Error in 8.0s

Runtime

Time bar (total: 8.0s)Debug logProfile

start158.0ms

Algorithm
intervals

setup52.0ms

Pruning

1 alts after pruning (1 fresh and 0 done)

Merged error: 29.0b

localize14.0ms

Local error

Found 1 expressions with local error:

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

rewrite4.0ms

Algorithm
rewrite-expression-head
Counts
1 → 12
Calls

1 calls. Slowest were:

4.0ms
(- (/ 2 (+ 1 (exp (* -2 x)))) 1)

series61.0ms

Counts
1 → 3
Calls

1 calls. Slowest were:

61.0ms
(- (/ 2 (+ 1 (exp (* -2 x)))) 1)

simplify151.0ms

Counts
4 → 15
Calls

4 calls. Slowest were:

67.0ms
(- (+ x (* 2/15 (pow x 5))) (* 1/3 (pow x 3)))
43.0ms
(- (* 2 (/ 1 (+ (exp (* -2 x)) 1))) 1)
23.0ms
(- (* 2 (/ 1 (+ (exp (* -2 x)) 1))) 1)

prune223.0ms

Pruning

2 alts after pruning (1 fresh and 1 done)

Merged error: 0b

localize36.0ms

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))

rewrite14.0ms

Algorithm
rewrite-expression-head
Counts
3 → 37
Calls

3 calls. Slowest were:

9.0ms
(- (+ x (* 2/15 (pow x 5))) (* 1/3 (pow x 3)))
2.0ms
(* 1/3 (pow x 3))
2.0ms
(* 2/15 (pow x 5))

series80.0ms

Counts
3 → 9
Calls

3 calls. Slowest were:

44.0ms
(- (+ x (* 2/15 (pow x 5))) (* 1/3 (pow x 3)))
20.0ms
(* 2/15 (pow x 5))
16.0ms
(* 1/3 (pow x 3))

simplify393.0ms

Counts
17 → 46
Calls

17 calls. Slowest were:

149.0ms
(/ (exp (+ x (* 2/15 (pow x 5)))) (exp (* 1/3 (pow x 3))))
72.0ms
(- (+ x (* 2/15 (pow x 5))) (* 1/3 (pow x 3)))
67.0ms
(- (+ x (* 2/15 (pow x 5))) (* 1/3 (pow x 3)))

prune569.0ms

Pruning

2 alts after pruning (0 fresh and 2 done)

Merged error: 0b

regimes314.0ms

Please include this information when filing a bug report:

herbie shell --seed 2018357 
(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