/export/starexec/sandbox2/solver/bin/starexec_run_ttt2 /export/starexec/sandbox2/benchmark/theBenchmark.xml /export/starexec/sandbox2/output/output_files -------------------------------------------------------------------------------- YES Problem: p(0()) -> 0() p(s(x)) -> x plus(x,0()) -> x plus(0(),y) -> y plus(s(x),y) -> s(plus(x,y)) plus(s(x),y) -> s(plus(p(s(x)),y)) plus(x,s(y)) -> s(plus(x,p(s(y)))) times(0(),y) -> 0() times(s(0()),y) -> y times(s(x),y) -> plus(y,times(x,y)) div(0(),y) -> 0() div(x,y) -> quot(x,y,y) quot(zero(y),s(y),z) -> 0() quot(s(x),s(y),z) -> quot(x,y,z) quot(x,0(),s(z)) -> s(div(x,s(z))) div(div(x,y),z) -> div(x,times(zero(y),z)) eq(0(),0()) -> true() eq(s(x),0()) -> false() eq(0(),s(y)) -> false() eq(s(x),s(y)) -> eq(x,y) divides(y,x) -> eq(x,times(div(x,y),y)) prime(s(s(x))) -> pr(s(s(x)),s(x)) pr(x,s(0())) -> true() pr(x,s(s(y))) -> if(divides(s(s(y)),x),x,s(y)) if(true(),x,y) -> false() if(false(),x,y) -> pr(x,y) zero(div(x,x)) -> x zero(divides(x,x)) -> x zero(times(x,x)) -> x zero(quot(x,x,x)) -> x zero(s(x)) -> if(eq(x,s(0())),plus(zero(0()),0()),s(plus(0(),zero(0())))) Proof: DP Processor: DPs: plus#(s(x),y) -> plus#(x,y) plus#(s(x),y) -> p#(s(x)) plus#(s(x),y) -> plus#(p(s(x)),y) plus#(x,s(y)) -> p#(s(y)) plus#(x,s(y)) -> plus#(x,p(s(y))) times#(s(x),y) -> times#(x,y) times#(s(x),y) -> plus#(y,times(x,y)) div#(x,y) -> quot#(x,y,y) quot#(s(x),s(y),z) -> quot#(x,y,z) quot#(x,0(),s(z)) -> div#(x,s(z)) div#(div(x,y),z) -> zero#(y) div#(div(x,y),z) -> times#(zero(y),z) div#(div(x,y),z) -> div#(x,times(zero(y),z)) eq#(s(x),s(y)) -> eq#(x,y) divides#(y,x) -> div#(x,y) divides#(y,x) -> times#(div(x,y),y) divides#(y,x) -> eq#(x,times(div(x,y),y)) prime#(s(s(x))) -> pr#(s(s(x)),s(x)) pr#(x,s(s(y))) -> divides#(s(s(y)),x) pr#(x,s(s(y))) -> if#(divides(s(s(y)),x),x,s(y)) if#(false(),x,y) -> pr#(x,y) zero#(s(x)) -> plus#(0(),zero(0())) zero#(s(x)) -> zero#(0()) zero#(s(x)) -> plus#(zero(0()),0()) zero#(s(x)) -> eq#(x,s(0())) zero#(s(x)) -> if#(eq(x,s(0())),plus(zero(0()),0()),s(plus(0(),zero(0())))) TRS: p(0()) -> 0() p(s(x)) -> x plus(x,0()) -> x plus(0(),y) -> y plus(s(x),y) -> s(plus(x,y)) plus(s(x),y) -> s(plus(p(s(x)),y)) plus(x,s(y)) -> s(plus(x,p(s(y)))) times(0(),y) -> 0() times(s(0()),y) -> y times(s(x),y) -> plus(y,times(x,y)) div(0(),y) -> 0() div(x,y) -> quot(x,y,y) quot(zero(y),s(y),z) -> 0() quot(s(x),s(y),z) -> quot(x,y,z) quot(x,0(),s(z)) -> s(div(x,s(z))) div(div(x,y),z) -> div(x,times(zero(y),z)) eq(0(),0()) -> true() eq(s(x),0()) -> false() eq(0(),s(y)) -> false() eq(s(x),s(y)) -> eq(x,y) divides(y,x) -> eq(x,times(div(x,y),y)) prime(s(s(x))) -> pr(s(s(x)),s(x)) pr(x,s(0())) -> true() pr(x,s(s(y))) -> if(divides(s(s(y)),x),x,s(y)) if(true(),x,y) -> false() if(false(),x,y) -> pr(x,y) zero(div(x,x)) -> x zero(divides(x,x)) -> x zero(times(x,x)) -> x zero(quot(x,x,x)) -> x zero(s(x)) -> if(eq(x,s(0())),plus(zero(0()),0()),s(plus(0(),zero(0())))) TDG Processor: DPs: plus#(s(x),y) -> plus#(x,y) plus#(s(x),y) -> p#(s(x)) plus#(s(x),y) -> plus#(p(s(x)),y) plus#(x,s(y)) -> p#(s(y)) plus#(x,s(y)) -> plus#(x,p(s(y))) times#(s(x),y) -> times#(x,y) times#(s(x),y) -> plus#(y,times(x,y)) div#(x,y) -> quot#(x,y,y) quot#(s(x),s(y),z) -> quot#(x,y,z) quot#(x,0(),s(z)) -> div#(x,s(z)) div#(div(x,y),z) -> zero#(y) div#(div(x,y),z) -> times#(zero(y),z) div#(div(x,y),z) -> div#(x,times(zero(y),z)) eq#(s(x),s(y)) -> eq#(x,y) divides#(y,x) -> div#(x,y) divides#(y,x) -> times#(div(x,y),y) divides#(y,x) -> eq#(x,times(div(x,y),y)) prime#(s(s(x))) -> pr#(s(s(x)),s(x)) pr#(x,s(s(y))) -> divides#(s(s(y)),x) pr#(x,s(s(y))) -> if#(divides(s(s(y)),x),x,s(y)) if#(false(),x,y) -> pr#(x,y) zero#(s(x)) -> plus#(0(),zero(0())) zero#(s(x)) -> zero#(0()) zero#(s(x)) -> plus#(zero(0()),0()) zero#(s(x)) -> eq#(x,s(0())) zero#(s(x)) -> if#(eq(x,s(0())),plus(zero(0()),0()),s(plus(0(),zero(0())))) TRS: p(0()) -> 0() p(s(x)) -> x plus(x,0()) -> x plus(0(),y) -> y plus(s(x),y) -> s(plus(x,y)) plus(s(x),y) -> s(plus(p(s(x)),y)) plus(x,s(y)) -> s(plus(x,p(s(y)))) times(0(),y) -> 0() times(s(0()),y) -> y times(s(x),y) -> plus(y,times(x,y)) div(0(),y) -> 0() div(x,y) -> quot(x,y,y) quot(zero(y),s(y),z) -> 0() quot(s(x),s(y),z) -> quot(x,y,z) quot(x,0(),s(z)) -> s(div(x,s(z))) div(div(x,y),z) -> div(x,times(zero(y),z)) eq(0(),0()) -> true() eq(s(x),0()) -> false() eq(0(),s(y)) -> false() eq(s(x),s(y)) -> eq(x,y) divides(y,x) -> eq(x,times(div(x,y),y)) prime(s(s(x))) -> pr(s(s(x)),s(x)) pr(x,s(0())) -> true() pr(x,s(s(y))) -> if(divides(s(s(y)),x),x,s(y)) if(true(),x,y) -> false() if(false(),x,y) -> pr(x,y) zero(div(x,x)) -> x