Test RWC+po+isb

Run RWC+po+isb in model, using armmem

ARM RWC+po+isb
"Rfe PodRR Fre ISBdWR Fre"
Cycle=Rfe PodRR Fre ISBdWR Fre
{
%x0=x;
%x1=x; %y1=y;
%y2=y; %x2=x;
}
 P0            | P1            | P2            ;
 MOV R0, #1    | LDR R0, [%x1] | MOV R0, #1    ;
 STR R0, [%x0] | LDR R1, [%y1] | STR R0, [%y2] ;
               |               | ISB           ;
               |               | LDR R1, [%x2] ;
exists
(1:R0=1 /\ 1:R1=0 /\ 2:R1=0)