theorem Th59:
  for I being Instruction of SCMPDS st I = [0,{},{}]
  holds I is halting
proof
  let I be Instruction of SCMPDS;
  assume I = [0,{},{}];
   then
A1: InsCode I = 0;
  let s be State of SCMPDS;
  thus Exec(I,s) = s by A1,Lm11;
end;
