On improving efficiency of model checking through systematically ...

else false;
lr’= if l6 then l6r
else if l7 then l7r
else if lr then not lrs
else false;
ws’= if wl12 then wl12s
else if ws then not (wls2 or wls9)
else false;
wl2’ = if ws then wls2
else if wl2 then not wl23
else false;
wl3’ = if wl2 then wl23
else if wl3 then not wl34
else false;
wl4’= if wl3 then wl34
else if wl4 then not wl45
else false;
wl5’ = if wl4 then wl45
else if wl5 then not (wl56 or wl57)
else false;
wl6’ = if wl5 then wl56
else if wl6 then not wl68
else false;
wl7’ = if wl5 then wl57
else if wl7 then not wl78
else false;
wl8’ = if wl7 then wl78
else if wl6 then wl68
else if wl8 then not wl810
else false;
wl9’= if ws then wls9
else if wl9 then not wl910
else false;
wl10’= if wl9 then wl910
else if wl8 then wl810
else if wl10 then not wl1011
68