fact: Definition HALF_len := ZERO_len+MOVE_len+JMP_len+INC_len+DEC_len+JMP_len+DEC_len.
imports: Undecidability(MinskyMachines.MM MinskyMachines.MMA) Undecidability.Shared.Libs.DLW(Vec.pos Vec.vec Code.sss) PeanoNat List Lia Wf_nat ssreflect ssrbool ssrfun