1 |
|
/****************************************************************************** |
2 |
|
* Top contributors (to current version): |
3 |
|
* Aina Niemetz, Morgan Deters |
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 |
|
* "Ouroborous" test: does cvc5 read its own output? |
14 |
|
* |
15 |
|
* The "Ouroborous" test, named after the serpent that swallows its |
16 |
|
* own tail, ensures that cvc5 can parse some input, output it again |
17 |
|
* (in any of its languages) and then parse it again. The result of |
18 |
|
* the first parse must be equal to the result of the second parse; |
19 |
|
* both strings and expressions are compared for equality. |
20 |
|
* |
21 |
|
* To add a new test, simply add a call to runTestString() under |
22 |
|
* runTest(), below. If you don't specify an input language, |
23 |
|
* LANG_SMTLIB_V2 is used. If your example depends on variables, |
24 |
|
* you'll need to declare them in the "declarations" global, just |
25 |
|
* below, in SMT-LIBv2 form (but they're good for all languages). |
26 |
|
*/ |
27 |
|
|
28 |
|
#include <cassert> |
29 |
|
#include <iostream> |
30 |
|
#include <string> |
31 |
|
|
32 |
|
#include "api/cpp/cvc5.h" |
33 |
|
#include "options/set_language.h" |
34 |
|
#include "parser/parser.h" |
35 |
|
#include "parser/parser_builder.h" |
36 |
|
#include "smt/command.h" |
37 |
|
|
38 |
|
using namespace cvc5; |
39 |
|
using namespace cvc5::parser; |
40 |
|
using namespace cvc5::language; |
41 |
|
|
42 |
|
int runTest(); |
43 |
|
|
44 |
1 |
int main() |
45 |
|
{ |
46 |
|
try |
47 |
|
{ |
48 |
1 |
return runTest(); |
49 |
|
} |
50 |
|
catch (api::CVC5ApiException& e) |
51 |
|
{ |
52 |
|
std::cerr << e.getMessage() << std::endl; |
53 |
|
} |
54 |
|
catch (parser::ParserException& e) |
55 |
|
{ |
56 |
|
std::cerr << e.getMessage() << std::endl; |
57 |
|
} |
58 |
|
catch (...) |
59 |
|
{ |
60 |
|
std::cerr << "non-cvc5 exception thrown" << std::endl; |
61 |
|
} |
62 |
|
return 1; |
63 |
|
} |
64 |
|
|
65 |
24 |
std::string parse(std::string instr, |
66 |
|
std::string input_language, |
67 |
|
std::string output_language) |
68 |
|
{ |
69 |
24 |
assert(input_language == "smt2" || input_language == "cvc"); |
70 |
24 |
assert(output_language == "smt2" || output_language == "cvc"); |
71 |
|
|
72 |
48 |
std::string declarations; |
73 |
|
|
74 |
24 |
if (input_language == "smt2") |
75 |
|
{ |
76 |
13 |
declarations = |
77 |
|
"\ |
78 |
|
(declare-sort U 0)\n\ |
79 |
|
(declare-fun f (U) U)\n\ |
80 |
|
(declare-fun x () U)\n\ |
81 |
|
(declare-fun y () U)\n\ |
82 |
|
(assert (= (f x) x))\n\ |
83 |
|
(declare-fun a () (Array U (Array U U)))\n\ |
84 |
|
"; |
85 |
|
} |
86 |
|
else |
87 |
|
{ |
88 |
11 |
declarations = |
89 |
|
"\ |
90 |
|
U: TYPE;\n\ |
91 |
|
f: U -> U;\n\ |
92 |
|
x,y: U;\n\ |
93 |
|
a: ARRAY U OF (ARRAY U OF U);\n\ |
94 |
|
ASSERT f(x) = x;\n\ |
95 |
|
"; |
96 |
|
} |
97 |
|
|
98 |
48 |
api::Solver solver; |
99 |
|
std::string ilang = |
100 |
48 |
input_language == "smt2" ? "LANG_SMTLIB_V2_6" : "LANG_CVC"; |
101 |
|
|
102 |
24 |
solver.setOption("input-language", input_language); |
103 |
24 |
solver.setOption("output-language", output_language); |
104 |
48 |
SymbolManager symman(&solver); |
105 |
|
std::unique_ptr<Parser> parser( |
106 |
48 |
ParserBuilder(&solver, &symman, false) |
107 |
48 |
