919 lines
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919 lines
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<a href="sat_2table_8cc.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="comment">// Copyright 2010-2021 Google LLC</span></div>
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<div class="line"><a id="l00002" 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 id="l00003" 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 id="l00004" 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 id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="comment">//</span></div>
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<div class="line"><a id="l00006" 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 id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="comment">//</span></div>
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<div class="line"><a id="l00008" 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 id="l00009" 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 id="l00010" 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 id="l00011" 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 id="l00012" 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 id="l00013" name="l00013"></a><span class="lineno"> 13</span> </div>
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<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="preprocessor">#include "<a class="code" href="table_8h.html">ortools/sat/table.h</a>"</span></div>
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<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span> </div>
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<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span><span class="preprocessor">#include <algorithm></span></div>
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<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="preprocessor">#include <cstdint></span></div>
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<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span><span class="preprocessor">#include <limits></span></div>
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<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span><span class="preprocessor">#include <memory></span></div>
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<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="preprocessor">#include <set></span></div>
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<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span><span class="preprocessor">#include <utility></span></div>
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<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span> </div>
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<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span><span class="preprocessor">#include "absl/container/flat_hash_map.h"</span></div>
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<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span><span class="preprocessor">#include "absl/container/flat_hash_set.h"</span></div>
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<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span><span class="preprocessor">#include "absl/strings/str_cat.h"</span></div>
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<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span><span class="preprocessor">#include "absl/strings/str_join.h"</span></div>
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<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span><span class="preprocessor">#include "<a class="code" href="int__type_8h.html">ortools/base/int_type.h</a>"</span></div>
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<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span><span class="preprocessor">#include "<a class="code" href="base_2logging_8h.html">ortools/base/logging.h</a>"</span></div>
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<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span><span class="preprocessor">#include "<a class="code" href="map__util_8h.html">ortools/base/map_util.h</a>"</span></div>
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<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span><span class="preprocessor">#include "<a class="code" href="stl__util_8h.html">ortools/base/stl_util.h</a>"</span></div>
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<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span><span class="preprocessor">#include "<a class="code" href="sat__base_8h.html">ortools/sat/sat_base.h</a>"</span></div>
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<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span><span class="preprocessor">#include "<a class="code" href="sat__solver_8h.html">ortools/sat/sat_solver.h</a>"</span></div>
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<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span><span class="preprocessor">#include "<a class="code" href="sat_2util_8h.html">ortools/sat/util.h</a>"</span></div>
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<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span><span class="preprocessor">#include "<a class="code" href="sorted__interval__list_8h.html">ortools/util/sorted_interval_list.h</a>"</span></div>
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<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span> </div>
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<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceoperations__research.html">operations_research</a> {</div>
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<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span><span class="keyword">namespace </span>sat {</div>
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<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> </div>
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<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span><span class="keyword">namespace </span>{</div>
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<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> </div>
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<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span><span class="comment">// Converts the vector representation returned by FullDomainEncoding() to a map.</span></div>
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<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span>absl::flat_hash_map<IntegerValue, Literal> GetEncoding(IntegerVariable <a class="code hl_variable" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>,</div>
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<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> Model* <a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>) {</div>
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<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> absl::flat_hash_map<IntegerValue, Literal> encoding;</div>
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<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> IntegerEncoder* encoder = <a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->GetOrCreate<IntegerEncoder>();</div>
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<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">auto</span>& entry : encoder->FullDomainEncoding(<a class="code hl_variable" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>)) {</div>
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<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> encoding[entry.value] = entry.literal;</div>
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<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> }</div>
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<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> <span class="keywordflow">return</span> encoding;</div>
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<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span>}</div>
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<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> </div>
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<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span><span class="comment">// Add the implications and clauses to link one column of a table to the Literal</span></div>
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<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span><span class="comment">// controling if the lines are possible or not. The column has the given values,</span></div>
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<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span><span class="comment">// and the Literal of the column variable can be retrieved using the encoding</span></div>
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<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span><span class="comment">// map. Thew tuples_with_any vector provides a list of line_literals that will</span></div>
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<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span><span class="comment">// support any value.</span></div>
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<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span><span class="keywordtype">void</span> ProcessOneColumn(</div>
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<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> <span class="keyword">const</span> std::vector<Literal>& line_literals,</div>
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<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> <span class="keyword">const</span> std::vector<IntegerValue>& values,</div>
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<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> <span class="keyword">const</span> absl::flat_hash_map<IntegerValue, Literal>& encoding,</div>
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<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> <span class="keyword">const</span> std::vector<Literal>& tuples_with_any, Model* <a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>) {</div>
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<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> <a class="code hl_define" href="base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b">CHECK_EQ</a>(line_literals.size(), values.size());</div>
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<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> std::vector<std::pair<IntegerValue, Literal>> pairs;</div>
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<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> </div>
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<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> <span class="comment">// If a value is false (i.e not possible), then the tuple with this value</span></div>
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<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> <span class="comment">// is false too (i.e not possible). Conversely, if the tuple is selected,</span></div>
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<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> <span class="comment">// the value must be selected.</span></div>
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<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < values.size(); ++i) {</div>
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<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> <span class="keyword">const</span> IntegerValue v = values[i];</div>
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<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> <span class="keywordflow">if</span> (!encoding.contains(v)) {</div>
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<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> <a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->Add(<a class="code hl_function" href="namespaceoperations__research_1_1sat.html#a37093a0df3cca500d5f58b1d5482bdc6">ClauseConstraint</a>({line_literals[i].Negated()}));</div>
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<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> } <span class="keywordflow">else</span> {</div>
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<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> pairs.emplace_back(v, line_literals[i]);</div>
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<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> <a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->Add(<a class="code hl_function" href="namespaceoperations__research_1_1sat.html#a6e056f4efb99b080ae5bdb7267339f59">Implication</a>(line_literals[i], <a class="code hl_function" href="namespacegtl.html#a73f41ac11336b94768fdd41594153d59">gtl::FindOrDie</a>(encoding, v)));</div>
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<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> }</div>
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<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> }</div>
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<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> </div>
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<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> <span class="comment">// Regroup literal with the same value and add for each the clause: If all the</span></div>
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<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> <span class="comment">// tuples containing a value are false, then this value must be false too.</span></div>
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<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> std::sort(pairs.begin(), pairs.end());</div>
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<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> std::vector<Literal> clause = tuples_with_any;</div>
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<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < pairs.size();) {</div>
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<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> <span class="comment">// We always keep the tuples_with_any at the beginning of the clause.</span></div>
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<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span> clause.resize(tuples_with_any.size());</div>
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<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> </div>
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<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> <span class="keyword">const</span> IntegerValue <a class="code hl_variable" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a> = pairs[i].first;</div>
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<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span> <span class="keywordflow">for</span> (; i < pairs.size() && pairs[i].first == <a class="code hl_variable" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>; ++i) {</div>
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<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> clause.push_back(pairs[i].second);</div>
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<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> }</div>
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<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span> </div>
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<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> <span class="comment">// And the "value" literal and load the clause.</span></div>
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<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> clause.push_back(<a class="code hl_function" href="namespacegtl.html#a73f41ac11336b94768fdd41594153d59">gtl::FindOrDie</a>(encoding, <a class="code hl_variable" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>).Negated());</div>
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<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> <a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->Add(<a class="code hl_function" href="namespaceoperations__research_1_1sat.html#a37093a0df3cca500d5f58b1d5482bdc6">ClauseConstraint</a>(clause));</div>
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<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> }</div>
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<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span>}</div>
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<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span> </div>
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<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span><span class="comment">// Simpler encoding for table constraints with 2 variables.</span></div>
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<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span><span class="keywordtype">void</span> AddSizeTwoTable(</div>
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<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> absl::Span<const IntegerVariable> vars,</div>
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<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span> <span class="keyword">const</span> std::vector<std::vector<int64_t>>& tuples,</div>
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<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span> <span class="keyword">const</span> std::vector<absl::flat_hash_set<int64_t>>& values_per_var,</div>
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<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> Model* <a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>) {</div>
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<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> <span class="keyword">const</span> <span class="keywordtype">int</span> n = vars.size();</div>
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<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span> <a class="code hl_define" href="base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b">CHECK_EQ</a>(n, 2);</div>
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<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span> IntegerTrail* <span class="keyword">const</span> integer_trail = <a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->GetOrCreate<IntegerTrail>();</div>
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<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span> </div>
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<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span> std::vector<absl::flat_hash_map<IntegerValue, Literal>> encodings(n);</div>
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<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < n; ++i) {</div>
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<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span> <span class="keyword">const</span> std::vector<int64_t> reached_values(values_per_var[i].begin(),</div>
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<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span> values_per_var[i].end());</div>
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<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span> integer_trail->UpdateInitialDomain(vars[i],</div>
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<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span> <a class="code hl_function" href="classoperations__research_1_1_domain.html#ac2d88de67793063ad5f5e923ffd1c0eb">Domain::FromValues</a>(reached_values));</div>
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<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span> <span class="keywordflow">if</span> (values_per_var.size() > 1) {</div>
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<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span> <a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->Add(<a class="code hl_function" href="namespaceoperations__research_1_1sat.html#ae282013f2321b5817fd61ad9e705e446">FullyEncodeVariable</a>(vars[i]));</div>
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<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span> encodings[i] = GetEncoding(vars[i], <a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>);</div>
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<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"> 116</span> }</div>
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<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span> }</div>
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<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span> </div>
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<div class="line"><a id="l00119" name="l00119"></a><span class="lineno"> 119</span> <span class="comment">// One variable is fixed. Propagation is complete.</span></div>
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<div class="line"><a id="l00120" name="l00120"></a><span class="lineno"> 120</span> <span class="keywordflow">if</span> (values_per_var[0].size() == 1 || values_per_var[1].size() == 1) <span class="keywordflow">return</span>;</div>
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<div class="line"><a id="l00121" name="l00121"></a><span class="lineno"> 121</span> </div>
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<div class="line"><a id="l00122" name="l00122"></a><span class="lineno"> 122</span> std::map<LiteralIndex, std::vector<Literal>> left_to_right;</div>
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<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span> std::map<LiteralIndex, std::vector<Literal>> right_to_left;</div>
