YES(?,O(n^1)) Problem: add(0(),x) -> x add(s(x),y) -> s(add(x,y)) Proof: Bounds Processor: bound: 1 enrichment: match automaton: final states: {3} transitions: s1(4) -> 4,3 add1(1,2) -> 4* add1(2,1) -> 4* add1(1,1) -> 4* add1(2,2) -> 4* add0(1,2) -> 3* add0(2,1) -> 3* add0(1,1) -> 3* add0(2,2) -> 3* 00() -> 1* s0(2) -> 2* s0(1) -> 2* 1 -> 4,3 2 -> 4,3 problem: Qed