MAYBE
Input TRS:
      1: a(a(x1)) -> b(a(c(b(x1))))
      2: b(b(x1)) -> a(a(x1))
      3: c(a(x1)) -> x1
Number of strict rules: 3
Direct POLO(bPol) ... failed.
Uncurrying ... failed.
Dependency Pairs:
     #1: #b(b(x1)) -> #a(a(x1))
     #2: #b(b(x1)) -> #a(x1)
     #3: #a(a(x1)) -> #b(a(c(b(x1))))
     #4: #a(a(x1)) -> #a(c(b(x1)))
     #5: #a(a(x1)) -> #c(b(x1))
     #6: #a(a(x1)) -> #b(x1)
Number of SCCs: 1, DPs: 5
  SCC { #1..4 #6 }
POLO(Sum)... POLO(max)... QLPOS... POLO(mSum)... succeeded.
      a 	w: max(x1 + 2439, 0)
      b 	w: max(x1 + 2439, 0)
      c 	w: max(x1 - 2439, 0)
      #c 	w: 0
      #a 	w: max(x1 - 1, 0)
      #b 	w: max(x1 - 1, 0)
    USABLE RULES: { 1..3 }
    Removed DPs: #2 #4 #6
Number of SCCs: 1, DPs: 2
  SCC { #1 #3 }
POLO(Sum)... POLO(max)... QLPOS... POLO(mSum)... QWPOpS(mSum)... Mat2b... failed.
Finding a loop...  failed.