Goal:
  
  x : Byte.byte
  y : Byte.byte
  H : Byte.to_N x = Byte.to_N y
  H0 : Some x = Some y
  ============================
   (x = y -> x = y)


DEBUG:Going to execute:
<coq-core.plugins.ltac::auto@0> $1 $2 $3
DEBUG LTAC Evaluated term: H0