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fix #4508

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-06-07 16:28:53 -07:00
parent d2a12f6db5
commit 5f9973d8c4
1 changed files with 5 additions and 1 deletions
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6
src/sat/ba_solver.cpp
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@ -330,7 +330,7 @@ namespace sat {
m_stats.m_num_conflicts++;
TRACE("ba", display(tout, c, true); );
if (!validate_conflict(c)) {
display(std::cout, c, true);
IF_VERBOSE(0, display(verbose_stream(), c, true));
UNREACHABLE();
}
SASSERT(validate_conflict(c));
@ -2941,6 +2941,8 @@ namespace sat {
void ba_solver::pre_simplify() {
VERIFY(s().at_base_lvl());
if (s().inconsistent())
return;
m_constraint_removed = false;
xor_finder xf(s());
for (unsigned sz = m_constraints.size(), i = 0; i < sz; ++i) pre_simplify(xf, *m_constraints[i]);
@ -2983,6 +2985,8 @@ namespace sat {
void ba_solver::simplify() {
if (!s().at_base_lvl()) s().pop_to_base_level();
if (s().inconsistent())
return;
unsigned trail_sz, count = 0;
do {
trail_sz = s().init_trail_size();