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//===-- QueryLoggingSolver.cpp --------------------------------------------===//
#include "QueryLoggingSolver.h"
#include "klee/Internal/System/Time.h"
#include "klee/Statistics.h"
//
// The KLEE Symbolic Virtual Machine
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
using namespace klee::util;
QueryLoggingSolver::QueryLoggingSolver(Solver *_solver,
std::string path,
const std::string& commentSign,
int queryTimeToLog)
: solver(_solver),
os(path.c_str(), std::ios::trunc),
logBuffer(""),
queryCount(0),
minQueryTimeToLog(queryTimeToLog),
startTime(0.0f),
lastQueryTime(0.0f),
queryCommentSign(commentSign) {
assert(0 != solver);
}
QueryLoggingSolver::~QueryLoggingSolver() {
delete solver;
}
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);
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() {
logBuffer.flush();
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
os << logBuffer.str();
}
}
// prepare the buffer for reuse
logBuffer.clear();
logBuffer.str("");
}
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();
}
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