Model auto validator doesn't exit JVM process (threads stuck in some pool).

"pool-3-thread-1" #47 prio=5 os_prio=0 cpu=0.00ms elapsed=8.46s tid=0x00000231ec09c800 nid=0xaa28 waiting on condition  [0x000000a0365fe000]
   java.lang.Thread.State: TIMED_WAITING (parking)
	at jdk.internal.misc.Unsafe.park(java.base@11.0.8/Native Method)
	- parking to wait for  <0x00000004352a6938> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
	at java.util.concurrent.locks.LockSupport.parkNanos(java.base@11.0.8/LockSupport.java:234)
	at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(java.base@11.0.8/AbstractQueuedSynchronizer.java:2123)
	at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(java.base@11.0.8/ScheduledThreadPoolExecutor.java:1182)
	at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(java.base@11.0.8/ScheduledThreadPoolExecutor.java:899)
	at java.util.concurrent.ThreadPoolExecutor.getTask(java.base@11.0.8/ThreadPoolExecutor.java:1054)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(java.base@11.0.8/ThreadPoolExecutor.java:1114)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(java.base@11.0.8/ThreadPoolExecutor.java:628)
	at java.lang.Thread.run(java.base@11.0.8/Thread.java:834)