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integrating changes of Nikolaj with m_empty_clause etc.

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2019-12-09 10:48:59 -10:00
parent f939a26c86
commit 21d9875239
1 changed files with 3 additions and 1 deletions
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4
src/smt/smt_internalizer.cpp
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@ -1346,13 +1346,15 @@ namespace smt {
bool lemma = is_lemma(k); bool lemma = is_lemma(k);
m_stats.m_num_mk_lits += num_lits; m_stats.m_num_mk_lits += num_lits;
switch (num_lits) { switch (num_lits) {
case 0: case 0: {
if (j && !j->in_region()) if (j && !j->in_region())
m_justifications.push_back(j); m_justifications.push_back(j);
TRACE("mk_clause", tout << "empty clause... setting conflict\n";); TRACE("mk_clause", tout << "empty clause... setting conflict\n";);
set_conflict(j == nullptr ? b_justification::mk_axiom() : b_justification(j)); set_conflict(j == nullptr ? b_justification::mk_axiom() : b_justification(j));
m_empty_clause = true;
SASSERT(inconsistent()); SASSERT(inconsistent());
return nullptr; return nullptr;
}
case 1: case 1:
if (j && !j->in_region()) if (j && !j->in_region())
m_justifications.push_back(j); m_justifications.push_back(j);