zero(divides(x,x)) -> x zero(times(x,x)) -> x zero(quot(x,x,x)) -> x zero(s(x)) -> if(eq(x,s(0())),plus(zero(0()),0()),s(plus(0(),zero(0())))) graph: if#(false(),x,y) -> pr#(x,y) -> pr#(x,s(s(y))) -> if#(divides(s(s(y)),x),x,s(y)) if#(false(),x,y) -> pr#(x,y) -> pr#(x,s(s(y))) -> divides#(s(s(y)),x) pr#(x,s(s(y))) -> if#(divides(s(s(y)),x),x,s(y)) -> if#(false(),x,y) -> pr#(x,y) pr#(x,s(s(y))) -> divides#(s(s(y)),x) -> divides#(y,x) -> eq#(x,times(div(x,y),y)) pr#(x,s(s(y))) -> divides#(s(s(y)),x) -> divides#(y,x) -> times#(div(x,y),y) pr#(x,s(s(y))) -> divides#(s(s(y)),x) -> divides#(y,x) -> div#(x,y) prime#(s(s(x))) -> pr#(s(s(x)),s(x)) -> pr#(x,s(s(y))) -> if#(divides(s(s(y)),x),x,s(y)) prime#(s(s(x))) -> pr#(s(s(x)),s(x)) -> pr#(x,s(s(y))) -> divides#(s(s(y)),x) divides#(y,x) -> eq#(x,times(div(x,y),y)) -> eq#(s(x),s(y)) -> eq#(x,y) divides#(y,x) -> div#(x,y) -> div#(div(x,y),z) -> div#(x,times(zero(y),z)) divides#(y,x) -> div#(x,y) -> div#(div(x,y),z) -> times#(zero(y),z) divides#(y,x) -> div#(x,y) -> div#(div(x,y),z) -> zero#(y) divides#(y,x) -> div#(x,y) -> div#(x,y) -> quot#(x,y,y) divides#(y,x) -> times#(div(x,y),y) -> times#(s(x),y) -> plus#(y,times(x,y)) divides#(y,x) -> times#(div(x,y),y) -> times#(s(x),y) -> times#(x,y) eq#(s(x),s(y)) -> eq#(x,y) -> eq#(s(x),s(y)) -> eq#(x,y) zero#(s(x)) -> if#(eq(x,s(0())),plus(zero(0()),0()),s(plus(0(),zero(0())))) -> if#(false(),x,y) -> pr#(x,y) zero#(s(x)) -> eq#(x,s(0())) -> eq#(s(x),s(y)) -> eq#(x,y) zero#(s(x)) -> zero#(0()) -> zero#(s(x)) -> if#(eq(x,s(0())),plus(zero(0()),0()),s(plus(0(),zero(0())))) zero#(s(x)) -> zero#(0()) -> zero#(s(x)) -> eq#(x,s(0())) zero#(s(x)) -> zero#(0()) -> zero#(s(x)) -> plus#(zero(0()),0()) zero#(s(x)) -> zero#(0()) -> zero#(s(x)) -> zero#(0()) zero#(s(x)) -> zero#(0()) -> zero#(s(x)) -> plus#(0(),zero(0())) zero#(s(x)) -> plus#(zero(0()),0()) -> plus#(x,s(y)) -> plus#(x,p(s(y))) zero#(s(x)) -> plus#(zero(0()),0()) -> plus#(x,s(y)) -> p#(s(y)) zero#(s(x)) -> plus#(zero(0()),0()) -> plus#(s(x),y) -> plus#(p(s(x)),y) zero#(s(x)) -> plus#(zero(0()),0()) -> plus#(s(x),y) -> p#(s(x)) zero#(s(x)) -> plus#(zero(0()),0()) -> plus#(s(x),y) -> plus#(x,y) zero#(s(x)) -> plus#(0(),zero(0())) -> plus#(x,s(y)) -> plus#(x,p(s(y))) zero#(s(x)) -> plus#(0(),zero(0())) -> plus#(x,s(y)) -> p#(s(y)) zero#(s(x)) -> plus#(0(),zero(0())) -> plus#(s(x),y) -> plus#(p(s(x)),y) zero#(s(x)) -> plus#(0(),zero(0())) -> plus#(s(x),y) -> p#(s(x)) zero#(s(x)) -> plus#(0(),zero(0())) -> plus#(s(x),y) -> plus#(x,y) quot#(s(x),s(y),z) -> quot#(x,y,z) -> quot#(x,0(),s(z)) -> div#(x,s(z)) quot#(s(x),s(y),z) -> quot#(x,y,z) -> quot#(s(x),s(y),z) -> quot#(x,y,z) quot#(x,0(),s(z)) -> div#(x,s(z)) -> div#(div(x,y),z) -> div#(x,times(zero(y),z)) quot#(x,0(),s(z)) -> div#(x,s(z)) -> div#(div(x,y),z) -> times#(zero(y),z) quot#(x,0(),s(z)) -> div#(x,s(z)) -> div#(div(x,y),z) -> zero#(y) quot#(x,0(),s(z)) -> div#(x,s(z)) -> div#(x,y) -> quot#(x,y,y) div#(div(x,y),z) -> zero#(y) -> zero#(s(x)) -> if#(eq(x,s(0())),plus(zero(0()),0()),s(plus(0(),zero(0())))) div#(div(x,y),z) -> zero#(y) -> zero#(s(x)) -> eq#(x,s(0())) div#(div(x,y),z) -> zero#(y) -> zero#(s(x)) -> plus#(zero(0()),0()) div#(div(x,y),z) -> zero#(y) -> zero#(s(x)) -> zero#(0()) div#(div(x,y),z) -> zero#(y) -> zero#(s(x)) -> plus#(0(),zero(0())) div#(div(x,y),z) -> div#(x,times(zero(y),z)) -> div#(div(x,y),z) -> div#(x,times(zero(y),z)) div#(div(x,y),z) -> div#(x,times(zero(y),z)) -> div#(div(x,y),z) -> times#(zero(y),z) div#(div(x,y),z) -> div#(x,times(zero(y),z)) -> div#(div(x,y),z) -> zero#(y) div#(div(x,y),z) -> div#(x,times(zero(y),z)) -> div#(x,y) -> quot#(x,y,y) div#(div(x,y),z) -> times#(zero(y),z) -> times#(s(x),y) -> plus#(y,times(x,y)) div#(div(x,y),z) -> times#(zero(y),z) -> times#(s(x),y) -> times#(x,y) div#(x,y) -> quot#(x,y,y) -> quot#(x,0(),s(z)) -> div#(x,s(z)) div#(x,y) -> quot#(x,y,y) -> quot#(s(x),s(y),z) -> quot#(x,y,z) times#(s(x),y) -> times#(x,y) -> times#(s(x),y) -> plus#(y,times(x,y)) times#(s(x),y) -> times#(x,y) -> times#(s(x),y) -> times#(x,y) times#(s(x),y) -> plus#(y,times(x,y)) -> plus#(x,s(y)) -> plus#(x,p(s(y))) times#(s(x),y) -> plus#(y,times(x,y)) -> plus#(x,s(y)) -> p#(s(y)) times#(s(x),y) -> plus#(y,times(x,y)) -> plus#(s