reserve R for Ring,
  r for Element of R,
  a, b, d1, d2 for Data-Location of R,
  il, i1, i2 for Nat,
  I for Instruction of SCM R,
  s,s1, s2 for State of SCM R,
  T for InsType of the InstructionsF of SCM R,
  k for Nat;

theorem Th2:
  a <> IC SCM R
proof
  a in SCM-Data-Loc by AMI_2:def 16;
  then a <> NAT by AMI_2:20;
  hence thesis by SCMRING2:8;
end;
