theorem
  for i being Instruction of SCM+FSA, a being Int-Location holds
  i does not refer a implies Macro i does not refer a
proof
  let i be Instruction of SCM+FSA;
  let a be Int-Location;
A1: rng Macro i = {i,halt SCM+FSA} by COMPOS_1:67;
  assume i does not refer a;
  then for ii be Instruction of SCM+FSA st ii in rng Macro i holds
  ii does not refer a by A1,TARSKI:def 2;
  hence thesis;
end;
