Goal:
    x : V.t  y : V.t  p : VSet.t  a : V.t  H : True -> False
  ============================
   (False -> False)


DEBUG:Going to execute:
intro; clear id
Level 4: evaluation returns
<coq-core.plugins.ltac::cut@0>
where
$1 := False
of type
constr of type tacvalue