Error in 10.7s

Runtime

Time bar (total: 10.7s)Debug log

start131.0ms

Algorithm
intervals

setup235.0ms

Pruning

1 alts after pruning (1 fresh and 0 done)

Merged error: 17.4b

localize33.0ms

Local error

Found 1 expressions with local error:

17.4b
(/ (* i (/ i 4)) (fma (* i 4) i (- 1.0)))

rewrite8.0ms

Algorithm
rewrite-expression-head
Counts
1 → 22
Calls

1 calls. Slowest were:

8.0ms
(/ (* i (/ i 4)) (fma (* i 4) i (- 1.0)))

series55.0ms

Counts
1 → 3
Calls

1 calls. Slowest were:

55.0ms
(/ (* i (/ i 4)) (fma (* i 4) i (- 1.0)))

simplify693.0ms

Counts
15 → 25
Calls

15 calls. Slowest were:

229.0ms
(- (+ (* 0.25 (pow i 2)) (+ (* 1.0 (pow i 4)) (* 4.0 (pow i 6)))))
116.0ms
(- (log (* i (/ i 4))) (log (fma (* i 4) i (- 1.0))))
95.0ms
(/ (* (* (* 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))))

prune242.0ms

Pruning

3 alts after pruning (2 fresh and 1 done)

Merged error: 0b

localize5.0ms

Local error

Found 2 expressions with local error:

16.8b
(/ (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:

4.0ms
(/ (fma (* i 4) i (- 1.0)) (/ i 4))
1.0ms
(/ i (/ (fma (* i 4) i (- 1.0)) (/ i 4)))

series127.0ms

Counts
2 → 6
Calls

2 calls. Slowest were:

72.0ms
(/ (fma (* i 4) i (- 1.0)) (/ i 4))
55.0ms
(/ i (/ (fma (* i 4) i (- 1.0)) (/ i 4)))

simplify2.1s

Counts
55 → 70
Calls

55 calls. Slowest were:

413.0ms
(/ (* (* (fma (* i 4) i (- 1.0)) (fma (* i 4) i (- 1.0))) (fma (* i 4) i (- 1.0))) (* (* (/ i 4) (/ i 4)) (/ i 4)))
197.0ms
(- (+ (* 0.25 (pow i 2)) (+ (* 1.0 (pow i 4)) (* 4.0 (pow i 6)))))
104.0ms
(/ (fma (* i 4) i (- 1.0)) (/ i 4))

prune718.0ms

Pruning

3 alts after pruning (1 fresh and 2 done)

Merged error: 0b

localize10.0ms

Local error

Found 2 expressions with local error:

0.1b
(/ i (- (* 16 i) (/ 4.0 i)))
0.0b
(- (* 16 i) (/ 4.0 i))

rewrite4.0ms

Algorithm
rewrite-expression-head
Counts
2 → 36
Calls

2 calls. Slowest were:

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

series92.0ms

Counts
2 → 6
Calls

2 calls. Slowest were:

47.0ms
(- (* 16 i) (/ 4.0 i))
45.0ms
(/ i (- (* 16 i) (/ 4.0 i)))

simplify1.0s

Counts
20 → 42
Calls

20 calls. Slowest were:

282.0ms
(+ (* (* 16 i) (* 16 i)) (+ (* (/ 4.0 i) (/ 4.0 i)) (* (* 16 i) (/ 4.0 i))))
150.0ms
(- (+ (* 0.25 (pow i 2)) (+ (* 1.0 (pow i 4)) (* 4.0 (pow i 6)))))
73.0ms
(fma 16 i (- (* (/ 1 i) 4.0)))

prune433.0ms

Pruning

3 alts after pruning (0 fresh and 3 done)

Merged error: 0b

regimes23.0ms

Please include this information when filing a bug report:

herbie shell --seed 2018359 +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: 0.20472335528880334 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