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fix gc to not remove ternary clauses that are on assignment trail. This addresses issue with drat proofs that don't pass drat-trim due to deletion during gc, but use in conflicts

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2019-02-22 11:14:20 +01:00
parent 598fc810b5
commit 4c799c144a
11 changed files with 201 additions and 71 deletions
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2
src/sat/sat_elim_eqs.cpp
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@ -207,7 +207,7 @@ namespace sat {
c.update_approx();
}
if (m_solver.m_config.m_drat) {
m_solver.m_drat.add(c, true);
m_solver.m_drat.add(c, true);
drat_delete_clause();
}