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fix #4435

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-06-03 10:27:08 -07:00
parent 8ae42b5ae1
commit 377dbad3b9
1 changed files with 2 additions and 1 deletions
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3
src/smt/asserted_formulas.cpp
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@ -665,11 +665,12 @@ proof * asserted_formulas::get_inconsistency_proof() const {
return nullptr; return nullptr;
if (!m.proofs_enabled()) if (!m.proofs_enabled())
return nullptr; return nullptr;
if (!m.inc())
return nullptr;
for (justified_expr const& j : m_formulas) { for (justified_expr const& j : m_formulas) {
if (m.is_false(j.get_fml())) if (m.is_false(j.get_fml()))
return j.get_proof(); return j.get_proof();
} }
UNREACHABLE();
return nullptr; return nullptr;
} }