proposition: Fact length_move_rev_stack : length move_rev_stack = 7.
proof: Proof. auto. Qed.
imports: List Arith Lia Bool Undecidability.Shared.Libs.DLW(utils list_bool pos vec subcode sss) Undecidability.StackMachines.BSM(tiles_solvable bsm_defs)