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remove reject states

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2018-11-24 11:06:51 -08:00
parent 33eb82c25a
commit d61d9d4ce3
2 changed files with 126 additions and 209 deletions
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22
src/smt/theory_seq.h
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@ -577,6 +577,7 @@ namespace smt {
void tightest_prefix(expr* s, expr* x);
expr_ref mk_sub(expr* a, expr* b);
expr_ref mk_add(expr* a, expr* b);
expr_ref mk_len(expr* s) const { return expr_ref(m_util.str.mk_length(s), m); }
enode* ensure_enode(expr* a);
dependency* mk_join(dependency* deps, literal lit);
@ -606,18 +607,11 @@ namespace smt {
bool is_accept(expr* acc, expr*& s, expr*& idx, expr*& re, unsigned& i, eautomaton*& aut) {
return is_acc_rej(m_accept, acc, s, idx, re, i, aut);
}
literal mk_reject(expr* s, expr* idx, expr* re, expr* state);
literal mk_reject(expr* s, expr* idx, expr* re, unsigned i) { return mk_reject(s, idx, re, m_autil.mk_int(i)); }
bool is_reject(expr* rej) const { return is_skolem(m_reject, rej); }
bool is_reject(expr* rej, expr*& s, expr*& idx, expr*& re, unsigned& i, eautomaton*& aut) {
return is_acc_rej(m_reject, rej, s, idx, re, i, aut);
}
bool is_acc_rej(symbol const& ar, expr* e, expr*& s, expr*& idx, expr*& re, unsigned& i, eautomaton*& aut);
expr_ref mk_step(expr* s, expr* tail, expr* re, unsigned i, unsigned j, expr* acc);
bool is_step(expr* e, expr*& s, expr*& tail, expr*& re, expr*& i, expr*& j, expr*& t) const;
bool is_step(expr* e) const;
void propagate_step(literal lit, expr* n);
bool add_reject2reject(expr* rej, bool& change);
bool add_accept2step(expr* acc, bool& change);
bool add_step2accept(expr* step, bool& change);
void propagate_not_prefix(expr* e);
@ -632,13 +626,13 @@ namespace smt {
void new_eq_eh(dependency* dep, enode* n1, enode* n2);
// diagnostics
void display_equations(std::ostream& out) const;
void display_equation(std::ostream& out, eq const& e) const;
void display_disequations(std::ostream& out) const;
void display_disequation(std::ostream& out, ne const& e) const;
void display_deps(std::ostream& out, dependency* deps) const;
void display_deps(std::ostream& out, literal_vector const& lits, enode_pair_vector const& eqs) const;
void display_nc(std::ostream& out, nc const& nc) const;
std::ostream& display_equations(std::ostream& out) const;
std::ostream& display_equation(std::ostream& out, eq const& e) const;
std::ostream& display_disequations(std::ostream& out) const;
std::ostream& display_disequation(std::ostream& out, ne const& e) const;
std::ostream& display_deps(std::ostream& out, dependency* deps) const;
std::ostream& display_deps(std::ostream& out, literal_vector const& lits, enode_pair_vector const& eqs) const;
std::ostream& display_nc(std::ostream& out, nc const& nc) const;
public:
theory_seq(ast_manager& m, theory_seq_params const & params);
~theory_seq() override;