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experiments with ccc

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2017-09-19 08:19:08 -07:00
parent b70da2a555
commit 431d318958
5 changed files with 151 additions and 88 deletions
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11
src/sat/sat_lookahead.cpp
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@ -863,7 +863,7 @@ namespace sat {
copy_clauses(m_s.m_clauses);
copy_clauses(m_s.m_learned);
m_config.m_use_ternary_reward &= !m_s.m_ext;
// m_config.m_use_ternary_reward &= !m_s.m_ext;
// copy units
unsigned trail_sz = m_s.init_trail_size();
@ -898,7 +898,7 @@ namespace sat {
if (c.was_removed()) continue;
// enable when there is a non-ternary reward system.
if (c.size() > 3) {
m_config.m_use_ternary_reward = false;
// m_config.m_use_ternary_reward = false;
}
bool was_eliminated = false;
for (unsigned i = 0; !was_eliminated && i < c.size(); ++i) {
@ -1256,7 +1256,12 @@ namespace sat {
double lookahead::literal_occs(literal l) {
double result = m_binary[l.index()].size();
for (clause const* c : m_full_watches[l.index()]) {
if (!is_true((*c)[0]) && !is_true((*c)[1])) {
bool has_true = false;
for (literal l : *c) {
has_true = is_true(l);
if (has_true) break;
}
if (!has_true) {
result += 1.0 / c->size();
}
}