Version: 1.13 
 _ data/zoo_json_alt_waypoint4/HiberniaUk_2.json -f output/flip/data/zoo_json_alt_waypoint4/HiberniaUk_2.json.subpaths
Flip subpaths generated in 0.15 seconds!
real 1.30
user 0.79
sys 0.11
<logging.Logger object at 0x7f0d1ce9f7d0>
W1217 12:32:33.298 2404525 flip.py:156] subpath ['13', '14', '11', '4', '12', '1', '9', '18', '15', '28', '29', '26'] is superfluous, discarding it
W1217 12:32:33.299 2404525 flip.py:156] subpath ['3', '0', '13', '14', '11', '4'] 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 74, in initialize
    self.color_dag(self.initial)
  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 3 is not green in initial graph
