Error in 10.3s

Runtime

Time bar (total: 10.3s)Debug logProfile

start122.0ms

Algorithm
intervals

setup82.0ms

Pruning

1 alts after pruning (1 fresh and 0 done)

Merged error: 29.0b

localize26.0ms

Local error

Found 1 expressions with local error:

2.8b
(- (/ 2 (+ 1 (exp (* -2 x)))) 1)

rewrite9.0ms

Algorithm
rewrite-expression-head
Counts
1 → 21
Calls

1 calls. Slowest were:

9.0ms
(- (/ 2 (+ 1 (exp (* -2 x)))) 1)

series62.0ms

Counts
1 → 3
Calls

1 calls. Slowest were:

62.0ms
(- (/ 2 (+ 1 (exp (* -2 x)))) 1)

simplify327.0ms

Counts
9 → 24
Calls

9 calls. Slowest were:

147.0ms
(- (+ x (* 2/15 (pow x 5))) (* 1/3 (pow x 3)))
41.0ms
(/ 2 (+ (pow 1 3) (pow (exp (* -2 x)) 3)))
34.0ms
(- (* 2 (/ 1 (+ (exp (* -2 x)) 1))) 1)

prune280.0ms

Pruning

2 alts after pruning (2 fresh and 0 done)

Merged error: 0b

localize0.0ms

Local error

Found 1 expressions with local error:

2.8b
(- (/ 2 (+ 1 (exp (* -2 x)))) 1)

rewrite5.0ms

Algorithm
rewrite-expression-head
Counts
1 → 21
Calls

1 calls. Slowest were:

5.0ms
(- (/ 2 (+ 1 (exp (* -2 x)))) 1)

series57.0ms

Counts
1 → 3
Calls

1 calls. Slowest were:

57.0ms
(- (/ 2 (+ 1 (exp (* -2 x)))) 1)

simplify322.0ms

Counts
9 → 24
Calls

9 calls. Slowest were:

144.0ms
(- (+ x (* 2/15 (pow x 5))) (* 1/3 (pow x 3)))
51.0ms
(- (* 2 (/ 1 (+ (exp (* -2 x)) 1))) 1)
34.0ms
(/ 2 (+ (pow 1 3) (pow (exp (* -2 x)) 3)))

prune325.0ms

Pruning

2 alts after pruning (1 fresh and 1 done)

Merged error: 0b

localize21.0ms

Local error

Found 3 expressions with local error:

21.9b
(- (+ x (* 2/15 (pow x 5))) (* 1/3 (pow x 3)))
0.1b
(* 1/3 (pow x 3))
0.1b
(* 2/15 (pow x 5))

rewrite8.0ms

Algorithm
rewrite-expression-head
Counts
3 → 49
Calls

3 calls. Slowest were:

5.0ms
(- (+ x (* 2/15 (pow x 5))) (* 1/3 (pow x 3)))
1.0ms
(* 2/15 (pow x 5))
1.0ms
(* 1/3 (pow x 3))

series84.0ms

Counts
3 → 9
Calls

3 calls. Slowest were:

38.0ms
(- (+ x (* 2/15 (pow x 5))) (* 1/3 (pow x 3)))
23.0ms
(* 1/3 (pow x 3))
22.0ms
(* 2/15 (pow x 5))

simplify1.0s

Counts
25 → 58
Calls

25 calls. Slowest were:

178.0ms
(/ (exp (+ x (* 2/15 (pow x 5)))) (exp (* 1/3 (pow x 3))))
145.0ms
(- (+ x (* 2/15 (pow x 5))) (* 1/3 (pow x 3)))
137.0ms
(fma (sqrt (+ x (* 2/15 (pow x 5)))) (sqrt (+ x (* 2/15 (pow x 5)))) (- (* (pow x 3) 1/3)))

prune911.0ms

Pruning

2 alts after pruning (0 fresh and 2 done)

Merged error: 0b

regimes297.0ms

Please include this information when filing a bug report:

herbie shell --seed 2018357 +o rules:numerics
(FPCore (x y)
  :name "Logistic function from Lakshay Garg"
  (- (/ 2 (+ 1 (exp (* -2 x)))) 1))

Backtrace

partition: contract violation expected: list? given: 0.014091973904105288 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