(x),y) -> plus#(p(s(x)),y) times#(s(x),y) -> plus#(y,times(x,y)) -> plus#(s(x),y) -> p#(s(x)) times#(s(x),y) -> plus#(y,times(x,y)) -> plus#(s(x),y) -> plus#(x,y) plus#(s(x),y) -> plus#(p(s(x)),y) -> plus#(x,s(y)) -> plus#(x,p(s(y))) plus#(s(x),y) -> plus#(p(s(x)),y) -> plus#(x,s(y)) -> p#(s(y)) plus#(s(x),y) -> plus#(p(s(x)),y) -> plus#(s(x),y) -> plus#(p(s(x)),y) plus#(s(x),y) -> plus#(p(s(x)),y) -> plus#(s(x),y) -> p#(s(x)) plus#(s(x),y) -> plus#(p(s(x)),y) -> plus#(s(x),y) -> plus#(x,y) plus#(s(x),y) -> plus#(x,y) -> plus#(x,s(y)) -> plus#(x,p(s(y))) plus#(s(x),y) -> plus#(x,y) -> plus#(x,s(y)) -> p#(s(y)) plus#(s(x),y) -> plus#(x,y) -> plus#(s(x),y) -> plus#(p(s(x)),y) plus#(s(x),y) -> plus#(x,y) -> plus#(s(x),y) -> p#(s(x)) plus#(s(x),y) -> plus#(x,y) -> plus#(s(x),y) -> plus#(x,y) plus#(x,s(y)) -> plus#(x,p(s(y))) -> plus#(x,s(y)) -> plus#(x,p(s(y))) plus#(x,s(y)) -> plus#(x,p(s(y))) -> plus#(x,s(y)) -> p#(s(y)) plus#(x,s(y)) -> plus#(x,p(s(y))) -> plus#(s(x),y) -> plus#(p(s(x)),y) plus#(x,s(y)) -> plus#(x,p(s(y))) -> plus#(s(x),y) -> p#(s(x)) plus#(x,s(y)) -> plus#(x,p(s(y))) -> plus#(s(x),y) -> plus#(x,y) SCC Processor: #sccs: 4 #rules: 16 #arcs: 74/676 DPs: if#(false(),x,y) -> pr#(x,y) pr#(x,s(s(y))) -> divides#(s(s(y)),x) divides#(y,x) -> div#(x,y) div#(x,y) -> quot#(x,y,y) quot#(s(x),s(y),z) -> quot#(x,y,z) quot#(x,0(),s(z)) -> div#(x,s(z)) div#(div(x,y),z) -> zero#(y) zero#(s(x)) -> zero#(0()) zero#(s(x)) -> if#(eq(x,s(0())),plus(zero(0()),0()),s(plus(0(),zero(0())))) div#(div(x,y),z) -> div#(x,times(zero(y),z)) pr#(x,s(s(y))) -> if#(divides(s(s(y)),x),x,s(y)) TRS: p(0()) -> 0() p(s(x)) -> x plus(x,0()) -> x plus(0(),y) -> y plus(s(x),y) -> s(plus(x,y)) plus(s(x),y) -> s(plus(p(s(x)),y)) plus(x,s(y)) -> s(plus(x,p(s(y)))) times(0(),y) -> 0() times(s(0()),y) -> y times(s(x),y) -> plus(y,times(x,y)) div(0(),y) -> 0() div(x,y) -> quot(x,y,y) quot(zero(y),s(y),z) -> 0() quot(s(x),s(y),z) -> quot(x,y,z) quot(x,0(),s(z)) -> s(div(x,s(z))) div(div(x,y),z) -> div(x,times(zero(y),z)) eq(0(),0()) -> true() eq(s(x),0()) -> false() eq(0(),s(y)) -> false() eq(s(x),s(y)) -> eq(x,y) divides(y,x) -> eq(x,times(div(x,y),y)) prime(s(s(x))) -> pr(s(s(x)),s(x)) pr(x,s(0())) -> true() pr(x,s(s(y))) -> if(divides(s(s(y)),x),x,s(y)) if(true(),x,y) -> false() if(false(),x,y) -> pr(x,y) zero(div(x,x)) -> x zero(divides(x,x)) -> x zero(times(x,x)) -> x zero(quot(x,x,x)) -> x zero(s(x)) -> if(eq(x,s(0())),plus(zero(0()),0()),s(plus(0(),zero(0())))) EDG Processor: DPs: if#(false(),x,y) -> pr#(x,y) pr#(x,s(s(y))) -> divides#(s(s(y)),x) divides#(y,x) -> div#(x,y) div#(x,y) -> quot#(x,y,y) quot#(s(x),s(y),z) -> quot#(x,y,z) quot#(x,0(),s(z)) -> div#(x,s(z)) div#(div(x,y),z) -> zero#(y) zero#(s(x)) -> zero#(0()) zero#(s(x)) -> if#(eq(x,s(0())),plus(zero(0()),0()),s(plus(0(),zero(0())))) div#(div(x,y),z) -> div#(x,times(zero(y),z)) pr#(x,s(s(y))) -> if#(divides(s(s(y)),x),x,s(y)) TRS: p(0()) -> 0() p(s(x)) -> x plus(x,0()) -> x plus(0(),y) -> y plus(s(x),y) -> s(plus(x,y)) plus(s(x),y) -> s(plus(p(s(x)),y)) plus(x,s(y)) -> s(plus(x,p(s(y)))) times(0(),y) -> 0() times(s(0()),y) -> y times(s(x),y) -> plus(y,times(x,y)) div(0(),y) -> 0() div(x,y) -> quot(x,y,y) quot(zero(y),s(y),z) -> 0() quot(s(x),s(y),z) -> quot(x,y,z) quot(x,0(),s(z)) -> s(div(x,s(z))) div(div(x,y),z) -> div(x,times(zero(y),z)) eq(0(),0()) -> true() eq(s(x),0()) -> false() eq(0(),s(y)) -> false() eq(s(x),s(y)) -> eq(x,y) divides(y,x) -> eq(x,times(div(x,y),y)) prime(s(s(x))) -> pr(s(s(x)),s(x)) pr(x,s(0())) -> true() pr(x,s(s(y))) -> if(divides(s(s(y)),x),x,s(y)) if(true(),x,y) -> false() if(false(),x,y) -> pr(x,y) zero(div(x,x)) -> x zero(divides(x,x)) -> x zero(times(x,x)) -> x zero(quot(x,x,x)) -> x zero(s(x)) -> if(eq(x,s(0())),plus(zero(0()),0()),s(plus(0(),zero(0())))) graph: