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
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
|
//===-- QueryLoggingSolver.cpp --------------------------------------------===//
//
// The KLEE Symbolic Virtual Machine
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "QueryLoggingSolver.h"
#include "klee/Config/config.h"
#include "klee/Internal/System/Time.h"
#include "klee/Statistics.h"
#ifdef HAVE_ZLIB_H
#include "klee/Internal/Support/CompressionStream.h"
#include "klee/Internal/Support/ErrorHandling.h"
#endif
#if LLVM_VERSION_CODE >= LLVM_VERSION(3, 5)
#include "llvm/Support/FileSystem.h"
#endif
using namespace klee::util;
namespace {
llvm::cl::opt<bool> DumpPartialQueryiesEarly(
"log-partial-queries-early", llvm::cl::init(false),
llvm::cl::desc("Log queries before calling the solver (default=off)"));
#ifdef HAVE_ZLIB_H
llvm::cl::opt<bool> CreateCompressedQueryLog(
"compress-query-log", llvm::cl::init(false),
llvm::cl::desc("Compress query log files (default=off)"));
#endif
}
QueryLoggingSolver::QueryLoggingSolver(Solver *_solver, std::string path,
const std::string &commentSign,
int queryTimeToLog)
: solver(_solver), os(0), BufferString(""), logBuffer(BufferString),
queryCount(0), minQueryTimeToLog(queryTimeToLog), startTime(0.0f),
lastQueryTime(0.0f), queryCommentSign(commentSign) {
#ifdef HAVE_ZLIB_H
if (!CreateCompressedQueryLog) {
#endif
#if LLVM_VERSION_CODE >= LLVM_VERSION(3, 5)
os = new llvm::raw_fd_ostream(path.c_str(), ErrorInfo,
llvm::sys::fs::OpenFlags::F_Text);
#else
os = new llvm::raw_fd_ostream(path.c_str(), ErrorInfo);
#endif
#ifdef HAVE_ZLIB_H
} else {
os = new compressed_fd_ostream((path + ".gz").c_str(), ErrorInfo);
}
if (ErrorInfo != "") {
klee_error("Could not open file %s : %s", path.c_str(), ErrorInfo.c_str());
}
#endif
assert(0 != solver);
}
QueryLoggingSolver::~QueryLoggingSolver() {
delete solver;
delete os;
}
void QueryLoggingSolver::flushBufferConditionally(bool writeToFile) {
logBuffer.flush();
if (writeToFile) {
*os << logBuffer.str();
os->flush();
}
// prepare the buffer for reuse
BufferString = "";
}
void QueryLoggingSolver::startQuery(const Query &query, const char *typeName,
const Query *falseQuery,
const std::vector<const Array *> *objects) {
Statistic *S = theStatisticManager->getStatisticByName("Instructions");
uint64_t instructions = S ? S->getValue() : 0;
logBuffer << queryCommentSign << " Query " << queryCount++ << " -- "
<< "Type: " << typeName << ", "
<< "Instructions: " << instructions << "\n";
printQuery(query, falseQuery, objects);
if (DumpPartialQueryiesEarly) {
flushBufferConditionally(true);
}
startTime = getWallTime();
}
void QueryLoggingSolver::finishQuery(bool success) {
lastQueryTime = getWallTime() - startTime;
logBuffer << queryCommentSign << " " << (success ? "OK" : "FAIL") << " -- "
<< "Elapsed: " << lastQueryTime << "\n";
if (false == success) {
logBuffer << queryCommentSign << " Failure reason: "
<< SolverImpl::getOperationStatusString(
solver->impl->getOperationStatusCode()) << "\n";
}
}
void QueryLoggingSolver::flushBuffer() {
bool writeToFile = false;
if ((0 == minQueryTimeToLog) ||
(static_cast<int>(lastQueryTime * 1000) > minQueryTimeToLog)) {
// we either do not limit logging queries or the query time
// is larger than threshold (in ms)
if ((minQueryTimeToLog >= 0) ||
(SOLVER_RUN_STATUS_TIMEOUT ==
(solver->impl->getOperationStatusCode()))) {
// we do additional check here to log only timeouts in case
// user specified negative value for minQueryTimeToLog param
writeToFile = true;
}
}
flushBufferConditionally(writeToFile);
}
bool QueryLoggingSolver::computeTruth(const Query &query, bool &isValid) {
startQuery(query, "Truth");
bool success = solver->impl->computeTruth(query, isValid);
finishQuery(success);
if (success) {
logBuffer << queryCommentSign
<< " Is Valid: " << (isValid ? "true" : "false") << "\n";
}
logBuffer << "\n";
flushBuffer();
return success;
}
bool QueryLoggingSolver::computeValidity(const Query &query,
Solver::Validity &result) {
startQuery(query, "Validity");
bool success = solver->impl->computeValidity(query, result);
finishQuery(success);
if (success) {
logBuffer << queryCommentSign << " Validity: " << result << "\n";
}
logBuffer << "\n";
flushBuffer();
return success;
}
bool QueryLoggingSolver::computeValue(const Query &query, ref<Expr> &result) {
Query withFalse = query.withFalse();
startQuery(query, "Value", &withFalse);
bool success = solver->impl->computeValue(query, result);
finishQuery(success);
if (success) {
logBuffer << queryCommentSign << " Result: " << result << "\n";
}
logBuffer << "\n";
flushBuffer();
return success;
}
bool QueryLoggingSolver::computeInitialValues(
const Query &query, const std::vector<const Array *> &objects,
std::vector<std::vector<unsigned char> > &values, bool &hasSolution) {
startQuery(query, "InitialValues", 0, &objects);
bool success =
solver->impl->computeInitialValues(query, objects, values, hasSolution);
finishQuery(success);
if (success) {
logBuffer << queryCommentSign
<< " Solvable: " << (hasSolution ? "true" : "false") << "\n";
if (hasSolution) {
std::vector<std::vector<unsigned char> >::iterator values_it =
values.begin();
for (std::vector<const Array *>::const_iterator i = objects.begin(),
e = objects.end();
i != e; ++i, ++values_it) {
const Array *array = *i;
std::vector<unsigned char> &data = *values_it;
logBuffer << queryCommentSign << " " << array->name << " = [";
for (unsigned j = 0; j < array->size; j++) {
logBuffer << (int)data[j];
if (j + 1 < array->size) {
logBuffer << ",";
}
}
logBuffer << "]\n";
}
}
}
logBuffer << "\n";
flushBuffer();
return success;
}
SolverImpl::SolverRunStatus QueryLoggingSolver::getOperationStatusCode() {
return solver->impl->getOperationStatusCode();
}
char *QueryLoggingSolver::getConstraintLog(const Query &query) {
return solver->impl->getConstraintLog(query);
}
void QueryLoggingSolver::setCoreSolverTimeout(double timeout) {
solver->impl->setCoreSolverTimeout(timeout);
}
|
