Error in 9.7s

Runtime

Time bar (total: 9.7s)Debug logProfile

start120.0ms

Algorithm
intervals

setup164.0ms

Pruning

1 alts after pruning (1 fresh and 0 done)

Merged error: 12.8b

localize16.0ms

Local error

Found 1 expressions with local error:

12.8b
(/ (* i (/ i 4)) (fma (* i 4) i (- 1.0)))

rewrite6.0ms

Algorithm
rewrite-expression-head
Counts
1 → 22
Calls

1 calls. Slowest were:

6.0ms
(/ (* i (/ i 4)) (fma (* i 4) i (- 1.0)))

series50.0ms

Counts
1 → 3
Calls

1 calls. Slowest were:

50.0ms
(/ (* i (/ i 4)) (fma (* i 4) i (- 1.0)))

simplify695.0ms

Counts
15 → 25
Calls

15 calls. Slowest were:

183.0ms
(- (+ (* 0.25 (pow i 2)) (+ (* 1.0 (pow i 4)) (* 4.0 (pow i 6)))))
134.0ms
(- (log (* i (/ i 4))) (log (fma (* i 4) i (- 1.0))))
101.0ms
(/ (* (* (* i (/ i 4)) (* i (/ i 4))) (* i (/ i 4))) (* (* (fma (* i 4) i (- 1.0)) (fma (* i 4) i (- 1.0))) (fma (* i 4) i (- 1.0))))

prune278.0ms

Pruning

3 alts after pruning (2 fresh and 1 done)

Merged error: 0b

localize5.0ms

Local error

Found 2 expressions with local error:

12.4b
(/ (fma (* i 4) i (- 1.0)) (/ i 4))
0.1b
(/ i (/ (fma (* i 4) i (- 1.0)) (/ i 4)))

rewrite5.0ms

Algorithm
rewrite-expression-head
Counts
2 → 64
Calls

2 calls. Slowest were:

3.0ms
(/ (fma (* i 4) i (- 1.0)) (/ i 4))
1.0ms
(/ i (/ (fma (* i 4) i (- 1.0)) (/ i 4)))

series119.0ms

Counts
2 → 6
Calls

2 calls. Slowest were:

72.0ms
(/ (fma (* i 4) i (- 1.0)) (/ i 4))
47.0ms
(/ i (/ (fma (* i 4) i (- 1.0)) (/ i 4)))

simplify2.1s

Counts
55 → 70
Calls

55 calls. Slowest were:

427.0ms
(/ (* (* (fma (* i 4) i (- 1.0)) (fma (* i 4) i (- 1.0))) (fma (* i 4) i (- 1.0))) (* (* (/ i 4) (/ i 4)) (/ i 4)))
248.0ms
(- (+ (* 0.25 (pow i 2)) (+ (* 1.0 (pow i 4)) (* 4.0 (pow i 6)))))
115.0ms
(sqrt (/ (fma (* i 4) i (- 1.0)) (/ i 4)))

prune699.0ms

Pruning

2 alts after pruning (1 fresh and 1 done)

Merged error: 0b

localize10.0ms

Local error

Found 1 expressions with local error:

0.1b
(/ i (- (* 16 i) (/ 4.0 i)))

rewrite2.0ms

Algorithm
rewrite-expression-head
Counts
1 → 17
Calls

1 calls. Slowest were:

2.0ms
(/ i (- (* 16 i) (/ 4.0 i)))

series40.0ms

Counts
1 → 3
Calls

1 calls. Slowest were:

40.0ms
(/ i (- (* 16 i) (/ 4.0 i)))

simplify611.0ms

Counts
8 → 20
Calls

8 calls. Slowest were:

228.0ms
(+ (* (* 16 i) (* 16 i)) (+ (* (/ 4.0 i) (/ 4.0 i)) (* (* 16 i) (/ 4.0 i))))
182.0ms
(- (+ (* 0.25 (pow i 2)) (+ (* 1.0 (pow i 4)) (* 4.0 (pow i 6)))))
84.0ms
(+ (* 0.015625 (/ 1 (pow i 2))) (+ 1/16 (* 0.00390625 (/ 1 (pow i 4)))))

prune258.0ms

Pruning

2 alts after pruning (0 fresh and 2 done)

Merged error: 0b

regimes34.0ms

Please include this information when filing a bug report:

herbie shell --seed 2018357 +o rules:numerics
(FPCore (i)
  :name "Octave 3.8, jcobi/4, as called"
  :pre (and (> i 0))
  (/ (/ (* (* i i) (* i i)) (* (* 2 i) (* 2 i))) (- (* (* 2 i) (* 2 i)) 1.0)))

Backtrace

partition: contract violation expected: list? given: 0.1771709537485991 argument position: 2nd other arguments...: #<procedure:ordinary-value?>LC
partition/home/p92/racket/collects/racket/list.rkt5550
errors-score/data/pavpan/nightlies/herbie/develop/src/points.rkt3220
for-loop/data/pavpan/nightlies/herbie/develop/src/sandbox.rkt7512
(unnamed)/home/p92/racket/collects/racket/private/more-scheme.rkt26128
run/home/p92/racket/share/pkgs/profile-lib/main.rkt392
profile-thunk16/home/p92/racket/share/pkgs/profile-lib/main.rkt90
(unnamed)/home/p92/racket/collects/racket/private/more-scheme.rkt26128