MAYBE We are left with following problem, upon which TcT provides the certificate MAYBE. Strict Trs: { a(a(x, y), z) -> a(x, a(y, z)) , a(lambda(x), y) -> lambda(a(x, p(1(), a(y, t())))) , a(p(x, y), z) -> p(a(x, z), a(y, z)) , a(1(), p(x, y)) -> x , a(1(), id()) -> 1() , a(t(), p(x, y)) -> y , a(t(), id()) -> t() , a(id(), x) -> x } Obligation: runtime complexity Answer: MAYBE None of the processors succeeded. Details of failed attempt(s): ----------------------------- 1) 'WithProblem (timeout of 60 seconds)' failed due to the following reason: Computation stopped due to timeout after 60.0 seconds. 2) 'Best' failed due to the following reason: None of the processors succeeded. Details of failed attempt(s): ----------------------------- 1) 'WithProblem (timeout of 30 seconds) (timeout of 60 seconds)' failed due to the following reason: Computation stopped due to timeout after 30.0 seconds. 2) 'Best' failed due to the following reason: None of the processors succeeded. Details of failed attempt(s): ----------------------------- 1) 'bsearch-popstar (timeout of 60 seconds)' failed due to the following reason: The processor is inapplicable, reason: Processor only applicable for innermost runtime complexity analysis 2) 'Polynomial Path Order (PS) (timeout of 60 seconds)' failed due to the following reason: The processor is inapplicable, reason: Processor only applicable for innermost runtime complexity analysis 3) 'Fastest (timeout of 5 seconds) (timeout of 60 seconds)' failed due to the following reason: None of the processors succeeded. Details of failed attempt(s): ----------------------------- 1) 'Bounds with perSymbol-enrichment and initial automaton 'match'' failed due to the following reason: match-boundness of the problem could not be verified. 2) 'Bounds with minimal-enrichment and initial automaton 'match'' failed due to the following reason: match-boundness of the problem could not be verified. 3) 'Innermost Weak Dependency Pairs (timeout of 60 seconds)' failed due to the following reason: We add the following weak dependency pairs: Strict DPs: { a^#(a(x, y), z) -> c_1(a^#(x, a(y, z))) , a^#(lambda(x), y) -> c_2(a^#(x, p(1(), a(y, t())))) , a^#(p(x, y), z) -> c_3(a^#(x, z), a^#(y, z)) , a^#(1(), p(x, y)) -> c_4(x) , a^#(1(), id()) -> c_5() , a^#(t(), p(x, y)) -> c_6(y) , a^#(t(), id()) -> c_7() , a^#(id(), x) -> c_8(x) } and mark the set of starting terms. We are left with following problem, upon which TcT provides the certificate MAYBE. Strict DPs: { a^#(a(x, y), z) -> c_1(a^#(x, a(y, z))) , a^#(lambda(x), y) -> c_2(a^#(x, p(1(), a(y, t())))) , a^#(p(x, y), z) -> c_3(a^#(x, z), a^#(y, z)) , a^#(1(), p(x, y)) -> c_4(x) , a^#(1(), id()) -> c_5() , a^#(t(), p(x, y)) -> c_6(y) , a^#(t(), id()) -> c_7() , a^#(id(), x) -> c_8(x) } Strict Trs: { a(a(x, y), z) -> a(x, a(y, z)) , a(lambda(x), y) -> lambda(a(x, p(1(), a(y, t())))) , a(p(x, y), z) -> p(a(x, z), a(y, z)) , a(1(), p(x, y)) -> x , a(1(), id()) -> 1() , a(t(), p(x, y)) -> y , a(t(), id()) -> t() , a(id(), x) -> x } Obligation: runtime complexity Answer: MAYBE We estimate the number of application of {5,7} by applications of Pre({5,7}) = {1,3,4,6,8}. Here rules are labeled as follows: DPs: { 1: a^#(a(x, y), z) -> c_1(a^#(x, a(y, z))) , 2: a^#(lambda(x), y) -> c_2(a^#(x, p(1(), a(y, t())))) , 3: a^#(p(x, y), z) -> c_3(a^#(x, z), a^#(y, z)) , 4: a^#(1(), p(x, y)) -> c_4(x) , 5: a^#(1(), id()) -> c_5() , 6: a^#(t(), p(x, y)) -> c_6(y) , 7: a^#(t(), id()) -> c_7() , 8: a^#(id(), x) -> c_8(x) } We are left with following problem, upon which TcT provides the certificate MAYBE. Strict DPs: { a^#(a(x, y), z) -> c_1(a^#(x, a(y, z))) , a^#(lambda(x), y) -> c_2(a^#(x, p(1(), a(y, t())))) , a^#(p(x, y), z) -> c_3(a^#(x, z), a^#(y, z)) , a^#(1(), p(x, y)) -> c_4(x) , a^#(t(), p(x, y)) -> c_6(y) , a^#(id(), x) -> c_8(x) } Strict Trs: { a(a(x, y), z) -> a(x, a(y, z)) , a(lambda(x), y) -> lambda(a(x, p(1(), a(y, t())))) , a(p(x, y), z) -> p(a(x, z), a(y, z)) , a(1(), p(x, y)) -> x , a(1(), id()) -> 1() , a(t(), p(x, y)) -> y , a(t(), id()) -> t() , a(id(), x) -> x } Weak DPs: { a^#(1(), id()) -> c_5() , a^#(t(), id()) -> c_7() } Obligation: runtime complexity Answer: MAYBE Empty strict component of the problem is NOT empty. Arrrr..