Error in 4.8s

Runtime

Time bar (total: 4.8s)Debug log

start128.0ms

Algorithm
intervals

setup21.0ms

Pruning

1 alts after pruning (1 fresh and 0 done)

Merged error: 0.0b

localize38.0ms

Local error

Found 1 expressions with local error:

0.0b
(- (pow x 4) (pow y 4))

rewrite7.0ms

Algorithm
rewrite-expression-head
Counts
1 → 14
Calls

1 calls. Slowest were:

5.0ms
(- (pow x 4) (pow y 4))

series34.0ms

Counts
1 → 3
Calls

1 calls. Slowest were:

34.0ms
(- (pow x 4) (pow y 4))

simplify25.0ms

Counts
7 → 17
Calls

7 calls. Slowest were:

7.0ms
(/ (exp (pow x 4)) (exp (pow y 4)))
4.0ms
(- (sqrt (pow x 4)) (sqrt (pow y 4)))
3.0ms
(- (pow x 4) (pow y 4))

prune584.0ms

Pruning

2 alts after pruning (1 fresh and 1 done)

Merged error: 0b

localize30.0ms

Local error

Found 4 expressions with local error:

13.1b
(sqrt (pow y 4))
13.1b
(sqrt (pow y 4))
13.0b
(sqrt (pow x 4))
13.0b
(sqrt (pow x 4))

rewrite5.0ms

Algorithm
rewrite-expression-head
Counts
4 → 48
Calls

4 calls. Slowest were:

1.0ms
(sqrt (pow y 4))
1.0ms
(sqrt (pow x 4))
1.0ms
(sqrt (pow y 4))

series65.0ms

Counts
4 → 12
Calls

4 calls. Slowest were:

17.0ms
(sqrt (pow y 4))
16.0ms
(sqrt (pow x 4))
16.0ms
(sqrt (pow y 4))

simplify56.0ms

Counts
28 → 60
Calls

28 calls. Slowest were:

4.0ms
(sqrt (* (cbrt (pow y 4)) (cbrt (pow y 4))))
4.0ms
(sqrt (* (cbrt (pow y 4)) (cbrt (pow y 4))))
4.0ms
(sqrt (* (cbrt (pow x 4)) (cbrt (pow x 4))))

prune751.0ms

Pruning

2 alts after pruning (0 fresh and 2 done)

Merged error: 0b

regimes246.0ms

Please include this information when filing a bug report:

herbie shell --seed 2018359 
(FPCore (x y)
  :name "Radioactive exchange between two surfaces"
  (- (pow x 4) (pow y 4)))

Backtrace

partition: contract violation expected: list? given: 0.00175 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