Version: 1.15 
 verifypn-linux64 data/zoo_json_cond_enf2/UsSignal_2.json -T -R -O -V Low
DFA generation time: 0.035 seconds 
DFA states: 19 
DFA transitions: 253
Problem file: data/zoo_json_cond_enf2/UsSignal_2.json
Switches to update: 52

Decomposed topology into 1 subproblems
Topological decomposition took 0.0 seconds
Subproblem 0 unsolvable!
Subproblem verification time: 18.26 seconds
Problem is unsolvable!
Total program runtime: 18.853 seconds

real 19.17
user 20.16
sys 0.43
