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fix drat checker

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2017-02-10 18:04:54 -05:00
parent 6b4aec9b74
commit 8b4f3ac6f0
16 changed files with 201 additions and 166 deletions
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31
src/sat/sat_elim_eqs.cpp
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@ -117,7 +117,9 @@ namespace sat {
break; // clause was satisfied
if (val == l_false)
continue; // skip
c[j] = l;
if (i != j) {
std::swap(c[i], c[j]);
}
j++;
}
if (i < sz) {
@ -136,16 +138,7 @@ namespace sat {
return;
}
TRACE("elim_eqs", tout << "after removing duplicates: " << c << " j: " << j << "\n";);
if (j < sz)
c.shrink(j);
else
c.update_approx();
SASSERT(c.size() == j);
DEBUG_CODE({
for (unsigned i = 0; i < c.size(); i++) {
SASSERT(c[i] == norm(roots, c[i]));
}
});
SASSERT(j >= 1);
switch (j) {
case 1:
@ -160,8 +153,22 @@ namespace sat {
SASSERT(*it == &c);
*it2 = *it;
it2++;
if (!c.frozen())
if (j < sz) {
if (m_solver.m_config.m_drat) m_solver.m_drat.del(c);
c.shrink(j);
if (m_solver.m_config.m_drat) m_solver.m_drat.add(c, true);
}
else
c.update_approx();
DEBUG_CODE({
for (unsigned i = 0; i < sz; i++) {
SASSERT(c[i] == norm(roots, c[i]));
} });
if (!c.frozen()) {
m_solver.attach_clause(c);
}
break;
}
}