MAYBE 819.18/297.03 MAYBE 819.18/297.03 819.18/297.03 We are left with following problem, upon which TcT provides the 819.18/297.03 certificate MAYBE. 819.18/297.03 819.18/297.03 Strict Trs: 819.18/297.03 { car(cons(x, l)) -> x 819.18/297.03 , cddr(cons(x, cons(y, l))) -> l 819.18/297.03 , cddr(cons(x, nil())) -> nil() 819.18/297.03 , cddr(nil()) -> nil() 819.18/297.03 , cadr(cons(x, cons(y, l))) -> y 819.18/297.03 , isZero(0()) -> true() 819.18/297.03 , isZero(s(x)) -> false() 819.18/297.03 , plus(x, y) -> ifplus(isZero(x), x, y) 819.18/297.03 , ifplus(true(), x, y) -> y 819.18/297.03 , ifplus(false(), x, y) -> s(plus(p(x), y)) 819.18/297.03 , p(0()) -> 0() 819.18/297.03 , p(s(x)) -> x 819.18/297.03 , times(x, y) -> iftimes(isZero(x), x, y) 819.18/297.03 , iftimes(true(), x, y) -> 0() 819.18/297.03 , iftimes(false(), x, y) -> plus(y, times(p(x), y)) 819.18/297.03 , shorter(cons(x, l), 0()) -> false() 819.18/297.03 , shorter(cons(x, l), s(y)) -> shorter(l, y) 819.18/297.03 , shorter(nil(), y) -> true() 819.18/297.03 , prod(l) -> if(shorter(l, 0()), shorter(l, s(0())), l) 819.18/297.03 , if(true(), b, l) -> s(0()) 819.18/297.03 , if(false(), b, l) -> if2(b, l) 819.18/297.03 , if2(true(), l) -> car(l) 819.18/297.03 , if2(false(), l) -> prod(cons(times(car(l), cadr(l)), cddr(l))) } 819.18/297.03 Obligation: 819.18/297.03 runtime complexity 819.18/297.03 Answer: 819.18/297.03 MAYBE 819.18/297.03 819.18/297.03 None of the processors succeeded. 819.18/297.03 819.18/297.03 Details of failed attempt(s): 819.18/297.03 ----------------------------- 819.18/297.03 1) 'With Problem ... (timeout of 297 seconds)' failed due to the 819.18/297.03 following reason: 819.18/297.03 819.18/297.03 Computation stopped due to timeout after 297.0 seconds. 819.18/297.03 819.18/297.03 2) 'Best' failed due to the following reason: 819.18/297.03 819.18/297.03 None of the processors succeeded. 819.18/297.03 819.18/297.03 Details of failed attempt(s): 819.18/297.03 ----------------------------- 819.18/297.03 1) 'With Problem ... (timeout of 148 seconds) (timeout of 297 819.18/297.03 seconds)' failed due to the following reason: 819.18/297.03 819.18/297.03 Computation stopped due to timeout after 148.0 seconds. 819.18/297.03 819.18/297.03 2) 'Best' failed due to the following reason: 819.18/297.03 819.18/297.03 None of the processors succeeded. 819.18/297.03 819.18/297.03 Details of failed attempt(s): 819.18/297.03 ----------------------------- 819.18/297.03 1) 'bsearch-popstar (timeout of 297 seconds)' failed due to the 819.18/297.03 following reason: 819.18/297.03 819.18/297.03 The processor is inapplicable, reason: 819.18/297.03 Processor only applicable for innermost runtime complexity analysis 819.18/297.03 819.18/297.03 2) 'Polynomial Path Order (PS) (timeout of 297 seconds)' failed due 819.18/297.03 to the following reason: 819.18/297.03 819.18/297.03 The processor is inapplicable, reason: 819.18/297.03 Processor only applicable for innermost runtime complexity analysis 819.18/297.03 819.18/297.03 819.18/297.03 3) 'Fastest (timeout of 24 seconds) (timeout of 297 seconds)' 819.18/297.03 failed due to the following reason: 819.18/297.03 819.18/297.03 None of the processors succeeded. 