MAYBE

Problem:
 +(x,0()) -> x
 +(x,s(y)) -> s(+(x,y))
 +(0(),y) -> y
 +(s(x),y) -> s(+(x,y))
 +(x,+(y,z)) -> +(+(x,y),z)
 f(g(f(x))) -> f(h(s(0()),x))
 f(g(h(x,y))) -> f(h(s(x),y))
 f(h(x,h(y,z))) -> f(h(+(x,y),z))

Proof:
 DP Processor:
  DPs:
   +#(x,s(y)) -> +#(x,y)
   +#(s(x),y) -> +#(x,y)
   +#(x,+(y,z)) -> +#(x,y)
   +#(x,+(y,z)) -> +#(+(x,y),z)
   f#(g(f(x))) -> f#(h(s(0()),x))
   f#(g(h(x,y))) -> f#(h(s(x),y))
   f#(h(x,h(y,z))) -> +#(x,y)
   f#(h(x,h(y,z))) -> f#(h(+(x,y),z))
  TRS:
   +(x,0()) -> x
   +(x,s(y)) -> s(+(x,y))
   +(0(),y) -> y
   +(s(x),y) -> s(+(x,y))
   +(x,+(y,z)) -> +(+(x,y),z)
   f(g(f(x))) -> f(h(s(0()),x))
   f(g(h(x,y))) -> f(h(s(x),y))
   f(h(x,h(y,z))) -> f(h(+(x,y),z))
  CDG Processor:
   DPs:
    +#(x,s(y)) -> +#(x,y)
    +#(s(x),y) -> +#(x,y)
    +#(x,+(y,z)) -> +#(x,y)
    +#(x,+(y,z)) -> +#(+(x,y),z)
    f#(g(f(x))) -> f#(h(s(0()),x))
    f#(g(h(x,y))) -> f#(h(s(x),y))
    f#(h(x,h(y,z))) -> +#(x,y)
    f#(h(x,h(y,z))) -> f#(h(+(x,y),z))
   TRS:
    +(x,0()) -> x
    +(x,s(y)) -> s(+(x,y))
    +(0(),y) -> y
    +(s(x),y) -> s(+(x,y))
    +(x,+(y,z)) -> +(+(x,y),z)
    f(g(f(x))) -> f(h(s(0()),x))
    f(g(h(x,y))) -> f(h(s(x),y))
    f(h(x,h(y,z))) -> f(h(+(x,y),z))
   graph:
    f#(h(x,h(y,z))) -> +#(x,y) -> +#(s(x),y) -> +#(x,y)
    +#(s(x),y) -> +#(x,y) -> +#(s(x),y) -> +#(x,y)
    +#(x,s(y)) -> +#(x,y) -> +#(s(x),y) -> +#(x,y)
    +#(x,+(y,z)) -> +#(+(x,y),z) -> +#(s(x),y) -> +#(x,y)
    +#(x,+(y,z)) -> +#(x,y) -> +#(s(x),y) -> +#(x,y)
   SCC Processor:
    #sccs: 1
    #rules: 1
    #arcs: 5/64
    DPs:
     +#(s(x),y) -> +#(x,y)
    TRS:
     +(x,0()) -> x
     +(x,s(y)) -> s(+(x,y))
     +(0(),y) -> y
     +(s(x),y) -> s(+(x,y))
     +(x,+(y,z)) -> +(+(x,y),z)
     f(g(f(x))) -> f(h(s(0()),x))
     f(g(h(x,y))) -> f(h(s(x),y))
     f(h(x,h(y,z))) -> f(h(+(x,y),z))
    Open