><span class="lineno"> 509</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> num_model_vars = <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#acbd503b89d1dc3dd85dfa9e0e5058472">helper_</a>.<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a9f348ae7c22fbaa73b72bc976455ab14">ModelProto</a>().variables_size();</div>
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<div class="line"><a name="l00510"></a><span class="lineno"> 510</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> target_size = std::ceil(<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#a43616719fac14b34582903ef03d114ac">difficulty</a> * num_active_vars);</div>
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<div class="line"><a name="l00511"></a><span class="lineno"> 511</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> num_constraints = <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#acbd503b89d1dc3dd85dfa9e0e5058472">helper_</a>.<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#ac3e42ca3d76c8f2ce836a85688768672">ConstraintToVar</a>().size();</div>
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<div class="line"><a name="l00512"></a><span class="lineno"> 512</span>  <span class="keywordflow">if</span> (num_constraints == 0 || target_size == num_active_vars) {</div>
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<div class="line"><a name="l00513"></a><span class="lineno"> 513</span>  <span class="keywordflow">return</span> <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#acbd503b89d1dc3dd85dfa9e0e5058472">helper_</a>.<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a15cb168917371b5fb2d17b00e640de63">FullNeighborhood</a>();</div>
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<div class="line"><a name="l00514"></a><span class="lineno"> 514</span>  }</div>
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<div class="line"><a name="l00515"></a><span class="lineno"> 515</span>  <a class="code" href="base_2logging_8h.html#a7e03ec13560fa94a8fea569960d7efc6">CHECK_GT</a>(target_size, 0);</div>
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<div class="line"><a name="l00516"></a><span class="lineno"> 516</span>  </div>
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<div class="line"><a name="l00517"></a><span class="lineno"> 517</span>  std::vector<bool> visited_variables_set(num_model_vars, <span class="keyword">false</span>);</div>
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|
<div class="line"><a name="l00518"></a><span class="lineno"> 518</span>  std::vector<int> relaxed_variables;</div>
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<div class="line"><a name="l00519"></a><span class="lineno"> 519</span>  std::vector<bool> added_constraints(num_constraints, <span class="keyword">false</span>);</div>
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<div class="line"><a name="l00520"></a><span class="lineno"> 520</span>  std::vector<int> next_constraints;</div>
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<div class="line"><a name="l00521"></a><span class="lineno"> 521</span>  </div>
|
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<div class="line"><a name="l00522"></a><span class="lineno"> 522</span>  <span class="comment">// Start by a random constraint.</span></div>
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<div class="line"><a name="l00523"></a><span class="lineno"> 523</span>  next_constraints.push_back(absl::Uniform<int>(random, 0, num_constraints));</div>
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<div class="line"><a name="l00524"></a><span class="lineno"> 524</span>  added_constraints[next_constraints.back()] = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00525"></a><span class="lineno"> 525</span>  </div>
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<div class="line"><a name="l00526"></a><span class="lineno"> 526</span>  std::vector<int> random_variables;</div>
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<div class="line"><a name="l00527"></a><span class="lineno"> 527</span>  <span class="keywordflow">while</span> (relaxed_variables.size() < target_size) {</div>
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<div class="line"><a name="l00528"></a><span class="lineno"> 528</span>  <span class="comment">// Stop if we have a full connected component.</span></div>
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<div class="line"><a name="l00529"></a><span class="lineno"> 529</span>  <span class="keywordflow">if</span> (next_constraints.empty()) <span class="keywordflow">break</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>  <span class="comment">// Pick a random unprocessed constraint.</span></div>
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<div class="line"><a name="l00532"></a><span class="lineno"> 532</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> i = absl::Uniform<int>(random, 0, next_constraints.size());</div>
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<div class="line"><a name="l00533"></a><span class="lineno"> 533</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> constraint_index = next_constraints[i];</div>
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<div class="line"><a name="l00534"></a><span class="lineno"> 534</span>  std::swap(next_constraints[i], next_constraints.back());</div>
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<div class="line"><a name="l00535"></a><span class="lineno"> 535</span>  next_constraints.pop_back();</div>
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<div class="line"><a name="l00536"></a><span class="lineno"> 536</span>  </div>
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<div class="line"><a name="l00537"></a><span class="lineno"> 537</span>  <span class="comment">// Add all the variable of this constraint and increase the set of next</span></div>
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<div class="line"><a name="l00538"></a><span class="lineno"> 538</span>  <span class="comment">// possible constraints.</span></div>
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<div class="line"><a name="l00539"></a><span class="lineno"> 539</span>  <a class="code" href="base_2logging_8h.html#a4bd2e815ca2f702a4b6aa744b1ff3b82">CHECK_LT</a>(constraint_index, num_constraints);</div>
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<div class="line"><a name="l00540"></a><span class="lineno"> 540</span>  random_variables = <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#acbd503b89d1dc3dd85dfa9e0e5058472">helper_</a>.<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#ac3e42ca3d76c8f2ce836a85688768672">ConstraintToVar</a>()[constraint_index];</div>
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<div class="line"><a name="l00541"></a><span class="lineno"> 541</span>  std::shuffle(random_variables.begin(), random_variables.end(), random);</div>
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<div class="line"><a name="l00542"></a><span class="lineno"> 542</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> : random_variables) {</div>
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<div class="line"><a name="l00543"></a><span class="lineno"> 543</span>  <span class="keywordflow">if</span> (visited_variables_set[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>]) <span class="keywordflow">continue</span>;</div>
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<div class="line"><a name="l00544"></a><span class="lineno"> 544</span>  visited_variables_set[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>] = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00545"></a><span class="lineno"> 545</span>  <span class="keywordflow">if</span> (<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#acbd503b89d1dc3dd85dfa9e0e5058472">helper_</a>.<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a3536511769245b28739a715de62b0193">IsActive</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>)) {</div>
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<div class="line"><a name="l00546"></a><span class="lineno"> 546</span>  relaxed_variables.push_back(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div>
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<div class="line"><a name="l00547"></a><span class="lineno"> 547</span>  }</div>
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<div class="line"><a name="l00548"></a><span class="lineno"> 548</span>  <span class="keywordflow">if</span> (relaxed_variables.size() == target_size) <span class="keywordflow">break</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>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a> : <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#acbd503b89d1dc3dd85dfa9e0e5058472">helper_</a>.<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a126969fed21452a041a7014fb86ff105">VarToConstraint</a>()[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>]) {</div>
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<div class="line"><a name="l00551"></a><span class="lineno"> 551</span>  <span class="keywordflow">if</span> (added_constraints[<a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>]) <span class="keywordflow">continue</span>;</div>
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<div class="line"><a name="l00552"></a><span class="lineno"> 552</span>  added_constraints[<a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>] = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00553"></a><span class="lineno"> 553</span>  next_constraints.push_back(<a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>);</div>
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<div class="line"><a name="l00554"></a><span class="lineno"> 554</span>  }</div>
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<div class="line"><a name="l00555"></a><span class="lineno"> 555</span>  }</div>
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<div class="line"><a name="l00556"></a><span class="lineno"> 556</span>  }</div>
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<div class="line"><a name="l00557"></a><span class="lineno"> 557</span>  <span class="keywordflow">return</span> <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#acbd503b89d1dc3dd85dfa9e0e5058472">helper_</a>.<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a8735c6fd1459361aa6696a77f8042bf1">RelaxGivenVariables</a>(initial_solution, relaxed_variables);</div>
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<div class="line"><a name="l00558"></a><span class="lineno"> 558</span> }</div>
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<div class="line"><a name="l00559"></a><span class="lineno"> 559</span>  </div>
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<div class="line"><a name="l00560"></a><span class="lineno"><a class="line" href="namespaceoperations__research_1_1sat.html#ad57491858f7814f0a03845022b6de35e"> 560</a></span> <a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html">Neighborhood</a> <a class="code" href="namespaceoperations__research_1_1sat.html#ad57491858f7814f0a03845022b6de35e">GenerateSchedulingNeighborhoodForRelaxation</a>(</div>
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<div class="line"><a name="l00561"></a><span class="lineno"> 561</span>  <span class="keyword">const</span> absl::Span<const int> intervals_to_relax,</div>
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<div class="line"><a name="l00562"></a><span class="lineno"> 562</span>  <span class="keyword">const</span> CpSolverResponse& initial_solution,</div>
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<div class="line"><a name="l00563"></a><span class="lineno"> 563</span>  <span class="keyword">const</span> <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html">NeighborhoodGeneratorHelper</a>& helper) {</div>
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<div class="line"><a name="l00564"></a><span class="lineno"> 564</span>  <a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html">Neighborhood</a> neighborhood = helper.<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a15cb168917371b5fb2d17b00e640de63">FullNeighborhood</a>();</div>
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<div class="line"><a name="l00565"></a><span class="lineno"> 565</span>  neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#a8e672808c179f95cf4c626aef798bbc7">is_reduced</a> =</div>
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<div class="line"><a name="l00566"></a><span class="lineno"> 566</span>  (intervals_to_relax.size() <</div>
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<div class="line"><a name="l00567"></a><span class="lineno"> 567</span>  helper.<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a6aef4ca16709a75231ee1691c306c641">TypeToConstraints</a>(ConstraintProto::kInterval).size());</div>
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<div class="line"><a name="l00568"></a><span class="lineno"> 568</span>  </div>
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<div class="line"><a name="l00569"></a><span class="lineno"> 569</span>  <span class="comment">// We will extend the set with some interval that we cannot fix.</span></div>
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<div class="line"><a name="l00570"></a><span class="lineno"> 570</span>  std::set<int> ignored_intervals(intervals_to_relax.begin(),</div>
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<div class="line"><a name="l00571"></a><span class="lineno"> 571</span>  intervals_to_relax.end());</div>
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<div class="line"><a name="l00572"></a><span class="lineno"> 572</span>  </div>
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<div class="line"><a name="l00573"></a><span class="lineno"> 573</span>  <span class="comment">// Fix the presence/absence of non-relaxed intervals.</span></div>
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|
<div class="line"><a name="l00574"></a><span class="lineno"> 574</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> i : helper.<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a6aef4ca16709a75231ee1691c306c641">TypeToConstraints</a>(ConstraintProto::kInterval)) {</div>
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|
<div class="line"><a name="l00575"></a><span class="lineno"> 575</span>  <span class="keywordflow">if</span> (ignored_intervals.count(i)) <span class="keywordflow">continue</span>;</div>
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<div class="line"><a name="l00576"></a><span class="lineno"> 576</span>  </div>
|
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<div class="line"><a name="l00577"></a><span class="lineno"> 577</span>  <span class="keyword">const</span> ConstraintProto& interval_ct = neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#ae580758c31ce30f5e52d9a732efd1267">cp_model</a>.constraints(i);</div>
|
|
<div class="line"><a name="l00578"></a><span class="lineno"> 578</span>  <span class="keywordflow">if</span> (interval_ct.enforcement_literal().empty()) <span class="keywordflow">continue</span>;</div>
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|
<div class="line"><a name="l00579"></a><span class="lineno"> 579</span>  </div>
|
|
<div class="line"><a name="l00580"></a><span class="lineno"> 580</span>  <a class="code" href="base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b">CHECK_EQ</a>(interval_ct.enforcement_literal().size(), 1);</div>
|
|
<div class="line"><a name="l00581"></a><span class="lineno"> 581</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> enforcement_ref = interval_ct.enforcement_literal(0);</div>
|
|
<div class="line"><a name="l00582"></a><span class="lineno"> 582</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> enforcement_var = <a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(enforcement_ref);</div>
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|
<div class="line"><a name="l00583"></a><span class="lineno"> 583</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="demon__profiler_8cc.html#a21edc7ca4cc5802c8779d68556bc09cf">value</a> = initial_solution.solution(enforcement_var);</div>
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|
