INFO: exception while executing command org.jbpm.pvm.internal.cmd.CompositeCmd@1175881
org.hibernate.exception.ConstraintViolationException: could not delete: org.jbpm.pvm.internal.task.SwimlaneImpl#280142

<?xml version="1.0" encoding="UTF-8"?>

<process name="test" xmlns="http://jbpm.org/4.0/jpdl">

<swimlane candidate-groups="A" name="A"/>

<swimlane candidate-groups="B" name="B"/>

<start name="start">
<transition to="task1A"/>
</start>

<task name="task1A" swimlane="A">
<transition to="task1B"/>
</task>

<task name="task1B" swimlane="B">
<transition to="fork"/>
</task>

<fork name="fork">
<transition to="task2A"/>
<transition to="task2B"/>
</fork>

<task name="task2A" swimlane="A">
<transition to="join"/>
</task>

<task name="task2B" swimlane="B">
<transition to="join"/>
</task>

<join name="join">
<transition to="end"/>
</join>

<end name="end"/>

</process>