Error in 26.2s

Runtime

Time bar (total: 26.2s)Debug log

start415.0ms

Algorithm
intervals

setup102.0ms

Pruning

1 alts after pruning (1 fresh and 0 done)

Merged error: 42.6b

localize35.0ms

Local error

Found 4 expressions with local error:

37.7b
(- (sqrt (fma (* a -4) c (* b b))) b)
0.2b
(fma (* a -4) c (* b b))
0.1b
(/ (- (sqrt (fma (* a -4) c (* b b))) b) (* 2 a))
0.1b
(sqrt (fma (* a -4) c (* b b)))

rewrite36.0ms

Algorithm
rewrite-expression-head
Counts
4 → 67
Calls

4 calls. Slowest were:

22.0ms
(/ (- (sqrt (fma (* a -4) c (* b b))) b) (* 2 a))
11.0ms
(- (sqrt (fma (* a -4) c (* b b))) b)
2.0ms
(sqrt (fma (* a -4) c (* b b)))

series240.0ms

Counts
4 → 12
Calls

4 calls. Slowest were:

89.0ms
(/ (- (sqrt (fma (* a -4) c (* b b))) b) (* 2 a))
57.0ms
(- (sqrt (fma (* a -4) c (* b b))) b)
48.0ms
(fma (* a -4) c (* b b))

simplify1.5s

Counts
34 → 79
Calls

34 calls. Slowest were:

744.0ms
(- (* (sqrt (fma (* a -4) c (* b b))) (sqrt (fma (* a -4) c (* b b)))) (* b b))
126.0ms
(/ (* (* (- (sqrt (fma (* a -4) c (* b b))) b) (- (sqrt (fma (* a -4) c (* b b))) b)) (- (sqrt (fma (* a -4) c (* b b))) b)) (* (* (* 2 a) (* 2 a)) (* 2 a)))
105.0ms
(- (pow (sqrt (fma (* a -4) c (* b b))) 3) (pow b 3))

prune1.0s

Pruning

3 alts after pruning (3 fresh and 0 done)

Merged error: 0.3b

localize22.0ms

Local error

Found 4 expressions with local error:

0.3b
(/ (* (* a -4) c) (* (* 2 a) (+ (sqrt (fma (* a -4) c (* b b))) b)))
0.2b
(fma (* a -4) c (* b b))
0.1b
(* (* 2 a) (+ (sqrt (fma (* a -4) c (* b b))) b))
0.1b
(+ (sqrt (fma (* a -4) c (* b b))) b)

rewrite35.0ms

Algorithm
rewrite-expression-head
Counts
4 → 70
Calls

4 calls. Slowest were:

21.0ms
(/ (* (* a -4) c) (* (* 2 a) (+ (sqrt (fma (* a -4) c (* b b))) b)))
8.0ms
(* (* 2 a) (+ (sqrt (fma (* a -4) c (* b b))) b))
4.0ms
(+ (sqrt (fma (* a -4) c (* b b))) b)

series337.0ms

Counts
4 → 12
Calls

4 calls. Slowest were:

135.0ms
(/ (* (* a -4) c) (* (* 2 a) (+ (sqrt (fma (* a -4) c (* b b))) b)))
120.0ms
(* (* 2 a) (+ (sqrt (fma (* a -4) c (* b b))) b))
49.0ms
(+ (sqrt (fma (* a -4) c (* b b))) b)

simplify3.9s

Counts
37 → 82
Calls

37 calls. Slowest were:

740.0ms
(/ (* (* (* (* a -4) c) (* (* a -4) c)) (* (* a -4) c)) (* (* (* (* 2 a) (+ (sqrt (fma (* a -4) c (* b b))) b)) (* (* 2 a) (+ (sqrt (fma (* a -4) c (* b b))) b))) (* (* 2 a) (+ (sqrt (fma (* a -4) c (* b b))) b))))
709.0ms
(- (log (* (* a -4) c)) (+ (log (* 2 a)) (log (+ (sqrt (fma (* a -4) c (* b b))) b))))
646.0ms
(/ (* (* (* (* a -4) c) (* (* a -4) c)) (* (* a -4) c)) (* (* (* (* 2 a) (* 2 a)) (* 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))))

prune1.3s

Pruning

7 alts after pruning (7 fresh and 0 done)