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<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span> </div>
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<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span> <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">auto</span>& tuple : tuples) {</div>
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<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"> 126</span> <span class="keyword">const</span> IntegerValue left_value(tuple[0]);</div>
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<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span> <span class="keyword">const</span> IntegerValue right_value(tuple[1]);</div>
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<div class="line"><a id="l00128" name="l00128"></a><span class="lineno"> 128</span> <span class="keywordflow">if</span> (!encodings[0].contains(left_value) ||</div>
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<div class="line"><a id="l00129" name="l00129"></a><span class="lineno"> 129</span> !encodings[1].contains(right_value)) {</div>
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<div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span> <span class="keywordflow">continue</span>;</div>
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<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"> 131</span> }</div>
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<div class="line"><a id="l00132" name="l00132"></a><span class="lineno"> 132</span> </div>
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<div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span> <span class="keyword">const</span> Literal left = <a class="code hl_function" href="namespacegtl.html#a73f41ac11336b94768fdd41594153d59">gtl::FindOrDie</a>(encodings[0], left_value);</div>
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<div class="line"><a id="l00134" name="l00134"></a><span class="lineno"> 134</span> <span class="keyword">const</span> Literal right = <a class="code hl_function" href="namespacegtl.html#a73f41ac11336b94768fdd41594153d59">gtl::FindOrDie</a>(encodings[1], right_value);</div>
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<div class="line"><a id="l00135" name="l00135"></a><span class="lineno"> 135</span> left_to_right[left.Index()].push_back(right);</div>
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<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"> 136</span> right_to_left[right.Index()].push_back(left);</div>
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<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span> }</div>
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<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span> </div>
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<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"> 139</span> <span class="keywordtype">int</span> num_implications = 0;</div>
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<div class="line"><a id="l00140" name="l00140"></a><span class="lineno"> 140</span> <span class="keywordtype">int</span> num_clause_added = 0;</div>
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<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span> <span class="keywordtype">int</span> num_large_clause_added = 0;</div>
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<div class="line"><a id="l00142" name="l00142"></a><span class="lineno"> 142</span> std::vector<Literal> clause;</div>
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<div class="line"><a id="l00143" name="l00143"></a><span class="lineno"> 143</span> <span class="keyword">auto</span> add_support_constraint =</div>
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<div class="line"><a id="l00144" name="l00144"></a><span class="lineno"> 144</span> [<a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>, &num_clause_added, &num_large_clause_added, &num_implications,</div>
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<div class="line"><a id="l00145" name="l00145"></a><span class="lineno"> 145</span> &clause](LiteralIndex lit, <span class="keyword">const</span> std::vector<Literal>& supports,</div>
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<div class="line"><a id="l00146" name="l00146"></a><span class="lineno"> 146</span> <span class="keywordtype">int</span> max_support_size) {</div>
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<div class="line"><a id="l00147" name="l00147"></a><span class="lineno"> 147</span> <span class="keywordflow">if</span> (supports.size() == max_support_size) <span class="keywordflow">return</span>;</div>
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<div class="line"><a id="l00148" name="l00148"></a><span class="lineno"> 148</span> <span class="keywordflow">if</span> (supports.size() == 1) {</div>
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<div class="line"><a id="l00149" name="l00149"></a><span class="lineno"> 149</span> <a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->Add(<a class="code hl_function" href="namespaceoperations__research_1_1sat.html#a6e056f4efb99b080ae5bdb7267339f59">Implication</a>(Literal(lit), supports.front()));</div>
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<div class="line"><a id="l00150" name="l00150"></a><span class="lineno"> 150</span> num_implications++;</div>
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<div class="line"><a id="l00151" name="l00151"></a><span class="lineno"> 151</span> } <span class="keywordflow">else</span> {</div>
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<div class="line"><a id="l00152" name="l00152"></a><span class="lineno"> 152</span> clause.assign(supports.begin(), supports.end());</div>
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<div class="line"><a id="l00153" name="l00153"></a><span class="lineno"> 153</span> clause.push_back(Literal(lit).Negated());</div>
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<div class="line"><a id="l00154" name="l00154"></a><span class="lineno"> 154</span> <a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->Add(<a class="code hl_function" href="namespaceoperations__research_1_1sat.html#a37093a0df3cca500d5f58b1d5482bdc6">ClauseConstraint</a>(clause));</div>
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<div class="line"><a id="l00155" name="l00155"></a><span class="lineno"> 155</span> num_clause_added++;</div>
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<div class="line"><a id="l00156" name="l00156"></a><span class="lineno"> 156</span> <span class="keywordflow">if</span> (supports.size() > max_support_size / 2) {</div>
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<div class="line"><a id="l00157" name="l00157"></a><span class="lineno"> 157</span> num_large_clause_added++;</div>
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<div class="line"><a id="l00158" name="l00158"></a><span class="lineno"> 158</span> }</div>
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<div class="line"><a id="l00159" name="l00159"></a><span class="lineno"> 159</span> }</div>
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<div class="line"><a id="l00160" name="l00160"></a><span class="lineno"> 160</span> };</div>
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<div class="line"><a id="l00161" name="l00161"></a><span class="lineno"> 161</span> </div>
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<div class="line"><a id="l00162" name="l00162"></a><span class="lineno"> 162</span> <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">auto</span>& it : left_to_right) {</div>
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<div class="line"><a id="l00163" name="l00163"></a><span class="lineno"> 163</span> add_support_constraint(it.first, it.second, values_per_var[1].size());</div>
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<div class="line"><a id="l00164" name="l00164"></a><span class="lineno"> 164</span> }</div>
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<div class="line"><a id="l00165" name="l00165"></a><span class="lineno"> 165</span> <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">auto</span>& it : right_to_left) {</div>
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<div class="line"><a id="l00166" name="l00166"></a><span class="lineno"> 166</span> add_support_constraint(it.first, it.second, values_per_var[0].size());</div>
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<div class="line"><a id="l00167" name="l00167"></a><span class="lineno"> 167</span> }</div>
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<div class="line"><a id="l00168" name="l00168"></a><span class="lineno"> 168</span> <a class="code hl_define" href="base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927">VLOG</a>(2) << <span class="stringliteral">"Table: 2 variables, "</span> << tuples.size() << <span class="stringliteral">" tuples encoded using "</span></div>
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<div class="line"><a id="l00169" name="l00169"></a><span class="lineno"> 169</span> << num_clause_added << <span class="stringliteral">" clauses, "</span> << num_large_clause_added</div>
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<div class="line"><a id="l00170" name="l00170"></a><span class="lineno"> 170</span> << <span class="stringliteral">" large clauses, "</span> << num_implications << <span class="stringliteral">" implications"</span>;</div>
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<div class="line"><a id="l00171" name="l00171"></a><span class="lineno"> 171</span>}</div>
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<div class="line"><a id="l00172" name="l00172"></a><span class="lineno"> 172</span> </div>
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<div class="line"><a id="l00173" name="l00173"></a><span class="lineno"> 173</span><span class="comment">// This method heuristically explores subsets of variables and decide if the</span></div>
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<div class="line"><a id="l00174" name="l00174"></a><span class="lineno"> 174</span><span class="comment">// projection of all tuples nearly fills all the possible combination of</span></div>
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<div class="line"><a id="l00175" name="l00175"></a><span class="lineno"> 175</span><span class="comment">// projected variables domains.</span></div>
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<div class="line"><a id="l00176" name="l00176"></a><span class="lineno"> 176</span><span class="comment">//</span></div>
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<div class="line"><a id="l00177" name="l00177"></a><span class="lineno"> 177</span><span class="comment">// In that case, it creates the complement of the projected tuples and add that</span></div>
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<div class="line"><a id="l00178" name="l00178"></a><span class="lineno"> 178</span><span class="comment">// as a forbidden assignment constraint.</span></div>
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<div class="line"><a id="l00179" name="l00179"></a><span class="lineno"> 179</span><span class="keywordtype">void</span> ExploreSubsetOfVariablesAndAddNegatedTables(</div>
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<div class="line"><a id="l00180" name="l00180"></a><span class="lineno"> 180</span> <span class="keyword">const</span> std::vector<std::vector<int64_t>>& tuples,</div>
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<div class="line"><a id="l00181" name="l00181"></a><span class="lineno"> 181</span> <span class="keyword">const</span> std::vector<std::vector<int64_t>>& var_domains,</div>
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<div class="line"><a id="l00182" name="l00182"></a><span class="lineno"> 182</span> absl::Span<const IntegerVariable> vars, Model* <a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>) {</div>
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<div class="line"><a id="l00183" name="l00183"></a><span class="lineno"> 183</span> <span class="keyword">const</span> <span class="keywordtype">int</span> num_vars = var_domains.size();</div>
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<div class="line"><a id="l00184" name="l00184"></a><span class="lineno"> 184</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> start = 0; start < num_vars; ++start) {</div>
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<div class="line"><a id="l00185" name="l00185"></a><span class="lineno"> 185</span> <span class="keyword">const</span> <span class="keywordtype">int</span> limit = start == 0 ? num_vars : <a class="code hl_variable" href="alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045">std::min</a>(num_vars, start + 3);</div>
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<div class="line"><a id="l00186" name="l00186"></a><span class="lineno"> 186</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> end = start + 1; end < limit; ++end) {</div>
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<div class="line"><a id="l00187" name="l00187"></a><span class="lineno"> 187</span> <span class="comment">// TODO(user): If we add negated table for more than one value of</span></div>
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<div class="line"><a id="l00188" name="l00188"></a><span class="lineno"> 188</span> <span class="comment">// end, because the set of variables will be included in each other, we</span></div>
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<div class="line"><a id="l00189" name="l00189"></a><span class="lineno"> 189</span> <span class="comment">// could reduce the number of clauses added. I.e if we excluded</span></div>
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<div class="line"><a id="l00190" name="l00190"></a><span class="lineno"> 190</span> <span class="comment">// (x=2, y=3) there is no need to exclude any of the tuples</span></div>
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<div class="line"><a id="l00191" name="l00191"></a><span class="lineno"> 191</span> <span class="comment">// (x=2, y=3, z=*).</span></div>
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<div class="line"><a id="l00192" name="l00192"></a><span class="lineno"> 192</span> </div>
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<div class="line"><a id="l00193" name="l00193"></a><span class="lineno"> 193</span> <span class="comment">// Compute the maximum number of such prefix tuples.</span></div>
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<div class="line"><a id="l00194" name="l00194"></a><span class="lineno"> 194</span> int64_t max_num_prefix_tuples = 1;</div>
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<div class="line"><a id="l00195" name="l00195"></a><span class="lineno"> 195</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = start; i <= end; ++i) {</div>
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<div class="line"><a id="l00196" name="l00196"></a><span class="lineno"> 196</span> max_num_prefix_tuples =</div>
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<div class="line"><a id="l00197" name="l00197"></a><span class="lineno"> 197</span> <a class="code hl_function" href="namespaceoperations__research.html#aa64bf49d041052c7cb3f40f7496d7534">CapProd</a>(max_num_prefix_tuples, var_domains[i].size());</div>
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<div class="line"><a id="l00198" name="l00198"></a><span class="lineno"> 198</span> }</div>
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<div class="line"><a id="l00199" name="l00199"></a><span class="lineno"> 199</span> </div>
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<div class="line"><a id="l00200" name="l00200"></a><span class="lineno"> 200</span> <span class="comment">// Abort early.</span></div>
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<div class="line"><a id="l00201" name="l00201"></a><span class="lineno"> 201</span> <span class="keywordflow">if</span> (max_num_prefix_tuples > 2 * tuples.size()) <span class="keywordflow">break</span>;</div>
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<div class="line"><a id="l00202" name="l00202"></a><span class="lineno"> 202</span> </div>
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<div class="line"><a id="l00203" name="l00203"></a><span class="lineno"> 203</span> absl::flat_hash_set<absl::Span<const int64_t>> prefixes;</div>
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<div class="line"><a id="l00204" name="l00204"></a><span class="lineno"> 204</span> <span class="keywordtype">bool</span> skip = <span class="keyword">false</span>;</div>
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<div class="line"><a id="l00205" name="l00205"></a><span class="lineno"> 205</span> <span class="keywordflow">for</span> (<span class="keyword">const</span> std::vector<int64_t>& tuple : tuples) {</div>
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<div class="line"><a id="l00206" name="l00206"></a><span class="lineno"> 206</span> prefixes.insert(absl::MakeSpan(&tuple[start], end - start + 1));</div>
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<div class="line"><a id="l00207" name="l00207"></a><span class="lineno"> 207</span> <span class="keywordflow">if</span> (prefixes.size() == max_num_prefix_tuples) {</div>
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<div class="line"><a id="l00208" name="l00208"></a><span class="lineno"> 208</span> <span class="comment">// Nothing to add with this range [start..end].</span></div>
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<div class="line"><a id="l00209" name="l00209"></a><span class="lineno"> 209</span> skip = <span class="keyword">true</span>;</div>
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<div class="line"><a id="l00210" name="l00210"></a><span class="lineno"> 210</span> <span class="keywordflow">break</span>;</div>
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<div class="line"><a id="l00211" name="l00211"></a><span class="lineno"> 211</span> }</div>
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<div class="line"><a id="l00212" name="l00212"></a><span class="lineno"> 212</span> }</div>
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<div class="line"><a id="l00213" name="l00213"></a><span class="lineno"> 213</span> <span class="keywordflow">if</span> (skip) <span class="keywordflow">continue</span>;</div>
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<div class="line"><a id="l00214" name="l00214"></a><span class="lineno"> 214</span> <span class="keyword">const</span> <span class="keywordtype">int</span> num_prefix_tuples = prefixes.size();</div>
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<div class="line"><a id="l00215" name="l00215"></a><span class="lineno"> 215</span> </div>
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<div class="line"><a id="l00216" name="l00216"></a><span class="lineno"> 216</span> std::vector<std::vector<int64_t>> negated_tuples;</div>
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<div class="line"><a id="l00217" name="l00217"></a><span class="lineno"> 217</span> </div>
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<div class="line"><a id="l00218" name="l00218"></a><span class="lineno"> 218</span> <span class="keywordtype">int</span> created = 0;</div>
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<div class="line"><a id="l00219" name="l00219"></a><span class="lineno"> 219</span> <span class="keywordflow">if</span> (num_prefix_tuples < max_num_prefix_tuples &&</div>
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<div class="line"><a id="l00220" name="l00220"></a><span class="lineno"> 220</span> max_num_prefix_tuples < num_prefix_tuples * 2) {</div>
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<div class="line"><a id="l00221" name="l00221"></a><span class="lineno"> 221</span> std::vector<int64_t> tmp_tuple;</div>
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<div class="line"><a id="l00222" name="l00222"></a><span class="lineno"> 222</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < max_num_prefix_tuples; ++i) {</div>
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<div class="line"><a id="l00223" name="l00223"></a><span class="lineno"> 223</span> tmp_tuple.clear();</div>
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<div class="line"><a id="l00224" name="l00224"></a><span class="lineno"> 224</span> <span class="keywordtype">int</span> <a class="code hl_variable" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a> = i;</div>
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<div class="line"><a id="l00225" name="l00225"></a><span class="lineno"> 225</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> j = start; j <= end; ++j) {</div>
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<div class="line"><a id="l00226" name="l00226"></a><span class="lineno"> 226</span> tmp_tuple.push_back(var_domains[j][<a class="code hl_variable" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a> % var_domains[j].size()]);</div>
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<div class="line"><a id="l00227" name="l00227"></a><span class="lineno"> 227</span> <a class="code hl_variable" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a> /= var_domains[j].size();</div>
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<div class="line"><a id="l00228" name="l00228"></a><span class="lineno"> 228</span> }</div>
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<div class="line"><a id="l00229" name="l00229"></a><span class="lineno"> 229</span> <span class="keywordflow">if</span> (!prefixes.contains(tmp_tuple)) {</div>
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<div class="line"><a id="l00230" name="l00230"></a><span class="lineno"> 230</span> negated_tuples.push_back(tmp_tuple);</div>
