Test auto/LB-LRW+O-O+OB-O+OB-O+OB-OB

LISA auto/LB-LRW+O-O+OB-O+OB-O+OB-OB
(*
 * Result: Sometimes
 * P0 LRW,O: Never->Sometimes: No ordering
 * P0-P1 rf O-O: Note lack of C11 guarantee, no synchronizes-with
 *)
{
}
 P0            | P1            | P2            | P3            | P4            ;
 r[once] r1 u0 | r[once] r1 x1 | r[once] r1 x2 | r[once] r1 x3 | r[once] r1 x4 ;
 w[once] x1 1  | f[mb]         | f[mb]         | f[mb]         | f[mb]         ;
               | w[once] x2 1  | w[once] x3 1  | w[once] x4 1  | w[once] u0 1  ;
Observed
    4:r1=1; 3:r1=1; 2:r1=1; 1:r1=1; 0:r1=1;