YES(?,O(n^1)) Problem: q0(0(x1)) -> 0'(q1(x1)) q1(0(x1)) -> 0(q1(x1)) q1(1'(x1)) -> 1'(q1(x1)) 0(q1(1(x1))) -> q2(0(1'(x1))) 0'(q1(1(x1))) -> q2(0'(1'(x1))) 1'(q1(1(x1))) -> q2(1'(1'(x1))) 0(q2(0(x1))) -> q2(0(0(x1))) 0'(q2(0(x1))) -> q2(0'(0(x1))) 1'(q2(0(x1))) -> q2(1'(0(x1))) 0(q2(1'(x1))) -> q2(0(1'(x1))) 0'(q2(1'(x1))) -> q2(0'(1'(x1))) 1'(q2(1'(x1))) -> q2(1'(1'(x1))) q2(0'(x1)) -> 0'(q0(x1)) q0(1'(x1)) -> 1'(q3(x1)) q3(1'(x1)) -> 1'(q3(x1)) q3(b(x1)) -> b(q4(x1)) Proof: Bounds Processor: bound: 1 enrichment: match automaton: final states: {10,9,8,7,6,5,4} transitions: b1(12) -> 13* q41(19) -> 20* q41(21) -> 22* q41(11) -> 12* q00(2) -> 4* q00(1) -> 4* q00(3) -> 4* 00(2) -> 6* 00(1) -> 6* 00(3) -> 6* 0'0(2) -> 7* 0'0(1) -> 7* 0'0(3) -> 7* q10(2) -> 5* q10(1) -> 5* q10(3) -> 5* 1'0(2) -> 8* 1'0(1) -> 8* 1'0(3) -> 8* 10(2) -> 1* 10(1) -> 1* 10(3) -> 1* q20(2) -> 9* q20(1) -> 9* q20(3) -> 9* q30(2) -> 10* q30(1) -> 10* q30(3) -> 10* b0(2) -> 2* b0(1) -> 2* b0(3) -> 2* q40(2) -> 3* q40(1) -> 3* q40(3) -> 3* 1 -> 19* 2 -> 11* 3 -> 21* 13 -> 10* 20 -> 12* 22 -> 12* problem: Qed