if#(false(),x,y) -> pr#(x,y) -> pr#(x,s(s(y))) -> divides#(s(s(y)),x) if#(false(),x,y) -> pr#(x,y) -> pr#(x,s(s(y))) -> if#(divides(s(s(y)),x),x,s(y)) pr#(x,s(s(y))) -> if#(divides(s(s(y)),x),x,s(y)) -> if#(false(),x,y) -> pr#(x,y) pr#(x,s(s(y))) -> divides#(s(s(y)),x) -> divides#(y,x) -> div#(x,y) divides#(y,x) -> div#(x,y) -> div#(x,y) -> quot#(x,y,y) divides#(y,x) -> div#(x,y) -> div#(div(x,y),z) -> zero#(y) divides#(y,x) -> div#(x,y) -> div#(div(x,y),z) -> div#(x,times(zero(y),z)) zero#(s(x)) -> if#(eq(x,s(0())),plus(zero(0()),0()),s(plus(0(),zero(0())))) -> if#(false(),x,y) -> pr#(x,y) quot#(s(x),s(y),z) -> quot#(x,y,z) -> quot#(s(x),s(y),z) -> quot#(x,y,z) quot#(s(x),s(y),z) -> quot#(x,y,z) -> quot#(x,0(),s(z)) -> div#(x,s(z)) quot#(x,0(),s(z)) -> div#(x,s(z)) -> div#(x,y) -> quot#(x,y,y) quot#(x,0(),s(z)) -> div#(x,s(z)) -> div#(div(x,y),z) -> zero#(y) quot#(x,0(),s(z)) -> div#(x,s(z)) -> div#(div(x,y),z) -> div#(x,times(zero(y),z)) div#(div(x,y),z) -> zero#(y) -> zero#(s(x)) -> zero#(0()) div#(div(x,y),z) -> zero#(y) -> zero#(s(x)) -> if#(eq(x,s(0())),plus(zero(0()),0()),s(plus(0(),zero(0())))) div#(div(x,y),z) -> div#(x,times(zero(y),z)) -> div#(x,y) -> quot#(x,y,y) div#(div(x,y),z) -> div#(x,times(zero(y),z)) -> div#(div(x,y),z) -> zero#(y) div#(div(x,y),z) -> div#(x,times(zero(y),z)) -> div#(div(x,y),z) -> div#(x,times(zero(y),z)) div#(x,y) -> quot#(x,y,y) -> quot#(s(x),s(y),z) -> quot#(x,y,z) div#(x,y) -> quot#(x,y,y) -> quot#(x,0(),s(z)) -> div#(x,s(z)) SCC Processor: #sccs: 1 #rules: 10 #arcs: 20/121 DPs: if#(false(),x,y) -> pr#(x,y) pr#(x,s(s(y))) -> if#(divides(s(s(y)),x),x,s(y)) pr#(x,s(s(y))) -> divides#(s(s(y)),x) divides#(y,x) -> div#(x,y) div#(div(x,y),z) -> div#(x,times(zero(y),z)) div#(div(x,y),z) -> zero#(y) zero#(s(x)) -> if#(eq(x,s(0())),plus(zero(0()),0()),s(plus(0(),zero(0())))) div#(x,y) -> quot#(x,y,y) quot#(x,0(),s(z)) -> div#(x,s(z)) quot#(s(x),s(y),z) -> quot#(x,y,z) TRS: p(0()) -> 0() p(s(x)) -> x plus(x,0()) -> x plus(0(),y) -> y plus(s(x),y) -> s(plus(x,y)) plus(s(x),y) -> s(plus(p(s(x)),y)) plus(x,s(y)) -> s(plus(x,p(s(y)))) times(0(),y) -> 0() times(s(0()),y) -> y times(s(x),y) -> plus(y,times(x,y)) div(0(),y) -> 0() div(x,y) -> quot(x,y,y) quot(zero(y),s(y),z) -> 0() quot(s(x),s(y),z) -> quot(x,y,z) quot(x,0(),s(z)) -> s(div(x,s(z))) div(div(x,y),z) -> div(x,times(zero(y),z)) eq(0(),0()) -> true() eq(s(x),0()) -> false() eq(0(),s(y)) -> false() eq(s(x),s(y)) -> eq(x,y) divides(y,x) -> eq(x,times(div(x,y),y)) prime(s(s(x))) -> pr(s(s(x)),s(x)) pr(x,s(0())) -> true() pr(x,s(s(y))) -> if(divides(s(s(y)),x),x,s(y)) if(true(),x,y) -> false() if(false(),x,y) -> pr(x,y) zero(div(x,x)) -> x zero(divides(x,x)) -> x zero(times(x,x)) -> x zero(quot(x,x,x)) -> x zero(s(x)) -> if(eq(x,s(0())),plus(zero(0()),0()),s(plus(0(),zero(0())))) Usable Rule Processor: DPs: if#(false(),x,y) -> pr#(x,y) pr#(x,s(s(y))) -> if#(divides(s(s(y)),x),x,s(y)) pr#(x,s(s(y))) -> divides#(s(s(y)),x) divides#(y,x) -> div#(x,y) div#(div(x,y),z) -> div#(x,times(zero(y),z)) div#(div(x,y),z) -> zero#(y) zero#(s(x)) -> if#(eq(x,s(0())),plus(zero(0()),0()),s(plus(0(),zero(0())))) div#(x,y) -> quot#(x,y,y) quot#(x,0(),s(z)) -> div#(x,s(z)) quot#(s(x),s(y),z) -> quot#(x,y,z) TRS: divides(y,x) -> eq(x,times(div(x,y),y)) eq(0(),0()) -> true() eq(s(x),0()) -> false() eq(0(),s(y)) -> false() eq(s(x),s(y)) -> eq(x,y) div(0(),y) -> 0() div(x,y) -> quot(x,y,y) div(div(x,y),z) -> div(x,times(zero(y),z)) quot(zero(y),s(y),z) -> 0() quot(s(x),s(y),z) -> quot(x,y,z) quot(x,0(),s(z)) -> s(div(x,s(z))) zero(div(x,x)) -> x zero(divides(x,x)) -> x zero(times(x,x)) -> x zero(quot(x,x,x)) -> x zero(s(x)) -> if(eq(x,s(0())),plus(zero(0()),0()),s(plus(0(),zero(0())))) if(true(),x,y) -> false() if(false(),x,y) -> pr(x,y) plus(0(),y) -> y plus(x,0()) -> x pr(x,s(0())) -> true() pr(x,s(s(y))) -> if(divides(s(s(y)),x),x,s(y)) times(0(),y) -> 0() times(s(0()),y) -> y times(s(x),y) -> plus(y,times(x,y)) plus(s(x),y) -> s(plus(x,y)) plus(s(x),y) -> s(plus(p(s(x)),y)) plus(x,s(y)) -> s(plus(x,p(s(y)))) p(s(x)) -> x Arctic Interpretation Processor: dimension: 1 usable rules: divides(y,x) -> eq(x,times(div(x,y),y)) eq(0(),0()) -> true() eq(s(x),0()) -> false() eq(0(),s(y)) -> false() eq(s(x),s(y)) -> eq(x,y) zero(div(x,x)) -> x zero(divides(x,x)) -> x zero(times(x,x)) -> x zero(quot(x,x,x)) -> x zero(s(x)) -> if(eq(x,s(0())),plus(zero(0()),0()),s(plus(0(),zero(0())))) if(true(),x,y) -> false() if(false(),x,y) -> pr(x,y) plus(0(),y) -> y plus(x,0()) -> x pr(x,s(0())) -> true() pr(x,s(s(y))) -> if(divides(s(s(y)),x),x,s(y)) times(0(),y) -> 0() times(s(0()),y) -> y times(s(x),y) -> plus(y,times(x,y)) plus(s(x),y) -> s(plus(x,y)) plus(s(x),y) -> s(plus(p(s(x)),y)) plus(x,s(y)) -> s(plus(x,p(s(y)))) p(s(x)) -> x interpretation: [div#](x0, x1) = 4x0 + 2x1, [times](x0, x1) = 4x0 + x1 + 0, [eq](x0, x1) = x0 + 0, [p](x0) = x0 + 0, [plus](x0, x1) = x0 + x1 + 0, [quot#](x0, x1, x2) = 4x0 + x1 + 2x2, [divides#](x0, x1) = 3x0 + 5x1 + 0, [div](x0, x1) = x0 + 2x1 + 3, [false] = 0, [0] = 0, [zero](x0) = x0 + 1, [zero#](x0) = 4x0 + 7, [if#](x0, x1, x2) = x0 + 5x1 + 6x2 + 0, [if](x0, x1, x2) = x1 + 0, [pr#](x0, x1) = 5x0 + 6x1 + 0, [divides](x0, x1) = 3x0 + x1 + 0, [true] = 0, [pr](x0, x1) = x0 + 0, [quot](x0, x1, x2) = 4x1 + 6x2, [s](x0) = x0 orientation: if#(false(),x,y) = 5x + 6y + 0 >= 5x + 6y + 0 = pr#(x,y) pr#(x,s(s(y))) = 5x + 6y + 0 >= 5x + 6y + 0 = if#(divides(s(s(y)),x),x,s(y)) pr#(x,s(s(y))) = 5x + 6y + 0 >= 5x + 3y + 0 = divides#(s(s(y)),x) divides#(y,x) = 5x + 3y + 0 >= 4x + 2y = div#(x,y) div#(div(x,y),z) = 4x + 6y + 2z + 7 >= 4x + 6y + 2z + 7 = div#(x,times(zero(y),z)) div#(div(x,y),z) = 4x + 6y + 2z + 7 >= 4y + 7 = zero#(y) zero#(s(x)) = 4x + 7 >= x + 7 = if#(eq(x,s(0())),plus(zero(0()),0()),s(plus(0(),zero(0())))) div#(x,y) = 4x + 2y >= 4x + 2y = quot#(x,y,y) quot#(x,0(),s(z)) = 4x + 2z + 0 >= 4x + 2z = div#(x,s(z)) quot#(s(x),s(y),z) = 4x + y + 2z >= 4x + y + 2z = quot#(x,y,z) divides(y,x) = x + 3y + 0 >= x + 0 = eq(x,times(div(x,y),y)) eq(0(),0()) = 0 >= 0 = true() eq(s(x),0()) = x + 0 >= 0 = false() eq(0(),s(y)) = 0 >= 0 = false() eq(s(x),s(y)) = x + 0 >= x + 0 = eq(x,y) div(0(),y) = 2y + 3 >= 0 = 0() div(x,y) = x + 2y + 3 >= 6y = quot(x,y,y) div(div(x,y),z) = x + 2y + 2z + 3 >= x + 6y + 2z + 7 = div(x,times(zero(y),z)) quot(zero(y),s(y),z) = 4y + 6z >= 0 = 0() quot(s(x),s(y),z) = 4y + 6z >= 4y + 6z = quot(x,y,z) quot(x,0(),s(z)) = 6z + 4 >= x + 2z + 3 = s(div(x,s(z))) zero(div(x,x)) = 2x + 3 >= x = x zero(divides(x,x)) = 3x + 1 >= x = x zero(times(x,x)) = 4x + 1 >= x = x zero(quot(x,x,x)) = 6x + 1 >= x = x zero(s(x)) = x + 1 >= 1 = if(eq(x,s(0())),plus(zero(0()),0()),s(plus(0(),zero(0())))) if(true(),x,y) = x + 0 >= 0 = false() if(false(),x,y) = x + 0 >= x + 0 = pr(x,y) plus(0(),y) = y + 0 >= y = y plus(x,0()) = x + 0 >= x = x pr(x,s(0())) = x + 0 >= 0 = true() pr(x,s(s(y))) = x + 0 >= x + 0 = if(divides(s(s(y)),x),x,s(y)) times(0(),y) = y + 4 >= 0 = 0() times(s(0()),y) = y + 4 >= y = y times(s(x),y) = 4x + y + 0 >= 4x + y + 0 = plus(y,times(x,y)) plus(s(x),y) = x + y + 0 >= x + y + 0 = s(plus(x,y)) plus(s(x),y) = x + y + 0 >= x + y + 0 = s(plus(p(s(x)),y)) plus(x,s(y)) = x + y + 0 >= x + y + 0 = s(plus(x,p(s(y)))) p(s(x)) = x + 0 >= x = x problem: DPs: if#(false(),x,y) -> pr#(x,y) pr#(x,s(s(y))) -> if#(divides(s(s(y)),x),x,s(y)) pr#(x,s(s(y))) -> divides#(s(s(y)),x) div#(div(x,y),z) -> div#(x,times(zero(y),z)) div#(div(x,y),z) -> zero#(y) zero#(s(x)) -> if#(eq(x,s(0())),plus(zero(0()),0()),s(plus(0(),zero(0())))) div#(x,y) -> quot#(x,y,y) quot#(x,0(),s(z)) -> div#(x,s(z)) quot#(s(x),s(y),z) -> quot#(x,y,z) TRS: divides(y,x) -> eq(x,times(div(x,y),y)) eq(0(),0()) -> true() eq(s(x),0()) -> false() eq(0(),s(y)) -> false() eq(s(x),s(y)) -> eq(x,y) div(0(),y) -> 0() div(x,y) -> quot(x,y,y) div(div(x,y),z) -> div(x,times(zero(y),z)) quot(zero(y),s(y),z) -> 0() quot(s(x),s(y),z) -> quot(x,y,z) quot(x,0(),s(z)) -> s(div(x,s(z))) zero(div(x,x)) -> x zero(divides(x,x)) -> x zero(times(x,x)) -> x zero(quot(x,x,x)) -> x zero(s(x)) -> if(eq(x,s(0())),plus(zero(0()),0()),s(plus(0(),zero(0())))) if(true(),x,y) -> false() if(false(),x,y) -> pr(x,y) plus(0(),y) -> y plus(x,0()) -> x pr(x,s(0())) -> true() pr(x,s(s(y))) -> if(divides(s(s(y)),x),x,s(y)) times(0(),y) -> 0() times(s(0()),y) -> y times(s(x),y) -> plus(y,times(x,y)) plus(s(x),y) -> s(plus(x,y)) plus(s(x),y) -> s(plus(p(s(x)),y)) plus(x,s(y)) -> s(plus(x,p(s(y)))) p(s(x)) -> x Restore Modifier: DPs: if#(false(),x,y) -> pr#(x,y) pr#(x,s(s(y))) -> if#(divides(s(s(y)),x),x,s(y)) pr#(x,s(s(y))) -> divides#(s(s(y)),x) div#(div(x,y),z) -> div#(x,times(zero(y),z)) div#(div(x,y),z) -> zero#(y) zero#(s(x)) -> if#(eq(x,s(0())),plus(zero(0()),0()),s(plus(0(),zero(0())))) div#(x,y) -> quot#(x,y,y) quot#(x,0(),s(z)) -> div#(x,s(z)) quot#(s(x),s(y),z) -> quot#(x,y,z) TRS: p(0()) -> 0() p(s(x)) -> x plus(x,0()) -> x plus(0(),y) -> y plus(s(x),y) -> s(plus(x,y)) plus(s(x),y) -> s(plus(p(s(x)),y)) plus(x,s(y)) -> s(plus(x,p(s(y)))) times(0(),y) -> 0() times(s(0()),y) -> y times(s(x),y) -> plus(y,times(x,y)) div(0(),y) -> 0() div(x,y) -> quot(x,y,y) quot(zero(y),s(y),z) -> 0() quot(s(x),s(y),z) -> quot(x,y,z) quot(x,0(),s(z)) -> s(div(x,s(z))) div(div(x,y),z) -> div(x,times(zero(y),z)) eq(0(),0()) -> true() eq(s(x),0()) -> false() eq(0(),s(y)) -> false() eq(s(x),s(y)) -> eq(x,y) divides(y,x) -> eq(x,times(div(x,y),y)) prime(s(s(x))) -> pr(s(s(x)),s(x)) pr(x,s(0())) -> true() pr(x,s(s(y))) -> if(divides(s(s(y)),x),x,s(y)) if(true(),x,y) -> false() if(false(),x,y) -> pr(x,y) zero(div(x,x)) -> x