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316 lines
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 <span id="projectnumber">8.2</span>
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<a href="restart_8cc.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// Copyright 2010-2018 Google LLC</span></div>
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<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">// Licensed under the Apache License, Version 2.0 (the "License");</span></div>
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<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// you may not use this file except in compliance with the License.</span></div>
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<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">// You may obtain a copy of the License at</span></div>
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<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">//</span></div>
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<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">// http://www.apache.org/licenses/LICENSE-2.0</span></div>
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<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">//</span></div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">// Unless required by applicable law or agreed to in writing, software</span></div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">// distributed under the License is distributed on an "AS IS" BASIS,</span></div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment">// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">// See the License for the specific language governing permissions and</span></div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">// limitations under the License.</span></div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>  </div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include "<a class="code" href="restart_8h.html">ortools/sat/restart.h</a>"</span></div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>  </div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#include "absl/strings/str_format.h"</span></div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#include "absl/strings/str_split.h"</span></div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor">#include "<a class="code" href="port_2proto__utils_8h.html">ortools/port/proto_utils.h</a>"</span></div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>  </div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="keyword">namespace </span><a class="code" href="namespaceoperations__research.html">operations_research</a> {</div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="keyword">namespace </span>sat {</div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  </div>
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<div class="line"><a name="l00023"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_restart_policy.html#a372de693ad40b3f42839c8ec6ac845f4"> 23</a></span> <span class="keywordtype">void</span> <a class="code" href="classoperations__research_1_1sat_1_1_restart_policy.html#a372de693ad40b3f42839c8ec6ac845f4">RestartPolicy::Reset</a>() {</div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  num_restarts_ = 0;</div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  strategy_counter_ = 0;</div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  strategy_change_conflicts_ =</div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  parameters_.num_conflicts_before_strategy_changes();</div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  conflicts_until_next_strategy_change_ = strategy_change_conflicts_;</div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  </div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  luby_count_ = 0;</div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  conflicts_until_next_restart_ = parameters_.restart_period();</div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  </div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  dl_running_average_.<a class="code" href="classoperations__research_1_1_running_average.html#a7adffacaf51777a81f9d3ff4e95cfd7b">Reset</a>(parameters_.restart_running_window_size());</div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  lbd_running_average_.<a class="code" href="classoperations__research_1_1_running_average.html#a7adffacaf51777a81f9d3ff4e95cfd7b">Reset</a>(parameters_.restart_running_window_size());</div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  trail_size_running_average_.<a class="code" href="classoperations__research_1_1_running_average.html#a7adffacaf51777a81f9d3ff4e95cfd7b">Reset</a>(parameters_.blocking_restart_window_size());</div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  </div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <span class="comment">// Compute the list of restart algorithms to cycle through.</span></div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <span class="comment">//</span></div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <span class="comment">// TODO(user): for some reason, strategies_.assign() does not work as the</span></div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="comment">// returned type of the proto enum iterator is int ?!</span></div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  strategies_.clear();</div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < parameters_.restart_algorithms_size(); ++i) {</div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  strategies_.push_back(parameters_.restart_algorithms(i));</div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  }</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="keywordflow">if</span> (strategies_.empty()) {</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keyword">const</span> std::vector<std::string> string_values = absl::StrSplit(</div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  parameters_.default_restart_algorithms(), <span class="charliteral">','</span>, absl::SkipEmpty());</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> std::string& string_value : string_values) {</div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  SatParameters::RestartAlgorithm tmp;</div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="preprocessor">#if defined(__PORTABLE_PLATFORM__)</span></div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keywordflow">if</span> (string_value == <span class="stringliteral">"NO_RESTART"</span>) {</div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  tmp = SatParameters::NO_RESTART;</div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (string_value == <span class="stringliteral">"LUBY_RESTART"</span>) {</div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  tmp = SatParameters::LUBY_RESTART;</div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (string_value == <span class="stringliteral">"DL_MOVING_AVERAGE_RESTART"</span>) {</div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  tmp = SatParameters::DL_MOVING_AVERAGE_RESTART;</div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (string_value == <span class="stringliteral">"LBD_MOVING_AVERAGE_RESTART"</span>) {</div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  tmp = SatParameters::LBD_MOVING_AVERAGE_RESTART;</div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (string_value == <span class="stringliteral">"FIXED_RESTART"</span>) {</div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  tmp = SatParameters::FIXED_RESTART;</div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  } <span class="keywordflow">else</span> {</div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <a class="code" href="base_2logging_8h.html#accad43a85d781d53381cd53a9894b6ae">LOG</a>(<a class="code" href="log__severity_8h.html#a50e5762f38854b37ee3e2851bc1bb0e7">WARNING</a>) << <span class="stringliteral">"Couldn't parse the RestartAlgorithm name: '"</span></div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  << string_value << <span class="stringliteral">"'."</span>;</div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keywordflow">continue</span>;</div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  }</div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="preprocessor">#else </span><span class="comment">// __PORTABLE_PLATFORM__</span></div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keywordflow">if</span> (!SatParameters::RestartAlgorithm_Parse(string_value, &tmp)) {</div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <a class="code" href="base_2logging_8h.html#accad43a85d781d53381cd53a9894b6ae">LOG</a>(<a class="code" href="log__severity_8h.html#a50e5762f38854b37ee3e2851bc1bb0e7">WARNING</a>) << <span class="stringliteral">"Couldn't parse the RestartAlgorithm name: '"</span></div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  << string_value << <span class="stringliteral">"'."</span>;</div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keywordflow">continue</span>;</div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  }</div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="preprocessor">#endif </span><span class="comment">// !__PORTABLE_PLATFORM__</span></div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  strategies_.push_back(tmp);</div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  }</div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  }</div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keywordflow">if</span> (strategies_.empty()) {</div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  strategies_.push_back(SatParameters::NO_RESTART);</div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  }</div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> }</div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  </div>
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<div class="line"><a name="l00081"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_restart_policy.html#a9a4dbc2c6849f437d4f08288eeffbfed"> 81</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_restart_policy.html#a9a4dbc2c6849f437d4f08288eeffbfed">RestartPolicy::ShouldRestart</a>() {</div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keywordtype">bool</span> should_restart = <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="keywordflow">switch</span> (strategies_[strategy_counter_ % strategies_.size()]) {</div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keywordflow">case</span> SatParameters::NO_RESTART:</div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keywordflow">case</span> SatParameters::LUBY_RESTART:</div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="keywordflow">if</span> (conflicts_until_next_restart_ == 0) {</div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  luby_count_++;</div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  should_restart = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  }</div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keywordflow">case</span> SatParameters::DL_MOVING_AVERAGE_RESTART:</div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordflow">if</span> (dl_running_average_.<a class="code" href="classoperations__research_1_1_running_average.html#a9cc27103c6a070bad6dcaea6df83e7ff">IsWindowFull</a>() &&</div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  dl_running_average_.<a class="code" href="classoperations__research_1_1_running_average.html#abe7238c645e1aeac09a33b1291357486">GlobalAverage</a>() <</div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  parameters_.restart_dl_average_ratio() *</div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  dl_running_average_.<a class="code" href="classoperations__research_1_1_running_average.html#a240c66108d94a6cf475664188437b3b0">WindowAverage</a>()) {</div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  should_restart = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  }</div>
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<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="keywordflow">case</span> SatParameters::LBD_MOVING_AVERAGE_RESTART:</div>
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<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keywordflow">if</span> (lbd_running_average_.<a class="code" href="classoperations__research_1_1_running_average.html#a9cc27103c6a070bad6dcaea6df83e7ff">IsWindowFull</a>() &&</div>
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  lbd_running_average_.<a class="code" href="classoperations__research_1_1_running_average.html#abe7238c645e1aeac09a33b1291357486">GlobalAverage</a>() <</div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  parameters_.restart_lbd_average_ratio() *</div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  lbd_running_average_.<a class="code" href="classoperations__research_1_1_running_average.html#a240c66108d94a6cf475664188437b3b0">WindowAverage</a>()) {</div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  should_restart = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  }</div>
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<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="keywordflow">case</span> SatParameters::FIXED_RESTART:</div>
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="keywordflow">if</span> (conflicts_until_next_restart_ == 0) {</div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  should_restart = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  }</div>
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<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  }</div>
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<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keywordflow">if</span> (should_restart) {</div>
