WARNING: state f12 is unreachable
WARNING: state f11 is unreachable

==> YES, main.fstb terminates. max_dim = 1

+-----------------------------------------------------------------------------+
|                             Ranking Function                                |
+-----------------------------------------------------------------------------+

state f12:

state f11:

state f28:
1

state f20:
0

state ____f28:
2


Ranking:unimodularize: empty ranking function