zero(divides(x,x)) -> x zero(times(x,x)) -> x zero(quot(x,x,x)) -> x zero(s(x)) -> if(eq(x,s(0())),plus(zero(0()),0()),s(plus(0(),zero(0())))) SCC Processor: #sccs: 2 #rules: 6 #arcs: 19/81 DPs: quot#(s(x),s(y),z) -> quot#(x,y,z) quot#(x,0(),s(z)) -> div#(x,s(z)) div#(div(x,y),z) -> div#(x,times(zero(y),z)) div#(x,y) -> quot#(x,y,y) TRS: p(0()) -> 0() p(s(x)) -> x plus(x,0()) -> x plus(0(),y) -> y plus(s(x),y) -> s(plus(x,y)) plus(s(x),y) -> s(plus(p(s(x)),y)) plus(x,s(y)) -> s(plus(x,p(s(y)))) times(0(),y) -> 0() times(s(0()),y) -> y times(s(x),y) -> plus(y,times(x,y)) div(0(),y) -> 0() div(x,y) -> quot(x,y,y) quot(zero(y),s(y),z) -> 0() quot(s(x),s(y),z) -> quot(x,y,z) quot(x,0(),s(z)) -> s(div(x,s(z))) div(div(x,y),z) -> div(x,times(zero(y),z)) eq(0(),0()) -> true() eq(s(x),0()) -> false() eq(0(),s(y)) -> false() eq(s(x),s(y)) -> eq(x,y) divides(y,x) -> eq(x,times(div(x,y),y)) prime(s(s(x))) -> pr(s(s(x)),s(x)) pr(x,s(0())) -> true() pr(x,s(s(y))) -> if(divides(s(s(y)),x),x,s(y)) if(true(),x,y) -> false() if(false(),x,y) -> pr(x,y) zero(div(x,x)) -> x zero(divides(x,x)) -> x zero(times(x,x)) -> x zero(quot(x,x,x)) -> x zero(s(x)) -> if(eq(x,s(0())),plus(zero(0()),0()),s(plus(0(),zero(0())))) Subterm Criterion Processor: simple projection: pi(div#) = 0 pi(quot#) = 0 problem: DPs: quot#(x,0(),s(z)) -> div#(x,s(z)) div#(x,y) -> quot#(x,y,y) TRS: p(0()) -> 0() p(s(x)) -> x plus(x,0()) -> x plus(0(),y) -> y plus(s(x),y) -> s(plus(x,y)) plus(s(x),y) -> s(plus(p(s(x)),y)) plus(x,s(y)) -> s(plus(x,p(s(y)))) times(0(),y) -> 0() times(s(0()),y) -> y times(s(x),y) -> plus(y,times(x,y)) div(0(),y) -> 0() div(x,y) -> quot(x,y,y) quot(zero(y),s(y),z) -> 0() quot(s(x),s(y),z) -> quot(x,y,z) quot(x,0(),s(z)) -> s(div(x,s(z))) div(div(x,y),z) -> div(x,times(zero(y),z)) eq(0(),0()) -> true() eq(s(x),0()) -> false() eq(0(),s(y)) -> false() eq(s(x),s(y)) -> eq(x,y) divides(y,x) -> eq(x,times(div(x,y),y)) prime(s(s(x))) -> pr(s(s(x)),s(x)) pr(x,s(0())) -> true() pr(x,s(s(y))) -> if(divides(s(s(y)),x),x,s(y)) if(true(),x,y) -> false() if(false(),x,y) -> pr(x,y) zero(div(x,x)) -> x zero(divides(x,x)) -> x zero(times(x,x)) -> x zero(quot(x,x,x)) -> x zero(s(x)) -> if(eq(x,s(0())),plus(zero(0()),0()),s(plus(0(),zero(0())))) Usable Rule Processor: DPs: quot#(x,0(),s(z)) -> div#(x,s(z)) div#(x,y) -> quot#(x,y,y) TRS: Arctic Interpretation Processor: dimension: 1 usable rules: interpretation: [div#](x0, x1) = x1 + 0, [quot#](x0, x1, x2) = x1 + x2 + 0, [0] = 1, [s](x0) = 0 orientation: quot#(x,0(),s(z)) = 1 >= 0 = div#(x,s(z)) div#(x,y) = y + 0 >= y + 0 = quot#(x,y,y) problem: DPs: div#(x,y) -> quot#(x,y,y) TRS: Restore Modifier: DPs: div#(x,y) -> quot#(x,y,y) TRS: p(0()) -> 0() p(s(x)) -> x plus(x,0()) -> x plus(0(),y) -> y plus(s(x),y) -> s(plus(x,y)) plus(s(x),y) -> s(plus(p(s(x)),y)) plus(x,s(y)) -> s(plus(x,p(s(y)))) times(0(),y) -> 0() times(s(0()),y) -> y times(s(x),y) -> plus(y,times(x,y)) div(0(),y) -> 0() div(x,y) -> quot(x,y,y) quot(zero(y),s(y),z) -> 0() quot(s(x),s(y),z) -> quot(x,y,z) quot(x,0(),s(z)) -> s(div(x,s(z))) div(div(x,y),z) -> div(x,times(zero(y),z)) eq(0(),0()) -> true() eq(s(x),0()) -> false() eq(0(),s(y)) -> false() eq(s(x),s(y)) -> eq(x,y) divides(y,x) -> eq(x,times(div(x,y),y)) prime(s(s(x))) -> pr(s(s(x)),s(x)) pr(x,s(0())) -> true() pr(x,s(s(y))) -> if(divides(s(s(y)),x),x,s(y)) if(true(),x,y) -> false() if(false(),x,y) -> pr(x,y) zero(div(x,x)) -> x zero(divides(x,x)) -> x zero(times(x,x)) -> x zero(quot(x,x,x)) -> x zero(s(x)) -> if(eq(x,s(0())),plus(zero(0()),0()),s(plus(0(),zero(0())))) SCC Processor: #sccs: 0 #rules: 0 #arcs: 8/1 DPs: if#(false(),x,y) -> pr#(x,y) pr#(x,s(s(y))) -> if#(divides(s(s(y)),x),x,s(y)) TRS: p(0()) -> 0() p(s(x)) -> x plus(x,0()) -> x plus(0(),y) -> y plus(s(x),y) -> s(plus(x,y)) plus(s(x),y) -> s(plus(p(s(x)),y)) plus(x,s(y)) -> s(plus(x,p(s(y)))) times(0(),y) -> 0() times(s(0()),y) -> y times(s(x),y) -> plus(y,times(x,y)) div(0(),y) -> 0() div(x,y) -> quot(x,y,y) quot(zero(y),s(y),z) -> 0() quot(s(x),s(y),z) -> quot(x,y,z) quot(x,0(),s(z)) -> s(div(x,s(z))) div(div(x,y),z) -> div(x,times(zero(y),z)) eq(0(),0()) -> true() eq(s(x),0()) -> false() eq(0(),s(y)) -> false() eq(s(x),s(y)) -> eq(x,y) divides(y,x) -> eq(x,times(div(x,y),y)) prime(s(s(x))) -> pr(s(s(x)),s(x)) pr(x,s(0())) -> true() pr(x,s(s(y))) -> if(divides(s(s(y)),x),x,s(y)) if(true(),x,y) -> false() if(false(),x,y) -> pr(x,y) zero(div(x,x)) -> x