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<div class="line"><a id="l00231" name="l00231"></a><span class="lineno"> 231</span> created++;</div>
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<div class="line"><a id="l00232" name="l00232"></a><span class="lineno"> 232</span> }</div>
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<div class="line"><a id="l00233" name="l00233"></a><span class="lineno"> 233</span> }</div>
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<div class="line"><a id="l00234" name="l00234"></a><span class="lineno"> 234</span> <a class="code hl_function" href="namespaceoperations__research_1_1sat.html#a77234dab48516b8bceef7fbf4744bba1">AddNegatedTableConstraint</a>(vars.subspan(start, end - start + 1),</div>
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<div class="line"><a id="l00235" name="l00235"></a><span class="lineno"> 235</span> negated_tuples, <a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>);</div>
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<div class="line"><a id="l00236" name="l00236"></a><span class="lineno"> 236</span> <a class="code hl_define" href="base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927">VLOG</a>(2) << <span class="stringliteral">" add negated tables with "</span> << created</div>
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<div class="line"><a id="l00237" name="l00237"></a><span class="lineno"> 237</span> << <span class="stringliteral">" tuples on the range ["</span> << start << <span class="stringliteral">","</span> << end << <span class="stringliteral">"]"</span>;</div>
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<div class="line"><a id="l00238" name="l00238"></a><span class="lineno"> 238</span> }</div>
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<div class="line"><a id="l00239" name="l00239"></a><span class="lineno"> 239</span> }</div>
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<div class="line"><a id="l00240" name="l00240"></a><span class="lineno"> 240</span> }</div>
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<div class="line"><a id="l00241" name="l00241"></a><span class="lineno"> 241</span>}</div>
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<div class="line"><a id="l00242" name="l00242"></a><span class="lineno"> 242</span> </div>
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<div class="line"><a id="l00243" name="l00243"></a><span class="lineno"> 243</span>} <span class="comment">// namespace</span></div>
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<div class="line"><a id="l00244" name="l00244"></a><span class="lineno"> 244</span> </div>
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<div class="line"><a id="l00245" name="l00245"></a><span class="lineno"> 245</span><span class="comment">// Makes a static decomposition of a table constraint into clauses.</span></div>
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<div class="line"><a id="l00246" name="l00246"></a><span class="lineno"> 246</span><span class="comment">// This uses an auxiliary vector of Literals tuple_literals.</span></div>
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<div class="line"><a id="l00247" name="l00247"></a><span class="lineno"> 247</span><span class="comment">// For every column col, and every value val of that column,</span></div>
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<div class="line"><a id="l00248" name="l00248"></a><span class="lineno"> 248</span><span class="comment">// the decomposition uses clauses corresponding to the equivalence:</span></div>
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<div class="line"><a id="l00249" name="l00249"></a><span class="lineno"> 249</span><span class="comment">// (\/_{row | tuples[row][col] = val} tuple_literals[row]) <=> (vars[col] = val)</span></div>
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<div class="line"><a id="l00250" name="l00250"></a><span class="lineno"><a class="line" href="namespaceoperations__research_1_1sat.html#a15784ff0c35105c45925c9fbe29121d1"> 250</a></span><span class="keywordtype">void</span> <a class="code hl_function" href="namespaceoperations__research_1_1sat.html#a15784ff0c35105c45925c9fbe29121d1">AddTableConstraint</a>(absl::Span<const IntegerVariable> vars,</div>
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<div class="line"><a id="l00251" name="l00251"></a><span class="lineno"> 251</span> std::vector<std::vector<int64_t>> tuples,</div>
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<div class="line"><a id="l00252" name="l00252"></a><span class="lineno"> 252</span> <a class="code hl_class" href="classoperations__research_1_1sat_1_1_model.html">Model</a>* <a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>) {</div>
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<div class="line"><a id="l00253" name="l00253"></a><span class="lineno"> 253</span> <span class="keyword">const</span> <span class="keywordtype">int</span> n = vars.size();</div>
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<div class="line"><a id="l00254" name="l00254"></a><span class="lineno"> 254</span> <a class="code hl_class" href="classoperations__research_1_1sat_1_1_integer_trail.html">IntegerTrail</a>* integer_trail = <a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->GetOrCreate<<a class="code hl_class" href="classoperations__research_1_1sat_1_1_integer_trail.html">IntegerTrail</a>>();</div>
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<div class="line"><a id="l00255" name="l00255"></a><span class="lineno"> 255</span> <span class="keyword">const</span> <span class="keywordtype">int</span> num_original_tuples = tuples.size();</div>
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<div class="line"><a id="l00256" name="l00256"></a><span class="lineno"> 256</span> </div>
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<div class="line"><a id="l00257" name="l00257"></a><span class="lineno"> 257</span> <span class="comment">// Compute the set of possible values for each variable (from the table).</span></div>
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<div class="line"><a id="l00258" name="l00258"></a><span class="lineno"> 258</span> <span class="comment">// Remove invalid tuples along the way.</span></div>
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<div class="line"><a id="l00259" name="l00259"></a><span class="lineno"> 259</span> std::vector<absl::flat_hash_set<int64_t>> values_per_var(n);</div>
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<div class="line"><a id="l00260" name="l00260"></a><span class="lineno"> 260</span> <span class="keywordtype">int</span> <a class="code hl_variable" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a> = 0;</div>
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<div class="line"><a id="l00261" name="l00261"></a><span class="lineno"> 261</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> tuple_index = 0; tuple_index < num_original_tuples; ++tuple_index) {</div>
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<div class="line"><a id="l00262" name="l00262"></a><span class="lineno"> 262</span> <span class="keywordtype">bool</span> keep = <span class="keyword">true</span>;</div>
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<div class="line"><a id="l00263" name="l00263"></a><span class="lineno"> 263</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < n; ++i) {</div>
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<div class="line"><a id="l00264" name="l00264"></a><span class="lineno"> 264</span> <span class="keyword">const</span> int64_t <a class="code hl_variable" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a> = tuples[tuple_index][i];</div>
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<div class="line"><a id="l00265" name="l00265"></a><span class="lineno"> 265</span> <span class="keywordflow">if</span> (!values_per_var[i].contains(<a class="code hl_variable" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>) <span class="comment">/* cached */</span> &&</div>
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<div class="line"><a id="l00266" name="l00266"></a><span class="lineno"> 266</span> !integer_trail-><a class="code hl_function" href="classoperations__research_1_1sat_1_1_integer_trail.html#af4303d31360f06c50729f156b1fbc2a9">InitialVariableDomain</a>(vars[i]).<a class="code hl_function" href="classoperations__research_1_1_domain.html#a22c6c2f121586b5d76feb4b0e536dfde">Contains</a>(<a class="code hl_variable" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>)) {</div>
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<div class="line"><a id="l00267" name="l00267"></a><span class="lineno"> 267</span> keep = <span class="keyword">false</span>;</div>
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<div class="line"><a id="l00268" name="l00268"></a><span class="lineno"> 268</span> <span class="keywordflow">break</span>;</div>
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<div class="line"><a id="l00269" name="l00269"></a><span class="lineno"> 269</span> }</div>
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<div class="line"><a id="l00270" name="l00270"></a><span class="lineno"> 270</span> }</div>
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<div class="line"><a id="l00271" name="l00271"></a><span class="lineno"> 271</span> <span class="keywordflow">if</span> (keep) {</div>
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<div class="line"><a id="l00272" name="l00272"></a><span class="lineno"> 272</span> <a class="code hl_function" href="namespaceoperations__research_1_1math__opt.html#a5de89a1f6e3f80a49a0d76136d8044e2">std::swap</a>(tuples[tuple_index], tuples[<a class="code hl_variable" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>]);</div>
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<div class="line"><a id="l00273" name="l00273"></a><span class="lineno"> 273</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < n; ++i) {</div>
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<div class="line"><a id="l00274" name="l00274"></a><span class="lineno"> 274</span> values_per_var[i].insert(tuples[<a class="code hl_variable" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>][i]);</div>
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<div class="line"><a id="l00275" name="l00275"></a><span class="lineno"> 275</span> }</div>
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<div class="line"><a id="l00276" name="l00276"></a><span class="lineno"> 276</span> <a class="code hl_variable" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>++;</div>
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<div class="line"><a id="l00277" name="l00277"></a><span class="lineno"> 277</span> }</div>
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<div class="line"><a id="l00278" name="l00278"></a><span class="lineno"> 278</span> }</div>
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<div class="line"><a id="l00279" name="l00279"></a><span class="lineno"> 279</span> tuples.resize(<a class="code hl_variable" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>);</div>
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<div class="line"><a id="l00280" name="l00280"></a><span class="lineno"> 280</span> <span class="keyword">const</span> <span class="keywordtype">int</span> num_valid_tuples = tuples.size();</div>
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<div class="line"><a id="l00281" name="l00281"></a><span class="lineno"> 281</span> </div>
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<div class="line"><a id="l00282" name="l00282"></a><span class="lineno"> 282</span> <span class="keywordflow">if</span> (tuples.empty()) {</div>
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<div class="line"><a id="l00283" name="l00283"></a><span class="lineno"> 283</span> <a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->GetOrCreate<<a class="code hl_class" href="classoperations__research_1_1sat_1_1_sat_solver.html">SatSolver</a>>()->NotifyThatModelIsUnsat();</div>
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<div class="line"><a id="l00284" name="l00284"></a><span class="lineno"> 284</span> <span class="keywordflow">return</span>;</div>
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<div class="line"><a id="l00285" name="l00285"></a><span class="lineno"> 285</span> }</div>
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<div class="line"><a id="l00286" name="l00286"></a><span class="lineno"> 286</span> </div>
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<div class="line"><a id="l00287" name="l00287"></a><span class="lineno"> 287</span> <span class="keywordflow">if</span> (n == 2) {</div>
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<div class="line"><a id="l00288" name="l00288"></a><span class="lineno"> 288</span> AddSizeTwoTable(vars, tuples, values_per_var, <a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>);</div>
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<div class="line"><a id="l00289" name="l00289"></a><span class="lineno"> 289</span> <span class="keywordflow">return</span>;</div>
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<div class="line"><a id="l00290" name="l00290"></a><span class="lineno"> 290</span> }</div>
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<div class="line"><a id="l00291" name="l00291"></a><span class="lineno"> 291</span> </div>
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<div class="line"><a id="l00292" name="l00292"></a><span class="lineno"> 292</span> <span class="comment">// It is easier to compute this before compression, as compression will merge</span></div>
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<div class="line"><a id="l00293" name="l00293"></a><span class="lineno"> 293</span> <span class="comment">// tuples.</span></div>
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<div class="line"><a id="l00294" name="l00294"></a><span class="lineno"> 294</span> <span class="keywordtype">int</span> num_prefix_tuples = 0;</div>
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<div class="line"><a id="l00295" name="l00295"></a><span class="lineno"> 295</span> {</div>
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<div class="line"><a id="l00296" name="l00296"></a><span class="lineno"> 296</span> absl::flat_hash_set<absl::Span<const int64_t>> prefixes;</div>
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<div class="line"><a id="l00297" name="l00297"></a><span class="lineno"> 297</span> <span class="keywordflow">for</span> (<span class="keyword">const</span> std::vector<int64_t>& tuple : tuples) {</div>
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<div class="line"><a id="l00298" name="l00298"></a><span class="lineno"> 298</span> prefixes.insert(absl::MakeSpan(tuple.data(), n - 1));</div>
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<div class="line"><a id="l00299" name="l00299"></a><span class="lineno"> 299</span> }</div>
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<div class="line"><a id="l00300" name="l00300"></a><span class="lineno"> 300</span> num_prefix_tuples = prefixes.size();</div>
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<div class="line"><a id="l00301" name="l00301"></a><span class="lineno"> 301</span> }</div>
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<div class="line"><a id="l00302" name="l00302"></a><span class="lineno"> 302</span> </div>
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<div class="line"><a id="l00303" name="l00303"></a><span class="lineno"> 303</span> std::vector<std::vector<int64_t>> var_domains(n);</div>
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<div class="line"><a id="l00304" name="l00304"></a><span class="lineno"> 304</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> j = 0; j < n; ++j) {</div>
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<div class="line"><a id="l00305" name="l00305"></a><span class="lineno"> 305</span> var_domains[j].assign(values_per_var[j].begin(), values_per_var[j].end());</div>
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<div class="line"><a id="l00306" name="l00306"></a><span class="lineno"> 306</span> std::sort(var_domains[j].begin(), var_domains[j].end());</div>
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<div class="line"><a id="l00307" name="l00307"></a><span class="lineno"> 307</span> }</div>
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<div class="line"><a id="l00308" name="l00308"></a><span class="lineno"> 308</span> <a class="code hl_define" href="base_2logging_8h.html#a7e03ec13560fa94a8fea569960d7efc6">CHECK_GT</a>(vars.size(), 2);</div>
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<div class="line"><a id="l00309" name="l00309"></a><span class="lineno"> 309</span> ExploreSubsetOfVariablesAndAddNegatedTables(tuples, var_domains, vars, <a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>);</div>
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<div class="line"><a id="l00310" name="l00310"></a><span class="lineno"> 310</span> </div>
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<div class="line"><a id="l00311" name="l00311"></a><span class="lineno"> 311</span> <span class="comment">// The variable domains have been computed. Fully encode variables.</span></div>
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<div class="line"><a id="l00312" name="l00312"></a><span class="lineno"> 312</span> <span class="comment">// Note that in some corner cases (like duplicate vars), as we call</span></div>
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<div class="line"><a id="l00313" name="l00313"></a><span class="lineno"> 313</span> <span class="comment">// UpdateInitialDomain(), the domain of other variable could become more</span></div>
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<div class="line"><a id="l00314" name="l00314"></a><span class="lineno"> 314</span> <span class="comment">// restricted that values_per_var. For now, we do not try to reach a fixed</span></div>
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<div class="line"><a id="l00315" name="l00315"></a><span class="lineno"> 315</span> <span class="comment">// point here.</span></div>
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<div class="line"><a id="l00316" name="l00316"></a><span class="lineno"> 316</span> std::vector<absl::flat_hash_map<IntegerValue, Literal>> encodings(n);</div>
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<div class="line"><a id="l00317" name="l00317"></a><span class="lineno"> 317</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < n; ++i) {</div>
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<div class="line"><a id="l00318" name="l00318"></a><span class="lineno"> 318</span> <span class="keyword">const</span> std::vector<int64_t> reached_values(values_per_var[i].begin(),</div>
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<div class="line"><a id="l00319" name="l00319"></a><span class="lineno"> 319</span> values_per_var[i].end());</div>
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<div class="line"><a id="l00320" name="l00320"></a><span class="lineno"> 320</span> integer_trail-><a class="code hl_function" href="classoperations__research_1_1sat_1_1_integer_trail.html#af931801f592e954a6623cab8cf9a4485">UpdateInitialDomain</a>(vars[i],</div>
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<div class="line"><a id="l00321" name="l00321"></a><span class="lineno"> 321</span> <a class="code hl_function" href="classoperations__research_1_1_domain.html#ac2d88de67793063ad5f5e923ffd1c0eb">Domain::FromValues</a>(reached_values));</div>
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<div class="line"><a id="l00322" name="l00322"></a><span class="lineno"> 322</span> <span class="keywordflow">if</span> (values_per_var.size() > 1) {</div>
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<div class="line"><a id="l00323" name="l00323"></a><span class="lineno"> 323</span> <a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->Add(<a class="code hl_function" href="namespaceoperations__research_1_1sat.html#ae282013f2321b5817fd61ad9e705e446">FullyEncodeVariable</a>(vars[i]));</div>
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<div class="line"><a id="l00324" name="l00324"></a><span class="lineno"> 324</span> encodings[i] = GetEncoding(vars[i], <a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>);</div>
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<div class="line"><a id="l00325" name="l00325"></a><span class="lineno"> 325</span> }</div>
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<div class="line"><a id="l00326" name="l00326"></a><span class="lineno"> 326</span> }</div>
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<div class="line"><a id="l00327" name="l00327"></a><span class="lineno"> 327</span> </div>
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<div class="line"><a id="l00328" name="l00328"></a><span class="lineno"> 328</span> <span class="comment">// Compress tuples.</span></div>
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<div class="line"><a id="l00329" name="l00329"></a><span class="lineno"> 329</span> <span class="keyword">const</span> int64_t any_value = <a class="code hl_variable" href="alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045">std::numeric_limits<int64_t>::min</a>();</div>
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<div class="line"><a id="l00330" name="l00330"></a><span class="lineno"> 330</span> std::vector<int64_t> domain_sizes;</div>
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<div class="line"><a id="l00331" name="l00331"></a><span class="lineno"> 331</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < n; ++i) {</div>
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<div class="line"><a id="l00332" name="l00332"></a><span class="lineno"> 332</span> domain_sizes.push_back(values_per_var[i].size());</div>
