Error in 51.9s

Runtime

Time bar (total: 51.9s)Debug log

start98.0ms

Algorithm
intervals

setup23.0ms

Pruning

1 alts after pruning (1 fresh and 0 done)

Merged error: 29.1b

localize17.0ms

Local error

Found 3 expressions with local error:

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

rewrite8.0ms

Algorithm
rewrite-expression-head
Counts
3 → 66
Calls

3 calls. Slowest were:

6.0ms
(- (cbrt (+ 1 x)) (cbrt x))
1.0ms
(cbrt (+ 1 x))
0.0ms
(cbrt x)

series458.0ms

Counts
3 → 9
Calls

3 calls. Slowest were:

308.0ms
(cbrt x)
118.0ms
(- (cbrt (+ 1 x)) (cbrt x))
31.0ms
(cbrt (+ 1 x))

simplify2.0s

Counts
61 → 75
Calls

61 calls. Slowest were:

371.0ms
(- (+ (* 1/3 x) 1) (+ (* 1/9 (pow x 2)) (pow x 1/3)))
371.0ms
(- (+ (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)))))
270.0ms
(- (+ (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))))

prune755.0ms

Pruning

10 alts after pruning (10 fresh and 0 done)

Merged error: 14.7b

localize55.0ms

Local error

Found 4 expressions with local error:

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

rewrite44.0ms

Algorithm
rewrite-expression-head
Counts
4 → 281
Calls

4 calls. Slowest were:

31.0ms
(- (pow (cbrt (+ 1 x)) 3) (pow (cbrt x) 3))
2.0ms
(pow (cbrt x) 3)
0.0ms
(cbrt x)

series1.1s

Counts
4 → 12
Calls

4 calls. Slowest were:

344.0ms
(cbrt x)
340.0ms
(pow (cbrt x) 3)
328.0ms
(cbrt x)

simplify35.3s

Counts
452 → 293
Calls

452 calls. Slowest were:

510.0ms
(fma (pow (sqrt (cbrt (+ 1 x))) 3) (pow (sqrt (cbrt (+ 1 x))) 3) (- (* (pow (sqrt (cbrt x)) 3) (pow (sqrt (cbrt x)) 3))))
393.0ms
(fma (- (pow (cbrt (cbrt x)) 3)) (pow (* (cbrt (cbrt x)) (cbrt (cbrt x))) 3) (* (pow (cbrt (cbrt x)) 3) (pow (* (cbrt (cbrt x)) (cbrt (cbrt x))) 3)))
385.0ms
(fma (- (pow (cbrt (cbrt x)) 3)) (pow (* (cbrt (cbrt x)) (cbrt (cbrt x))) 3) (* (pow (cbrt (cbrt x)) 3) (pow (* (cbrt (cbrt x)) (cbrt (cbrt x))) 3)))

prune3.7s

Pruning

3 alts after pruning (3 fresh and 0 done)

Merged error: 0.4b

localize9.0ms

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))

rewrite9.0ms

Algorithm
rewrite-expression-head
Counts
4 → 54
Calls

4 calls. Slowest were:

7.0ms
(* (cbrt x) (cbrt x))
0.0ms
(cbrt x)
0.0ms
(cbrt x)

series1.2s

Counts
4 → 12
Calls

4 calls. Slowest were:

332.0ms
(* (cbrt x) (cbrt x))
303.0ms
(cbrt x)
281.0ms
(cbrt x)

simplify46.0ms

Counts
25 → 66
Calls

25 calls. Slowest were:

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

prune734.0ms

Pruning

12 alts after pruning (11 fresh and 1 done)

Merged error: 0.3b

localize19.0ms

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 → 40
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:

288.0ms
(cbrt x)
287.0ms
(cbrt x)
271.0ms
(cbrt x)

simplify63.0ms

Counts
12 → 52
Calls

12 calls. Slowest were:

10.0ms
(* (pow (* x -1) 1/3) (cbrt -1))
10.0ms
(* (pow (* x -1) 1/3) (cbrt -1))
10.0ms
(* (pow (* x -1) 1/3) (cbrt -1))

prune696.0ms

Pruning

13 alts after pruning (12 fresh and 1 done)

Merged error: 0.2b

regimes67.0ms

Please include this information when filing a bug report:

herbie shell --seed 2018359 +o rules:numerics
(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