1 |
|
/****************************************************************************** |
2 |
|
* Top contributors (to current version): |
3 |
|
* Mathias Preiner, Liana Hadarean, Tim King |
4 |
|
* |
5 |
|
* This file is part of the cvc5 project. |
6 |
|
* |
7 |
|
* Copyright (c) 2009-2021 by the authors listed in the file AUTHORS |
8 |
|
* in the top-level source directory and their institutional affiliations. |
9 |
|
* All rights reserved. See the file COPYING in the top-level source |
10 |
|
* directory for licensing information. |
11 |
|
* **************************************************************************** |
12 |
|
* |
13 |
|
* Eager bit-blasting solver. |
14 |
|
*/ |
15 |
|
|
16 |
|
#include "theory/bv/bv_eager_solver.h" |
17 |
|
|
18 |
|
#include "options/bv_options.h" |
19 |
|
#include "options/smt_options.h" |
20 |
|
#include "theory/bv/bitblast/aig_bitblaster.h" |
21 |
|
#include "theory/bv/bitblast/eager_bitblaster.h" |
22 |
|
|
23 |
|
using namespace std; |
24 |
|
|
25 |
|
namespace cvc5 { |
26 |
|
namespace theory { |
27 |
|
namespace bv { |
28 |
|
|
29 |
39 |
EagerBitblastSolver::EagerBitblastSolver(context::Context* c, BVSolverLazy* bv) |
30 |
|
: d_assertionSet(c), |
31 |
|
d_assumptionSet(c), |
32 |
|
d_context(c), |
33 |
|
d_bitblaster(), |
34 |
|
d_aigBitblaster(), |
35 |
39 |
d_useAig(options::bitvectorAig()), |
36 |
78 |
d_bv(bv) |
37 |
|
{ |
38 |
39 |
} |
39 |
|
|
40 |
39 |
EagerBitblastSolver::~EagerBitblastSolver() {} |
41 |
|
|
42 |
|
void EagerBitblastSolver::turnOffAig() { |
43 |
|
Assert(d_aigBitblaster == nullptr && d_bitblaster == nullptr); |
44 |
|
d_useAig = false; |
45 |
|
} |
46 |
|
|
47 |
29 |
void EagerBitblastSolver::initialize() { |
48 |
29 |
Assert(!isInitialized()); |
49 |
29 |
if (d_useAig) { |
50 |
|
#ifdef CVC5_USE_ABC |
51 |
|
d_aigBitblaster.reset(new AigBitblaster()); |
52 |
|
#else |
53 |
|
Unreachable(); |
54 |
|
#endif |
55 |
|
} else { |
56 |
29 |
d_bitblaster.reset(new EagerBitblaster(d_bv, d_context)); |
57 |
|
} |
58 |
29 |
} |
59 |
|
|
60 |
2952 |
bool EagerBitblastSolver::isInitialized() { |
61 |
2952 |
const bool init = d_aigBitblaster != nullptr || d_bitblaster != nullptr; |
62 |
2952 |
Assert(!init || !d_useAig || d_aigBitblaster); |
63 |
2952 |
Assert(!init || d_useAig || d_bitblaster); |
64 |
2952 |
return init; |
65 |
|
} |
66 |
|
|
67 |
620 |
void EagerBitblastSolver::assertFormula(TNode formula) { |
68 |
620 |
d_bv->spendResource(Resource::BvEagerAssertStep); |
69 |
620 |
Assert(isInitialized()); |
70 |
1240 |
Debug("bitvector-eager") << "EagerBitblastSolver::assertFormula " << formula |
71 |
620 |
<< "\n"; |
72 |
620 |
if (options::incrementalSolving() && d_context->getLevel() > 1) |
73 |
|
{ |
74 |
48 |
d_assumptionSet.insert(formula); |
75 |
|
} |
76 |
620 |
d_assertionSet.insert(formula); |
77 |
|
// ensures all atoms are bit-blasted and converted to AIG |
78 |
620 |
if (d_useAig) { |
79 |
|
#ifdef CVC5_USE_ABC |
80 |
|
d_aigBitblaster->bbFormula(formula); |
81 |
|
#else |
82 |
|
Unreachable(); |
83 |
|
#endif |
84 |
|
} |
85 |
|
else |
86 |
|
{ |
87 |
620 |
d_bitblaster->bbFormula(formula); |
88 |
|
} |
89 |
620 |
} |
90 |
|
|
91 |
53 |
bool EagerBitblastSolver::checkSat() { |
92 |
53 |
Assert(isInitialized()); |
93 |
53 |
if (d_assertionSet.empty()) { |
94 |
2 |
return true; |
95 |
|
} |
96 |
|
|
97 |
51 |
if (d_useAig) { |
98 |
|
#ifdef CVC5_USE_ABC |
99 |
|
const std::vector<Node> assertions = {d_assertionSet.key_begin(), |
100 |
|
d_assertionSet.key_end()}; |
101 |
|
Assert(!assertions.empty()); |
102 |
|
|
103 |
|
Node query = utils::mkAnd(assertions); |
104 |
|
return d_aigBitblaster->solve(query); |
105 |
|
#else |
106 |
|
Unreachable(); |
107 |
|
#endif |
108 |
|
} |
109 |
|
|
110 |
51 |
if (options::incrementalSolving()) |
111 |
|
{ |
112 |
|
const std::vector<Node> assumptions = {d_assumptionSet.key_begin(), |
113 |
68 |
d_assumptionSet.key_end()}; |
114 |
34 |
return d_bitblaster->solve(assumptions); |
115 |
|
} |
116 |
17 |
return d_bitblaster->solve(); |
117 |
|
} |
118 |
|
|
119 |
9 |
bool EagerBitblastSolver::collectModelInfo(TheoryModel* m, bool fullModel) |
120 |
|
{ |
121 |
9 |
AlwaysAssert(!d_useAig && d_bitblaster); |
122 |
9 |
return d_bitblaster->collectModelInfo(m, fullModel); |
123 |
|
} |
124 |
|
|
125 |
|
} // namespace bv |
126 |
|
} // namespace theory |
127 |
28191 |
} // namespace cvc5 |