fact: Definition allocb_sp (p : ideald allocb_s.1) y m := exists i, i \In id_val p /\ y = Val (fresh i) /\ m = i :+ updi (fresh i) (nseq n v).
imports: mathcomp(ssreflect ssrbool ssrfun ssrnat eqtype seq) LemmaOverloading(prelude heaps rels hprop domains)