Goal:
  
  __x1 : Z
  __wit := [ZMicromega.RatProof
              (RingMicromega.PsatzAdd
                 (RingMicromega.PsatzMulC (EnvRing.Pc (-1))
                    (RingMicromega.PsatzIn Z 1)) (RingMicromega.PsatzIn Z 0))
              ZMicromega.DoneProof] : list ZMicromega.ZArithProof
  __varmap := VarMap.Elt __x1 : VarMap.t Z
  __ff := Tauto.IMPL
            (Tauto.A Tauto.isProp
               {|
                 RingMicromega.Flhs := EnvRing.PEc 0;
                 RingMicromega.Fop := RingMicromega.OpEq;
                 RingMicromega.Frhs := EnvRing.PEX 1
               |} tt) None
            (Tauto.A Tauto.isProp
               {|
                 RingMicromega.Flhs := EnvRing.PEX 1;
                 RingMicromega.Fop := RingMicromega.OpEq;
                 RingMicromega.Frhs := EnvRing.PEc 0
               |} tt) : Tauto.BFormula (RingMicromega.Formula Z) Tauto.isProp
  ============================
   (0 = __x1 -> __x1 = 0)


DEBUG:Going to execute:
exact
(ZMicromega.ZTautoChecker_sound __ff __wit
   (eq_refl <: ZMicromega.ZTautoChecker __ff __wit = true)
   (VarMap.find 0 __varmap))