Concrete execution exceptions for Collection<Collection<Double>>

**Description**

NoSuchElementException and NullPointerException are thrown from concrete executions by symbolic engine of a method with Collection<Collection<Double>> as input.

**To Reproduce**

1. Install one of the latest plugin build from main on IntelliJ Idea 2022.1.4
2. Symbolic execution is on
3. Add the following method to a Java class:

```java
public static boolean isDiagonal(Collection<Collection<Double>> matrix) {
 int cols = matrix.size();
 if (cols <= 1) {
 return false;
 }
 int i = 0;
 for (Collection<Double> col : matrix) {
 if (col.size() != cols) {
 return false;
 }
 int j = 0;
 for (Double value : col) {
 if (i == j && value == 0.0) return false;
 if (i != j && value != 0.0) return false;
 j++;
 }
 i++;
 }
 return true;
 }

```
4. Generate tests with UTBot symbolic execution

**Expected behavior**

Tests are supposed to be generated.

**Actual behavior**

An error test is generated with information about errors in the concrete executor.

<details>
<summary>Exceptions in concrete execution logs</summary>

```java
18:18:25.437 ERROR| java.util.NoSuchElementException
	at java.base/java.util.Vector$Itr.next(Vector.java:1280)
	at java.base/java.util.AbstractList.hashCode(AbstractList.java:566)
	at java.base/java.util.Vector.hashCode(Vector.java:1106)
	at java.base/java.util.HashMap.hash(HashMap.java:340)
	at java.base/java.util.HashMap.put(HashMap.java:608)
	at java.base/java.util.HashSet.add(HashSet.java:220)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at org.utbot.common.KClassUtilKt.invokeCatching(KClassUtil.kt:10)
	at org.utbot.framework.concrete.MockValueConstructor$call$1.invoke(MockValueConstructor.kt:478)
	at org.utbot.framework.concrete.MockValueConstructor$call$1.invoke(MockValueConstructor.kt:477)
	at org.utbot.instrumentation.process.SecurityKt$runSandbox$1$1.invoke(Security.kt:38)
	at org.utbot.instrumentation.process.SecurityKt$sandbox$1.invoke(Security.kt:61)
	at org.utbot.instrumentation.process.SecurityKt$sandbox$2.invoke(Security.kt:77)
	at org.utbot.instrumentation.process.SecurityKt$sandbox$3.invoke(Security.kt:82)
	at org.utbot.instrumentation.process.SecurityKt$sandbox$4.run(Security.kt:88)
	at java.base/java.security.AccessController.doPrivileged(Native Method)
	at org.utbot.instrumentation.process.SecurityKt.sandbox(Security.kt:88)
	at org.utbot.instrumentation.process.SecurityKt.sandbox(Security.kt:82)
	at org.utbot.instrumentation.process.SecurityKt.sandbox(Security.kt:77)
	at org.utbot.instrumentation.process.SecurityKt.sandbox(Security.kt:61)
	at org.utbot.instrumentation.process.SecurityKt.runSandbox(Security.kt:38)
	at org.utbot.framework.concrete.MockValueConstructor.call(MockValueConstructor.kt:477)
	at org.utbot.framework.concrete.MockValueConstructor.updateWithExecutableCallModel(MockValueConstructor.kt:420)
	at org.utbot.framework.concrete.MockValueConstructor.constructFromAssembleModel(MockValueConstructor.kt:370)
	at org.utbot.framework.concrete.MockValueConstructor.construct(MockValueConstructor.kt:132)
	at org.utbot.framework.concrete.MockValueConstructor.constructMethodParameters(MockValueConstructor.kt:107)
	at org.utbot.framework.concrete.UtExecutionInstrumentation.invoke(UtExecutionInstrumentation.kt:156)
	at org.utbot.framework.concrete.UtExecutionInstrumentation.invoke(UtExecutionInstrumentation.kt:118)
	at org.utbot.instrumentation.process.ChildProcessKt$setup$2.invoke(ChildProcess.kt:211)
