let il be Element of NAT ; for a, b being Int-Location holds NIC ((AddTo (a,b)),il) = {(succ il)}
let a, b be Int-Location ; NIC ((AddTo (a,b)),il) = {(succ il)}
set i = AddTo (a,b);
for s being State of SCM+FSA st IC s = il holds
(Exec ((AddTo (a,b)),s)) . (IC SCM+FSA) = succ (IC s)
by SCMFSA_2:90;
hence
NIC ((AddTo (a,b)),il) = {(succ il)}
by Lm5; verum