theorem
  for s being State of SCMPDS,I being Program of SCMPDS,a being
  Int_position, i being Integer,n be Nat st s.DataLoc(s.a,i) <= 0
  holds IC IExec(for-down(a,i,n,I),P,Initialize s) = card I + 3
proof
  let s be State of SCMPDS,I be Program of SCMPDS,a be Int_position, i be
  Integer,n be Nat;
  assume s.DataLoc(s.a,i) <= 0;
  then IExec(for-down(a,i,n,I),P,Initialize s)
   =s +* Start-At((card I+3),SCMPDS) by Th43;
  hence thesis by FUNCT_4:113;
end;
