Term Rewriting System R:
[x, y, z, u]
:(:(:(:(C, x), y), z), u) -> :(:(x, z), :(:(:(x, y), z), u))

Termination of R to be shown. 



   R
     ↳Dependency Pair Analysis



R contains the following Dependency Pairs:

:'(:(:(:(C, x), y), z), u) -> :'(:(x, z), :(:(:(x, y), z), u))
:'(:(:(:(C, x), y), z), u) -> :'(x, z)
:'(:(:(:(C, x), y), z), u) -> :'(:(:(x, y), z), u)
:'(:(:(:(C, x), y), z), u) -> :'(:(x, y), z)
:'(:(:(:(C, x), y), z), u) -> :'(x, y)

Furthermore, R contains one SCC. 


   R
     ↳DPs
       →DP Problem 1
         ↳Remaining Obligation(s)




The following remains to be proven:
Dependency Pairs:

:'(:(:(:(C, x), y), z), u) -> :'(x, y)
:'(:(:(:(C, x), y), z), u) -> :'(:(x, y), z)
:'(:(:(:(C, x), y), z), u) -> :'(:(:(x, y), z), u)
:'(:(:(:(C, x), y), z), u) -> :'(x, z)
:'(:(:(:(C, x), y), z), u) -> :'(:(x, z), :(:(:(x, y), z), u))


Rule:


:(:(:(:(C, x), y), z), u) -> :(:(x, z), :(:(:(x, y), z), u))




Termination of R could not be shown.
Duration:
0:00 minutes