Error in 12.7s

Runtime

Time bar (total: 12.7s)Debug log

start64.0ms

Algorithm
intervals

setup12.0ms

Pruning

1 alts after pruning (1 fresh and 0 done)

Merged error: 29.1b

localize38.0ms

Local error

Found 3 expressions with local error:

3.3b
(- (cbrt (+ x 1)) (cbrt x))
0.6b
(cbrt x)
0.3b
(cbrt (+ x 1))

rewrite11.0ms

Algorithm
rewrite-expression-head
Counts
3 → 36
Calls

3 calls. Slowest were:

10.0ms
(- (cbrt (+ x 1)) (cbrt x))
1.0ms
(cbrt (+ x 1))
0.0ms
(cbrt x)

series443.0ms

Counts
3 → 9
Calls

3 calls. Slowest were:

298.0ms
(cbrt x)
107.0ms
(- (cbrt (+ x 1)) (cbrt x))
38.0ms
(cbrt (+ x 1))

simplify964.0ms

Counts
20 → 45
Calls

20 calls. Slowest were:

293.0ms
(- (+ (exp (* 1/3 (- (log -1) (log (/ -1 x))))) (* 1/3 (/ (exp (* 1/3 (- (log -1) (log (/ -1 x))))) x))) (+ (* (pow (* x -1) 1/3) (cbrt -1)) (* 1/9 (/ (exp (* 1/3 (- (log -1) (log (/ -1 x))))) (pow x 2)))))
221.0ms
(- (+ (* 1/3 x) 1) (+ (* 1/9 (pow x 2)) (pow x 1/3)))
214.0ms
(- (+ (exp (* 1/3 (- (log -1) (log (/ -1 x))))) (* 1/3 (/ (exp (* 1/3 (- (log -1) (log (/ -1 x))))) x))) (* 1/9 (/ (exp (* 1/3 (- (log -1) (log (/ -1 x))))) (pow x 2))))

prune582.0ms

Pruning

10 alts after pruning (10 fresh and 0 done)

Merged error: 14.7b

localize33.0ms

Local error

Found 4 expressions with local error:

2.7b
(- (pow (cbrt (+ x 1)) 3) (pow (cbrt x) 3))
0.7b
(pow (cbrt x) 3)
0.6b
(cbrt x)
0.6b
(cbrt x)

rewrite13.0ms

Algorithm
rewrite-expression-head
Counts
4 → 69
Calls

4 calls. Slowest were:

11.0ms
(- (pow (cbrt (+ x 1)) 3) (pow (cbrt x) 3))
1.0ms
(pow (cbrt x) 3)
0.0ms
(cbrt x)

series929.0ms

Counts
4 → 12
Calls

4 calls. Slowest were:

299.0ms
(pow (cbrt x) 3)
293.0ms
(cbrt x)
250.0ms
(cbrt x)

simplify588.0ms

Counts
62 → 81
Calls

62 calls. Slowest were:

49.0ms
(/ (exp (pow (cbrt (+ x 1)) 3)) (exp (pow (cbrt x) 3)))
27.0ms
(- (pow (sqrt (cbrt (+ x 1))) 3) (pow (sqrt (cbrt x)) 3))
26.0ms
(- (pow (cbrt (sqrt (+ x 1))) 3) (pow (sqrt (cbrt x)) 3))

prune1.1s

Pruning

4 alts after pruning (4 fresh and 0 done)

Merged error: 0.4b

localize5.0ms

Local error

Found 4 expressions with local error:

0.6b
(cbrt x)
0.6b
(cbrt x)
0.6b
(cbrt x)
0.5b
(* (cbrt x) (cbrt x))

rewrite4.0ms

Algorithm
rewrite-expression-head
Counts
4 → 46
Calls

4 calls. Slowest were:

3.0ms
(* (cbrt x) (cbrt x))
0.0ms
(cbrt x)
0.0ms
(cbrt x)

series1.1s

Counts
4 → 12
Calls

4 calls. Slowest were:

307.0ms
(cbrt x)
265.0ms
(cbrt x)
258.0ms
(* (cbrt x) (cbrt x))

simplify48.0ms

Counts
25 → 58
Calls

25 calls. Slowest were:

9.0ms
(* (pow (pow x 2) 1/3) (pow (cbrt -1) 2))
6.0ms
(* (pow (* x -1) 1/3) (cbrt -1))
5.0ms
(* (pow (* x -1) 1/3) (cbrt -1))

prune762.0ms

Pruning

12 alts after pruning (11 fresh and 1 done)

Merged error: 0.3b

localize21.0ms

Local error

Found 4 expressions with local error:

0.6b
(cbrt x)
0.6b
(cbrt x)
0.6b
(cbrt x)
0.6b
(cbrt x)

rewrite1.0ms

Algorithm
rewrite-expression-head
Counts
4 → 32
Calls

4 calls. Slowest were:

0.0ms
(cbrt x)
0.0ms
(cbrt x)
0.0ms
(cbrt x)

series1.1s

Counts
4 → 12
Calls

4 calls. Slowest were:

309.0ms
(cbrt x)
283.0ms
(cbrt x)
259.0ms
(cbrt x)

simplify40.0ms

Counts
12 → 44
Calls

12 calls. Slowest were:

9.0ms
(* (pow (* x -1) 1/3) (cbrt -1))
5.0ms
(* (pow (* x -1) 1/3) (cbrt -1))
5.0ms
(* (pow (* x -1) 1/3) (cbrt -1))

prune524.0ms

Pruning

13 alts after pruning (12 fresh and 1 done)

Merged error: 0.2b

regimes72.0ms

Please include this information when filing a bug report:

herbie shell --seed 2018359 
(FPCore (x)
  :name "2cbrt (problem 3.3.4)"
  (- (cbrt (+ x 1)) (cbrt x)))

Backtrace

partition: contract violation expected: list? given: 0.5593733225685039 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