cnf(add_equals_u_7,negated_conjecture, ( equalish(add(a,c),u) )). cnf(add_equals_v_8,negated_conjecture, ( equalish(add(d,b),v) )). cnf(less_or_equal_9,negated_conjecture, ( less_or_equal(a,b) )). cnf(less_or_equal_10,negated_conjecture, ( less_or_equal(c,d) )). cnf(not_less_or_equal_11,negated_conjecture, ( ~ less_or_equal(u,v) )).