C CoRR+poonceonce+Once

{}

P0(int *x)
{
	WRITE_ONCE(*x, 1);
}

P1(int *x)
{
	int r0;
	int r1;

	r0 = READ_ONCE(*x);
	r1 = READ_ONCE(*x);
}

exists (1:r0=1 /\ 1:r1=0)