Version: 1.13 
 _ data/zoo_json_alt_waypoint4/GtsPoland_1.json -f output/flip/data/zoo_json_alt_waypoint4/GtsPoland_1.json.subpaths
Flip subpaths generated in 0.224 seconds!
real 3.74
user 0.72
sys 0.07
<logging.Logger object at 0x7f02e5ae77d0>
W1217 12:33:46.901 2379425 flip.py:156] subpath ['15', '11', '7', '6', '0', '1', '14', '13', '25', '26', '27'] is superfluous, discarding it
Traceback (most recent call last):
  File "runflipwithdfa.py", line 39, in <module>
    main(jsonPath, subpathsPath)
  File "runflipwithdfa.py", line 30, in main
    order = flip.compute_sequence(graph)
  File "/nfs/home/student.aau.dk/rtollu18/dat7/FLIP/flip.py", line 1374, in compute_sequence
    storage.extract()
  File "/nfs/home/student.aau.dk/rtollu18/dat7/FLIP/flip.py", line 1009, in extract
    self.graph.initialize()
  File "/nfs/home/student.aau.dk/rtollu18/dat7/FLIP/flip.py", line 75, in initialize
    self.color_dag(self.final)
  File "/nfs/home/student.aau.dk/rtollu18/dat7/FLIP/flip.py", line 182, in color_dag
    'source %s is not green in %s graph' %(node, desc))
FLIP.flip.PreconditionFailedError: source 15 is not green in final graph