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<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  num_restarts_++;</div>
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<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  </div>
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<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <span class="comment">// Strategy switch?</span></div>
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<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keywordflow">if</span> (conflicts_until_next_strategy_change_ == 0) {</div>
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<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  strategy_counter_++;</div>
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<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  strategy_change_conflicts_ +=</div>
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<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <span class="keyword">static_cast<</span><span class="keywordtype">int</span><span class="keyword">></span>(parameters_.strategy_change_increase_ratio() *</div>
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<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  strategy_change_conflicts_);</div>
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<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  conflicts_until_next_strategy_change_ = strategy_change_conflicts_;</div>
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<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  </div>
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<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <span class="comment">// The LUBY_RESTART strategy is considered the "stable" mode and we change</span></div>
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<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="comment">// the polariy heuristic while under it.</span></div>
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<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  decision_policy_-><a class="code" href="classoperations__research_1_1sat_1_1_sat_decision_policy.html#a9004867224c2af27a8b06fc439c8a7a4">SetStablePhase</a>(</div>
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<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  strategies_[strategy_counter_ % strategies_.size()] ==</div>
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<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  SatParameters::LUBY_RESTART);</div>
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<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  }</div>
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<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  </div>
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<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="comment">// Reset the various restart strategies.</span></div>
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<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  dl_running_average_.<a class="code" href="classoperations__research_1_1_running_average.html#a8b0ef188b9f416aa368e07c94a9dd1af">ClearWindow</a>();</div>
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<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  lbd_running_average_.<a class="code" href="classoperations__research_1_1_running_average.html#a8b0ef188b9f416aa368e07c94a9dd1af">ClearWindow</a>();</div>
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<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  conflicts_until_next_restart_ = parameters_.restart_period();</div>
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<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="keywordflow">if</span> (strategies_[strategy_counter_ % strategies_.size()] ==</div>
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<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  SatParameters::LUBY_RESTART) {</div>
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<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  conflicts_until_next_restart_ *= <a class="code" href="namespaceoperations__research_1_1sat.html#ab89c95fd9e5fe8176a7807d92872972e">SUniv</a>(luby_count_ + 1);</div>
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<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  }</div>
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<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  }</div>
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<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <span class="keywordflow">return</span> should_restart;</div>
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<div class="line"><a name="l00142"></a><span class="lineno"> 142</span> }</div>
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<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  </div>
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<div class="line"><a name="l00144"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_restart_policy.html#a6656a848070cf8e91a9af92feee0477c"> 144</a></span> <span class="keywordtype">void</span> <a class="code" href="classoperations__research_1_1sat_1_1_restart_policy.html#a6656a848070cf8e91a9af92feee0477c">RestartPolicy::OnConflict</a>(<span class="keywordtype">int</span> conflict_trail_index,</div>
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<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="keywordtype">int</span> conflict_decision_level, <span class="keywordtype">int</span> conflict_lbd) {</div>
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<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <span class="comment">// Decrement the restart counter if needed.</span></div>
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<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <span class="keywordflow">if</span> (conflicts_until_next_restart_ > 0) {</div>
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<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  --conflicts_until_next_restart_;</div>
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<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  }</div>
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<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  <span class="keywordflow">if</span> (conflicts_until_next_strategy_change_ > 0) {</div>
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<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  --conflicts_until_next_strategy_change_;</div>
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<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  }</div>
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<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  </div>