<div class="line"><a name="l00584"></a><span class="lineno"> 584</span>  </div>
|
|
<div class="line"><a name="l00585"></a><span class="lineno"> 585</span>  <span class="comment">// If the interval is not enforced, we just relax it. If it belongs to an</span></div>
|
|
<div class="line"><a name="l00586"></a><span class="lineno"> 586</span>  <span class="comment">// exactly one constraint, and the enforced interval is not relaxed, then</span></div>
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|
<div class="line"><a name="l00587"></a><span class="lineno"> 587</span>  <span class="comment">// propagation will force this interval to stay not enforced. Otherwise,</span></div>
|
|
<div class="line"><a name="l00588"></a><span class="lineno"> 588</span>  <span class="comment">// LNS will be able to change which interval will be enforced among all</span></div>
|
|
<div class="line"><a name="l00589"></a><span class="lineno"> 589</span>  <span class="comment">// alternatives.</span></div>
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<div class="line"><a name="l00590"></a><span class="lineno"> 590</span>  <span class="keywordflow">if</span> (<a class="code" href="namespaceoperations__research_1_1sat.html#a217338425de4389014563f1f24331713">RefIsPositive</a>(enforcement_ref) == (<a class="code" href="demon__profiler_8cc.html#a21edc7ca4cc5802c8779d68556bc09cf">value</a> == 0)) {</div>
|
|
<div class="line"><a name="l00591"></a><span class="lineno"> 591</span>  ignored_intervals.insert(i);</div>
|
|
<div class="line"><a name="l00592"></a><span class="lineno"> 592</span>  <span class="keywordflow">continue</span>;</div>
|
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<div class="line"><a name="l00593"></a><span class="lineno"> 593</span>  }</div>
|
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<div class="line"><a name="l00594"></a><span class="lineno"> 594</span>  </div>
|
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<div class="line"><a name="l00595"></a><span class="lineno"> 595</span>  <span class="comment">// Fix the value.</span></div>
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|
<div class="line"><a name="l00596"></a><span class="lineno"> 596</span>  neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#ae580758c31ce30f5e52d9a732efd1267">cp_model</a>.mutable_variables(enforcement_var)->clear_domain();</div>
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|
<div class="line"><a name="l00597"></a><span class="lineno"> 597</span>  neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#ae580758c31ce30f5e52d9a732efd1267">cp_model</a>.mutable_variables(enforcement_var)->add_domain(<a class="code" href="demon__profiler_8cc.html#a21edc7ca4cc5802c8779d68556bc09cf">value</a>);</div>
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<div class="line"><a name="l00598"></a><span class="lineno"> 598</span>  neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#ae580758c31ce30f5e52d9a732efd1267">cp_model</a>.mutable_variables(enforcement_var)->add_domain(<a class="code" href="demon__profiler_8cc.html#a21edc7ca4cc5802c8779d68556bc09cf">value</a>);</div>
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<div class="line"><a name="l00599"></a><span class="lineno"> 599</span>  }</div>
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|
<div class="line"><a name="l00600"></a><span class="lineno"> 600</span>  </div>
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<div class="line"><a name="l00601"></a><span class="lineno"> 601</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> c : helper.<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a6aef4ca16709a75231ee1691c306c641">TypeToConstraints</a>(ConstraintProto::kNoOverlap)) {</div>
|
|
<div class="line"><a name="l00602"></a><span class="lineno"> 602</span>  <span class="comment">// Sort all non-relaxed intervals of this constraint by current start</span></div>
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|
<div class="line"><a name="l00603"></a><span class="lineno"> 603</span>  <span class="comment">// time.</span></div>
|
|
<div class="line"><a name="l00604"></a><span class="lineno"> 604</span>  std::vector<std::pair<int64, int>> start_interval_pairs;</div>
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<div class="line"><a name="l00605"></a><span class="lineno"> 605</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> i :</div>
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<div class="line"><a name="l00606"></a><span class="lineno"> 606</span>  neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#ae580758c31ce30f5e52d9a732efd1267">cp_model</a>.constraints(c).no_overlap().intervals()) {</div>
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<div class="line"><a name="l00607"></a><span class="lineno"> 607</span>  <span class="keywordflow">if</span> (ignored_intervals.count(i)) <span class="keywordflow">continue</span>;</div>
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<div class="line"><a name="l00608"></a><span class="lineno"> 608</span>  <span class="keyword">const</span> ConstraintProto& interval_ct = neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#ae580758c31ce30f5e52d9a732efd1267">cp_model</a>.constraints(i);</div>
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<div class="line"><a name="l00609"></a><span class="lineno"> 609</span>  </div>
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<div class="line"><a name="l00610"></a><span class="lineno"> 610</span>  <span class="comment">// TODO(user): we ignore size zero for now.</span></div>
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<div class="line"><a name="l00611"></a><span class="lineno"> 611</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> size_var = interval_ct.interval().size();</div>
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<div class="line"><a name="l00612"></a><span class="lineno"> 612</span>  <span class="keywordflow">if</span> (initial_solution.solution(size_var) == 0) <span class="keywordflow">continue</span>;</div>
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<div class="line"><a name="l00613"></a><span class="lineno"> 613</span>  </div>
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<div class="line"><a name="l00614"></a><span class="lineno"> 614</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> start_var = interval_ct.interval().start();</div>
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<div class="line"><a name="l00615"></a><span class="lineno"> 615</span>  <span class="keyword">const</span> <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> start_value = initial_solution.solution(start_var);</div>
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<div class="line"><a name="l00616"></a><span class="lineno"> 616</span>  start_interval_pairs.push_back({start_value, i});</div>
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<div class="line"><a name="l00617"></a><span class="lineno"> 617</span>  }</div>
|
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<div class="line"><a name="l00618"></a><span class="lineno"> 618</span>  std::sort(start_interval_pairs.begin(), start_interval_pairs.end());</div>
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<div class="line"><a name="l00619"></a><span class="lineno"> 619</span>  </div>
|
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<div class="line"><a name="l00620"></a><span class="lineno"> 620</span>  <span class="comment">// Add precedence between the remaining intervals, forcing their order.</span></div>
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|
<div class="line"><a name="l00621"></a><span class="lineno"> 621</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i + 1 < start_interval_pairs.size(); ++i) {</div>
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<div class="line"><a name="l00622"></a><span class="lineno"> 622</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> before_var =</div>
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<div class="line"><a name="l00623"></a><span class="lineno"> 623</span>  neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#ae580758c31ce30f5e52d9a732efd1267">cp_model</a>.constraints(start_interval_pairs[i].second)</div>
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<div class="line"><a name="l00624"></a><span class="lineno"> 624</span>  .interval()</div>
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<div class="line"><a name="l00625"></a><span class="lineno"> 625</span>  .end();</div>
|
|
<div class="line"><a name="l00626"></a><span class="lineno"> 626</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> after_var =</div>
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|
<div class="line"><a name="l00627"></a><span class="lineno"> 627</span>  neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#ae580758c31ce30f5e52d9a732efd1267">cp_model</a>.constraints(start_interval_pairs[i + 1].second)</div>
|
|
<div class="line"><a name="l00628"></a><span class="lineno"> 628</span>  .interval()</div>
|
|
<div class="line"><a name="l00629"></a><span class="lineno"> 629</span>  .start();</div>
|
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<div class="line"><a name="l00630"></a><span class="lineno"> 630</span>  <a class="code" href="base_2logging_8h.html#ae4db23f10f5d4aad6d735f5a74cd6f8c">CHECK_LE</a>(initial_solution.solution(before_var),</div>
|
|
<div class="line"><a name="l00631"></a><span class="lineno"> 631</span>  initial_solution.solution(after_var));</div>
|
|
<div class="line"><a name="l00632"></a><span class="lineno"> 632</span>  </div>
|
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<div class="line"><a name="l00633"></a><span class="lineno"> 633</span>  LinearConstraintProto* linear =</div>
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|
<div class="line"><a name="l00634"></a><span class="lineno"> 634</span>  neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#ae580758c31ce30f5e52d9a732efd1267">cp_model</a>.add_constraints()->mutable_linear();</div>
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|
<div class="line"><a name="l00635"></a><span class="lineno"> 635</span>  linear->add_domain(<a class="code" href="integral__types_8h.html#af458164b470cbba416d5ed579e00ff60">kint64min</a>);</div>
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|
<div class="line"><a name="l00636"></a><span class="lineno"> 636</span>  linear->add_domain(0);</div>
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<div class="line"><a name="l00637"></a><span class="lineno"> 637</span>  linear->add_vars(before_var);</div>
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<div class="line"><a name="l00638"></a><span class="lineno"> 638</span>  linear->add_coeffs(1);</div>
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<div class="line"><a name="l00639"></a><span class="lineno"> 639</span>  linear->add_vars(after_var);</div>
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<div class="line"><a name="l00640"></a><span class="lineno"> 640</span>  linear->add_coeffs(-1);</div>
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<div class="line"><a name="l00641"></a><span class="lineno"> 641</span>  }</div>
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|
<div class="line"><a name="l00642"></a><span class="lineno"> 642</span>  }</div>
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<div class="line"><a name="l00643"></a><span class="lineno"> 643</span>  </div>
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<div class="line"><a name="l00644"></a><span class="lineno"> 644</span>  <span class="comment">// Set the current solution as a hint.</span></div>
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|
<div class="line"><a name="l00645"></a><span class="lineno"> 645</span>  <span class="comment">//</span></div>
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<div class="line"><a name="l00646"></a><span class="lineno"> 646</span>  <span class="comment">// TODO(user): Move to common function?</span></div>
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<div class="line"><a name="l00647"></a><span class="lineno"> 647</span>  neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#ae580758c31ce30f5e52d9a732efd1267">cp_model</a>.clear_solution_hint();</div>
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|
<div class="line"><a name="l00648"></a><span class="lineno"> 648</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> = 0; <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> < neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#ae580758c31ce30f5e52d9a732efd1267">cp_model</a>.variables_size(); ++<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>) {</div>
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<div class="line"><a name="l00649"></a><span class="lineno"> 649</span>  neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#ae580758c31ce30f5e52d9a732efd1267">cp_model</a>.mutable_solution_hint()->add_vars(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div>
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<div class="line"><a name="l00650"></a><span class="lineno"> 650</span>  neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#ae580758c31ce30f5e52d9a732efd1267">cp_model</a>.mutable_solution_hint()->add_values(</div>
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<div class="line"><a name="l00651"></a><span class="lineno"> 651</span>  initial_solution.solution(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>));</div>
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|
<div class="line"><a name="l00652"></a><span class="lineno"> 652</span>  }</div>
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|
<div class="line"><a name="l00653"></a><span class="lineno"> 653</span>  neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#a04d448b3000c058b67ad17541473a317">is_generated</a> = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00654"></a><span class="lineno"> 654</span>  </div>
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|
<div class="line"><a name="l00655"></a><span class="lineno"> 655</span>  <span class="keywordflow">return</span> neighborhood;</div>
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|
<div class="line"><a name="l00656"></a><span class="lineno"> 656</span> }</div>
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|
<div class="line"><a name="l00657"></a><span class="lineno"> 657</span>  </div>
|
|
<div class="line"><a name="l00658"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_scheduling_neighborhood_generator.html#a8afb8ece44037532a15303d3533bdced"> 658</a></span> <a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html">Neighborhood</a> <a class="code" href="classoperations__research_1_1sat_1_1_scheduling_neighborhood_generator.html#a8afb8ece44037532a15303d3533bdced">SchedulingNeighborhoodGenerator::Generate</a>(</div>
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<div class="line"><a name="l00659"></a><span class="lineno"> 659</span>  <span class="keyword">const</span> CpSolverResponse& initial_solution, <span class="keywordtype">double</span> difficulty,</div>
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<div class="line"><a name="l00660"></a><span class="lineno"> 660</span>  absl::BitGenRef random) {</div>
|
|
<div class="line"><a name="l00661"></a><span class="lineno"> 661</span>  std::vector<int> intervals_to_relax =</div>
|
|
<div class="line"><a name="l00662"></a><span class="lineno"> 662</span>  <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#acbd503b89d1dc3dd85dfa9e0e5058472">helper_</a>.<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a8b0ea5233e98dcd85233c074a034fd05">GetActiveIntervals</a>(initial_solution);</div>
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|
<div class="line"><a name="l00663"></a><span class="lineno"> 663</span>  GetRandomSubset(<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#a43616719fac14b34582903ef03d114ac">difficulty</a>, &intervals_to_relax, random);</div>
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|
<div class="line"><a name="l00664"></a><span class="lineno"> 664</span>  </div>
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<div class="line"><a name="l00665"></a><span class="lineno"> 665</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceoperations__research_1_1sat.html#ad57491858f7814f0a03845022b6de35e">GenerateSchedulingNeighborhoodForRelaxation</a>(intervals_to_relax,</div>