zero(divides(x,x)) -> x zero(times(x,x)) -> x zero(quot(x,x,x)) -> x zero(s(x)) -> if(eq(x,s(0())),plus(zero(0()),0()),s(plus(0(),zero(0())))) Size-Change Termination Processor: DPs: TRS: p(0()) -> 0() p(s(x)) -> x plus(x,0()) -> x plus(0(),y) -> y plus(s(x),y) -> s(plus(x,y)) plus(s(x),y) -> s(plus(p(s(x)),y)) plus(x,s(y)) -> s(plus(x,p(s(y)))) times(0(),y) -> 0() times(s(0()),y) -> y times(s(x),y) -> plus(y,times(x,y)) div(0(),y) -> 0() div(x,y) -> quot(x,y,y) quot(zero(y),s(y),z) -> 0() quot(s(x),s(y),z) -> quot(x,y,z) quot(x,0(),s(z)) -> s(div(x,s(z))) div(div(x,y),z) -> div(x,times(zero(y),z)) eq(0(),0()) -> true() eq(s(x),0()) -> false() eq(0(),s(y)) -> false() eq(s(x),s(y)) -> eq(x,y) divides(y,x) -> eq(x,times(div(x,y),y)) prime(s(s(x))) -> pr(s(s(x)),s(x)) pr(x,s(0())) -> true() pr(x,s(s(y))) -> if(divides(s(s(y)),x),x,s(y)) if(true(),x,y) -> false() if(false(),x,y) -> pr(x,y) zero(div(x,x)) -> x zero(divides(x,x)) -> x zero(times(x,x)) -> x zero(quot(x,x,x)) -> x zero(s(x)) -> if(eq(x,s(0())),plus(zero(0()),0()),s(plus(0(),zero(0())))) The DP: if#(false(),x,y) -> pr#(x,y) has the edges: 1 >= 0 2 >= 1 The DP: pr#(x,s(s(y))) -> if#(divides(s(s(y)),x),x,s(y)) has the edges: 0 >= 1 1 > 2 Qed DPs: times#(s(x),y) -> times#(x,y) TRS: p(0()) -> 0() p(s(x)) -> x plus(x,0()) -> x plus(0(),y) -> y plus(s(x),y) -> s(plus(x,y)) plus(s(x),y) -> s(plus(p(s(x)),y)) plus(x,s(y)) -> s(plus(x,p(s(y)))) times(0(),y) -> 0() times(s(0()),y) -> y times(s(x),y) -> plus(y,times(x,y)) div(0(),y) -> 0() div(x,y) -> quot(x,y,y) quot(zero(y),s(y),z) -> 0() quot(s(x),s(y),z) -> quot(x,y,z) quot(x,0(),s(z)) -> s(div(x,s(z))) div(div(x,y),z) -> div(x,times(zero(y),z)) eq(0(),0()) -> true() eq(s(x),0()) -> false() eq(0(),s(y)) -> false() eq(s(x),s(y)) -> eq(x,y) divides(y,x) -> eq(x,times(div(x,y),y)) prime(s(s(x))) -> pr(s(s(x)),s(x)) pr(x,s(0())) -> true() pr(x,s(s(y))) -> if(divides(s(s(y)),x),x,s(y)) if(true(),x,y) -> false() if(false(),x,y) -> pr(x,y) zero(div(x,x)) -> x zero(divides(x,x)) -> x zero(times(x,x)) -> x zero(quot(x,x,x)) -> x zero(s(x)) -> if(eq(x,s(0())),plus(zero(0()),0()),s(plus(0(),zero(0())))) Subterm Criterion Processor: simple projection: pi(times#) = 0 problem: DPs: TRS: p(0()) -> 0() p(s(x)) -> x plus(x,0()) -> x plus(0(),y) -> y plus(s(x),y) -> s(plus(x,y)) plus(s(x),y) -> s(plus(p(s(x)),y)) plus(x,s(y)) -> s(plus(x,p(s(y)))) times(0(),y) -> 0() times(s(0()),y) -> y times(s(x),y) -> plus(y,times(x,y)) div(0(),y) -> 0() div(x,y) -> quot(x,y,y) quot(zero(y),s(y),z) -> 0() quot(s(x),s(y),z) -> quot(x,y,z) quot(x,0(),s(z)) -> s(div(x,s(z))) div(div(x,y),z) -> div(x,times(zero(y),z)) eq(0(),0()) -> true() eq(s(x),0()) -> false() eq(0(),s(y)) -> false() eq(s(x),s(y)) -> eq(x,y) divides(y,x) -> eq(x,times(div(x,y),y)) prime(s(s(x))) -> pr(s(s(x)),s(x)) pr(x,s(0())) -> true() pr(x,s(s(y))) -> if(divides(s(s(y)),x),x,s(y)) if(true(),x,y) -> false() if(false(),x,y) -> pr(x,y) zero(div(x,x)) -> x zero(divides(x,x)) -> x zero(times(x,x)) -> x zero(quot(x,x,x)) -> x zero(s(x)) -> if(eq(x,s(0())),plus(zero(0()),0()),s(plus(0(),zero(0())))) Qed DPs: eq#(s(x),s(y)) -> eq#(x,y) TRS: p(0()) -> 0() p(s(x)) -> x plus(x,0()) -> x plus(0(),y) -> y plus(s(x),y) -> s(plus(x,y)) plus(s(x),y) -> s(plus(p(s(x)),y)) plus(x,s(y)) -> s(plus(x,p(s(y)))) times(0(),y) -> 0() times(s(0()),y) -> y times(s(x),y) -> plus(y,times(x,y)) div(0(),y) -> 0() div(x,y) -> quot(x,y,y) quot(zero(y),s(y),z) -> 0() quot(s(x),s(y),z) -> quot(x,y,z) quot(x,0(),s(z)) -> s(div(x,s(z))) div(div(x,y),z) -> div(x,times(zero(y),z)) eq(0(),0()) -> true() eq(s(x),0()) -> false() eq(0(),s(y)) -> false() eq(s(x),s(y)) -> eq(x,y) divides(y,x) -> eq(x,times(div(x,y),y)) prime(s(s(x))) -> pr(s(s(x)),s(x)) pr(x,s(0())) -> true() pr(x,s(s(y))) -> if(divides(s(s(y)),x),x,s(y)) if(true(),x,y) -> false() if(false(),x,y) -> pr(x,y) zero(div(x,x)) -> x zero(divides(x,x)) -> x zero(times(x,x)) -> x zero(quot(x,x,x)) -> x zero(s(x)) -> if(eq(x,s(0())),plus(zero(0()),0()),s(plus(0(),zero(0())))) Subterm Criterion Processor: simple projection: pi(eq#) = 0 problem: DPs: TRS: p(0()) -> 0() p(s(x)) -> x plus(x,0()) -> x plus(0(),y) -> y plus(s(x),y) -> s(plus(x,y)) plus(s(x),y) -> s(plus(p(s(x)),y)) plus(x,s(y)) -> s(plus(x,p(s(y)))) times(0(),y) -> 0() times(s(0()),y) -> y times(s(x),y) -> plus(y,times(x,y)) div(0(),y) -> 