	at org.utbot.instrumentation.process.ChildProcessKt$setup$2.invoke(ChildProcess.kt:208)
	at org.utbot.instrumentation.process.ChildProcessKt$measureExecutionForTermination$2$1$1.invoke(ChildProcess.kt:190)
	at org.utbot.instrumentation.process.ChildProcessKt$measureExecutionForTermination$1.invokeSuspend(ChildProcess.kt:174)
	at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
	at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:106)
	at kotlinx.coroutines.EventLoopImplBase.processNextEvent(EventLoop.common.kt:284)
	at kotlinx.coroutines.BlockingCoroutine.joinBlocking(Builders.kt:85)
	at kotlinx.coroutines.BuildersKt__BuildersKt.runBlocking(Builders.kt:59)
	at kotlinx.coroutines.BuildersKt.runBlocking(Unknown Source)
	at kotlinx.coroutines.BuildersKt__BuildersKt.runBlocking$default(Builders.kt:38)
	at kotlinx.coroutines.BuildersKt.runBlocking$default(Unknown Source)
	at org.utbot.instrumentation.process.ChildProcessKt.measureExecutionForTermination(ChildProcess.kt:171)
	at org.utbot.instrumentation.process.ChildProcessKt.access$measureExecutionForTermination(ChildProcess.kt:1)
	at org.utbot.instrumentation.process.ChildProcessKt$measureExecutionForTermination$2$1.invokeSuspend(ChildProcess.kt:188)
	at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
	at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:106)
	at kotlinx.coroutines.EventLoopImplBase.processNextEvent(EventLoop.common.kt:284)
	at kotlinx.coroutines.BlockingCoroutine.joinBlocking(Builders.kt:85)
	at kotlinx.coroutines.BuildersKt__BuildersKt.runBlocking(Builders.kt:59)
	at kotlinx.coroutines.BuildersKt.runBlocking(Unknown Source)
	at kotlinx.coroutines.BuildersKt__BuildersKt.runBlocking$default(Builders.kt:38)
	at kotlinx.coroutines.BuildersKt.runBlocking$default(Unknown Source)
	at org.utbot.instrumentation.process.ChildProcessKt$measureExecutionForTermination$2.invoke(ChildProcess.kt:187)
	at com.jetbrains.rd.framework.IRdEndpoint$set$1.invoke(TaskInterfaces.kt:182)
	at com.jetbrains.rd.framework.IRdEndpoint$set$1.invoke(TaskInterfaces.kt:182)
	at com.jetbrains.rd.framework.impl.RdCall.onWireReceived(RdTask.kt:360)
	at com.jetbrains.rd.framework.MessageBroker$invoke$2$2.invoke(MessageBroker.kt:57)
	at com.jetbrains.rd.framework.MessageBroker$invoke$2$2.invoke(MessageBroker.kt:56)
	at com.jetbrains.rd.framework.impl.ProtocolContexts.readMessageContextAndInvoke(ProtocolContexts.kt:148)
	at com.jetbrains.rd.framework.MessageBroker$invoke$2.invoke(MessageBroker.kt:56)
	at com.jetbrains.rd.framework.MessageBroker$invoke$2.invoke(MessageBroker.kt:54)
	at com.jetbrains.rd.util.threading.SingleThreadSchedulerBase.queue$lambda-3(SingleThreadScheduler.kt:41)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at java.base/java.lang.Thread.run(Thread.java:829)
WARNING: Illegal reflective access by org.utbot.framework.concrete.UtModelConstructor (file:/C:/Users/lWX1182794/AppData/Roaming/JetBrains/IntelliJIdea2022.1/plugins/utbot-intellij/lib/utbot-framework-2022.9.368.jar) to field java.util.Vector.elementData
WARNING: Illegal reflective access by org.utbot.framework.concrete.UtModelConstructor (file:/C:/Users/lWX1182794/AppData/Roaming/JetBrains/IntelliJIdea2022.1/plugins/utbot-intellij/lib/utbot-framework-2022.9.368.jar) to field java.util.Vector.elementCount
WARNING: Illegal reflective access by org.utbot.framework.concrete.UtModelConstructor (file:/C:/Users/lWX1182794/AppData/Roaming/JetBrains/IntelliJIdea2022.1/plugins/utbot-intellij/lib/utbot-framework-2022.9.368.jar) to field java.util.Vector.capacityIncrement
