MAYBE 884.22/297.04 MAYBE 884.22/297.04 884.22/297.04 We are left with following problem, upon which TcT provides the 884.22/297.04 certificate MAYBE. 884.22/297.04 884.22/297.04 Strict Trs: 884.22/297.04 { last(nil()) -> 0() 884.22/297.04 , last(cons(x, nil())) -> x 884.22/297.04 , last(cons(x, cons(y, xs))) -> last(cons(y, xs)) 884.22/297.04 , del(x, nil()) -> nil() 884.22/297.04 , del(x, cons(y, xs)) -> if(eq(x, y), x, y, xs) 884.22/297.04 , if(true(), x, y, xs) -> xs 884.22/297.04 , if(false(), x, y, xs) -> cons(y, del(x, xs)) 884.22/297.04 , eq(0(), 0()) -> true() 884.22/297.04 , eq(0(), s(y)) -> false() 884.22/297.04 , eq(s(x), 0()) -> false() 884.22/297.04 , eq(s(x), s(y)) -> eq(x, y) 884.22/297.04 , reverse(nil()) -> nil() 884.22/297.04 , reverse(cons(x, xs)) -> 884.22/297.04 cons(last(cons(x, xs)), 884.22/297.04 reverse(del(last(cons(x, xs)), cons(x, xs)))) } 884.22/297.04 Obligation: 884.22/297.04 runtime complexity 884.22/297.04 Answer: 884.22/297.04 MAYBE 884.22/297.04 884.22/297.04 None of the processors succeeded. 884.22/297.04 884.22/297.04 Details of failed attempt(s): 884.22/297.04 ----------------------------- 884.22/297.04 1) 'With Problem ... (timeout of 297 seconds)' failed due to the 884.22/297.04 following reason: 884.22/297.04 884.22/297.04 Computation stopped due to timeout after 297.0 seconds. 884.22/297.04 884.22/297.04 2) 'Best' failed due to the following reason: 884.22/297.04 884.22/297.04 None of the processors succeeded. 884.22/297.04 884.22/297.04 Details of failed attempt(s): 884.22/297.04 ----------------------------- 884.22/297.04 1) 'With Problem ... (timeout of 148 seconds) (timeout of 297 884.22/297.04 seconds)' failed due to the following reason: 884.22/297.04 884.22/297.04 Computation stopped due to timeout after 148.0 seconds. 884.22/297.04 884.22/297.04 2) 'Fastest (timeout of 24 seconds) (timeout of 297 seconds)' 884.22/297.04 failed due to the following reason: 884.22/297.04 884.22/297.04 None of the processors succeeded. 884.22/297.04 884.22/297.04 Details of failed attempt(s): 884.22/297.04 ----------------------------- 884.22/297.04 1) 'Bounds with minimal-enrichment and initial automaton 'match'' 884.22/297.04 failed due to the following reason: 884.22/297.04 884.22/297.04 match-boundness of the problem could not be verified. 884.22/297.04 884.22/297.04 2) 'Bounds with perSymbol-enrichment and initial automaton 'match'' 884.22/297.04 failed due to the following reason: 884.22/297.04 884.22/297.04 match-boundness of the problem could not be verified. 884.22/297.04 884.22/297.04 884.22/297.04 3) 'Best' failed due to the following reason: 884.22/297.04 884.22/297.04 None of the processors succeeded. 