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<div class="line"><a id="l00333" name="l00333"></a><span class="lineno"> 333</span> }</div>
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<div class="line"><a id="l00334" name="l00334"></a><span class="lineno"> 334</span> <a class="code hl_function" href="namespaceoperations__research_1_1sat.html#a3e5f39b52251ad02e571592493b4d39f">CompressTuples</a>(domain_sizes, any_value, &tuples);</div>
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<div class="line"><a id="l00335" name="l00335"></a><span class="lineno"> 335</span> <span class="keyword">const</span> <span class="keywordtype">int</span> num_compressed_tuples = tuples.size();</div>
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<div class="line"><a id="l00336" name="l00336"></a><span class="lineno"> 336</span> </div>
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<div class="line"><a id="l00337" name="l00337"></a><span class="lineno"> 337</span> <span class="comment">// Detect if prefix tuples are all different.</span></div>
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<div class="line"><a id="l00338" name="l00338"></a><span class="lineno"> 338</span> <span class="keyword">const</span> <span class="keywordtype">bool</span> prefixes_are_all_different = num_prefix_tuples == num_valid_tuples;</div>
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<div class="line"><a id="l00339" name="l00339"></a><span class="lineno"> 339</span> <span class="keywordflow">if</span> (<a class="code hl_define" href="vlog__is__on_8h.html#a956152cad330225654d128f35c00efce">VLOG_IS_ON</a>(2)) {</div>
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<div class="line"><a id="l00340" name="l00340"></a><span class="lineno"> 340</span> <span class="comment">// Compute the maximum number of prefix tuples.</span></div>
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<div class="line"><a id="l00341" name="l00341"></a><span class="lineno"> 341</span> int64_t max_num_prefix_tuples = 1;</div>
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<div class="line"><a id="l00342" name="l00342"></a><span class="lineno"> 342</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i + 1 < n; ++i) {</div>
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<div class="line"><a id="l00343" name="l00343"></a><span class="lineno"> 343</span> max_num_prefix_tuples =</div>
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<div class="line"><a id="l00344" name="l00344"></a><span class="lineno"> 344</span> <a class="code hl_function" href="namespaceoperations__research.html#aa64bf49d041052c7cb3f40f7496d7534">CapProd</a>(max_num_prefix_tuples, values_per_var[i].size());</div>
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<div class="line"><a id="l00345" name="l00345"></a><span class="lineno"> 345</span> }</div>
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<div class="line"><a id="l00346" name="l00346"></a><span class="lineno"> 346</span> </div>
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<div class="line"><a id="l00347" name="l00347"></a><span class="lineno"> 347</span> std::string <a class="code hl_variable" href="trace_8cc.html#a36bd74109f547f7f8198faf5a12d2879">message</a> = absl::StrCat(</div>
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<div class="line"><a id="l00348" name="l00348"></a><span class="lineno"> 348</span> <span class="stringliteral">"Table: "</span>, n, <span class="stringliteral">" variables, original tuples = "</span>, num_original_tuples);</div>
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<div class="line"><a id="l00349" name="l00349"></a><span class="lineno"> 349</span> <span class="keywordflow">if</span> (num_valid_tuples != num_original_tuples) {</div>
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<div class="line"><a id="l00350" name="l00350"></a><span class="lineno"> 350</span> absl::StrAppend(&<a class="code hl_variable" href="trace_8cc.html#a36bd74109f547f7f8198faf5a12d2879">message</a>, <span class="stringliteral">", valid tuples = "</span>, num_valid_tuples);</div>
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<div class="line"><a id="l00351" name="l00351"></a><span class="lineno"> 351</span> }</div>
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<div class="line"><a id="l00352" name="l00352"></a><span class="lineno"> 352</span> <span class="keywordflow">if</span> (prefixes_are_all_different) {</div>
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<div class="line"><a id="l00353" name="l00353"></a><span class="lineno"> 353</span> <span class="keywordflow">if</span> (num_prefix_tuples < max_num_prefix_tuples) {</div>
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<div class="line"><a id="l00354" name="l00354"></a><span class="lineno"> 354</span> absl::StrAppend(&<a class="code hl_variable" href="trace_8cc.html#a36bd74109f547f7f8198faf5a12d2879">message</a>, <span class="stringliteral">", partial prefix = "</span>, num_prefix_tuples, <span class="stringliteral">"/"</span>,</div>
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<div class="line"><a id="l00355" name="l00355"></a><span class="lineno"> 355</span> max_num_prefix_tuples);</div>
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<div class="line"><a id="l00356" name="l00356"></a><span class="lineno"> 356</span> } <span class="keywordflow">else</span> {</div>
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<div class="line"><a id="l00357" name="l00357"></a><span class="lineno"> 357</span> absl::StrAppend(&<a class="code hl_variable" href="trace_8cc.html#a36bd74109f547f7f8198faf5a12d2879">message</a>, <span class="stringliteral">", full prefix = true"</span>);</div>
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<div class="line"><a id="l00358" name="l00358"></a><span class="lineno"> 358</span> }</div>
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<div class="line"><a id="l00359" name="l00359"></a><span class="lineno"> 359</span> } <span class="keywordflow">else</span> {</div>
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<div class="line"><a id="l00360" name="l00360"></a><span class="lineno"> 360</span> absl::StrAppend(&<a class="code hl_variable" href="trace_8cc.html#a36bd74109f547f7f8198faf5a12d2879">message</a>, <span class="stringliteral">", num prefix tuples = "</span>, num_prefix_tuples);</div>
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<div class="line"><a id="l00361" name="l00361"></a><span class="lineno"> 361</span> }</div>
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<div class="line"><a id="l00362" name="l00362"></a><span class="lineno"> 362</span> <span class="keywordflow">if</span> (num_compressed_tuples != num_valid_tuples) {</div>
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<div class="line"><a id="l00363" name="l00363"></a><span class="lineno"> 363</span> absl::StrAppend(&<a class="code hl_variable" href="trace_8cc.html#a36bd74109f547f7f8198faf5a12d2879">message</a>,</div>
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<div class="line"><a id="l00364" name="l00364"></a><span class="lineno"> 364</span> <span class="stringliteral">", compressed tuples = "</span>, num_compressed_tuples);</div>
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<div class="line"><a id="l00365" name="l00365"></a><span class="lineno"> 365</span> }</div>
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<div class="line"><a id="l00366" name="l00366"></a><span class="lineno"> 366</span> <a class="code hl_define" href="base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927">VLOG</a>(2) << <a class="code hl_variable" href="trace_8cc.html#a36bd74109f547f7f8198faf5a12d2879">message</a>;</div>
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<div class="line"><a id="l00367" name="l00367"></a><span class="lineno"> 367</span> }</div>
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<div class="line"><a id="l00368" name="l00368"></a><span class="lineno"> 368</span> </div>
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<div class="line"><a id="l00369" name="l00369"></a><span class="lineno"> 369</span> <span class="keywordflow">if</span> (tuples.size() == 1) {</div>
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<div class="line"><a id="l00370" name="l00370"></a><span class="lineno"> 370</span> <span class="comment">// Nothing more to do.</span></div>
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<div class="line"><a id="l00371" name="l00371"></a><span class="lineno"> 371</span> <span class="keywordflow">return</span>;</div>
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<div class="line"><a id="l00372" name="l00372"></a><span class="lineno"> 372</span> }</div>
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<div class="line"><a id="l00373" name="l00373"></a><span class="lineno"> 373</span> </div>
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<div class="line"><a id="l00374" name="l00374"></a><span class="lineno"> 374</span> <span class="comment">// Create one Boolean variable per tuple to indicate if it can still be</span></div>
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<div class="line"><a id="l00375" name="l00375"></a><span class="lineno"> 375</span> <span class="comment">// selected or not. Note that we don't enforce exactly one tuple to be</span></div>
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<div class="line"><a id="l00376" name="l00376"></a><span class="lineno"> 376</span> <span class="comment">// selected because these variables are just used by this constraint, so</span></div>
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<div class="line"><a id="l00377" name="l00377"></a><span class="lineno"> 377</span> <span class="comment">// only the information "can't be selected" is important.</span></div>
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<div class="line"><a id="l00378" name="l00378"></a><span class="lineno"> 378</span> <span class="comment">//</span></div>
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<div class="line"><a id="l00379" name="l00379"></a><span class="lineno"> 379</span> <span class="comment">// TODO(user): If a value in one column is unique, we don't need to</span></div>
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<div class="line"><a id="l00380" name="l00380"></a><span class="lineno"> 380</span> <span class="comment">// create a new BooleanVariable corresponding to this line since we can use</span></div>
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|
<div class="line"><a id="l00381" name="l00381"></a><span class="lineno"> 381</span> <span class="comment">// the one corresponding to this value in that column.</span></div>
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|
<div class="line"><a id="l00382" name="l00382"></a><span class="lineno"> 382</span> <span class="comment">//</span></div>
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<div class="line"><a id="l00383" name="l00383"></a><span class="lineno"> 383</span> <span class="comment">// Note that if there is just one tuple, there is no need to create such</span></div>
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<div class="line"><a id="l00384" name="l00384"></a><span class="lineno"> 384</span> <span class="comment">// variables since they are not used.</span></div>
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<div class="line"><a id="l00385" name="l00385"></a><span class="lineno"> 385</span> std::vector<Literal> tuple_literals;</div>
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<div class="line"><a id="l00386" name="l00386"></a><span class="lineno"> 386</span> tuple_literals.reserve(tuples.size());</div>
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<div class="line"><a id="l00387" name="l00387"></a><span class="lineno"> 387</span> <span class="keywordflow">if</span> (tuples.size() == 2) {</div>
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<div class="line"><a id="l00388" name="l00388"></a><span class="lineno"> 388</span> tuple_literals.emplace_back(<a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->Add(<a class="code hl_function" href="namespaceoperations__research_1_1sat.html#a3cb95842130bc03177260ad20464bdbf">NewBooleanVariable</a>()), <span class="keyword">true</span>);</div>
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<div class="line"><a id="l00389" name="l00389"></a><span class="lineno"> 389</span> tuple_literals.emplace_back(tuple_literals[0].Negated());</div>
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<div class="line"><a id="l00390" name="l00390"></a><span class="lineno"> 390</span> } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (tuples.size() > 2) {</div>
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<div class="line"><a id="l00391" name="l00391"></a><span class="lineno"> 391</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < tuples.size(); ++i) {</div>
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<div class="line"><a id="l00392" name="l00392"></a><span class="lineno"> 392</span> tuple_literals.emplace_back(<a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->Add(<a class="code hl_function" href="namespaceoperations__research_1_1sat.html#a3cb95842130bc03177260ad20464bdbf">NewBooleanVariable</a>()), <span class="keyword">true</span>);</div>
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<div class="line"><a id="l00393" name="l00393"></a><span class="lineno"> 393</span> }</div>
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<div class="line"><a id="l00394" name="l00394"></a><span class="lineno"> 394</span> <a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->Add(<a class="code hl_function" href="namespaceoperations__research_1_1sat.html#a37093a0df3cca500d5f58b1d5482bdc6">ClauseConstraint</a>(tuple_literals));</div>
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<div class="line"><a id="l00395" name="l00395"></a><span class="lineno"> 395</span> }</div>
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<div class="line"><a id="l00396" name="l00396"></a><span class="lineno"> 396</span> </div>
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<div class="line"><a id="l00397" name="l00397"></a><span class="lineno"> 397</span> std::vector<Literal> active_tuple_literals;</div>
|
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<div class="line"><a id="l00398" name="l00398"></a><span class="lineno"> 398</span> std::vector<IntegerValue> active_values;</div>
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<div class="line"><a id="l00399" name="l00399"></a><span class="lineno"> 399</span> std::vector<Literal> any_tuple_literals;</div>
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<div class="line"><a id="l00400" name="l00400"></a><span class="lineno"> 400</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < n; ++i) {</div>
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<div class="line"><a id="l00401" name="l00401"></a><span class="lineno"> 401</span> <span class="keywordflow">if</span> (values_per_var[i].size() == 1) <span class="keywordflow">continue</span>;</div>
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<div class="line"><a id="l00402" name="l00402"></a><span class="lineno"> 402</span> </div>
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<div class="line"><a id="l00403" name="l00403"></a><span class="lineno"> 403</span> active_tuple_literals.clear();</div>
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<div class="line"><a id="l00404" name="l00404"></a><span class="lineno"> 404</span> active_values.clear();</div>
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<div class="line"><a id="l00405" name="l00405"></a><span class="lineno"> 405</span> any_tuple_literals.clear();</div>
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<div class="line"><a id="l00406" name="l00406"></a><span class="lineno"> 406</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> j = 0; j < tuple_literals.size(); ++j) {</div>
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<div class="line"><a id="l00407" name="l00407"></a><span class="lineno"> 407</span> <span class="keyword">const</span> int64_t v = tuples[j][i];</div>
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<div class="line"><a id="l00408" name="l00408"></a><span class="lineno"> 408</span> </div>
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<div class="line"><a id="l00409" name="l00409"></a><span class="lineno"> 409</span> <span class="keywordflow">if</span> (v == any_value) {</div>
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<div class="line"><a id="l00410" name="l00410"></a><span class="lineno"> 410</span> any_tuple_literals.push_back(tuple_literals[j]);</div>
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<div class="line"><a id="l00411" name="l00411"></a><span class="lineno"> 411</span> } <span class="keywordflow">else</span> {</div>
|
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<div class="line"><a id="l00412" name="l00412"></a><span class="lineno"> 412</span> active_tuple_literals.push_back(tuple_literals[j]);</div>
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<div class="line"><a id="l00413" name="l00413"></a><span class="lineno"> 413</span> active_values.push_back(IntegerValue(v));</div>
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<div class="line"><a id="l00414" name="l00414"></a><span class="lineno"> 414</span> }</div>
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<div class="line"><a id="l00415" name="l00415"></a><span class="lineno"> 415</span> }</div>
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<div class="line"><a id="l00416" name="l00416"></a><span class="lineno"> 416</span> </div>
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<div class="line"><a id="l00417" name="l00417"></a><span class="lineno"> 417</span> <span class="keywordflow">if</span> (!active_tuple_literals.empty()) {</div>
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<div class="line"><a id="l00418" name="l00418"></a><span class="lineno"> 418</span> ProcessOneColumn(active_tuple_literals, active_values, encodings[i],</div>
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<div class="line"><a id="l00419" name="l00419"></a><span class="lineno"> 419</span> any_tuple_literals, <a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>);</div>
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<div class="line"><a id="l00420" name="l00420"></a><span class="lineno"> 420</span> }</div>
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<div class="line"><a id="l00421" name="l00421"></a><span class="lineno"> 421</span> }</div>
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<div class="line"><a id="l00422" name="l00422"></a><span class="lineno"> 422</span> </div>
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<div class="line"><a id="l00423" name="l00423"></a><span class="lineno"> 423</span> <span class="keywordflow">if</span> (prefixes_are_all_different) {</div>
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<div class="line"><a id="l00424" name="l00424"></a><span class="lineno"> 424</span> <span class="comment">// The first n-1 columns are all different, this encodes the implication</span></div>
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<div class="line"><a id="l00425" name="l00425"></a><span class="lineno"> 425</span> <span class="comment">// table (tuple of size n - 1) implies value. We can add an optional</span></div>
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<div class="line"><a id="l00426" name="l00426"></a><span class="lineno"> 426</span> <span class="comment">// propagation that should lead to better explanation.</span></div>
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<div class="line"><a id="l00427" name="l00427"></a><span class="lineno"> 427</span> <span class="comment">// For each tuple, we add a clause prefix => last value.</span></div>
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<div class="line"><a id="l00428" name="l00428"></a><span class="lineno"> 428</span> std::vector<Literal> clause;</div>
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<div class="line"><a id="l00429" name="l00429"></a><span class="lineno"> 429</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> j = 0; j < tuples.size(); ++j) {</div>
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<div class="line"><a id="l00430" name="l00430"></a><span class="lineno"> 430</span> clause.clear();</div>
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<div class="line"><a id="l00431" name="l00431"></a><span class="lineno"> 431</span> <span class="keywordtype">bool</span> tuple_is_valid = <span class="keyword">true</span>;</div>
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<div class="line"><a id="l00432" name="l00432"></a><span class="lineno"> 432</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i + 1 < n; ++i) {</div>
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<div class="line"><a id="l00433" name="l00433"></a><span class="lineno"> 433</span> <span class="comment">// Ignore fixed variables.</span></div>
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<div class="line"><a id="l00434" name="l00434"></a><span class="lineno"> 434</span> <span class="keywordflow">if</span> (values_per_var[i].size() == 1) <span class="keywordflow">continue</span>;</div>
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<div class="line"><a id="l00435" name="l00435"></a><span class="lineno"> 435</span> </div>
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<div class="line"><a id="l00436" name="l00436"></a><span class="lineno"> 436</span> <span class="keyword">const</span> int64_t v = tuples[j][i];</div>
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<div class="line"><a id="l00437" name="l00437"></a><span class="lineno"> 437</span> <span class="comment">// Ignored 'any' created during compression.</span></div>
