cprover
satcheck_minisat2.h
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1 /*******************************************************************\
2 
3 Module:
4 
5 Author: Daniel Kroening, kroening@kroening.com
6 
7 \*******************************************************************/
8 
9 
10 #ifndef CPROVER_SOLVERS_SAT_SATCHECK_MINISAT2_H
11 #define CPROVER_SOLVERS_SAT_SATCHECK_MINISAT2_H
12 
13 #include "cnf.h"
14 
15 // Select one: basic solver or with simplification.
16 // Note that the solver with simplifier isn't really robust
17 // when used incrementally, as variables may disappear
18 // unless set to 'frozen'.
19 
20 namespace Minisat // NOLINT(readability/namespace)
21 {
22 class Solver; // NOLINT(readability/identifiers)
23 class SimpSolver; // NOLINT(readability/identifiers)
24 }
25 
26 template<typename T>
28 {
29 public:
30  explicit satcheck_minisat2_baset(T *);
31  virtual ~satcheck_minisat2_baset();
32 
33  virtual resultt prop_solve() override;
34  virtual tvt l_get(literalt a) const final;
35 
36  virtual void lcnf(const bvt &bv) final;
37  virtual void set_assignment(literalt a, bool value) override;
38 
39  // extra MiniSat feature: solve with assumptions
40  virtual void set_assumptions(const bvt &_assumptions) override;
41 
42  // extra MiniSat feature: default branching decision
43  void set_polarity(literalt a, bool value);
44 
45  virtual bool is_in_conflict(literalt a) const override;
46  virtual bool has_set_assumptions() const final { return true; }
47  virtual bool has_is_in_conflict() const final { return true; }
48 
49 protected:
50  T *solver;
51 
52  void add_variables();
54 };
55 
57  public satcheck_minisat2_baset<Minisat::Solver>
58 {
59 public:
61  virtual const std::string solver_text();
62 };
63 
65  public satcheck_minisat2_baset<Minisat::SimpSolver>
66 {
67 public:
69  virtual const std::string solver_text() final;
70  virtual void set_frozen(literalt a) final;
71  bool is_eliminated(literalt a) const;
72 };
73 
74 #endif // CPROVER_SOLVERS_SAT_SATCHECK_MINISAT2_H
CNF Generation, via Tseitin.
virtual bool has_is_in_conflict() const final
virtual bool has_set_assumptions() const final
Definition: threeval.h:19
resultt
Definition: prop.h:94
std::vector< literalt > bvt
Definition: literal.h:197