Term Rewriting System R:
[x]
app(f, app(g, x)) -> app(g, app(g, app(f, x)))
app(f, app(g, x)) -> app(g, app(g, app(g, x)))

Innermost Termination of R to be shown. 



   R
     ↳Dependency Pair Analysis



R contains the following Dependency Pairs:

APP(f, app(g, x)) -> APP(g, app(g, app(f, x)))
APP(f, app(g, x)) -> APP(g, app(f, x))
APP(f, app(g, x)) -> APP(f, x)
APP(f, app(g, x)) -> APP(g, app(g, app(g, x)))
APP(f, app(g, x)) -> APP(g, app(g, x))

Furthermore, R contains one SCC. 


   R
     ↳DPs
       →DP Problem 1
         ↳Polynomial Ordering


Dependency Pair:

APP(f, app(g, x)) -> APP(f, x)


Rules:


app(f, app(g, x)) -> app(g, app(g, app(f, x)))
app(f, app(g, x)) -> app(g, app(g, app(g, x)))


Strategy:

innermost




The following dependency pair can be strictly oriented:

APP(f, app(g, x)) -> APP(f, x)


There are no usable rules for innermost w.r.t. to the implicit AFS that need to be oriented.

Used ordering: Polynomial ordering with Polynomial interpretation:
  POL(g)=  0  
  POL(APP(x1, x2))=  x2  
  POL(f)=  0  
  POL(app(x1, x2))=  1 + x2  

resulting in one new DP problem. 



   R
     ↳DPs
       →DP Problem 1
         ↳Polo
           →DP Problem 2
             ↳Dependency Graph


Dependency Pair:


Rules:


app(f, app(g, x)) -> app(g, app(g, app(f, x)))
app(f, app(g, x)) -> app(g, app(g, app(g, x)))


Strategy:

innermost




Using the Dependency Graph resulted in no new DP problems.

Innermost Termination of R successfully shown.
Duration:
0:00 minutes