proposition: Lemma in_bound_try_spec_1_M : In bound_try_spec_1 M.
proof: Proof. rewrite /M -[locked bound_ops]lock. do 4 (apply /in_app_r). apply /in_app_l. by left. Qed.
imports: Relation_Operators Operators_Properties Lia PeanoNat List Undecidability.StackMachines.Reductions.CM1_HALT_to_SMNdl_UB.SMX_facts Undecidability.StackMachines.Util(Nat_facts List_facts) ssreflect ssrbool ssrfun