MAYBE We are left with following problem, upon which TcT provides the certificate MAYBE. Strict Trs: { from(X) -> cons(X) , length() -> 0() , length() -> s(length1()) , length1() -> length() } Obligation: innermost runtime complexity Answer: MAYBE We add following weak dependency pairs: Strict DPs: { from^#(X) -> c_1() , length^#() -> c_2() , length^#() -> c_3(length1^#()) , length1^#() -> c_4(length^#()) } and mark the set of starting terms. We are left with following problem, upon which TcT provides the certificate MAYBE. Strict DPs: { from^#(X) -> c_1() , length^#() -> c_2() , length^#() -> c_3(length1^#()) , length1^#() -> c_4(length^#()) } Strict Trs: { from(X) -> cons(X) , length() -> 0() , length() -> s(length1()) , length1() -> length() } Obligation: innermost runtime complexity Answer: MAYBE No rule is usable, rules are removed from the input problem. We are left with following problem, upon which TcT provides the certificate MAYBE. Strict DPs: { from^#(X) -> c_1() , length^#() -> c_2() , length^#() -> c_3(length1^#()) , length1^#() -> c_4(length^#()) } Obligation: innermost runtime complexity Answer: MAYBE The weightgap principle applies (using the following constant growth matrix-interpretation) The following argument positions are usable: Uargs(c_3) = {1}, Uargs(c_4) = {1} TcT has computed following constructor-restricted matrix interpretation. [from^#](x1) = [1] [c_1] = [0] [length^#] = [1] [c_2] = [0] [c_3](x1) = [1] x1 + [2] [length1^#] = [1] [c_4](x1) = [1] x1 + [2] This order satisfies following ordering constraints: Further, it can be verified that all rules not oriented are covered by the weightgap condition. We are left with following problem, upon which TcT provides the certificate MAYBE. Strict DPs: { length^#() -> c_3(length1^#()) , length1^#() -> c_4(length^#()) } Weak DPs: { from^#(X) -> c_1() , length^#() -> c_2() } Obligation: innermost runtime complexity Answer: MAYBE The following weak DPs constitute a sub-graph of the DG that is closed under successors. The DPs are removed. { from^#(X) -> c_1() , length^#() -> c_2() } We are left with following problem, upon which TcT provides the certificate MAYBE. Strict DPs: { length^#() -> c_3(length1^#()) , length1^#() -> c_4(length^#()) } Obligation: innermost runtime complexity Answer: MAYBE None of the processors succeeded. Details of failed attempt(s): ----------------------------- 1) 'matrices' failed due to the following reason: None of the processors succeeded. Details of failed attempt(s): ----------------------------- 1) 'matrix interpretation of dimension 4' failed due to the following reason: The input cannot be shown compatible 2) 'matrix interpretation of dimension 3' failed due to the following reason: The input cannot be shown compatible 3) 'matrix interpretation of dimension 3' failed due to the following reason: The input cannot be shown compatible 4) 'matrix interpretation of dimension 2' failed due to the following reason: The input cannot be shown compatible 5) 'matrix interpretation of dimension 2' failed due to the following reason: The input cannot be shown compatible 6) 'matrix interpretation of dimension 1' failed due to the following reason: The input cannot be shown compatible 2) 'empty' failed due to the following reason: Empty strict component of the problem is NOT empty. Arrrr..