LISA Z3-floating-relacq (* Z3 variant with floating read *) { } P0 | P1 | P2 ; r[acquire] r0 x | w[once] y 1 | w[once] z 2 ; mov r1 (and r0 8) | w[release] z 1 | w[release] x 1 ; r[once] r2 y+r1 | | ; r[once] r3 z | | ; Observed z=2; 0:r3=2; 0:r2=0; 0:r0=1;