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
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
|
/********************* */
/*! \file expr_miner_manager.cpp
** \verbatim
** Top contributors (to current version):
** Andrew Reynolds
** This file is part of the CVC4 project.
** Copyright (c) 2009-2018 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 Implementation of expression miner manager.
**/
#include "theory/quantifiers/expr_miner_manager.h"
#include "theory/quantifiers_engine.h"
#include "options/quantifiers_options.h"
namespace CVC4 {
namespace theory {
namespace quantifiers {
ExpressionMinerManager::ExpressionMinerManager()
: d_doRewSynth(false),
d_doQueryGen(false),
d_doFilterLogicalStrength(false),
d_use_sygus_type(false),
d_qe(nullptr),
d_tds(nullptr)
{
}
void ExpressionMinerManager::initialize(const std::vector<Node>& vars,
TypeNode tn,
unsigned nsamples,
bool unique_type_ids)
{
d_doRewSynth = false;
d_doQueryGen = false;
d_doFilterLogicalStrength = false;
d_sygus_fun = Node::null();
d_use_sygus_type = false;
d_qe = nullptr;
d_tds = nullptr;
// initialize the sampler
d_sampler.initialize(tn, vars, nsamples, unique_type_ids);
}
void ExpressionMinerManager::initializeSygus(QuantifiersEngine* qe,
Node f,
unsigned nsamples,
bool useSygusType)
{
d_doRewSynth = false;
d_doQueryGen = false;
d_doFilterLogicalStrength = false;
d_sygus_fun = f;
d_use_sygus_type = useSygusType;
d_qe = qe;
d_tds = qe->getTermDatabaseSygus();
// initialize the sampler
d_sampler.initializeSygus(d_tds, f, nsamples, useSygusType);
}
void ExpressionMinerManager::enableRewriteRuleSynth()
{
if (d_doRewSynth)
{
// already enabled
return;
}
d_doRewSynth = true;
std::vector<Node> vars;
d_sampler.getVariables(vars);
// initialize the candidate rewrite database
if (!d_sygus_fun.isNull())
{
Assert(d_qe != nullptr);
d_crd.initializeSygus(vars, d_qe, d_sygus_fun, &d_sampler);
}
else
{
d_crd.initialize(vars, &d_sampler);
}
d_crd.setExtendedRewriter(&d_ext_rew);
d_crd.setSilent(false);
}
void ExpressionMinerManager::enableQueryGeneration(unsigned deqThresh)
{
if (d_doQueryGen)
{
// already enabled
return;
}
d_doQueryGen = true;
std::vector<Node> vars;
d_sampler.getVariables(vars);
// must also enable rewrite rule synthesis
if (!d_doRewSynth)
{
// initialize the candidate rewrite database, in silent mode
enableRewriteRuleSynth();
d_crd.setSilent(true);
}
// initialize the query generator
d_qg.initialize(vars, &d_sampler);
d_qg.setThreshold(deqThresh);
}
void ExpressionMinerManager::enableFilterWeakSolutions()
{
d_doFilterLogicalStrength = true;
std::vector<Node> vars;
d_sampler.getVariables(vars);
d_sols.initialize(vars, &d_sampler);
d_sols.setLogicallyStrong(true);
}
void ExpressionMinerManager::enableFilterStrongSolutions()
{
d_doFilterLogicalStrength = true;
std::vector<Node> vars;
d_sampler.getVariables(vars);
d_sols.initialize(vars, &d_sampler);
d_sols.setLogicallyStrong(false);
}
bool ExpressionMinerManager::addTerm(Node sol,
std::ostream& out,
bool& rew_print)
{
// set the builtin version
Node solb = sol;
if (d_use_sygus_type)
{
solb = d_tds->sygusToBuiltin(sol);
}
// add to the candidate rewrite rule database
bool ret = true;
if (d_doRewSynth)
{
ret = d_crd.addTerm(sol, options::sygusRewSynthRec(), out, rew_print);
}
// a unique term, let's try the query generator
if (ret && d_doQueryGen)
{
d_qg.addTerm(solb, out);
}
// filter based on logical strength
if (ret && d_doFilterLogicalStrength)
{
ret = d_sols.addTerm(solb, out);
}
return ret;
}
bool ExpressionMinerManager::addTerm(Node sol, std::ostream& out)
{
bool rew_print = false;
return addTerm(sol, out, rew_print);
}
} // namespace quantifiers
} // namespace theory
} // namespace CVC4
|
