diff options
Diffstat (limited to 'src/theory/strings/skolem_cache.cpp')
-rw-r--r-- | src/theory/strings/skolem_cache.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/theory/strings/skolem_cache.cpp b/src/theory/strings/skolem_cache.cpp index ebd6875eb..1e1b8cc72 100644 --- a/src/theory/strings/skolem_cache.cpp +++ b/src/theory/strings/skolem_cache.cpp @@ -94,6 +94,12 @@ SkolemCache::normalizeStringSkolem(SkolemId id, Node a, Node b) NodeManager* nm = NodeManager::currentNM(); + if (id == SK_FIRST_CTN_POST) { + id = SK_SUFFIX_REM; + Node pre = mkSkolemCached(a, b, SK_FIRST_CTN_PRE, "pre"); + b = Rewriter::rewrite(nm->mkNode(PLUS, nm->mkNode(STRING_LENGTH, pre), nm->mkNode(STRING_LENGTH, b))); + } + if (id == SK_PURIFY && a.getKind() == kind::STRING_SUBSTR) { Node s = a[0]; |