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
|
/******************************************************************************
* Top contributors (to current version):
* Aina Niemetz, Andrew Reynolds, Andres Noetzli
*
* This file is part of the cvc5 project.
*
* Copyright (c) 2009-2025 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.
* ****************************************************************************
*
* [[ Add one-line brief description here ]]
*
* [[ Add lengthier description here ]]
* \todo document this file
*/
#include <vector>
#include "expr/node.h"
#include "test_smt.h"
#include "theory/bv/theory_bv_utils.h"
#include "theory/evaluator.h"
#include "theory/rewriter.h"
#include "util/rational.h"
using namespace cvc5::internal::theory;
namespace cvc5::internal {
namespace test {
class TestTheoryWhiteEvaluator : public TestSmt
{
};
TEST_F(TestTheoryWhiteEvaluator, simple)
{
TypeNode bv64Type = d_nodeManager->mkBitVectorType(64);
Node w = d_nodeManager->mkVar("w", bv64Type);
Node x = d_nodeManager->mkVar("x", bv64Type);
Node y = d_nodeManager->mkVar("y", bv64Type);
Node z = d_nodeManager->mkVar("z", bv64Type);
Node zero = d_nodeManager->mkConst(BitVector(64, (unsigned int)0));
Node one = d_nodeManager->mkConst(BitVector(64, (unsigned int)1));
Node c1 = d_nodeManager->mkConst(BitVector(
64,
(unsigned int)0b0000000100000101001110111001101000101110011101011011110011100111));
Node c2 = d_nodeManager->mkConst(BitVector(
64,
(unsigned int)0b0000000100000101001110111001101000101110011101011011110011100111));
Node t = d_nodeManager->mkNode(
Kind::ITE, d_nodeManager->mkNode(Kind::EQUAL, y, one), x, w);
std::vector<Node> args = {w, x, y, z};
std::vector<Node> vals = {c1, zero, one, c1};
Rewriter* rr = d_slvEngine->getEnv().getRewriter();
Evaluator eval(rr);
Node r = eval.eval(t, args, vals);
ASSERT_EQ(r,
rr->rewrite(t.substitute(
args.begin(), args.end(), vals.begin(), vals.end())));
}
TEST_F(TestTheoryWhiteEvaluator, loop)
{
TypeNode bv64Type = d_nodeManager->mkBitVectorType(64);
Node w = d_nodeManager->mkBoundVar(bv64Type);
Node x = d_nodeManager->mkVar("x", bv64Type);
Node zero = d_nodeManager->mkConst(BitVector(1, (unsigned int)0));
Node one = d_nodeManager->mkConst(BitVector(64, (unsigned int)1));
Node c = d_nodeManager->mkConst(BitVector(
64,
(unsigned int)0b0001111000010111110000110110001101011110111001101100000101010100));
Node largs = d_nodeManager->mkNode(Kind::BOUND_VAR_LIST, w);
Node lbody = d_nodeManager->mkNode(
Kind::BITVECTOR_CONCAT, bv::utils::mkExtract(w, 62, 0), zero);
Node lambda = d_nodeManager->mkNode(Kind::LAMBDA, largs, lbody);
Node t =
d_nodeManager->mkNode(Kind::BITVECTOR_AND,
d_nodeManager->mkNode(Kind::APPLY_UF, lambda, one),
d_nodeManager->mkNode(Kind::APPLY_UF, lambda, x));
std::vector<Node> args = {x};
std::vector<Node> vals = {c};
Rewriter* rr = d_slvEngine->getEnv().getRewriter();
Evaluator eval(rr);
Node r = eval.eval(t, args, vals);
ASSERT_EQ(r,
rr->rewrite(t.substitute(
args.begin(), args.end(), vals.begin(), vals.end())));
}
TEST_F(TestTheoryWhiteEvaluator, strIdOf)
{
Node a = d_nodeManager->mkConst(String("A"));
Node empty = d_nodeManager->mkConst(String(""));
Node one = d_nodeManager->mkConstInt(Rational(1));
Node two = d_nodeManager->mkConstInt(Rational(2));
std::vector<Node> args;
std::vector<Node> vals;
Rewriter* rr = d_slvEngine->getEnv().getRewriter();
Evaluator eval(rr);
{
Node n = d_nodeManager->mkNode(Kind::STRING_INDEXOF, a, empty, one);
Node r = eval.eval(n, args, vals);
ASSERT_EQ(r, rr->rewrite(n));
}
{
Node n = d_nodeManager->mkNode(Kind::STRING_INDEXOF, a, a, one);
Node r = eval.eval(n, args, vals);
ASSERT_EQ(r, rr->rewrite(n));
}
{
Node n = d_nodeManager->mkNode(Kind::STRING_INDEXOF, a, empty, two);
Node r = eval.eval(n, args, vals);
ASSERT_EQ(r, rr->rewrite(n));
}
{
Node n = d_nodeManager->mkNode(Kind::STRING_INDEXOF, a, a, two);
Node r = eval.eval(n, args, vals);
ASSERT_EQ(r, rr->rewrite(n));
}
}
TEST_F(TestTheoryWhiteEvaluator, code)
{
Node a = d_nodeManager->mkConst(String("A"));
Node empty = d_nodeManager->mkConst(String(""));
std::vector<Node> args;
std::vector<Node> vals;
Rewriter* rr = d_slvEngine->getEnv().getRewriter();
Evaluator eval(rr);
// (str.code "A") ---> 65
{
Node n = d_nodeManager->mkNode(Kind::STRING_TO_CODE, a);
Node r = eval.eval(n, args, vals);
ASSERT_EQ(r, d_nodeManager->mkConstInt(Rational(65)));
}
// (str.code "") ---> -1
{
Node n = d_nodeManager->mkNode(Kind::STRING_TO_CODE, empty);
Node r = eval.eval(n, args, vals);
ASSERT_EQ(r, d_nodeManager->mkConstInt(Rational(-1)));
}
}
} // namespace test
} // namespace cvc5::internal
|
