Goal:
    a : byte  b : byte  e : NoConfusion_byte a b
  ============================
   (noConfusion_byte_obligation_2 a b (noConfusion_byte_obligation_1 a b e) =
    e)


DEBUG:Going to execute:
match goal with
           | |- well_founded _ => auto with *
           | |- ?T => match type of T with
                      | Prop => auto
                      end
           end