Input TRS: 1: a(L(x)) -> L(a(x)) 2: R(a(x)) -> a(R(x)) 3: a(L(L(x))) -> a(L(R(x))) 4: R(R(a(x))) -> L(a(R(a(x)))) Number of strict rules: 4 Direct Order(PosReal,>,Poly) ... failed. Freezing ... failed. Dependency Pairs: #1: #R(a(x)) -> #a(R(x)) #2: #R(a(x)) -> #R(x) #3: #a(L(L(x))) -> #a(L(R(x))) #4: #a(L(L(x))) -> #R(x) #5: #a(L(x)) -> #a(x) #6: #R(R(a(x))) -> #a(R(a(x))) Number of SCCs: 1, DPs: 6, edges: 18 SCC { #1..6 } Removing DPs: Order(PosReal,>,Sum)... succeeded. a(x1) weight: x1 #R(x1) weight: (/ 3 8) + x1 R(x1) weight: (/ 1 4) + x1 L(x1) weight: (/ 1 4) + x1 #a(x1) weight: x1 Usable rules: { 1..4 } Removed DPs: #1 #4..6 Number of SCCs: 2, DPs: 2, edges: 2 SCC { #2 } Removing DPs: Order(PosReal,>,Sum)... succeeded. a(x1) weight: (/ 1 4) + x1 #R(x1) weight: (/ 3 4) + x1 R(x1) weight: (/ 1 4) + x1 L(x1) weight: (/ 1 4) #a(x1) weight: x1 Usable rules: { } Removed DPs: #2 Number of SCCs: 1, DPs: 1, edges: 1 SCC { #3 } Removing DPs: Order(PosReal,>,Sum)... Order(PosReal,>,Max)... QLPOpS... Order(PosReal,>,MaxSum)... QWPOpS(PosReal,>,MaxSum)... Order(PosReal,>,Sum-Sum; PosReal,≥,Sum-Sum)... Order(PosReal,>,Sum-Sum; NegReal,≥,Sum)... Order(PosReal,>,MaxSum-Sum; NegReal,≥,Sum)... failed. Removing edges: failed. Finding a loop... failed. MAYBE