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fix #4955

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2021-01-20 00:29:09 -08:00
parent 3bc18ab0d1
commit dc4382604b
2 changed files with 8 additions and 1 deletions
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8
src/sat/sat_elim_eqs.cpp
View file

@ -54,8 +54,13 @@ namespace sat {
literal r2 = norm(roots, l2);
if (r1 == r2) {
m_solver.assign_unit(r1);
if (m_solver.inconsistent())
if (m_solver.inconsistent()) {
++it;
for (; it != end; ++it, ++itprev)
*itprev = *it;
wlist.set_end(itprev);
return;
}
// consume unit
continue;
}
@ -97,6 +102,7 @@ namespace sat {
for (; it != end; ++it) {
clause & c = *(*it);
TRACE("sats", tout << "processing: " << c << "\n";);
TRACE("scc_details", m_solver.display_watches(tout););
unsigned sz = c.size();
unsigned i;
for (i = 0; i < sz; i++) {

1
src/sat/sat_scc.cpp
View file

@ -220,6 +220,7 @@ namespace sat {
frames.pop_back();
}
}
TRACE("scc_details", m_solver.display_watches(tout););
for (unsigned i = 0; i < m_solver.num_vars(); ++i) {
if (roots[i] == null_literal) {
roots[i] = literal(i, false);