let set = S.add (`Obj (uri, pos)) set in
List.fold_left (fun set (_, term) -> aux (next_pos pos) set term)
set subst
| Cic.MutConstruct (uri, typeno, consno, subst) ->
let set = S.add (`Obj (uri, pos)) set in
List.fold_left (fun set (_, term) -> aux (next_pos pos) set term)
set subst
| Cic.MutConstruct (uri, typeno, consno, subst) ->