Version: 1.15 
 verifypn-linux64 data/zoo_json_cond_enf1/NetworkUsa_4.json -T -R -O -V Low
DFA generation time: 0.024 seconds 
DFA states: 7 
DFA transitions: 309
Problem file: data/zoo_json_cond_enf1/NetworkUsa_4.json
Switches to update: 128

Decomposed topology into 1 subproblems
Topological decomposition took 0.001 seconds
Subproblem 0 unsolvable!
Subproblem verification time: 0.826 seconds
Problem is unsolvable!
Total program runtime: 1.465 seconds

real 1.76
user 3.69
sys 0.24
