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//===-- 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/Support/OptionCategories.h"
#include "klee/Statistics/Statistics.h"
#include "klee/Support/ErrorHandling.h"
#include "klee/Support/FileHandling.h"
#include "klee/System/Time.h"
#include <utility>
namespace {
llvm::cl::opt<bool> DumpPartialQueryiesEarly(
"log-partial-queries-early", llvm::cl::init(false),
llvm::cl::desc("Log queries before calling the solver (default=false)"),
llvm::cl::cat(klee::SolvingCat));
#ifdef HAVE_ZLIB_H
llvm::cl::opt<bool> CreateCompressedQueryLog(
"compress-query-log", llvm::cl::init(false),
llvm::cl::desc("Compress query log files (default=false)"),
llvm::cl::cat(klee::SolvingCat));
#endif
} // namespace
QueryLoggingSolver::QueryLoggingSolver(std::unique_ptr<Solver> solver,
std::string path,
const std::string &commentSign,
time::Span queryTimeToLog,
bool logTimedOut)
: solver(std::move(solver)), BufferString(""), logBuffer(BufferString),
queryCount(0), minQueryTimeToLog(queryTimeToLog),
logTimedOutQueries(logTimedOut), queryCommentSign(commentSign) {
std::string error;
#ifdef HAVE_ZLIB_H
if (!CreateCompressedQueryLog) {
#endif
os = klee_open_output_file(path, error);
#ifdef HAVE_ZLIB_H
} else {
path.append(".gz");
os = klee_open_compressed_output_file(path, error);
}
#endif
if (!os) {
klee_error("Could not open file %s : %s", path.c_str(), error.c_str());
}
assert(this->solver);
}
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 = time::getWallTime();
}
void QueryLoggingSolver::finishQuery(bool success) {
lastQueryDuration = time::getWallTime() - startTime;
logBuffer << queryCommentSign << " " << (success ? "OK" : "FAIL") << " -- "
<< "Elapsed: " << lastQueryDuration << "\n";
if (false == success) {
logBuffer << queryCommentSign << " Failure reason: "
<< SolverImpl::getOperationStatusString(
solver->impl->getOperationStatusCode()) << "\n";
}
}
void QueryLoggingSolver::flushBuffer() {
// we either do not limit logging queries
// or the query time is larger than threshold
// or we log a timed out query
bool writeToFile = (!minQueryTimeToLog)
|| (lastQueryDuration > minQueryTimeToLog)
|| (logTimedOutQueries &&
(SOLVER_RUN_STATUS_TIMEOUT == solver->impl->getOperationStatusCode()));
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();
}
std::string QueryLoggingSolver::getConstraintLog(const Query &query) {
return solver->impl->getConstraintLog(query);
}
void QueryLoggingSolver::setCoreSolverTimeout(time::Span timeout) {
solver->impl->setCoreSolverTimeout(timeout);
}
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