Package org.sosy_lab.java_smt.basicimpl

Class AbstractModel<TFormulaInfo,TType,TEnv>

java.lang.Object

org.sosy_lab.java_smt.basicimpl.AbstractModel<TFormulaInfo,TType,TEnv>

All Implemented Interfaces:

AutoCloseable, Iterable<Model.ValueAssignment>, Model

Direct Known Subclasses:

AbstractModel.CachingAbstractModel

public abstract class AbstractModel<TFormulaInfo,TType,TEnv>
extends Object
implements Model

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	AbstractModel.CachingAbstractModel<TFormulaInfo,TType,TEnv>

Nested classes/interfaces inherited from interface org.sosy_lab.java_smt.api.Model

Model.ValueAssignment

Field Summary

Fields

Modifier and Type	Field	Description
protected FormulaCreator<TFormulaInfo,TType,TEnv,?>	creator

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AbstractModel(FormulaCreator<TFormulaInfo,TType,TEnv,?> creator)

Method Summary

Modifier and Type	Method	Description
<T extends Formula> @Nullable T	eval(T f)	Evaluate a given formula substituting the values from the model and return it as formula.
protected abstract @Nullable TFormulaInfo	evalImpl(TFormulaInfo formula)	Simplify the given formula and replace all symbols with their model values.
@Nullable BigInteger	evaluate(BitvectorFormula f)	Type-safe evaluation for bitvector formulas.
@Nullable Boolean	evaluate(BooleanFormula f)	Type-safe evaluation for boolean formulas.
@Nullable Object	evaluate(Formula f)	Evaluate a given formula substituting the values from the model.
@Nullable BigInteger	evaluate(NumeralFormula.IntegerFormula f)	Type-safe evaluation for integer formulas.
@Nullable Rational	evaluate(NumeralFormula.RationalFormula f)	Type-safe evaluation for rational formulas.
@Nullable String	evaluate(StringFormula f)	Type-safe evaluation for string formulas.
protected @Nullable Object	evaluateImpl(TFormulaInfo f)	Simplify the given formula and replace all symbols with their model values.
String	toString()	Pretty-printing of the model values.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Methods inherited from interface org.sosy_lab.java_smt.api.Model

asList, close, iterator

Field Detail

creator

protected final FormulaCreator<TFormulaInfo,TType,TEnv,?> creator

Constructor Detail

AbstractModel

protected AbstractModel(FormulaCreator<TFormulaInfo,TType,TEnv,?> creator)

Method Detail

eval

public <T extends Formula> @Nullable T eval(T f)

Description copied from interface: Model

Evaluate a given formula substituting the values from the model and return it as formula.

If a value is not relevant to the satisfiability result, the solver can choose either to insert an arbitrary value (e.g., the value 0 for the matching type) or just return null.

The formula does not need to be a variable, we also allow complex expression. The solver will replace all symbols from the formula with their model values and then simplify the formula into a simple formula, e.g., consisting only of a numeral expression.

Specified by:

eval in interface Model

Parameters:

f - Input formula to be evaluated.

Returns:

evaluation of the given formula or null if the solver does not provide a better evaluation.

evaluate

public @Nullable BigInteger evaluate(NumeralFormula.IntegerFormula f)

Description copied from interface: Model

Type-safe evaluation for integer formulas.

The formula does not need to be a variable, we also allow complex expression.

Specified by:

evaluate in interface Model

evaluate

public @Nullable Rational evaluate(NumeralFormula.RationalFormula f)

Description copied from interface: Model

Type-safe evaluation for rational formulas.

The formula does not need to be a variable, we also allow complex expression.

Specified by:

evaluate in interface Model

evaluate

public @Nullable Boolean evaluate(BooleanFormula f)

Description copied from interface: Model

Type-safe evaluation for boolean formulas.

The formula does not need to be a variable, we also allow complex expression.

Specified by:

evaluate in interface Model

evaluate

public @Nullable String evaluate(StringFormula f)

Description copied from interface: Model

Type-safe evaluation for string formulas.

The formula does not need to be a variable, we also allow complex expression.

Specified by:

evaluate in interface Model

evaluate

public @Nullable BigInteger evaluate(BitvectorFormula f)

Description copied from interface: Model

Type-safe evaluation for bitvector formulas.

The formula does not need to be a variable, we also allow complex expression.

Specified by:

evaluate in interface Model

evaluate

public final @Nullable Object evaluate(Formula f)

Description copied from interface: Model

Evaluate a given formula substituting the values from the model.

If a value is not relevant to the satisfiability result, the model can choose either an arbitrary value (e.g., the value 0 for the matching type) or just return null.

The formula does not need to be a variable, we also allow complex expression.

Specified by:

evaluate in interface Model

Parameters:

f - Input formula

Returns:

Either of: - Number (Rational/Double/BigInteger/Long/Integer) - Boolean

evalImpl

protected abstract @Nullable TFormulaInfo evalImpl(TFormulaInfo formula)

Simplify the given formula and replace all symbols with their model values. If a symbol is not set in the model and evaluation aborts, return null.

evaluateImpl

protected @Nullable Object evaluateImpl(TFormulaInfo f)

Simplify the given formula and replace all symbols with their model values. If a symbol is not set in the model and evaluation aborts, return null. Afterwards convert the formula into a Java object as far as possible, i.e., try to match a primitive or simple type.

toString

public String toString()

Description copied from interface: Model

Pretty-printing of the model values.

Please only use this method for debugging and not for retrieving relevant information about the model. The returned model representation is not intended for further usage like parsing, because we do not guarantee any specific format, e.g., for arrays and uninterpreted functions, and we allow the SMT solver to include arbitrary additional information about the current solver state, e.g., any available symbol in the solver, even from other provers, and temporary internal symbols.

Specified by:

toString in interface Model

Overrides:

toString in class Object