Description of problem:

Simulation ends with an alert "Unable to perform simulation: Process is not valid for simulation - use validation to find errors". This alert was added with related issue.

The condition, which was added by the related issue, does not reflect type of gateway. Not sure how BPMN2SimulationDataProvider works, but I think that its behaviour is gateway's type related.

Version-Release number of selected component (if applicable):
6.0.1 ER2 BPMS

How reproducible:
Use parallel gateway instead of XOR gateway

Steps to Reproduce:
1. create process (Start->Task->XOR->Task->End)

Actual results:
step 3: simulation returns results
step 5: an alert is shown

Expected results:
step 5: simulation returns results which are expected for Parallel gateway (all outgoing sequence flow are executed)

I think that the condition should be gateway's type related.

Additional info: