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fix drat generation in asymmetric branch simplification

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2019-01-12 13:19:09 -08:00
parent f835a3c2b2
commit dc5e4ca1c5
3 changed files with 32 additions and 11 deletions
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20
src/sat/sat_asymm_branch.cpp
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@ -342,7 +342,10 @@ namespace sat {
break;
default:
if (!m_to_delete.contains(lit)) {
c[j++] = lit;
if (i != j) {
std::swap(c[i], c[j]);
}
j++;
}
break;
}
@ -406,12 +409,13 @@ namespace sat {
bool asymm_branch::re_attach(scoped_detach& scoped_d, clause& c, unsigned new_sz) {
VERIFY(s.m_trail.size() == s.m_qhead);
m_elim_literals += c.size() - new_sz;
unsigned old_sz = c.size();
m_elim_literals += old_sz - new_sz;
if (c.is_learned()) {
m_elim_learned_literals += c.size() - new_sz;
m_elim_learned_literals += old_sz - new_sz;
}
switch(new_sz) {
switch (new_sz) {
case 0:
s.set_conflict(justification());
return false;
@ -430,8 +434,12 @@ namespace sat {
return false;
default:
c.shrink(new_sz);
if (s.m_config.m_drat) s.m_drat.add(c, true);
// if (s.m_config.m_drat) s.m_drat.del(c0); // TBD
if (s.m_config.m_drat && new_sz < old_sz) {
s.m_drat.add(c, true);
c.restore(old_sz);
s.m_drat.del(c);
c.shrink(new_sz);
}
return true;
}
}

15
src/sat/sat_drat.cpp
View file

@ -585,8 +585,21 @@ namespace sat {
void drat::del(clause& c) {
#if 0
// check_duplicates:
for (literal lit : c) {
VERIFY(!m_seen[lit.index()]);
m_seen[lit.index()] = true;
}
for (literal lit : c) {
m_seen[lit.index()] = false;
}
#endif
TRACE("sat", tout << "del: " << c << "\n";);
if (m_out) dump(c.size(), c.begin(), status::deleted);
if (m_out) {
dump(c.size(), c.begin(), status::deleted);
}
if (m_check) {
clause* c1 = s.alloc_clause(c.size(), c.begin(), c.is_learned());
append(*c1, status::deleted);