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|
<div class="line"><a name="l00666"></a><span class="lineno"> 666</span>  initial_solution, <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#acbd503b89d1dc3dd85dfa9e0e5058472">helper_</a>);</div>
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|
<div class="line"><a name="l00667"></a><span class="lineno"> 667</span> }</div>
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|
<div class="line"><a name="l00668"></a><span class="lineno"> 668</span>  </div>
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<div class="line"><a name="l00669"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_scheduling_time_window_neighborhood_generator.html#a8afb8ece44037532a15303d3533bdced"> 669</a></span> <a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html">Neighborhood</a> <a class="code" href="classoperations__research_1_1sat_1_1_scheduling_time_window_neighborhood_generator.html#a8afb8ece44037532a15303d3533bdced">SchedulingTimeWindowNeighborhoodGenerator::Generate</a>(</div>
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<div class="line"><a name="l00670"></a><span class="lineno"> 670</span>  <span class="keyword">const</span> CpSolverResponse& initial_solution, <span class="keywordtype">double</span> difficulty,</div>
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|
<div class="line"><a name="l00671"></a><span class="lineno"> 671</span>  absl::BitGenRef random) {</div>
|
|
<div class="line"><a name="l00672"></a><span class="lineno"> 672</span>  std::vector<std::pair<int64, int>> start_interval_pairs;</div>
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|
<div class="line"><a name="l00673"></a><span class="lineno"> 673</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> i : <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#acbd503b89d1dc3dd85dfa9e0e5058472">helper_</a>.<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a8b0ea5233e98dcd85233c074a034fd05">GetActiveIntervals</a>(initial_solution)) {</div>
|
|
<div class="line"><a name="l00674"></a><span class="lineno"> 674</span>  <span class="keyword">const</span> ConstraintProto& interval_ct = <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#acbd503b89d1dc3dd85dfa9e0e5058472">helper_</a>.<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a9f348ae7c22fbaa73b72bc976455ab14">ModelProto</a>().constraints(i);</div>
|
|
<div class="line"><a name="l00675"></a><span class="lineno"> 675</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> start_var = interval_ct.interval().start();</div>
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|
<div class="line"><a name="l00676"></a><span class="lineno"> 676</span>  <span class="keyword">const</span> <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> start_value = initial_solution.solution(start_var);</div>
|
|
<div class="line"><a name="l00677"></a><span class="lineno"> 677</span>  start_interval_pairs.push_back({start_value, i});</div>
|
|
<div class="line"><a name="l00678"></a><span class="lineno"> 678</span>  }</div>
|
|
<div class="line"><a name="l00679"></a><span class="lineno"> 679</span>  std::sort(start_interval_pairs.begin(), start_interval_pairs.end());</div>
|
|
<div class="line"><a name="l00680"></a><span class="lineno"> 680</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> relaxed_size = std::floor(<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#a43616719fac14b34582903ef03d114ac">difficulty</a> * start_interval_pairs.size());</div>
|
|
<div class="line"><a name="l00681"></a><span class="lineno"> 681</span>  </div>
|
|
<div class="line"><a name="l00682"></a><span class="lineno"> 682</span>  std::uniform_int_distribution<int> random_var(</div>
|
|
<div class="line"><a name="l00683"></a><span class="lineno"> 683</span>  0, start_interval_pairs.size() - relaxed_size - 1);</div>
|
|
<div class="line"><a name="l00684"></a><span class="lineno"> 684</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> random_start_index = random_var(random);</div>
|
|
<div class="line"><a name="l00685"></a><span class="lineno"> 685</span>  std::vector<int> intervals_to_relax;</div>
|
|
<div class="line"><a name="l00686"></a><span class="lineno"> 686</span>  <span class="comment">// TODO(user,user): Consider relaxing more than one time window intervals.</span></div>
|
|
<div class="line"><a name="l00687"></a><span class="lineno"> 687</span>  <span class="comment">// This seems to help with Giza models.</span></div>
|
|
<div class="line"><a name="l00688"></a><span class="lineno"> 688</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = random_start_index; i < relaxed_size; ++i) {</div>
|
|
<div class="line"><a name="l00689"></a><span class="lineno"> 689</span>  intervals_to_relax.push_back(start_interval_pairs[i].second);</div>
|
|
<div class="line"><a name="l00690"></a><span class="lineno"> 690</span>  }</div>
|
|
<div class="line"><a name="l00691"></a><span class="lineno"> 691</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceoperations__research_1_1sat.html#ad57491858f7814f0a03845022b6de35e">GenerateSchedulingNeighborhoodForRelaxation</a>(intervals_to_relax,</div>
|
|
<div class="line"><a name="l00692"></a><span class="lineno"> 692</span>  initial_solution, <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#acbd503b89d1dc3dd85dfa9e0e5058472">helper_</a>);</div>
|
|
<div class="line"><a name="l00693"></a><span class="lineno"> 693</span> }</div>
|
|
<div class="line"><a name="l00694"></a><span class="lineno"> 694</span>  </div>
|
|
<div class="line"><a name="l00695"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_relaxation_induced_neighborhood_generator.html#a18bd97b50e3170dabf1f537e19695054"> 695</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_relaxation_induced_neighborhood_generator.html#a18bd97b50e3170dabf1f537e19695054">RelaxationInducedNeighborhoodGenerator::ReadyToGenerate</a>()<span class="keyword"> const </span>{</div>
|
|
<div class="line"><a name="l00696"></a><span class="lineno"> 696</span>  <span class="keywordflow">if</span> (incomplete_solutions_ != <span class="keyword">nullptr</span>) {</div>
|
|
<div class="line"><a name="l00697"></a><span class="lineno"> 697</span>  <span class="keywordflow">return</span> incomplete_solutions_-><a class="code" href="classoperations__research_1_1sat_1_1_shared_incomplete_solution_manager.html#afad444837cdc77c60e71abb9294753b9">HasNewSolution</a>();</div>
|
|
<div class="line"><a name="l00698"></a><span class="lineno"> 698</span>  }</div>
|
|
<div class="line"><a name="l00699"></a><span class="lineno"> 699</span>  </div>
|
|
<div class="line"><a name="l00700"></a><span class="lineno"> 700</span>  <span class="keywordflow">if</span> (response_manager_ != <span class="keyword">nullptr</span>) {</div>
|
|
<div class="line"><a name="l00701"></a><span class="lineno"> 701</span>  <span class="keywordflow">if</span> (response_manager_-><a class="code" href="classoperations__research_1_1sat_1_1_shared_response_manager.html#a3dffd827657e9ba58a4e786e4c352abc">SolutionsRepository</a>().<a class="code" href="classoperations__research_1_1sat_1_1_shared_solution_repository.html#a6d2b6f7951b60c786fdbefcbe7c3571f">NumSolutions</a>() == 0) {</div>
|
|
<div class="line"><a name="l00702"></a><span class="lineno"> 702</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00703"></a><span class="lineno"> 703</span>  }</div>
|
|
<div class="line"><a name="l00704"></a><span class="lineno"> 704</span>  }</div>
|
|
<div class="line"><a name="l00705"></a><span class="lineno"> 705</span>  </div>
|
|
<div class="line"><a name="l00706"></a><span class="lineno"> 706</span>  <span class="comment">// At least one relaxation solution should be available to generate a</span></div>
|
|
<div class="line"><a name="l00707"></a><span class="lineno"> 707</span>  <span class="comment">// neighborhood.</span></div>
|
|
<div class="line"><a name="l00708"></a><span class="lineno"> 708</span>  <span class="keywordflow">if</span> (lp_solutions_ != <span class="keyword">nullptr</span> && lp_solutions_-><a class="code" href="classoperations__research_1_1sat_1_1_shared_solution_repository.html#a6d2b6f7951b60c786fdbefcbe7c3571f">NumSolutions</a>() > 0) {</div>
|
|
<div class="line"><a name="l00709"></a><span class="lineno"> 709</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00710"></a><span class="lineno"> 710</span>  }</div>
|
|
<div class="line"><a name="l00711"></a><span class="lineno"> 711</span>  </div>
|
|
<div class="line"><a name="l00712"></a><span class="lineno"> 712</span>  <span class="keywordflow">if</span> (relaxation_solutions_ != <span class="keyword">nullptr</span> &&</div>
|
|
<div class="line"><a name="l00713"></a><span class="lineno"> 713</span>  relaxation_solutions_-><a class="code" href="classoperations__research_1_1sat_1_1_shared_solution_repository.html#a6d2b6f7951b60c786fdbefcbe7c3571f">NumSolutions</a>() > 0) {</div>
|
|
<div class="line"><a name="l00714"></a><span class="lineno"> 714</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00715"></a><span class="lineno"> 715</span>  }</div>
|
|
<div class="line"><a name="l00716"></a><span class="lineno"> 716</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00717"></a><span class="lineno"> 717</span> }</div>
|
|
<div class="line"><a name="l00718"></a><span class="lineno"> 718</span>  </div>
|
|
<div class="line"><a name="l00719"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_relaxation_induced_neighborhood_generator.html#a8afb8ece44037532a15303d3533bdced"> 719</a></span> <a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html">Neighborhood</a> <a class="code" href="classoperations__research_1_1sat_1_1_relaxation_induced_neighborhood_generator.html#a8afb8ece44037532a15303d3533bdced">RelaxationInducedNeighborhoodGenerator::Generate</a>(</div>
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|
<div class="line"><a name="l00720"></a><span class="lineno"> 720</span>  <span class="keyword">const</span> CpSolverResponse& initial_solution, <span class="keywordtype">double</span> difficulty,</div>
|
|
<div class="line"><a name="l00721"></a><span class="lineno"> 721</span>  absl::BitGenRef random) {</div>
|
|
<div class="line"><a name="l00722"></a><span class="lineno"> 722</span>  <a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html">Neighborhood</a> neighborhood = <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#acbd503b89d1dc3dd85dfa9e0e5058472">helper_</a>.<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a15cb168917371b5fb2d17b00e640de63">FullNeighborhood</a>();</div>
|
|
<div class="line"><a name="l00723"></a><span class="lineno"> 723</span>  neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#a04d448b3000c058b67ad17541473a317">is_generated</a> = <span class="keyword">false</span>;</div>
|
|
<div class="line"><a name="l00724"></a><span class="lineno"> 724</span>  </div>
|
|
<div class="line"><a name="l00725"></a><span class="lineno"> 725</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> lp_solution_available =</div>
|
|
<div class="line"><a name="l00726"></a><span class="lineno"> 726</span>  (lp_solutions_ != <span class="keyword">nullptr</span> && lp_solutions_-><a class="code" href="classoperations__research_1_1sat_1_1_shared_solution_repository.html#a6d2b6f7951b60c786fdbefcbe7c3571f">NumSolutions</a>() > 0);</div>
|
|
<div class="line"><a name="l00727"></a><span class="lineno"> 727</span>  </div>
|
|
<div class="line"><a name="l00728"></a><span class="lineno"> 728</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> relaxation_solution_available =</div>
|
|
<div class="line"><a name="l00729"></a><span class="lineno"> 729</span>  (relaxation_solutions_ != <span class="keyword">nullptr</span> &&</div>
|
|
<div class="line"><a name="l00730"></a><span class="lineno"> 730</span>  relaxation_solutions_-><a class="code" href="classoperations__research_1_1sat_1_1_shared_solution_repository.html#a6d2b6f7951b60c786fdbefcbe7c3571f">NumSolutions</a>() > 0);</div>
|
|
<div class="line"><a name="l00731"></a><span class="lineno"> 731</span>  </div>
|
|
<div class="line"><a name="l00732"></a><span class="lineno"> 732</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> incomplete_solution_available =</div>
|
|
<div class="line"><a name="l00733"></a><span class="lineno"> 733</span>  (incomplete_solutions_ != <span class="keyword">nullptr</span> &&</div>
|
|
<div class="line"><a name="l00734"></a><span class="lineno"> 734</span>  incomplete_solutions_-><a class="code" href="classoperations__research_1_1sat_1_1_shared_incomplete_solution_manager.html#afad444837cdc77c60e71abb9294753b9">HasNewSolution</a>());</div>
|
|
<div class="line"><a name="l00735"></a><span class="lineno"> 735</span>  </div>
|
|
<div class="line"><a name="l00736"></a><span class="lineno"> 736</span>  <span class="keywordflow">if</span> (!lp_solution_available && !relaxation_solution_available &&</div>
|
|
<div class="line"><a name="l00737"></a><span class="lineno"> 737</span>  !incomplete_solution_available) {</div>
|
|
<div class="line"><a name="l00738"></a><span class="lineno"> 738</span>  <span class="keywordflow">return</span> neighborhood;</div>
|
|
<div class="line"><a name="l00739"></a><span class="lineno"> 739</span>  }</div>
|
|
<div class="line"><a name="l00740"></a><span class="lineno"> 740</span>  </div>
|
|
<div class="line"><a name="l00741"></a><span class="lineno"> 741</span>  <a class="code" href="structoperations__research_1_1sat_1_1_r_i_n_s_neighborhood.html">RINSNeighborhood</a> rins_neighborhood;</div>
|
|
<div class="line"><a name="l00742"></a><span class="lineno"> 742</span>  <span class="comment">// Randomly select the type of relaxation if both lp and relaxation solutions</span></div>
|
|
<div class="line"><a name="l00743"></a><span class="lineno"> 743</span>  <span class="comment">// are available.</span></div>
|
|
<div class="line"><a name="l00744"></a><span class="lineno"> 744</span>  <span class="comment">// TODO(user): Tune the probability value for this.</span></div>
|
|
<div class="line"><a name="l00745"></a><span class="lineno"> 745</span>  std::bernoulli_distribution random_bool(0.5);</div>
|
|
<div class="line"><a name="l00746"></a><span class="lineno"> 746</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> use_lp_relaxation =</div>
|
|
<div class="line"><a name="l00747"></a><span class="lineno"> 747</span>  (lp_solution_available && relaxation_solution_available)</div>
|
|
<div class="line"><a name="l00748"></a><span class="lineno"> 748</span>  ? random_bool(random)</div>
|
|
<div class="line"><a name="l00749"></a><span class="lineno"> 749</span>  : lp_solution_available;</div>
|
|
<div class="line"><a name="l00750"></a><span class="lineno"> 750</span>  <span class="keywordflow">if</span> (use_lp_relaxation) {</div>
|
|
<div class="line"><a name="l00751"></a><span class="lineno"> 751</span>  rins_neighborhood =</div>
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|
<div class="line"><a name="l00752"></a><span class="lineno"> 752</span>  <a class="code" href="namespaceoperations__research_1_1sat.html#aeef49408603258c45118e0ca3394442c">GetRINSNeighborhood</a>(response_manager_,</div>
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|
<div class="line"><a name="l00753"></a><span class="lineno"> 753</span>  <span class="comment">/*relaxation_solutions=*/</span><span class="keyword">nullptr</span>, lp_solutions_,</div>
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|
<div class="line"><a name="l00754"></a><span class="lineno"> 754</span>  incomplete_solutions_, random);</div>
|
|
<div class="line"><a name="l00755"></a><span class="lineno"> 755</span>  neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#aaed94da4e4845ead42773bd4468a8899">source_info</a> =</div>
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|
<div class="line"><a name="l00756"></a><span class="lineno"> 756</span>  incomplete_solution_available ? <span class="stringliteral">"incomplete"</span> : <span class="stringliteral">"lp"</span>;</div>
|
|
<div class="line"><a name="l00757"></a><span class="lineno"> 757</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00758"></a><span class="lineno"> 758</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(relaxation_solution_available || incomplete_solution_available);</div>
