let k1 be Integer; :: thesis: for a being Int_position holds not a := k1 is halting
let a be Int_position; :: thesis: not a := k1 is halting
set s = the State of SCMPDS;
(Exec ((a := k1), the State of SCMPDS)) . (IC ) = (IC the State of SCMPDS) + 1 by Th42;
hence not a := k1 is halting by Th60; :: thesis: verum