self.difference2 = And(Ge(x + y - 4, 0), Ge(-x + 3, 0), Ge(-y + 3, 0))
self.lexmin = And(Eq(y, 0), Eq(x, 0))
self.lexmax = And(Eq(y - 2, 0), Eq(x - 2, 0))
self.difference2 = And(Ge(x + y - 4, 0), Ge(-x + 3, 0), Ge(-y + 3, 0))
self.lexmin = And(Eq(y, 0), Eq(x, 0))
self.lexmax = And(Eq(y - 2, 0), Eq(x - 2, 0))