Added tests to narrow down bug #339. So far no luck, but we did stumb…

…le upon bug #310 for CVC5.

src/org/sosy_lab/java_smt/test/SolverThreadLocalTest.java

@@ -0,0 +1,155 @@
+/*
+ *  JavaSMT is an API wrapper for a collection of SMT solvers.
+ *  This file is part of JavaSMT.
+ *
+ *  Copyright (C) 2007-2016  Dirk Beyer
+ *  All rights reserved.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+package org.sosy_lab.java_smt.test;
+
+import static com.google.common.truth.TruthJUnit.assume;
+import static org.sosy_lab.java_smt.test.ProverEnvironmentSubject.assertThat;
+
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.Future;
+import org.junit.Test;
+import org.sosy_lab.common.ShutdownManager;
+import org.sosy_lab.common.ShutdownNotifier;
+import org.sosy_lab.common.configuration.Configuration;
+import org.sosy_lab.common.configuration.InvalidConfigurationException;
+import org.sosy_lab.common.log.LogManager;
+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.IntegerFormulaManager;
+import org.sosy_lab.java_smt.api.SolverContext;
+import org.sosy_lab.java_smt.api.SolverException;
+
+public class SolverThreadLocalTest extends SolverBasedTest0.ParameterizedSolverBasedTest0 {
+  @Test
+  public void allLocalTest() throws InterruptedException, SolverException {
+    requireIntegers();
+
+    HardIntegerFormulaGenerator gen = new HardIntegerFormulaGenerator(imgr, bmgr);
+    BooleanFormula formula = gen.generate(8);
+
+    try (BasicProverEnvironment<?> prover = context.newProverEnvironment()) {
+      prover.push(formula);
+      assertThat(prover).isUnsatisfiable();
+    }
+  }
+
+  @Test public void nonlocalContext() throws ExecutionException, InterruptedException,
+                                             SolverException {
+    requireIntegers();
+
+    /* FIXME: Exception for CVC5 (related to #310?)
+    io.github.cvc5.CVC5ApiException:
+      Invalid call to 'cvc5::SortKind cvc5::Sort::getKind() const', expected non-null object
+    */
+    assume().that(solverToUse()).isNotEqualTo(Solvers.CVC5);
+
+    ExecutorService executor = Executors.newSingleThreadExecutor();
+    Future<SolverContext> result = executor.submit(() -> {
+      try {
+        Configuration config = Configuration.builder()
+            .setOption("solver.solver", solverToUse().toString())
+            .build();
+      } catch (InvalidConfigurationException e) {
+        throw new RuntimeException(e);
+      }
+      LogManager logger = LogManager.createTestLogManager();
+      ShutdownNotifier shutdownNotifier = ShutdownManager.create().getNotifier();
+
+      SolverContextFactory factory = new SolverContextFactory(config, logger, shutdownNotifier);
+      return factory.generateContext();
+    });
+
+    executor.shutdownNow();
+
+    SolverContext context = result.get();
+    FormulaManager mgr = context.getFormulaManager();
+
+    BooleanFormulaManager bmgr = mgr.getBooleanFormulaManager();
+    IntegerFormulaManager imgr = mgr.getIntegerFormulaManager();
+
+    HardIntegerFormulaGenerator gen = new HardIntegerFormulaGenerator(imgr, bmgr);
+    BooleanFormula formula = gen.generate(8); // CVC5 throws an exception here
+
+    try (BasicProverEnvironment<?> prover = context.newProverEnvironment()) {
+      prover.push(formula);
+      assertThat(prover).isUnsatisfiable();
+    }
+  }
+
+  @Test
+  public void nonlocalFormulaTest() throws InterruptedException, SolverException,
+                                           ExecutionException {
+    requireIntegers();
+
+    /* FIXME: Exception for CVC5 (related to #310?)
+    Invalid call to 'cvc5::SortKind cvc5::Sort::getKind() const', expected non-null object
+    */
+    assume().that(solverToUse()).isNotEqualTo(Solvers.CVC5);
+
+    ExecutorService executor = Executors.newSingleThreadExecutor();
+    Future<BooleanFormula> result = executor.submit(() -> {
+      HardIntegerFormulaGenerator gen = new HardIntegerFormulaGenerator(imgr, bmgr);
+      return gen.generate(8);
+    });
+
+    BooleanFormula formula = result.get();
+    executor.shutdownNow();
+
+    try (BasicProverEnvironment<?> prover = context.newProverEnvironment()) {
+      prover.push(formula);
+      assertThat(prover).isUnsatisfiable();
+    }
+  }
+
+  @Test
+  public void nonlocalProverTest() throws InterruptedException, ExecutionException {
+    requireIntegers();
+
+    /* FIXME: Exception for CVC5
+    io.github.cvc5.CVC5ApiException:
+      Given term is not associated with the node manager of this solver
+     */
+    assume().that(solverToUse()).isNotEqualTo(Solvers.CVC5);
+
+    HardIntegerFormulaGenerator gen = new HardIntegerFormulaGenerator(imgr, bmgr);
+    BooleanFormula formula = gen.generate(8);
+
+    ExecutorService executor = Executors.newSingleThreadExecutor();
+    Future<Boolean> result = executor.submit(
+        () -> {
+          try (BasicProverEnvironment<?> prover = context.newProverEnvironment()) {
+            prover.push(formula); // CVC5 throws an exception here
+            return prover.isUnsat();
+          }
+        });
+
+    Boolean isUnsat = result.get();
+    executor.shutdownNow();
+
+    assert(isUnsat).equals(true);
+  }
+}