def AP.model_length.go
import bend-osdev-array@0.1.0.1/PROOF.bend as PROOFimport Base
import bend-osdev-array@0.1.0.1/array.bend as A
1275def AP.model_length.go(-T: Data, +d: Nat, -a: Array<T>, h: {A.Arrays.is_perfect(T, d, a) == True{} : Bool}, r: &t: AP.Tree<T> -> {AP.build(T, t) == a : Array<T>}) -> {List.length(&2, T, A.Arrays.leaves(T, a)) == A.Arrays.slots(d) : Nat}:
1276 (t, e) = r
1277 AP.model_length.go.body(T, d, a, h, t, e)