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//===-- PCLoggingSolver.cpp -----------------------------------------------===//
//
// The KLEE Symbolic Virtual Machine
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "klee/Solver.h"
#include "klee/Expr.h"
#include "klee/SolverImpl.h"
#include "klee/Statistics.h"
#include "klee/util/ExprPPrinter.h"
#include "klee/Internal/Support/QueryLog.h"
#include "klee/Internal/System/Time.h"
#include "llvm/Support/CommandLine.h"
#include <fstream>
using namespace klee;
using namespace llvm;
using namespace klee::util;
///
class PCLoggingSolver : public SolverImpl {
Solver *solver;
std::ofstream os;
ExprPPrinter *printer;
unsigned queryCount;
double startTime;
void startQuery(const Query& query, const char *typeName,
const ref<Expr> *evalExprsBegin = 0,
const ref<Expr> *evalExprsEnd = 0,
const Array * const* evalArraysBegin = 0,
const Array * const* evalArraysEnd = 0) {
Statistic *S = theStatisticManager->getStatisticByName("Instructions");
uint64_t instructions = S ? S->getValue() : 0;
os << "# Query " << queryCount++ << " -- "
<< "Type: " << typeName << ", "
<< "Instructions: " << instructions << "\n";
printer->printQuery(os, query.constraints, query.expr,
evalExprsBegin, evalExprsEnd,
evalArraysBegin, evalArraysEnd);
startTime = getWallTime();
}
void finishQuery(bool success) {
double delta = getWallTime() - startTime;
os << "# " << (success ? "OK" : "FAIL") << " -- "
<< "Elapsed: " << delta << "\n";
}
public:
PCLoggingSolver(Solver *_solver, std::string path)
: solver(_solver),
os(path.c_str(), std::ios::trunc),
printer(ExprPPrinter::create(os)),
queryCount(0) {
}
~PCLoggingSolver() {
delete printer;
delete solver;
}
bool computeTruth(const Query& query, bool &isValid) {
startQuery(query, "Truth");
bool success = solver->impl->computeTruth(query, isValid);
finishQuery(success);
if (success)
os << "# Is Valid: " << (isValid ? "true" : "false") << "\n";
os << "\n";
return success;
}
bool computeValidity(const Query& query, Solver::Validity &result) {
startQuery(query, "Validity");
bool success = solver->impl->computeValidity(query, result);
finishQuery(success);
if (success)
os << "# Validity: " << result << "\n";
os << "\n";
return success;
}
bool computeValue(const Query& query, ref<Expr> &result) {
startQuery(query.withFalse(), "Value",
&query.expr, &query.expr + 1);
bool success = solver->impl->computeValue(query, result);
finishQuery(success);
if (success)
os << "# Result: " << result << "\n";
os << "\n";
return success;
}
bool computeInitialValues(const Query& query,
const std::vector<const Array*> &objects,
std::vector< std::vector<unsigned char> > &values,
bool &hasSolution) {
const ref<Expr> *evalExprBegin = 0, *evalExprEnd = 0;
if (!query.expr->isFalse()) {
evalExprBegin = &query.expr;
evalExprEnd = evalExprBegin + 1;
}
if (objects.empty()) {
startQuery(query.withFalse(), "InitialValues",
evalExprBegin, evalExprEnd);
} else {
startQuery(query.withFalse(), "InitialValues",
evalExprBegin, evalExprEnd,
&objects[0], &objects[0] + objects.size());
}
bool success = solver->impl->computeInitialValues(query, objects,
values, hasSolution);
finishQuery(success);
if (success) {
os << "# 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;
os << "# " << array->name << " = [";
for (unsigned j = 0; j < array->size; j++) {
os << (int) data[j];
if (j+1 < array->size)
os << ",";
}
os << "]\n";
}
}
}
os << "\n";
return success;
}
};
///
Solver *klee::createPCLoggingSolver(Solver *_solver, std::string path) {
return new Solver(new PCLoggingSolver(_solver, path));
}
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