|
|
<div class="line"><a name="l00759"></a><span class="lineno"> 759</span>  rins_neighborhood = <a class="code" href="namespaceoperations__research_1_1sat.html#aeef49408603258c45118e0ca3394442c">GetRINSNeighborhood</a>(</div>
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|
<div class="line"><a name="l00760"></a><span class="lineno"> 760</span>  response_manager_, relaxation_solutions_,</div>
|
|
<div class="line"><a name="l00761"></a><span class="lineno"> 761</span>  <span class="comment">/*lp_solutions=*/</span><span class="keyword">nullptr</span>, incomplete_solutions_, random);</div>
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|
<div class="line"><a name="l00762"></a><span class="lineno"> 762</span>  neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#aaed94da4e4845ead42773bd4468a8899">source_info</a> =</div>
|
|
<div class="line"><a name="l00763"></a><span class="lineno"> 763</span>  incomplete_solution_available ? <span class="stringliteral">"incomplete"</span> : <span class="stringliteral">"relaxation"</span>;</div>
|
|
<div class="line"><a name="l00764"></a><span class="lineno"> 764</span>  }</div>
|
|
<div class="line"><a name="l00765"></a><span class="lineno"> 765</span>  </div>
|
|
<div class="line"><a name="l00766"></a><span class="lineno"> 766</span>  <span class="keywordflow">if</span> (rins_neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_r_i_n_s_neighborhood.html#aaa53a8080fbfdbd1250127d79dc81313">fixed_vars</a>.empty() &&</div>
|
|
<div class="line"><a name="l00767"></a><span class="lineno"> 767</span>  rins_neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_r_i_n_s_neighborhood.html#a4630143a69a0e326a38901f8ba54ae45">reduced_domain_vars</a>.empty()) {</div>
|
|
<div class="line"><a name="l00768"></a><span class="lineno"> 768</span>  <span class="keywordflow">return</span> neighborhood;</div>
|
|
<div class="line"><a name="l00769"></a><span class="lineno"> 769</span>  }</div>
|
|
<div class="line"><a name="l00770"></a><span class="lineno"> 770</span>  </div>
|
|
<div class="line"><a name="l00771"></a><span class="lineno"> 771</span>  <span class="comment">// Fix the variables in the local model.</span></div>
|
|
<div class="line"><a name="l00772"></a><span class="lineno"> 772</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> std::pair</*model_var*/ int, /*value*/ int64> fixed_var :</div>
|
|
<div class="line"><a name="l00773"></a><span class="lineno"> 773</span>  rins_neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_r_i_n_s_neighborhood.html#aaa53a8080fbfdbd1250127d79dc81313">fixed_vars</a>) {</div>
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|
<div class="line"><a name="l00774"></a><span class="lineno"> 774</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> = fixed_var.first;</div>
|
|
<div class="line"><a name="l00775"></a><span class="lineno"> 775</span>  <span class="keyword">const</span> <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> <a class="code" href="demon__profiler_8cc.html#a21edc7ca4cc5802c8779d68556bc09cf">value</a> = fixed_var.second;</div>
|
|
<div class="line"><a name="l00776"></a><span class="lineno"> 776</span>  <span class="keywordflow">if</span> (<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> >= neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#ae580758c31ce30f5e52d9a732efd1267">cp_model</a>.variables_size()) <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l00777"></a><span class="lineno"> 777</span>  <span class="keywordflow">if</span> (!<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#acbd503b89d1dc3dd85dfa9e0e5058472">helper_</a>.<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a3536511769245b28739a715de62b0193">IsActive</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>)) <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l00778"></a><span class="lineno"> 778</span>  </div>
|
|
<div class="line"><a name="l00779"></a><span class="lineno"> 779</span>  <span class="keyword">const</span> <a class="code" href="classoperations__research_1_1_domain.html">Domain</a> domain =</div>
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|
<div class="line"><a name="l00780"></a><span class="lineno"> 780</span>  <a class="code" href="namespaceoperations__research_1_1sat.html#ab1240060466ba48a36a4b36379bce26a">ReadDomainFromProto</a>(neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#ae580758c31ce30f5e52d9a732efd1267">cp_model</a>.variables(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>));</div>
|
|
<div class="line"><a name="l00781"></a><span class="lineno"> 781</span>  <span class="keywordflow">if</span> (!domain.<a class="code" href="classoperations__research_1_1_domain.html#ab5228a93ebd3b866fc792ad8e5fe8fdc">Contains</a>(<a class="code" href="demon__profiler_8cc.html#a21edc7ca4cc5802c8779d68556bc09cf">value</a>)) {</div>
|
|
<div class="line"><a name="l00782"></a><span class="lineno"> 782</span>  <span class="comment">// TODO(user): Instead of aborting, pick the closest point in the domain?</span></div>
|
|
<div class="line"><a name="l00783"></a><span class="lineno"> 783</span>  <span class="keywordflow">return</span> neighborhood;</div>
|
|
<div class="line"><a name="l00784"></a><span class="lineno"> 784</span>  }</div>
|
|
<div class="line"><a name="l00785"></a><span class="lineno"> 785</span>  </div>
|
|
<div class="line"><a name="l00786"></a><span class="lineno"> 786</span>  neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#ae580758c31ce30f5e52d9a732efd1267">cp_model</a>.mutable_variables(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>)->clear_domain();</div>
|
|
<div class="line"><a name="l00787"></a><span class="lineno"> 787</span>  neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#ae580758c31ce30f5e52d9a732efd1267">cp_model</a>.mutable_variables(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>)->add_domain(<a class="code" href="demon__profiler_8cc.html#a21edc7ca4cc5802c8779d68556bc09cf">value</a>);</div>
|
|
<div class="line"><a name="l00788"></a><span class="lineno"> 788</span>  neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#ae580758c31ce30f5e52d9a732efd1267">cp_model</a>.mutable_variables(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>)->add_domain(<a class="code" href="demon__profiler_8cc.html#a21edc7ca4cc5802c8779d68556bc09cf">value</a>);</div>
|
|
<div class="line"><a name="l00789"></a><span class="lineno"> 789</span>  neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#a8e672808c179f95cf4c626aef798bbc7">is_reduced</a> = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00790"></a><span class="lineno"> 790</span>  }</div>
|
|
<div class="line"><a name="l00791"></a><span class="lineno"> 791</span>  </div>
|
|
<div class="line"><a name="l00792"></a><span class="lineno"> 792</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> std::pair<<span class="comment">/*model_var*/</span> <span class="keywordtype">int</span>, <span class="comment">/*domain*/</span> std::pair<int64, int64>></div>
|
|
<div class="line"><a name="l00793"></a><span class="lineno"> 793</span>  reduced_var : rins_neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_r_i_n_s_neighborhood.html#a4630143a69a0e326a38901f8ba54ae45">reduced_domain_vars</a>) {</div>
|
|
<div class="line"><a name="l00794"></a><span class="lineno"> 794</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> = reduced_var.first;</div>
|
|
<div class="line"><a name="l00795"></a><span class="lineno"> 795</span>  <span class="keyword">const</span> <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> lb = reduced_var.second.first;</div>
|
|
<div class="line"><a name="l00796"></a><span class="lineno"> 796</span>  <span class="keyword">const</span> <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> ub = reduced_var.second.second;</div>
|
|
<div class="line"><a name="l00797"></a><span class="lineno"> 797</span>  <span class="keywordflow">if</span> (<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> >= neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#ae580758c31ce30f5e52d9a732efd1267">cp_model</a>.variables_size()) <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l00798"></a><span class="lineno"> 798</span>  <span class="keywordflow">if</span> (!<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#acbd503b89d1dc3dd85dfa9e0e5058472">helper_</a>.<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a3536511769245b28739a715de62b0193">IsActive</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>)) <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l00799"></a><span class="lineno"> 799</span>  <a class="code" href="classoperations__research_1_1_domain.html">Domain</a> domain = <a class="code" href="namespaceoperations__research_1_1sat.html#ab1240060466ba48a36a4b36379bce26a">ReadDomainFromProto</a>(neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#ae580758c31ce30f5e52d9a732efd1267">cp_model</a>.variables(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>));</div>
|
|
<div class="line"><a name="l00800"></a><span class="lineno"> 800</span>  domain = domain.<a class="code" href="classoperations__research_1_1_domain.html#a835826c4c5129b74553042a357a721ff">IntersectionWith</a>(<a class="code" href="classoperations__research_1_1_domain.html">Domain</a>(lb, ub));</div>
|
|
<div class="line"><a name="l00801"></a><span class="lineno"> 801</span>  <span class="keywordflow">if</span> (domain.<a class="code" href="classoperations__research_1_1_domain.html#a8e12342fc420701fbffd97025421575a">IsEmpty</a>()) {</div>
|
|
<div class="line"><a name="l00802"></a><span class="lineno"> 802</span>  <span class="comment">// TODO(user): Instead of aborting, pick the closest point in the domain?</span></div>
|
|
<div class="line"><a name="l00803"></a><span class="lineno"> 803</span>  <span class="keywordflow">return</span> neighborhood;</div>
|
|
<div class="line"><a name="l00804"></a><span class="lineno"> 804</span>  }</div>
|
|
<div class="line"><a name="l00805"></a><span class="lineno"> 805</span>  <a class="code" href="namespaceoperations__research_1_1sat.html#a901c19b12842f8af153e588a689a90b5">FillDomainInProto</a>(domain, neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#ae580758c31ce30f5e52d9a732efd1267">cp_model</a>.mutable_variables(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>));</div>
|
|
<div class="line"><a name="l00806"></a><span class="lineno"> 806</span>  neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#a8e672808c179f95cf4c626aef798bbc7">is_reduced</a> = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00807"></a><span class="lineno"> 807</span>  }</div>
|
|
<div class="line"><a name="l00808"></a><span class="lineno"> 808</span>  neighborhood.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#a04d448b3000c058b67ad17541473a317">is_generated</a> = <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00809"></a><span class="lineno"> 809</span>  <span class="keywordflow">return</span> neighborhood;</div>
|
|
<div class="line"><a name="l00810"></a><span class="lineno"> 810</span> }</div>
|
|
<div class="line"><a name="l00811"></a><span class="lineno"> 811</span>  </div>
|
|
<div class="line"><a name="l00812"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_consecutive_constraints_relaxation_neighborhood_generator.html#a8afb8ece44037532a15303d3533bdced"> 812</a></span> <a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html">Neighborhood</a> <a class="code" href="classoperations__research_1_1sat_1_1_consecutive_constraints_relaxation_neighborhood_generator.html#a8afb8ece44037532a15303d3533bdced">ConsecutiveConstraintsRelaxationNeighborhoodGenerator::Generate</a>(</div>
|
|
<div class="line"><a name="l00813"></a><span class="lineno"> 813</span>  <span class="keyword">const</span> CpSolverResponse& initial_solution, <span class="keywordtype">double</span> difficulty,</div>
|
|
<div class="line"><a name="l00814"></a><span class="lineno"> 814</span>  absl::BitGenRef random) {</div>
|
|
<div class="line"><a name="l00815"></a><span class="lineno"> 815</span>  std::vector<int> removable_constraints;</div>
|
|
<div class="line"><a name="l00816"></a><span class="lineno"> 816</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> num_constraints = <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#acbd503b89d1dc3dd85dfa9e0e5058472">helper_</a>.<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a9f348ae7c22fbaa73b72bc976455ab14">ModelProto</a>().constraints_size();</div>
|
|
<div class="line"><a name="l00817"></a><span class="lineno"> 817</span>  removable_constraints.reserve(num_constraints);</div>
|
|
<div class="line"><a name="l00818"></a><span class="lineno"> 818</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> c = 0; c < num_constraints; ++c) {</div>
|
|
<div class="line"><a name="l00819"></a><span class="lineno"> 819</span>  <span class="comment">// Removing intervals is not easy because other constraint might require</span></div>
|
|
<div class="line"><a name="l00820"></a><span class="lineno"> 820</span>  <span class="comment">// them, so for now, we don't remove them.</span></div>
|
|
<div class="line"><a name="l00821"></a><span class="lineno"> 821</span>  <span class="keywordflow">if</span> (<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#acbd503b89d1dc3dd85dfa9e0e5058472">helper_</a>.<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a9f348ae7c22fbaa73b72bc976455ab14">ModelProto</a>().constraints(c).constraint_case() ==</div>
|
|
<div class="line"><a name="l00822"></a><span class="lineno"> 822</span>  ConstraintProto::kInterval) {</div>
|
|
<div class="line"><a name="l00823"></a><span class="lineno"> 823</span>  <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l00824"></a><span class="lineno"> 824</span>  }</div>
|
|
<div class="line"><a name="l00825"></a><span class="lineno"> 825</span>  removable_constraints.push_back(c);</div>
|
|
<div class="line"><a name="l00826"></a><span class="lineno"> 826</span>  }</div>
|
|
<div class="line"><a name="l00827"></a><span class="lineno"> 827</span>  </div>
|
|
<div class="line"><a name="l00828"></a><span class="lineno"> 828</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> target_size =</div>
|
|
<div class="line"><a name="l00829"></a><span class="lineno"> 829</span>  std::round((1.0 - <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#a43616719fac14b34582903ef03d114ac">difficulty</a>) * removable_constraints.size());</div>
|
|
<div class="line"><a name="l00830"></a><span class="lineno"> 830</span>  </div>
|
|
<div class="line"><a name="l00831"></a><span class="lineno"> 831</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> random_start_index =</div>
|
|
<div class="line"><a name="l00832"></a><span class="lineno"> 832</span>  absl::Uniform<int>(random, 0, removable_constraints.size());</div>
|
|
<div class="line"><a name="l00833"></a><span class="lineno"> 833</span>  std::vector<int> removed_constraints;</div>
|
|
<div class="line"><a name="l00834"></a><span class="lineno"> 834</span>  removed_constraints.reserve(target_size);</div>
|
|
<div class="line"><a name="l00835"></a><span class="lineno"> 835</span>  <span class="keywordtype">int</span> c = random_start_index;</div>
|
|
<div class="line"><a name="l00836"></a><span class="lineno"> 836</span>  <span class="keywordflow">while</span> (removed_constraints.size() < target_size) {</div>
|
|
<div class="line"><a name="l00837"></a><span class="lineno"> 837</span>  removed_constraints.push_back(removable_constraints[c]);</div>
|
|
<div class="line"><a name="l00838"></a><span class="lineno"> 838</span>  ++c;</div>
|
|
<div class="line"><a name="l00839"></a><span class="lineno"> 839</span>  <span class="keywordflow">if</span> (c == removable_constraints.size()) {</div>
|
|
<div class="line"><a name="l00840"></a><span class="lineno"> 840</span>  c = 0;</div>
|
|
<div class="line"><a name="l00841"></a><span class="lineno"> 841</span>  }</div>
|
|
<div class="line"><a name="l00842"></a><span class="lineno"> 842</span>  }</div>
|
|
<div class="line"><a name="l00843"></a><span class="lineno"> 843</span>  </div>
|
|
<div class="line"><a name="l00844"></a><span class="lineno"> 844</span>  <span class="keywordflow">return</span> <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#acbd503b89d1dc3dd85dfa9e0e5058472">helper_</a>.<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#ac0763b7b9e44b9b30e78b9dd4da8e98a">RemoveMarkedConstraints</a>(removed_constraints);</div>
