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str.from_ubv step2

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This commit is contained in:
Nikolaj Bjorner 2021-07-12 15:00:36 +02:00
parent 1bc10cebc5
commit b6a3891ac4
10 changed files with 230 additions and 2 deletions
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8
src/smt/theory_seq.h
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@ -323,6 +323,7 @@ namespace smt {
unsigned m_fixed_length;
unsigned m_propagate_contains;
unsigned m_int_string;
unsigned m_ubv_string;
};
typedef hashtable<rational, rational::hash_proc, rational::eq_proc> rational_set;
@ -348,6 +349,8 @@ namespace smt {
unsigned m_axioms_head; // index of first axiom to add.
bool m_incomplete; // is the solver (clearly) incomplete for the fragment.
expr_ref_vector m_int_string;
expr_ref_vector m_ubv_string; // list all occurrences of str.from_ubv that have been seen
obj_hashtable<expr> m_has_ubv_axiom; // keep track of ubv that have been axiomatized within scope.
obj_hashtable<expr> m_has_length; // is length applied
expr_ref_vector m_length; // length applications themselves
obj_map<expr, unsigned> m_length_limit_map; // sequences that have length limit predicates
@ -569,6 +572,11 @@ namespace smt {
bool branch_itos();
bool branch_itos(expr* e);
// functions that convert ubv to string
void add_ubv_string(expr* e);
bool check_ubv_string();
bool check_ubv_string(expr* e);
expr_ref add_elim_string_axiom(expr* n);
void add_in_re_axiom(expr* n);
literal mk_simplified_literal(expr* n);