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|
<div class="line"><a id="l00438" name="l00438"></a><span class="lineno"> 438</span> <span class="keywordflow">if</span> (v == any_value) <span class="keywordflow">continue</span>;</div>
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<div class="line"><a id="l00439" name="l00439"></a><span class="lineno"> 439</span> </div>
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<div class="line"><a id="l00440" name="l00440"></a><span class="lineno"> 440</span> <span class="keyword">const</span> IntegerValue <a class="code hl_variable" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>(v);</div>
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<div class="line"><a id="l00441" name="l00441"></a><span class="lineno"> 441</span> <span class="keywordflow">if</span> (!encodings[i].contains(<a class="code hl_variable" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>)) {</div>
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<div class="line"><a id="l00442" name="l00442"></a><span class="lineno"> 442</span> tuple_is_valid = <span class="keyword">false</span>;</div>
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<div class="line"><a id="l00443" name="l00443"></a><span class="lineno"> 443</span> <span class="keywordflow">break</span>;</div>
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<div class="line"><a id="l00444" name="l00444"></a><span class="lineno"> 444</span> }</div>
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<div class="line"><a id="l00445" name="l00445"></a><span class="lineno"> 445</span> clause.push_back(<a class="code hl_function" href="namespacegtl.html#a73f41ac11336b94768fdd41594153d59">gtl::FindOrDie</a>(encodings[i], <a class="code hl_variable" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>).Negated());</div>
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|
<div class="line"><a id="l00446" name="l00446"></a><span class="lineno"> 446</span> }</div>
|
|
<div class="line"><a id="l00447" name="l00447"></a><span class="lineno"> 447</span> <span class="keywordflow">if</span> (!tuple_is_valid) <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a id="l00448" name="l00448"></a><span class="lineno"> 448</span> </div>
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<div class="line"><a id="l00449" name="l00449"></a><span class="lineno"> 449</span> <span class="comment">// Add the target of the implication.</span></div>
|
|
<div class="line"><a id="l00450" name="l00450"></a><span class="lineno"> 450</span> <span class="keyword">const</span> IntegerValue target_value = IntegerValue(tuples[j][n - 1]);</div>
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|
<div class="line"><a id="l00451" name="l00451"></a><span class="lineno"> 451</span> <span class="keywordflow">if</span> (!encodings[n - 1].contains(target_value)) <span class="keywordflow">continue</span>;</div>
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|
<div class="line"><a id="l00452" name="l00452"></a><span class="lineno"> 452</span> <span class="keyword">const</span> <a class="code hl_class" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a> target_literal =</div>
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<div class="line"><a id="l00453" name="l00453"></a><span class="lineno"> 453</span> <a class="code hl_function" href="namespacegtl.html#a73f41ac11336b94768fdd41594153d59">gtl::FindOrDie</a>(encodings[n - 1], target_value);</div>
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<div class="line"><a id="l00454" name="l00454"></a><span class="lineno"> 454</span> clause.push_back(target_literal);</div>
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<div class="line"><a id="l00455" name="l00455"></a><span class="lineno"> 455</span> <a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->Add(<a class="code hl_function" href="namespaceoperations__research_1_1sat.html#a37093a0df3cca500d5f58b1d5482bdc6">ClauseConstraint</a>(clause));</div>
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<div class="line"><a id="l00456" name="l00456"></a><span class="lineno"> 456</span> }</div>
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<div class="line"><a id="l00457" name="l00457"></a><span class="lineno"> 457</span> }</div>
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<div class="line"><a id="l00458" name="l00458"></a><span class="lineno"> 458</span>}</div>
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<div class="line"><a id="l00459" name="l00459"></a><span class="lineno"> 459</span> </div>
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<div class="line"><a id="l00460" name="l00460"></a><span class="lineno"><a class="line" href="namespaceoperations__research_1_1sat.html#a77234dab48516b8bceef7fbf4744bba1"> 460</a></span><span class="keywordtype">void</span> <a class="code hl_function" href="namespaceoperations__research_1_1sat.html#a77234dab48516b8bceef7fbf4744bba1">AddNegatedTableConstraint</a>(absl::Span<const IntegerVariable> vars,</div>
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<div class="line"><a id="l00461" name="l00461"></a><span class="lineno"> 461</span> std::vector<std::vector<int64_t>> tuples,</div>
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<div class="line"><a id="l00462" name="l00462"></a><span class="lineno"> 462</span> <a class="code hl_class" href="classoperations__research_1_1sat_1_1_model.html">Model</a>* <a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>) {</div>
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<div class="line"><a id="l00463" name="l00463"></a><span class="lineno"> 463</span> <span class="keyword">const</span> <span class="keywordtype">int</span> n = vars.size();</div>
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<div class="line"><a id="l00464" name="l00464"></a><span class="lineno"> 464</span> <span class="keyword">auto</span>* integer_trail = <a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->GetOrCreate<<a class="code hl_class" href="classoperations__research_1_1sat_1_1_integer_trail.html">IntegerTrail</a>>();</div>
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<div class="line"><a id="l00465" name="l00465"></a><span class="lineno"> 465</span> <span class="keyword">auto</span>* integer_encoder = <a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->GetOrCreate<<a class="code hl_class" href="classoperations__research_1_1sat_1_1_integer_encoder.html">IntegerEncoder</a>>();</div>
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<div class="line"><a id="l00466" name="l00466"></a><span class="lineno"> 466</span> </div>
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<div class="line"><a id="l00467" name="l00467"></a><span class="lineno"> 467</span> <span class="comment">// Remove unreachable tuples.</span></div>
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<div class="line"><a id="l00468" name="l00468"></a><span class="lineno"> 468</span> <span class="keywordtype">int</span> <a class="code hl_variable" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a> = 0;</div>
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<div class="line"><a id="l00469" name="l00469"></a><span class="lineno"> 469</span> <span class="keywordflow">while</span> (<a class="code hl_variable" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a> < tuples.size()) {</div>
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<div class="line"><a id="l00470" name="l00470"></a><span class="lineno"> 470</span> <span class="keywordtype">bool</span> remove = <span class="keyword">false</span>;</div>
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<div class="line"><a id="l00471" name="l00471"></a><span class="lineno"> 471</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < n; ++i) {</div>
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<div class="line"><a id="l00472" name="l00472"></a><span class="lineno"> 472</span> <span class="keywordflow">if</span> (!integer_trail->InitialVariableDomain(vars[i]).Contains(</div>
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<div class="line"><a id="l00473" name="l00473"></a><span class="lineno"> 473</span> tuples[<a class="code hl_variable" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>][i])) {</div>
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<div class="line"><a id="l00474" name="l00474"></a><span class="lineno"> 474</span> remove = <span class="keyword">true</span>;</div>
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<div class="line"><a id="l00475" name="l00475"></a><span class="lineno"> 475</span> <span class="keywordflow">break</span>;</div>
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<div class="line"><a id="l00476" name="l00476"></a><span class="lineno"> 476</span> }</div>
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<div class="line"><a id="l00477" name="l00477"></a><span class="lineno"> 477</span> }</div>
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<div class="line"><a id="l00478" name="l00478"></a><span class="lineno"> 478</span> <span class="keywordflow">if</span> (remove) {</div>
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<div class="line"><a id="l00479" name="l00479"></a><span class="lineno"> 479</span> tuples[<a class="code hl_variable" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>] = tuples.back();</div>
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<div class="line"><a id="l00480" name="l00480"></a><span class="lineno"> 480</span> tuples.pop_back();</div>
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<div class="line"><a id="l00481" name="l00481"></a><span class="lineno"> 481</span> } <span class="keywordflow">else</span> {</div>
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<div class="line"><a id="l00482" name="l00482"></a><span class="lineno"> 482</span> <a class="code hl_variable" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>++;</div>
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<div class="line"><a id="l00483" name="l00483"></a><span class="lineno"> 483</span> }</div>
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<div class="line"><a id="l00484" name="l00484"></a><span class="lineno"> 484</span> }</div>
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<div class="line"><a id="l00485" name="l00485"></a><span class="lineno"> 485</span> </div>
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<div class="line"><a id="l00486" name="l00486"></a><span class="lineno"> 486</span> <span class="keywordflow">if</span> (tuples.empty()) {</div>
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<div class="line"><a id="l00487" name="l00487"></a><span class="lineno"> 487</span> <span class="keywordflow">return</span>;</div>
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<div class="line"><a id="l00488" name="l00488"></a><span class="lineno"> 488</span> }</div>
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<div class="line"><a id="l00489" name="l00489"></a><span class="lineno"> 489</span> </div>
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<div class="line"><a id="l00490" name="l00490"></a><span class="lineno"> 490</span> <span class="comment">// Compress tuples.</span></div>
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<div class="line"><a id="l00491" name="l00491"></a><span class="lineno"> 491</span> <span class="keyword">const</span> int64_t any_value = <a class="code hl_variable" href="alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045">std::numeric_limits<int64_t>::min</a>();</div>
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<div class="line"><a id="l00492" name="l00492"></a><span class="lineno"> 492</span> std::vector<int64_t> domain_sizes;</div>
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<div class="line"><a id="l00493" name="l00493"></a><span class="lineno"> 493</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < n; ++i) {</div>
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<div class="line"><a id="l00494" name="l00494"></a><span class="lineno"> 494</span> domain_sizes.push_back(</div>
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<div class="line"><a id="l00495" name="l00495"></a><span class="lineno"> 495</span> integer_trail->InitialVariableDomain(vars[i]).Size());</div>
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<div class="line"><a id="l00496" name="l00496"></a><span class="lineno"> 496</span> }</div>
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<div class="line"><a id="l00497" name="l00497"></a><span class="lineno"> 497</span> <a class="code hl_function" href="namespaceoperations__research_1_1sat.html#a3e5f39b52251ad02e571592493b4d39f">CompressTuples</a>(domain_sizes, any_value, &tuples);</div>
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<div class="line"><a id="l00498" name="l00498"></a><span class="lineno"> 498</span> </div>
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<div class="line"><a id="l00499" name="l00499"></a><span class="lineno"> 499</span> <span class="comment">// Collect all relevant var == value literal.</span></div>
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<div class="line"><a id="l00500" name="l00500"></a><span class="lineno"> 500</span> std::vector<absl::flat_hash_map<int64_t, Literal>> mapping(n);</div>
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<div class="line"><a id="l00501" name="l00501"></a><span class="lineno"> 501</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < n; ++i) {</div>
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<div class="line"><a id="l00502" name="l00502"></a><span class="lineno"> 502</span> <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">auto</span> pair : integer_encoder->PartialDomainEncoding(vars[i])) {</div>
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<div class="line"><a id="l00503" name="l00503"></a><span class="lineno"> 503</span> mapping[i][pair.value.value()] = pair.literal;</div>
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<div class="line"><a id="l00504" name="l00504"></a><span class="lineno"> 504</span> }</div>
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<div class="line"><a id="l00505" name="l00505"></a><span class="lineno"> 505</span> }</div>
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<div class="line"><a id="l00506" name="l00506"></a><span class="lineno"> 506</span> </div>
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<div class="line"><a id="l00507" name="l00507"></a><span class="lineno"> 507</span> <span class="comment">// For each tuple, forbid the variables values to be this tuple.</span></div>
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<div class="line"><a id="l00508" name="l00508"></a><span class="lineno"> 508</span> std::vector<Literal> clause;</div>
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<div class="line"><a id="l00509" name="l00509"></a><span class="lineno"> 509</span> <span class="keywordflow">for</span> (<span class="keyword">const</span> std::vector<int64_t>& tuple : tuples) {</div>
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<div class="line"><a id="l00510" name="l00510"></a><span class="lineno"> 510</span> <span class="keywordtype">bool</span> add_tuple = <span class="keyword">true</span>;</div>
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<div class="line"><a id="l00511" name="l00511"></a><span class="lineno"> 511</span> clause.clear();</div>
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<div class="line"><a id="l00512" name="l00512"></a><span class="lineno"> 512</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < n; ++i) {</div>
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<div class="line"><a id="l00513" name="l00513"></a><span class="lineno"> 513</span> <span class="keyword">const</span> int64_t <a class="code hl_variable" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a> = tuple[i];</div>
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<div class="line"><a id="l00514" name="l00514"></a><span class="lineno"> 514</span> <span class="keywordflow">if</span> (<a class="code hl_variable" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a> == any_value) <span class="keywordflow">continue</span>;</div>
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<div class="line"><a id="l00515" name="l00515"></a><span class="lineno"> 515</span> </div>
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<div class="line"><a id="l00516" name="l00516"></a><span class="lineno"> 516</span> <span class="comment">// If a literal associated to var == value exist, use it, otherwise</span></div>
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<div class="line"><a id="l00517" name="l00517"></a><span class="lineno"> 517</span> <span class="comment">// just use (and eventually create) the two literals var >= value + 1</span></div>
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<div class="line"><a id="l00518" name="l00518"></a><span class="lineno"> 518</span> <span class="comment">// and var <= value - 1.</span></div>
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<div class="line"><a id="l00519" name="l00519"></a><span class="lineno"> 519</span> <span class="keywordflow">if</span> (mapping[i].contains(<a class="code hl_variable" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>)) {</div>
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<div class="line"><a id="l00520" name="l00520"></a><span class="lineno"> 520</span> clause.push_back(<a class="code hl_function" href="namespacegtl.html#a73f41ac11336b94768fdd41594153d59">gtl::FindOrDie</a>(mapping[i], <a class="code hl_variable" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>).Negated());</div>
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<div class="line"><a id="l00521" name="l00521"></a><span class="lineno"> 521</span> } <span class="keywordflow">else</span> {</div>
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<div class="line"><a id="l00522" name="l00522"></a><span class="lineno"> 522</span> <span class="keyword">const</span> int64_t lb = <a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->Get(<a class="code hl_function" href="namespaceoperations__research_1_1sat.html#a3ad49ae9019c528851f6fd084479a567">LowerBound</a>(vars[i]));</div>
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<div class="line"><a id="l00523" name="l00523"></a><span class="lineno"> 523</span> <span class="keyword">const</span> int64_t ub = <a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->Get(<a class="code hl_function" href="namespaceoperations__research_1_1sat.html#a9e815eb2193f1bb6903274c7f0859cd7">UpperBound</a>(vars[i]));</div>
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<div class="line"><a id="l00524" name="l00524"></a><span class="lineno"> 524</span> </div>
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<div class="line"><a id="l00525" name="l00525"></a><span class="lineno"> 525</span> <span class="comment">// TODO(user): test the full initial domain instead of just checking</span></div>
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<div class="line"><a id="l00526" name="l00526"></a><span class="lineno"> 526</span> <span class="comment">// the bounds. That shouldn't change too much since the literals added</span></div>
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<div class="line"><a id="l00527" name="l00527"></a><span class="lineno"> 527</span> <span class="comment">// below will be trivially true or false though.</span></div>
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<div class="line"><a id="l00528" name="l00528"></a><span class="lineno"> 528</span> <span class="keywordflow">if</span> (value < lb || value > ub) {</div>
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<div class="line"><a id="l00529" name="l00529"></a><span class="lineno"> 529</span> add_tuple = <span class="keyword">false</span>;</div>
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<div class="line"><a id="l00530" name="l00530"></a><span class="lineno"> 530</span> <span class="keywordflow">break</span>;</div>
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<div class="line"><a id="l00531" name="l00531"></a><span class="lineno"> 531</span> }</div>
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<div class="line"><a id="l00532" name="l00532"></a><span class="lineno"> 532</span> <span class="keywordflow">if</span> (<a class="code hl_variable" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a> > lb) {</div>
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<div class="line"><a id="l00533" name="l00533"></a><span class="lineno"> 533</span> clause.push_back(integer_encoder->GetOrCreateAssociatedLiteral(</div>
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<div class="line"><a id="l00534" name="l00534"></a><span class="lineno"> 534</span> <a class="code hl_function" href="structoperations__research_1_1sat_1_1_integer_literal.html#a3e2eb445631727dd4abf1d5343f16b2f">IntegerLiteral::LowerOrEqual</a>(vars[i], IntegerValue(<a class="code hl_variable" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a> - 1))));</div>
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<div class="line"><a id="l00535" name="l00535"></a><span class="lineno"> 535</span> }</div>
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<div class="line"><a id="l00536" name="l00536"></a><span class="lineno"> 536</span> <span class="keywordflow">if</span> (<a class="code hl_variable" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a> < ub) {</div>
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<div class="line"><a id="l00537" name="l00537"></a><span class="lineno"> 537</span> clause.push_back(integer_encoder->GetOrCreateAssociatedLiteral(</div>
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<div class="line"><a id="l00538" name="l00538"></a><span class="lineno"> 538</span> <a class="code hl_function" href="structoperations__research_1_1sat_1_1_integer_literal.html#a6c233aafac25ea66d69de93a83c9be63">IntegerLiteral::GreaterOrEqual</a>(vars[i],</div>
