java-smt/src/org/sosy_lab/java_smt/test/DebugModeTest.java at master · sosy-lab/java-smt · GitHub

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// This file is part of JavaSMT,

// an API wrapper for a collection of SMT solvers:

// https://github.com/sosy-lab/java-smt

// SPDX-FileCopyrightText: 2023 Dirk Beyer <https://www.sosy-lab.org>

// SPDX-License-Identifier: Apache-2.0

package org.sosy_lab.java_smt.test;

import static org.junit.Assert.assertThrows;

import static org.sosy_lab.java_smt.test.ProverEnvironmentSubject.assertThat;

import com.google.common.base.Throwables;

import com.google.common.collect.ImmutableList;

import java.util.List;

import java.util.concurrent.ExecutionException;

import java.util.concurrent.ExecutorService;

import java.util.concurrent.Executors;

import java.util.concurrent.Future;

import org.junit.After;

import org.junit.Before;

import org.junit.Test;

import org.sosy_lab.common.configuration.Configuration;

import org.sosy_lab.common.configuration.InvalidConfigurationException;

import org.sosy_lab.java_smt.SolverContextFactory;

import org.sosy_lab.java_smt.SolverContextFactory.Solvers;

import org.sosy_lab.java_smt.api.BasicProverEnvironment;

import org.sosy_lab.java_smt.api.BooleanFormula;

import org.sosy_lab.java_smt.api.BooleanFormulaManager;

import org.sosy_lab.java_smt.api.FormulaManager;

import org.sosy_lab.java_smt.api.FormulaType;

import org.sosy_lab.java_smt.api.FunctionDeclaration;

import org.sosy_lab.java_smt.api.IntegerFormulaManager;

import org.sosy_lab.java_smt.api.NumeralFormula.IntegerFormula;

import org.sosy_lab.java_smt.api.SolverContext;

import org.sosy_lab.java_smt.api.SolverException;

import org.sosy_lab.java_smt.api.UFManager;

public class DebugModeTest extends SolverBasedTest0.ParameterizedSolverBasedTest0 {

private SolverContextFactory debugFactory;

private SolverContext debugContext;

private UFManager debugFmgr;

private BooleanFormulaManager debugBmgr;

private IntegerFormulaManager debugImgr;

private static final int DEFAULT_PROBLEM_SIZE = 8;

@Before

public void init() throws InvalidConfigurationException {

Configuration debugConfig =

Configuration.builder()

.setOption("solver.solver", solverToUse().toString())

.setOption("solver.useDebugMode", String.valueOf(true))

.build();

debugFactory = new SolverContextFactory(debugConfig, logger, shutdownNotifierToUse());

debugContext = debugFactory.generateContext();

FormulaManager debugMgr = debugContext.getFormulaManager();

try {

debugFmgr = debugMgr.getUFManager();

debugBmgr = debugMgr.getBooleanFormulaManager();

debugImgr = debugMgr.getIntegerFormulaManager();

} catch (UnsupportedOperationException e) {

// Boolector does not support integer theory. We just leave debugImgr set to null.

}

@After

public void cleanup() {

if (debugContext != null) {

debugContext.close();

}

/**

* Helper method for threadLocalTest(). Will rethrow any exception that occurred on the other

* thread.

private void checkForExceptions(Future<?> task) {

try {

// Accessing the future will rethrow the exception on the main thread

assert task.get() == null;

} catch (ExecutionException e) {

Throwables.throwIfInstanceOf(e.getCause(), IllegalStateException.class);

Throwables.throwIfUnchecked(e.getCause());

} catch (InterruptedException e) {

Thread.currentThread().interrupt();

}

/** Try to use the context from a different thread. */

@SuppressWarnings("resource")

@Test

public void nonLocalThreadTest() {

requireVisitor();

ExecutorService exec = Executors.newSingleThreadExecutor();

Future<?> result =

exec.submit(

() -> {

// Generate a non-trivial problem for our tests

BooleanFormula varA = debugBmgr.makeVariable("a");

BooleanFormula formula = debugBmgr.and(varA, debugBmgr.not(varA));

try (BasicProverEnvironment<?> prover = debugContext.newProverEnvironment()) {

prover.push(formula);

assertThat(prover).isUnsatisfiable();

}

return null;

});

// We expect debug mode to throw an exception only on CVC5

if (solverToUse() == Solvers.CVC5) {

assertThrows(IllegalStateException.class, () -> checkForExceptions(result));

} else {

checkForExceptions(result);

}

exec.shutdownNow();

}

/**

* Helper method for noSharedFormulasTest(). Will use the debug context to check the formula for

* satisfiability.

