Error in 12.0s

Runtime

Time bar (total: 12.0s)Debug logProfile

start163.0ms

Algorithm
intervals

setup17.0ms

Pruning

1 alts after pruning (1 fresh and 0 done)

Merged error: 0.3b

localize11.0ms

Local error

Found 2 expressions with local error:

0.2b
(log1p (exp x))
0.0b
(- (log1p (exp x)) (* y x))

rewrite4.0ms

Algorithm
rewrite-expression-head
Counts
2 → 32
Calls

2 calls. Slowest were:

4.0ms
(- (log1p (exp x)) (* y x))
0.0ms
(log1p (exp x))

series117.0ms

Counts
2 → 6
Calls

2 calls. Slowest were:

79.0ms
(log1p (exp x))
38.0ms
(- (log1p (exp x)) (* y x))

simplify196.0ms

Counts
17 → 38
Calls

17 calls. Slowest were:

58.0ms
(+ (log 2) (+ (* 1/2 x) (* 1/8 (pow x 2))))
41.0ms
(+ (log 2) (+ (* 1/2 x) (* 1/8 (pow x 2))))
16.0ms
(/ (exp (log1p (exp x))) (exp (* y x)))

prune335.0ms

Pruning

3 alts after pruning (3 fresh and 0 done)

Merged error: 0b

localize25.0ms

Local error

Found 3 expressions with local error:

48.3b
(fma (- x) y (* x y))
0.2b
(log1p (exp x))
0.0b
(- (log1p (exp x)) (* x y))

rewrite9.0ms

Algorithm
rewrite-expression-head
Counts
3 → 42
Calls

3 calls. Slowest were:

7.0ms
(- (log1p (exp x)) (* x y))
1.0ms
(log1p (exp x))
0.0ms
(fma (- x) y (* x y))

series146.0ms

Counts
3 → 9
Calls

3 calls. Slowest were:

63.0ms
(log1p (exp x))
58.0ms
(- (log1p (exp x)) (* x y))
26.0ms
(fma (- x) y (* x y))

simplify231.0ms

Counts
20 → 51
Calls

20 calls. Slowest were:

41.0ms
(+ (log 2) (+ (* 1/2 x) (* 1/8 (pow x 2))))
34.0ms
(+ (log 2) (+ (* 1/2 x) (* 1/8 (pow x 2))))
21.0ms
(fma (* (cbrt (log1p (exp x))) (cbrt (log1p (exp x)))) (cbrt (log1p (exp x))) (- (* y x)))

prune568.0ms

Pruning

3 alts after pruning (2 fresh and 1 done)

Merged error: 0b

localize15.0ms

Local error

Found 2 expressions with local error:

48.3b
(fma (- x) y (* x y))
0.0b
(- (fma x (fma 1/8 x 1/2) (log 2)) (* x y))

rewrite4.0ms

Algorithm
rewrite-expression-head
Counts
2 → 31
Calls

2 calls. Slowest were:

3.0ms
(- (fma x (fma 1/8 x 1/2) (log 2)) (* x y))
0.0ms
(fma (- x) y (* x y))

series57.0ms

Counts
2 → 6
Calls

2 calls. Slowest were:

38.0ms
(- (fma x (fma 1/8 x 1/2) (log 2)) (* x y))
19.0ms
(fma (- x) y (* x y))

simplify930.0ms

Counts
16 → 37
Calls

16 calls. Slowest were:

204.0ms
(- (+ (* 1/2 x) (* 1/8 (pow x 2))) (* x y))
201.0ms
(- (+ (* 1/2 x) (* 1/8 (pow x 2))) (* x y))
137.0ms
(/ (exp (fma x (fma 1/8 x 1/2) (log 2))) (exp (* x y)))

prune531.0ms

Pruning

3 alts after pruning (1 fresh and 2 done)

Merged error: 0b

localize19.0ms

Local error

Found 3 expressions with local error:

1.0b
(log (/ (+ 1 (exp x)) (exp (* y x))))
0.0b
(exp (* y x))
0.0b
(/ (+ 1 (exp x)) (exp (* y x)))

rewrite19.0ms

Algorithm
rewrite-expression-head
Counts
3 → 68
Calls

3 calls. Slowest were:

12.0ms
(/ (+ 1 (exp x)) (exp (* y x)))
4.0ms
(log (/ (+ 1 (exp x)) (exp (* y x))))
2.0ms
(exp (* y x))

series104.0ms

Counts
3 → 9
Calls

3 calls. Slowest were:

48.0ms
(log (/ (+ 1 (exp x)) (exp (* y x))))
39.0ms
(/ (+ 1 (exp x)) (exp (* y x)))
16.0ms
(exp (* y x))

simplify1.2s

Counts
54 → 77
Calls

54 calls. Slowest were:

362.0ms
(/ (* (* (+ 1 (exp x)) (+ 1 (exp x))) (+ 1 (exp x))) (* (* (exp (* y x)) (exp (* y x))) (exp (* y x))))
175.0ms
(+ (* 1/2 (* (pow x 2) (pow y 2))) (+ 1 (* x y)))
78.0ms
(log (/ (* (cbrt (+ 1 (exp x))) (cbrt (+ 1 (exp x)))) 1))

prune838.0ms

Pruning

3 alts after pruning (0 fresh and 3 done)

Merged error: 0b

regimes69.0ms

Please include this information when filing a bug report:

herbie shell --seed 2018357 +o rules:numerics
(FPCore (x y)
  :name "Logistic regression 2"

  :herbie-target
  (if (<= x 0) (- (log (+ 1 (exp x))) (* x y)) (- (log (+ 1 (exp (- x)))) (* (- x) (- 1 y))))

  (- (log (+ 1 (exp x))) (* x y)))

Backtrace

partition: contract violation expected: list? given: 0.4484231178519161 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