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fix #4930

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2021-01-08 12:15:02 -08:00
parent e902e1ef13
commit 3d39f37e63
1 changed files with 3 additions and 5 deletions
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8
src/smt/smt_conflict_resolution.cpp
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@ -839,8 +839,7 @@ namespace smt {
unsigned num_args;
switch (js.get_kind()) {
case eq_justification::AXIOM:
UNREACHABLE();
return nullptr;
return m.mk_hypothesis(m.mk_eq(n1->get_expr(), n2->get_expr()));
case eq_justification::EQUATION:
TRACE("proof_gen_bug", tout << js.get_literal() << "\n"; m_ctx.display_literal_info(tout, js.get_literal()););
return norm_eq_proof(n1, n2, get_proof(js.get_literal()));
@ -1137,9 +1136,8 @@ namespace smt {
while (lhs != rhs) {
eq_justification js = lhs->m_trans.m_justification;
switch (js.get_kind()) {
case eq_justification::AXIOM:
UNREACHABLE();
break;
case eq_justification::AXIOM:
break;
case eq_justification::EQUATION:
if (get_proof(js.get_literal()) == nullptr)
visited = false;