Transparent Mem.alloc.

Lemma val_at_alloc_1:
forall m m' lo hi nb b ofs
(Halloc: Mem.alloc m lo hi  = (m', nb))
(Hvalid: Mem.valid_block m b),
Maps.ZMap.get ofs (Maps.PMap.get b (Mem.mem_contents m)) =
Maps.ZMap.get ofs (Maps.PMap.get b (Mem.mem_contents m')).