C MP+pooncerelease+poacquireonce
{}
P0(int *x, int *y)
{
WRITE_ONCE(*x, 1);
smp_store_release(y, 1);
}
P1(int *x, int *y)
int r0;
int r1;
r0 = smp_load_acquire(y);
r1 = READ_ONCE(*x);
exists (1:r0=1 /\ 1:r1=0)