reserve m for Nat;
reserve P,PP,P1,P2 for Instruction-Sequence of SCM+FSA;

theorem
  for i,j being Instruction of SCM+FSA, a being Int-Location st i
  does not destroy a & j does not destroy a holds i ";" j does not destroy a
proof
  let i,j be Instruction of SCM+FSA;
  let a be Int-Location;
  assume that
A1: i does not destroy a and
A2: j does not destroy a;
A3: Macro j does not destroy a by A2,Th39;
  Macro i does not destroy a by A1,Th39;
  hence thesis by A3,Th43;
end;
