for P being Instruction-Sequence of SCMPDS
for s being 0 -started State of SCMPDS
for n, p0 being Element of NAT
for f being FinSequence of INT st p0 >= 3 & f is_FinSequence_on s,p0 & len f = n holds
( (IExec ((sum (n,p0)),P,s)) . (intpos 1) = Sum f & sum (n,p0) is parahalting )