Run R+po+isb in model, using armmem
ARM R+po+isb "PodWW Wse ISBdWR Fre" Cycle=Fre PodWW Wse ISBdWR { %x0=x; %y0=y; %y1=y; %x1=x; } P0 | P1 ; MOV R0, #1 | MOV R0, #2 ; STR R0, [%x0] | STR R0, [%y1] ; MOV R1, #1 | ISB ; STR R1, [%y0] | LDR R1, [%x1] ; exists (y=2 /\ 1:R1=0)