Module Alternate.
Hint Rewrite @Znth_rev using Zlength_solve : Znth.
Hint Rewrite Zlength_rev using Zlength_solve : Zlength.
Hint Unfold flip_ends : list_solve_unfold.
Existing Instance NullExtension.Espec.

Lemma prog_correct:
semax_prog prog tt Vprog Gprog.