Error in 12.9s

Runtime

Time bar (total: 12.9s)Debug log

start123.0ms

Algorithm
intervals

setup40.0ms

Pruning

1 alts after pruning (1 fresh and 0 done)

Merged error: 28.7b

localize17.0ms

Local error

Found 1 expressions with local error:

3.3b
(- (log1p N) (log N))

rewrite9.0ms

Algorithm
rewrite-expression-head
Counts
1 → 29
Calls

1 calls. Slowest were:

7.0ms
(- (log1p N) (log N))

series105.0ms

Counts
1 → 3
Calls

1 calls. Slowest were:

105.0ms
(- (log1p N) (log N))

simplify885.0ms

Counts
28 → 32
Calls

28 calls. Slowest were:

250.0ms
(- (+ (* 1/3 (/ 1 (pow N 3))) (/ 1 N)) (* 1/2 (/ 1 (pow N 2))))
191.0ms
(- (+ (* 1/3 (/ 1 (pow N 3))) (/ 1 N)) (* 1/2 (/ 1 (pow N 2))))
116.0ms
(- N (+ (log N) (* 1/2 (pow N 2))))

prune303.0ms

Pruning

4 alts after pruning (4 fresh and 0 done)

Merged error: 0.0b

localize9.0ms

Local error

Found 2 expressions with local error:

3.5b
(log (/ (+ 1 N) N))
0.0b
(/ (+ 1 N) N)

rewrite4.0ms

Algorithm
rewrite-expression-head
Counts
2 → 33
Calls

2 calls. Slowest were:

2.0ms
(/ (+ 1 N) N)
1.0ms
(log (/ (+ 1 N) N))

series74.0ms

Counts
2 → 6
Calls

2 calls. Slowest were:

41.0ms
(log (/ (+ 1 N) N))
32.0ms
(/ (+ 1 N) N)

simplify461.0ms

Counts
16 → 39
Calls

16 calls. Slowest were:

188.0ms
(- (+ (* 1/3 (/ 1 (pow N 3))) (/ 1 N)) (* 1/2 (/ 1 (pow N 2))))
159.0ms
(- (+ (* 1/3 (/ 1 (pow N 3))) (/ 1 N)) (* 1/2 (/ 1 (pow N 2))))
60.0ms
(- N (+ (log N) (* 1/2 (pow N 2))))

prune249.0ms

Pruning

4 alts after pruning (4 fresh and 0 done)

Merged error: 0.0b

localize17.0ms

Local error

Found 4 expressions with local error:

3.2b
(log (* (sqrt (/ (+ 1 N) N)) (sqrt (/ (+ 1 N) N))))
0.3b
(* (sqrt (/ (+ 1 N) N)) (sqrt (/ (+ 1 N) N)))
0.1b
(sqrt (/ (+ 1 N) N))
0.1b
(sqrt (/ (+ 1 N) N))

rewrite25.0ms

Algorithm
rewrite-expression-head
Counts
4 → 91
Calls

4 calls. Slowest were:

10.0ms
(log (* (sqrt (/ (+ 1 N) N)) (sqrt (/ (+ 1 N) N))))
10.0ms
(* (sqrt (/ (+ 1 N) N)) (sqrt (/ (+ 1 N) N)))
2.0ms
(sqrt (/ (+ 1 N) N))

series129.0ms

Counts
4 → 12
Calls

4 calls. Slowest were:

48.0ms
(log (* (sqrt (/ (+ 1 N) N)) (sqrt (/ (+ 1 N) N))))
45.0ms
(* (sqrt (/ (+ 1 N) N)) (sqrt (/ (+ 1 N) N)))
21.0ms
(sqrt (/ (+ 1 N) N))

simplify2.1s

Counts
61 → 103
Calls

61 calls. Slowest were:

411.0ms
(* (/ (+ 1 N) N) (/ (+ 1 N) N))
369.0ms
(* (/ (+ 1 N) N) (/ (+ 1 N) N))
214.0ms
(* (* (* (sqrt (/ (+ 1 N) N)) (sqrt (/ (+ 1 N) N))) (sqrt (/ (+ 1 N) N))) (* (* (sqrt (/ (+ 1 N) N)) (sqrt (/ (+ 1 N) N))) (sqrt (/ (+ 1 N) N))))

prune922.0ms

Pruning

4 alts after pruning (3 fresh and 1 done)

Merged error: 0.0b

localize13.0ms

Local error

Found 4 expressions with local error:

3.5b
(log (/ (+ 1 N) N))
3.5b
(log (/ (+ 1 N) N))
3.5b
(log (/ (+ 1 N) N))
0.3b
(cbrt (log (/ (+ 1 N) N)))

rewrite4.0ms

Algorithm
rewrite-expression-head
Counts
4 → 62
Calls

4 calls. Slowest were:

1.0ms
(log (/ (+ 1 N) N))
1.0ms
(log (/ (+ 1 N) N))
1.0ms
(log (/ (+ 1 N) N))

series210.0ms

Counts
4 → 12
Calls

4 calls. Slowest were:

72.0ms
(cbrt (log (/ (+ 1 N) N)))
54.0ms
(log (/ (+ 1 N) N))
51.0ms
(log (/ (+ 1 N) N))

simplify1.8s

Counts
34 → 74
Calls

34 calls. Slowest were:

227.0ms
(- (+ (* 1/3 (/ 1 (pow N 3))) (/ 1 N)) (* 1/2 (/ 1 (pow N 2))))
224.0ms
(- (+ (exp (* 1/3 (+ (log (/ -1 N)) (log -1)))) (* 1/12 (/ (exp (* 1/3 (+ (log (/ -1 N)) (log -1)))) (pow N 2)))) (* 1/6 (/ (exp (* 1/3 (+ (log (/ -1 N)) (log -1)))) N)))
180.0ms
(- (+ (* 1/3 (/ 1 (pow N 3))) (/ 1 N)) (* 1/2 (/ 1 (pow N 2))))

prune1.1s

Pruning

4 alts after pruning (3 fresh and 1 done)

Merged error: 0.0b

regimes35.0ms

Please include this information when filing a bug report:

herbie shell --seed 2018359 +o rules:numerics
(FPCore (N)
  :name "2log (problem 3.3.6)"
  (- (log (+ N 1)) (log N)))

Backtrace

partition: contract violation expected: list? given: 0.0678091680183312 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