.withInputLanguage(solver.getOption("input-language")) |
108 |
48 |
.build()); |
109 |
24 |
parser->setInput( |
110 |
|
Input::newStringInput(ilang, declarations, "internal-buffer")); |
111 |
|
// we don't need to execute the commands, but we DO need to parse them to |
112 |
|
// get the declarations |
113 |
157 |
while (Command* c = parser->nextCommand()) |
114 |
|
{ |
115 |
133 |
delete c; |
116 |
133 |
} |
117 |
24 |
assert(parser->done()); // parser should be done |
118 |
24 |
parser->setInput(Input::newStringInput(ilang, instr, "internal-buffer")); |
119 |
48 |
api::Term e = parser->nextExpression(); |
120 |
24 |
std::string s = e.toString(); |
121 |
24 |
assert(parser->nextExpression().isNull()); // next expr should be null |
122 |
48 |
return s; |
123 |
|
} |
124 |
|
|
125 |
12 |
std::string translate(std::string instr, |
126 |
|
std::string input_language, |
127 |
|
std::string output_language) |
128 |
|
{ |
129 |
12 |
assert(input_language == "smt2" || input_language == "cvc"); |
130 |
12 |
assert(output_language == "smt2" || output_language == "cvc"); |
131 |
|
|
132 |
12 |
std::cout << "==============================================" << std::endl |
133 |
12 |
<< "translating from " |
134 |
12 |
<< (input_language == "smt2" ? Language::LANG_SMTLIB_V2_6 |
135 |
12 |
: Language::LANG_CVC) |
136 |
12 |
<< " to " |
137 |
12 |
<< (output_language == "smt2" ? Language::LANG_SMTLIB_V2_6 |
138 |
12 |
: Language::LANG_CVC) |
139 |
12 |
<< " this string:" << std::endl |
140 |
12 |
<< instr << std::endl; |
141 |
12 |
std::string outstr = parse(instr, input_language, output_language); |
142 |
12 |
std::cout << "got this:" << std::endl |
143 |
12 |
<< outstr << std::endl |
144 |
12 |
<< "reparsing as " |
145 |
12 |
<< (output_language == "smt2" ? Language::LANG_SMTLIB_V2_6 |
146 |
12 |
: Language::LANG_CVC) |
147 |
12 |
<< std::endl; |
148 |
24 |
std::string poutstr = parse(outstr, output_language, output_language); |
149 |
12 |
assert(outstr == poutstr); |
150 |
12 |
std::cout << "got same expressions " << outstr << " and " << poutstr |
151 |
12 |
<< std::endl |
152 |
12 |
<< "==============================================" << std::endl; |
153 |
24 |
return outstr; |
154 |
|
} |
155 |
|
|
156 |
4 |
void runTestString(std::string instr, std::string instr_language) |
157 |
|
{ |
158 |
4 |
std::cout << std::endl |
159 |
4 |
<< "starting with: " << instr << std::endl |
160 |
4 |
<< " in language " << Language::LANG_SMTLIB_V2_6 << std::endl; |
161 |
8 |
std::string smt2str = translate(instr, instr_language, "smt2"); |
162 |
4 |
std::cout << "in SMT2 : " << smt2str << std::endl; |
163 |
8 |
std::string cvcstr = translate(smt2str, "smt2", "cvc"); |
164 |
4 |
std::cout << "in CVC : " << cvcstr << std::endl; |
165 |
8 |
std::string outstr = translate(cvcstr, "cvc", "smt2"); |
166 |
4 |
std::cout << "back to SMT2 : " << outstr << std::endl << std::endl; |
167 |
|
|
168 |
4 |
assert(outstr == smt2str); // differences in output |
169 |
4 |
} |
170 |
|
|
171 |
1 |
int32_t runTest() |
172 |
|
{ |
173 |
1 |
runTestString("(= (f (f y)) x)", "smt2"); |
174 |
1 |
runTestString("~BVPLUS(3, 0bin00, 0bin11)[2:1] = 0bin10", "cvc"); |
175 |
1 |
runTestString("~BVPLUS(3, BVMULT(2, 0bin01, 0bin11), 0bin11)[2:0]", "cvc"); |
176 |
1 |
runTestString("a[x][y] = a[y][x]", "cvc"); |
177 |
1 |
return 0; |
178 |
3 |
} |