MAYBE Problem: f(true(),x,y,z) -> f(gt(x,plus(y,z)),x,s(y),z) f(true(),x,y,z) -> f(gt(x,plus(y,z)),x,y,s(z)) plus(n,0()) -> n plus(n,s(m)) -> s(plus(n,m)) gt(0(),v) -> false() gt(s(u),0()) -> true() gt(s(u),s(v)) -> gt(u,v) Proof: DP Processor: DPs: f#(true(),x,y,z) -> plus#(y,z) f#(true(),x,y,z) -> gt#(x,plus(y,z)) f#(true(),x,y,z) -> f#(gt(x,plus(y,z)),x,s(y),z) f#(true(),x,y,z) -> f#(gt(x,plus(y,z)),x,y,s(z)) plus#(n,s(m)) -> plus#(n,m) gt#(s(u),s(v)) -> gt#(u,v) TRS: f(true(),x,y,z) -> f(gt(x,plus(y,z)),x,s(y),z) f(true(),x,y,z) -> f(gt(x,plus(y,z)),x,y,s(z)) plus(n,0()) -> n plus(n,s(m)) -> s(plus(n,m)) gt(0(),v) -> false() gt(s(u),0()) -> true() gt(s(u),s(v)) -> gt(u,v) TDG Processor: DPs: f#(true(),x,y,z) -> plus#(y,z) f#(true(),x,y,z) -> gt#(x,plus(y,z)) f#(true(),x,y,z) -> f#(gt(x,plus(y,z)),x,s(y),z) f#(true(),x,y,z) -> f#(gt(x,plus(y,z)),x,y,s(z)) plus#(n,s(m)) -> plus#(n,m) gt#(s(u),s(v)) -> gt#(u,v) TRS: f(true(),x,y,z) -> f(gt(x,plus(y,z)),x,s(y),z) f(true(),x,y,z) -> f(gt(x,plus(y,z)),x,y,s(z)) plus(n,0()) -> n plus(n,s(m)) -> s(plus(n,m)) gt(0(),v) -> false() gt(s(u),0()) -> true() gt(s(u),s(v)) -> gt(u,v) graph: gt#(s(u),s(v)) -> gt#(u,v) -> gt#(s(u),s(v)) -> gt#(u,v) plus#(n,s(m)) -> plus#(n,m) -> plus#(n,s(m)) -> plus#(n,m) f#(true(),x,y,z) -> gt#(x,plus(y,z)) -> gt#(s(u),s(v)) -> gt#(u,v) f#(true(),x,y,z) -> plus#(y,z) -> plus#(n,s(m)) -> plus#(n,m) f#(true(),x,y,z) -> f#(gt(x,plus(y,z)),x,s(y),z) -> f#(true(),x,y,z) -> f#(gt(x,plus(y,z)),x,y,s(z)) f#(true(),x,y,z) -> f#(gt(x,plus(y,z)),x,s(y),z) -> f#(true(),x,y,z) -> f#(gt(x,plus(y,z)),x,s(y),z) f#(true(),x,y,z) -> f#(gt(x,plus(y,z)),x,s(y),z) -> f#(true(),x,y,z) -> gt#(x,plus(y,z)) f#(true(),x,y,z) -> f#(gt(x,plus(y,z)),x,s(y),z) -> f#(true(),x,y,z) -> plus#(y,z) f#(true(),x,y,z) -> f#(gt(x,plus(y,z)),x,y,s(z)) -> f#(true(),x,y,z) -> f#(gt(x,plus(y,z)),x,y,s(z)) f#(true(),x,y,z) -> f#(gt(x,plus(y,z)),x,y,s(z)) -> f#(true(),x,y,z) -> f#(gt(x,plus(y,z)),x,s(y),z) f#(true(),x,y,z) -> f#(gt(x,plus(y,z)),x,y,s(z)) -> f#(true(),x,y,z) -> gt#(x,plus(y,z)) f#(true(),x,y,z) -> f#(gt(x,plus(y,z)),x,y,s(z)) -> f#(true(),x,y,z) -> plus#(y,z) SCC Processor: #sccs: 3 #rules: 4 #arcs: 12/36 DPs: f#(true(),x,y,z) -> f#(gt(x,plus(y,z)),x,s(y),z) f#(true(),x,y,z) -> f#(gt(x,plus(y,z)),x,y,s(z)) TRS: f(true(),x,y,z) -> f(gt(x,plus(y,z)),x,s(y),z) f(true(),x,y,z) -> f(gt(x,plus(y,z)),x,y,s(z)) plus(n,0()) -> n plus(n,s(m)) -> s(plus(n,m)) gt(0(),v) -> false() gt(s(u),0()) -> true() gt(s(u),s(v)) -> gt(u,v) Open DPs: plus#(n,s(m)) -> plus#(n,m) TRS: f(true(),x,y,z) -> f(gt(x,plus(y,z)),x,s(y),z) f(true(),x,y,z) -> f(gt(x,plus(y,z)),x,y,s(z)) plus(n,0()) -> n plus(n,s(m)) -> s(plus(n,m)) gt(0(),v) -> false() gt(s(u),0()) -> true() gt(s(u),s(v)) -> gt(u,v) Subterm Criterion Processor: simple projection: pi(plus#) = 1 problem: DPs: TRS: f(true(),x,y,z) -> f(gt(x,plus(y,z)),x,s(y),z) f(true(),x,y,z) -> f(gt(x,plus(y,z)),x,y,s(z)) plus(n,0()) -> n plus(n,s(m)) -> s(plus(n,m)) gt(0(),v) -> false() gt(s(u),0()) -> true() gt(s(u),s(v)) -> gt(u,v) Qed DPs: gt#(s(u),s(v)) -> gt#(u,v) TRS: f(true(),x,y,z) -> f(gt(x,plus(y,z)),x,s(y),z) f(true(),x,y,z) -> f(gt(x,plus(y,z)),x,y,s(z)) plus(n,0()) -> n plus(n,s(m)) -> s(plus(n,m)) gt(0(),v) -> false() gt(s(u),0()) -> true() gt(s(u),s(v)) -> gt(u,v) Subterm Criterion Processor: simple projection: pi(gt#) = 1 problem: DPs: TRS: f(true(),x,y,z) -> f(gt(x,plus(y,z)),x,s(y),z) f(true(),x,y,z) -> f(gt(x,plus(y,z)),x,y,s(z)) plus(n,0()) -> n plus(n,s(m)) -> s(plus(n,m)) gt(0(),v) -> false() gt(s(u),0()) -> true() gt(s(u),s(v)) -> gt(u,v) Qed