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/*
* ezSAT -- A simple and easy to use CNF generator for SAT solvers
*
* Copyright (C) 2013 Clifford Wolf <clifford@clifford.at>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
*/
#ifndef EZMINISAT_H
#define EZMINISAT_H
#define EZMINISAT_SIMPSOLVER 1
#define EZMINISAT_VERBOSITY 0
#define EZMINISAT_INCREMENTAL 1
#include "ezsat.h"
#include <time.h>
// minisat is using limit macros and format macros in their headers that
// can be the source of some troubles when used from c++11. therefore we
// don't force ezSAT users to use minisat headers..
namespace Minisat {
class Solver;
class SimpSolver;
}
class ezMiniSAT : public ezSAT
{
private:
#if EZMINISAT_SIMPSOLVER
typedef Minisat::SimpSolver Solver;
#else
typedef Minisat::Solver Solver;
#endif
Solver *minisatSolver;
std::vector<int> minisatVars;
bool foundContradiction;
#if EZMINISAT_SIMPSOLVER && EZMINISAT_INCREMENTAL
std::set<int> cnfFrozenVars;
#endif
#ifndef _WIN32
static ezMiniSAT *alarmHandlerThis;
static clock_t alarmHandlerTimeout;
static void alarmHandler(int);
#endif
public:
ezMiniSAT();
virtual ~ezMiniSAT();
virtual void clear();
#if EZMINISAT_SIMPSOLVER && EZMINISAT_INCREMENTAL
virtual void freeze(int id);
virtual bool eliminated(int idx);
#endif
virtual bool solver(const std::vector<int> &modelExpressions, std::vector<bool> &modelValues, const std::vector<int> &assumptions);
};
#endif
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