|
|
<div class="line"><a name="l00845"></a><span class="lineno"> 845</span> }</div>
|
|
<div class="line"><a name="l00846"></a><span class="lineno"> 846</span>  </div>
|
|
<div class="line"><a name="l00847"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_weighted_random_relaxation_neighborhood_generator.html#a325f8d16767c3a3912e429d856171150"> 847</a></span> <a class="code" href="classoperations__research_1_1sat_1_1_weighted_random_relaxation_neighborhood_generator.html#a325f8d16767c3a3912e429d856171150">WeightedRandomRelaxationNeighborhoodGenerator::</a></div>
|
|
<div class="line"><a name="l00848"></a><span class="lineno"> 848</span> <a class="code" href="classoperations__research_1_1sat_1_1_weighted_random_relaxation_neighborhood_generator.html#a325f8d16767c3a3912e429d856171150"> WeightedRandomRelaxationNeighborhoodGenerator</a>(</div>
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<div class="line"><a name="l00849"></a><span class="lineno"> 849</span>  <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html">NeighborhoodGeneratorHelper</a> <span class="keyword">const</span>* helper, <span class="keyword">const</span> std::string& <a class="code" href="default__search_8cc.html#ac673bc430bdc3fdaa09f7becf98ef267">name</a>)</div>
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<div class="line"><a name="l00850"></a><span class="lineno"> 850</span>  : <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html">NeighborhoodGenerator</a>(<a class="code" href="default__search_8cc.html#ac673bc430bdc3fdaa09f7becf98ef267">name</a>, helper) {</div>
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<div class="line"><a name="l00851"></a><span class="lineno"> 851</span>  std::vector<int> removable_constraints;</div>
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<div class="line"><a name="l00852"></a><span class="lineno"> 852</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> num_constraints = <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#acbd503b89d1dc3dd85dfa9e0e5058472">helper_</a>.<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a9f348ae7c22fbaa73b72bc976455ab14">ModelProto</a>().constraints_size();</div>
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<div class="line"><a name="l00853"></a><span class="lineno"> 853</span>  constraint_weights_.reserve(num_constraints);</div>
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<div class="line"><a name="l00854"></a><span class="lineno"> 854</span>  <span class="comment">// TODO(user): Experiment with different starting weights.</span></div>
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<div class="line"><a name="l00855"></a><span class="lineno"> 855</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> c = 0; c < num_constraints; ++c) {</div>
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<div class="line"><a name="l00856"></a><span class="lineno"> 856</span>  <span class="keywordflow">switch</span> (<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#acbd503b89d1dc3dd85dfa9e0e5058472">helper_</a>.<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a9f348ae7c22fbaa73b72bc976455ab14">ModelProto</a>().constraints(c).constraint_case()) {</div>
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<div class="line"><a name="l00857"></a><span class="lineno"> 857</span>  <span class="keywordflow">case</span> ConstraintProto::kCumulative:</div>
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<div class="line"><a name="l00858"></a><span class="lineno"> 858</span>  <span class="keywordflow">case</span> ConstraintProto::kAllDiff:</div>
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<div class="line"><a name="l00859"></a><span class="lineno"> 859</span>  <span class="keywordflow">case</span> ConstraintProto::kElement:</div>
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<div class="line"><a name="l00860"></a><span class="lineno"> 860</span>  <span class="keywordflow">case</span> ConstraintProto::kRoutes:</div>
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<div class="line"><a name="l00861"></a><span class="lineno"> 861</span>  <span class="keywordflow">case</span> ConstraintProto::kCircuit:</div>
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<div class="line"><a name="l00862"></a><span class="lineno"> 862</span>  constraint_weights_.push_back(3.0);</div>
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<div class="line"><a name="l00863"></a><span class="lineno"> 863</span>  num_removable_constraints_++;</div>
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<div class="line"><a name="l00864"></a><span class="lineno"> 864</span>  <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00865"></a><span class="lineno"> 865</span>  <span class="keywordflow">case</span> ConstraintProto::kBoolOr:</div>
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<div class="line"><a name="l00866"></a><span class="lineno"> 866</span>  <span class="keywordflow">case</span> ConstraintProto::kBoolAnd:</div>
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<div class="line"><a name="l00867"></a><span class="lineno"> 867</span>  <span class="keywordflow">case</span> ConstraintProto::kBoolXor:</div>
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<div class="line"><a name="l00868"></a><span class="lineno"> 868</span>  <span class="keywordflow">case</span> ConstraintProto::kIntProd:</div>
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<div class="line"><a name="l00869"></a><span class="lineno"> 869</span>  <span class="keywordflow">case</span> ConstraintProto::kIntDiv:</div>
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<div class="line"><a name="l00870"></a><span class="lineno"> 870</span>  <span class="keywordflow">case</span> ConstraintProto::kIntMod:</div>
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<div class="line"><a name="l00871"></a><span class="lineno"> 871</span>  <span class="keywordflow">case</span> ConstraintProto::kIntMax:</div>
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<div class="line"><a name="l00872"></a><span class="lineno"> 872</span>  <span class="keywordflow">case</span> ConstraintProto::kLinMax:</div>
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<div class="line"><a name="l00873"></a><span class="lineno"> 873</span>  <span class="keywordflow">case</span> ConstraintProto::kIntMin:</div>
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<div class="line"><a name="l00874"></a><span class="lineno"> 874</span>  <span class="keywordflow">case</span> ConstraintProto::kLinMin:</div>
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<div class="line"><a name="l00875"></a><span class="lineno"> 875</span>  <span class="keywordflow">case</span> ConstraintProto::kNoOverlap:</div>
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|
<div class="line"><a name="l00876"></a><span class="lineno"> 876</span>  <span class="keywordflow">case</span> ConstraintProto::kNoOverlap2D:</div>
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<div class="line"><a name="l00877"></a><span class="lineno"> 877</span>  constraint_weights_.push_back(2.0);</div>
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|
<div class="line"><a name="l00878"></a><span class="lineno"> 878</span>  num_removable_constraints_++;</div>
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<div class="line"><a name="l00879"></a><span class="lineno"> 879</span>  <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00880"></a><span class="lineno"> 880</span>  <span class="keywordflow">case</span> ConstraintProto::kLinear:</div>
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|
<div class="line"><a name="l00881"></a><span class="lineno"> 881</span>  <span class="keywordflow">case</span> ConstraintProto::kTable:</div>
|
|
<div class="line"><a name="l00882"></a><span class="lineno"> 882</span>  <span class="keywordflow">case</span> ConstraintProto::kAutomaton:</div>
|
|
<div class="line"><a name="l00883"></a><span class="lineno"> 883</span>  <span class="keywordflow">case</span> ConstraintProto::kInverse:</div>
|
|
<div class="line"><a name="l00884"></a><span class="lineno"> 884</span>  <span class="keywordflow">case</span> ConstraintProto::kReservoir:</div>
|
|
<div class="line"><a name="l00885"></a><span class="lineno"> 885</span>  <span class="keywordflow">case</span> ConstraintProto::kAtMostOne:</div>
|
|
<div class="line"><a name="l00886"></a><span class="lineno"> 886</span>  <span class="keywordflow">case</span> ConstraintProto::kExactlyOne:</div>
|
|
<div class="line"><a name="l00887"></a><span class="lineno"> 887</span>  constraint_weights_.push_back(1.0);</div>
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|
<div class="line"><a name="l00888"></a><span class="lineno"> 888</span>  num_removable_constraints_++;</div>
|
|
<div class="line"><a name="l00889"></a><span class="lineno"> 889</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l00890"></a><span class="lineno"> 890</span>  <span class="keywordflow">case</span> ConstraintProto::CONSTRAINT_NOT_SET:</div>
|
|
<div class="line"><a name="l00891"></a><span class="lineno"> 891</span>  <span class="keywordflow">case</span> ConstraintProto::kInterval:</div>
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|
<div class="line"><a name="l00892"></a><span class="lineno"> 892</span>  <span class="comment">// Removing intervals is not easy because other constraint might require</span></div>
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|
<div class="line"><a name="l00893"></a><span class="lineno"> 893</span>  <span class="comment">// them, so for now, we don't remove them.</span></div>
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|
<div class="line"><a name="l00894"></a><span class="lineno"> 894</span>  constraint_weights_.push_back(0.0);</div>
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|
<div class="line"><a name="l00895"></a><span class="lineno"> 895</span>  <span class="keywordflow">break</span>;</div>
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|
<div class="line"><a name="l00896"></a><span class="lineno"> 896</span>  }</div>
|
|
<div class="line"><a name="l00897"></a><span class="lineno"> 897</span>  }</div>
|
|
<div class="line"><a name="l00898"></a><span class="lineno"> 898</span> }</div>
|
|
<div class="line"><a name="l00899"></a><span class="lineno"> 899</span>  </div>
|
|
<div class="line"><a name="l00900"></a><span class="lineno"> 900</span> <span class="keywordtype">void</span> WeightedRandomRelaxationNeighborhoodGenerator::</div>
|
|
<div class="line"><a name="l00901"></a><span class="lineno"> 901</span>  AdditionalProcessingOnSynchronize(<span class="keyword">const</span> SolveData& solve_data) {</div>
|
|
<div class="line"><a name="l00902"></a><span class="lineno"> 902</span>  <span class="keyword">const</span> IntegerValue best_objective_improvement =</div>
|
|
<div class="line"><a name="l00903"></a><span class="lineno"> 903</span>  solve_data.new_objective_bound - solve_data.initial_best_objective_bound;</div>
|
|
<div class="line"><a name="l00904"></a><span class="lineno"> 904</span>  </div>
|
|
<div class="line"><a name="l00905"></a><span class="lineno"> 905</span>  <span class="keyword">const</span> std::vector<int>& removed_constraints =</div>
|
|
<div class="line"><a name="l00906"></a><span class="lineno"> 906</span>  removed_constraints_[solve_data.neighborhood_id];</div>
|
|
<div class="line"><a name="l00907"></a><span class="lineno"> 907</span>  </div>
|
|
<div class="line"><a name="l00908"></a><span class="lineno"> 908</span>  <span class="comment">// Heuristic: We change the weights of the removed constraints if the</span></div>
|
|
<div class="line"><a name="l00909"></a><span class="lineno"> 909</span>  <span class="comment">// neighborhood is solved (status is OPTIMAL or INFEASIBLE) or we observe an</span></div>
|
|
<div class="line"><a name="l00910"></a><span class="lineno"> 910</span>  <span class="comment">// improvement in objective bounds. Otherwise we assume that the</span></div>
|
|
<div class="line"><a name="l00911"></a><span class="lineno"> 911</span>  <span class="comment">// difficulty/time wasn't right for us to record feedbacks.</span></div>
|
|
<div class="line"><a name="l00912"></a><span class="lineno"> 912</span>  <span class="comment">//</span></div>
|
|
<div class="line"><a name="l00913"></a><span class="lineno"> 913</span>  <span class="comment">// If the objective bounds are improved, we bump up the weights. If the</span></div>
|
|
<div class="line"><a name="l00914"></a><span class="lineno"> 914</span>  <span class="comment">// objective bounds are worse and the problem status is OPTIMAL, we bump down</span></div>
|
|
<div class="line"><a name="l00915"></a><span class="lineno"> 915</span>  <span class="comment">// the weights. Otherwise if the new objective bounds are same as current</span></div>
|
|
<div class="line"><a name="l00916"></a><span class="lineno"> 916</span>  <span class="comment">// bounds (which happens a lot on some instances), we do not update the</span></div>
|
|
<div class="line"><a name="l00917"></a><span class="lineno"> 917</span>  <span class="comment">// weights as we do not have a clear signal whether the constraints removed</span></div>
|
|
<div class="line"><a name="l00918"></a><span class="lineno"> 918</span>  <span class="comment">// were good choices or not.</span></div>
|
|
<div class="line"><a name="l00919"></a><span class="lineno"> 919</span>  <span class="comment">// TODO(user): We can improve this heuristic with more experiments.</span></div>
|
|
<div class="line"><a name="l00920"></a><span class="lineno"> 920</span>  <span class="keywordflow">if</span> (best_objective_improvement > 0) {</div>
|
|
<div class="line"><a name="l00921"></a><span class="lineno"> 921</span>  <span class="comment">// Bump up the weights of all removed constraints.</span></div>
|
|
<div class="line"><a name="l00922"></a><span class="lineno"> 922</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> c : removed_constraints) {</div>
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|
<div class="line"><a name="l00923"></a><span class="lineno"> 923</span>  <span class="keywordflow">if</span> (constraint_weights_[c] <= 90.0) {</div>
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|
<div class="line"><a name="l00924"></a><span class="lineno"> 924</span>  constraint_weights_[c] += 10.0;</div>
|
|
<div class="line"><a name="l00925"></a><span class="lineno"> 925</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00926"></a><span class="lineno"> 926</span>  constraint_weights_[c] = 100.0;</div>
|
|
<div class="line"><a name="l00927"></a><span class="lineno"> 927</span>  }</div>
|
|
<div class="line"><a name="l00928"></a><span class="lineno"> 928</span>  }</div>
|
|
<div class="line"><a name="l00929"></a><span class="lineno"> 929</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (solve_data.status == <a class="code" href="namespaceoperations__research_1_1sat.html#aedc4ddb96acc28481c09828d2e016815a2579881e7c83261bc21bafb5a5c92cad">CpSolverStatus::OPTIMAL</a> &&</div>
|
|
<div class="line"><a name="l00930"></a><span class="lineno"> 930</span>  best_objective_improvement < 0) {</div>
|
|
<div class="line"><a name="l00931"></a><span class="lineno"> 931</span>  <span class="comment">// Bump down the weights of all removed constraints.</span></div>
|
|
<div class="line"><a name="l00932"></a><span class="lineno"> 932</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> c : removed_constraints) {</div>
|
|
<div class="line"><a name="l00933"></a><span class="lineno"> 933</span>  <span class="keywordflow">if</span> (constraint_weights_[c] > 0.5) {</div>
|
|
<div class="line"><a name="l00934"></a><span class="lineno"> 934</span>  constraint_weights_[c] -= 0.5;</div>
|
|
<div class="line"><a name="l00935"></a><span class="lineno"> 935</span>  }</div>
|
|
<div class="line"><a name="l00936"></a><span class="lineno"> 936</span>  }</div>
|
|
<div class="line"><a name="l00937"></a><span class="lineno"> 937</span>  }</div>
|
|
<div class="line"><a name="l00938"></a><span class="lineno"> 938</span>  removed_constraints_.erase(solve_data.neighborhood_id);</div>
|
|