Merged error: 0b

localize12.0ms

Local error

Found 4 expressions with local error:

0.2b
(fma (* a -4) c (* b b))
0.1b
(/ c (+ (sqrt (fma (* a -4) c (* b b))) b))
0.1b
(+ (sqrt (fma (* a -4) c (* b b))) b)
0.1b
(sqrt (fma (* a -4) c (* b b)))

rewrite16.0ms

Algorithm
rewrite-expression-head
Counts
4 → 59
Calls

4 calls. Slowest were:

8.0ms
(+ (sqrt (fma (* a -4) c (* b b))) b)
5.0ms
(/ c (+ (sqrt (fma (* a -4) c (* b b))) b))
2.0ms
(sqrt (fma (* a -4) c (* b b)))

series300.0ms

Counts
4 → 12
Calls

4 calls. Slowest were:

143.0ms
(/ c (+ (sqrt (fma (* a -4) c (* b b))) b))
68.0ms
(sqrt (fma (* a -4) c (* b b)))
55.0ms
(+ (sqrt (fma (* a -4) c (* b b))) b)

simplify636.0ms

Counts
26 → 71
Calls

26 calls. Slowest were:

244.0ms
(+ (* (sqrt (fma (* a -4) c (* b b))) (sqrt (fma (* a -4) c (* b b)))) (- (* b b) (* (sqrt (fma (* a -4) c (* b b))) b)))
45.0ms
(- (pow b 2) (* 4 (* a c)))
44.0ms
(- (pow b 2) (* 4 (* a c)))

prune1.0s

Pruning

6 alts after pruning (6 fresh and 0 done)

Merged error: 0b

localize1.0ms

Local error

Found 4 expressions with local error:

0.2b
(fma (* a -4) c (* b b))
0.1b
(/ c (+ (sqrt (fma (* a -4) c (* b b))) b))
0.1b
(+ (sqrt (fma (* a -4) c (* b b))) b)
0.1b
(sqrt (fma (* a -4) c (* b b)))

rewrite8.0ms

Algorithm
rewrite-expression-head
Counts
4 → 59
Calls

4 calls. Slowest were:

4.0ms
(+ (sqrt (fma (* a -4) c (* b b))) b)
2.0ms
(/ c (+ (sqrt (fma (* a -4) c (* b b))) b))
1.0ms
(sqrt (fma (* a -4) c (* b b)))

series271.0ms

Counts
4 → 12
Calls

4 calls. Slowest were:

118.0ms
(/ c (+ (sqrt (fma (* a -4) c (* b b))) b))
62.0ms
(sqrt (fma (* a -4) c (* b b)))
61.0ms
(+ (sqrt (fma (* a -4) c (* b b))) b)

simplify672.0ms

Counts
26 → 71
Calls

26 calls. Slowest were:

315.0ms
(+ (* (sqrt (fma (* a -4) c (* b b))) (sqrt (fma (* a -4) c (* b b)))) (- (* b b) (* (sqrt (fma (* a -4) c (* b b))) b)))
49.0ms
(- (pow b 2) (* 4 (* a c)))
48.0ms
(- (pow b 2) (* 4 (* a c)))

prune962.0ms

Pruning

6 alts after pruning (5 fresh and 1 done)

Merged error: 0b

regimes236.0ms

Please include this information when filing a bug report:

herbie shell --seed 2018359 +o rules:numerics
(FPCore (a b c)
  :name "Quadratic roots, medium range"
  :pre (and (< 1.1102230246251565e-16 a 9007199254740992.0) (< 1.1102230246251565e-16 b 9007199254740992.0) (< 1.1102230246251565e-16 c 9007199254740992.0))
  (/ (+ (- b) (sqrt (- (* b b) (* (* 4 a) c)))) (* 2 a)))

Backtrace

partition: contract violation expected: list? given: 0.15852144413776237 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