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<div class="line"><a id="l00539" name="l00539"></a><span class="lineno"> 539</span> IntegerValue(<a class="code hl_variable" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a> + 1))));</div>
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<div class="line"><a id="l00540" name="l00540"></a><span class="lineno"> 540</span> }</div>
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<div class="line"><a id="l00541" name="l00541"></a><span class="lineno"> 541</span> }</div>
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<div class="line"><a id="l00542" name="l00542"></a><span class="lineno"> 542</span> }</div>
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<div class="line"><a id="l00543" name="l00543"></a><span class="lineno"> 543</span> <span class="keywordflow">if</span> (add_tuple) <a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->Add(<a class="code hl_function" href="namespaceoperations__research_1_1sat.html#a37093a0df3cca500d5f58b1d5482bdc6">ClauseConstraint</a>(clause));</div>
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<div class="line"><a id="l00544" name="l00544"></a><span class="lineno"> 544</span> }</div>
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<div class="line"><a id="l00545" name="l00545"></a><span class="lineno"> 545</span>}</div>
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<div class="line"><a id="l00546" name="l00546"></a><span class="lineno"> 546</span> </div>
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<div class="line"><a id="l00547" name="l00547"></a><span class="lineno"><a class="line" href="namespaceoperations__research_1_1sat.html#a37b0e14e8d3650d11ce21a6b8d0a03ab"> 547</a></span>std::function<void(<a class="code hl_class" href="classoperations__research_1_1sat_1_1_model.html">Model</a>*)> <a class="code hl_function" href="namespaceoperations__research_1_1sat.html#a37b0e14e8d3650d11ce21a6b8d0a03ab">LiteralTableConstraint</a>(</div>
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<div class="line"><a id="l00548" name="l00548"></a><span class="lineno"> 548</span> <span class="keyword">const</span> std::vector<std::vector<Literal>>& literal_tuples,</div>
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<div class="line"><a id="l00549" name="l00549"></a><span class="lineno"> 549</span> <span class="keyword">const</span> std::vector<Literal>& line_literals) {</div>
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<div class="line"><a id="l00550" name="l00550"></a><span class="lineno"> 550</span> <span class="keywordflow">return</span> [=](<a class="code hl_class" href="classoperations__research_1_1sat_1_1_model.html">Model</a>* <a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>) {</div>
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<div class="line"><a id="l00551" name="l00551"></a><span class="lineno"> 551</span> <a class="code hl_define" href="base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b">CHECK_EQ</a>(literal_tuples.size(), line_literals.size());</div>
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<div class="line"><a id="l00552" name="l00552"></a><span class="lineno"> 552</span> <span class="keyword">const</span> <span class="keywordtype">int</span> num_tuples = line_literals.size();</div>
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<div class="line"><a id="l00553" name="l00553"></a><span class="lineno"> 553</span> <span class="keywordflow">if</span> (num_tuples == 0) <span class="keywordflow">return</span>;</div>
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<div class="line"><a id="l00554" name="l00554"></a><span class="lineno"> 554</span> <span class="keyword">const</span> <span class="keywordtype">int</span> tuple_size = literal_tuples[0].size();</div>
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<div class="line"><a id="l00555" name="l00555"></a><span class="lineno"> 555</span> <span class="keywordflow">if</span> (tuple_size == 0) <span class="keywordflow">return</span>;</div>
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<div class="line"><a id="l00556" name="l00556"></a><span class="lineno"> 556</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 1; i < num_tuples; ++i) {</div>
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<div class="line"><a id="l00557" name="l00557"></a><span class="lineno"> 557</span> <a class="code hl_define" href="base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b">CHECK_EQ</a>(tuple_size, literal_tuples[i].size());</div>
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<div class="line"><a id="l00558" name="l00558"></a><span class="lineno"> 558</span> }</div>
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<div class="line"><a id="l00559" name="l00559"></a><span class="lineno"> 559</span> </div>
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<div class="line"><a id="l00560" name="l00560"></a><span class="lineno"> 560</span> absl::flat_hash_map<LiteralIndex, std::vector<LiteralIndex>></div>
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<div class="line"><a id="l00561" name="l00561"></a><span class="lineno"> 561</span> line_literals_per_literal;</div>
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<div class="line"><a id="l00562" name="l00562"></a><span class="lineno"> 562</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < num_tuples; ++i) {</div>
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<div class="line"><a id="l00563" name="l00563"></a><span class="lineno"> 563</span> <span class="keyword">const</span> LiteralIndex selected_index = line_literals[i].Index();</div>
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<div class="line"><a id="l00564" name="l00564"></a><span class="lineno"> 564</span> <span class="keywordflow">for</span> (<span class="keyword">const</span> <a class="code hl_class" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a> l : literal_tuples[i]) {</div>
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<div class="line"><a id="l00565" name="l00565"></a><span class="lineno"> 565</span> line_literals_per_literal[l.Index()].push_back(selected_index);</div>
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<div class="line"><a id="l00566" name="l00566"></a><span class="lineno"> 566</span> }</div>
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<div class="line"><a id="l00567" name="l00567"></a><span class="lineno"> 567</span> }</div>
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<div class="line"><a id="l00568" name="l00568"></a><span class="lineno"> 568</span> </div>
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<div class="line"><a id="l00569" name="l00569"></a><span class="lineno"> 569</span> <span class="comment">// line_literals[i] == true => literal_tuples[i][j] == true.</span></div>
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<div class="line"><a id="l00570" name="l00570"></a><span class="lineno"> 570</span> <span class="comment">// literal_tuples[i][j] == false => line_literals[i] == false.</span></div>
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<div class="line"><a id="l00571" name="l00571"></a><span class="lineno"> 571</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < num_tuples; ++i) {</div>
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<div class="line"><a id="l00572" name="l00572"></a><span class="lineno"> 572</span> <span class="keyword">const</span> <a class="code hl_class" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a> line_is_selected = line_literals[i];</div>
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<div class="line"><a id="l00573" name="l00573"></a><span class="lineno"> 573</span> <span class="keywordflow">for</span> (<span class="keyword">const</span> <a class="code hl_class" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a> lit : literal_tuples[i]) {</div>
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<div class="line"><a id="l00574" name="l00574"></a><span class="lineno"> 574</span> <a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->Add(<a class="code hl_function" href="namespaceoperations__research_1_1sat.html#a6e056f4efb99b080ae5bdb7267339f59">Implication</a>(line_is_selected, lit));</div>
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<div class="line"><a id="l00575" name="l00575"></a><span class="lineno"> 575</span> }</div>
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<div class="line"><a id="l00576" name="l00576"></a><span class="lineno"> 576</span> }</div>
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<div class="line"><a id="l00577" name="l00577"></a><span class="lineno"> 577</span> </div>
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<div class="line"><a id="l00578" name="l00578"></a><span class="lineno"> 578</span> <span class="comment">// Exactly one selected literal is true.</span></div>
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<div class="line"><a id="l00579" name="l00579"></a><span class="lineno"> 579</span> <a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->Add(<a class="code hl_function" href="namespaceoperations__research_1_1sat.html#accfda9e32067da0a88da8e325cf39c7c">ExactlyOneConstraint</a>(line_literals));</div>
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<div class="line"><a id="l00580" name="l00580"></a><span class="lineno"> 580</span> </div>
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<div class="line"><a id="l00581" name="l00581"></a><span class="lineno"> 581</span> <span class="comment">// If all selected literals of the lines containing a literal are false,</span></div>
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<div class="line"><a id="l00582" name="l00582"></a><span class="lineno"> 582</span> <span class="comment">// then the literal is false.</span></div>
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<div class="line"><a id="l00583" name="l00583"></a><span class="lineno"> 583</span> <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">auto</span>& p : line_literals_per_literal) {</div>
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<div class="line"><a id="l00584" name="l00584"></a><span class="lineno"> 584</span> std::vector<Literal> clause;</div>
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<div class="line"><a id="l00585" name="l00585"></a><span class="lineno"> 585</span> <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">auto</span>& <a class="code hl_variable" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a> : p.second) {</div>
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<div class="line"><a id="l00586" name="l00586"></a><span class="lineno"> 586</span> clause.push_back(<a class="code hl_class" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a>(<a class="code hl_variable" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>));</div>
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<div class="line"><a id="l00587" name="l00587"></a><span class="lineno"> 587</span> }</div>
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<div class="line"><a id="l00588" name="l00588"></a><span class="lineno"> 588</span> clause.push_back(<a class="code hl_class" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a>(p.first).<a class="code hl_function" href="classoperations__research_1_1sat_1_1_literal.html#a886e9c024f7209181c0a850b6e90c644">Negated</a>());</div>
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<div class="line"><a id="l00589" name="l00589"></a><span class="lineno"> 589</span> <a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->Add(<a class="code hl_function" href="namespaceoperations__research_1_1sat.html#a37093a0df3cca500d5f58b1d5482bdc6">ClauseConstraint</a>(clause));</div>
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<div class="line"><a id="l00590" name="l00590"></a><span class="lineno"> 590</span> }</div>
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<div class="line"><a id="l00591" name="l00591"></a><span class="lineno"> 591</span> };</div>
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<div class="line"><a id="l00592" name="l00592"></a><span class="lineno"> 592</span>}</div>
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<div class="line"><a id="l00593" name="l00593"></a><span class="lineno"> 593</span> </div>
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<div class="line"><a id="l00594" name="l00594"></a><span class="lineno"><a class="line" href="namespaceoperations__research_1_1sat.html#ac0a34ced2e6cd6cdffe05f2d3fd7a9e8"> 594</a></span>std::function<void(<a class="code hl_class" href="classoperations__research_1_1sat_1_1_model.html">Model</a>*)> <a class="code hl_function" href="namespaceoperations__research_1_1sat.html#ac0a34ced2e6cd6cdffe05f2d3fd7a9e8">TransitionConstraint</a>(</div>
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<div class="line"><a id="l00595" name="l00595"></a><span class="lineno"> 595</span> <span class="keyword">const</span> std::vector<IntegerVariable>& vars,</div>
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<div class="line"><a id="l00596" name="l00596"></a><span class="lineno"> 596</span> <span class="keyword">const</span> std::vector<std::vector<int64_t>>& automaton, int64_t initial_state,</div>
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<div class="line"><a id="l00597" name="l00597"></a><span class="lineno"> 597</span> <span class="keyword">const</span> std::vector<int64_t>& final_states) {</div>
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<div class="line"><a id="l00598" name="l00598"></a><span class="lineno"> 598</span> <span class="keywordflow">return</span> [=](<a class="code hl_class" href="classoperations__research_1_1sat_1_1_model.html">Model</a>* <a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>) {</div>
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<div class="line"><a id="l00599" name="l00599"></a><span class="lineno"> 599</span> <a class="code hl_class" href="classoperations__research_1_1sat_1_1_integer_trail.html">IntegerTrail</a>* integer_trail = <a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->GetOrCreate<<a class="code hl_class" href="classoperations__research_1_1sat_1_1_integer_trail.html">IntegerTrail</a>>();</div>
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<div class="line"><a id="l00600" name="l00600"></a><span class="lineno"> 600</span> <span class="keyword">const</span> <span class="keywordtype">int</span> n = vars.size();</div>
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<div class="line"><a id="l00601" name="l00601"></a><span class="lineno"> 601</span> <a class="code hl_define" href="base_2logging_8h.html#a7e03ec13560fa94a8fea569960d7efc6">CHECK_GT</a>(n, 0) << <span class="stringliteral">"No variables in TransitionConstraint()."</span>;</div>
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<div class="line"><a id="l00602" name="l00602"></a><span class="lineno"> 602</span> </div>
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<div class="line"><a id="l00603" name="l00603"></a><span class="lineno"> 603</span> <span class="comment">// Test precondition.</span></div>
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<div class="line"><a id="l00604" name="l00604"></a><span class="lineno"> 604</span> {</div>
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<div class="line"><a id="l00605" name="l00605"></a><span class="lineno"> 605</span> std::set<std::pair<int64_t, int64_t>> unique_transition_checker;</div>
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<div class="line"><a id="l00606" name="l00606"></a><span class="lineno"> 606</span> <span class="keywordflow">for</span> (<span class="keyword">const</span> std::vector<int64_t>& transition : automaton) {</div>
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<div class="line"><a id="l00607" name="l00607"></a><span class="lineno"> 607</span> <a class="code hl_define" href="base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b">CHECK_EQ</a>(transition.size(), 3);</div>
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<div class="line"><a id="l00608" name="l00608"></a><span class="lineno"> 608</span> <span class="keyword">const</span> std::pair<int64_t, int64_t> p{transition[0], transition[1]};</div>
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<div class="line"><a id="l00609" name="l00609"></a><span class="lineno"> 609</span> <a class="code hl_define" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(!<a class="code hl_function" href="namespacegtl.html#aae28e97bd1fa93cb0032642550da7455">gtl::ContainsKey</a>(unique_transition_checker, p))</div>
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<div class="line"><a id="l00610" name="l00610"></a><span class="lineno"> 610</span> << <span class="stringliteral">"Duplicate outgoing transitions with value "</span> << transition[1]</div>
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<div class="line"><a id="l00611" name="l00611"></a><span class="lineno"> 611</span> << <span class="stringliteral">" from state "</span> << transition[0] << <span class="stringliteral">"."</span>;</div>
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<div class="line"><a id="l00612" name="l00612"></a><span class="lineno"> 612</span> unique_transition_checker.insert(p);</div>
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<div class="line"><a id="l00613" name="l00613"></a><span class="lineno"> 613</span> }</div>
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<div class="line"><a id="l00614" name="l00614"></a><span class="lineno"> 614</span> }</div>
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<div class="line"><a id="l00615" name="l00615"></a><span class="lineno"> 615</span> </div>
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<div class="line"><a id="l00616" name="l00616"></a><span class="lineno"> 616</span> <span class="comment">// Construct a table with the possible values of each vars.</span></div>
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<div class="line"><a id="l00617" name="l00617"></a><span class="lineno"> 617</span> std::vector<absl::flat_hash_set<int64_t>> possible_values(n);</div>
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<div class="line"><a id="l00618" name="l00618"></a><span class="lineno"> 618</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> <a class="code hl_variable" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a> = 0; <a class="code hl_variable" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a> < n; ++<a class="code hl_variable" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a>) {</div>
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<div class="line"><a id="l00619" name="l00619"></a><span class="lineno"> 619</span> <span class="keyword">const</span> <span class="keyword">auto</span> domain = integer_trail-><a class="code hl_function" href="classoperations__research_1_1sat_1_1_integer_trail.html#af4303d31360f06c50729f156b1fbc2a9">InitialVariableDomain</a>(vars[<a class="code hl_variable" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a>]);</div>
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<div class="line"><a id="l00620" name="l00620"></a><span class="lineno"> 620</span> <span class="keywordflow">for</span> (<span class="keyword">const</span> std::vector<int64_t>& transition : automaton) {</div>
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<div class="line"><a id="l00621" name="l00621"></a><span class="lineno"> 621</span> <span class="comment">// TODO(user): quadratic algo, improve!</span></div>
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<div class="line"><a id="l00622" name="l00622"></a><span class="lineno"> 622</span> <span class="keywordflow">if</span> (domain.Contains(transition[1])) {</div>
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<div class="line"><a id="l00623" name="l00623"></a><span class="lineno"> 623</span> possible_values[<a class="code hl_variable" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a>].insert(transition[1]);</div>
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<div class="line"><a id="l00624" name="l00624"></a><span class="lineno"> 624</span> }</div>
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<div class="line"><a id="l00625" name="l00625"></a><span class="lineno"> 625</span> }</div>
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<div class="line"><a id="l00626" name="l00626"></a><span class="lineno"> 626</span> }</div>
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<div class="line"><a id="l00627" name="l00627"></a><span class="lineno"> 627</span> </div>
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<div class="line"><a id="l00628" name="l00628"></a><span class="lineno"> 628</span> <span class="comment">// Compute the set of reachable state at each time point.</span></div>
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<div class="line"><a id="l00629" name="l00629"></a><span class="lineno"> 629</span> std::vector<std::set<int64_t>> reachable_states(n + 1);</div>
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<div class="line"><a id="l00630" name="l00630"></a><span class="lineno"> 630</span> reachable_states[0].insert(initial_state);</div>
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<div class="line"><a id="l00631" name="l00631"></a><span class="lineno"> 631</span> reachable_states[n] = {final_states.begin(), final_states.end()};</div>
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<div class="line"><a id="l00632" name="l00632"></a><span class="lineno"> 632</span> </div>
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<div class="line"><a id="l00633" name="l00633"></a><span class="lineno"> 633</span> <span class="comment">// Forward.</span></div>