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<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  trail_size_running_average_.<a class="code" href="classoperations__research_1_1_running_average.html#a925b6233d6cc9970b8f5bba800e9a3eb">Add</a>(conflict_trail_index);</div>
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<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  dl_running_average_.<a class="code" href="classoperations__research_1_1_running_average.html#a925b6233d6cc9970b8f5bba800e9a3eb">Add</a>(conflict_decision_level);</div>
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<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  lbd_running_average_.<a class="code" href="classoperations__research_1_1_running_average.html#a925b6233d6cc9970b8f5bba800e9a3eb">Add</a>(conflict_lbd);</div>
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<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  </div>
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<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="comment">// Block the restart.</span></div>
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<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="comment">// Note(user): glucose only activate this after 10000 conflicts.</span></div>
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<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <span class="keywordflow">if</span> (parameters_.use_blocking_restart()) {</div>
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<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="keywordflow">if</span> (lbd_running_average_.<a class="code" href="classoperations__research_1_1_running_average.html#a9cc27103c6a070bad6dcaea6df83e7ff">IsWindowFull</a>() &&</div>
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<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  dl_running_average_.<a class="code" href="classoperations__research_1_1_running_average.html#a9cc27103c6a070bad6dcaea6df83e7ff">IsWindowFull</a>() &&</div>
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<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  trail_size_running_average_.<a class="code" href="classoperations__research_1_1_running_average.html#a9cc27103c6a070bad6dcaea6df83e7ff">IsWindowFull</a>() &&</div>
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<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  conflict_trail_index ></div>
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<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  parameters_.blocking_restart_multiplier() *</div>
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<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  trail_size_running_average_.<a class="code" href="classoperations__research_1_1_running_average.html#a240c66108d94a6cf475664188437b3b0">WindowAverage</a>()) {</div>
|
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<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  dl_running_average_.<a class="code" href="classoperations__research_1_1_running_average.html#a8b0ef188b9f416aa368e07c94a9dd1af">ClearWindow</a>();</div>
|
|
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  lbd_running_average_.<a class="code" href="classoperations__research_1_1_running_average.html#a8b0ef188b9f416aa368e07c94a9dd1af">ClearWindow</a>();</div>
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<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  }</div>
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<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  }</div>
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<div class="line"><a name="l00171"></a><span class="lineno"> 171</span> }</div>
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<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  </div>
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<div class="line"><a name="l00173"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_restart_policy.html#a3b30aa3a72ace837ddc29fd371c6e46e"> 173</a></span> std::string <a class="code" href="classoperations__research_1_1sat_1_1_restart_policy.html#a3b30aa3a72ace837ddc29fd371c6e46e">RestartPolicy::InfoString</a>()<span class="keyword"> const </span>{</div>
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<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  std::string result =</div>
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<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  absl::StrFormat(<span class="stringliteral">" num restarts: %d\n"</span>, num_restarts_) +</div>
|
|
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  absl::StrFormat(</div>
|
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<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <span class="stringliteral">" current_strategy: %s\n"</span>,</div>
|
|
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  ProtoEnumToString<SatParameters::RestartAlgorithm>(</div>
|
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<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  strategies_[strategy_counter_ % strategies_.size()])) +</div>
|
|
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  absl::StrFormat(<span class="stringliteral">" conflict decision level avg: %f window: %f\n"</span>,</div>
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<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  dl_running_average_.<a class="code" href="classoperations__research_1_1_running_average.html#abe7238c645e1aeac09a33b1291357486">GlobalAverage</a>(),</div>
|
|
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  dl_running_average_.<a class="code" href="classoperations__research_1_1_running_average.html#a240c66108d94a6cf475664188437b3b0">WindowAverage</a>()) +</div>
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<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  absl::StrFormat(<span class="stringliteral">" conflict lbd avg: %f window: %f\n"</span>,</div>
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<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  lbd_running_average_.<a class="code" href="classoperations__research_1_1_running_average.html#abe7238c645e1aeac09a33b1291357486">GlobalAverage</a>(),</div>
|
|
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  lbd_running_average_.<a class="code" href="classoperations__research_1_1_running_average.html#a240c66108d94a6cf475664188437b3b0">WindowAverage</a>()) +</div>
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|
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  absl::StrFormat(<span class="stringliteral">" conflict trail size avg: %f window: %f\n"</span>,</div>
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<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  trail_size_running_average_.<a class="code" href="classoperations__research_1_1_running_average.html#abe7238c645e1aeac09a33b1291357486">GlobalAverage</a>(),</div>
|
|
