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fix bugs related to use of lookahead equivalences and encoding of pb constraints

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2017-05-15 09:33:27 -07:00
parent c49550ff2d
commit 2033e649b5
8 changed files with 115 additions and 70 deletions
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11
src/sat/sat_simplifier.cpp
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@ -207,10 +207,6 @@ namespace sat {
}
while (!m_sub_todo.empty());
if (!learned) {
// perform lookahead simplification
lookahead(s).simplify();
}
bool vars_eliminated = m_num_elim_vars > m_old_num_elim_vars;
@ -228,6 +224,13 @@ namespace sat {
}
}
if (!learned && s.m_config.m_lookahead_simplify) {
// perform lookahead simplification
lookahead lh(s);
lh.simplify();
lh.collect_statistics(s.m_aux_stats);
}
CASSERT("sat_solver", s.check_invariant());
TRACE("after_simplifier", s.display(tout); tout << "model_converter:\n"; s.m_mc.display(tout););
finalize();