let f be FinSeq-Location ; :: thesis: for s being State of SCM+FSA
for I being parahalting keeping_0 Program of SCM+FSA
for J being parahalting Program of SCM+FSA holds (IExec ((I ';' J),s)) . f = (IExec (J,(IExec (I,s)))) . f
let s be State of SCM+FSA; :: thesis: for I being parahalting keeping_0 Program of SCM+FSA
for J being parahalting Program of SCM+FSA holds (IExec ((I ';' J),s)) . f = (IExec (J,(IExec (I,s)))) . f
let I be parahalting keeping_0 Program of SCM+FSA; :: thesis: for J being parahalting Program of SCM+FSA holds (IExec ((I ';' J),s)) . f = (IExec (J,(IExec (I,s)))) . f
let J be parahalting Program of SCM+FSA; :: thesis: (IExec ((I ';' J),s)) . f = (IExec (J,(IExec (I,s)))) . f
A1: not f in dom (Start-At (((IC (IExec (J,(IExec (I,s))))) + (card I)),SCM+FSA)) by SCMFSA6B:10;
IExec ((I ';' J),s) = (IExec (J,(IExec (I,s)))) +* (Start-At (((IC (IExec (J,(IExec (I,s))))) + (card I)),SCM+FSA)) by SCMFSA6B:44;
hence (IExec ((I ';' J),s)) . f = (IExec (J,(IExec (I,s)))) . f by A1, FUNCT_4:12; :: thesis: verum