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| author | Andrew Reynolds <andrew.j.reynolds@gmail.com> | 2018-12-04 16:04:47 -0600 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2018-12-04 16:04:47 -0600 |
| commit | 33ec6ac29c55ac6db7d86a700cb5e8f06b93ab96 (patch) | |
| tree | d8c9eaf2d309f89602b1b6a5363b1688721cb757 /src/theory/quantifiers/sygus/sygus_pbe.cpp | |
| parent | cf7a6431e7fdcbb30704343f57411154464e0c30 (diff) | |
Apply extended rewriting on PBE static symmetry breaking. (#2735)
Diffstat (limited to 'src/theory/quantifiers/sygus/sygus_pbe.cpp')
| -rw-r--r-- | src/theory/quantifiers/sygus/sygus_pbe.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/theory/quantifiers/sygus/sygus_pbe.cpp b/src/theory/quantifiers/sygus/sygus_pbe.cpp index e8aa0a7f0..7891814be 100644 --- a/src/theory/quantifiers/sygus/sygus_pbe.cpp +++ b/src/theory/quantifiers/sygus/sygus_pbe.cpp @@ -272,6 +272,10 @@ bool SygusPbe::initialize(Node n, Assert(!ag.isNull()); disj.push_back(ag.negate()); Node lem = disj.size() == 1 ? disj[0] : nm->mkNode(OR, disj); + // Apply extended rewriting on the lemma. This helps utilities like + // SygusEnumerator more easily recognize the shape of this lemma, e.g. + // ( ~is-ite(x) or ( ~is-ite(x) ^ P ) ) --> ~is-ite(x). + lem = d_tds->getExtRewriter()->extendedRewrite(lem); Trace("sygus-pbe") << " static redundant op lemma : " << lem << std::endl; // Register as a symmetry breaking lemma with the term database. |