<div class="line"><a name="l00939"></a><span class="lineno"> 939</span> }</div>
|
|
<div class="line"><a name="l00940"></a><span class="lineno"> 940</span>  </div>
|
|
<div class="line"><a name="l00941"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_weighted_random_relaxation_neighborhood_generator.html#a8afb8ece44037532a15303d3533bdced"> 941</a></span> <a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html">Neighborhood</a> <a class="code" href="classoperations__research_1_1sat_1_1_weighted_random_relaxation_neighborhood_generator.html#a8afb8ece44037532a15303d3533bdced">WeightedRandomRelaxationNeighborhoodGenerator::Generate</a>(</div>
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|
<div class="line"><a name="l00942"></a><span class="lineno"> 942</span>  <span class="keyword">const</span> CpSolverResponse& initial_solution, <span class="keywordtype">double</span> difficulty,</div>
|
|
<div class="line"><a name="l00943"></a><span class="lineno"> 943</span>  absl::BitGenRef random) {</div>
|
|
<div class="line"><a name="l00944"></a><span class="lineno"> 944</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> target_size =</div>
|
|
<div class="line"><a name="l00945"></a><span class="lineno"> 945</span>  std::round((1.0 - <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#a43616719fac14b34582903ef03d114ac">difficulty</a>) * num_removable_constraints_);</div>
|
|
<div class="line"><a name="l00946"></a><span class="lineno"> 946</span>  </div>
|
|
<div class="line"><a name="l00947"></a><span class="lineno"> 947</span>  std::vector<int> removed_constraints;</div>
|
|
<div class="line"><a name="l00948"></a><span class="lineno"> 948</span>  </div>
|
|
<div class="line"><a name="l00949"></a><span class="lineno"> 949</span>  <span class="comment">// Generate a random number between (0,1) = u[i] and use score[i] =</span></div>
|
|
<div class="line"><a name="l00950"></a><span class="lineno"> 950</span>  <span class="comment">// u[i]^(1/w[i]) and then select top k items with largest scores.</span></div>
|
|
<div class="line"><a name="l00951"></a><span class="lineno"> 951</span>  <span class="comment">// Reference: https://utopia.duth.gr/~pefraimi/research/data/2007EncOfAlg.pdf</span></div>
|
|
<div class="line"><a name="l00952"></a><span class="lineno"> 952</span>  std::vector<std::pair<double, int>> constraint_removal_scores;</div>
|
|
<div class="line"><a name="l00953"></a><span class="lineno"> 953</span>  std::uniform_real_distribution<double> random_var(0.0, 1.0);</div>
|
|
<div class="line"><a name="l00954"></a><span class="lineno"> 954</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> c = 0; c < constraint_weights_.size(); ++c) {</div>
|
|
<div class="line"><a name="l00955"></a><span class="lineno"> 955</span>  <span class="keywordflow">if</span> (constraint_weights_[c] <= 0) <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l00956"></a><span class="lineno"> 956</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> u = random_var(random);</div>
|
|
<div class="line"><a name="l00957"></a><span class="lineno"> 957</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> score = std::pow(u, (1 / constraint_weights_[c]));</div>
|
|
<div class="line"><a name="l00958"></a><span class="lineno"> 958</span>  constraint_removal_scores.push_back({score, c});</div>
|
|
<div class="line"><a name="l00959"></a><span class="lineno"> 959</span>  }</div>
|
|
<div class="line"><a name="l00960"></a><span class="lineno"> 960</span>  std::sort(constraint_removal_scores.rbegin(),</div>
|
|
<div class="line"><a name="l00961"></a><span class="lineno"> 961</span>  constraint_removal_scores.rend());</div>
|
|
<div class="line"><a name="l00962"></a><span class="lineno"> 962</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < target_size; ++i) {</div>
|
|
<div class="line"><a name="l00963"></a><span class="lineno"> 963</span>  removed_constraints.push_back(constraint_removal_scores[i].second);</div>
|
|
<div class="line"><a name="l00964"></a><span class="lineno"> 964</span>  }</div>
|
|
<div class="line"><a name="l00965"></a><span class="lineno"> 965</span>  </div>
|
|
<div class="line"><a name="l00966"></a><span class="lineno"> 966</span>  <a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html">Neighborhood</a> result = <a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#acbd503b89d1dc3dd85dfa9e0e5058472">helper_</a>.<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#ac0763b7b9e44b9b30e78b9dd4da8e98a">RemoveMarkedConstraints</a>(removed_constraints);</div>
|
|
<div class="line"><a name="l00967"></a><span class="lineno"> 967</span>  absl::MutexLock mutex_lock(&<a class="code" href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#a9e87d3b4ec76aff1ff99016ce9a8dd73">mutex_</a>);</div>
|
|
<div class="line"><a name="l00968"></a><span class="lineno"> 968</span>  result.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#a309a18d48fc959a6d664a9573ccb4971">id</a> = next_available_id_;</div>
|
|
<div class="line"><a name="l00969"></a><span class="lineno"> 969</span>  next_available_id_++;</div>
|
|
<div class="line"><a name="l00970"></a><span class="lineno"> 970</span>  removed_constraints_.insert({result.<a class="code" href="structoperations__research_1_1sat_1_1_neighborhood.html#a309a18d48fc959a6d664a9573ccb4971">id</a>, removed_constraints});</div>
|
|
<div class="line"><a name="l00971"></a><span class="lineno"> 971</span>  <span class="keywordflow">return</span> result;</div>
|
|
<div class="line"><a name="l00972"></a><span class="lineno"> 972</span> }</div>
|
|
<div class="line"><a name="l00973"></a><span class="lineno"> 973</span>  </div>
|
|
<div class="line"><a name="l00974"></a><span class="lineno"> 974</span> } <span class="comment">// namespace sat</span></div>
|
|
<div class="line"><a name="l00975"></a><span class="lineno"> 975</span> } <span class="comment">// namespace operations_research</span></div>
|
|
<div class="ttc" id="aalldiff__cst_8cc_html_a021e695f54a13bd809c34b2f4ca87c37"><div class="ttname"><a href="alldiff__cst_8cc.html#a021e695f54a13bd809c34b2f4ca87c37">min</a></div><div class="ttdeci">int64 min</div><div class="ttdef"><b>Definition:</b> <a href="alldiff__cst_8cc_source.html#l00138">alldiff_cst.cc:138</a></div></div>
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<div class="ttc" id="aalldiff__cst_8cc_html_a9d0c202d5fdd62f4fa2c613339ff168a"><div class="ttname"><a href="alldiff__cst_8cc.html#a9d0c202d5fdd62f4fa2c613339ff168a">max</a></div><div class="ttdeci">int64 max</div><div class="ttdef"><b>Definition:</b> <a href="alldiff__cst_8cc_source.html#l00139">alldiff_cst.cc:139</a></div></div>
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<div class="ttc" id="abase_2logging_8h_html_a3e1cfef60e774a81f30eaddf26a3a274"><div class="ttname"><a href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a></div><div class="ttdeci">#define CHECK(condition)</div><div class="ttdef"><b>Definition:</b> <a href="base_2logging_8h_source.html#l00495">base/logging.h:495</a></div></div>
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<div class="ttc" id="abase_2logging_8h_html_a4bd2e815ca2f702a4b6aa744b1ff3b82"><div class="ttname"><a href="base_2logging_8h.html#a4bd2e815ca2f702a4b6aa744b1ff3b82">CHECK_LT</a></div><div class="ttdeci">#define CHECK_LT(val1, val2)</div><div class="ttdef"><b>Definition:</b> <a href="base_2logging_8h_source.html#l00700">base/logging.h:700</a></div></div>
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<div class="ttc" id="abase_2logging_8h_html_a7c0ce053b28d53aa4eaf3eb7fb71663b"><div class="ttname"><a href="base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b">CHECK_EQ</a></div><div class="ttdeci">#define CHECK_EQ(val1, val2)</div><div class="ttdef"><b>Definition:</b> <a href="base_2logging_8h_source.html#l00697">base/logging.h:697</a></div></div>
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<div class="ttc" id="abase_2logging_8h_html_a7cc25402ecd7591b4c39934dd656b1f9"><div class="ttname"><a href="base_2logging_8h.html#a7cc25402ecd7591b4c39934dd656b1f9">CHECK_GE</a></div><div class="ttdeci">#define CHECK_GE(val1, val2)</div><div class="ttdef"><b>Definition:</b> <a href="base_2logging_8h_source.html#l00701">base/logging.h:701</a></div></div>
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<div class="ttc" id="abase_2logging_8h_html_a7e03ec13560fa94a8fea569960d7efc6"><div class="ttname"><a href="base_2logging_8h.html#a7e03ec13560fa94a8fea569960d7efc6">CHECK_GT</a></div><div class="ttdeci">#define CHECK_GT(val1, val2)</div><div class="ttdef"><b>Definition:</b> <a href="base_2logging_8h_source.html#l00702">base/logging.h:702</a></div></div>
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<div class="ttc" id="abase_2logging_8h_html_aae2dc65d9ea248d54bf39daa986dd295"><div class="ttname"><a href="base_2logging_8h.html#aae2dc65d9ea248d54bf39daa986dd295">DCHECK_GE</a></div><div class="ttdeci">#define DCHECK_GE(val1, val2)</div><div class="ttdef"><b>Definition:</b> <a href="base_2logging_8h_source.html#l00889">base/logging.h:889</a></div></div>
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<div class="ttc" id="abase_2logging_8h_html_ae17f8119c108cf3070bad3449c7e0006"><div class="ttname"><a href="base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006">DCHECK</a></div><div class="ttdeci">#define DCHECK(condition)</div><div class="ttdef"><b>Definition:</b> <a href="base_2logging_8h_source.html#l00884">base/logging.h:884</a></div></div>
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<div class="ttc" id="abase_2logging_8h_html_ae4db23f10f5d4aad6d735f5a74cd6f8c"><div class="ttname"><a href="base_2logging_8h.html#ae4db23f10f5d4aad6d735f5a74cd6f8c">CHECK_LE</a></div><div class="ttdeci">#define CHECK_LE(val1, val2)</div><div class="ttdef"><b>Definition:</b> <a href="base_2logging_8h_source.html#l00699">base/logging.h:699</a></div></div>
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<div class="ttc" id="abase_2logging_8h_html_afcaa7cadd41741bb855c2ada1d2ef927"><div class="ttname"><a href="base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927">VLOG</a></div><div class="ttdeci">#define VLOG(verboselevel)</div><div class="ttdef"><b>Definition:</b> <a href="base_2logging_8h_source.html#l00978">base/logging.h:978</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_adaptive_parameter_value_html_af9bf551154d37f48132472bd0f6dd848"><div class="ttname"><a href="classoperations__research_1_1_adaptive_parameter_value.html#af9bf551154d37f48132472bd0f6dd848">operations_research::AdaptiveParameterValue::Update</a></div><div class="ttdeci">void Update(int num_decreases, int num_increases)</div><div class="ttdef"><b>Definition:</b> <a href="adaptative__parameter__value_8h_source.html#l00058">adaptative_parameter_value.h:58</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_domain_html"><div class="ttname"><a href="classoperations__research_1_1_domain.html">operations_research::Domain</a></div><div class="ttdoc">We call domain any subset of Int64 = [kint64min, kint64max].</div><div class="ttdef"><b>Definition:</b> <a href="sorted__interval__list_8h_source.html#l00081">sorted_interval_list.h:81</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_domain_html_a835826c4c5129b74553042a357a721ff"><div class="ttname"><a href="classoperations__research_1_1_domain.html#a835826c4c5129b74553042a357a721ff">operations_research::Domain::IntersectionWith</a></div><div class="ttdeci">Domain IntersectionWith(const Domain &domain) const</div><div class="ttdoc">Returns the intersection of D and domain.</div><div class="ttdef"><b>Definition:</b> <a href="sorted__interval__list_8cc_source.html#l00283">sorted_interval_list.cc:283</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_domain_html_a8e12342fc420701fbffd97025421575a"><div class="ttname"><a href="classoperations__research_1_1_domain.html#a8e12342fc420701fbffd97025421575a">operations_research::Domain::IsEmpty</a></div><div class="ttdeci">bool IsEmpty() const</div><div class="ttdoc">Returns true if this is the empty set.</div><div class="ttdef"><b>Definition:</b> <a href="sorted__interval__list_8cc_source.html#l00191">sorted_interval_list.cc:191</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_domain_html_ab5228a93ebd3b866fc792ad8e5fe8fdc"><div class="ttname"><a href="classoperations__research_1_1_domain.html#ab5228a93ebd3b866fc792ad8e5fe8fdc">operations_research::Domain::Contains</a></div><div class="ttdeci">bool Contains(int64 value) const</div><div class="ttdoc">Returns true iff value is in Domain.</div><div class="ttdef"><b>Definition:</b> <a href="sorted__interval__list_8cc_source.html#l00222">sorted_interval_list.cc:222</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_shared_time_limit_html"><div class="ttname"><a href="classoperations__research_1_1_shared_time_limit.html">operations_research::SharedTimeLimit</a></div><div class="ttdef"><b>Definition:</b> <a href="time__limit_8h_source.html#l00338">time_limit.h:338</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_consecutive_constraints_relaxation_neighborhood_generator_html_a8afb8ece44037532a15303d3533bdced"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_consecutive_constraints_relaxation_neighborhood_generator.html#a8afb8ece44037532a15303d3533bdced">operations_research::sat::ConsecutiveConstraintsRelaxationNeighborhoodGenerator::Generate</a></div><div class="ttdeci">Neighborhood Generate(const CpSolverResponse &initial_solution, double difficulty, absl::BitGenRef random) final</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__lns_8cc_source.html#l00812">cp_model_lns.cc:812</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_constraint_graph_neighborhood_generator_html_a8afb8ece44037532a15303d3533bdced"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_constraint_graph_neighborhood_generator.html#a8afb8ece44037532a15303d3533bdced">operations_research::sat::ConstraintGraphNeighborhoodGenerator::Generate</a></div><div class="ttdeci">Neighborhood Generate(const CpSolverResponse &initial_solution, double difficulty, absl::BitGenRef random) final</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__lns_8cc_source.html#l00505">cp_model_lns.cc:505</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_neighborhood_generator_helper_html"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html">operations_research::sat::NeighborhoodGeneratorHelper</a></div><div class="ttdef"><b>Definition:</b> <a href="cp__model__lns_8h_source.html#l00064">cp_model_lns.h:64</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_neighborhood_generator_helper_html_a08c018489eb0c4c309f144780ebb8cce"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a08c018489eb0c4c309f144780ebb8cce">operations_research::sat::NeighborhoodGeneratorHelper::NeighborhoodGeneratorHelper</a></div><div class="ttdeci">NeighborhoodGeneratorHelper(CpModelProto const *model_proto, SatParameters const *parameters, SharedResponseManager *shared_response, SharedTimeLimit *shared_time_limit=nullptr, SharedBoundsManager *shared_bounds=nullptr)</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__lns_8cc_source.html#l00032">cp_model_lns.cc:32</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_neighborhood_generator_helper_html_a0e31a4150ae965379d0f05d51a0c1673"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a0e31a4150ae965379d0f05d51a0c1673">operations_research::sat::NeighborhoodGeneratorHelper::shared_response</a></div><div class="ttdeci">const SharedResponseManager & shared_response() const</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__lns_8h_source.html#l00144">cp_model_lns.h:144</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_neighborhood_generator_helper_html_a126969fed21452a041a7014fb86ff105"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a126969fed21452a041a7014fb86ff105">operations_research::sat::NeighborhoodGeneratorHelper::VarToConstraint</a></div><div class="ttdeci">const std::vector< std::vector< int > > & VarToConstraint() const</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__lns_8h_source.html#l00113">cp_model_lns.h:113</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_neighborhood_generator_helper_html_a15cb168917371b5fb2d17b00e640de63"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a15cb168917371b5fb2d17b00e640de63">operations_research::sat::NeighborhoodGeneratorHelper::FullNeighborhood</a></div><div