YES Input TRS: 1: minus(minus(x)) -> x 2: minus(+(x,y)) -> *(minus(minus(minus(x))),minus(minus(minus(y)))) 3: minus(*(x,y)) -> +(minus(minus(minus(x))),minus(minus(minus(y)))) 4: f(minus(x)) -> minus(minus(minus(f(x)))) Number of strict rules: 4 Direct POLO(bPol) ... failed. Uncurrying ... failed. Dependency Pairs: #1: #minus(+(x,y)) -> #minus(minus(minus(x))) #2: #minus(+(x,y)) -> #minus(minus(x)) #3: #minus(+(x,y)) -> #minus(x) #4: #minus(+(x,y)) -> #minus(minus(minus(y))) #5: #minus(+(x,y)) -> #minus(minus(y)) #6: #minus(+(x,y)) -> #minus(y) #7: #minus(*(x,y)) -> #minus(minus(minus(x))) #8: #minus(*(x,y)) -> #minus(minus(x)) #9: #minus(*(x,y)) -> #minus(x) #10: #minus(*(x,y)) -> #minus(minus(minus(y))) #11: #minus(*(x,y)) -> #minus(minus(y)) #12: #minus(*(x,y)) -> #minus(y) #13: #f(minus(x)) -> #minus(minus(minus(f(x)))) #14: #f(minus(x)) -> #minus(minus(f(x))) #15: #f(minus(x)) -> #minus(f(x)) #16: #f(minus(x)) -> #f(x) Number of SCCs: 2, DPs: 13 SCC { #16 } POLO(Sum)... succeeded. minus w: x1 + 1 f w: 0 #f w: x1 #minus w: 0 + w: 0 * w: 0 USABLE RULES: { } Removed DPs: #16 Number of SCCs: 1, DPs: 12 SCC { #1..12 } POLO(Sum)... succeeded. minus w: x1 f w: 0 #f w: 0 #minus w: x1 + w: x1 + x2 + 21239 * w: x1 + x2 + 21239 USABLE RULES: { 1..3 } Removed DPs: #1..12 Number of SCCs: 0, DPs: 0