0() div(x,y) -> quot(x,y,y) quot(zero(y),s(y),z) -> 0() quot(s(x),s(y),z) -> quot(x,y,z) quot(x,0(),s(z)) -> s(div(x,s(z))) div(div(x,y),z) -> div(x,times(zero(y),z)) eq(0(),0()) -> true() eq(s(x),0()) -> false() eq(0(),s(y)) -> false() eq(s(x),s(y)) -> eq(x,y) divides(y,x) -> eq(x,times(div(x,y),y)) prime(s(s(x))) -> pr(s(s(x)),s(x)) pr(x,s(0())) -> true() pr(x,s(s(y))) -> if(divides(s(s(y)),x),x,s(y)) if(true(),x,y) -> false() if(false(),x,y) -> pr(x,y) zero(div(x,x)) -> x zero(divides(x,x)) -> x zero(times(x,x)) -> x zero(quot(x,x,x)) -> x zero(s(x)) -> if(eq(x,s(0())),plus(zero(0()),0()),s(plus(0(),zero(0())))) Qed DPs: plus#(s(x),y) -> plus#(x,y) plus#(s(x),y) -> plus#(p(s(x)),y) plus#(x,s(y)) -> plus#(x,p(s(y))) TRS: p(0()) -> 0() p(s(x)) -> x plus(x,0()) -> x plus(0(),y) -> y plus(s(x),y) -> s(plus(x,y)) plus(s(x),y) -> s(plus(p(s(x)),y)) plus(x,s(y)) -> s(plus(x,p(s(y)))) times(0(),y) -> 0() times(s(0()),y) -> y times(s(x),y) -> plus(y,times(x,y)) div(0(),y) -> 0() div(x,y) -> quot(x,y,y) quot(zero(y),s(y),z) -> 0() quot(s(x),s(y),z) -> quot(x,y,z) quot(x,0(),s(z)) -> s(div(x,s(z))) div(div(x,y),z) -> div(x,times(zero(y),z)) eq(0(),0()) -> true() eq(s(x),0()) -> false() eq(0(),s(y)) -> false() eq(s(x),s(y)) -> eq(x,y) divides(y,x) -> eq(x,times(div(x,y),y)) prime(s(s(x))) -> pr(s(s(x)),s(x)) pr(x,s(0())) -> true() pr(x,s(s(y))) -> if(divides(s(s(y)),x),x,s(y)) if(true(),x,y) -> false() if(false(),x,y) -> pr(x,y) zero(div(x,x)) -> x zero(divides(x,x)) -> x zero(times(x,x)) -> x zero(quot(x,x,x)) -> x zero(s(x)) -> if(eq(x,s(0())),plus(zero(0()),0()),s(plus(0(),zero(0())))) Subterm Criterion Processor: simple projection: pi(p) = 0 pi(plus#) = 0 problem: DPs: plus#(s(x),y) -> plus#(p(s(x)),y) plus#(x,s(y)) -> plus#(x,p(s(y))) TRS: p(0()) -> 0() p(s(x)) -> x plus(x,0()) -> x plus(0(),y) -> y plus(s(x),y) -> s(plus(x,y)) plus(s(x),y) -> s(plus(p(s(x)),y)) plus(x,s(y)) -> s(plus(x,p(s(y)))) times(0(),y) -> 0() times(s(0()),y) -> y times(s(x),y) -> plus(y,times(x,y)) div(0(),y) -> 0() div(x,y) -> quot(x,y,y) quot(zero(y),s(y),z) -> 0() quot(s(x),s(y),z) -> quot(x,y,z) quot(x,0(),s(z)) -> s(div(x,s(z))) div(div(x,y),z) -> div(x,times(zero(y),z)) eq(0(),0()) -> true() eq(s(x),0()) -> false() eq(0(),s(y)) -> false() eq(s(x),s(y)) -> eq(x,y) divides(y,x) -> eq(x,times(div(x,y),y)) prime(s(s(x))) -> pr(s(s(x)),s(x)) pr(x,s(0())) -> true() pr(x,s(s(y))) -> if(divides(s(s(y)),x),x,s(y)) if(true(),x,y) -> false() if(false(),x,y) -> pr(x,y) zero(div(x,x)) -> x zero(divides(x,x)) -> x zero(times(x,x)) -> x zero(quot(x,x,x)) -> x zero(s(x)) -> if(eq(x,s(0())),plus(zero(0()),0()),s(plus(0(),zero(0())))) Usable Rule Processor: DPs: plus#(s(x),y) -> plus#(p(s(x)),y) plus#(x,s(y)) -> plus#(x,p(s(y))) TRS: p(s(x)) -> x Semantic Labeling Processor: dimension: 2 usable rules: interpretation: [0 1] [0] [p](x0) = [1 1]x0 + [1], [1 1] [1] [s](x0) = [1 1]x0 + [0] labeled: plus# usable (for model): plus# s p argument filtering: pi(p) = [] pi(s) = 0 pi(plus#) = [] precedence: plus# ~ s ~ p problem: DPs: plus#(s(x),y) -> plus#(p(s(x)),y) TRS: p(s(x)) -> x Restore Modifier: DPs: plus#(s(x),y) -> plus#(p(s(x)),y) TRS: p(0()) -> 0() p(s(x)) -> x plus(x,0()) -> x plus(0(),y) -> y plus(s(x),y) -> s(plus(x,y)) plus(s(x),y) -> s(plus(p(s(x)),y)) plus(x,s(y)) -> s(plus(x,p(s(y)))) times(0(),y) -> 0() times(s(0()),y) -> y times(s(x),y) -> plus(y,times(x,y)) div(0(),y) -> 0() div(x,y) -> quot(x,y,y) quot(zero(y),s(y),z) -> 0() quot(s(x),s(y),z) -> quot(x,y,z) quot(x,0(),s(z)) -> s(div(x,s(z))) div(div(x,y),z) -> div(x,times(zero(y),z)) eq(0(),0()) -> true() eq(s(x),0()) -> false() eq(0(),s(y)) -> false() eq(s(x),s(y)) -> eq(x,y) divides(y,x) -> eq(x,times(div(x,y),y)) prime(s(s(x))) -> pr(s(s(x)),s(x)) pr(x,s(0())) -> true() pr(x,s(s(y))) -> if(divides(s(s(y)),x),x,s(y)) if(true(),x,y) -> false() if(false(),x,y) -> pr(x,y) zero(div(x,x)) -> x zero(divides(x,x)) -> x zero(times(x,x)) -> x zero(quot(x,x,x)) -> x zero(s(x)) -> if(eq(x,s(0())),plus(zero(0()),0()),s(plus(0(),zero(0())))) Usable Rule Processor: DPs: plus#(s(x),y) -> plus#(p(s(x)),y) TRS: p(s(x)) -> x Semantic Labeling Processor: dimension: 2 usable rules: interpretation: [1 0] [p](x0) = [1 0]x0, [1 1] [0] [s](x0) = [1 1]x0 + [1] labeled: plus# usable (for model): plus# s p argument filtering: pi(p) = 0 pi(s) = 0 pi(plus#) = [] precedence: plus# ~ s ~ p problem: DPs: TRS: p(s(x)) -> x Qed