Error in 16.1s

Runtime

Time bar (total: 16.1s)Debug log

start194.0ms

Algorithm
intervals

setup31.0ms

Pruning

1 alts after pruning (1 fresh and 0 done)

Merged error: 0.2b

localize22.0ms

Local error

Found 2 expressions with local error:

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

rewrite8.0ms

Algorithm
rewrite-expression-head
Counts
2 → 32
Calls

2 calls. Slowest were:

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

series148.0ms

Counts
2 → 6
Calls

2 calls. Slowest were:

102.0ms
(log1p (exp x))
46.0ms
(- (log1p (exp x)) (* y x))

simplify638.0ms

Counts
17 → 38
Calls

17 calls. Slowest were:

402.0ms
(fma (* (cbrt (log1p (exp x))) (cbrt (log1p (exp x)))) (cbrt (log1p (exp x))) (- (* x y)))
68.0ms
(+ (log 2) (+ (* 1/2 x) (* 1/8 (pow x 2))))
43.0ms
(+ (log 2) (+ (* 1/2 x) (* 1/8 (pow x 2))))

prune330.0ms

Pruning

3 alts after pruning (2 fresh and 1 done)

Merged error: 0b

localize28.0ms

Local error

Found 2 expressions with local error:

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

rewrite8.0ms

Algorithm
rewrite-expression-head
Counts
2 → 31
Calls

2 calls. Slowest were:

7.0ms
(- (fma x (fma 1/8 x 1/2) (log 2)) (* y x))
0.0ms
(fma x (fma 1/8 x 1/2) (log 2))

series57.0ms

Counts
2 → 6
Calls

2 calls. Slowest were:

33.0ms
(- (fma x (fma 1/8 x 1/2) (log 2)) (* y x))
23.0ms
(fma x (fma 1/8 x 1/2) (log 2))

simplify1.1s

Counts
16 → 37
Calls

16 calls. Slowest were:

179.0ms
(- (+ (* 1/2 x) (* 1/8 (pow x 2))) (* x y))
163.0ms
(- (+ (* 1/2 x) (* 1/8 (pow x 2))) (* x y))
114.0ms
(fma (* (cbrt (fma x (fma 1/8 x 1/2) (log 2))) (cbrt (fma x (fma 1/8 x 1/2) (log 2)))) (cbrt (fma x (fma 1/8 x 1/2) (log 2))) (- (* x y)))

prune414.0ms

Pruning

3 alts after pruning (1 fresh and 2 done)

Merged error: 0b

localize7.0ms

Local error

Found 4 expressions with local error:

0.6b
(* (sqrt (- (log1p (exp x)) (* y x))) (sqrt (- (log1p (exp x)) (* y x))))
0.5b
(sqrt (- (log1p (exp x)) (* y x)))
0.5b
(sqrt (- (log1p (exp x)) (* y x)))
0.2b
(log1p (exp x))

rewrite20.0ms

Algorithm
rewrite-expression-head
Counts
4 → 83
Calls

4 calls. Slowest were:

12.0ms
(* (sqrt (- (log1p (exp x)) (* y x))) (sqrt (- (log1p (exp x)) (* y x))))
4.0ms
(sqrt (- (log1p (exp x)) (* y x)))
4.0ms
(sqrt (- (log1p (exp x)) (* y x)))

series259.0ms

Counts
4 → 12
Calls

4 calls. Slowest were:

91.0ms
(sqrt (- (log1p (exp x)) (* y x)))
75.0ms
(sqrt (- (log1p (exp x)) (* y x)))
51.0ms
(log1p (exp x))

simplify5.1s

Counts
60 → 95
Calls

60 calls. Slowest were:

400.0ms
(* (sqrt (- (pow (log1p (exp x)) 3) (pow (* y x) 3))) (sqrt (- (* (log1p (exp x)) (log1p (exp x))) (* (* y x) (* y x)))))
375.0ms
(sqrt (- (pow (log1p (exp x)) 3) (pow (* y x) 3)))
363.0ms
(sqrt (- (* (log1p (exp x)) (log1p (exp x))) (* (* y x) (* y x))))

prune1.1s

Pruning

3 alts after pruning (0 fresh and 3 done)

Merged error: 0b

regimes101.0ms

Please include this information when filing a bug report:

herbie shell --seed 2018359 +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: 0.36934103903368637 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