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z3str3: use rational in place of unsigned during model construction

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This commit is contained in:
Murphy Berzish 2020-05-13 14:32:44 -04:00
parent 127ef59ce4
commit 5e7806c4a4
3 changed files with 36 additions and 27 deletions
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src/smt/theory_str.h
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@ -543,7 +543,7 @@ protected:
// fixed length model construction
expr_ref_vector fixed_length_subterm_trail; // trail for subterms generated *in the subsolver*
expr_ref_vector fixed_length_assumptions; // cache of boolean terms to assert *into the subsolver*, unsat core is a subset of these
obj_map<expr, unsigned> fixed_length_used_len_terms; // constraints used in generating fixed length model
obj_map<expr, rational> fixed_length_used_len_terms; // constraints used in generating fixed length model
obj_map<expr, ptr_vector<expr> > var_to_char_subterm_map; // maps a var to a list of character terms *in the subsolver*
obj_map<expr, ptr_vector<expr> > uninterpreted_to_char_subterm_map; // maps an "uninterpreted" string term to a list of character terms *in the subsolver*
obj_map<expr, std::tuple<rational, expr*, expr*>> fixed_length_lesson; //keep track of information for the lesson
@ -603,7 +603,7 @@ protected:
expr* refine_dis(expr* lhs, expr* rhs);
expr* refine_function(expr* f);
bool flatten(expr* ex, expr_ref_vector & flat);
unsigned get_refine_length(expr* ex, expr_ref_vector& extra_deps);
rational get_refine_length(expr* ex, expr_ref_vector& extra_deps);
void instantiate_axiom_CharAt(enode * e);
void instantiate_axiom_prefixof(enode * e);