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add lrb/chb and experiment with them

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2017-05-28 10:48:31 -07:00
commit e0a86ccc1a
28 changed files with 459 additions and 281 deletions
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21
src/sat/sat_config.cpp
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@ -126,6 +126,27 @@ namespace sat {
m_drat_file = p.drat_file();
m_drat = (m_drat_check || m_drat_file != symbol("")) && p.threads() == 1;
m_dyn_sub_res = p.dyn_sub_res();
// Parameters used in Liang, Ganesh, Poupart, Czarnecki AAAI 2016.
m_branching_heuristic = BH_VSIDS;
if (p.branching_heuristic() == symbol("vsids")) {
m_branching_heuristic = BH_VSIDS;
}
else if (p.branching_heuristic() == symbol("chb")) {
m_branching_heuristic = BH_CHB;
}
else if (p.branching_heuristic() == symbol("lrb")) {
m_branching_heuristic = BH_LRB;
}
else {
throw sat_param_exception("invalid branching heuristic: accepted heuristics are 'vsids', 'lrb' or 'chb'");
}
m_anti_exploration = m_branching_heuristic != BH_VSIDS;
m_step_size_init = 0.40;
m_step_size_dec = 0.000001;
m_step_size_min = 0.06;
m_reward_multiplier = 0.9;
m_reward_offset = 1000000.0;
}
void config::collect_param_descrs(param_descrs & r) {