MAYBE
Time: 0.001195
TRS:
 {cond(true(), x, y) -> cond(gr(x, y), p x, s y),
        gr(s x, s y) -> gr(x, y),
        gr(s x, 0()) -> true(),
          gr(0(), x) -> false(),
               p s x -> x,
               p 0() -> 0()}
 DP:
  DP:
   {cond#(true(), x, y) -> cond#(gr(x, y), p x, s y),
    cond#(true(), x, y) -> gr#(x, y),
    cond#(true(), x, y) -> p# x,
          gr#(s x, s y) -> gr#(x, y)}
  TRS:
  {cond(true(), x, y) -> cond(gr(x, y), p x, s y),
         gr(s x, s y) -> gr(x, y),
         gr(s x, 0()) -> true(),
           gr(0(), x) -> false(),
                p s x -> x,
                p 0() -> 0()}
  UR:
   {gr(s x, s y) -> gr(x, y),
    gr(s x, 0()) -> true(),
      gr(0(), x) -> false(),
           p s x -> x,
           p 0() -> 0(),
         a(z, w) -> z,
         a(z, w) -> w}
   EDG:
    {(cond#(true(), x, y) -> gr#(x, y), gr#(s x, s y) -> gr#(x, y))
     (cond#(true(), x, y) -> cond#(gr(x, y), p x, s y), cond#(true(), x, y) -> p# x)
     (cond#(true(), x, y) -> cond#(gr(x, y), p x, s y), cond#(true(), x, y) -> gr#(x, y))
     (cond#(true(), x, y) -> cond#(gr(x, y), p x, s y), cond#(true(), x, y) -> cond#(gr(x, y), p x, s y))
     (gr#(s x, s y) -> gr#(x, y), gr#(s x, s y) -> gr#(x, y))}
    STATUS:
     arrows: 0.687500
     SCCS (2):
      Scc:
       {cond#(true(), x, y) -> cond#(gr(x, y), p x, s y)}
      Scc:
       {gr#(s x, s y) -> gr#(x, y)}
      
      SCC (1):
       Strict:
        {cond#(true(), x, y) -> cond#(gr(x, y), p x, s y)}
       Weak:
       {cond(true(), x, y) -> cond(gr(x, y), p x, s y),
              gr(s x, s y) -> gr(x, y),
              gr(s x, 0()) -> true(),
                gr(0(), x) -> false(),
                     p s x -> x,
                     p 0() -> 0()}
       Open
      
      SCC (1):
       Strict:
        {gr#(s x, s y) -> gr#(x, y)}
       Weak:
       {cond(true(), x, y) -> cond(gr(x, y), p x, s y),
              gr(s x, s y) -> gr(x, y),
              gr(s x, 0()) -> true(),
                gr(0(), x) -> false(),
                     p s x -> x,
                     p 0() -> 0()}
       Open