org.sosy_lab.solver.cvc4

Class CVC4TheoremProver

java.lang.Object

org.sosy_lab.solver.cvc4.CVC4TheoremProver

All Implemented Interfaces:

AutoCloseable, BasicProverEnvironment<Void>, ProverEnvironment

public class CVC4TheoremProver
extends Object
implements BasicProverEnvironment<Void>, ProverEnvironment

Nested Class Summary

Nested classes/interfaces inherited from interface org.sosy_lab.solver.api.ProverEnvironment

ProverEnvironment.AllSatCallback<T>

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	CVC4TheoremProver(CVC4FormulaManager pMgr)

Method Summary

Modifier and Type	Method and Description
Void	addConstraint(BooleanFormula pF) Add constraint to the context.
<T> T	allSat(ProverEnvironment.AllSatCallback<T> pCallback, List<BooleanFormula> pImportant) Get all satisfying assignments of the current environment with regards to a subset of terms, and create a region representing all those models.
void	close() Closes the prover environment.
<E extends Formula> E	evaluate(E f) Evaluate the formula with the previously generated model.
Model	getModel() Get a satisfying assignment.
List<BooleanFormula>	getUnsatCore() Get an unsat core.
boolean	isUnsat() Check whether the conjunction of all formulas on the stack is unsatisfiable.
void	pop() Remove one formula from the environment stack.
void	push() Create backtracking point.
Void	push(BooleanFormula pF) Push a backtracking point and add a formula to the environment stack, asserting it.

Methods inherited from class java.lang.Object

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

Constructor Detail

CVC4TheoremProver

protected CVC4TheoremProver(CVC4FormulaManager pMgr)

Method Detail

push

public void push()

Description copied from interface: BasicProverEnvironment

Create backtracking point.

Specified by:

push in interface BasicProverEnvironment<Void>

push

public Void push(BooleanFormula pF)

Description copied from interface: BasicProverEnvironment

Push a backtracking point and add a formula to the environment stack, asserting it. The return value may be used to identify this formula later on in a query (this depends on the sub-type of the environment).

Specified by:

push in interface BasicProverEnvironment<Void>

addConstraint

@Nullable
public Void addConstraint(BooleanFormula pF)

Description copied from interface: BasicProverEnvironment

Add constraint to the context.

Specified by:

addConstraint in interface BasicProverEnvironment<Void>

pop

public void pop()

Description copied from interface: BasicProverEnvironment

Remove one formula from the environment stack.

Specified by:

pop in interface BasicProverEnvironment<Void>

isUnsat

public boolean isUnsat()
                throws InterruptedException,
                       SolverException

Description copied from interface: BasicProverEnvironment

Check whether the conjunction of all formulas on the stack is unsatisfiable.

Specified by:

isUnsat in interface BasicProverEnvironment<Void>

Throws:

InterruptedException

SolverException

getUnsatCore

public List<BooleanFormula> getUnsatCore()

Description copied from interface: ProverEnvironment

Get an unsat core. This should be called only immediately after an BasicProverEnvironment.isUnsat() call that returned false.

Specified by:

getUnsatCore in interface ProverEnvironment

getModel

public Model getModel()
               throws SolverException

Description copied from interface: BasicProverEnvironment

Get a satisfying assignment. This should be called only immediately after an BasicProverEnvironment.isUnsat() call that returned false.

Specified by:

getModel in interface BasicProverEnvironment<Void>

Throws:

SolverException

close

public void close()

Description copied from interface: BasicProverEnvironment

Closes the prover environment. The object should be discarded, and should not be used after closing.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface BasicProverEnvironment<Void>

evaluate

public <E extends Formula> E evaluate(E f)

Description copied from interface: BasicProverEnvironment

Evaluate the formula with the previously generated model. Assumes that model generation is enabled, and the previous call was BasicProverEnvironment.getModel(). // TODO: provide a default for non-Z3 solvers.

Specified by:

evaluate in interface BasicProverEnvironment<Void>

allSat

public <T> T allSat(ProverEnvironment.AllSatCallback<T> pCallback,
                    List<BooleanFormula> pImportant)
             throws InterruptedException,
                    SolverException

Description copied from interface: ProverEnvironment

Get all satisfying assignments of the current environment with regards to a subset of terms, and create a region representing all those models.

Specified by:

allSat in interface ProverEnvironment

pImportant - A set of variables appearing in f. Only these variables will appear in the region.

Returns:

A region representing all satisfying models of the formula.

Throws:

InterruptedException

SolverException