819.18/297.03 819.18/297.03 Details of failed attempt(s): 819.18/297.03 ----------------------------- 819.18/297.03 1) 'Bounds with minimal-enrichment and initial automaton 'match'' 819.18/297.03 failed due to the following reason: 819.18/297.03 819.18/297.03 match-boundness of the problem could not be verified. 819.18/297.03 819.18/297.03 2) 'Bounds with perSymbol-enrichment and initial automaton 'match'' 819.18/297.03 failed due to the following reason: 819.18/297.03 819.18/297.03 match-boundness of the problem could not be verified. 819.18/297.03 819.18/297.03 819.18/297.03 819.18/297.03 3) 'Weak Dependency Pairs (timeout of 297 seconds)' failed due to 819.18/297.03 the following reason: 819.18/297.03 819.18/297.03 We add the following weak dependency pairs: 819.18/297.03 819.18/297.03 Strict DPs: 819.18/297.03 { car^#(cons(x, l)) -> c_1(x) 819.18/297.03 , cddr^#(cons(x, cons(y, l))) -> c_2(l) 819.18/297.03 , cddr^#(cons(x, nil())) -> c_3() 819.18/297.03 , cddr^#(nil()) -> c_4() 819.18/297.03 , cadr^#(cons(x, cons(y, l))) -> c_5(y) 819.18/297.03 , isZero^#(0()) -> c_6() 819.18/297.03 , isZero^#(s(x)) -> c_7() 819.18/297.03 , plus^#(x, y) -> c_8(ifplus^#(isZero(x), x, y)) 819.18/297.03 , ifplus^#(true(), x, y) -> c_9(y) 819.18/297.03 , ifplus^#(false(), x, y) -> c_10(plus^#(p(x), y)) 819.18/297.03 , p^#(0()) -> c_11() 819.18/297.03 , p^#(s(x)) -> c_12(x) 819.18/297.03 , times^#(x, y) -> c_13(iftimes^#(isZero(x), x, y)) 819.18/297.03 , iftimes^#(true(), x, y) -> c_14() 819.18/297.03 , iftimes^#(false(), x, y) -> c_15(plus^#(y, times(p(x), y))) 819.18/297.03 , shorter^#(cons(x, l), 0()) -> c_16() 819.18/297.03 , shorter^#(cons(x, l), s(y)) -> c_17(shorter^#(l, y)) 819.18/297.03 , shorter^#(nil(), y) -> c_18() 819.18/297.03 , prod^#(l) -> c_19(if^#(shorter(l, 0()), shorter(l, s(0())), l)) 819.18/297.03 , if^#(true(), b, l) -> c_20() 819.18/297.03 , if^#(false(), b, l) -> c_21(if2^#(b, l)) 819.18/297.03 , if2^#(true(), l) -> c_22(car^#(l)) 819.18/297.03 , if2^#(false(), l) -> 819.18/297.03 c_23(prod^#(cons(times(car(l), cadr(l)), cddr(l)))) } 819.18/297.03 819.18/297.03 and mark the set of starting terms. 819.18/297.03 819.18/297.03 We are left with following problem, upon which TcT provides the 819.18/297.03 certificate MAYBE. 819.18/297.03 819.18/297.03 Strict DPs: 819.18/297.03 { car^#(cons(x, l)) -> c_1(x) 819.18/297.03 , cddr^#(cons(x, cons(y, l))) -> c_2(l) 819.18/297.03 , cddr^#(cons(x, nil())) -> c_3() 819.18/297.03 , cddr^#(nil()) -> c_4() 819.18/297.03 , cadr^#(cons(x, cons(y, l))) -> c_5(y) 819.18/297.03 , isZero^#(0()) -> c_6() 819.18/297.03 , isZero^#(s(x)) -> c_7() 819.18/297.03 , plus^#(x, y) -> c_8(ifplus^#(isZero(x), x, y)) 819.18/297.03 , ifplus^#(true(), x, y) -> c_9(y) 819.18/297.03 , ifplus^#(false(), x, y) -> c_10(plus^#(p(x), y)) 819.18/297.03 , p^#(0()) -> c_11() 819.18/297.03 , p^#(s(x)) -> c_12(x) 819.18/297.03 , times^#(x, y) -> c_13(iftimes^#(isZero(x), x, y)) 819.18/297.03 , iftimes^#(true(), x, y) -> c_14() 819.18/297.03 , iftimes^#(false(), x, y) -> c_15(plus^#(y, times(p(x), y))) 819.18/297.03 , shorter^#(cons(x, l), 0()) -> c_16() 819.18/297.03 , shorter^#(cons(x, l), s(y)) -> c_17(shorter^#(l, y)) 819.18/297.03 , shorter^#(nil(), y) -> c_18() 819.18/297.03 , prod^#(l) -> c_19(if^#(shorter(l, 0()), shorter(l, s(0())), l)) 819.18/297.03 , if^#(true(), b, l) -> c_20() 819.18/297.03 , if^#(false(), b, l) -> c_21(if2^#(b, l)) 819.18/297.03 , if2^#(true(), l) -> c_22(car^#(l)) 819.18/297.03 , if2^#(false(), l) -> 819.18/297.03 c_23(prod^#(cons(times(car(l), cadr(l)), cddr(l)))) } 819.18/297.03 Strict Trs: 819.18/297.03 { car(cons(x, l)) -> x 819.18/297.03 , cddr(cons(x, cons(y, l))) -> l 819.18/297.03 , cddr(cons(x, nil())) -> nil() 819.18/297.03 , cddr(nil()) -> nil() 819.18/297.03 , cadr(cons(x, cons(y, l))) -> y 819.18/297.03 , isZero(0()) -> true() 819.18/297.03 , isZero(s(x)) -> false() 819.18/297.03 , plus(x, y) -> ifplus(isZero(x), x, y) 819.18/297.03 , ifplus(true(), x, y) -> y 819.18/297.03 , ifplus(false(), x, y) -> s(plus(p(x), y)) 819.18/297.03 , p(0()) -> 0() 819.18/297.03 , p(s(x)) -> x 819.18/297.03 , times(x, y) -> iftimes(isZero(x), x, y) 819.18/297.03 , iftimes(true(), x, y) -> 0() 819.18/297.03 , iftimes(false(), x, y) -> plus(y, times(p(x), y)) 819.18/297.03 , shorter(cons(x, l), 0()) -> false() 819.18/297.03 , shorter(cons(x, l), s(y)) -> shorter(l, y) 819.18/297.03 , shorter(nil(), y) -> true() 819.18/297.03 , prod(l) -> if(shorter(l, 0()), shorter(l, s(0())), l) 819.18/297.03 , if(true(), b, l) -> s(0()) 819.18/297.03 , if(false(), b, l) -> if2(b, l) 819.18/297.03 , if2(true(), l) -> car(l) 819.18/297.03 , if2(false(), l) -> prod(cons(times(car(l), cadr(l)), cddr(l))) } 819.18/297.03 Obligation: 819.18/297.03 runtime complexity 819.18/297.03 Answer: 819.18/297.03 MAYBE 819.18/297.03 819.18/297.03 We estimate the number of application of {3,4,6,7,11,14,16,18,20} 819.18/297.03 by applications of Pre({3,4,6,7,11,14,16,18,20}) = 819.18/297.03 {1,2,5,9,12,13,17,19}. Here rules are labeled as follows: 819.18/297.03 819.18/297.03 DPs: 819.18/297.03 { 1: car^#(cons(x, l)) -> c_1(x) 819.18/297.03 , 2: cddr^#(cons(x, cons(y, l))) -> c_2(l) 819.18/297.03 , 3: cddr^#(cons(x, nil())) -> c_3() 819.18/297.03 , 4: cddr^#(nil()) -> c_4() 819.18/297.03 , 5: cadr^#(cons(x, cons(y, l))) -> c_5(y) 819.18/297.03 , 6: isZero^#(0()) -> c_6() 819.18/297.03 , 7: isZero^#(s(x)) -> c_7() 819.18/297.03 , 8: plus^#(x, y) -> c_8(ifplus^#(isZero(x), x, y)) 819.18/297.03 , 9: ifplus^#(true(), x, y) -> c_9(y) 819.18/297.03 , 10: ifplus^#(false(), x, y) -> c_10(plus^#(p(x), y)) 819.18/297.03 , 11: p^#(0()) -> c_11() 819.18/297.03 , 12: p^#(s(x)) -> c_12(x) 819.18/297.03 , 13: times^#(x, y) -> c_13(iftimes^#(isZero(x), x, y)) 819.18/297.03 , 14: iftimes^#(true(), x, y) -> c_14() 819.18/297.03 , 15: iftimes^#(false(), x, y) -> c_15(plus^#(y, times(p(x), y))) 819.18/297.03 , 16: shorter^#(cons(x, l), 0()) -> c_16() 819.18/297.03 , 17: shorter^#(cons(x, l), s(y)) -> c_17(shorter^#(l, y)) 819.18/297.03 , 18: shorter^#(nil(), y) -> c_18() 819.18/297.03 , 19: prod^#(l) -> 819.18/297.03 c_19(if^#(shorter(l, 0()), shorter(l, s(0())), l)) 819.18/297.03 , 20: if^#(true(), b, l) -> c_20() 819.18/297.03 , 21: if^#(false(), b, l) -> c_21(if2^#(b, l)) 819.18/297.03 , 22: if2^#(true(), l) -> c_22(car^#(l)) 819.18/297.03 , 23: if2^#(false(), l) -> 819.18/297.03 c_23(prod^#(cons(times(car(l), cadr(l)), cddr(l)))) } 819.18/297.03 819.18/297.03 We are left with following problem, upon which TcT provides the 819.18/297.03 certificate MAYBE. 