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<div class="line"><a id="l00634" name="l00634"></a><span class="lineno"> 634</span> <span class="comment">//</span></div>
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<div class="line"><a id="l00635" name="l00635"></a><span class="lineno"> 635</span> <span class="comment">// TODO(user): filter using the domain of vars[time] that may not contain</span></div>
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<div class="line"><a id="l00636" name="l00636"></a><span class="lineno"> 636</span> <span class="comment">// all the possible transitions.</span></div>
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<div class="line"><a id="l00637" name="l00637"></a><span class="lineno"> 637</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> <a class="code hl_variable" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a> = 0; <a class="code hl_variable" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a> + 1 < n; ++<a class="code hl_variable" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a>) {</div>
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<div class="line"><a id="l00638" name="l00638"></a><span class="lineno"> 638</span> <span class="keywordflow">for</span> (<span class="keyword">const</span> std::vector<int64_t>& transition : automaton) {</div>
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<div class="line"><a id="l00639" name="l00639"></a><span class="lineno"> 639</span> <span class="keywordflow">if</span> (!<a class="code hl_function" href="namespacegtl.html#aae28e97bd1fa93cb0032642550da7455">gtl::ContainsKey</a>(reachable_states[<a class="code hl_variable" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a>], transition[0])) <span class="keywordflow">continue</span>;</div>
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<div class="line"><a id="l00640" name="l00640"></a><span class="lineno"> 640</span> <span class="keywordflow">if</span> (!<a class="code hl_function" href="namespacegtl.html#aae28e97bd1fa93cb0032642550da7455">gtl::ContainsKey</a>(possible_values[<a class="code hl_variable" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a>], transition[1])) <span class="keywordflow">continue</span>;</div>
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<div class="line"><a id="l00641" name="l00641"></a><span class="lineno"> 641</span> reachable_states[<a class="code hl_variable" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a> + 1].insert(transition[2]);</div>
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<div class="line"><a id="l00642" name="l00642"></a><span class="lineno"> 642</span> }</div>
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<div class="line"><a id="l00643" name="l00643"></a><span class="lineno"> 643</span> }</div>
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<div class="line"><a id="l00644" name="l00644"></a><span class="lineno"> 644</span> </div>
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<div class="line"><a id="l00645" name="l00645"></a><span class="lineno"> 645</span> <span class="comment">// Backward.</span></div>
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<div class="line"><a id="l00646" name="l00646"></a><span class="lineno"> 646</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> <a class="code hl_variable" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a> = n - 1; <a class="code hl_variable" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a> > 0; --<a class="code hl_variable" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a>) {</div>
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<div class="line"><a id="l00647" name="l00647"></a><span class="lineno"> 647</span> std::set<int64_t> new_set;</div>
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<div class="line"><a id="l00648" name="l00648"></a><span class="lineno"> 648</span> <span class="keywordflow">for</span> (<span class="keyword">const</span> std::vector<int64_t>& transition : automaton) {</div>
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<div class="line"><a id="l00649" name="l00649"></a><span class="lineno"> 649</span> <span class="keywordflow">if</span> (!<a class="code hl_function" href="namespacegtl.html#aae28e97bd1fa93cb0032642550da7455">gtl::ContainsKey</a>(reachable_states[<a class="code hl_variable" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a>], transition[0])) <span class="keywordflow">continue</span>;</div>
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<div class="line"><a id="l00650" name="l00650"></a><span class="lineno"> 650</span> <span class="keywordflow">if</span> (!<a class="code hl_function" href="namespacegtl.html#aae28e97bd1fa93cb0032642550da7455">gtl::ContainsKey</a>(possible_values[<a class="code hl_variable" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a>], transition[1])) <span class="keywordflow">continue</span>;</div>
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<div class="line"><a id="l00651" name="l00651"></a><span class="lineno"> 651</span> <span class="keywordflow">if</span> (!<a class="code hl_function" href="namespacegtl.html#aae28e97bd1fa93cb0032642550da7455">gtl::ContainsKey</a>(reachable_states[<a class="code hl_variable" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a> + 1], transition[2]))</div>
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<div class="line"><a id="l00652" name="l00652"></a><span class="lineno"> 652</span> <span class="keywordflow">continue</span>;</div>
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<div class="line"><a id="l00653" name="l00653"></a><span class="lineno"> 653</span> new_set.insert(transition[0]);</div>
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<div class="line"><a id="l00654" name="l00654"></a><span class="lineno"> 654</span> }</div>
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<div class="line"><a id="l00655" name="l00655"></a><span class="lineno"> 655</span> reachable_states[<a class="code hl_variable" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a>].swap(new_set);</div>
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<div class="line"><a id="l00656" name="l00656"></a><span class="lineno"> 656</span> }</div>
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|
<div class="line"><a id="l00657" name="l00657"></a><span class="lineno"> 657</span> </div>
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<div class="line"><a id="l00658" name="l00658"></a><span class="lineno"> 658</span> <span class="comment">// We will model at each time step the current automaton state using Boolean</span></div>
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|
<div class="line"><a id="l00659" name="l00659"></a><span class="lineno"> 659</span> <span class="comment">// variables. We will have n+1 time step. At time zero, we start in the</span></div>
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<div class="line"><a id="l00660" name="l00660"></a><span class="lineno"> 660</span> <span class="comment">// initial state, and at time n we should be in one of the final states. We</span></div>
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<div class="line"><a id="l00661" name="l00661"></a><span class="lineno"> 661</span> <span class="comment">// don't need to create Booleans at at time when there is just one possible</span></div>
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|
<div class="line"><a id="l00662" name="l00662"></a><span class="lineno"> 662</span> <span class="comment">// state (like at time zero).</span></div>
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|
<div class="line"><a id="l00663" name="l00663"></a><span class="lineno"> 663</span> absl::flat_hash_map<IntegerValue, Literal> encoding;</div>
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<div class="line"><a id="l00664" name="l00664"></a><span class="lineno"> 664</span> absl::flat_hash_map<IntegerValue, Literal> in_encoding;</div>
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<div class="line"><a id="l00665" name="l00665"></a><span class="lineno"> 665</span> absl::flat_hash_map<IntegerValue, Literal> out_encoding;</div>
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<div class="line"><a id="l00666" name="l00666"></a><span class="lineno"> 666</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> <a class="code hl_variable" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a> = 0; <a class="code hl_variable" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a> < n; ++<a class="code hl_variable" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a>) {</div>
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<div class="line"><a id="l00667" name="l00667"></a><span class="lineno"> 667</span> <span class="comment">// All these vector have the same size. We will use them to enforce a</span></div>
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|
<div class="line"><a id="l00668" name="l00668"></a><span class="lineno"> 668</span> <span class="comment">// local table constraint representing one step of the automaton at the</span></div>
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<div class="line"><a id="l00669" name="l00669"></a><span class="lineno"> 669</span> <span class="comment">// given time.</span></div>
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<div class="line"><a id="l00670" name="l00670"></a><span class="lineno"> 670</span> std::vector<Literal> tuple_literals;</div>
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<div class="line"><a id="l00671" name="l00671"></a><span class="lineno"> 671</span> std::vector<IntegerValue> in_states;</div>
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<div class="line"><a id="l00672" name="l00672"></a><span class="lineno"> 672</span> std::vector<IntegerValue> transition_values;</div>
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<div class="line"><a id="l00673" name="l00673"></a><span class="lineno"> 673</span> std::vector<IntegerValue> out_states;</div>
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<div class="line"><a id="l00674" name="l00674"></a><span class="lineno"> 674</span> <span class="keywordflow">for</span> (<span class="keyword">const</span> std::vector<int64_t>& transition : automaton) {</div>
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<div class="line"><a id="l00675" name="l00675"></a><span class="lineno"> 675</span> <span class="keywordflow">if</span> (!<a class="code hl_function" href="namespacegtl.html#aae28e97bd1fa93cb0032642550da7455">gtl::ContainsKey</a>(reachable_states[<a class="code hl_variable" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a>], transition[0])) <span class="keywordflow">continue</span>;</div>
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<div class="line"><a id="l00676" name="l00676"></a><span class="lineno"> 676</span> <span class="keywordflow">if</span> (!<a class="code hl_function" href="namespacegtl.html#aae28e97bd1fa93cb0032642550da7455">gtl::ContainsKey</a>(possible_values[<a class="code hl_variable" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a>], transition[1])) <span class="keywordflow">continue</span>;</div>
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|
<div class="line"><a id="l00677" name="l00677"></a><span class="lineno"> 677</span> <span class="keywordflow">if</span> (!<a class="code hl_function" href="namespacegtl.html#aae28e97bd1fa93cb0032642550da7455">gtl::ContainsKey</a>(reachable_states[<a class="code hl_variable" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a> + 1], transition[2]))</div>
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|
<div class="line"><a id="l00678" name="l00678"></a><span class="lineno"> 678</span> <span class="keywordflow">continue</span>;</div>
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|
<div class="line"><a id="l00679" name="l00679"></a><span class="lineno"> 679</span> </div>
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<div class="line"><a id="l00680" name="l00680"></a><span class="lineno"> 680</span> <span class="comment">// TODO(user): if this transition correspond to just one in-state or</span></div>
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|
<div class="line"><a id="l00681" name="l00681"></a><span class="lineno"> 681</span> <span class="comment">// one-out state or one variable value, we could reuse the corresponding</span></div>
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|
<div class="line"><a id="l00682" name="l00682"></a><span class="lineno"> 682</span> <span class="comment">// Boolean variable instead of creating a new one!</span></div>
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|
<div class="line"><a id="l00683" name="l00683"></a><span class="lineno"> 683</span> tuple_literals.push_back(</div>
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|
<div class="line"><a id="l00684" name="l00684"></a><span class="lineno"> 684</span> <a class="code hl_class" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a>(<a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->Add(<a class="code hl_function" href="namespaceoperations__research_1_1sat.html#a3cb95842130bc03177260ad20464bdbf">NewBooleanVariable</a>()), <span class="keyword">true</span>));</div>
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|
<div class="line"><a id="l00685" name="l00685"></a><span class="lineno"> 685</span> in_states.push_back(IntegerValue(transition[0]));</div>
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|
<div class="line"><a id="l00686" name="l00686"></a><span class="lineno"> 686</span> </div>
|
|
<div class="line"><a id="l00687" name="l00687"></a><span class="lineno"> 687</span> transition_values.push_back(IntegerValue(transition[1]));</div>
|
|
<div class="line"><a id="l00688" name="l00688"></a><span class="lineno"> 688</span> </div>
|
|
<div class="line"><a id="l00689" name="l00689"></a><span class="lineno"> 689</span> <span class="comment">// On the last step we don't need to distinguish the output states, so</span></div>
|
|
<div class="line"><a id="l00690" name="l00690"></a><span class="lineno"> 690</span> <span class="comment">// we use zero.</span></div>
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|
<div class="line"><a id="l00691" name="l00691"></a><span class="lineno"> 691</span> out_states.push_back(<a class="code hl_variable" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a> + 1 == n ? IntegerValue(0)</div>
|
|
<div class="line"><a id="l00692" name="l00692"></a><span class="lineno"> 692</span> : IntegerValue(transition[2]));</div>
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|
<div class="line"><a id="l00693" name="l00693"></a><span class="lineno"> 693</span> }</div>
|
|
<div class="line"><a id="l00694" name="l00694"></a><span class="lineno"> 694</span> </div>
|
|
<div class="line"><a id="l00695" name="l00695"></a><span class="lineno"> 695</span> <span class="comment">// Fully instantiate vars[time].</span></div>
|
|
<div class="line"><a id="l00696" name="l00696"></a><span class="lineno"> 696</span> <span class="comment">// Tricky: because we started adding constraints that can propagate, the</span></div>
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|
<div class="line"><a id="l00697" name="l00697"></a><span class="lineno"> 697</span> <span class="comment">// possible values returned by encoding might not contains all the value</span></div>
|
|
<div class="line"><a id="l00698" name="l00698"></a><span class="lineno"> 698</span> <span class="comment">// computed in transition_values.</span></div>
|
|
<div class="line"><a id="l00699" name="l00699"></a><span class="lineno"> 699</span> {</div>
|
|
<div class="line"><a id="l00700" name="l00700"></a><span class="lineno"> 700</span> std::vector<IntegerValue> s = transition_values;</div>
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|
<div class="line"><a id="l00701" name="l00701"></a><span class="lineno"> 701</span> <a class="code hl_function" href="namespacegtl.html#a288a1dc92da5d3ad62d4bc4cec9e8b1d">gtl::STLSortAndRemoveDuplicates</a>(&s);</div>
|
|
<div class="line"><a id="l00702" name="l00702"></a><span class="lineno"> 702</span> </div>
|
|
<div class="line"><a id="l00703" name="l00703"></a><span class="lineno"> 703</span> encoding.clear();</div>
|
|
<div class="line"><a id="l00704" name="l00704"></a><span class="lineno"> 704</span> <span class="keywordflow">if</span> (s.size() > 1) {</div>
|
|
<div class="line"><a id="l00705" name="l00705"></a><span class="lineno"> 705</span> std::vector<int64_t> values;</div>
|
|
<div class="line"><a id="l00706" name="l00706"></a><span class="lineno"> 706</span> values.reserve(s.size());</div>
|
|
<div class="line"><a id="l00707" name="l00707"></a><span class="lineno"> 707</span> <span class="keywordflow">for</span> (IntegerValue v : s) values.push_back(v.value());</div>
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|
<div class="line"><a id="l00708" name="l00708"></a><span class="lineno"> 708</span> integer_trail-><a class="code hl_function" href="classoperations__research_1_1sat_1_1_integer_trail.html#af931801f592e954a6623cab8cf9a4485">UpdateInitialDomain</a>(vars[<a class="code hl_variable" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a>],</div>
|
|
<div class="line"><a id="l00709" name="l00709"></a><span class="lineno"> 709</span> <a class="code hl_function" href="classoperations__research_1_1_domain.html#ac2d88de67793063ad5f5e923ffd1c0eb">Domain::FromValues</a>(values));</div>
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|
<div class="line"><a id="l00710" name="l00710"></a><span class="lineno"> 710</span> <a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->Add(<a class="code hl_function" href="namespaceoperations__research_1_1sat.html#ae282013f2321b5817fd61ad9e705e446">FullyEncodeVariable</a>(vars[<a class="code hl_variable" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a>]));</div>
|
|
<div class="line"><a id="l00711" name="l00711"></a><span class="lineno"> 711</span> encoding = GetEncoding(vars[<a class="code hl_variable" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a>], <a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>);</div>
|
|
<div class="line"><a id="l00712" name="l00712"></a><span class="lineno"> 712</span> } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a id="l00713" name="l00713"></a><span class="lineno"> 713</span> <span class="comment">// Fix vars[time] to its unique possible value.</span></div>
|
|
<div class="line"><a id="l00714" name="l00714"></a><span class="lineno"> 714</span> <a class="code hl_define" href="base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b">CHECK_EQ</a>(s.size(), 1);</div>
|
|
<div class="line"><a id="l00715" name="l00715"></a><span class="lineno"> 715</span> <span class="keyword">const</span> int64_t unique_value = s.begin()->value();</div>
|
|
<div class="line"><a id="l00716" name="l00716"></a><span class="lineno"> 716</span> <a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->Add(<a class="code hl_function" href="namespaceoperations__research_1_1sat.html#a3f35d207f7fbd9abc30ced851352b069">LowerOrEqual</a>(vars[<a class="code hl_variable" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a>], unique_value));</div>
|
|
<div class="line"><a id="l00717" name="l00717"></a><span class="lineno"> 717</span> <a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->Add(<a class="code hl_function" href="namespaceoperations__research_1_1sat.html#ab3ba1ab2a4a6cdc0ea4324d409ddbe7e">GreaterOrEqual</a>(vars[<a class="code hl_variable" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a>], unique_value));</div>
|
|
<div class="line"><a id="l00718" name="l00718"></a><span class="lineno"> 718</span> }</div>
|
|
<div class="line"><a id="l00719" name="l00719"></a><span class="lineno"> 719</span> }</div>
|
|
<div class="line"><a id="l00720" name="l00720"></a><span class="lineno"> 720</span> </div>
|
|
<div class="line"><a id="l00721" name="l00721"></a><span class="lineno"> 721</span> <span class="comment">// For each possible out states, create one Boolean variable.</span></div>
|
|
<div class="line"><a id="l00722" name="l00722"></a><span class="lineno"> 722</span> {</div>
|
|
<div class="line"><a id="l00723" name="l00723"></a><span class="lineno"> 723</span> std::vector<IntegerValue> s = out_states;</div>
|
|
<div class="line"><a id="l00724" name="l00724"></a><span class="lineno"> 724</span> <a class="code hl_function" href="namespacegtl.html#a288a1dc92da5d3ad62d4bc4cec9e8b1d">gtl::STLSortAndRemoveDuplicates</a>(&s);</div>
|
|
<div class="line"><a id="l00725" name="l00725"></a><span class="lineno"> 725</span> </div>
|
|
<div class="line"><a id="l00726" name="l00726"></a><span class="lineno"> 726</span> out_encoding.clear();</div>
|
|
<div class="line"><a id="l00727" name="l00727"></a><span class="lineno"> 727</span> <span class="keywordflow">if</span> (s.size() == 2) {</div>
|
|
<div class="line"><a id="l00728" name="l00728"></a><span class="lineno"> 728</span> <span class="keyword">const</span> BooleanVariable <a class="code hl_variable" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> = <a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->Add(<a class="code hl_function" href="namespaceoperations__research_1_1sat.html#a3cb95842130bc03177260ad20464bdbf">NewBooleanVariable</a>());</div>
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|
<div class="line"><a id="l00729" name="l00729"></a><span class="lineno"> 729</span> out_encoding[s.front()] = <a class="code hl_class" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a>(<a class="code hl_variable" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, <span class="keyword">true</span>);</div>
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|
<div class="line"><a id="l00730" name="l00730"></a><span class="lineno"> 730</span> out_encoding[s.back()] = <a class="code hl_class" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a>(<a class="code hl_variable" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, <span class="keyword">false</span>);</div>
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|
