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fix #3190 fix #3168

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-03-08 12:51:10 +01:00
parent 99b291e78d
commit 7452e55698
10 changed files with 34 additions and 29 deletions
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28
src/smt/smt_internalizer.cpp
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@ -1323,21 +1323,27 @@ namespace smt {
case CLS_AUX:
case CLS_TH_AXIOM: {
literal_buffer simp_lits;
if (!simplify_aux_clause_literals(num_lits, lits, simp_lits))
return nullptr; // clause is equivalent to true;
DEBUG_CODE({
for (unsigned i = 0; i < simp_lits.size(); i++) {
SASSERT(get_assignment(simp_lits[i]) == l_true);
if (!simplify_aux_clause_literals(num_lits, lits, simp_lits)) {
if (j && !j->in_region()) {
j->del_eh(m);
dealloc(j);
}
});
return nullptr; // clause is equivalent to true;
}
DEBUG_CODE(for (literal lit : simp_lits) SASSERT(get_assignment(lit) == l_true););
if (!simp_lits.empty()) {
j = mk_justification(unit_resolution_justification(m_region, j, simp_lits.size(), simp_lits.c_ptr()));
}
break;
}
case CLS_TH_LEMMA: {
if (!simplify_aux_lemma_literals(num_lits, lits))
if (!simplify_aux_lemma_literals(num_lits, lits)) {
if (j && !j->in_region()) {
j->del_eh(m);
dealloc(j);
}
return nullptr; // clause is equivalent to true
}
// simplify_aux_lemma_literals does not delete literals assigned to false, so
// it is not necessary to create a unit_resolution_justification
break;
@ -1346,14 +1352,6 @@ namespace smt {
break;
}
TRACE("mk_clause", tout << "after simplification:\n"; display_literals_verbose(tout, num_lits, lits) << "\n";);
#if 0
for (unsigned i = 0; i < num_lits; ++i) {
expr_ref tmp(m);
literal2expr(lits[i], tmp);
std::cout << tmp << "\n";
}
std::cout << "\n";
#endif
unsigned activity = 0;
if (activity == 0)