LISA auto/RR-G+RR-G (* * Result: Never * * Process 0 starts (t=100000). * * P0 advances one grace period (t=200000). * * P1 advances one grace period (t=300001). * * Process 0 start at t=100000, process 2 end at t=300001: Cycle forbidden. *) { } P0 | P1 | P2 ; r[once] r1 x0 | r[once] r1 x1 | w[once] x0 1 ; f[sync] | f[sync] | w[once] x1 1 ; r[once] r2 x1 | r[once] r2 x0 | ; Observed 1:r2=1; 1:r1=1; 0:r2=0; 0:r1=1; and 1:r2=1; 1:r1=0; 0:r2=0; 0:r1=1; and 1:r2=0; 1:r1=0; 0:r2=0; 0:r1=1;