Program: 56180
Project: 56180
Buggy source:
private void dispatchEvent(AbstractEvent event,GraphVisualizationData graphVisualizationData){
  if (event instanceof VertexProfilingEvent) {
    final VertexProfilingEvent vertexProfilingEvent=(VertexProfilingEvent)event;
    final ManagementGraph graph=graphVisualizationData.getManagementGraph();
    final ManagementVertex vertex=graph.getVertexByID(vertexProfilingEvent.getVertexID());
    if (vertexProfilingEvent instanceof ThreadProfilingEvent) {
      final VertexVisualizationData vertexVisualizationData=(VertexVisualizationData)vertex.getAttachment();
      vertexVisualizationData.processThreadProfilingEvent((ThreadProfilingEvent)vertexProfilingEvent);
    }
 else     if (vertexProfilingEvent instanceof OutputGateProfilingEvent) {
      final OutputGateProfilingEvent outputGateProfilingEvent=(OutputGateProfilingEvent)vertexProfilingEvent;
      final ManagementGate managementGate=vertex.getOutputGate(outputGateProfilingEvent.getGateIndex());
      final GateVisualizationData gateVisualizationData=(GateVisualizationData)managementGate.getAttachment();
      gateVisualizationData.processOutputGateProfilingEvent(outputGateProfilingEvent);
    }
 else     if (vertexProfilingEvent instanceof InputGateProfilingEvent) {
      final InputGateProfilingEvent inputGateProfilingEvent=(InputGateProfilingEvent)vertexProfilingEvent;
      final ManagementGate managementGate=vertex.getInputGate(inputGateProfilingEvent.getGateIndex());
      final GateVisualizationData gateVisualizationData=(GateVisualizationData)managementGate.getAttachment();
      gateVisualizationData.processInputGateProfilingEvent(inputGateProfilingEvent);
    }
  }
 else   if (event instanceof InstanceProfilingEvent) {
    final NetworkTopology networkTopology=graphVisualizationData.getNetworkTopology();
    if (event instanceof InstanceSummaryProfilingEvent) {
      final InstanceVisualizationData instanceVisualizationData=(InstanceVisualizationData)networkTopology.getAttachment();
      instanceVisualizationData.processInstanceProfilingEvent((InstanceSummaryProfilingEvent)event);
    }
 else {
      final SingleInstanceProfilingEvent singleInstanceProfilingEvent=(SingleInstanceProfilingEvent)event;
      final NetworkNode networkNode=networkTopology.getNodeByName(singleInstanceProfilingEvent.getInstanceName());
      final InstanceVisualizationData instanceVisualizationData=(InstanceVisualizationData)networkNode.getAttachment();
      instanceVisualizationData.processInstanceProfilingEvent(singleInstanceProfilingEvent);
    }
  }
 else   if (event instanceof ExecutionStateChangeEvent) {
    final ExecutionStateChangeEvent executionStateChangeEvent=(ExecutionStateChangeEvent)event;
    final ManagementGraph graph=graphVisualizationData.getManagementGraph();
    final ManagementVertex vertex=graph.getVertexByID(executionStateChangeEvent.getVertexID());
    vertex.setExecutionState(executionStateChangeEvent.getNewExecutionState());
  }
 else {
    System.out.println("String_Node_Str" + event);
  }
}

Fixed version (ground truth):
private void dispatchEvent(AbstractEvent event,GraphVisualizationData graphVisualizationData){
  if (event instanceof VertexProfilingEvent) {
    final VertexProfilingEvent vertexProfilingEvent=(VertexProfilingEvent)event;
    final ManagementGraph graph=graphVisualizationData.getManagementGraph();
    final ManagementVertex vertex=graph.getVertexByID(vertexProfilingEvent.getVertexID());
    if (vertexProfilingEvent instanceof ThreadProfilingEvent) {
      final VertexVisualizationData vertexVisualizationData=(VertexVisualizationData)vertex.getAttachment();
      vertexVisualizationData.processThreadProfilingEvent((ThreadProfilingEvent)vertexProfilingEvent);
    }
 else     if (vertexProfilingEvent instanceof OutputGateProfilingEvent) {
      final OutputGateProfilingEvent outputGateProfilingEvent=(OutputGateProfilingEvent)vertexProfilingEvent;
      final ManagementGate managementGate=vertex.getOutputGate(outputGateProfilingEvent.getGateIndex());
      final GateVisualizationData gateVisualizationData=(GateVisualizationData)managementGate.getAttachment();
      gateVisualizationData.processOutputGateProfilingEvent(outputGateProfilingEvent);
    }
 else     if (vertexProfilingEvent instanceof InputGateProfilingEvent) {
      final InputGateProfilingEvent inputGateProfilingEvent=(InputGateProfilingEvent)vertexProfilingEvent;
      final ManagementGate managementGate=vertex.getInputGate(inputGateProfilingEvent.getGateIndex());
      final GateVisualizationData gateVisualizationData=(GateVisualizationData)managementGate.getAttachment();
      gateVisualizationData.processInputGateProfilingEvent(inputGateProfilingEvent);
    }
  }
 else   if (event instanceof InstanceProfilingEvent) {
    final NetworkTopology networkTopology=graphVisualizationData.getNetworkTopology();
    if (event instanceof InstanceSummaryProfilingEvent) {
      final InstanceVisualizationData instanceVisualizationData=(InstanceVisualizationData)networkTopology.getAttachment();
      instanceVisualizationData.processInstanceProfilingEvent((InstanceSummaryProfilingEvent)event);
    }
 else {
      final SingleInstanceProfilingEvent singleInstanceProfilingEvent=(SingleInstanceProfilingEvent)event;
      final NetworkNode networkNode=networkTopology.getNodeByName(singleInstanceProfilingEvent.getInstanceName());
      final InstanceVisualizationData instanceVisualizationData=(InstanceVisualizationData)networkNode.getAttachment();
      instanceVisualizationData.processInstanceProfilingEvent(singleInstanceProfilingEvent);
    }
  }
 else   if (event instanceof ExecutionStateChangeEvent) {
    final ExecutionStateChangeEvent executionStateChangeEvent=(ExecutionStateChangeEvent)event;
    final ManagementGraph graph=graphVisualizationData.getManagementGraph();
    final ManagementVertex vertex=graph.getVertexByID(executionStateChangeEvent.getVertexID());
    vertex.setExecutionState(executionStateChangeEvent.getNewExecutionState());
  }
 else   if (event instanceof VertexAssignmentEvent) {
    final VertexAssignmentEvent vertexAssignmentEvent=(VertexAssignmentEvent)event;
    final ManagementGraph graph=graphVisualizationData.getManagementGraph();
    final ManagementVertex vertex=graph.getVertexByID(vertexAssignmentEvent.getVertexID());
    vertex.setInstanceName(vertexAssignmentEvent.getInstanceName());
    vertex.setInstanceType(vertexAssignmentEvent.getInstanceType());
  }
 else {
    System.out.println("String_Node_Str" + event);
  }
}