Error in 5.2s

Runtime

Time bar (total: 5.2s)Debug log

start330.0ms

Algorithm
intervals

setup24.0ms

Pruning

1 alts after pruning (1 fresh and 0 done)

Merged error: 0.0b

localize13.0ms

Local error

Found 1 expressions with local error:

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

rewrite8.0ms

Algorithm
rewrite-expression-head
Counts
1 → 28
Calls

1 calls. Slowest were:

6.0ms
(- (pow x 4) (pow y 4))

series47.0ms

Counts
1 → 3
Calls

1 calls. Slowest were:

47.0ms
(- (pow x 4) (pow y 4))

simplify470.0ms

Counts
27 → 31
Calls

27 calls. Slowest were:

63.0ms
(fma (sqrt (pow x 4)) (sqrt (pow x 4)) (- (* (sqrt (pow y 4)) (sqrt (pow y 4)))))
54.0ms
(fma (- (sqrt (pow y 4))) (sqrt (pow y 4)) (* (sqrt (pow y 4)) (sqrt (pow y 4))))
43.0ms
(fma (sqrt (pow x 4)) (sqrt (pow x 4)) (- (* (cbrt (pow y 4)) (* (cbrt (pow y 4)) (cbrt (pow y 4))))))

prune293.0ms

Pruning

2 alts after pruning (1 fresh and 1 done)

Merged error: 0b

localize10.0ms

Local error

Found 3 expressions with local error:

13.0b
(sqrt (pow x 4))
13.0b
(sqrt (pow x 4))
0.2b
(fma (sqrt (pow x 4)) (sqrt (pow x 4)) (- (pow y 4)))

rewrite2.0ms

Algorithm
rewrite-expression-head
Counts
3 → 38
Calls

3 calls. Slowest were:

1.0ms
(sqrt (pow x 4))
1.0ms
(sqrt (pow x 4))
0.0ms
(fma (sqrt (pow x 4)) (sqrt (pow x 4)) (- (pow y 4)))

series60.0ms

Counts
3 → 9
Calls

3 calls. Slowest were:

37.0ms
(fma (sqrt (pow x 4)) (sqrt (pow x 4)) (- (pow y 4)))
13.0ms
(sqrt (pow x 4))
10.0ms
(sqrt (pow x 4))

simplify23.0ms

Counts
17 → 47
Calls

17 calls. Slowest were:

4.0ms
(- (pow x 4) (pow y 4))
4.0ms
(- (pow x 4) (pow y 4))
2.0ms
(sqrt (* (cbrt (pow x 4)) (cbrt (pow x 4))))

prune986.0ms

Pruning

2 alts after pruning (0 fresh and 2 done)

Merged error: 0b

regimes165.0ms

Please include this information when filing a bug report:

herbie shell --seed 2018359 +o rules:numerics
(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