Error in 10.3s

Runtime

Time bar (total: 10.3s)Debug log

start117.0ms

Algorithm
intervals

setup21.0ms

Pruning

1 alts after pruning (1 fresh and 0 done)

Merged error: 39.9b

localize14.0ms

Local error

Found 2 expressions with local error:

4.5b
(- (exp x) 1)
0.0b
(/ (- (exp x) 1) x)

rewrite10.0ms

Algorithm
rewrite-expression-head
Counts
2 → 29
Calls

2 calls. Slowest were:

7.0ms
(/ (- (exp x) 1) x)
3.0ms
(- (exp x) 1)

series45.0ms

Counts
2 → 6
Calls

2 calls. Slowest were:

33.0ms
(/ (- (exp x) 1) x)
12.0ms
(- (exp x) 1)

simplify277.0ms

Counts
13 → 35
Calls

13 calls. Slowest were:

84.0ms
(* -1 (/ (- 1 (exp x)) x))
82.0ms
(+ x (+ (* 1/6 (pow x 3)) (* 1/2 (pow x 2))))
36.0ms
(+ (* 1/2 x) (+ (* 1/6 (pow x 2)) 1))

prune302.0ms

Pruning

4 alts after pruning (4 fresh and 0 done)

Merged error: 0.0b

localize28.0ms

Local error

Found 2 expressions with local error:

0.2b
(* 1/6 (pow x 2))
0.0b
(+ (* 1/2 x) (+ (* 1/6 (pow x 2)) 1))

rewrite17.0ms

Algorithm
rewrite-expression-head
Counts
2 → 24
Calls

2 calls. Slowest were:

14.0ms
(+ (* 1/2 x) (+ (* 1/6 (pow x 2)) 1))
2.0ms
(* 1/6 (pow x 2))

series30.0ms

Counts
2 → 6
Calls

2 calls. Slowest were:

19.0ms
(* 1/6 (pow x 2))
10.0ms
(+ (* 1/2 x) (+ (* 1/6 (pow x 2)) 1))

simplify216.0ms

Counts
10 → 30
Calls

10 calls. Slowest were:

65.0ms
(* (exp (* 1/2 x)) (exp (+ (* 1/6 (pow x 2)) 1)))
41.0ms
(+ (* 1/2 x) (+ (* 1/6 (pow x 2)) 1))
41.0ms
(+ (* 1/2 x) (+ (* 1/6 (pow x 2)) 1))

prune426.0ms

Pruning

4 alts after pruning (3 fresh and 1 done)

Merged error: 0.0b

localize28.0ms

Local error

Found 4 expressions with local error:

4.4b
(+ -1 (* (exp x) (exp x)))
0.0b
(* (exp x) (exp x))
0.0b
(* x (+ (exp x) 1))
0.0b
(+ (exp x) 1)

rewrite24.0ms

Algorithm
rewrite-expression-head
Counts
4 → 55
Calls

4 calls. Slowest were:

8.0ms
(* x (+ (exp x) 1))
8.0ms
(* (exp x) (exp x))
5.0ms
(+ (exp x) 1)

series78.0ms

Counts
4 → 12
Calls

4 calls. Slowest were:

28.0ms
(+ -1 (* (exp x) (exp x)))
26.0ms
(* x (+ (exp x) 1))
16.0ms
(* (exp x) (exp x))

simplify613.0ms

Counts
30 → 67
Calls

30 calls. Slowest were:

142.0ms
(+ (* 2 x) (+ (* 4/3 (pow x 3)) (* 2 (pow x 2))))
132.0ms
(+ (* 2 x) (+ (* 1/2 (pow x 3)) (pow x 2)))
106.0ms
(+ (* (exp x) (exp x)) (- (* 1 1) (* (exp x) 1)))

prune767.0ms

Pruning

3 alts after pruning (2 fresh and 1 done)

Merged error: 0.0b

localize40.0ms

Local error

Found 4 expressions with local error:

4.5b
(- 1 (exp x))
4.4b
(+ -1 (* (exp x) (exp x)))
0.0b
(pow (exp x) 3)
0.0b
(* (exp x) (exp x))

rewrite8.0ms

Algorithm
rewrite-expression-head
Counts
4 → 60
Calls

4 calls. Slowest were:

4.0ms
(* (exp x) (exp x))
2.0ms
(+ -1 (* (exp x) (exp x)))
1.0ms
(pow (exp x) 3)

series75.0ms

Counts
4 → 12
Calls

4 calls. Slowest were:

27.0ms
(+ -1 (* (exp x) (exp x)))
22.0ms
(pow (exp x) 3)
15.0ms
(- 1 (exp x))

simplify610.0ms

Counts
32 → 72
Calls

32 calls. Slowest were:

206.0ms
(- (+ x (+ (* 1/6 (pow x 3)) (* 1/2 (pow x 2)))))
164.0ms
(+ (* 2 x) (+ (* 4/3 (pow x 3)) (* 2 (pow x 2))))
71.0ms
(+ (* 2 x) (+ (* 2 (pow x 2)) 1))

prune1.1s

Pruning

2 alts after pruning (1 fresh and 1 done)

Merged error: 0.0b

regimes41.0ms

Please include this information when filing a bug report:

herbie shell --seed 2018359 
(FPCore (x)
  :name "Kahan's exp quotient"

  :herbie-target
  (if (and (< x 1) (> x -1)) (/ (- (exp x) 1) (log (exp x))) (/ (- (exp x) 1) x))

  (/ (- (exp x) 1) x))

Backtrace

partition: contract violation expected: list? given: 0.3593859516070203 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