set i = MultBy (a,k1,b,k2);
A3: InsCode (halt SCMPDS) = 0 by RECDEF_2:def 1;
InsCode (MultBy (a,k1,b,k2)) = 11 by SCMPDS_2:23;
then MultBy (a,k1,b,k2) <> halt SCMPDS by A3;
hence MultBy (a,k1,b,k2) is No-StopCode by COMPOS_0:def 12; :: thesis: verum