Goal:
    z : Z  z0 : Z  z1 : Z
  ============================
   (Some (Z.max z z0 + z1)%Z = Some (Z.max z z0 + z1)%Z)


DEBUG:Going to execute:
easy
DEBUG LTAC Evaluated term: Z.add_max_distr_r
DEBUG LTAC Evaluated term: Z.add_max_distr_r