Goal:
  
  __wit := [] : list ZMicromega.ZArithProof
  __varmap := VarMap.Empty : VarMap.t BinNums.Z
  __ff := Tauto.A Tauto.isProp
            {|
              RingMicromega.Flhs := EnvRing.PEc BinNums.Z0;
              RingMicromega.Fop := RingMicromega.OpGe;
              RingMicromega.Frhs := EnvRing.PEc BinNums.Z0
            |} tt
       : Tauto.BFormula (RingMicromega.Formula BinNums.Z) Tauto.isProp
  ============================
   (BinInt.Z.ge BinNums.Z0 BinNums.Z0)


DEBUG:Going to execute:
exact
(ZMicromega.ZTautoChecker_sound __ff __wit
   (eq_refl <: ZMicromega.ZTautoChecker __ff __wit = true)
   (VarMap.find BinNums.Z0 __varmap))