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Re-fixing a bug in compute_implicant_literals()

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Arie Gurfinkel 2018-06-09 10:34:05 -07:00
parent 8445e2a7a2
commit 4a2eb909bf
1 changed files with 8 additions and 0 deletions
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8
src/muz/spacer/spacer_util.cpp
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@ -603,6 +603,14 @@ namespace {
void compute_implicant_literals (model_evaluator_util &mev, expr_ref_vector &formula,
expr_ref_vector &res) {
// flatten the formula and remove all trivial literals
// TBD: not clear why there is a dependence on it (other than
// not handling of Boolean constants by implicant_picker), however,
// it was a source of a problem on a benchmark
flatten_and(formula);
if (formula.empty()) {return;}
implicant_picker ipick (mev);
ipick (formula, res);
}