Goal:
  
  b : Byte.byte
  y : string
  IHy : compare y y = Lt -> False
  H : compare y y = Lt
  ============================
   False


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