MAYBE Time: 0.011 Problem: Equations: TRS: eqC(x,x) -> true() not(eqC(x,y)) -> neqC(x,y) not(neqC(x,y)) -> eqC(x,y) not(true()) -> false() not(false()) -> true() not(not(x)) -> x not(and(x,y)) -> or(not(x),not(y)) not(or(x,y)) -> and(not(x),not(y)) neqC(x,x) -> false() or(and(x,y),z) -> and(or(x,z),or(y,z)) or(x,x) -> x or(x,true()) -> true() or(x,false()) -> x and(x,x) -> x and(x,true()) -> x and(x,false()) -> false() and(x,or(x,y)) -> x Proof: Open