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This commit is contained in:
Nikolaj Bjorner 2022-05-22 07:54:27 -04:00
parent 386c511f54
commit c850259f89
3 changed files with 149 additions and 65 deletions
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9
src/ast/rewriter/seq_rewriter.h
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@ -324,10 +324,11 @@ class seq_rewriter {
bool reduce_by_length(expr_ref_vector& ls, expr_ref_vector& rs, expr_ref_pair_vector& eqs);
bool reduce_itos(expr_ref_vector& ls, expr_ref_vector& rs, expr_ref_pair_vector& eqs);
bool reduce_eq_empty(expr* l, expr* r, expr_ref& result);
bool min_length(expr_ref_vector const& es, unsigned& len);
bool min_length(expr* e, unsigned& len);
bool min_length(unsigned sz, expr* const* es, unsigned& len);
bool max_length(expr* e, rational& len);
std::pair<bool, unsigned> min_length(expr_ref_vector const& es);
std::pair<bool, unsigned> min_length(expr* e);
std::pair<bool, unsigned> min_length(unsigned sz, expr* const* es);
std::pair<bool, rational> max_length(expr* e);
bool max_length(expr* e, rational& len) { auto ml = max_length(e); len = ml.second; return ml.first; }
lbool eq_length(expr* x, expr* y);
expr* concat_non_empty(expr_ref_vector& es);
bool reduce_by_char(expr_ref& r, expr* ch, unsigned depth);