Test IRRWIW+poacquireonce+pooncerelease+OnceOnce

LISA IRRWIW+poacquireonce+pooncerelease+OnceOnce
"RfeOnceAcquire PodRRAcquireOnce FreOnceOnce RfeOnceOnce PodRWOnceRelease WseReleaseOnce"
Cycle=PodRRAcquireOnce FreOnceOnce RfeOnceOnce PodRWOnceRelease WseReleaseOnce RfeOnceAcquire
Relax=RfeOnceAcquire WseReleaseOnce
Safe=PodRRAcquireOnce RfeOnceOnce FreOnceOnce PodRWOnceRelease
Prefetch=1:x=F,1:y=T,3:y=F,3:x=W
Com=Rf Fr Rf Ws
Orig=RfeOnceAcquire PodRRAcquireOnce FreOnceOnce RfeOnceOnce PodRWOnceRelease WseReleaseOnce
{
}
 P0          | P1              | P2          | P3             ;
 w[once] x 2 | r[acquire] r0 x | w[once] y 1 | r[once] r0 y   ;
             | r[once] r1 y    |             | w[release] x 1 ;
Observed
    x=2; 3:r0=1; 1:r1=0; 1:r0=2;