Input TRS:
    1: rev(ls) -> r1(ls,empty())
    2: r1(empty(),a) -> a
    3: r1(cons(x,k),a) -> r1(k,cons(x,a))
Number of Rules: 3
Direct QTKBOS ... orients all.
	I(empty) = 1
	I(cons) = x1 + x2 + 1	sigma(cons) = [1,2]
	I(r1) = 2 * x1 + x2	sigma(r1) = [2,1]
	I(rev) = 3 * x1	sigma(rev) = [1]
    PREC: rev > empty = cons = r1
Number of Rules: 0