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fix #5016

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This commit is contained in:
Nikolaj Bjorner 2021-02-14 13:52:10 -08:00
parent 04a1d4245c
commit 083d09aa81
14 changed files with 366 additions and 294 deletions
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22
src/smt/theory_recfun.h
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@ -45,12 +45,18 @@ namespace smt {
unsigned_vector m_preds_lim;
unsigned m_num_rounds { 0 };
ptr_vector<recfun::case_expansion> m_q_case_expand;
ptr_vector<recfun::body_expansion> m_q_body_expand;
vector<literal_vector> m_q_clauses;
ptr_vector<expr> m_q_guards;
typedef recfun::propagation_item propagation_item;
bool is_enabled_guard(expr* guard) { expr_ref ng(m.mk_not(guard), m); return m_enabled_guards.contains(ng); }
scoped_ptr_vector<propagation_item> m_propagation_queue;
unsigned m_qhead { 0 };
void push_body_expand(expr* e) { push(alloc(propagation_item, alloc(recfun::body_expansion, u(), to_app(e)))); }
void push_case_expand(expr* e) { push(alloc(propagation_item, alloc(recfun::case_expansion, u(), to_app(e)))); }
void push_guard(expr* e) { push(alloc(propagation_item, e)); }
void push_core(expr_ref_vector const& core) { push(alloc(propagation_item, core)); }
void push(propagation_item* p);
bool is_enabled_guard(expr* guard) { return m_enabled_guards.contains(guard); }
bool is_disabled_guard(expr* guard) { return m_disabled_guards.contains(guard); }
recfun::util & u() const { return m_util; }
@ -62,11 +68,11 @@ namespace smt {
void activate_guard(expr* guard, expr_ref_vector const& guards);
void reset_queues();
expr_ref apply_args(unsigned depth, recfun::vars const & vars, expr_ref_vector const & args, expr * e); //!< substitute variables by args
void assert_macro_axiom(recfun::case_expansion & e);
void assert_case_axioms(recfun::case_expansion & e);
void assert_body_axiom(recfun::body_expansion & e);
void block_core(expr_ref_vector const& core);
literal mk_literal(expr* e);
void disable_guard(expr* guard, expr_ref_vector const& guards);
@ -79,8 +85,6 @@ namespace smt {
return vars.empty() || vars[vars.size()-1]->get_idx() == 0;
}
protected:
void push_case_expand(recfun::case_expansion* e) { m_q_case_expand.push_back(e); }
void push_body_expand(recfun::body_expansion* e) { m_q_body_expand.push_back(e); }
bool internalize_atom(app * atom, bool gate_ctx) override;
bool internalize_term(app * term) override;
@ -91,7 +95,6 @@ namespace smt {
void assign_eh(bool_var v, bool is_true) override;
void push_scope_eh() override;
void pop_scope_eh(unsigned num_scopes) override;
void restart_eh() override;
bool can_propagate() override;
void propagate() override;
bool should_research(expr_ref_vector &) override;
@ -104,7 +107,6 @@ namespace smt {
theory_recfun(context& ctx);
~theory_recfun() override;
theory * mk_fresh(context * new_ctx) override;
void init_search_eh() override;
void display(std::ostream & out) const override;
void collect_statistics(::statistics & st) const override;
};