End SemaxContext.
Hint Resolve @age_laterR.
Fixpoint filter_seq (k: cont) : cont :=
match k with
| Kseq s :: k1 => filter_seq k1
| _ => k
end.

(* BEGIN Lemmas duplicated from Clight_sim. v *)
Lemma dec_skip: forall s, {s=Sskip}+{s<>Sskip}.