1 |
|
/****************************************************************************** |
2 |
|
* Top contributors (to current version): |
3 |
|
* Aina Niemetz |
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 |
|
* Unit tests for the bit-vector rewriter. |
14 |
|
*/ |
15 |
|
|
16 |
|
#include <iostream> |
17 |
|
#include <memory> |
18 |
|
#include <vector> |
19 |
|
|
20 |
|
#include "expr/node.h" |
21 |
|
#include "test_smt.h" |
22 |
|
#include "theory/rewriter.h" |
23 |
|
#include "util/bitvector.h" |
24 |
|
|
25 |
|
namespace cvc5 { |
26 |
|
|
27 |
|
using namespace kind; |
28 |
|
using namespace theory; |
29 |
|
|
30 |
|
namespace test { |
31 |
|
|
32 |
8 |
class TestTheoryWhiteBvRewriter : public TestSmt |
33 |
|
{ |
34 |
|
protected: |
35 |
6 |
Node boolToBv(Node b) |
36 |
|
{ |
37 |
|
return d_nodeManager->mkNode(ITE, |
38 |
|
b, |
39 |
12 |
d_nodeManager->mkConst(BitVector(1, 1u)), |
40 |
18 |
d_nodeManager->mkConst(BitVector(1, 0u))); |
41 |
|
} |
42 |
|
}; |
43 |
|
|
44 |
11 |
TEST_F(TestTheoryWhiteBvRewriter, rewrite_to_fixpoint) |
45 |
|
{ |
46 |
4 |
TypeNode boolType = d_nodeManager->booleanType(); |
47 |
4 |
TypeNode bvType = d_nodeManager->mkBitVectorType(1); |
48 |
|
|
49 |
4 |
Node zero = d_nodeManager->mkConst(BitVector(1, 0u)); |
50 |
4 |
Node b1 = d_nodeManager->mkVar("b1", boolType); |
51 |
4 |
Node b2 = d_nodeManager->mkVar("b2", boolType); |
52 |
4 |
Node b3 = d_nodeManager->mkVar("b3", boolType); |
53 |
4 |
Node bv = d_nodeManager->mkVar("bv", bvType); |
54 |
|
|
55 |
|
Node n = d_nodeManager->mkNode( |
56 |
|
BITVECTOR_ITE, |
57 |
4 |
boolToBv(b1), |
58 |
12 |
d_nodeManager->mkNode( |
59 |
|
BITVECTOR_ITE, |
60 |
4 |
boolToBv(b2), |
61 |
4 |
d_nodeManager->mkNode(BITVECTOR_ITE, boolToBv(b3), zero, bv), |
62 |
|
bv), |
63 |
12 |
bv); |
64 |
4 |
Node nr = Rewriter::rewrite(n); |
65 |
2 |
ASSERT_EQ(nr, Rewriter::rewrite(nr)); |
66 |
|
} |
67 |
|
|
68 |
11 |
TEST_F(TestTheoryWhiteBvRewriter, rewrite_bv_ite) |
69 |
|
{ |
70 |
4 |
TypeNode boolType = d_nodeManager->booleanType(); |
71 |
4 |
TypeNode bvType = d_nodeManager->mkBitVectorType(1); |
72 |
|
|
73 |
4 |
Node zero = d_nodeManager->mkConst(BitVector(1, 0u)); |
74 |
4 |
Node c1 = d_nodeManager->mkVar("c1", bvType); |
75 |
4 |
Node c2 = d_nodeManager->mkVar("c2", bvType); |
76 |
|
|
77 |
4 |
Node ite = d_nodeManager->mkNode(BITVECTOR_ITE, c2, zero, zero); |
78 |
4 |
Node n = d_nodeManager->mkNode(BITVECTOR_ITE, c1, ite, ite); |
79 |
4 |
Node nr = Rewriter::rewrite(n); |
80 |
2 |
ASSERT_EQ(nr, Rewriter::rewrite(nr)); |
81 |
|
} |
82 |
|
} // namespace test |
83 |
31889 |
} // namespace cvc5 |