Test IRWIW+poonceonce+poacquireonce+OnceRelease

LISA IRWIW+poonceonce+poacquireonce+OnceRelease
"RfeOnceOnce PodRWOnceOnce WseOnceRelease RfeReleaseAcquire PodRWAcquireOnce WseOnceOnce"
Cycle=PodRWAcquireOnce WseOnceOnce RfeOnceOnce PodRWOnceOnce WseOnceRelease RfeReleaseAcquire
Relax=WseOnceRelease RfeReleaseAcquire
Safe=PodRWAcquireOnce RfeOnceOnce WseOnceOnce PodRWOnceOnce
Prefetch=1:x=F,1:y=W,3:y=F,3:x=W
Com=Rf Ws Rf Ws
Orig=RfeOnceOnce PodRWOnceOnce WseOnceRelease RfeReleaseAcquire PodRWAcquireOnce WseOnceOnce
{
}
 P0          | P1           | P2             | P3              ;
 w[once] x 2 | r[once] r0 x | w[release] y 2 | r[acquire] r0 y ;
             | w[once] y 1  |                | w[once] x 1     ;
Observed
    y=2; x=2; 3:r0=2; 1:r0=1;
and y=2; x=1; 3:r0=2; 1:r0=1;
and y=2; x=2; 3:r0=1; 1:r0=1;
and y=1; x=2; 3:r0=1; 1:r0=1;
and y=2; x=1; 3:r0=1; 1:r0=1;
and y=1; x=1; 3:r0=1; 1:r0=1;