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fix another bug uncovered by Dunlop, prepare grounds for equality solving within NNFs

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2019-01-14 01:25:25 -08:00
parent eaa80d5b02
commit 0b84c60886
13 changed files with 283 additions and 122 deletions
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3
src/opt/opt_context.cpp
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@ -383,7 +383,7 @@ namespace opt {
lbool context::execute_min_max(unsigned index, bool committed, bool scoped, bool is_max) {
if (scoped) get_solver().push();
lbool result = m_optsmt.lex(index, is_max);
if (result == l_true) m_optsmt.get_model(m_model, m_labels);
if (result == l_true) { m_optsmt.get_model(m_model, m_labels); SASSERT(m_model); }
if (scoped) get_solver().pop(1);
if (result == l_true && committed) m_optsmt.commit_assignment(index);
if (result == l_true && m_optsmt.is_unbounded(index, is_max) && contains_quantifiers()) {
@ -1604,6 +1604,7 @@ namespace opt {
void context::validate_lex() {
rational r1;
expr_ref val(m);
SASSERT(m_model);
for (unsigned i = 0; i < m_objectives.size(); ++i) {
objective const& obj = m_objectives[i];
switch(obj.m_type) {