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working on BDD reordering

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2017-10-17 14:20:49 -07:00
parent 4944a86478
commit e0e7836c12
3 changed files with 82 additions and 36 deletions
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30
src/sat/sat_lookahead.cpp
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@ -1445,35 +1445,7 @@ namespace sat {
m_lookahead_reward += 3.3 * pow(0.5, nonfixed - 2);
break;
case ternary_reward:
if (nonfixed == 2) {
literal l1 = null_literal;
literal l2 = null_literal;
for (literal lit : *n) {
if (!is_fixed(lit)) {
if (l1 == null_literal) {
l1 = lit;
}
else {
SASSERT(l2 != null_literal);
l2 = lit;
break;
}
}
}
if (l1 == null_literal) {
set_conflict();
continue;
}
else if (l2 == null_literal) {
propagated(l1);
}
else {
m_lookahead_reward += (*m_heur)[l1.index()] * (*m_heur)[l2.index()];
}
}
else {
m_lookahead_reward += (double)0.001;
}
UNREACHABLE();
break;
case unit_literal_reward:
break;