<div class="line"><a id="l00731" name="l00731"></a><span class="lineno"> 731</span> } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (s.size() > 1) {</div>
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|
<div class="line"><a id="l00732" name="l00732"></a><span class="lineno"> 732</span> <span class="keywordflow">for</span> (<span class="keyword">const</span> IntegerValue state : s) {</div>
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|
<div class="line"><a id="l00733" name="l00733"></a><span class="lineno"> 733</span> <span class="keyword">const</span> <a class="code hl_class" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a> l = <a class="code hl_class" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a>(<a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->Add(<a class="code hl_function" href="namespaceoperations__research_1_1sat.html#a3cb95842130bc03177260ad20464bdbf">NewBooleanVariable</a>()), <span class="keyword">true</span>);</div>
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|
<div class="line"><a id="l00734" name="l00734"></a><span class="lineno"> 734</span> out_encoding[state] = l;</div>
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|
<div class="line"><a id="l00735" name="l00735"></a><span class="lineno"> 735</span> }</div>
|
|
<div class="line"><a id="l00736" name="l00736"></a><span class="lineno"> 736</span> }</div>
|
|
<div class="line"><a id="l00737" name="l00737"></a><span class="lineno"> 737</span> }</div>
|
|
<div class="line"><a id="l00738" name="l00738"></a><span class="lineno"> 738</span> </div>
|
|
<div class="line"><a id="l00739" name="l00739"></a><span class="lineno"> 739</span> <span class="comment">// Now we link everything together.</span></div>
|
|
<div class="line"><a id="l00740" name="l00740"></a><span class="lineno"> 740</span> <span class="comment">//</span></div>
|
|
<div class="line"><a id="l00741" name="l00741"></a><span class="lineno"> 741</span> <span class="comment">// Note that we do not need the ExactlyOneConstraint(tuple_literals)</span></div>
|
|
<div class="line"><a id="l00742" name="l00742"></a><span class="lineno"> 742</span> <span class="comment">// because it is already implicitely encoded since we have exactly one</span></div>
|
|
<div class="line"><a id="l00743" name="l00743"></a><span class="lineno"> 743</span> <span class="comment">// transition value.</span></div>
|
|
<div class="line"><a id="l00744" name="l00744"></a><span class="lineno"> 744</span> <span class="keywordflow">if</span> (!in_encoding.empty()) {</div>
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|
<div class="line"><a id="l00745" name="l00745"></a><span class="lineno"> 745</span> ProcessOneColumn(tuple_literals, in_states, in_encoding, {}, <a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>);</div>
|
|
<div class="line"><a id="l00746" name="l00746"></a><span class="lineno"> 746</span> }</div>
|
|
<div class="line"><a id="l00747" name="l00747"></a><span class="lineno"> 747</span> <span class="keywordflow">if</span> (!encoding.empty()) {</div>
|
|
<div class="line"><a id="l00748" name="l00748"></a><span class="lineno"> 748</span> ProcessOneColumn(tuple_literals, transition_values, encoding, {},</div>
|
|
<div class="line"><a id="l00749" name="l00749"></a><span class="lineno"> 749</span> <a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>);</div>
|
|
<div class="line"><a id="l00750" name="l00750"></a><span class="lineno"> 750</span> }</div>
|
|
<div class="line"><a id="l00751" name="l00751"></a><span class="lineno"> 751</span> <span class="keywordflow">if</span> (!out_encoding.empty()) {</div>
|
|
<div class="line"><a id="l00752" name="l00752"></a><span class="lineno"> 752</span> ProcessOneColumn(tuple_literals, out_states, out_encoding, {}, <a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>);</div>
|
|
<div class="line"><a id="l00753" name="l00753"></a><span class="lineno"> 753</span> }</div>
|
|
<div class="line"><a id="l00754" name="l00754"></a><span class="lineno"> 754</span> in_encoding = out_encoding;</div>
|
|
<div class="line"><a id="l00755" name="l00755"></a><span class="lineno"> 755</span> }</div>
|
|
<div class="line"><a id="l00756" name="l00756"></a><span class="lineno"> 756</span> };</div>
|
|
<div class="line"><a id="l00757" name="l00757"></a><span class="lineno"> 757</span>}</div>
|
|
<div class="line"><a id="l00758" name="l00758"></a><span class="lineno"> 758</span> </div>
|
|
<div class="line"><a id="l00759" name="l00759"></a><span class="lineno"> 759</span>} <span class="comment">// namespace sat</span></div>
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|
<div class="line"><a id="l00760" name="l00760"></a><span class="lineno"> 760</span>} <span class="comment">// namespace operations_research</span></div>
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|
<div class="ttc" id="aalldiff__cst_8cc_html_ad10edae0a852d72fb76afb1c77735045"><div class="ttname"><a href="alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045">min</a></div><div class="ttdeci">int64_t min</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"><div class="ttname"><a href="base_2logging_8h.html">logging.h</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#l00491">base/logging.h:491</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#l00698">base/logging.h:698</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#l00703">base/logging.h:703</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#l00979">base/logging.h:979</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_domain_html_a22c6c2f121586b5d76feb4b0e536dfde"><div class="ttname"><a href="classoperations__research_1_1_domain.html#a22c6c2f121586b5d76feb4b0e536dfde">operations_research::Domain::Contains</a></div><div class="ttdeci">bool Contains(int64_t 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#l00236">sorted_interval_list.cc:236</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_domain_html_ac2d88de67793063ad5f5e923ffd1c0eb"><div class="ttname"><a href="classoperations__research_1_1_domain.html#ac2d88de67793063ad5f5e923ffd1c0eb">operations_research::Domain::FromValues</a></div><div class="ttdeci">static Domain FromValues(std::vector< int64_t > values)</div><div class="ttdoc">Creates a domain from the union of an unsorted list of integer values.</div><div class="ttdef"><b>Definition:</b> <a href="sorted__interval__list_8cc_source.html#l00138">sorted_interval_list.cc:138</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_integer_encoder_html"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_integer_encoder.html">operations_research::sat::IntegerEncoder</a></div><div class="ttdef"><b>Definition:</b> <a href="integer_8h_source.html#l00306">integer.h:306</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_integer_trail_html"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_integer_trail.html">operations_research::sat::IntegerTrail</a></div><div class="ttdef"><b>Definition:</b> <a href="integer_8h_source.html#l00574">integer.h:574</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_integer_trail_html_af4303d31360f06c50729f156b1fbc2a9"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_integer_trail.html#af4303d31360f06c50729f156b1fbc2a9">operations_research::sat::IntegerTrail::InitialVariableDomain</a></div><div class="ttdeci">const Domain & InitialVariableDomain(IntegerVariable var) const</div><div class="ttdef"><b>Definition:</b> <a href="integer_8cc_source.html#l00682">integer.cc:682</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_integer_trail_html_af931801f592e954a6623cab8cf9a4485"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_integer_trail.html#af931801f592e954a6623cab8cf9a4485">operations_research::sat::IntegerTrail::UpdateInitialDomain</a></div><div class="ttdeci">bool UpdateInitialDomain(IntegerVariable var, Domain domain)</div><div class="ttdef"><b>Definition:</b> <a href="integer_8cc_source.html#l00686">integer.cc:686</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_literal_html"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_literal.html">operations_research::sat::Literal</a></div><div class="ttdef"><b>Definition:</b> <a href="sat__base_8h_source.html#l00065">sat_base.h:65</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_literal_html_a886e9c024f7209181c0a850b6e90c644"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_literal.html#a886e9c024f7209181c0a850b6e90c644">operations_research::sat::Literal::Negated</a></div><div class="ttdeci">Literal Negated() const</div><div class="ttdef"><b>Definition:</b> <a href="sat__base_8h_source.html#l00092">sat_base.h:92</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_model_html"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_model.html">operations_research::sat::Model</a></div><div class="ttdoc">Class that owns everything related to a particular optimization model.</div><div class="ttdef"><b>Definition:</b> <a href="sat_2model_8h_source.html#l00038">sat/model.h:38</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_sat_solver_html"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_sat_solver.html">operations_research::sat::SatSolver</a></div><div class="ttdef"><b>Definition:</b> <a href="sat__solver_8h_source.html#l00058">sat_solver.h:58</a></div></div>
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<div class="ttc" id="ademon__profiler_8cc_html_ac072af30c4ffbc834bb4c681f6ecb514"><div class="ttname"><a href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a></div><div class="ttdeci">int64_t value</div><div class="ttdef"><b>Definition:</b> <a href="demon__profiler_8cc_source.html#l00044">demon_profiler.cc:44</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#l01874">expr_array.cc:1874</a></div></div>
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<div class="ttc" id="agurobi__interface_8cc_html_a0728f23c9a47655d38e0bf1a2f200bcf"><div class="ttname"><a href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a></div><div class="ttdeci">GRBmodel * model</div><div class="ttdef"><b>Definition:</b> <a href="gurobi__interface_8cc_source.html#l00273">gurobi_interface.cc:273</a></div></div>
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<div class="ttc" id="aint__type_8h_html"><div class="ttname"><a href="int__type_8h.html">int_type.h</a></div></div>
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<div class="ttc" id="amap__util_8h_html"><div class="ttname"><a href="map__util_8h.html">map_util.h</a></div></div>
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<div class="ttc" id="anamespacegtl_html_a288a1dc92da5d3ad62d4bc4cec9e8b1d"><div class="ttname"><a href="namespacegtl.html#a288a1dc92da5d3ad62d4bc4cec9e8b1d">gtl::STLSortAndRemoveDuplicates</a></div><div class="ttdeci">void STLSortAndRemoveDuplicates(T *v, const LessFunc &less_func)</div><div class="ttdef"><b>Definition:</b> <a href="stl__util_8h_source.html#l00058">stl_util.h:58</a></div></div>
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<div class="ttc" id="anamespacegtl_html_a73f41ac11336b94768fdd41594153d59"><div class="ttname"><a href="namespacegtl.html#a73f41ac11336b94768fdd41594153d59">gtl::FindOrDie</a></div><div class="ttdeci">const Collection::value_type::second_type & FindOrDie(const Collection &collection, const typename Collection::value_type::first_type &key)</div><div class="ttdef"><b>Definition:</b> <a href="map__util_8h_source.html#l00206">map_util.h:206</a></div></div>
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<div class="ttc" id="anamespacegtl_html_aae28e97bd1fa93cb0032642550da7455"><div class="ttname"><a href="namespacegtl.html#aae28e97bd1fa93cb0032642550da7455">gtl::ContainsKey</a></div><div class="ttdeci">bool ContainsKey(const Collection &collection, const Key &key)</div><div class="ttdef"><b>Definition:</b> <a href="map__util_8h_source.html#l00200">map_util.h:200</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1math__opt_html_a5de89a1f6e3f80a49a0d76136d8044e2"><div class="ttname"><a href="namespaceoperations__research_1_1math__opt.html#a5de89a1f6e3f80a49a0d76136d8044e2">operations_research::math_opt::swap</a></div><div class="ttdeci">void swap(IdMap< K, V > &a, IdMap< K, V > &b)</div><div class="ttdef"><b>Definition:</b> <a href="id__map_8h_source.html#l00263">id_map.h:263</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_a15784ff0c35105c45925c9fbe29121d1"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#a15784ff0c35105c45925c9fbe29121d1">operations_research::sat::AddTableConstraint</a></div><div class="ttdeci">void AddTableConstraint(absl::Span< const IntegerVariable > vars, std::vector< std::vector< int64_t > > tuples, Model *model)</div><div class="ttdef"><b>Definition:</b> <a href="sat_2table_8cc_source.html#l00250">sat/table.cc:250</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_a37093a0df3cca500d5f58b1d5482bdc6"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#a37093a0df3cca500d5f58b1d5482bdc6">operations_research::sat::ClauseConstraint</a></div><div class="ttdeci">std::function< void(Model *)> ClauseConstraint(absl::Span< const Literal > literals)</div><div class="ttdef"><b>Definition:</b> <a href="sat__solver_8h_source.html#l00906">sat_solver.h:906</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_a37b0e14e8d3650d11ce21a6b8d0a03ab"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#a37b0e14e8d3650d11ce21a6b8d0a03ab">operations_research::sat::LiteralTableConstraint</a></div><div class="ttdeci">std::function< void(Model *)> LiteralTableConstraint(const std::vector< std::vector< Literal > > &literal_tuples, const std::vector< Literal > &line_literals)</div><div class="ttdef"><b>Definition:</b> <a href="sat_2table_8cc_source.html#l00547">sat/table.cc:547</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_a3ad49ae9019c528851f6fd084479a567"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#a3ad49ae9019c528851f6fd084479a567">operations_research::sat::LowerBound</a></div><div class="ttdeci">std::function< int64_t(const Model &)> LowerBound(IntegerVariable v)</div><div class="ttdef"><b>Definition:</b> <a href="integer_8h_source.html#l01524">integer.h:1524</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_a3cb95842130bc03177260ad20464bdbf"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#a3cb95842130bc03177260ad20464bdbf">operations_research::sat::NewBooleanVariable</a></div><div class="ttdeci">std::function< BooleanVariable(Model *)> NewBooleanVariable()</div><div class="ttdef"><b>Definition:</b> <a href="integer_8h_source.html#l01469">integer.h:1469</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_a3e5f39b52251ad02e571592493b4d39f"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#a3e5f39b52251ad02e571592493b4d39f">operations_research::sat::CompressTuples</a></div><div class="ttdeci">void CompressTuples(absl::Span< const int64_t > domain_sizes, int64_t any_value, std::vector< std::vector< int64_t > > *tuples)</div><div class="ttdef"><b>Definition:</b> <a href="sat_2util_8cc_source.html#l00113">sat/util.cc:113</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_a3f35d207f7fbd9abc30ced851352b069"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#a3f35d207f7fbd9abc30ced851352b069">operations_research::sat::LowerOrEqual</a></div><div class="ttdeci">std::function< void(Model *)> LowerOrEqual(IntegerVariable v, int64_t ub)</div><div class="ttdef"><b>Definition:</b> <a href="integer_8h_source.html#l01567">integer.h:1567</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_a6e056f4efb99b080ae5bdb7267339f59"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#a6e056f4efb99b080ae5bdb7267339f59">operations_research::sat::Implication</a></div><div class="ttdeci">std::function< void(Model *)> Implication(const std::vector< Literal > &enforcement_literals, IntegerLiteral i)</div><div class="ttdef"><b>Definition:</b> <a href="integer_8h_source.html#l01595">integer.h:1595</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_a77234dab48516b8bceef7fbf4744bba1"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#a77234dab48516b8bceef7fbf4744bba1">operations_research::sat::AddNegatedTableConstraint</a></div><div class="ttdeci">void AddNegatedTableConstraint(absl::Span< const IntegerVariable > vars, std::vector< std::vector< int64_t > > tuples, Model *model)</div><div class="ttdef"><b>Definition:</b> <a href="sat_2table_8cc_source.html#l00460">sat/table.cc:460</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_a9e815eb2193f1bb6903274c7f0859cd7"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#a9e815eb2193f1bb6903274c7f0859cd7">operations_research::sat::UpperBound</a></div><div class="ttdeci">std::function< int64_t(const Model &)> UpperBound(IntegerVariable v)</div><div class="ttdef"><b>Definition:</b> <a href="integer_8h_source.html#l01530">integer.h:1530</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_ab3ba1ab2a4a6cdc0ea4324d409ddbe7e"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#ab3ba1ab2a4a6cdc0ea4324d409ddbe7e">operations_research::sat::GreaterOrEqual</a></div><div class="ttdeci">std::function< void(Model *)> GreaterOrEqual(IntegerVariable v, int64_t lb)</div><div class="ttdef"><b>Definition:</b> <a href="integer_8h_source.html#l01552">integer.h:1552</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_ac0a34ced2e6cd6cdffe05f2d3fd7a9e8"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#ac0a34ced2e6cd6cdffe05f2d3fd7a9e8">operations_research::sat::TransitionConstraint</a></div><div class="ttdeci">std::function< void(Model *)> TransitionConstraint(const std::vector< IntegerVariable > &vars, const std::vector< std::vector< int64_t > > &automaton, int64_t initial_state, const std::vector< int64_t > &final_states)</div><div class="ttdef"><b>Definition:</b> <a href="sat_2table_8cc_source.html#l00594">sat/table.cc:594</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_accfda9e32067da0a88da8e325cf39c7c"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#accfda9e32067da0a88da8e325cf39c7c">operations_research::sat::ExactlyOneConstraint</a></div><div class="ttdeci">std::function< void(Model *)> ExactlyOneConstraint(const std::vector< Literal > &literals)</div><div class="ttdef"><b>Definition:</b> <a href="sat__solver_8h_source.html#l00878">sat_solver.h:878</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_ae282013f2321b5817fd61ad9e705e446"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#ae282013f2321b5817fd61ad9e705e446">operations_research::sat::FullyEncodeVariable</a></div><div class="ttdeci">std::function< std::vector< IntegerEncoder::ValueLiteralPair >(Model *)> FullyEncodeVariable(IntegerVariable var)</div><div class="ttdef"><b>Definition:</b> <a href="integer_8h_source.html#l01645">integer.h:1645</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">Collection of objects used to extend the Constraint Solver library.</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_aa64bf49d041052c7cb3f40f7496d7534"><div class="ttname"><a href="namespaceoperations__research.html#aa64bf49d041052c7cb3f40f7496d7534">operations_research::CapProd</a></div><div class="ttdeci">int64_t CapProd(int64_t x, int64_t y)</div><div class="ttdef"><b>Definition:</b> <a href="saturated__arithmetic_8h_source.html#l00233">saturated_arithmetic.h:233</a></div></div>
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<div class="ttc" id="apack_8cc_html_a750b5d744c39a06bfb13e6eb010e35d0"><div class="ttname"><a href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a></div><div class="ttdeci">int index</div><div class="ttdef"><b>Definition:</b> <a href="pack_8cc_source.html#l00509">pack.cc:509</a></div></div>
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<div class="ttc" id="aresource_8cc_html_aee52de7b225665566aa47246b9d6b8fa"><div class="ttname"><a href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a></div><div class="ttdeci">int64_t time</div><div class="ttdef"><b>Definition:</b> <a href="resource_8cc_source.html#l01691">resource.cc:1691</a></div></div>
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<div class="ttc" id="asat_2util_8h_html"><div class="ttname"><a href="sat_2util_8h.html">util.h</a></div></div>
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<div class="ttc" id="asat__solver_8h_html"><div class="ttname"><a href="sat__solver_8h.html">sat_solver.h</a></div></div>
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<div class="ttc" id="astl__util_8h_html"><div class="ttname"><a href="stl__util_8h.html">stl_util.h</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_integer_literal_html_a3e2eb445631727dd4abf1d5343f16b2f"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_integer_literal.html#a3e2eb445631727dd4abf1d5343f16b2f">operations_research::sat::IntegerLiteral::LowerOrEqual</a></div><div class="ttdeci">static IntegerLiteral LowerOrEqual(IntegerVariable i, IntegerValue bound)</div><div class="ttdef"><b>Definition:</b> <a href="integer_8h_source.html#l01315">integer.h:1315</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_integer_literal_html_a6c233aafac25ea66d69de93a83c9be63"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_integer_literal.html#a6c233aafac25ea66d69de93a83c9be63">operations_research::sat::IntegerLiteral::GreaterOrEqual</a></div><div class="ttdeci">static IntegerLiteral GreaterOrEqual(IntegerVariable i, IntegerValue bound)</div><div class="ttdef"><b>Definition:</b> <a href="integer_8h_source.html#l01309">integer.h:1309</a></div></div>
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<div class="ttc" id="atable_8h_html"><div class="ttname"><a href="table_8h.html">table.h</a></div></div>
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<div class="ttc" id="atrace_8cc_html_a36bd74109f547f7f8198faf5a12d2879"><div class="ttname"><a href="trace_8cc.html#a36bd74109f547f7f8198faf5a12d2879">message</a></div><div class="ttdeci">std::string message</div><div class="ttdef"><b>Definition:</b> <a href="trace_8cc_source.html#l00398">trace.cc:398</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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