let a, b be Data-Location ; for il being Element of NAT holds NIC (SubFrom a,b),il = {(succ il)}
let il be Element of NAT ; NIC (SubFrom a,b),il = {(succ il)}
set i = SubFrom a,b;
for s being State of SCM st IC s = il & s . il = SubFrom a,b holds
(Exec (SubFrom a,b),s) . (IC SCM ) = succ (IC s)
by AMI_3:10;
hence
NIC (SubFrom a,b),il = {(succ il)}
by Lm4; verum