Error in 27.9s

Runtime

Time bar (total: 27.9s)Debug log

start260.0ms

Algorithm
intervals

setup570.0ms

Pruning

1 alts after pruning (1 fresh and 0 done)

Merged error: 30.2b

localize36.0ms

Local error

Found 4 expressions with local error:

19.0b
(sqrt (fma (* a -4) c (* b b)))
1.3b
(- (sqrt (fma (* a -4) c (* b b))) b)
0.1b
(/ (- (sqrt (fma (* a -4) c (* b b))) b) (* 2 a))
0.0b
(fma (* a -4) c (* b b))

rewrite35.0ms

Algorithm
rewrite-expression-head
Counts
4 → 67
Calls

4 calls. Slowest were:

22.0ms
(/ (- (sqrt (fma (* a -4) c (* b b))) b) (* 2 a))
10.0ms
(- (sqrt (fma (* a -4) c (* b b))) b)
2.0ms
(sqrt (fma (* a -4) c (* b b)))

series257.0ms

Counts
4 → 12
Calls

4 calls. Slowest were:

87.0ms
(/ (- (sqrt (fma (* a -4) c (* b b))) b) (* 2 a))
69.0ms
(sqrt (fma (* a -4) c (* b b)))
69.0ms
(- (sqrt (fma (* a -4) c (* b b))) b)

simplify1.4s

Counts
34 → 79
Calls

34 calls. Slowest were:

788.0ms
(- (* (sqrt (fma (* a -4) c (* b b))) (sqrt (fma (* a -4) c (* b b)))) (* b b))
101.0ms
(- (pow (sqrt (fma (* a -4) c (* b b))) 3) (pow b 3))
85.0ms
(- (log (- (sqrt (fma (* a -4) c (* b b))) b)) (log (* 2 a)))

prune1.2s

Pruning

10 alts after pruning (10 fresh and 0 done)

Merged error: 19.3b

localize12.0ms

Local error

Found 4 expressions with local error:

19.0b
(sqrt (fma (* a -4) c (* b b)))
1.3b
(- (sqrt (fma (* a -4) c (* b b))) b)
0.2b
(* (- (sqrt (fma (* a -4) c (* b b))) b) (/ 1 (* 2 a)))
0.0b
(fma (* a -4) c (* b b))

rewrite26.0ms

Algorithm
rewrite-expression-head
Counts
4 → 70
Calls

4 calls. Slowest were:

15.0ms
(* (- (sqrt (fma (* a -4) c (* b b))) b) (/ 1 (* 2 a)))
9.0ms
(- (sqrt (fma (* a -4) c (* b b))) b)
2.0ms
(sqrt (fma (* a -4) c (* b b)))

series252.0ms

Counts
4 → 12
Calls

4 calls. Slowest were:

94.0ms
(* (- (sqrt (fma (* a -4) c (* b b))) b) (/ 1 (* 2 a)))
58.0ms
(sqrt (fma (* a -4) c (* b b)))
51.0ms
(fma (* a -4) c (* b b))

simplify2.2s

Counts
39 → 82
Calls

39 calls. Slowest were:

329.0ms
(* (- (sqrt (fma (* a -4) c (* b b))) b) (/ 1 (* 2 a)))
328.0ms
(* (- (* (sqrt (fma (* a -4) c (* b b))) (sqrt (fma (* a -4) c (* b b)))) (* b b)) 1)
288.0ms
(* (- (* (sqrt (fma (* a -4) c (* b b))) (sqrt (fma (* a -4) c (* b b)))) (* b b)) (/ 1 (* 2 a)))

prune1.3s

Pruning

10 alts after pruning (9 fresh and 1 done)

Merged error: 18.6b

localize18.0ms

Local error

Found 4 expressions with local error:

19.0b
(sqrt (fma (* a -4) c (* b b)))
12.3b
(* (* a (* c -4)) (/ 1/2 a))
1.0b
(+ (sqrt (fma (* a -4) c (* b b))) b)
0.1b
(/ (* (* a (* c -4)) (/ 1/2 a)) (+ (sqrt (fma (* a -4) c (* b b))) b))

rewrite25.0ms

Algorithm
rewrite-expression-head
Counts
4 → 77
Calls

4 calls. Slowest were:

