 --> [ local path prefix ]/state_machine/redef/state_choice.fpp:4:10
  |
4 |   choice S { if g enter S else enter S }
  |          ^ redefinition of symbol S
  |
 ::: [ local path prefix ]/state_machine/redef/state_choice.fpp:3:3
  |
3 |   state S
  |   ------- previous definition is here

 --> [ local path prefix ]/state_machine/redef/state_choice.fpp:1:15
  |
1 | state machine M {
  |               ^ state machine must have initial transition

