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merge

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2021-12-09 08:26:34 -08:00
commit d7f16d0622
5 changed files with 21 additions and 8 deletions
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4
src/math/polysat/saturation.cpp
View file

@ -33,7 +33,7 @@ namespace polysat {
for (auto c1 : core) {
if (!c1->is_ule())
continue;
if (!c1.is_currently_false(s))
if (c1.is_currently_true(s))
continue;
auto c = c1.as_inequality();
if (try_ugt_x(v, core, c))
@ -70,7 +70,7 @@ namespace polysat {
SASSERT(!crit1.is_currently_true(s));
LOG("critical " << m_rule << " " << crit1);
LOG("consequent " << c << " value: " << c.bvalue(s) << " " << c.is_currently_false(s) << " " << core.contains(~c));
LOG("consequent " << c << " value: " << c.bvalue(s) << " is-false: " << c.is_currently_false(s) << " " << core.contains(~c));
// ensure new core is a conflict

2
src/math/polysat/search_state.cpp
View file

@ -61,7 +61,7 @@ namespace polysat {
void search_state::pop() {
auto const& item = m_items.back();
if (item.is_assignment() && item.var() == m_assignment.back().first)
if (item.is_assignment() && !m_assignment.empty() && item.var() == m_assignment.back().first)
m_assignment.pop_back();
m_items.pop_back();
}

10
src/math/polysat/solver.cpp
View file

@ -456,10 +456,16 @@ namespace polysat {
++m_stats.m_num_conflicts;
SASSERT(is_conflict());
if (m_conflict.conflict_var() != null_var) {
pvar v = m_conflict.conflict_var();
// This case corresponds to a propagation of conflict_var, except it's not explicitly on the stack.
VERIFY(m_viable.resolve(m_conflict.conflict_var(), m_conflict));
VERIFY(m_viable.resolve(v, m_conflict));
// TBD: saturate resulting conflict to get better lemmas.
LOG("try-saturate");
m_conflict.try_saturate(v);
LOG("end-try-saturate");
>>>>>>> ed9c0b84f668548ee1c11f14185b08333baa6f72
}
search_iterator search_it(m_search);

2
src/math/polysat/viable.cpp
View file

@ -198,7 +198,7 @@ namespace polysat {
lo = val - lambda_l;
}
SASSERT(hi <= s.var2pdd(v).max_value());
LOG("forbidden interval " << e->interval << " [" << lo << ", " << hi << "[");
LOG("forbidden interval " << e->interval << " - " << val << " " << coeff_val << " [" << lo << ", " << hi << "[");
entry* ne = alloc_entry();
ne->src = e->src;
ne->side_cond = e->side_cond;

11
src/test/polysat.cpp
View file

@ -1065,10 +1065,17 @@ namespace polysat {
void tst_polysat() {
polysat::test_l5();
polysat::test_ineq_axiom1();
polysat::test_ineq_axiom2();
polysat::test_ineq_axiom3();
polysat::test_ineq_axiom4();
polysat::test_ineq_axiom5();
polysat::test_ineq_axiom6();
return;
polysat::test_ineq_basic4();
//return;
polysat::test_ineq_basic6();
// polysat::test_monot_bounds(8);