Goal:
    __x2 : Z  __x1 : Z
  ============================
   (let __wit := nil in
    let __varmap := VarMap.Branch (VarMap.Elt __x2) __x1 VarMap.Empty in
    let __ff :=
      Tauto.IMPL
        (Tauto.A Tauto.isProp
           {|
             RingMicromega.Flhs := EnvRing.PEX 1;
             RingMicromega.Fop := RingMicromega.OpLt;
             RingMicromega.Frhs :=
               EnvRing.PEadd (EnvRing.PEX 2) (EnvRing.PEc 1%Z)
           |} tt) None
        (Tauto.IMPL
           (Tauto.NOT
              (Tauto.A Tauto.isProp
                 {|
                   RingMicromega.Flhs := EnvRing.PEX 2;
                   RingMicromega.Fop := RingMicromega.OpEq;
                   RingMicromega.Frhs := EnvRing.PEX 1
                 |} tt)) None
           (Tauto.A Tauto.isProp
              {|
                RingMicromega.Flhs := EnvRing.PEX 1;
                RingMicromega.Fop := RingMicromega.OpLt;
                RingMicromega.Frhs := EnvRing.PEX 2
              |} tt)) in
    (__x1 < __x2 + 1)%Z -> (__x2 = __x1 -> False) -> (__x1 < __x2)%Z)


DEBUG:Going to execute:
let __varmap := fresh "__varmap" in
           let __ff := fresh "__ff" in
           intros __wit __varmap __ff; exact
            (ZMicromega.ZTautoChecker_sound __ff __wit
               (eq_refl <: ZMicromega.ZTautoChecker __ff __wit = true)
               (VarMap.find 0%Z __varmap))