com.microsoft.z3

Class Optimize

java.lang.Object

com.microsoft.z3.IDisposable

com.microsoft.z3.Z3Object

com.microsoft.z3.Optimize

public class Optimize
extends Z3Object

Object for managing optimizization context

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	Optimize.Handle Handle to objectives returned by objective functions.

Method Summary

Methods

Modifier and Type	Method and Description
void	Add(BoolExpr... constraints) Alias for Assert.
void	Assert(BoolExpr... constraints) Assert a constraint (or multiple) into the optimize solver.
Optimize.Handle	AssertSoft(BoolExpr constraint, int weight, java.lang.String group) Assert soft constraint Return an objective which associates with the group of constraints.
Status	Check() Check satisfiability of asserted constraints.
java.lang.String	getHelp() A string that describes all available optimize solver parameters.
Model	getModel() The model of the last Check.
ParamDescrs	getParameterDescriptions() Retrieves parameter descriptions for Optimize solver.
java.lang.String	getReasonUnknown() Return a string the describes why the last to check returned unknown
Statistics	getStatistics() Optimize statistics.
Optimize.Handle	MkMaximize(ArithExpr e) Declare an arithmetical maximization objective.
Optimize.Handle	MkMinimize(ArithExpr e) Declare an arithmetical minimization objective.
void	Pop() Backtrack one backtracking point.
void	Push() Creates a backtracking point.
void	setParameters(Params value) Sets the optimize solver parameters.
java.lang.String	toString() Print the context to a String (SMT-LIB parseable benchmark).

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

getHelp

public java.lang.String getHelp()

A string that describes all available optimize solver parameters.

setParameters

public void setParameters(Params value)

Sets the optimize solver parameters.

Throws:

Z3Exception

getParameterDescriptions

public ParamDescrs getParameterDescriptions()

Retrieves parameter descriptions for Optimize solver.

Assert

public void Assert(BoolExpr... constraints)

Assert a constraint (or multiple) into the optimize solver.

Add

public void Add(BoolExpr... constraints)

Alias for Assert.

AssertSoft

public Optimize.Handle AssertSoft(BoolExpr constraint,
                         int weight,
                         java.lang.String group)

Assert soft constraint Return an objective which associates with the group of constraints.

Check

public Status Check()

Check satisfiability of asserted constraints. Produce a model that (when the objectives are bounded and don't use strict inequalities) meets the objectives.

Push

public void Push()

Creates a backtracking point.

Pop

public void Pop()

Backtrack one backtracking point. Note that an exception is thrown if Pop is called without a corresponding Push.

getModel

public Model getModel()

The model of the last Check. The result is null if Check was not invoked before, if its results was not SATISFIABLE, or if model production is not enabled.

MkMaximize

public Optimize.Handle MkMaximize(ArithExpr e)

Declare an arithmetical maximization objective. Return a handle to the objective. The handle is used as to retrieve the values of objectives after calling Check.

MkMinimize

public Optimize.Handle MkMinimize(ArithExpr e)

Declare an arithmetical minimization objective. Similar to MkMaximize.

getReasonUnknown

public java.lang.String getReasonUnknown()

Return a string the describes why the last to check returned unknown

toString

public java.lang.String toString()

Print the context to a String (SMT-LIB parseable benchmark).

Overrides:

toString in class java.lang.Object

getStatistics

public Statistics getStatistics()

Optimize statistics.