15.0ms
(/ (* (* a (* c -4)) (/ 1/2 a)) (+ (sqrt (fma (* a -4) c (* b b))) b))
4.0ms
(* (* a (* c -4)) (/ 1/2 a))
4.0ms
(+ (sqrt (fma (* a -4) c (* b b))) b)

series291.0ms

Counts
4 → 12
Calls

4 calls. Slowest were:

152.0ms
(/ (* (* a (* c -4)) (/ 1/2 a)) (+ (sqrt (fma (* a -4) c (* b b))) b))
82.0ms
(+ (sqrt (fma (* a -4) c (* b b))) b)
46.0ms
(sqrt (fma (* a -4) c (* b b)))

simplify2.2s

Counts
45 → 89
Calls

45 calls. Slowest were:

260.0ms
(/ (* (* (* (* a (* c -4)) (/ 1/2 a)) (* (* a (* c -4)) (/ 1/2 a))) (* (* a (* c -4)) (/ 1/2 a))) (* (* (+ (sqrt (fma (* a -4) c (* b b))) b) (+ (sqrt (fma (* a -4) c (* b b))) b)) (+ (sqrt (fma (* a -4) c (* b b))) b)))
258.0ms
(/ (* (* (* (* a (* c -4)) (* a (* c -4))) (* a (* c -4))) (* (* (/ 1/2 a) (/ 1/2 a)) (/ 1/2 a))) (* (* (+ (sqrt (fma (* a -4) c (* b b))) b) (+ (sqrt (fma (* a -4) c (* b b))) b)) (+ (sqrt (fma (* a -4) c (* b b))) b)))
241.0ms
(* (* a (* c -4)) (/ 1/2 a))

prune1.2s

Pruning

10 alts after pruning (9 fresh and 1 done)

Merged error: 11.4b

localize9.0ms

Local error

Found 4 expressions with local error:

19.0b
(sqrt (fma (* a -4) c (* b b)))
1.0b
(+ (sqrt (fma (* a -4) c (* b b))) b)
0.1b
(/ (* -2 c) (+ (sqrt (fma (* a -4) c (* b b))) b))
0.0b
(fma (* a -4) c (* b b))

rewrite12.0ms

Algorithm
rewrite-expression-head
Counts
4 → 65
Calls

4 calls. Slowest were:

7.0ms
(/ (* -2 c) (+ (sqrt (fma (* a -4) c (* b b))) b))
4.0ms
(+ (sqrt (fma (* a -4) c (* b b))) b)
1.0ms
(sqrt (fma (* a -4) c (* b b)))

series257.0ms

Counts
4 → 12
Calls

4 calls. Slowest were:

123.0ms
(/ (* -2 c) (+ (sqrt (fma (* a -4) c (* b b))) b))
54.0ms
(+ (sqrt (fma (* a -4) c (* b b))) b)
46.0ms
(sqrt (fma (* a -4) c (* b b)))

simplify907.0ms

Counts
34 → 77
Calls

34 calls. Slowest were:

279.0ms
(+ (* (sqrt (fma (* a -4) c (* b b))) (sqrt (fma (* a -4) c (* b b)))) (- (* b b) (* (sqrt (fma (* a -4) c (* b b))) b)))
73.0ms
(/ (* (* (* -2 c) (* -2 c)) (* -2 c)) (* (* (+ (sqrt (fma (* a -4) c (* b b))) b) (+ (sqrt (fma (* a -4) c (* b b))) b)) (+ (sqrt (fma (* a -4) c (* b b))) b)))
42.0ms
(- (pow b 2) (* 4 (* a c)))

prune1.0s

Pruning

9 alts after pruning (7 fresh and 2 done)

Merged error: 10.7b

regimes316.0ms

Please include this information when filing a bug report:

herbie shell --seed 2018359 +o rules:numerics
(FPCore (a b c)
  :name "The quadratic formula (r1)"

  :herbie-target
  (if (< b 0) (/ (+ (- b) (sqrt (- (* b b) (* (* 4 a) c)))) (* 2 a)) (/ c (* a (/ (- (- b) (sqrt (- (* b b) (* (* 4 a) c)))) (* 2 a)))))

  (/ (+ (- b) (sqrt (- (* b b) (* (* 4 a) c)))) (* 2 a)))

Backtrace

partition: contract violation expected: list? given: 12.493029946439066 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