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check duplicate bounds info for regex terms

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This commit is contained in:
Murphy Berzish 2018-01-17 13:02:32 -05:00
parent e5585ecf4c
commit 26ab91a448
2 changed files with 35 additions and 2 deletions
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5
src/smt/theory_str.h
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@ -413,6 +413,11 @@ protected:
obj_map<expr, expr*> regex_term_to_length_constraint; // (str.in.re S R) -> (length constraint over S wrt. R)
obj_map<expr, ptr_vector<expr> > regex_term_to_extra_length_vars; // extra length vars used in regex_term_to_length_constraint entries
// keep track of the last lower/upper bound we saw for each string term
// so we don't perform duplicate work
obj_map<expr, rational> regex_last_lower_bound;
obj_map<expr, rational> regex_last_upper_bound;
// each counter maps a (str.in.re) expression to an integer.
// use helper functions regex_inc_counter() and regex_get_counter() to access
obj_map<expr, unsigned> regex_length_attempt_count;