Concrete execution fails when Fuzzing tries to initialize Date with String

[alisevych]

Description

IllegalArgumentException is thrown from Date. when a String is passed as a parameter.

To Reproduce

Steps to reproduce the behavior:

1. UTBotJava project is opened in IDEA with UTBot plugin installed
2. Check that fuzzing is turned on (Settings -> Tools -> UTBot, Code analysis - leftmost position)
3. Open utbot-sample/src/main/java/org/utbot/examples/stdlib/DateExample.java
4. Generate tests for it
5. Open the generated test

Expected behavior

Tests are supposed to be generated without errors.

Actual behavior

There is the Errors report for getTime.

Visual proofs (screenshots, logs, images)

    public void testGetTime_errors() {
        // Couldn't generate some tests. List of errors:
        // 
        // 1 occurrences of:
        // Default concrete execution failed

    }

The following exception is in the logs:

java.lang.reflect.InvocationTargetException
	at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490)
	at org.utbot.framework.concrete.MockValueConstructor.call(MockValueConstructor.kt:446)
	at org.utbot.framework.concrete.MockValueConstructor.updateWithExecutableCallModel(MockValueConstructor.kt:372)
	at org.utbot.framework.concrete.MockValueConstructor.constructFromAssembleModel(MockValueConstructor.kt:351)
	at org.utbot.framework.concrete.MockValueConstructor.construct(MockValueConstructor.kt:129)
	at org.utbot.framework.concrete.MockValueConstructor.constructMethodParameters(MockValueConstructor.kt:104)
	at org.utbot.framework.concrete.UtExecutionInstrumentation.invoke(UtExecutionInstrumentation.kt:143)
	at org.utbot.framework.concrete.UtExecutionInstrumentation.invoke(UtExecutionInstrumentation.kt:106)
	at org.utbot.instrumentation.process.ChildProcessKt.loop(ChildProcess.kt:133)
	at org.utbot.instrumentation.process.ChildProcessKt.main(ChildProcess.kt:77)
	at org.utbot.instrumentation.process.ChildProcessKt.main(ChildProcess.kt)
Caused by: java.lang.IllegalArgumentException
	at java.base/java.util.Date.parse(Date.java:616)
	at java.base/java.util.Date.<init>(Date.java:274)
	... 14 more

Environment

Windows 10 Pro
Gradle project
JDK 8 / 11

Additional context

Symbolic analysis only mode doesn't produce this error.

[Markoutte]

The problem that fuzzer tries to create an object to pass it into a method as a value. Fuzzer can generate object like new Date("some string") that is obvious leads to parse exception. This can happen to each object that is needed to be created, but throws an exception from its constructor