Error in 30.8s

Runtime

Time bar (total: 30.8s)Debug logProfile

start336.0ms

Algorithm
intervals

setup147.0ms

Pruning

1 alts after pruning (1 fresh and 0 done)

Merged error: 33.0b

localize30.0ms

Local error

Found 4 expressions with local error:

23.8b
(sqrt (+ (* b b) (* -4 (* a c))))
0.9b
(- (- b) (sqrt (+ (* b b) (* -4 (* a c)))))
0.6b
(+ (* b b) (* -4 (* a c)))
0.1b
(/ (- (- b) (sqrt (+ (* b b) (* -4 (* a c))))) (* 2 a))

rewrite25.0ms

Algorithm
rewrite-expression-head
Counts
4 → 69
Calls

4 calls. Slowest were:

14.0ms
(/ (- (- b) (sqrt (+ (* b b) (* -4 (* a c))))) (* 2 a))
5.0ms
(- (- b) (sqrt (+ (* b b) (* -4 (* a c)))))
2.0ms
(+ (* b b) (* -4 (* a c)))

series236.0ms

Counts
4 → 12
Calls

4 calls. Slowest were:

71.0ms
(- (- b) (sqrt (+ (* b b) (* -4 (* a c)))))
65.0ms
(/ (- (- b) (sqrt (+ (* b b) (* -4 (* a c))))) (* 2 a))
58.0ms
(sqrt (+ (* b b) (* -4 (* a c))))

simplify2.0s

Counts
46 → 81
Calls

46 calls. Slowest were:

326.0ms
(- (pow (- b) 3) (pow (sqrt (+ (* b b) (* -4 (* a c)))) 3))
244.0ms
(- (* (- b) (- b)) (* (sqrt (+ (* b b) (* -4 (* a c)))) (sqrt (+ (* b b) (* -4 (* a c))))))
173.0ms
(sqrt (+ (pow (* b b) 3) (pow (* -4 (* a c)) 3)))

prune1.1s

Pruning

10 alts after pruning (9 fresh and 1 done)

Merged error: 6.8b

localize13.0ms

Local error

Found 4 expressions with local error:

23.8b
(sqrt (+ (* b b) (* -4 (* a c))))
0.9b
(- (- b) (sqrt (+ (* b b) (* -4 (* a c)))))
0.6b
(+ (* b b) (* -4 (* a c)))
0.3b
(* (- (- b) (sqrt (+ (* b b) (* -4 (* a c))))) (/ 1 (* 2 a)))

rewrite47.0ms

Algorithm
rewrite-expression-head
Counts
4 → 69
Calls

4 calls. Slowest were:

26.0ms
(* (- (- b) (sqrt (+ (* b b) (* -4 (* a c))))) (/ 1 (* 2 a)))
11.0ms
(- (- b) (sqrt (+ (* b b) (* -4 (* a c)))))
5.0ms
(+ (* b b) (* -4 (* a c)))

series259.0ms

Counts
4 → 12
Calls

4 calls. Slowest were:

78.0ms
(- (- b) (sqrt (+ (* b b) (* -4 (* a c)))))
72.0ms
(sqrt (+ (* b b) (* -4 (* a c))))
67.0ms
(* (- (- b) (sqrt (+ (* b b) (* -4 (* a c))))) (/ 1 (* 2 a)))

simplify3.4s

Counts
45 → 81
Calls

45 calls. Slowest were:

438.0ms
(* (- (pow (- b) 3) (pow (sqrt (+ (* b b) (* -4 (* a c)))) 3)) 1)
385.0ms
(* (- (* (- b) (- b)) (* (sqrt (+ (* b b) (* -4 (* a c)))) (sqrt (+ (* b b) (* -4 (* a c)))))) 1)
380.0ms
(* (- (* (- b) (- b)) (* (sqrt (+ (* b b) (* -4 (* a c)))) (sqrt (+ (* b b) (* -4 (* a c)))))) (/ 1 (* 2 a)))

prune1.4s

Pruning

11 alts after pruning (10 fresh and 1 done)

Merged error: 6.8b

localize11.0ms

Local error

Found 4 expressions with local error:

23.8b
(sqrt (+ (* b b) (* -4 (* a c))))
23.8b
(sqrt (+ (* b b) (* -4 (* a c))))
23.8b
(sqrt (+ (* b b) (* -4 (* a c))))
0.9b
(- (- b) (sqrt (+ (* b b) (* -4 (* a c)))))

rewrite19.0ms

Algorithm
rewrite-expression-head
Counts
4 → 58
Calls

4 calls. Slowest were:

8.0ms
(- (- b) (sqrt (+ (* b b) (* -4 (* a c)))))
4.0ms
(sqrt (+ (* b b) (* -4 (* a c))))
3.0ms
(sqrt (+ (* b b) (* -4 (* a c))))

series209.0ms

Counts
4 → 12
Calls

4 calls. Slowest were:

57.0ms
(sqrt (+ (* b b) (* -4 (* a c))))
55.0ms
(sqrt (+ (* b b) (* -4 (* a c))))
52.0ms
(sqrt (+ (* b b) (* -4 (* a c))))

simplify2.2s

Counts
36 → 70
Calls

36 calls. Slowest were:

222.0ms
(sqrt (+ (pow (* b b) 3) (pow (* -4 (* a c)) 3)))
196.0ms
(sqrt (+ (pow (* b b) 3) (pow (* -4 (* a c)) 3)))
185.0ms
(sqrt (- (* (* b b) (* b b)) (* (* -4 (* a c)) (* -4 (* a c)))))

prune1.3s

Pruning

11 alts after pruning (9 fresh and 2 done)

Merged error: 6.8b

localize37.0ms

Local error

Found 4 expressions with local error:

23.8b
(sqrt (+ (* b b) (* -4 (* a c))))
23.8b
(sqrt (+ (* b b) (* -4 (* a c))))
23.8b
(sqrt (+ (* b b) (* -4 (* a c))))
0.9b
(- (- b) (sqrt (+ (* b b) (* -4 (* a c)))))

rewrite23.0ms

Algorithm
rewrite-expression-head
Counts
4 → 58
Calls

4 calls. Slowest were:

11.0ms
(- (- b) (sqrt (+ (* b b) (* -4 (* a c)))))
4.0ms
(sqrt (+ (* b b) (* -4 (* a c))))
4.0ms
(sqrt (+ (* b b) (* -4 (* a c))))

series241.0ms

Counts
4 → 12
Calls

4 calls. Slowest were:

66.0ms
(sqrt (+ (* b b) (* -4 (* a c))))
65.0ms
(sqrt (+ (* b b) (* -4 (* a c))))
55.0ms
(sqrt (+ (* b b) (* -4 (* a c))))

simplify2.1s

Counts
36 → 70
Calls

36 calls. Slowest were:

201.0ms
(sqrt (- (* (* b b) (* b b)) (* (* -4 (* a c)) (* -4 (* a c)))))
192.0ms
(sqrt (- (* (* b b) (* b b)) (* (* -4 (* a c)) (* -4 (* a c)))))
184.0ms
(sqrt (+ (pow (* b b) 3) (pow (* -4 (* a c)) 3)))

prune1.3s

Pruning

11 alts after pruning (8 fresh and 3 done)

Merged error: 6.8b

regimes521.0ms

Please include this information when filing a bug report:

herbie shell --seed 2018357 
(FPCore (a b c)
  :name "quadm (p42, negative)"

  :herbie-target
  (if (< b 0) (/ c (* a (/ (+ (- b) (sqrt (- (* b b) (* 4 (* a c))))) (* 2 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: 10.228861882863265 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