theorem Th4: :: SCMFSA_9:22

for P being Instruction-Sequence of SCM+FSA
for s being State of SCM+FSA
for I being really-closed MacroInstruction of SCM+FSA
for a being read-write Int-Location st I is_halting_on s,P & s . a = 0 holds
( IC (Comput ((P +* (while=0 (a,I))),(Initialize s),((LifeSpan ((P +* I),(Initialize s))) + 2))) = 0 & ( for k being Nat st k <= (LifeSpan ((P +* I),(Initialize s))) + 2 holds
IC (Comput ((P +* (while=0 (a,I))),(Initialize s),k)) in dom (while=0 (a,I)) ) )