Error in 1.6m

Runtime

Time bar (total: 1.6m)Debug logProfile

start147.0ms

Algorithm
intervals

setup44.0ms

Pruning

1 alts after pruning (1 fresh and 0 done)

Merged error: 30.4b

localize25.0ms

Local error

Found 3 expressions with local error:

3.2b
(- (/ x (+ x 1)) (/ (+ x 1) (- x 1)))
0.0b
(/ (+ x 1) (- x 1))
0.0b
(/ x (+ x 1))

rewrite372.0ms

Algorithm
rewrite-expression-head
Counts
3 → 164
Calls

3 calls. Slowest were:

354.0ms
(/ (+ x 1) (- x 1))
12.0ms
(- (/ x (+ x 1)) (/ (+ x 1) (- x 1)))
1.0ms
(/ x (+ x 1))

series86.0ms

Counts
3 → 9
Calls

3 calls. Slowest were:

52.0ms
(- (/ x (+ x 1)) (/ (+ x 1) (- x 1)))
17.0ms
(/ (+ x 1) (- x 1))
17.0ms
(/ x (+ x 1))

simplify46.0s

Counts
235 → 173
Calls

235 calls. Slowest were:

1.1s
(fma (/ x (- (* x x) (* 1 1))) (- x 1) (- (* (sqrt (/ (+ x 1) (- x 1))) (sqrt (/ (+ x 1) (- x 1))))))
974.0ms
(fma (sqrt (/ x (+ x 1))) (sqrt (/ x (+ x 1))) (- (* (+ x 1) (/ (+ x 1) (- (* x x) (* 1 1))))))
916.0ms
(fma (/ x (- (* x x) (* 1 1))) (- x 1) (- (* (/ 1 (- x 1)) (+ x 1))))

prune1.6s

Pruning

3 alts after pruning (3 fresh and 0 done)

Merged error: 0.0b

localize15.0ms

Local error

Found 4 expressions with local error:

6.2b
(fma (/ -1 (* x x)) (/ 3 x) (- (/ -1 (* x x)) (/ 3 x)))
0.3b
(/ -1 (* x x))
0.3b
(/ -1 (* x x))
0.0b
(- (/ -1 (* x x)) (/ 3 x))

rewrite13.0ms

Algorithm
rewrite-expression-head
Counts
4 → 73
Calls

4 calls. Slowest were:

10.0ms
(- (/ -1 (* x x)) (/ 3 x))
1.0ms
(/ -1 (* x x))
1.0ms
(/ -1 (* x x))

series82.0ms

Counts
4 → 12
Calls

4 calls. Slowest were:

35.0ms
(- (/ -1 (* x x)) (/ 3 x))
18.0ms
(fma (/ -1 (* x x)) (/ 3 x) (- (/ -1 (* x x)) (/ 3 x)))
15.0ms
(/ -1 (* x x))

simplify3.4s

Counts
52 → 85
Calls

52 calls. Slowest were:

716.0ms
(- (+ (* 3 (/ 1 (pow x 3))) (+ (/ 1 (pow x 2)) (* 3 (/ 1 x)))))
664.0ms
(- (+ (* 3 (/ 1 (pow x 3))) (+ (/ 1 (pow x 2)) (* 3 (/ 1 x)))))
540.0ms
(- (+ (* 3 (/ 1 (pow x 3))) (+ (/ 1 (pow x 2)) (* 3 (/ 1 x)))))

prune984.0ms

Pruning

4 alts after pruning (3 fresh and 1 done)

Merged error: 0.0b

localize17.0ms

Local error

Found 4 expressions with local error:

6.2b
(fma (/ -1 (* x x)) (/ 3 x) (fma 3 (/ -1 x) (/ (/ -1 x) x)))
0.3b
(/ -1 (* x x))
0.2b
(fma 3 (/ -1 x) (/ (/ -1 x) x))
0.1b
(/ (/ -1 x) x)

rewrite6.0ms

Algorithm
rewrite-expression-head
Counts
4 → 50
Calls

4 calls. Slowest were:

2.0ms
(/ (/ -1 x) x)
0.0ms
(/ -1 (* x x))
0.0ms
(fma (/ -1 (* x x)) (/ 3 x) (fma 3 (/ -1 x) (/ (/ -1 x) x)))

series80.0ms

Counts
4 → 12
Calls

4 calls. Slowest were:

38.0ms
(fma 3 (/ -1 x) (/ (/ -1 x) x))
15.0ms
(fma (/ -1 (* x x)) (/ 3 x) (fma 3 (/ -1 x) (/ (/ -1 x) x)))
15.0ms
(/ -1 (* x x))

simplify2.1s

Counts
14 → 62
Calls

14 calls. Slowest were:

660.0ms
(- (+ (* 3 (/ 1 (pow x 3))) (+ (/ 1 (pow x 2)) (* 3 (/ 1 x)))))
648.0ms
(- (+ (* 3 (/ 1 (pow x 3))) (+ (/ 1 (pow x 2)) (* 3 (/ 1 x)))))
632.0ms
(- (+ (* 3 (/ 1 (pow x 3))) (+ (/ 1 (pow x 2)) (* 3 (/ 1 x)))))

prune640.0ms

Pruning

4 alts after pruning (2 fresh and 2 done)

Merged error: 0.0b

localize15.0ms

Local error

Found 4 expressions with local error:

18.2b
(- (* x (- x 1)) (* (+ x 1) (+ x 1)))
0.0b
(/ (- (* x (- x 1)) (* (+ x 1) (+ x 1))) (* (+ x 1) (- x 1)))
0.0b
(* (+ x 1) (+ x 1))
0.0b
(* (+ x 1) (- x 1))

rewrite55.0ms

Algorithm
rewrite-expression-head
Counts
4 → 151
Calls

4 calls. Slowest were:

25.0ms
(/ (- (* x (- x 1)) (* (+ x 1) (+ x 1))) (* (+ x 1) (- x 1)))
10.0ms
(- (* x (- x 1)) (* (+ x 1) (+ x 1)))
8.0ms
(* (+ x 1) (- x 1))

series121.0ms

Counts
4 → 12
Calls

4 calls. Slowest were:

51.0ms
(* (+ x 1) (- x 1))
31.0ms
(/ (- (* x (- x 1)) (* (+ x 1) (+ x 1))) (* (+ x 1) (- x 1)))
28.0ms
(- (* x (- x 1)) (* (+ x 1) (+ x 1)))

simplify33.6s

Counts
142 → 163
Calls

142 calls. Slowest were:

1.4s
(* (* (* (+ x 1) (+ x 1)) (+ x 1)) (* (* (- x 1) (- x 1)) (- x 1)))
1.2s
(* (+ (* x x) (- (* 1 1) (* x 1))) (- x 1))
898.0ms
(* (+ x 1) (* (- x 1) (- x 1)))

prune1.7s

Pruning

3 alts after pruning (1 fresh and 2 done)

Merged error: 0.0b

regimes45.0ms

Please include this information when filing a bug report:

herbie shell --seed 2018357 +o rules:numerics
(FPCore (x)
  :name "Asymptote C"
  (- (/ x (+ x 1)) (/ (+ x 1) (- x 1))))

Backtrace

partition: contract violation expected: list? given: 0.018844360937770435 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