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fix #3721

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-04-03 15:31:44 -07:00
parent 3bd340af44
commit 0b856638e9
1 changed files with 3 additions and 1 deletions
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4
src/sat/sat_local_search.cpp
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@ -754,10 +754,12 @@ namespace sat {
} }
add_unit(~lit, null_literal); add_unit(~lit, null_literal);
if (!propagate(~lit)) { if (!propagate(~lit)) {
IF_VERBOSE(0, verbose_stream() << "unsat\n"); IF_VERBOSE(2, verbose_stream() << "unsat\n");
m_is_unsat = true; m_is_unsat = true;
return; return;
} }
if (m_unsat_stack.empty())
return;
goto reflip; goto reflip;
} }