WARNING: Illegal reflective access by org.utbot.framework.concrete.UtModelConstructor (file:/C:/Users/lWX1182794/AppData/Roaming/JetBrains/IntelliJIdea2022.1/plugins/utbot-intellij/lib/utbot-framework-2022.9.368.jar) to field java.util.AbstractList.modCount
WARNING: Illegal reflective access by org.utbot.framework.concrete.UtModelConstructor (file:/C:/Users/lWX1182794/AppData/Roaming/JetBrains/IntelliJIdea2022.1/plugins/utbot-intellij/lib/utbot-framework-2022.9.368.jar) to field java.util.IdentityHashMap$Values.this$0
WARNING: Illegal reflective access by org.utbot.framework.concrete.UtModelConstructor (file:/C:/Users/lWX1182794/AppData/Roaming/JetBrains/IntelliJIdea2022.1/plugins/utbot-intellij/lib/utbot-framework-2022.9.368.jar) to field java.lang.ProcessEnvironment$CheckedValues.c
18:18:25.515 ERROR| java.lang.NullPointerException
	at java.base/java.util.Vector.elementData(Vector.java:762)
	at java.base/java.util.Vector$Itr.next(Vector.java:1282)
	at java.base/java.util.AbstractList.hashCode(AbstractList.java:566)
	at java.base/java.util.Vector.hashCode(Vector.java:1106)
	at java.base/java.util.HashMap.hash(HashMap.java:340)
	at java.base/java.util.HashMap.put(HashMap.java:608)
	at java.base/java.util.HashSet.add(HashSet.java:220)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at org.utbot.common.KClassUtilKt.invokeCatching(KClassUtil.kt:10)
	at org.utbot.framework.concrete.MockValueConstructor$call$1.invoke(MockValueConstructor.kt:478)
	at org.utbot.framework.concrete.MockValueConstructor$call$1.invoke(MockValueConstructor.kt:477)
	at org.utbot.instrumentation.process.SecurityKt$runSandbox$1$1.invoke(Security.kt:38)
	at org.utbot.instrumentation.process.SecurityKt$sandbox$1.invoke(Security.kt:61)
	at org.utbot.instrumentation.process.SecurityKt$sandbox$2.invoke(Security.kt:77)
	at org.utbot.instrumentation.process.SecurityKt$sandbox$3.invoke(Security.kt:82)
	at org.utbot.instrumentation.process.SecurityKt$sandbox$4.run(Security.kt:88)
	at java.base/java.security.AccessController.doPrivileged(Native Method)
	at org.utbot.instrumentation.process.SecurityKt.sandbox(Security.kt:88)
	at org.utbot.instrumentation.process.SecurityKt.sandbox(Security.kt:82)
	at org.utbot.instrumentation.process.SecurityKt.sandbox(Security.kt:77)
	at org.utbot.instrumentation.process.SecurityKt.sandbox(Security.kt:61)
	at org.utbot.instrumentation.process.SecurityKt.runSandbox(Security.kt:38)
	at org.utbot.framework.concrete.MockValueConstructor.call(MockValueConstructor.kt:477)
	at org.utbot.framework.concrete.MockValueConstructor.updateWithExecutableCallModel(MockValueConstructor.kt:420)
	at org.utbot.framework.concrete.MockValueConstructor.constructFromAssembleModel(MockValueConstructor.kt:370)
	at org.utbot.framework.concrete.MockValueConstructor.construct(MockValueConstructor.kt:132)
	at org.utbot.framework.concrete.MockValueConstructor.constructMethodParameters(MockValueConstructor.kt:107)
	at org.utbot.framework.concrete.UtExecutionInstrumentation.invoke(UtExecutionInstrumentation.kt:156)
	at org.utbot.framework.concrete.UtExecutionInstrumentation.invoke(UtExecutionInstrumentation.kt:118)
	at org.utbot.instrumentation.process.ChildProcessKt$setup$2.invoke(ChildProcess.kt:211)
	at org.utbot.instrumentation.process.ChildProcessKt$setup$2.invoke(ChildProcess.kt:208)
