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fix #3961 fix #3940

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-04-14 17:33:44 -07:00
parent 7ed9996fc0
commit 835b57b775
9 changed files with 100 additions and 97 deletions
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8
src/smt/theory_seq.h
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@ -171,8 +171,8 @@ namespace smt {
eq mk_eqdep(expr* l, expr* r, dependency* dep) {
expr_ref_vector ls(m), rs(m);
m_util.str.get_concat(l, ls);
m_util.str.get_concat(r, rs);
m_util.str.get_concat_units(l, ls);
m_util.str.get_concat_units(r, rs);
return eq(m_eq_id++, ls, rs, dep);
}
@ -393,7 +393,8 @@ namespace smt {
expr_ref_vector m_length; // length applications themselves
scoped_ptr_vector<apply> m_replay; // set of actions to replay
model_generator* m_mg;
th_rewriter m_rewrite;
th_rewriter m_rewrite; // rewriter that converts strings to character concats
th_rewriter m_str_rewrite; // rewriter that coonverts character concats to strings
seq_rewriter m_seq_rewrite;
seq_util m_util;
arith_util m_autil;
@ -678,7 +679,6 @@ namespace smt {
bool get_length(expr* s, rational& val);
void mk_decompose(expr* e, expr_ref& head, expr_ref& tail);
expr_ref coalesce_chars(expr* const& str);
expr_ref mk_skolem(symbol const& s, expr* e1, expr* e2 = nullptr, expr* e3 = nullptr, expr* e4 = nullptr, sort* range = nullptr);
bool is_skolem(symbol const& s, expr* e) const;