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  trail_size_running_average_.<a class="code" href="classoperations__research_1_1_running_average.html#a240c66108d94a6cf475664188437b3b0">WindowAverage</a>());</div>
|
|
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  <span class="keywordflow">return</span> result;</div>
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<div class="line"><a name="l00190"></a><span class="lineno"> 190</span> }</div>
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<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  </div>
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<div class="line"><a name="l00192"></a><span class="lineno"> 192</span> } <span class="comment">// namespace sat</span></div>
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<div class="line"><a name="l00193"></a><span class="lineno"> 193</span> } <span class="comment">// namespace operations_research</span></div>
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<div class="ttc" id="abase_2logging_8h_html_accad43a85d781d53381cd53a9894b6ae"><div class="ttname"><a href="base_2logging_8h.html#accad43a85d781d53381cd53a9894b6ae">LOG</a></div><div class="ttdeci">#define LOG(severity)</div><div class="ttdef"><b>Definition:</b> <a href="base_2logging_8h_source.html#l00420">base/logging.h:420</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_running_average_html_a240c66108d94a6cf475664188437b3b0"><div class="ttname"><a href="classoperations__research_1_1_running_average.html#a240c66108d94a6cf475664188437b3b0">operations_research::RunningAverage::WindowAverage</a></div><div class="ttdeci">double WindowAverage() const</div><div class="ttdef"><b>Definition:</b> <a href="running__stat_8h_source.html#l00126">running_stat.h:126</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_running_average_html_a7adffacaf51777a81f9d3ff4e95cfd7b"><div class="ttname"><a href="classoperations__research_1_1_running_average.html#a7adffacaf51777a81f9d3ff4e95cfd7b">operations_research::RunningAverage::Reset</a></div><div class="ttdeci">void Reset(int window_size)</div><div class="ttdef"><b>Definition:</b> <a href="running__stat_8h_source.html#l00104">running_stat.h:104</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_running_average_html_a8b0ef188b9f416aa368e07c94a9dd1af"><div class="ttname"><a href="classoperations__research_1_1_running_average.html#a8b0ef188b9f416aa368e07c94a9dd1af">operations_research::RunningAverage::ClearWindow</a></div><div class="ttdeci">void ClearWindow()</div><div class="ttdef"><b>Definition:</b> <a href="running__stat_8h_source.html#l00131">running_stat.h:131</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_running_average_html_a925b6233d6cc9970b8f5bba800e9a3eb"><div class="ttname"><a href="classoperations__research_1_1_running_average.html#a925b6233d6cc9970b8f5bba800e9a3eb">operations_research::RunningAverage::Add</a></div><div class="ttdeci">void Add(int value)</div><div class="ttdef"><b>Definition:</b> <a href="running__stat_8h_source.html#l00111">running_stat.h:111</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_running_average_html_a9cc27103c6a070bad6dcaea6df83e7ff"><div class="ttname"><a href="classoperations__research_1_1_running_average.html#a9cc27103c6a070bad6dcaea6df83e7ff">operations_research::RunningAverage::IsWindowFull</a></div><div class="ttdeci">bool IsWindowFull() const</div><div class="ttdef"><b>Definition:</b> <a href="running__stat_8h_source.html#l00136">running_stat.h:136</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_running_average_html_abe7238c645e1aeac09a33b1291357486"><div class="ttname"><a href="classoperations__research_1_1_running_average.html#abe7238c645e1aeac09a33b1291357486">operations_research::RunningAverage::GlobalAverage</a></div><div class="ttdeci">double GlobalAverage() const</div><div class="ttdef"><b>Definition:</b> <a href="running__stat_8h_source.html#l00122">running_stat.h:122</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_restart_policy_html_a372de693ad40b3f42839c8ec6ac845f4"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_restart_policy.html#a372de693ad40b3f42839c8ec6ac845f4">operations_research::sat::RestartPolicy::Reset</a></div><div class="ttdeci">void Reset()</div><div class="ttdef"><b>Definition:</b> <a href="restart_8cc_source.html#l00023">restart.cc:23</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_restart_policy_html_a3b30aa3a72ace837ddc29fd371c6e46e"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_restart_policy.html#a3b30aa3a72ace837ddc29fd371c6e46e">operations_research::sat::RestartPolicy::InfoString</a></div><div class="ttdeci">std::string InfoString() const</div><div class="ttdef"><b>Definition:</b> <a href="restart_8cc_source.html#l00173">restart.cc:173</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_restart_policy_html_a6656a848070cf8e91a9af92feee0477c"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_restart_policy.html#a6656a848070cf8e91a9af92feee0477c">operations_research::sat::RestartPolicy::OnConflict</a></div><div class="ttdeci">void OnConflict(int conflict_trail_index, int conflict_decision_level, int conflict_lbd)</div><div class="ttdef"><b>Definition:</b> <a href="restart_8cc_source.html#l00144">restart.cc:144</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_restart_policy_html_a9a4dbc2c6849f437d4f08288eeffbfed"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_restart_policy.html#a9a4dbc2c6849f437d4f08288eeffbfed">operations_research::sat::RestartPolicy::ShouldRestart</a></div><div class="ttdeci">bool ShouldRestart()</div><div class="ttdef"><b>Definition:</b> <a href="restart_8cc_source.html#l00081">restart.cc:81</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_sat_decision_policy_html_a9004867224c2af27a8b06fc439c8a7a4"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_sat_decision_policy.html#a9004867224c2af27a8b06fc439c8a7a4">operations_research::sat::SatDecisionPolicy::SetStablePhase</a></div><div class="ttdeci">void SetStablePhase(bool is_stable)</div><div class="ttdef"><b>Definition:</b> <a href="sat__decision_8h_source.html#l00080">sat_decision.h:80</a></div></div>
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<div class="ttc" id="alog__severity_8h_html_a50e5762f38854b37ee3e2851bc1bb0e7"><div class="ttname"><a href="log__severity_8h.html#a50e5762f38854b37ee3e2851bc1bb0e7">WARNING</a></div><div class="ttdeci">const int WARNING</div><div class="ttdef"><b>Definition:</b> <a href="log__severity_8h_source.html#l00031">log_severity.h:31</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_ab89c95fd9e5fe8176a7807d92872972e"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#ab89c95fd9e5fe8176a7807d92872972e">operations_research::sat::SUniv</a></div><div class="ttdeci">int SUniv(int i)</div><div class="ttdef"><b>Definition:</b> <a href="restart_8h_source.html#l00085">restart.h:85</a></div></div>
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