Goal:
    _z_ : VSet.t  a : V.t
  ============================
   ((VSet.In a _z_ -> VSet.In a _z_) /\ (VSet.In a _z_ -> VSet.In a _z_))


DEBUG:Going to execute:
<coq-core.plugins.ltac::auto@0> $1 $2 $3

Goals:

DEBUG:Going to execute:
intuition VSetDecide.MSetDecideAuxiliary.fsetdec_rec ||
             fail 1 "because the goal is beyond the scope of this tactic"