Section ALLOC_OK.
Variable nextb: positive.
Variable nextb': positive.
Variable LESS:  (nextb <= nextb')%positive.
End ALLOC_OK.

Lemma sem_cmp_ok:
forall nextb op v1 t1 v2 t2 m v,
Cop.sem_cmp op v1 t1 v2 t2 m = Some v ->
val_ok nextb v1 -> val_ok nextb v2 -> val_ok nextb v.