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

theorem Th48:
  for a being Int-Location, l being Nat
   holds Goto l does not destroy a
proof
  let a be Int-Location;
  let l be Nat;
  now
    let i be Instruction of SCM+FSA;
A1: rng Goto l = {goto l} by AFINSQ_1:33;
    assume i in rng Goto l;
    then i = goto l by A1,TARSKI:def 1;
    hence i does not destroy a;
  end;
  hence thesis;
end;
