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introducing scoped detacth/attach of clauses to enforce basic sat solver invariants. Part of investigating #939:

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2017-03-22 14:12:47 -07:00
parent 25d839ed10
commit e47e8c67c0
5 changed files with 42 additions and 24 deletions
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2
src/sat/sat_elim_eqs.cpp
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@ -94,7 +94,7 @@ namespace sat {
continue;
}
if (!c.frozen())
m_solver.dettach_clause(c);
m_solver.detach_clause(c);
// apply substitution
for (i = 0; i < sz; i++) {
SASSERT(!m_solver.was_eliminated(c[i].var()));