* @param pFormula This formula should come from a different context

private void checkFormulaInDebugContext(BooleanFormula pFormula)

throws InterruptedException, SolverException {

try (BasicProverEnvironment<?> prover = debugContext.newProverEnvironment()) {

prover.push(pFormula);

assertThat(prover).isUnsatisfiable();

}

/** Create a formula then try using it from a different context. */

@Test

public void noSharedFormulasTest()

throws InterruptedException, SolverException, InvalidConfigurationException {

requireIntegers();

requireVisitor();

try (SolverContext newContext = debugFactory.generateContext()) {

BooleanFormulaManager newBmgr = newContext.getFormulaManager().getBooleanFormulaManager();

IntegerFormulaManager newImgr = newContext.getFormulaManager().getIntegerFormulaManager();

HardIntegerFormulaGenerator hardProblem = new HardIntegerFormulaGenerator(newImgr, newBmgr);

BooleanFormula formula = hardProblem.generate(DEFAULT_PROBLEM_SIZE);

// We expect debug mode to throw an exception for all solvers, except CVC4, CVC5 and Yices

if (!ImmutableList.of(Solvers.CVC4, Solvers.YICES2).contains(solverToUse())) {

assertThrows(IllegalArgumentException.class, () -> checkFormulaInDebugContext(formula));

} else {

checkFormulaInDebugContext(formula);

}

/**

* Helper method for noSharedDeclarationsTest(). Uses the function declaration in debug context.

* @param pDeclaration A function declaration from a different context.

@SuppressWarnings("ResultOfMethodCallIgnored")

public void checkDeclarationInDebugContext(FunctionDeclaration<IntegerFormula> pDeclaration) {

debugFmgr.callUF(pDeclaration, debugImgr.makeNumber(0));

}

/** Declare a function, then try calling it from a different context. */

@Test

public void noSharedDeclarationsTest() throws InvalidConfigurationException {

requireIntegers();

requireVisitor();

try (SolverContext newContext = debugFactory.generateContext()) {

UFManager newFmgr = newContext.getFormulaManager().getUFManager();

FunctionDeclaration<IntegerFormula> id =

newFmgr.declareUF(

"id", FormulaType.IntegerType, ImmutableList.of(FormulaType.IntegerType));

// We expect debug mode to throw an exception for all solvers, except Princess, CVC4 and Yices

if (!List.of(Solvers.PRINCESS, Solvers.YICES2).contains(solverToUse())) {

assertThrows(IllegalArgumentException.class, () -> checkDeclarationInDebugContext(id));

} else {

checkDeclarationInDebugContext(id);

}

/** Try to add a formula from a different solver to our solver context. */

@Test

public void noSharingBetweenSolversTest() throws InvalidConfigurationException {

Solvers otherSolver =

solverToUse() == Solvers.SMTINTERPOL ? Solvers.PRINCESS : Solvers.SMTINTERPOL;

try (SolverContext otherContext = debugFactory.generateContext(otherSolver)) {

BooleanFormulaManager otherBmgr = otherContext.getFormulaManager().getBooleanFormulaManager();

BooleanFormula formula = otherBmgr.makeFalse();

try (BasicProverEnvironment<?> prover = debugContext.newProverEnvironment()) {

assertThrows(IllegalArgumentException.class, () -> prover.push(formula));

}

java-smt/src/org/sosy_lab/java_smt/test/DebugModeTest.java at master · sosy-lab/java-smt · GitHub

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