YES Input TRS: 1: topB(i,N1(),y) -> topA(1(),T1(),y) 2: topA(i,x,N2()) -> topB(0(),x,T2()) 3: topB(i,S1(),y) -> topA(i,N1(),y) 4: topA(i,x,S2()) -> topB(i,x,N2()) 5: topA(i,N1(),T2()) -> topB(i,N1(),S2()) 6: topA(1(),T1(),T2()) -> topB(1(),T1(),S2()) 7: topA(i,N1(),y) ->= topA(1(),T1(),y) 8: topB(i,x,N2()) ->= topB(0(),x,T2()) 9: topA(i,S1(),y) ->= topA(i,N1(),y) 10: topB(i,x,S2()) ->= topB(i,x,N2()) 11: topB(i,N1(),T2()) ->= topB(i,N1(),S2()) 12: topB(1(),T1(),T2()) ->= topB(1(),T1(),S2()) Number of strict rules: 6 Direct POLO(bPol) ... removes: 4 1 3 5 7 9 6 2 1 w: 1 T1 w: 1 topB w: x1 + 2 * x2 + x3 S1 w: 4 T2 w: 2998 0 w: 0 topA w: x1 + 2 * x2 + x3 + 1 N2 w: 2998 N1 w: 3 S2 w: 2998 Number of strict rules: 0