org.sat4j.pb
Interface IPBSolver

All Superinterfaces:

IProblem, ISolver, Serializable

All Known Implementing Classes:

OPBStringSolver, OptToPBSATAdapter, PBSolver, PBSolverCautious, PBSolverClause, PBSolverCP, PBSolverDecorator, PBSolverMerging, PBSolverResCP, PBSolverResolution, PBSolverWithImpliedClause, PseudoIteratorDecorator, PseudoOptDecorator, UserFriendlyPBStringSolver, XplainPB

public interface IPBSolver
extends ISolver

A solver able to deal with pseudo boolean constraints.

Author:

daniel

Method Summary

IConstr	addPseudoBoolean(IVecInt lits, IVec<BigInteger> coeffs, boolean moreThan, BigInteger d) 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 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

Method Detail

addPseudoBoolean

IConstr addPseudoBoolean(IVecInt lits,
                         IVec<BigInteger> coeffs,
                         boolean moreThan,
                         BigInteger d)
                         throws ContradictionException

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

Parameters:

lits - 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

d - 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

void setObjectiveFunction(ObjectiveFunction obj)

getObjectiveFunction

ObjectiveFunction getObjectiveFunction()