Error in 9.2s

Runtime

Time bar (total: 9.2s)Debug log

start108.0ms

Algorithm
intervals

setup252.0ms

Pruning

1 alts after pruning (1 fresh and 0 done)

Merged error: 6.6b

localize27.0ms

Local error

Found 2 expressions with local error:

6.7b
(sqrt (fabs (- 1 (* (/ b a) (/ b a)))))
0.4b
(* (/ b a) (/ b a))

rewrite8.0ms

Algorithm
rewrite-expression-head
Counts
2 → 37
Calls

2 calls. Slowest were:

6.0ms
(* (/ b a) (/ b a))
1.0ms
(sqrt (fabs (- 1 (* (/ b a) (/ b a)))))

series48.0ms

Counts
2 → 6
Calls

2 calls. Slowest were:

25.0ms
(sqrt (fabs (- 1 (* (/ b a) (/ b a)))))
23.0ms
(* (/ b a) (/ b a))

simplify1.2s

Counts
25 → 43
Calls

25 calls. Slowest were:

893.0ms
(* (* (* (/ b a) (/ b a)) (/ b a)) (* (* (/ b a) (/ b a)) (/ b a)))
54.0ms
(sqrt (fabs (- 1 (/ (pow b 2) (pow a 2)))))
51.0ms
(sqrt (sqrt (fabs (- 1 (* (/ b a) (/ b a))))))

prune457.0ms

Pruning

2 alts after pruning (1 fresh and 1 done)

Merged error: 6.6b

localize10.0ms

Local error

Found 4 expressions with local error:

6.9b
(cbrt (fabs (- 1 (* (/ b a) (/ b a)))))
6.9b
(cbrt (fabs (- 1 (* (/ b a) (/ b a)))))
0.4b
(* (/ b a) (/ b a))
0.4b
(* (/ b a) (/ b a))

rewrite16.0ms

Algorithm
rewrite-expression-head
Counts
4 → 72
Calls

4 calls. Slowest were:

6.0ms
(* (/ b a) (/ b a))
6.0ms
(* (/ b a) (/ b a))
1.0ms
(cbrt (fabs (- 1 (* (/ b a) (/ b a)))))

series157.0ms

Counts
4 → 12
Calls

4 calls. Slowest were:

68.0ms
(cbrt (fabs (- 1 (* (/ b a) (/ b a)))))
54.0ms
(cbrt (fabs (- 1 (* (/ b a) (/ b a)))))
22.0ms
(* (/ b a) (/ b a))

simplify2.6s

Counts
48 → 84
Calls

48 calls. Slowest were:

1.0s
(* (* (* (/ b a) (/ b a)) (/ b a)) (* (* (/ b a) (/ b a)) (/ b a)))
931.0ms
(* (* (* (/ b a) (/ b a)) (/ b a)) (* (* (/ b a) (/ b a)) (/ b a)))
66.0ms
(pow (fabs (- 1 (/ (pow b 2) (pow a 2)))) 1/3)

prune1.2s

Pruning

2 alts after pruning (0 fresh and 2 done)

Merged error: 6.6b

regimes73.0ms

Please include this information when filing a bug report:

herbie shell --seed 2018359 
(FPCore (a b)
  :name "Eccentricity of an ellipse"
  :pre (<= 0 b a 1)
  (sqrt (fabs (/ (- (* a a) (* b b)) (* a a)))))

Backtrace

partition: contract violation expected: list? given: 7.195675444988677 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