	at org.utbot.instrumentation.process.ChildProcessKt$measureExecutionForTermination$2$1$1.invoke(ChildProcess.kt:190)
	at org.utbot.instrumentation.process.ChildProcessKt$measureExecutionForTermination$1.invokeSuspend(ChildProcess.kt:174)
	at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
	at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:106)
	at kotlinx.coroutines.EventLoopImplBase.processNextEvent(EventLoop.common.kt:284)
	at kotlinx.coroutines.BlockingCoroutine.joinBlocking(Builders.kt:85)
	at kotlinx.coroutines.BuildersKt__BuildersKt.runBlocking(Builders.kt:59)
	at kotlinx.coroutines.BuildersKt.runBlocking(Unknown Source)
	at kotlinx.coroutines.BuildersKt__BuildersKt.runBlocking$default(Builders.kt:38)
	at kotlinx.coroutines.BuildersKt.runBlocking$default(Unknown Source)
	at org.utbot.instrumentation.process.ChildProcessKt.measureExecutionForTermination(ChildProcess.kt:171)
	at org.utbot.instrumentation.process.ChildProcessKt.access$measureExecutionForTermination(ChildProcess.kt:1)
	at org.utbot.instrumentation.process.ChildProcessKt$measureExecutionForTermination$2$1.invokeSuspend(ChildProcess.kt:188)
	at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
	at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:106)
	at kotlinx.coroutines.EventLoopImplBase.processNextEvent(EventLoop.common.kt:284)
	at kotlinx.coroutines.BlockingCoroutine.joinBlocking(Builders.kt:85)
	at kotlinx.coroutines.BuildersKt__BuildersKt.runBlocking(Builders.kt:59)
	at kotlinx.coroutines.BuildersKt.runBlocking(Unknown Source)
	at kotlinx.coroutines.BuildersKt__BuildersKt.runBlocking$default(Builders.kt:38)
	at kotlinx.coroutines.BuildersKt.runBlocking$default(Unknown Source)
	at org.utbot.instrumentation.process.ChildProcessKt$measureExecutionForTermination$2.invoke(ChildProcess.kt:187)
	at com.jetbrains.rd.framework.IRdEndpoint$set$1.invoke(TaskInterfaces.kt:182)
	at com.jetbrains.rd.framework.IRdEndpoint$set$1.invoke(TaskInterfaces.kt:182)
	at com.jetbrains.rd.framework.impl.RdCall.onWireReceived(RdTask.kt:360)
	at com.jetbrains.rd.framework.MessageBroker$invoke$2$2.invoke(MessageBroker.kt:57)
	at com.jetbrains.rd.framework.MessageBroker$invoke$2$2.invoke(MessageBroker.kt:56)
	at com.jetbrains.rd.framework.impl.ProtocolContexts.readMessageContextAndInvoke(ProtocolContexts.kt:148)
	at com.jetbrains.rd.framework.MessageBroker$invoke$2.invoke(MessageBroker.kt:56)
	at com.jetbrains.rd.framework.MessageBroker$invoke$2.invoke(MessageBroker.kt:54)
	at com.jetbrains.rd.util.threading.SingleThreadSchedulerBase.queue$lambda-3(SingleThreadScheduler.kt:41)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at java.base/java.lang.Thread.run(Thread.java:829)
```

</details>

**Visual proofs (screenshots, logs, images)**

~~~java
///region Errors report for isDiagonal

 public void testIsDiagonal_errors() {
 // Couldn't generate some tests. List of errors:
 // 
 // 4 occurrences of:
 // Concrete execution failed

 }
 ///endregion
~~~

**Environment**

Windows 10 Pro
JDK 11
Gradle

**Additional context**

In Fuzzing only mode correct tests are generated without concrete executions issues.

Found on testing #988 

Navigation Menu

Uh oh!

Concrete execution exceptions for Collection<Collection<Double>> #1020

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Uh oh!

Concrete execution exceptions for Collection<Collection<Double>> #1020

Description

Metadata

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Issue actions