Error in 12.1s

Runtime

Time bar (total: 12.1s)Debug log

start135.0ms

Algorithm
intervals

setup18.0ms

Pruning

1 alts after pruning (1 fresh and 0 done)

Merged error: 27.8b

localize18.0ms

Local error

Found 3 expressions with local error:

3.2b
(- (/ 2 (+ 1 (exp (* -2 x)))) 1)
0.0b
(/ 2 (+ 1 (exp (* -2 x))))
0.0b
(+ 1 (exp (* -2 x)))

rewrite36.0ms

Algorithm
rewrite-expression-head
Counts
3 → 50
Calls

3 calls. Slowest were:

26.0ms
(+ 1 (exp (* -2 x)))
9.0ms
(- (/ 2 (+ 1 (exp (* -2 x)))) 1)
1.0ms
(/ 2 (+ 1 (exp (* -2 x))))

series104.0ms

Counts
3 → 9
Calls

3 calls. Slowest were:

66.0ms
(- (/ 2 (+ 1 (exp (* -2 x)))) 1)
27.0ms
(/ 2 (+ 1 (exp (* -2 x))))
11.0ms
(+ 1 (exp (* -2 x)))

simplify679.0ms

Counts
20 → 59
Calls

20 calls. Slowest were:

212.0ms
(- (+ (* 2 (pow x 2)) 2) (* 2 x))
149.0ms
(+ (* 1 1) (- (* (exp (* -2 x)) (exp (* -2 x))) (* 1 (exp (* -2 x)))))
90.0ms
(- (+ x (* 2/15 (pow x 5))) (* 1/3 (pow x 3)))

prune733.0ms

Pruning

2 alts after pruning (2 fresh and 0 done)

Merged error: 0b

localize1.0ms

Local error

Found 3 expressions with local error:

3.2b
(- (/ 2 (+ 1 (exp (* -2 x)))) 1)
0.0b
(/ 2 (+ 1 (exp (* -2 x))))
0.0b
(+ 1 (exp (* -2 x)))

rewrite13.0ms

Algorithm
rewrite-expression-head
Counts
3 → 50
Calls

3 calls. Slowest were:

9.0ms
(- (/ 2 (+ 1 (exp (* -2 x)))) 1)
2.0ms
(+ 1 (exp (* -2 x)))
1.0ms
(/ 2 (+ 1 (exp (* -2 x))))

series96.0ms

Counts
3 → 9
Calls

3 calls. Slowest were:

57.0ms
(- (/ 2 (+ 1 (exp (* -2 x)))) 1)
26.0ms
(/ 2 (+ 1 (exp (* -2 x))))
13.0ms
(+ 1 (exp (* -2 x)))

simplify858.0ms

Counts
20 → 59
Calls

20 calls. Slowest were:

229.0ms
(- (+ (* 2 (pow x 2)) 2) (* 2 x))
164.0ms
(+ (* 1 1) (- (* (exp (* -2 x)) (exp (* -2 x))) (* 1 (exp (* -2 x)))))
160.0ms
(- (+ x (* 2/15 (pow x 5))) (* 1/3 (pow x 3)))

prune607.0ms

Pruning

2 alts after pruning (1 fresh and 1 done)

Merged error: 0b

localize22.0ms

Local error

Found 4 expressions with local error:

18.3b
(- (+ x (* 2/15 (pow x 5))) (* 1/3 (pow x 3)))
0.2b
(* 1/3 (pow x 3))
0.1b
(* 2/15 (pow x 5))
0.0b
(+ x (* 2/15 (pow x 5)))

rewrite9.0ms

Algorithm
rewrite-expression-head
Counts
4 → 61
Calls

4 calls. Slowest were:

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

series145.0ms

Counts
4 → 12
Calls

4 calls. Slowest were:

68.0ms
(+ x (* 2/15 (pow x 5)))
33.0ms
(* 2/15 (pow x 5))
25.0ms
(- (+ x (* 2/15 (pow x 5))) (* 1/3 (pow x 3)))

simplify946.0ms

Counts
28 → 73
Calls

28 calls. Slowest were:

133.0ms
(fma 1 (+ x (* 2/15 (pow x 5))) (- (* (pow x 3) 1/3)))
129.0ms
(fma (sqrt (+ x (* 2/15 (pow x 5)))) (sqrt (+ x (* 2/15 (pow x 5)))) (- (* (pow x 3) 1/3)))
121.0ms
(/ (exp (+ x (* 2/15 (pow x 5)))) (exp (* 1/3 (pow x 3))))

prune996.0ms

Pruning

2 alts after pruning (0 fresh and 2 done)

Merged error: 0b

regimes352.0ms

Please include this information when filing a bug report:

herbie shell --seed 2018359 +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: 0.011905008080251337 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