YES Input TRS: 1: active(and(tt(),X)) -> mark(X) 2: active(plus(N,0())) -> mark(N) 3: active(plus(N,s(M))) -> mark(s(plus(N,M))) 4: mark(and(X1,X2)) -> active(and(mark(X1),X2)) 5: mark(tt()) -> active(tt()) 6: mark(plus(X1,X2)) -> active(plus(mark(X1),mark(X2))) 7: mark(0()) -> active(0()) 8: mark(s(X)) -> active(s(mark(X))) 9: and(mark(X1),X2) -> and(X1,X2) 10: and(X1,mark(X2)) -> and(X1,X2) 11: and(active(X1),X2) -> and(X1,X2) 12: and(X1,active(X2)) -> and(X1,X2) 13: plus(mark(X1),X2) -> plus(X1,X2) 14: plus(X1,mark(X2)) -> plus(X1,X2) 15: plus(active(X1),X2) -> plus(X1,X2) 16: plus(X1,active(X2)) -> plus(X1,X2) 17: s(mark(X)) -> s(X) 18: s(active(X)) -> s(X) Number of strict rules: 18 Direct POLO(bPol) ... removes: 1 2 s w: x1 + 28224 and w: 2 * x1 + x2 + 2 0 w: 17889 mark w: x1 plus w: x1 + x2 + 6879 active w: x1 tt w: 1 Number of strict rules: 16 Direct POLO(bPol) ... removes: 3 s w: x1 + 1 and w: x1 + x2 + 1 0 w: 12063 mark w: x1 plus w: x1 + 2 * x2 + 6812 active w: x1 tt w: 1 Number of strict rules: 15 Direct POLO(bPol) ... failed. Uncurrying ... failed. Dependency Pairs: #1: #mark(plus(X1,X2)) -> #plus(mark(X1),mark(X2)) #2: #mark(plus(X1,X2)) -> #mark(X1) #3: #mark(plus(X1,X2)) -> #mark(X2) #4: #plus(mark(X1),X2) -> #plus(X1,X2) #5: #and(mark(X1),X2) -> #and(X1,X2) #6: #and(active(X1),X2) -> #and(X1,X2) #7: #and(X1,active(X2)) -> #and(X1,X2) #8: #plus(X1,mark(X2)) -> #plus(X1,X2) #9: #and(X1,mark(X2)) -> #and(X1,X2) #10: #s(mark(X)) -> #s(X) #11: #plus(X1,active(X2)) -> #plus(X1,X2) #12: #mark(s(X)) -> #s(mark(X)) #13: #mark(s(X)) -> #mark(X) #14: #plus(active(X1),X2) -> #plus(X1,X2) #15: #mark(and(X1,X2)) -> #and(mark(X1),X2) #16: #mark(and(X1,X2)) -> #mark(X1) #17: #s(active(X)) -> #s(X) Number of SCCs: 4, DPs: 14 SCC { #10 #17 } POLO(Sum)... succeeded. s w: 0 and w: 0 #plus w: 0 #mark w: 0 0 w: 0 #s w: x1 mark w: x1 + 1 plus w: 0 active w: x1 + 1 tt w: 0 #and w: 0 USABLE RULES: { } Removed DPs: #10 #17 Number of SCCs: 3, DPs: 12 SCC { #2 #3 #13 #16 } POLO(Sum)... succeeded. s w: x1 + 1 and w: x1 + 1 #plus w: 0 #mark w: x1 0 w: 0 #s w: 0 mark w: 1 plus w: x1 + x2 + 1 active w: 1 tt w: 0 #and w: 0 USABLE RULES: { } Removed DPs: #2 #3 #13 #16 Number of SCCs: 2, DPs: 8 SCC { #4 #8 #11 #14 } POLO(Sum)... succeeded. s w: 1 and w: 1 #plus w: x1 + x2 #mark w: 0 0 w: 0 #s w: 0 mark w: x1 + 1 plus w: 1 active w: x1 + 1 tt w: 0 #and w: 0 USABLE RULES: { } Removed DPs: #4 #8 #11 #14 Number of SCCs: 1, DPs: 4 SCC { #5..7 #9 } POLO(Sum)... succeeded. s w: 1 and w: 1 #plus w: 0 #mark w: 0 0 w: 0 #s w: 0 mark w: x1 + 1 plus w: 1 active w: x1 + 1 tt w: 0 #and w: x1 USABLE RULES: { } Removed DPs: #5 #6 Number of SCCs: 1, DPs: 2 SCC { #7 #9 } POLO(Sum)... succeeded. s w: 1 and w: 1 #plus w: 0 #mark w: 0 0 w: 0 #s w: 0 mark w: x1 + 1 plus w: 1 active w: x1 + 1 tt w: 0 #and w: x2 USABLE RULES: { } Removed DPs: #7 #9 Number of SCCs: 0, DPs: 0