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wreckfun

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This commit is contained in:
Nikolaj Bjorner 2021-02-12 19:46:47 -08:00
parent 612cc5cfba
commit 83f4a006c6
11 changed files with 402 additions and 219 deletions
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75
src/smt/theory_recfun.h
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@ -31,62 +31,6 @@ namespace smt {
void reset() { memset(this, 0, sizeof(stats)); }
stats() { reset(); }
};
// one case-expansion of `f(t1...tn)`
struct case_expansion {
app * m_lhs; // the term to expand
recfun::def * m_def;
ptr_vector<expr> m_args;
case_expansion(recfun::util& u, app * n) :
m_lhs(n), m_def(nullptr), m_args() {
SASSERT(u.is_defined(n));
func_decl * d = n->get_decl();
m_def = &u.get_def(d);
m_args.append(n->get_num_args(), n->get_args());
}
case_expansion(case_expansion const & from)
: m_lhs(from.m_lhs),
m_def(from.m_def),
m_args(from.m_args) {}
case_expansion(case_expansion && from)
: m_lhs(from.m_lhs),
m_def(from.m_def),
m_args(std::move(from.m_args)) {}
};
struct pp_case_expansion {
case_expansion & e;
ast_manager & m;
pp_case_expansion(case_expansion & e, ast_manager & m) : e(e), m(m) {}
};
friend std::ostream& operator<<(std::ostream&, pp_case_expansion const &);
// one body-expansion of `f(t1...tn)` using a `C_f_i(t1...tn)`
struct body_expansion {
app* m_pred;
recfun::case_def const * m_cdef;
ptr_vector<expr> m_args;
body_expansion(recfun::util& u, app * n) : m_pred(n), m_cdef(nullptr), m_args() {
m_cdef = &u.get_case_def(n);
m_args.append(n->get_num_args(), n->get_args());
}
body_expansion(app* pred, recfun::case_def const & d, ptr_vector<expr> & args) :
m_pred(pred), m_cdef(&d), m_args(args) {}
body_expansion(body_expansion const & from):
m_pred(from.m_pred), m_cdef(from.m_cdef), m_args(from.m_args) {}
body_expansion(body_expansion && from) :
m_pred(from.m_pred), m_cdef(from.m_cdef), m_args(std::move(from.m_args)) {}
};
struct pp_body_expansion {
body_expansion & e;
ast_manager & m;
pp_body_expansion(body_expansion & e, ast_manager & m) : e(e), m(m) {}
};
friend std::ostream& operator<<(std::ostream&, pp_body_expansion const &);
recfun::decl::plugin& m_plugin;
recfun::util& m_util;
@ -99,10 +43,10 @@ namespace smt {
obj_map<expr, unsigned> m_pred_depth;
expr_ref_vector m_preds;
unsigned_vector m_preds_lim;
unsigned m_num_rounds;
unsigned m_num_rounds { 0 };
ptr_vector<case_expansion> m_q_case_expand;
ptr_vector<body_expansion> m_q_body_expand;
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;
@ -119,13 +63,12 @@ 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, ptr_vector<expr> const & args, expr * e); //!< substitute variables by args
void assert_macro_axiom(case_expansion & e);
void assert_case_axioms(case_expansion & e);
void assert_body_axiom(body_expansion & e);
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);
literal mk_literal(expr* e);
void add_induction_lemmas(unsigned depth);
void disable_guard(expr* guard, expr_ref_vector const& guards);
unsigned get_depth(expr* e);
void set_depth(unsigned d, expr* e);
@ -136,8 +79,8 @@ namespace smt {
return vars.empty() || vars[vars.size()-1]->get_idx() == 0;
}
protected:
void push_case_expand(case_expansion* e) { m_q_case_expand.push_back(e); }
void push_body_expand(body_expansion* e) { m_q_body_expand.push_back(e); }
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;