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fixing #4670 (#4682)

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* fixing #4670

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* init

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* arrays

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* arrays

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* arrays

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* na

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
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Nikolaj Bjorner 2020-09-10 04:35:11 -07:00 • committed by GitHub
parent ee00542e76
commit cfa7c733db
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48 changed files with 1591 additions and 359 deletions
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32
src/sat/sat_extension.h
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@ -58,40 +58,40 @@ namespace sat {
virtual ~extension() {}
virtual unsigned get_id() const { return 0; }
virtual void set_solver(solver* s) = 0;
virtual void set_lookahead(lookahead* s) = 0;
virtual void set_lookahead(lookahead* s) {};
virtual void init_search() {}
virtual bool propagate(literal l, ext_constraint_idx idx) = 0;
virtual bool unit_propagate() = 0;
virtual bool is_external(bool_var v) = 0;
virtual double get_reward(literal l, ext_constraint_idx idx, literal_occs_fun& occs) const = 0;
virtual double get_reward(literal l, ext_constraint_idx idx, literal_occs_fun& occs) const { return 0; }
virtual void get_antecedents(literal l, ext_justification_idx idx, literal_vector & r, bool probing) = 0;
virtual bool is_extended_binary(ext_justification_idx idx, literal_vector & r) = 0;
virtual bool is_extended_binary(ext_justification_idx idx, literal_vector & r) { return false; }
virtual void asserted(literal l) = 0;
virtual check_result check() = 0;
virtual lbool resolve_conflict() { return l_undef; } // stores result in sat::solver::m_lemma
virtual void push() = 0;
void push_scopes(unsigned n) { for (unsigned i = 0; i < n; ++i) push(); }
virtual void pop(unsigned n) = 0;
virtual void pre_simplify() = 0;
virtual void simplify() = 0;
virtual void pre_simplify() {}
virtual void simplify() {}
// have a way to replace l by r in all constraints
virtual bool set_root(literal l, literal r) { return false; }
virtual void flush_roots() {}
virtual void clauses_modifed() = 0;
virtual lbool get_phase(bool_var v) = 0;
virtual void clauses_modifed() {}
virtual lbool get_phase(bool_var v) { return l_undef; }
virtual std::ostream& display(std::ostream& out) const = 0;
virtual std::ostream& display_justification(std::ostream& out, ext_justification_idx idx) const = 0;
virtual std::ostream& display_constraint(std::ostream& out, ext_constraint_idx idx) const = 0;
virtual void collect_statistics(statistics& st) const = 0;
virtual extension* copy(solver* s) = 0;
virtual void find_mutexes(literal_vector& lits, vector<literal_vector> & mutexes) = 0;
virtual void gc() = 0;
virtual void pop_reinit() = 0;
virtual bool validate() = 0;
virtual void init_use_list(ext_use_list& ul) = 0;
virtual bool is_blocked(literal l, ext_constraint_idx) = 0;
virtual bool check_model(model const& m) const = 0;
virtual unsigned max_var(unsigned w) const = 0;
virtual extension* copy(solver* s) { UNREACHABLE(); return nullptr; }
virtual void find_mutexes(literal_vector& lits, vector<literal_vector> & mutexes) {}
virtual void gc() {}
virtual void pop_reinit() {}
virtual bool validate() { return true; }
virtual void init_use_list(ext_use_list& ul) {}
virtual bool is_blocked(literal l, ext_constraint_idx) { return false; }
virtual bool check_model(model const& m) const { return true; }
virtual unsigned max_var(unsigned w) const { return w; }
virtual bool extract_pb(std::function<void(unsigned sz, literal const* c, unsigned k)>& card,
std::function<void(unsigned sz, literal const* c, unsigned const* coeffs, unsigned k)>& pb) {