884.22/297.04 884.22/297.04 Details of failed attempt(s): 884.22/297.04 ----------------------------- 884.22/297.04 1) 'bsearch-popstar (timeout of 297 seconds)' failed due to the 884.22/297.04 following reason: 884.22/297.04 884.22/297.04 The processor is inapplicable, reason: 884.22/297.04 Processor only applicable for innermost runtime complexity analysis 884.22/297.04 884.22/297.04 2) 'Polynomial Path Order (PS) (timeout of 297 seconds)' failed due 884.22/297.04 to the following reason: 884.22/297.04 884.22/297.04 The processor is inapplicable, reason: 884.22/297.04 Processor only applicable for innermost runtime complexity analysis 884.22/297.04 884.22/297.04 884.22/297.04 884.22/297.04 3) 'Weak Dependency Pairs (timeout of 297 seconds)' failed due to 884.22/297.04 the following reason: 884.22/297.04 884.22/297.04 We add the following weak dependency pairs: 884.22/297.04 884.22/297.04 Strict DPs: 884.22/297.04 { last^#(nil()) -> c_1() 884.22/297.04 , last^#(cons(x, nil())) -> c_2(x) 884.22/297.04 , last^#(cons(x, cons(y, xs))) -> c_3(last^#(cons(y, xs))) 884.22/297.04 , del^#(x, nil()) -> c_4() 884.22/297.04 , del^#(x, cons(y, xs)) -> c_5(if^#(eq(x, y), x, y, xs)) 884.22/297.04 , if^#(true(), x, y, xs) -> c_6(xs) 884.22/297.04 , if^#(false(), x, y, xs) -> c_7(y, del^#(x, xs)) 884.22/297.04 , eq^#(0(), 0()) -> c_8() 884.22/297.04 , eq^#(0(), s(y)) -> c_9() 884.22/297.04 , eq^#(s(x), 0()) -> c_10() 884.22/297.04 , eq^#(s(x), s(y)) -> c_11(eq^#(x, y)) 884.22/297.04 , reverse^#(nil()) -> c_12() 884.22/297.04 , reverse^#(cons(x, xs)) -> 884.22/297.04 c_13(last^#(cons(x, xs)), 884.22/297.04 reverse^#(del(last(cons(x, xs)), cons(x, xs)))) } 884.22/297.04 884.22/297.04 and mark the set of starting terms. 884.22/297.04 884.22/297.04 We are left with following problem, upon which TcT provides the 884.22/297.04 certificate MAYBE. 884.22/297.04 884.22/297.04 Strict DPs: 884.22/297.04 { last^#(nil()) -> c_1() 884.22/297.04 , last^#(cons(x, nil())) -> c_2(x) 884.22/297.04 , last^#(cons(x, cons(y, xs))) -> c_3(last^#(cons(y, xs))) 884.22/297.04 , del^#(x, nil()) -> c_4() 884.22/297.04 , del^#(x, cons(y, xs)) -> c_5(if^#(eq(x, y), x, y, xs)) 884.22/297.04 , if^#(true(), x, y, xs) -> c_6(xs) 884.22/297.04 , if^#(false(), x, y, xs) -> c_7(y, del^#(x, xs)) 884.22/297.04 , eq^#(0(), 0()) -> c_8() 884.22/297.04 , eq^#(0(), s(y)) -> c_9() 884.22/297.04 , eq^#(s(x), 0()) -> c_10() 884.22/297.04 , eq^#(s(x), s(y)) -> c_11(eq^#(x, y)) 884.22/297.04 , reverse^#(nil()) -> c_12() 884.22/297.04 , reverse^#(cons(x, xs)) -> 884.22/297.04 c_13(last^#(cons(x, xs)), 884.22/297.04 reverse^#(del(last(cons(x, xs)), cons(x, xs)))) } 884.22/297.04 Strict Trs: 884.22/297.04 { last(nil()) -> 0() 884.22/297.04 , last(cons(x, nil())) -> x 884.22/297.04 , last(cons(x, cons(y, xs))) -> last(cons(y, xs)) 884.22/297.04 , del(x, nil()) -> nil() 884.22/297.04 , del(x, cons(y, xs)) -> if(eq(x, y), x, y, xs) 884.22/297.04 , if(true(), x, y, xs) -> xs 884.22/297.04 , if(false(), x, y, xs) -> cons(y, del(x, xs)) 884.22/297.04 , eq(0(), 0()) -> true() 884.22/297.04 , eq(0(), s(y)) -> false() 884.22/297.04 , eq(s(x), 0()) -> false() 884.22/297.04 , eq(s(x), s(y)) -> eq(x, y) 884.22/297.04 , reverse(nil()) -> nil() 884.22/297.04 , reverse(cons(x, xs)) -> 884.22/297.04 cons(last(cons(x, xs)), 884.22/297.04 reverse(del(last(cons(x, xs)), cons(x, xs)))) } 884.22/297.04 