Input TRS: 1: digits() -> d(|0|()) 2: d(x) -> if(le(x,s(s(s(s(s(s(s(s(s(|0|())))))))))),x) 3: if(true(),x) -> cons(x,d(s(x))) 4: if(false(),x) -> nil() 5: le(|0|(),y) -> true() 6: le(s(x),|0|()) -> false() 7: le(s(x),s(y)) -> le(x,y) Number of strict rules: 7 Direct Order(PosReal,>,Poly) ... failed. Freezing ... failed. Dependency Pairs: #1: #d(x) -> #if(le(x,s(s(s(s(s(s(s(s(s(|0|())))))))))),x) #2: #d(x) -> #le(x,s(s(s(s(s(s(s(s(s(|0|())))))))))) #3: #le(s(x),s(y)) -> #le(x,y) #4: #if(true(),x) -> #d(s(x)) #5: #digits() -> #d(|0|()) Number of SCCs: 2, DPs: 3, edges: 3 SCC { #3 } Removing DPs: Order(PosReal,>,Sum)... succeeded. |0|() weight: 0 le(x1,x2) weight: 0 d(x1) weight: 0 s(x1) weight: (/ 1 2) + x1 #le(x1,x2) weight: x2 false() weight: 0 #digits() weight: 0 true() weight: 0 if(x1,x2) weight: 0 nil() weight: 0 #d(x1) weight: 0 digits() weight: 0 cons(x1,x2) weight: 0 #if(x1,x2) weight: 0 Usable rules: { } Removed DPs: #3 Number of SCCs: 1, DPs: 2, edges: 2 SCC { #1 #4 } 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)... succeeded. |0|() weight: 0; (- (/ 1 64)) le(x1,x2) weight: max{0, (/ 3 64) + x2_1 + x1_2}; (- (/ 1 64)) d(x1) weight: 0; 0 s(x1) weight: max{0, (/ 1 16) + x1_1}; (- (/ 1 16)) + x1_2 #le(x1,x2) weight: 0; 0 false() weight: 0; (- (/ 1 64)) #digits() weight: 0; 0 true() weight: (/ 1 32); (- (/ 1 64)) if(x1,x2) weight: 0; 0 nil() weight: 0; 0 #d(x1) weight: max{0, (/ 39 64) + x1_2}; (- (/ 1 64)) + x1_2 digits() weight: 0; 0 cons(x1,x2) weight: 0; 0 #if(x1,x2) weight: max{0, (- (/ 1 64)) + x1_1, (/ 9 16) + x2_2}; x2_2 + x1_2 Usable rules: { 5..7 } Removed DPs: #4 Number of SCCs: 0, DPs: 0, edges: 0 YES