let a be Int-Location ; :: thesis: for s being State of SCM+FSA
for P being Instruction-Sequence of SCM+FSA
for i being parahalting keeping_0 Instruction of SCM+FSA
for j being parahalting Instruction of SCM+FSA holds (IExec ((i ';' j),P,s)) . a = (Exec (j,(Exec (i,(Initialized s))))) . a

let s be State of SCM+FSA; :: thesis: for P being Instruction-Sequence of SCM+FSA
for i being parahalting keeping_0 Instruction of SCM+FSA
for j being parahalting Instruction of SCM+FSA holds (IExec ((i ';' j),P,s)) . a = (Exec (j,(Exec (i,(Initialized s))))) . a

let P be Instruction-Sequence of SCM+FSA; :: thesis: for i being parahalting keeping_0 Instruction of SCM+FSA
for j being parahalting Instruction of SCM+FSA holds (IExec ((i ';' j),P,s)) . a = (Exec (j,(Exec (i,(Initialized s))))) . a

let i be parahalting keeping_0 Instruction of SCM+FSA; :: thesis: for j being parahalting Instruction of SCM+FSA holds (IExec ((i ';' j),P,s)) . a = (Exec (j,(Exec (i,(Initialized s))))) . a
let j be parahalting Instruction of SCM+FSA; :: thesis: (IExec ((i ';' j),P,s)) . a = (Exec (j,(Exec (i,(Initialized s))))) . a
set Mi = Macro i;
thus (IExec ((i ';' j),P,s)) . a = (IExec (((Macro i) ';' j),P,s)) . a
.= (Exec (j,(IExec ((Macro i),P,s)))) . a by Th7
.= (Exec (j,(Exec (i,(Initialized s))))) . a by Th6 ; :: thesis: verum