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fix qe for undef scenarios, codeplex issue 130

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2014-10-05 18:36:15 -07:00
parent c6683fd6fa
commit 18e77bd539
1 changed files with 17 additions and 8 deletions
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25
src/qe/qe.cpp
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@ -1449,11 +1449,19 @@ namespace qe {
m_solver.assert_expr(m_fml);
if (assumption) m_solver.assert_expr(assumption);
bool is_sat = false;
while (l_true == m_solver.check()) {
is_sat = true;
bool is_sat = false;
lbool res = l_true;
while (res == l_true) {
res = m_solver.check();
if (res == l_true) is_sat = true;
final_check();
}
if (res == l_undef) {
free_vars.append(num_vars, vars);
reset();
m_solver.pop(1);
return;
}
if (!is_sat) {
fml = m.mk_false();
@ -1484,12 +1492,13 @@ namespace qe {
);
free_vars.append(m_free_vars);
SASSERT(!m_free_vars.empty() || m_solver.inconsistent());
if (!m_free_vars.empty() || m_solver.inconsistent()) {
if (m_fml.get() != m_subfml.get()) {
scoped_ptr<expr_replacer> rp = mk_default_expr_replacer(m);
rp->apply_substitution(to_app(m_subfml.get()), fml, m_fml);
fml = m_fml;
if (m_fml.get() != m_subfml.get()) {
scoped_ptr<expr_replacer> rp = mk_default_expr_replacer(m);
rp->apply_substitution(to_app(m_subfml.get()), fml, m_fml);
fml = m_fml;
}
}
reset();
m_solver.pop(1);