(* Import the AST of this C program *)
(* The next line is "boilerplate", always required after importing an AST. *)
Instance CompSpecs : compspecs.Definition Vprog : varspecs.

Lemma In_Znth : forall A (d: Inhabitant A) (l : list A) x, In x l -> exists i, 0 <= i < Zlength l /\ Znth i l = x.