819.18/297.03 819.18/297.03 Strict DPs: 819.18/297.03 { car^#(cons(x, l)) -> c_1(x) 819.18/297.03 , cddr^#(cons(x, cons(y, l))) -> c_2(l) 819.18/297.03 , cadr^#(cons(x, cons(y, l))) -> c_5(y) 819.18/297.03 , plus^#(x, y) -> c_8(ifplus^#(isZero(x), x, y)) 819.18/297.03 , ifplus^#(true(), x, y) -> c_9(y) 819.18/297.03 , ifplus^#(false(), x, y) -> c_10(plus^#(p(x), y)) 819.18/297.03 , p^#(s(x)) -> c_12(x) 819.18/297.03 , times^#(x, y) -> c_13(iftimes^#(isZero(x), x, y)) 819.18/297.03 , iftimes^#(false(), x, y) -> c_15(plus^#(y, times(p(x), y))) 819.18/297.03 , shorter^#(cons(x, l), s(y)) -> c_17(shorter^#(l, y)) 819.18/297.03 , prod^#(l) -> c_19(if^#(shorter(l, 0()), shorter(l, s(0())), l)) 819.18/297.03 , if^#(false(), b, l) -> c_21(if2^#(b, l)) 819.18/297.03 , if2^#(true(), l) -> c_22(car^#(l)) 819.18/297.03 , if2^#(false(), l) -> 819.18/297.03 c_23(prod^#(cons(times(car(l), cadr(l)), cddr(l)))) } 819.18/297.03 Strict Trs: 819.18/297.03 { car(cons(x, l)) -> x 819.18/297.03 , cddr(cons(x, cons(y, l))) -> l 819.18/297.03 , cddr(cons(x, nil())) -> nil() 819.18/297.03 , cddr(nil()) -> nil() 819.18/297.03 , cadr(cons(x, cons(y, l))) -> y 819.18/297.03 , isZero(0()) -> true() 819.18/297.03 , isZero(s(x)) -> false() 819.18/297.03 , plus(x, y) -> ifplus(isZero(x), x, y) 819.18/297.03 , ifplus(true(), x, y) -> y 819.18/297.03 , ifplus(false(), x, y) -> s(plus(p(x), y)) 819.18/297.03 , p(0()) -> 0() 819.18/297.03 , p(s(x)) -> x 819.18/297.03 , times(x, y) -> iftimes(isZero(x), x, y) 819.18/297.03 , iftimes(true(), x, y) -> 0() 819.18/297.03 , iftimes(false(), x, y) -> plus(y, times(p(x), y)) 819.18/297.03 , shorter(cons(x, l), 0()) -> false() 819.18/297.03 , shorter(cons(x, l), s(y)) -> shorter(l, y) 819.18/297.03 , shorter(nil(), y) -> true() 819.18/297.03 , prod(l) -> if(shorter(l, 0()), shorter(l, s(0())), l) 819.18/297.03 , if(true(), b, l) -> s(0()) 819.18/297.03 , if(false(), b, l) -> if2(b, l) 819.18/297.03 , if2(true(), l) -> car(l) 819.18/297.03 , if2(false(), l) -> prod(cons(times(car(l), cadr(l)), cddr(l))) } 819.18/297.03 Weak DPs: 819.18/297.03 { cddr^#(cons(x, nil())) -> c_3() 819.18/297.03 , cddr^#(nil()) -> c_4() 819.18/297.03 , isZero^#(0()) -> c_6() 819.18/297.03 , isZero^#(s(x)) -> c_7() 819.18/297.03 , p^#(0()) -> c_11() 819.18/297.03 , iftimes^#(true(), x, y) -> c_14() 819.18/297.03 , shorter^#(cons(x, l), 0()) -> c_16() 819.18/297.03 , shorter^#(nil(), y) -> c_18() 819.18/297.03 , if^#(true(), b, l) -> c_20() } 819.18/297.03 Obligation: 819.18/297.03 runtime complexity 819.18/297.03 Answer: 819.18/297.03 MAYBE 819.18/297.03 819.18/297.03 Empty strict component of the problem is NOT empty. 819.18/297.03 819.18/297.03 819.18/297.03 Arrrr.. 819.39/297.23 EOF