lib/Sat/SimplifyingMinisat.cpp

/********************************************************************
 *
 * BEGIN DATE: 2010
 *
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#define __STDC_FORMAT_MACROS
#define MINISAT_CONSTANTS_AS_MACROS
#include "stp/Sat/SimplifyingMinisat.h"
#include "minisat/simp/SimpSolver.h"

namespace MiniSat
{
}
using namespace MiniSat;

namespace stp
{
using std::cout;

SimplifyingMinisat::SimplifyingMinisat()
{
  s = new Minisat::SimpSolver();
}

SimplifyingMinisat::~SimplifyingMinisat()
{
  delete s;
}

void SimplifyingMinisat::setMaxConflicts(int64_t max_confl)
{
  if (max_confl > 0)
    s->setConfBudget(max_confl);
}

bool SimplifyingMinisat::addClause(
    const vec_literals& ps) // Add a clause to the solver.
{
  return s->addClause(ps);
}

bool SimplifyingMinisat::okay()
    const // FALSE means solver is in a conflicting state
{
  return s->okay();
}

bool SimplifyingMinisat::solve(
    bool& timeout_expired) // Search without assumptions.
{
  if (!s->simplify())
    return false;

  Minisat::vec<Minisat::Lit> assumps;
  Minisat::lbool ret = s->solveLimited(assumps);
  if (ret == (Minisat::lbool)l_Undef)
  {
    timeout_expired = true;
  }

  return s->okay();
}

bool SimplifyingMinisat::simplify() // Removes already satisfied clauses.
{
  return s->simplify();
}

uint8_t SimplifyingMinisat::modelValue(uint32_t x) const
{
  return Minisat::toInt(s->modelValue(x));
}

void SimplifyingMinisat::setVerbosity(int v)
{
  s->verbosity = v;
}

uint32_t SimplifyingMinisat::newVar()
{
  return s->newVar();
}

unsigned long SimplifyingMinisat::nVars() const
{
  return s->nVars();
}

void SimplifyingMinisat::printStats() const
{
  //s->printStats();
}

void SimplifyingMinisat::setFrozen(uint32_t x)
{
  s->setFrozen(x, true);
}
}