1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
|
/********************* */
/*! \file theory_sets.h
** \verbatim
** Top contributors (to current version):
** Andrew Reynolds, Tim King, Kshitij Bansal
** This file is part of the CVC4 project.
** Copyright (c) 2009-2021 by the authors listed in the file AUTHORS
** in the top-level source directory and their institutional affiliations.
** All rights reserved. See the file COPYING in the top-level source
** directory for licensing information.\endverbatim
**
** \brief Sets theory.
**
** Sets theory.
**/
#include "cvc4_private.h"
#ifndef CVC4__THEORY__SETS__THEORY_SETS_H
#define CVC4__THEORY__SETS__THEORY_SETS_H
#include <memory>
#include "theory/sets/inference_manager.h"
#include "theory/sets/skolem_cache.h"
#include "theory/sets/solver_state.h"
#include "theory/theory.h"
#include "theory/theory_eq_notify.h"
#include "theory/uf/equality_engine.h"
namespace CVC4 {
namespace theory {
namespace sets {
class TheorySetsPrivate;
class TheorySetsScrutinize;
class TheorySets : public Theory
{
friend class TheorySetsPrivate;
friend class TheorySetsRels;
public:
/** Constructs a new instance of TheorySets w.r.t. the provided contexts. */
TheorySets(context::Context* c,
context::UserContext* u,
OutputChannel& out,
Valuation valuation,
const LogicInfo& logicInfo,
ProofNodeManager* pnm);
~TheorySets() override;
//--------------------------------- initialization
/** get the official theory rewriter of this theory */
TheoryRewriter* getTheoryRewriter() override;
/**
* Returns true if we need an equality engine. If so, we initialize the
* information regarding how it should be setup. For details, see the
* documentation in Theory::needsEqualityEngine.
*/
bool needsEqualityEngine(EeSetupInfo& esi) override;
/** finish initialization */
void finishInit() override;
//--------------------------------- end initialization
//--------------------------------- standard check
/** Post-check, called after the fact queue of the theory is processed. */
void postCheck(Effort level) override;
/** Notify fact */
void notifyFact(TNode atom, bool pol, TNode fact, bool isInternal) override;
//--------------------------------- end standard check
/** Collect model values in m based on the relevant terms given by termSet */
bool collectModelValues(TheoryModel* m,
const std::set<Node>& termSet) override;
void computeCareGraph() override;
TrustNode explain(TNode) override;
Node getModelValue(TNode) override;
std::string identify() const override { return "THEORY_SETS"; }
void preRegisterTerm(TNode node) override;
/** Expand partial operators (choose) from n. */
TrustNode expandDefinition(Node n) override;
/**
* If the sets-ext option is not set and we have an extended operator,
* we throw an exception. Additionally, we expand operators like choose
* and is_singleton.
*/
TrustNode ppRewrite(TNode n) override;
PPAssertStatus ppAssert(TrustNode tin,
TrustSubstitutionMap& outSubstitutions) override;
void presolve() override;
bool isEntailed(Node n, bool pol);
private:
/** Functions to handle callbacks from equality engine */
class NotifyClass : public TheoryEqNotifyClass
{
public:
NotifyClass(TheorySetsPrivate& theory, TheoryInferenceManager& im)
: TheoryEqNotifyClass(im), d_theory(theory)
{
}
void eqNotifyNewClass(TNode t) override;
void eqNotifyMerge(TNode t1, TNode t2) override;
void eqNotifyDisequal(TNode t1, TNode t2, TNode reason) override;
private:
TheorySetsPrivate& d_theory;
};
/** The skolem cache */
SkolemCache d_skCache;
/** The state of the sets solver at full effort */
SolverState d_state;
/** The inference manager */
InferenceManager d_im;
/** The internal theory */
std::unique_ptr<TheorySetsPrivate> d_internal;
/** Instance of the above class */
NotifyClass d_notify;
}; /* class TheorySets */
}/* CVC4::theory::sets namespace */
}/* CVC4::theory namespace */
}/* CVC4 namespace */
#endif /* CVC4__THEORY__SETS__THEORY_SETS_H */
|
