def seek_double
import bendtorch-core@0.1.0.0/src/storage/api.bend as Apiimport Base
import bendtorch-core@0.1.0.0/src/storage/model.bend as Model
613def seek_double(+k: Nat, +c: Nat, +sized: {c == Model.capacity(k) : Nat}) -> {Nat.add(c, c) == Model.capacity(1n+k) : Nat}:
614 %sized : {Nat.add(c, c) == Nat.add(_, _) : Nat}
615 {==}