class="ttdeci">Neighborhood FullNeighborhood() const</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__lns_8cc_source.html#l00188">cp_model_lns.cc:188</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_neighborhood_generator_helper_html_a307d968091a3bddbbce257cca9b79fbb"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a307d968091a3bddbbce257cca9b79fbb">operations_research::sat::NeighborhoodGeneratorHelper::FixAllVariables</a></div><div class="ttdeci">Neighborhood FixAllVariables(const CpSolverResponse &initial_solution) const</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__lns_8cc_source.html#l00292">cp_model_lns.cc:292</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_neighborhood_generator_helper_html_a3536511769245b28739a715de62b0193"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a3536511769245b28739a715de62b0193">operations_research::sat::NeighborhoodGeneratorHelper::IsActive</a></div><div class="ttdeci">bool IsActive(int var) const</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__lns_8cc_source.html#l00178">cp_model_lns.cc:178</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_neighborhood_generator_helper_html_a586408c556a6e1732ac80d8df9cdee5b"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a586408c556a6e1732ac80d8df9cdee5b">operations_research::sat::NeighborhoodGeneratorHelper::FixGivenVariables</a></div><div class="ttdeci">Neighborhood FixGivenVariables(const CpSolverResponse &initial_solution, const std::vector< int > &variables_to_fix) const</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__lns_8cc_source.html#l00229">cp_model_lns.cc:229</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_neighborhood_generator_helper_html_a6aef4ca16709a75231ee1691c306c641"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a6aef4ca16709a75231ee1691c306c641">operations_research::sat::NeighborhoodGeneratorHelper::TypeToConstraints</a></div><div class="ttdeci">const absl::Span< const int > TypeToConstraints(ConstraintProto::ConstraintCase type) const</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__lns_8h_source.html#l00118">cp_model_lns.h:118</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_neighborhood_generator_helper_html_a8735c6fd1459361aa6696a77f8042bf1"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a8735c6fd1459361aa6696a77f8042bf1">operations_research::sat::NeighborhoodGeneratorHelper::RelaxGivenVariables</a></div><div class="ttdeci">Neighborhood RelaxGivenVariables(const CpSolverResponse &initial_solution, const std::vector< int > &relaxed_variables) const</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__lns_8cc_source.html#l00278">cp_model_lns.cc:278</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_neighborhood_generator_helper_html_a8b0ea5233e98dcd85233c074a034fd05"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a8b0ea5233e98dcd85233c074a034fd05">operations_research::sat::NeighborhoodGeneratorHelper::GetActiveIntervals</a></div><div class="ttdeci">std::vector< int > GetActiveIntervals(const CpSolverResponse &initial_solution) const</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__lns_8cc_source.html#l00198">cp_model_lns.cc:198</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_neighborhood_generator_helper_html_a9cbca4684dddbad2d60b4dbcb1f90aba"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a9cbca4684dddbad2d60b4dbcb1f90aba">operations_research::sat::NeighborhoodGeneratorHelper::ActiveVariables</a></div><div class="ttdeci">const std::vector< int > & ActiveVariables() const</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__lns_8h_source.html#l00106">cp_model_lns.h:106</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_neighborhood_generator_helper_html_a9f348ae7c22fbaa73b72bc976455ab14"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#a9f348ae7c22fbaa73b72bc976455ab14">operations_research::sat::NeighborhoodGeneratorHelper::ModelProto</a></div><div class="ttdeci">const CpModelProto & ModelProto() const</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__lns_8h_source.html#l00133">cp_model_lns.h:133</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_neighborhood_generator_helper_html_ac0763b7b9e44b9b30e78b9dd4da8e98a"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#ac0763b7b9e44b9b30e78b9dd4da8e98a">operations_research::sat::NeighborhoodGeneratorHelper::RemoveMarkedConstraints</a></div><div class="ttdeci">Neighborhood RemoveMarkedConstraints(const std::vector< int > &constraints_to_remove) const</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__lns_8cc_source.html#l00263">cp_model_lns.cc:263</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_neighborhood_generator_helper_html_ac3e42ca3d76c8f2ce836a85688768672"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#ac3e42ca3d76c8f2ce836a85688768672">operations_research::sat::NeighborhoodGeneratorHelper::ConstraintToVar</a></div><div class="ttdeci">const std::vector< std::vector< int > > & ConstraintToVar() const</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__lns_8h_source.html#l00110">cp_model_lns.h:110</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_neighborhood_generator_helper_html_afa21407ae134806ac4337d0b2473b210"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_neighborhood_generator_helper.html#afa21407ae134806ac4337d0b2473b210">operations_research::sat::NeighborhoodGeneratorHelper::Synchronize</a></div><div class="ttdeci">void Synchronize() override</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__lns_8cc_source.html#l00052">cp_model_lns.cc:52</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_neighborhood_generator_html"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_neighborhood_generator.html">operations_research::sat::NeighborhoodGenerator</a></div><div class="ttdef"><b>Definition:</b> <a href="cp__model__lns_8h_source.html#l00189">cp_model_lns.h:189</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_neighborhood_generator_html_a0c8b86bd60b4fc70cb653a12d50c2ce8"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#a0c8b86bd60b4fc70cb653a12d50c2ce8">operations_research::sat::NeighborhoodGenerator::IsRelaxationGenerator</a></div><div class="ttdeci">virtual bool IsRelaxationGenerator() const</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__lns_8h_source.html#l00218">cp_model_lns.h:218</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_neighborhood_generator_html_a34c45a33de4f8a713e99bbf97d8d08d6"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#a34c45a33de4f8a713e99bbf97d8d08d6">operations_research::sat::NeighborhoodGenerator::ReadyToGenerate</a></div><div class="ttdeci">virtual bool ReadyToGenerate() const</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__lns_8cc_source.html#l00301">cp_model_lns.cc:301</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_neighborhood_generator_html_a43616719fac14b34582903ef03d114ac"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#a43616719fac14b34582903ef03d114ac">operations_research::sat::NeighborhoodGenerator::difficulty</a></div><div class="ttdeci">double difficulty() const</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__lns_8h_source.html#l00304">cp_model_lns.h:304</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_neighborhood_generator_html_a8c5aac83a5aea832261e7a5ab425e54b"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#a8c5aac83a5aea832261e7a5ab425e54b">operations_research::sat::NeighborhoodGenerator::GetUCBScore</a></div><div class="ttdeci">double GetUCBScore(int64 total_num_calls) const</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__lns_8cc_source.html#l00305">cp_model_lns.cc:305</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_neighborhood_generator_html_a9ca5b99b3550503ca7bad8418e133156"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#a9ca5b99b3550503ca7bad8418e133156">operations_research::sat::NeighborhoodGenerator::Synchronize</a></div><div class="ttdeci">void Synchronize()</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__lns_8cc_source.html#l00312">cp_model_lns.cc:312</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_neighborhood_generator_html_a9e87d3b4ec76aff1ff99016ce9a8dd73"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#a9e87d3b4ec76aff1ff99016ce9a8dd73">operations_research::sat::NeighborhoodGenerator::mutex_</a></div><div class="ttdeci">absl::Mutex mutex_</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__lns_8h_source.html#l00329">cp_model_lns.h:329</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_neighborhood_generator_html_ac497558c5257914ba8ffdc4e95e59c21"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#ac497558c5257914ba8ffdc4e95e59c21">operations_research::sat::NeighborhoodGenerator::AdditionalProcessingOnSynchronize</a></div><div class="ttdeci">virtual void AdditionalProcessingOnSynchronize(const SolveData &solve_data)</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__lns_8h_source.html#l00325">cp_model_lns.h:325</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_neighborhood_generator_html_acbd503b89d1dc3dd85dfa9e0e5058472"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_neighborhood_generator.html#acbd503b89d1dc3dd85dfa9e0e5058472">operations_research::sat::NeighborhoodGenerator::helper_</a></div><div class="ttdeci">const NeighborhoodGeneratorHelper & helper_</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__lns_8h_source.html#l00328">cp_model_lns.h:328</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_relaxation_induced_neighborhood_generator_html_a18bd97b50e3170dabf1f537e19695054"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_relaxation_induced_neighborhood_generator.html#a18bd97b50e3170dabf1f537e19695054">operations_research::sat::RelaxationInducedNeighborhoodGenerator::ReadyToGenerate</a></div><div class="ttdeci">bool ReadyToGenerate() const override</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__lns_8cc_source.html#l00695">cp_model_lns.cc:695</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_relaxation_induced_neighborhood_generator_html_a8afb8ece44037532a15303d3533bdced"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_relaxation_induced_neighborhood_generator.html#a8afb8ece44037532a15303d3533bdced">operations_research::sat::RelaxationInducedNeighborhoodGenerator::Generate</a></div><div class="ttdeci">Neighborhood Generate(const CpSolverResponse &initial_solution, double difficulty, absl::BitGenRef random) final</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__lns_8cc_source.html#l00719">cp_model_lns.cc:719</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_scheduling_neighborhood_generator_html_a8afb8ece44037532a15303d3533bdced"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_scheduling_neighborhood_generator.html#a8afb8ece44037532a15303d3533bdced">operations_research::sat::SchedulingNeighborhoodGenerator::Generate</a></div><div class="ttdeci">Neighborhood Generate(const CpSolverResponse &initial_solution, double difficulty, absl::BitGenRef random) final</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__lns_8cc_source.html#l00658">cp_model_lns.cc:658</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_scheduling_time_window_neighborhood_generator_html_a8afb8ece44037532a15303d3533bdced"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_scheduling_time_window_neighborhood_generator.html#a8afb8ece44037532a15303d3533bdced">operations_research::sat::SchedulingTimeWindowNeighborhoodGenerator::Generate</a></div><div class="ttdeci">Neighborhood Generate(const CpSolverResponse &initial_solution, double difficulty, absl::BitGenRef random) final</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__lns_8cc_source.html#l00669">cp_model_lns.cc:669</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_shared_bounds_manager_html"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_shared_bounds_manager.html">operations_research::sat::SharedBoundsManager</a></div><div class="ttdef"><b>Definition:</b> <a href="synchronization_8h_source.html#l00356">synchronization.h:356</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_shared_bounds_manager_html_a7aa28ef33d58d24db19943fb77fcecbd"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_shared_bounds_manager.html#a7aa28ef33d58d24db19943fb77fcecbd">operations_research::sat::SharedBoundsManager::GetChangedBounds</a></div><div class="ttdeci">void GetChangedBounds(int id, std::vector< int > *variables, std::vector< int64 > *new_lower_bounds, std::vector< int64 > *new_upper_bounds)</div><div class="ttdef"><b>Definition:</b> <a href="synchronization_8cc_source.html#l00707">synchronization.cc:707</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_shared_bounds_manager_html_af90af356f66a9a677d8d76be3fdd7356"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_shared_bounds_manager.html#af90af356f66a9a677d8d76be3fdd7356">operations_research::sat::SharedBoundsManager::RegisterNewId</a></div><div class="ttdeci">int RegisterNewId()</div><div class="ttdef"><b>Definition:</b> <a href="synchronization_8cc_source.html#l00690">synchronization.cc:690</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_shared_incomplete_solution_manager_html_afad444837cdc77c60e71abb9294753b9"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_shared_incomplete_solution_manager.html#afad444837cdc77c60e71abb9294753b9">operations_research::sat::SharedIncompleteSolutionManager::HasNewSolution</a></div><div class="ttdeci">bool HasNewSolution() const</div><div class="ttdef"><b>Definition:</b> <a href="synchronization_8cc_source.html#l00080">synchronization.cc:80</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_shared_response_manager_html"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_shared_response_manager.html">operations_research::sat::SharedResponseManager</a></div><div class="ttdef"><b>Definition:</b> <a href="synchronization_8h_source.html#l00166">synchronization.h:166</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_shared_response_manager_html_a3dffd827657e9ba58a4e786e4c352abc"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_shared_response_manager.html#a3dffd827657e9ba58a4e786e4c352abc">operations_research::sat::SharedResponseManager::SolutionsRepository</a></div><div class="ttdeci">const SharedSolutionRepository< int64 > & SolutionsRepository() const</div><div class="ttdef"><b>Definition:</b> <a href="synchronization_8h_source.html#l00276">synchronization.h:276</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_shared_solution_repository_html_a6d2b6f7951b60c786fdbefcbe7c3571f"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_shared_solution_repository.html#a6d2b6f7951b60c786fdbefcbe7c3571f">operations_research::sat::SharedSolutionRepository::NumSolutions</a></div><div class="ttdeci">int NumSolutions() const</div><div class="ttdef"><b>Definition:</b> <a href="synchronization_8h_source.html#l00404">synchronization.h:404</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_simple_constraint_neighborhood_generator_html_a8afb8ece44037532a15303d3533bdced"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_simple_constraint_neighborhood_generator.html#a8afb8ece44037532a15303d3533bdced">operations_research::sat::SimpleConstraintNeighborhoodGenerator::Generate</a></div><div class="ttdeci">Neighborhood Generate(const CpSolverResponse &initial_solution, double difficulty, absl::BitGenRef random) final</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__lns_8cc_source.html#l00413">cp_model_lns.cc:413</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_simple_neighborhood_generator_html_a8afb8ece44037532a15303d3533bdced"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_simple_neighborhood_generator.html#a8afb8ece44037532a15303d3533bdced">operations_research::sat::SimpleNeighborhoodGenerator::Generate</a></div><div class="ttdeci">Neighborhood Generate(const CpSolverResponse &initial_solution, double difficulty, absl::BitGenRef random) final</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__lns_8cc_source.html#l00405">cp_model_lns.cc:405</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_sub_solver_html"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_sub_solver.html">operations_research::sat::SubSolver</a></div><div class="ttdef"><b>Definition:</b> <a href="subsolver_8h_source.html#l00041">subsolver.h:41</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_variable_graph_neighborhood_generator_html_a8afb8ece44037532a15303d3533bdced"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_variable_graph_neighborhood_generator.html#a8afb8ece44037532a15303d3533bdced">operations_research::sat::VariableGraphNeighborhoodGenerator::Generate</a></div><div class="ttdeci">Neighborhood Generate(const CpSolverResponse &initial_solution, double difficulty, absl::BitGenRef random) final</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__lns_8cc_source.html#l00454">cp_model_lns.cc:454</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_weighted_random_relaxation_neighborhood_generator_html_a325f8d16767c3a3912e429d856171150"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_weighted_random_relaxation_neighborhood_generator.html#a325f8d16767c3a3912e429d856171150">operations_research::sat::WeightedRandomRelaxationNeighborhoodGenerator::WeightedRandomRelaxationNeighborhoodGenerator</a></div><div class="ttdeci">WeightedRandomRelaxationNeighborhoodGenerator(NeighborhoodGeneratorHelper const *helper, const std::string &name)</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__lns_8cc_source.html#l00847">cp_model_lns.cc:848</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_weighted_random_relaxation_neighborhood_generator_html_a8afb8ece44037532a15303d3533bdced"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_weighted_random_relaxation_neighborhood_generator.html#a8afb8ece44037532a15303d3533bdced">operations_research::sat::WeightedRandomRelaxationNeighborhoodGenerator::Generate</a></div><div class="ttdeci">Neighborhood Generate(const CpSolverResponse &initial_solution, double difficulty, absl::BitGenRef random) final</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__lns_8cc_source.html#l00941">cp_model_lns.cc:941</a></div></div>
