set i = (a,k1) >=0_goto k2;
InsCode ((a,k1) >=0_goto k2) = 6 by SCMPDS_2:18;
then (a,k1) >=0_goto k2 <> halt SCMPDS ;
hence (a,k1) >=0_goto k2 is No-StopCode ; :: thesis: verum