set i = MultBy (a,k1,b,k2);
A3: InsCode (halt SCMPDS) = 0 by SCMPDS_2:12, SCMPDS_2:81;
InsCode (MultBy (a,k1,b,k2)) = 11 by SCMPDS_2:23;
hence MultBy (a,k1,b,k2) is No-StopCode by A3, COMPOS_1:def 24; :: thesis: verum