RISCV LR-SC-diff-loc4 "Atomicity Axiom: [..] then 's' must precede 'w' in the global memory order [..]" { 0:x6=x; 0:x8=y; 1:x6=y; 1:x8=z; 1:x3=x; } P0 | P1 ; lw x5,0(x6) | lw x5,0(x6) ; fence rw,rw | ori x7,x0,1 ; ori x7,x0,1 | sw.rl x7,0(x8) ; sw x7,0(x8) | lr.w x9,0(x8) ; | ori x1,x0,1 ; | sc.w x2,x1,0(x3) ; ~exists (x=1 /\ 0:x5=1 /\ 1:x5=1 /\ 1:x9=1 /\ 1:x2=0)