Input TRS: 1: minus(x,0()) -> x 2: minus(s(x),s(y)) -> minus(x,y) 3: quot(0(),s(y)) -> 0() 4: quot(s(x),s(y)) -> s(quot(minus(x,y),s(y))) 5: plus(0(),y) -> y 6: plus(s(x),y) -> s(plus(x,y)) 7: plus(minus(x,s(0())),minus(y,s(s(z)))) -> plus(minus(y,s(s(z))),minus(x,s(0()))) 8: plus(plus(x,s(0())),plus(y,s(s(z)))) -> plus(plus(y,s(s(z))),plus(x,s(0()))) Number of strict rules: 8 Direct Order(PosReal,>,Poly) ... failed. Freezing ... failed. Dependency Pairs: #1: #minus(s(x),s(y)) -> #minus(x,y) #2: #plus(s(x),y) -> #plus(x,y) #3: #plus(minus(x,s(0())),minus(y,s(s(z)))) -> #plus(minus(y,s(s(z))),minus(x,s(0()))) #4: #plus(plus(x,s(0())),plus(y,s(s(z)))) -> #plus(plus(y,s(s(z))),plus(x,s(0()))) #5: #quot(s(x),s(y)) -> #quot(minus(x,y),s(y)) #6: #quot(s(x),s(y)) -> #minus(x,y) Number of SCCs: 3, DPs: 5, edges: 11 SCC { #1 } Removing DPs: Order(PosReal,>,Sum)... succeeded. s(x1) weight: (/ 1 2) + x1 minus(x1,x2) weight: 0 #plus(x1,x2) weight: 0 0() weight: 0 quot(x1,x2) weight: 0 #minus(x1,x2) weight: x2 plus(x1,x2) weight: 0 #quot(x1,x2) weight: 0 Usable rules: { } Removed DPs: #1 Number of SCCs: 2, DPs: 4, edges: 10 SCC { #5 } Removing DPs: Order(PosReal,>,Sum)... succeeded. s(x1) weight: (/ 1 2) + x1 minus(x1,x2) weight: (/ 1 4) + x1 #plus(x1,x2) weight: 0 0() weight: 0 quot(x1,x2) weight: 0 #minus(x1,x2) weight: 0 plus(x1,x2) weight: 0 #quot(x1,x2) weight: x1 Usable rules: { 1 2 } Removed DPs: #5 Number of SCCs: 1, DPs: 3, edges: 9 SCC { #2..4 } Removing DPs: Order(PosReal,>,Sum)... succeeded. s(x1) weight: (/ 1 4) + x1 minus(x1,x2) weight: (/ 1 4) + x1 #plus(x1,x2) weight: x1 + x2 0() weight: 0 quot(x1,x2) weight: 0 #minus(x1,x2) weight: 0 plus(x1,x2) weight: (/ 1 4) + x1 + x2 #quot(x1,x2) weight: x1 Usable rules: { 1 2 5..8 } Removed DPs: #2 Number of SCCs: 1, DPs: 2, edges: 4 SCC { #3 #4 } Removing DPs: Order(PosReal,>,Sum)... Order(PosReal,>,Max)... QLPOpS... Order(PosReal,>,MaxSum)... QWPOpS(PosReal,>,MaxSum)... Order(PosReal,>,Sum-Sum; PosReal,≥,Sum-Sum)... succeeded. s(x1) weight: (/ 1 4) + x1_1; x1_2 minus(x1,x2) weight: (/ 1 8) + x1_1 + x1_2; x2_1 + x1_1 + x1_2 #plus(x1,x2) weight: x2_2 + x1_1; 0 0() weight: (/ 1 8); (/ 1 8) quot(x1,x2) weight: 0; 0 #minus(x1,x2) weight: 0; 0 plus(x1,x2) weight: (/ 1 8) + x2_1 + x2_2 + x1_1 + x1_2; (/ 1 8) + x2_1 + x2_2 + x1_1 + x1_2 #quot(x1,x2) weight: 0; 0 Usable rules: { 1 2 5..8 } Removed DPs: #3 Number of SCCs: 1, DPs: 1, edges: 1 SCC { #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)... failed. Removing edges: failed. Finding a loop... failed. MAYBE