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fixing #2448 and #2445 and #2443

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2019-08-02 19:31:02 +08:00
parent c4480337c4
commit 584eee2cf4
6 changed files with 43 additions and 57 deletions
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8
src/smt/theory_seq.h
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@ -338,10 +338,6 @@ namespace smt {
obj_map<enode, obj_map<enode, int>> m_len_offset;
int m_len_prop_lvl;
obj_hashtable<expr> m_internal_nth_table;
expr_ref_vector m_internal_nth_es;
unsigned_vector m_internal_nth_lim;
seq_factory* m_factory; // value factory
exclusion_table m_exclude; // set of asserted disequalities.
expr_ref_vector m_axioms; // list of axioms to add.
@ -399,7 +395,7 @@ namespace smt {
void add_theory_assumptions(expr_ref_vector & assumptions) override;
theory* mk_fresh(context* new_ctx) override { return alloc(theory_seq, new_ctx->get_manager(), m_params); }
char const * get_name() const override { return "seq"; }
bool include_func_interp(func_decl* f) override { return false; } // m_util.str.is_nth(f); }
bool include_func_interp(func_decl* f) override { return m_util.str.is_nth_u(f); }
theory_var mk_var(enode* n) override;
void apply_sort_cnstr(enode* n, sort* s) override;
void display(std::ostream & out) const override;
@ -532,8 +528,6 @@ namespace smt {
bool is_var(expr* b) const;
bool add_solution(expr* l, expr* r, dependency* dep);
bool is_unit_nth(expr* a) const;
bool is_nth(expr* a) const;
bool is_nth(expr* a, expr*& e1, expr*& e2) const;
bool is_tail(expr* a, expr*& s, unsigned& idx) const;
bool is_eq(expr* e, expr*& a, expr*& b) const;
bool is_pre(expr* e, expr*& s, expr*& i);