com.microsoft.z3

Class Goal

java.lang.Object

com.microsoft.z3.IDisposable

com.microsoft.z3.Z3Object

com.microsoft.z3.Goal

public class Goal
extends Z3Object

A goal (aka problem). A goal is essentially a set of formulas, that can be solved and/or transformed using tactics and solvers.

Method Summary

Methods

Modifier and Type	Method and Description
void	add(BoolExpr... constraints) Adds the constraints to the given goal.
BoolExpr	AsBoolExpr() Goal to BoolExpr conversion.
int	getDepth() The depth of the goal.
BoolExpr[]	getFormulas() The formulas in the goal.
int	getNumExprs() The number of formulas, subformulas and terms in the goal.
Z3_goal_prec	getPrecision() The precision of the goal.
boolean	inconsistent() Indicates whether the goal contains `false'.
boolean	isDecidedSat() Indicates whether the goal is empty, and it is precise or the product of an under approximation.
boolean	isDecidedUnsat() Indicates whether the goal contains `false', and it is precise or the product of an over approximation.
boolean	isGarbage() Indicates whether the goal is garbage (i.e., the product of over- and under-approximations).
boolean	isOverApproximation() Indicates whether the goal is an over-approximation.
boolean	isPrecise() Indicates whether the goal is precise.
boolean	isUnderApproximation() Indicates whether the goal is an under-approximation.
void	reset() Erases all formulas from the given goal.
Goal	simplify() Simplifies the goal.
Goal	simplify(Params p) Simplifies the goal.
int	size() The number of formulas in the goal.
java.lang.String	toString() Goal to string conversion.
Goal	translate(Context ctx) Translates (copies) the Goal to the target Context ctx.

Methods inherited from class com.microsoft.z3.Z3Object

dispose, finalize

Methods inherited from class java.lang.Object

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

Method Detail

getPrecision

public Z3_goal_prec getPrecision()

The precision of the goal. Remarks: Goals can be transformed using over and under approximations. An under approximation is applied when the objective is to find a model for a given goal. An over approximation is applied when the objective is to find a proof for a given goal.

isPrecise

public boolean isPrecise()

Indicates whether the goal is precise.

isUnderApproximation

public boolean isUnderApproximation()

Indicates whether the goal is an under-approximation.

isOverApproximation

public boolean isOverApproximation()

Indicates whether the goal is an over-approximation.

isGarbage

public boolean isGarbage()

Indicates whether the goal is garbage (i.e., the product of over- and under-approximations).

add

public void add(BoolExpr... constraints)

Adds the constraints to the given goal.

Throws:

Z3Exception

inconsistent

public boolean inconsistent()

Indicates whether the goal contains `false'.

getDepth

public int getDepth()

The depth of the goal. Remarks: This tracks how many transformations were applied to it.

reset

public void reset()

Erases all formulas from the given goal.

size

public int size()

The number of formulas in the goal.

getFormulas

public BoolExpr[] getFormulas()

The formulas in the goal.

Throws:

Z3Exception

getNumExprs

public int getNumExprs()

The number of formulas, subformulas and terms in the goal.

isDecidedSat

public boolean isDecidedSat()

Indicates whether the goal is empty, and it is precise or the product of an under approximation.

isDecidedUnsat

public boolean isDecidedUnsat()

Indicates whether the goal contains `false', and it is precise or the product of an over approximation.

translate

public Goal translate(Context ctx)

Translates (copies) the Goal to the target Context ctx.

Throws:

Z3Exception

simplify

public Goal simplify()

Simplifies the goal. Remarks: Essentially invokes the `simplify' tactic on the goal.

simplify

public Goal simplify(Params p)

Simplifies the goal. Remarks: Essentially invokes the `simplify' tactic on the goal.

toString

public java.lang.String toString()

Goal to string conversion.

Overrides:

toString in class java.lang.Object

Returns:

A string representation of the Goal.

AsBoolExpr

public BoolExpr AsBoolExpr()

Goal to BoolExpr conversion. Returns a string representation of the Goal.