Version: 1.13 
 _ data/zoo_json_alt_waypoint4/Gridnet_1.json -f output/flip/data/zoo_json_alt_waypoint4/Gridnet_1.json.subpaths
Flip subpaths generated in 0.129 seconds!
real 0.71
user 0.69
sys 0.08
<logging.Logger object at 0x7f41c60ef7d0>
W1217 12:30:46.651 2593742 flip.py:156] subpath ['0', '8', '6', '1', '7'] is superfluous, discarding it
W1217 12:30:46.651 2593742 flip.py:156] subpath ['6', '1', '7', '5'] is superfluous, discarding it
W1217 12:30:46.651 2593742 flip.py:156] subpath ['8', '6', '1', '7'] 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 0 is not green in initial graph