Obligation: 884.22/297.04 runtime complexity 884.22/297.04 Answer: 884.22/297.04 MAYBE 884.22/297.04 884.22/297.04 We estimate the number of application of {1,4,8,9,10,12} by 884.22/297.04 applications of Pre({1,4,8,9,10,12}) = {2,6,7,11,13}. Here rules 884.22/297.04 are labeled as follows: 884.22/297.04 884.22/297.04 DPs: 884.22/297.04 { 1: last^#(nil()) -> c_1() 884.22/297.04 , 2: last^#(cons(x, nil())) -> c_2(x) 884.22/297.04 , 3: last^#(cons(x, cons(y, xs))) -> c_3(last^#(cons(y, xs))) 884.22/297.04 , 4: del^#(x, nil()) -> c_4() 884.22/297.04 , 5: del^#(x, cons(y, xs)) -> c_5(if^#(eq(x, y), x, y, xs)) 884.22/297.04 , 6: if^#(true(), x, y, xs) -> c_6(xs) 884.22/297.04 , 7: if^#(false(), x, y, xs) -> c_7(y, del^#(x, xs)) 884.22/297.04 , 8: eq^#(0(), 0()) -> c_8() 884.22/297.04 , 9: eq^#(0(), s(y)) -> c_9() 884.22/297.04 , 10: eq^#(s(x), 0()) -> c_10() 884.22/297.04 , 11: eq^#(s(x), s(y)) -> c_11(eq^#(x, y)) 884.22/297.04 , 12: reverse^#(nil()) -> c_12() 884.22/297.04 , 13: reverse^#(cons(x, xs)) -> 884.22/297.04 c_13(last^#(cons(x, xs)), 884.22/297.04 reverse^#(del(last(cons(x, xs)), cons(x, xs)))) } 884.22/297.04 884.22/297.04 We are left with following problem, upon which TcT provides the 884.22/297.04 certificate MAYBE. 884.22/297.04 884.22/297.04 Strict DPs: 884.22/297.04 { last^#(cons(x, nil())) -> c_2(x) 884.22/297.04 , last^#(cons(x, cons(y, xs))) -> c_3(last^#(cons(y, xs))) 884.22/297.04 , del^#(x, cons(y, xs)) -> c_5(if^#(eq(x, y), x, y, xs)) 884.22/297.04 , if^#(true(), x, y, xs) -> c_6(xs) 884.22/297.04 , if^#(false(), x, y, xs) -> c_7(y, del^#(x, xs)) 884.22/297.04 , eq^#(s(x), s(y)) -> c_11(eq^#(x, y)) 884.22/297.04 , reverse^#(cons(x, xs)) -> 884.22/297.04 c_13(last^#(cons(x, xs)), 884.22/297.04 reverse^#(del(last(cons(x, xs)), cons(x, xs)))) } 884.22/297.04 Strict Trs: 884.22/297.04 { last(nil()) -> 0() 884.22/297.04 , last(cons(x, nil())) -> x 884.22/297.04 , last(cons(x, cons(y, xs))) -> last(cons(y, xs)) 884.22/297.04 , del(x, nil()) -> nil() 884.22/297.04 , del(x, cons(y, xs)) -> if(eq(x, y), x, y, xs) 884.22/297.04 , if(true(), x, y, xs) -> xs 884.22/297.04 , if(false(), x, y, xs) -> cons(y, del(x, xs)) 884.22/297.04 , eq(0(), 0()) -> true() 884.22/297.04 , eq(0(), s(y)) -> false() 884.22/297.04 , eq(s(x), 0()) -> false() 884.22/297.04 , eq(s(x), s(y)) -> eq(x, y) 884.22/297.04 , reverse(nil()) -> nil() 884.22/297.04 , reverse(cons(x, xs)) -> 884.22/297.04 cons(last(cons(x, xs)), 884.22/297.04 reverse(del(last(cons(x, xs)), cons(x, xs)))) } 884.22/297.04 Weak DPs: 884.22/297.04 { last^#(nil()) -> c_1() 884.22/297.04 , del^#(x, nil()) -> c_4() 884.22/297.04 , eq^#(0(), 0()) -> c_8() 884.22/297.04 , eq^#(0(), s(y)) -> c_9() 884.22/297.04 , eq^#(s(x), 0()) -> c_10() 884.22/297.04 , reverse^#(nil()) -> c_12() } 884.22/297.04 Obligation: 884.22/297.04 runtime complexity 884.22/297.04 Answer: 884.22/297.04 MAYBE 884.22/297.04 884.22/297.04 Empty strict component of the problem is NOT empty. 884.22/297.04 884.22/297.04 884.22/297.04 Arrrr.. 884.54/297.32 EOF