Remark in_remove:
forall (A: Type) (eq: forall (x y: A), {x=y}+{x<>y}) x y l,
In y (List.remove eq x l) <-> x <> y /\ In y l.

Lemma kill_loads_after_store_holds:
forall valu ge sp rs m n addr args a chunk v m' bc approx ae am,
numbering_holds valu ge (Vptr sp Ptrofs.zero) rs m n ->
eval_addressing ge (Vptr sp Ptrofs.zero) addr rs##args = Some a ->
Mem.storev chunk m a v = Some m' ->
genv_match bc ge ->
bc sp = BCstack ->
ematch bc rs ae ->
approx = VA.State ae am ->
numbering_holds valu ge (Vptr sp Ptrofs.zero) rs m'
(kill_loads_after_store approx n chunk addr args).