Problem: g(c(),g(c(),x)) -> g(e(),g(d(),x)) g(d(),g(d(),x)) -> g(c(),g(e(),x)) g(e(),g(e(),x)) -> g(d(),g(c(),x)) f(g(x,y)) -> g(y,g(f(f(x)),a())) g(x,g(y,g(x,y))) -> g(a(),g(x,g(y,b()))) Proof: Bounds Processor: bound: 0 enrichment: match automaton: final states: {7,6} transitions: g0(3,1) -> 6* g0(3,3) -> 6* g0(3,5) -> 6* g0(4,2) -> 6* g0(4,4) -> 6* g0(5,1) -> 6* g0(5,3) -> 6* g0(5,5) -> 6* g0(1,2) -> 6* g0(1,4) -> 6* g0(2,1) -> 6* g0(2,3) -> 6* g0(2,5) -> 6* g0(3,2) -> 6* g0(3,4) -> 6* g0(4,1) -> 6* g0(4,3) -> 6* g0(4,5) -> 6* g0(5,2) -> 6* g0(5,4) -> 6* g0(1,1) -> 6* g0(1,3) -> 6* g0(1,5) -> 6* g0(2,2) -> 6* g0(2,4) -> 6* c0() -> 1* e0() -> 2* d0() -> 3* f0(5) -> 7* f0(2) -> 7* f0(4) -> 7* f0(1) -> 7* f0(3) -> 7* a0() -> 4* b0() -> 5* problem: Qed