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<div class="ttc" id="acp__model_8pb_8h_html"><div class="ttname"><a href="cp__model_8pb_8h.html">cp_model.pb.h</a></div></div>
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<div class="ttc" id="acp__model__fz__solver_8cc_html_a10a1eab179b472c030bdc2a2efef7219"><div class="ttname"><a href="cp__model__fz__solver_8cc.html#a10a1eab179b472c030bdc2a2efef7219">parameters</a></div><div class="ttdeci">SatParameters parameters</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__fz__solver_8cc_source.html#l00108">cp_model_fz_solver.cc:108</a></div></div>
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<div class="ttc" id="acp__model__lns_8h_html"><div class="ttname"><a href="cp__model__lns_8h.html">cp_model_lns.h</a></div></div>
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<div class="ttc" id="acp__model__loader_8h_html"><div class="ttname"><a href="cp__model__loader_8h.html">cp_model_loader.h</a></div></div>
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<div class="ttc" id="acp__model__solver_8cc_html_a6ac76d8a372013f67c4973012948ec84"><div class="ttname"><a href="cp__model__solver_8cc.html#a6ac76d8a372013f67c4973012948ec84">model_proto</a></div><div class="ttdeci">CpModelProto const * model_proto</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__solver_8cc_source.html#l02114">cp_model_solver.cc:2114</a></div></div>
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<div class="ttc" id="acp__model__utils_8h_html"><div class="ttname"><a href="cp__model__utils_8h.html">cp_model_utils.h</a></div></div>
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<div class="ttc" id="adefault__search_8cc_html_ac673bc430bdc3fdaa09f7becf98ef267"><div class="ttname"><a href="default__search_8cc.html#ac673bc430bdc3fdaa09f7becf98ef267">name</a></div><div class="ttdeci">const std::string name</div><div class="ttdef"><b>Definition:</b> <a href="default__search_8cc_source.html#l00808">default_search.cc:808</a></div></div>
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<div class="ttc" id="ademon__profiler_8cc_html_a05da18ca9c7b657a4a6ea24e07c9b695"><div class="ttname"><a href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a></div><div class="ttdeci">const Constraint * ct</div><div class="ttdef"><b>Definition:</b> <a href="demon__profiler_8cc_source.html#l00042">demon_profiler.cc:42</a></div></div>
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<div class="ttc" id="ademon__profiler_8cc_html_a21edc7ca4cc5802c8779d68556bc09cf"><div class="ttname"><a href="demon__profiler_8cc.html#a21edc7ca4cc5802c8779d68556bc09cf">value</a></div><div class="ttdeci">int64 value</div><div class="ttdef"><b>Definition:</b> <a href="demon__profiler_8cc_source.html#l00043">demon_profiler.cc:43</a></div></div>
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<div class="ttc" id="aexpr__array_8cc_html_a472a99923cbe11ae7b5a5d157d9ad465"><div class="ttname"><a href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a></div><div class="ttdeci">IntVar * var</div><div class="ttdef"><b>Definition:</b> <a href="expr__array_8cc_source.html#l01858">expr_array.cc:1858</a></div></div>
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<div class="ttc" id="ainteger_8h_html"><div class="ttname"><a href="integer_8h.html">integer.h</a></div></div>
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<div class="ttc" id="aintegral__types_8h_html_a7cde0074dfd288f2d70c0e035dacb28a"><div class="ttname"><a href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a></div><div class="ttdeci">int64_t int64</div><div class="ttdef"><b>Definition:</b> <a href="integral__types_8h_source.html#l00034">integral_types.h:34</a></div></div>
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<div class="ttc" id="aintegral__types_8h_html_af458164b470cbba416d5ed579e00ff60"><div class="ttname"><a href="integral__types_8h.html#af458164b470cbba416d5ed579e00ff60">kint64min</a></div><div class="ttdeci">static const int64 kint64min</div><div class="ttdef"><b>Definition:</b> <a href="integral__types_8h_source.html#l00052">integral_types.h:52</a></div></div>
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<div class="ttc" id="alinear__programming__constraint_8h_html"><div class="ttname"><a href="linear__programming__constraint_8h.html">linear_programming_constraint.h</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_a1d467595ed8fe5b85dc95328ee1c2770"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#a1d467595ed8fe5b85dc95328ee1c2770">operations_research::sat::UsedVariables</a></div><div class="ttdeci">std::vector< int > UsedVariables(const ConstraintProto &ct)</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__utils_8cc_source.html#l00459">cp_model_utils.cc:459</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_a217338425de4389014563f1f24331713"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#a217338425de4389014563f1f24331713">operations_research::sat::RefIsPositive</a></div><div class="ttdeci">bool RefIsPositive(int ref)</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__utils_8h_source.html#l00034">cp_model_utils.h:34</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_a217ba4c51953c701a68d6572d79801f1"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#a217ba4c51953c701a68d6572d79801f1">operations_research::sat::UsedIntervals</a></div><div class="ttdeci">std::vector< int > UsedIntervals(const ConstraintProto &ct)</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__utils_8cc_source.html#l00474">cp_model_utils.cc:474</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_a901c19b12842f8af153e588a689a90b5"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#a901c19b12842f8af153e588a689a90b5">operations_research::sat::FillDomainInProto</a></div><div class="ttdeci">void FillDomainInProto(const Domain &domain, ProtoWithDomain *proto)</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__utils_8h_source.html#l00091">cp_model_utils.h:91</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_ab1240060466ba48a36a4b36379bce26a"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#ab1240060466ba48a36a4b36379bce26a">operations_research::sat::ReadDomainFromProto</a></div><div class="ttdeci">Domain ReadDomainFromProto(const ProtoWithDomain &proto)</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__utils_8h_source.html#l00102">cp_model_utils.h:102</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_acdbc8ad33149d45a6e6fcd8b72fd68ed"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">operations_research::sat::PositiveRef</a></div><div class="ttdeci">int PositiveRef(int ref)</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__utils_8h_source.html#l00033">cp_model_utils.h:33</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_ad57491858f7814f0a03845022b6de35e"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#ad57491858f7814f0a03845022b6de35e">operations_research::sat::GenerateSchedulingNeighborhoodForRelaxation</a></div><div class="ttdeci">Neighborhood GenerateSchedulingNeighborhoodForRelaxation(const absl::Span< const int > intervals_to_relax, const CpSolverResponse &initial_solution, const NeighborhoodGeneratorHelper &helper)</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__lns_8cc_source.html#l00560">cp_model_lns.cc:560</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_aedc4ddb96acc28481c09828d2e016815a2579881e7c83261bc21bafb5a5c92cad"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#aedc4ddb96acc28481c09828d2e016815a2579881e7c83261bc21bafb5a5c92cad">operations_research::sat::OPTIMAL</a></div><div class="ttdeci">@ OPTIMAL</div><div class="ttdef"><b>Definition:</b> <a href="cp__model_8pb_8h_source.html#l00239">cp_model.pb.h:239</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_aedc4ddb96acc28481c09828d2e016815a2884fa43446c0cbc9c7a9b74d41d7483"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#aedc4ddb96acc28481c09828d2e016815a2884fa43446c0cbc9c7a9b74d41d7483">operations_research::sat::INFEASIBLE</a></div><div class="ttdeci">@ INFEASIBLE</div><div class="ttdef"><b>Definition:</b> <a href="cp__model_8pb_8h_source.html#l00238">cp_model.pb.h:238</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_aeef49408603258c45118e0ca3394442c"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#aeef49408603258c45118e0ca3394442c">operations_research::sat::GetRINSNeighborhood</a></div><div class="ttdeci">RINSNeighborhood GetRINSNeighborhood(const SharedResponseManager *response_manager, const SharedRelaxationSolutionRepository *relaxation_solutions, const SharedLPSolutionRepository *lp_solutions, SharedIncompleteSolutionManager *incomplete_solutions, absl::BitGenRef random)</div><div class="ttdef"><b>Definition:</b> <a href="rins_8cc_source.html#l00099">rins.cc:99</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_html_a228fe84d99348c2b62bb4f70a6371d9b"><div class="ttname"><a href="namespaceoperations__research.html#a228fe84d99348c2b62bb4f70a6371d9b">operations_research::CapSub</a></div><div class="ttdeci">int64 CapSub(int64 x, int64 y)</div><div class="ttdef"><b>Definition:</b> <a href="saturated__arithmetic_8h_source.html#l00154">saturated_arithmetic.h:154</a></div></div>
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<div class="ttc" id="aresource_8cc_html_af92a8383a05fdf586a52263d358f5ada"><div class="ttname"><a href="resource_8cc.html#af92a8383a05fdf586a52263d358f5ada">interval</a></div><div class="ttdeci">IntervalVar * interval</div><div class="ttdef"><b>Definition:</b> <a href="resource_8cc_source.html#l00098">resource.cc:98</a></div></div>
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<div class="ttc" id="arins_8h_html"><div class="ttname"><a href="rins_8h.html">rins.h</a></div></div>
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<div class="ttc" id="asaturated__arithmetic_8h_html"><div class="ttname"><a href="saturated__arithmetic_8h.html">saturated_arithmetic.h</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_neighborhood_generator_1_1_solve_data_html"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_neighborhood_generator_1_1_solve_data.html">operations_research::sat::NeighborhoodGenerator::SolveData</a></div><div class="ttdef"><b>Definition:</b> <a href="cp__model__lns_8h_source.html#l00231">cp_model_lns.h:231</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_neighborhood_html"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_neighborhood.html">operations_research::sat::Neighborhood</a></div><div class="ttdef"><b>Definition:</b> <a href="cp__model__lns_8h_source.html#l00034">cp_model_lns.h:34</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_neighborhood_html_a04d448b3000c058b67ad17541473a317"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_neighborhood.html#a04d448b3000c058b67ad17541473a317">operations_research::sat::Neighborhood::is_generated</a></div><div class="ttdeci">bool is_generated</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__lns_8h_source.html#l00036">cp_model_lns.h:36</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_neighborhood_html_a309a18d48fc959a6d664a9573ccb4971"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_neighborhood.html#a309a18d48fc959a6d664a9573ccb4971">operations_research::sat::Neighborhood::id</a></div><div class="ttdeci">int64 id</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__lns_8h_source.html#l00051">cp_model_lns.h:51</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_neighborhood_html_a8e672808c179f95cf4c626aef798bbc7"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_neighborhood.html#a8e672808c179f95cf4c626aef798bbc7">operations_research::sat::Neighborhood::is_reduced</a></div><div class="ttdeci">bool is_reduced</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__lns_8h_source.html#l00041">cp_model_lns.h:41</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_neighborhood_html_aaed94da4e4845ead42773bd4468a8899"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_neighborhood.html#aaed94da4e4845ead42773bd4468a8899">operations_research::sat::Neighborhood::source_info</a></div><div class="ttdeci">std::string source_info</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__lns_8h_source.html#l00055">cp_model_lns.h:55</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_neighborhood_html_ae580758c31ce30f5e52d9a732efd1267"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_neighborhood.html#ae580758c31ce30f5e52d9a732efd1267">operations_research::sat::Neighborhood::cp_model</a></div><div class="ttdeci">CpModelProto cp_model</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__lns_8h_source.html#l00045">cp_model_lns.h:45</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_r_i_n_s_neighborhood_html"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_r_i_n_s_neighborhood.html">operations_research::sat::RINSNeighborhood</a></div><div class="ttdef"><b>Definition:</b> <a href="rins_8h_source.html#l00056">rins.h:56</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_r_i_n_s_neighborhood_html_a4630143a69a0e326a38901f8ba54ae45"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_r_i_n_s_neighborhood.html#a4630143a69a0e326a38901f8ba54ae45">operations_research::sat::RINSNeighborhood::reduced_domain_vars</a></div><div class="ttdeci">std::vector< std::pair< int, std::pair< int64, int64 > > > reduced_domain_vars</div><div class="ttdef"><b>Definition:</b> <a href="rins_8h_source.html#l00060">rins.h:60</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_r_i_n_s_neighborhood_html_aaa53a8080fbfdbd1250127d79dc81313"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_r_i_n_s_neighborhood.html#aaa53a8080fbfdbd1250127d79dc81313">operations_research::sat::RINSNeighborhood::fixed_vars</a></div><div class="ttdeci">std::vector< std::pair< int, int64 > > fixed_vars</div><div class="ttdef"><b>Definition:</b> <a href="rins_8h_source.html#l00058">rins.h:58</a></div></div>
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<div class="ttc" id="asynchronization_8h_html"><div class="ttname"><a href="synchronization_8h.html">synchronization.h</a></div></div>
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<div class="ttc" id="avlog__is__on_8h_html_a956152cad330225654d128f35c00efce"><div class="ttname"><a href="vlog__is__on_8h.html#a956152cad330225654d128f35c00efce">VLOG_IS_ON</a></div><div class="ttdeci">#define VLOG_IS_ON(verboselevel)</div><div class="ttdef"><b>Definition:</b> <a href="vlog__is__on_8h_source.html#l00041">vlog_is_on.h:41</a></div></div>
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