fact: Definition nat_norm := (Nat.add_0_r, Nat.add_0_l, Nat.sub_0_r, Nat.sub_diag, Nat.mul_1_r, Nat.mul_1_l, Nat.mod_1_r).
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