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working on pdr

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2012-10-14 11:13:36 -07:00
parent 990b93c2fd
commit bf0481c4d0
5 changed files with 236 additions and 193 deletions
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35
lib/pdr_prop_solver.h
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@ -33,6 +33,7 @@ Revision History:
namespace pdr {
class prop_solver {
private:
front_end_params& m_fparams;
ast_manager& m;
@ -44,7 +45,11 @@ namespace pdr {
app_ref_vector m_pos_level_atoms; // atoms used to identify level
app_ref_vector m_neg_level_atoms; //
obj_hashtable<expr> m_level_atoms_set;
app_ref_vector m_fresh; // predicates for assumptions
app_ref_vector m_proxies; // predicates for assumptions
expr_ref_vector* m_core;
model_ref* m_model;
bool m_subset_based_core;
bool m_assumes_level;
func_decl_set m_aux_symbols;
bool m_in_level;
unsigned m_current_level; // set when m_in_level
@ -55,13 +60,14 @@ namespace pdr {
void ensure_level(unsigned lvl);
class safe_assumptions;
void extract_theory_core(safe_assumptions& assumptions);
void extract_subset_core(safe_assumptions& assumptions);
lbool check_safe_assumptions(
safe_assumptions& assumptions,
expr_ref_vector const& atoms,
expr_ref_vector * core,
model_ref * mdl,
bool& assumes_level);
expr_ref_vector const& atoms);
public:
@ -73,6 +79,11 @@ namespace pdr {
m_aux_symbols.contains(s) ||
m_ctx->is_aux_predicate(s);
}
void set_core(expr_ref_vector* core) { m_core = core; }
void set_model(model_ref* mdl) { m_model = mdl; }
void set_subset_based_core(bool f) { m_subset_based_core = f; }
bool assumes_level() const { return m_assumes_level; }
void add_level();
unsigned level_cnt() const;
@ -99,24 +110,16 @@ namespace pdr {
* If the conjunction of atoms is consistent with the solver state and o_model is non-zero,
* o_model will contain the "o" literals true in the assignment.
*/
lbool check_assumptions(
const expr_ref_vector & atoms,
expr_ref_vector * core, model_ref * mdl,
bool& assumes_level);
lbool check_assumptions(const expr_ref_vector & atoms);
lbool check_conjunction_as_assumptions(
expr * conj, expr_ref_vector * core,
model_ref * mdl, bool& assumes_level);
lbool check_conjunction_as_assumptions(expr * conj);
/**
* Like check_assumptions, except it also asserts an extra formula
*/
lbool check_assumptions_and_formula(
const expr_ref_vector & atoms,
expr * form,
expr_ref_vector * core,
model_ref * mdl,
bool& assumes_level);
expr * form);
void collect_statistics(statistics& st) const;