Program: 55900
Project: 55900
Buggy source:
/** 
 * Checks if the given   {@link AllocatedResource} is still required for theexecution of the given execution graph. If the resource is no longer assigned to a vertex that is either currently running or about to run the given resource is returned to the instance manager for deallocation.
 * @param executionGraph the execution graph the provided resource has been used for so far
 * @param allocatedResource the allocated resource to check the assignment for
 */
public void checkAndReleaseAllocatedResource(ExecutionGraph executionGraph,AllocatedResource allocatedResource){
  if (allocatedResource == null) {
    LOG.error("String_Node_Str");
    return;
  }
  if (allocatedResource.getInstance() instanceof DummyInstance) {
    LOG.debug("String_Node_Str");
    return;
  }
synchronized (executionGraph) {
    final List<ExecutionVertex> assignedVertices=executionGraph.getVerticesAssignedToResource(allocatedResource);
    if (assignedVertices.isEmpty()) {
      return;
    }
    boolean instanceCanBeReleased=true;
    final Iterator<ExecutionVertex> it=assignedVertices.iterator();
    while (it.hasNext()) {
      final ExecutionVertex vertex=it.next();
      final ExecutionState state=vertex.getExecutionState();
      if (state != ExecutionState.CREATED && state != ExecutionState.FINISHED && state != ExecutionState.FAILED) {
        instanceCanBeReleased=false;
        break;
      }
    }
    if (instanceCanBeReleased) {
      LOG.info("String_Node_Str" + allocatedResource.getInstance());
      try {
        getInstanceManager().releaseAllocatedResource(executionGraph.getJobID(),executionGraph.getJobConfiguration(),allocatedResource);
      }
 catch (      InstanceException e) {
        LOG.error(StringUtils.stringifyException(e));
      }
    }
  }
}

Fixed version (ground truth):
/** 
 * Checks if the given   {@link AllocatedResource} is still required for theexecution of the given execution graph. If the resource is no longer assigned to a vertex that is either currently running or about to run the given resource is returned to the instance manager for deallocation.
 * @param executionGraph the execution graph the provided resource has been used for so far
 * @param allocatedResource the allocated resource to check the assignment for
 */
public void checkAndReleaseAllocatedResource(ExecutionGraph executionGraph,AllocatedResource allocatedResource){
  if (allocatedResource == null) {
    LOG.error("String_Node_Str");
    return;
  }
  if (allocatedResource.getInstance() instanceof DummyInstance) {
    LOG.debug("String_Node_Str");
    return;
  }
synchronized (executionGraph) {
    final List<ExecutionVertex> assignedVertices=executionGraph.getVerticesAssignedToResource(allocatedResource);
    if (assignedVertices.isEmpty()) {
      return;
    }
    boolean instanceCanBeReleased=true;
    final Iterator<ExecutionVertex> it=assignedVertices.iterator();
    while (it.hasNext()) {
      final ExecutionVertex vertex=it.next();
      final ExecutionState state=vertex.getExecutionState();
      if (state != ExecutionState.CREATED && state != ExecutionState.FINISHED && state != ExecutionState.FAILED && state != ExecutionState.CANCELED) {
        instanceCanBeReleased=false;
        break;
      }
    }
    if (instanceCanBeReleased) {
      LOG.info("String_Node_Str" + allocatedResource.getInstance());
      try {
        getInstanceManager().releaseAllocatedResource(executionGraph.getJobID(),executionGraph.getJobConfiguration(),allocatedResource);
      }
 catch (      InstanceException e) {
        LOG.error(StringUtils.stringifyException(e));
      }
    }
  }
}