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empty clause handling

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2019-12-10 02:45:40 -08:00
parent 04df77e89d
commit 4b22ff2d3b
2 changed files with 3 additions and 3 deletions
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4
src/smt/smt_context.cpp
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@ -2399,8 +2399,8 @@ namespace smt {
m_empty_clause = false; m_empty_clause = false;
} }
else { else {
// m_conflict = m_empty_clause ? b_justification::mk_axiom() : null_b_justification; m_conflict = m_empty_clause ? b_justification::mk_axiom() : null_b_justification;
m_conflict = null_b_justification; // m_conflict = null_b_justification;
m_not_l = null_literal; m_not_l = null_literal;
} }
del_clauses(m_aux_clauses, s.m_aux_clauses_lim); del_clauses(m_aux_clauses, s.m_aux_clauses_lim);

2
src/smt/smt_internalizer.cpp
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@ -1351,7 +1351,7 @@ namespace smt {
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; m_empty_clause = (j == nullptr);
SASSERT(inconsistent()); SASSERT(inconsistent());
return nullptr; return nullptr;
case 1: case 1: