Error in 8.0s

Runtime

Time bar (total: 8.0s)Debug log

start37.0ms

Algorithm
intervals

setup11.0ms

Pruning

1 alts after pruning (1 fresh and 0 done)

Merged error: 14.1b

localize10.0ms

Local error

Found 1 expressions with local error:

1.6b
(- (atan (+ N 1)) (atan N))

rewrite3.0ms

Algorithm
rewrite-expression-head
Counts
1 → 15
Calls

1 calls. Slowest were:

3.0ms
(- (atan (+ N 1)) (atan N))

series20.0ms

Counts
1 → 3
Calls

1 calls. Slowest were:

20.0ms
(- (atan (+ N 1)) (atan N))

simplify63.0ms

Counts
9 → 18
Calls

9 calls. Slowest were:

19.0ms
(+ 1 (* (+ N 1) N))
13.0ms
(/ (exp (atan (+ N 1))) (exp (atan N)))
8.0ms
(- (+ N 1) N)

prune125.0ms

Pruning

2 alts after pruning (1 fresh and 1 done)

Merged error: 0.4b

localize18.0ms

Local error

Found 2 expressions with local error:

0.4b
(atan2 1 (+ 1 (* (+ N 1) N)))
0.0b
(* (+ N 1) N)

rewrite6.0ms

Algorithm
rewrite-expression-head
Counts
2 → 20
Calls

2 calls. Slowest were:

5.0ms
(* (+ N 1) N)
0.0ms
(atan2 1 (+ 1 (* (+ N 1) N)))

series39.0ms

Counts
2 → 6
Calls

2 calls. Slowest were:

33.0ms
(* (+ N 1) N)
5.0ms
(atan2 1 (+ 1 (* (+ N 1) N)))

simplify155.0ms

Counts
10 → 26
Calls

10 calls. Slowest were:

73.0ms
(* (- (* N N) (* 1 1)) N)
23.0ms
(* (+ (pow N 3) (pow 1 3)) N)
14.0ms
(atan2 1 (+ N (+ (pow N 2) 1)))

prune311.0ms

Pruning

6 alts after pruning (4 fresh and 2 done)

Merged error: 0.3b

localize33.0ms

Local error

Found 4 expressions with local error:

0.4b
(atan2 1 (+ 1 (* (* (cbrt (+ N 1)) (cbrt (+ N 1))) (* (cbrt (+ N 1)) N))))
0.3b
(cbrt (+ N 1))
0.3b
(cbrt (+ N 1))
0.3b
(cbrt (+ N 1))

rewrite5.0ms

Algorithm
rewrite-expression-head
Counts
4 → 46
Calls

4 calls. Slowest were:

1.0ms
(cbrt (+ N 1))
1.0ms
(cbrt (+ N 1))
1.0ms
(cbrt (+ N 1))

series129.0ms

Counts
4 → 12
Calls

4 calls. Slowest were:

51.0ms
(cbrt (+ N 1))
39.0ms
(cbrt (+ N 1))
33.0ms
(cbrt (+ N 1))

simplify1.5s

Counts
27 → 58
Calls

27 calls. Slowest were:

558.0ms
(- (+ (* 1/3 (/ (exp (* 1/3 (- (log -1) (log (/ -1 N))))) N)) (exp (* 1/3 (- (log -1) (log (/ -1 N)))))) (* 1/9 (/ (exp (* 1/3 (- (log -1) (log (/ -1 N))))) (pow N 2))))
240.0ms
(- (+ (* 1/3 (/ (exp (* 1/3 (- (log -1) (log (/ -1 N))))) N)) (exp (* 1/3 (- (log -1) (log (/ -1 N)))))) (* 1/9 (/ (exp (* 1/3 (- (log -1) (log (/ -1 N))))) (pow N 2))))
240.0ms
(- (+ (* 1/3 (/ (exp (* 1/3 (- (log -1) (log (/ -1 N))))) N)) (exp (* 1/3 (- (log -1) (log (/ -1 N)))))) (* 1/9 (/ (exp (* 1/3 (- (log -1) (log (/ -1 N))))) (pow N 2))))

prune709.0ms

Pruning

7 alts after pruning (4 fresh and 3 done)

Merged error: 0.3b

localize38.0ms

Local error

Found 4 expressions with local error:

0.4b
(atan2 1 (+ 1 (* (* (cbrt (+ N 1)) (cbrt (+ N 1))) (* (* (cbrt (* (cbrt (+ N 1)) (cbrt (+ N 1)))) (cbrt (cbrt (+ N 1)))) N))))
0.3b
(cbrt (+ N 1))
0.3b
(cbrt (+ N 1))
0.3b
(cbrt (+ N 1))

rewrite2.0ms

Algorithm
rewrite-expression-head
Counts
4 → 46
Calls

4 calls. Slowest were:

1.0ms
(cbrt (+ N 1))
1.0ms
(cbrt (+ N 1))
0.0ms
(cbrt (+ N 1))

series125.0ms

Counts
4 → 12
Calls

4 calls. Slowest were:

54.0ms
(cbrt (+ N 1))
35.0ms
(cbrt (+ N 1))
33.0ms
(cbrt (+ N 1))

simplify1.2s

Counts
27 → 58
Calls

27 calls. Slowest were:

218.0ms
(- (+ (* 1/3 (/ (exp (* 1/3 (- (log -1) (log (/ -1 N))))) N)) (exp (* 1/3 (- (log -1) (log (/ -1 N)))))) (* 1/9 (/ (exp (* 1/3 (- (log -1) (log (/ -1 N))))) (pow N 2))))
204.0ms
(- (+ (* 1/3 (/ (exp (* 1/3 (- (log -1) (log (/ -1 N))))) N)) (exp (* 1/3 (- (log -1) (log (/ -1 N)))))) (* 1/9 (/ (exp (* 1/3 (- (log -1) (log (/ -1 N))))) (pow N 2))))
166.0ms
(- (+ (* 1/3 (/ (exp (* 1/3 (- (log -1) (log (/ -1 N))))) N)) (exp (* 1/3 (- (log -1) (log (/ -1 N)))))) (* 1/9 (/ (exp (* 1/3 (- (log -1) (log (/ -1 N))))) (pow N 2))))

prune804.0ms

Pruning

7 alts after pruning (4 fresh and 3 done)

Merged error: 0.3b

regimes97.0ms

Please include this information when filing a bug report:

herbie shell --seed 2018359 
(FPCore (N)
  :name "2atan (example 3.5)"

  :herbie-target
  (atan (/ 1 (+ 1 (* N (+ N 1)))))

  (- (atan (+ N 1)) (atan N)))

Backtrace

partition: contract violation expected: list? given: 0.35174085719840126 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