Goal:
    __x1 : BinNums.Z
  ============================
   (let __wit := [] in
    let __varmap := VarMap.Elt __x1 in
    let __ff :=
      Tauto.A Tauto.isProp
        {|
          RingMicromega.Flhs := EnvRing.PEX BinNums.xH;
          RingMicromega.Fop := RingMicromega.OpEq;
          RingMicromega.Frhs :=
            EnvRing.PEadd (EnvRing.PEX BinNums.xH) (EnvRing.PEc BinNums.Z0)
        |} tt in
    __x1 = BinInt.Z.add __x1 BinNums.Z0)


DEBUG:Going to execute:
zchecker