for P1, P2 being Instruction-Sequence of SCM+FSA
for s1, s2 being State of SCM+FSA
for I being really-closed Program of SCM+FSA st s1 . (intloc 0) = 1 & I is_halting_on s1,P1 & ( for a being read-write Int-Location holds s1 . a = s2 . a ) & ( for f being FinSeq-Location holds s1 . f = s2 . f ) holds
DataPart (IExec (I,P1,s1)) = DataPart (IExec (I,P2,s2))