Error in 6.0s

Runtime

Time bar (total: 6.0s)Debug logProfile

start68.0ms

Algorithm
intervals

setup33.0ms

Pruning

1 alts after pruning (1 fresh and 0 done)

Merged error: 16.5b

localize23.0ms

Local error

Found 2 expressions with local error:

1.2b
(- (atan (+ N 1)) (atan N))
0.0b
(atan (+ N 1))

rewrite7.0ms

Algorithm
rewrite-expression-head
Counts
2 → 22
Calls

2 calls. Slowest were:

6.0ms
(- (atan (+ N 1)) (atan N))
1.0ms
(atan (+ N 1))

series14.0ms

Counts
2 → 6
Calls

2 calls. Slowest were:

11.0ms
(- (atan (+ N 1)) (atan N))
3.0ms
(atan (+ N 1))

simplify104.0ms

Counts
12 → 28
Calls

12 calls. Slowest were:

26.0ms
(+ 1 (* (+ N 1) N))
16.0ms
(- (+ N 1) N)
14.0ms
(/ (exp (atan (+ N 1))) (exp (atan N)))

prune199.0ms

Pruning

2 alts after pruning (2 fresh and 0 done)

Merged error: 0.2b

localize8.0ms

Local error

Found 2 expressions with local error:

0.2b
(atan2 1 (+ 1 (* (+ N 1) N)))
0.0b
(* (+ N 1) N)

rewrite3.0ms

Algorithm
rewrite-expression-head
Counts
2 → 20
Calls

2 calls. Slowest were:

2.0ms
(* (+ N 1) N)
0.0ms
(atan2 1 (+ 1 (* (+ N 1) N)))

series20.0ms

Counts
2 → 6
Calls

2 calls. Slowest were:

18.0ms
(* (+ N 1) N)
3.0ms
(atan2 1 (+ 1 (* (+ N 1) N)))

simplify191.0ms

Counts
10 → 26
Calls

10 calls. Slowest were:

82.0ms
(* (- (* N N) (* 1 1)) N)
29.0ms
(atan2 1 (+ N (+ (pow N 2) 1)))
27.0ms
(atan2 1 (+ N (+ (pow N 2) 1)))

prune256.0ms

Pruning

6 alts after pruning (6 fresh and 0 done)

Merged error: 0.2b

localize24.0ms

Local error

Found 2 expressions with local error:

0.2b
(atan2 1 (+ N (+ (pow N 2) 1)))
0.0b
(+ N (+ (pow N 2) 1))

rewrite6.0ms

Algorithm
rewrite-expression-head
Counts
2 → 18
Calls

2 calls. Slowest were:

5.0ms
(+ N (+ (pow N 2) 1))
0.0ms
(atan2 1 (+ N (+ (pow N 2) 1)))

series17.0ms

Counts
2 → 6
Calls

2 calls. Slowest were:

13.0ms
(+ N (+ (pow N 2) 1))
5.0ms
(atan2 1 (+ N (+ (pow N 2) 1)))

simplify136.0ms

Counts
6 → 24
Calls

6 calls. Slowest were:

27.0ms
(+ N (+ (pow N 2) 1))
25.0ms
(+ N (+ (pow N 2) 1))
25.0ms
(+ N (+ (pow N 2) 1))

prune319.0ms

Pruning

6 alts after pruning (5 fresh and 1 done)

Merged error: 0.2b

localize29.0ms

Local error

Found 4 expressions with local error:

0.3b
(cbrt (+ N 1))
0.3b
(cbrt (+ N 1))
0.3b
(cbrt (+ N 1))
0.2b
(atan2 1 (+ 1 (* (* (cbrt (+ N 1)) (cbrt (+ N 1))) (* (cbrt (+ N 1)) N))))

rewrite4.0ms

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))

series147.0ms

Counts
4 → 12
Calls

4 calls. Slowest were:

55.0ms
(cbrt (+ N 1))
48.0ms
(cbrt (+ N 1))
38.0ms
(cbrt (+ N 1))

simplify1.2s

Counts
27 → 58
Calls

27 calls. Slowest were:

224.0ms
(- (+ (* 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))))
217.0ms
(- (+ (* 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))))
196.0ms
(- (+ (* 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))))

prune653.0ms

Pruning

6 alts after pruning (4 fresh and 2 done)

Merged error: 0.2b

regimes35.0ms

Please include this information when filing a bug report:

herbie shell --seed 2018357 
(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: 0.3515823322804428 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