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extract lemmas

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2017-06-04 14:12:55 -07:00
parent 71b6f97fb1
commit c33dce1161
9 changed files with 104 additions and 7 deletions
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6
src/sat/sat_solver.cpp
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@ -3004,7 +3004,8 @@ namespace sat {
// Iterators
//
// -----------------------
void solver::collect_bin_clauses(svector<bin_clause> & r, bool learned) const {
void solver::collect_bin_clauses(svector<bin_clause> & r, bool learned, bool learned_only) const {
SASSERT(learned || !learned_only);
unsigned sz = m_watches.size();
for (unsigned l_idx = 0; l_idx < sz; l_idx++) {
literal l = to_literal(l_idx);
@ -3017,6 +3018,8 @@ namespace sat {
continue;
if (!learned && it->is_learned())
continue;
else if (learned && learned_only && !it->is_learned())
continue;
literal l2 = it->get_literal();
if (l.index() > l2.index())
continue;
@ -3327,7 +3330,6 @@ namespace sat {
m_user_bin_clauses.reset();
m_binary_clause_graph.reset();
collect_bin_clauses(m_user_bin_clauses, true);
collect_bin_clauses(m_user_bin_clauses, false);
hashtable<literal_pair, pair_hash<literal_hash, literal_hash>, default_eq<literal_pair> > seen_bc;
for (unsigned i = 0; i < m_user_bin_clauses.size(); ++i) {
literal l1 = m_user_bin_clauses[i].first;