Termination proof
  
1: switching to dependency pairs
        The following set of initial dependency pairs has been identified.
        
| 
            *#(
                *(
                    x
                  , 
                    y
                  )
              , 
                z
              )
           | 
 →  | 
            *#(
                x
              , 
                *(
                    y
                  , 
                    z
                  )
              )
           | 
| 
            *#(
                *(
                    x
                  , 
                    y
                  )
              , 
                z
              )
           | 
 →  | 
            *#(
                y
              , 
                z
              )
           | 
1.1: reduction pair processor
        Using the following reduction pair
        
        
                Linear polynomial
             
            interpretation over 
            
                the naturals
            
| 
                            [*#
                (x1, x2)
            ]
                         | 
 =  | 
              
                  2
                x1 + 
                  2
                x2
             | 
| 
                            [i
                (x1)
            ]
                         | 
 =  | 
              
                  1
                
             | 
| 
                            [1]
                         | 
 =  | 
              
                  0
                
             | 
| 
                            [0]
                         | 
 =  | 
              
                  2
                
             | 
| 
                            [*
                (x1, x2)
            ]
                         | 
 =  | 
              x1 + x2
                +                
            
                  2
                
             | 
| 
                        [f(x1, ..., xn)]
                     | 
 =  | 
x1 +  ... +  xn + 1 
                     | 
                         for all other symbols f of arity n
                     | 
              
        one remains with the following pair(s).
        
| 
              *#(
                  *(
                      x
                    , 
                      y
                    )
                , 
                  z
                )
             | 
 →  | 
              *#(
                  x
                , 
                  *(
                      y
                    , 
                      z
                    )
                )
             | 
1.1.1: reduction pair processor
        Using the following reduction pair
        
          
                Linear polynomial
             
            interpretation over 
            
                the naturals
            
| 
                            [*#
                (x1, x2)
            ]
                         | 
 =  | 
                
                    2
                  x1
               | 
| 
                            [i
                (x1)
            ]
                         | 
 =  | 
                
                    2
                  
               | 
| 
                            [1]
                         | 
 =  | 
                
                    3
                  
               | 
| 
                            [0]
                         | 
 =  | 
                
                    0
                  
               | 
| 
                            [*
                (x1, x2)
            ]
                         | 
 =  | 
                x1 + x2
                +                
            
                    2
                  
               | 
| 
                        [f(x1, ..., xn)]
                     | 
 =  | 
x1 +  ... +  xn + 1 
                     | 
                         for all other symbols f of arity n
                     | 
                
        one remains with the following pair(s).
        1.1.1.1: P is empty 
All dependency pairs have been removed.