Test auto/LB-GWR+R-A

LISA auto/LB-GWR+R-A
(*
 * Result: Sometimes
 * P0 GWR: Never->Sometimes: Power rel-acq does not provide write-to-read global transitivity
 *)
{
}
 P0              | P1               | P2            ;
 w[once] u0 3    | r[acquire] r1 x1 | w[once] v0 1  ;
 w[release] x1 1 | r[once] r2 v0    | f[mb]         ;
                 |                  | r[once] r2 u0 ;
Observed
    2:r2=0; 1:r2=0; 1:r1=1;