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
consider s being State of SCMPDS ;
(Exec (a := k1),s) . (IC SCMPDS ) = succ (IC s) by Th57;
hence not a := k1 is halting by Th76; :: thesis: verum