WARNING: state f24 is unreachable
WARNING: state f27 is unreachable

==> main.fstb MAY NOT TERMINATE. 

Cycle with transition(s):

t0 [A = 0, B = 0, C = 0, D = 0, E = 0, A__o = 0, B__o = 0, C__o = 0, D__o = 0, E__o = 0]
 -> t4 [A = 0, B = 0, C = 0, D = 0, E = 0, A__o = 0, B__o = 0, C__o = 0, D__o = 0, E__o = 0]

is likely to be an infinite loop.