org.sat4j.pb.core
Class PBSolver

java.lang.Object
  org.sat4j.minisat.core.Solver<PBDataStructureFactory>
      org.sat4j.pb.core.PBSolver

All Implemented Interfaces:

Serializable, Learner, UnitPropagationListener, IPBSolver, IProblem, ISolver

Direct Known Subclasses:

PBSolverCP, PBSolverResolution

public abstract class PBSolver
extends Solver<PBDataStructureFactory>
implements IPBSolver

See Also:

Serialized Form

Field Summary

protected PBSolverStats

stats

Fields inherited from class org.sat4j.minisat.core.Solver

analyzer, dsfactory, EXPENSIVE_SIMPLIFICATION, glucose, memory_based, NO_SIMPLIFICATION, rootLevel, SIMPLE_SIMPLIFICATION, trail, trailLim, voc

Constructor Summary

PBSolver(AssertingClauseGenerator acg, LearningStrategy<PBDataStructureFactory> learner, PBDataStructureFactory dsf, IOrder order, RestartStrategy restarter)

PBSolver(AssertingClauseGenerator acg, LearningStrategy<PBDataStructureFactory> learner, PBDataStructureFactory dsf, SearchParams params, IOrder order, RestartStrategy restarter)

Method Summary

IConstr	addPseudoBoolean(IVecInt literals, IVec<BigInteger> coeffs, boolean moreThan, BigInteger degree) Create a Pseudo-Boolean constraint of the type "at least n of those literals must be satisfied"
ObjectiveFunction	getObjectiveFunction()
void	setObjectiveFunction(ObjectiveFunction obj)

Methods inherited from class org.sat4j.minisat.core.Solver

addAllClauses, addAtLeast, addAtMost, addBlockingClause, addClause, addConstr, analyze, analyzeAtRootLevel, analyzeFinalConflictInTermsOfAssumptions, assume, cancelUntil, claBumpActivity, clearLearntClauses, decayActivities, decisionLevel, dimacs2internal, enqueue, enqueue, expireTimeout, findModel, findModel, getDSFactory, getIthConstr, getLogPrefix, getOrder, getOutLearnt, getSearchListener, getStat, getStats, getTimeout, getTimeoutMs, getVocabulary, initStats, isDBSimplificationAllowed, isSatisfiable, isSatisfiable, isSatisfiable, isSatisfiable, isVerbose, learn, model, model, nAssigns, nConstraints, newVar, newVar, nextFreeVarId, nVars, printInfos, printLearntClausesInfos, printStat, printStat, propagate, reduceDB, removeConstr, removeSubsumedConstr, reset, setDataStructureFactory, setDBSimplificationAllowed, setExpectedNumberOfClauses, setLearnedConstraintsDeletionStrategy, setLearner, setLogPrefix, setOrder, setRestartStrategy, setSearchListener, setSearchParams, setSimplifier, setSimplifier, setTimeout, setTimeoutMs, setTimeoutOnConflicts, setVerbose, simplifyDB, toString, toString, undoOne, unsatExplanation, unset, varBumpActivity

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.sat4j.specs.ISolver

addAllClauses, addAtLeast, addAtMost, addBlockingClause, addClause, clearLearntClauses, expireTimeout, getLogPrefix, getSearchListener, getStat, getTimeout, getTimeoutMs, isDBSimplificationAllowed, isVerbose, newVar, newVar, nextFreeVarId, printStat, printStat, removeConstr, removeSubsumedConstr, reset, setDBSimplificationAllowed, setExpectedNumberOfClauses, setLogPrefix, setSearchListener, setTimeout, setTimeoutMs, setTimeoutOnConflicts, setVerbose, toString, unsatExplanation

Methods inherited from interface org.sat4j.specs.IProblem

findModel, findModel, isSatisfiable, isSatisfiable, isSatisfiable, isSatisfiable, model, model, nConstraints, nVars, printInfos

Field Detail

stats

protected PBSolverStats stats

Constructor Detail

PBSolver

public PBSolver(AssertingClauseGenerator acg,
                LearningStrategy<PBDataStructureFactory> learner,
                PBDataStructureFactory dsf,
                IOrder order,
                RestartStrategy restarter)

PBSolver

public PBSolver(AssertingClauseGenerator acg,
                LearningStrategy<PBDataStructureFactory> learner,
                PBDataStructureFactory dsf,
                SearchParams params,
                IOrder order,
                RestartStrategy restarter)

Method Detail

addPseudoBoolean

public IConstr addPseudoBoolean(IVecInt literals,
                                IVec<BigInteger> coeffs,
                                boolean moreThan,
                                BigInteger degree)
                         throws ContradictionException

Description copied from interface: IPBSolver

Create a Pseudo-Boolean constraint of the type "at least n of those literals must be satisfied"

Specified by:

addPseudoBoolean in interface IPBSolver

Parameters:

literals - a set of literals. The vector can be reused since the solver is not supposed to keep a reference to that vector.

coeffs - the coefficients of the literals. The vector can be reused since the solver is not supposed to keep a reference to that vector.

moreThan - true if it is a constraint >= degree

degree - the degree of the cardinality constraint

Returns:

a reference to the constraint added in the solver, to use in removeConstr().

Throws:

ContradictionException - iff the vector of literals is empty or if the constraint is falsified after unit propagation

See Also:

ISolver.removeConstr(IConstr)

setObjectiveFunction

public void setObjectiveFunction(ObjectiveFunction obj)

Specified by:

setObjectiveFunction in interface IPBSolver

getObjectiveFunction

public ObjectiveFunction getObjectiveFunction()

Specified by:

getObjectiveFunction in interface IPBSolver