Average Error: 0.0 → 0.0
Time: 35.9s
Precision: 64
Internal Precision: 128
\[a \cdot \left(\left(b + c\right) + d\right)\]
↓
\[\left(d + \left(c + b\right)\right) \cdot a\]

Error

Bits error versus a

Bits error versus b

Bits error versus c

Bits error versus d

Try it out

Your Program's Arguments

Results

Enter valid numbers for all inputs

Target

Original0.0
Target0.0
Herbie0.0
\[a \cdot b + a \cdot \left(c + d\right)\]

Derivation

  1. Initial program 0.0

    \[a \cdot \left(\left(b + c\right) + d\right)\]

  2. Initial simplification0.0

    \[\leadsto \left(\left(b + c\right) + d\right) \cdot a\]

  3. Final simplification0.0

    \[\leadsto \left(d + \left(c + b\right)\right) \cdot a\]

Reproduce

herbie shell --seed 2018365 
(FPCore (a b c d)
  :name "Expression, p14"
  :pre (and (<= 56789 a 98765) (<= 0 b 1) (<= 0 c 0.0016773) (<= 0 d 0.0016773))

  :herbie-target
  (+ (* a b) (* a (+ c d)))

  (* a (+ (+ b c) d)))

Details

Time bar (total: 33.3s)Debug log

start49.0ms

Algorithm
intervals

setup38.0ms

Pruning

1 alts after pruning (1 fresh and 0 done)

Merged error: 0.1b

localize10.0ms

Local error

Found 1 expressions with local error:

0.1b
(* (+ (+ b c) d) a)

rewrite7.0ms

Algorithm
rewrite-expression-head
Counts
1 → 13
Calls

1 calls. Slowest were:

7.0ms
(* (+ (+ b c) d) a)

series30.0ms

Counts
1 → 3
Calls

1 calls. Slowest were:

30.0ms
(* (+ (+ b c) d) a)

simplify396.0ms

Counts
7 → 16
Calls

7 calls. Slowest were:

206.0ms
(* (- (* (+ b c) (+ b c)) (* d d)) a)
99.0ms
(* (+ (pow (+ b c) 3) (pow d 3)) a)
31.0ms
(+ (* a d) (+ (* a b) (* a c)))

prune199.0ms

Pruning

5 alts after pruning (4 fresh and 1 done)

Merged error: 0.0b

localize11.0ms

Local error

Found 4 expressions with local error:

0.5b
(* (sqrt (* (+ (+ b c) d) a)) (sqrt (* (+ (+ b c) d) a)))
0.2b
(sqrt (* (+ (+ b c) d) a))
0.2b
(sqrt (* (+ (+ b c) d) a))
0.1b
(* (+ (+ b c) d) a)

rewrite20.0ms

Algorithm
rewrite-expression-head
Counts
4 → 69
Calls

4 calls. Slowest were:

11.0ms
(* (sqrt (* (+ (+ b c) d) a)) (sqrt (* (+ (+ b c) d) a)))
6.0ms
(* (+ (+ b c) d) a)
1.0ms
(sqrt (* (+ (+ b c) d) a))

series204.0ms

Counts
4 → 12
Calls

4 calls. Slowest were:

76.0ms
(sqrt (* (+ (+ b c) d) a))
73.0ms
(sqrt (* (+ (+ b c) d) a))
31.0ms
(* (+ (+ b c) d) a)
24.0ms
(* (sqrt (* (+ (+ b c) d) a)) (sqrt (* (+ (+ b c) d) a)))

simplify6.0s

Counts
52 → 81
Calls

52 calls. Slowest were:

728.0ms
(* (* (* (sqrt (* (+ (+ b c) d) a)) (sqrt (* (+ (+ b c) d) a))) (sqrt (* (+ (+ b c) d) a))) (* (* (sqrt (* (+ (+ b c) d) a)) (sqrt (* (+ (+ b c) d) a))) (sqrt (* (+ (+ b c) d) a))))
532.0ms
(* (* (+ (+ b c) d) a) (* (+ (+ b c) d) a))
511.0ms
(* (* (+ (+ b c) d) a) (* (+ (+ b c) d) a))

prune966.0ms

Pruning

6 alts after pruning (5 fresh and 1 done)

Merged error: 0.0b

localize15.0ms

Local error

Found 4 expressions with local error:

0.4b
(* (sqrt (+ (+ b c) d)) (* (sqrt (+ (+ b c) d)) a))
0.2b
(* (sqrt (+ (+ b c) d)) a)
0.0b
(sqrt (+ (+ b c) d))
0.0b
(sqrt (+ (+ b c) d))

rewrite43.0ms

Algorithm
rewrite-expression-head
Counts
4 → 70
Calls

4 calls. Slowest were:

31.0ms
(* (sqrt (+ (+ b c) d)) (* (sqrt (+ (+ b c) d)) a))
5.0ms
(* (sqrt (+ (+ b c) d)) a)
3.0ms
(sqrt (+ (+ b c) d))

series174.0ms

Counts
4 → 12
Calls

4 calls. Slowest were:

55.0ms
(* (sqrt (+ (+ b c) d)) a)
46.0ms
(* (sqrt (+ (+ b c) d)) (* (sqrt (+ (+ b c) d)) a))
43.0ms
(sqrt (+ (+ b c) d))
30.0ms
(sqrt (+ (+ b c) d))

simplify4.9s

Counts
51 → 82
Calls

51 calls. Slowest were:

947.0ms
(* (* (* (sqrt (+ (+ b c) d)) (sqrt (+ (+ b c) d))) (sqrt (+ (+ b c) d))) (* (* (* (sqrt (+ (+ b c) d)) a) (* (sqrt (+ (+ b c) d)) a)) (* (sqrt (+ (+ b c) d)) a)))
451.0ms
(* (sqrt (+ (pow (+ b c) 3) (pow d 3))) a)
403.0ms
(* (sqrt (+ (pow (+ b c) 3) (pow d 3))) (* (sqrt (+ (+ b c) d)) a))

prune935.0ms

Pruning

5 alts after pruning (3 fresh and 2 done)

Merged error: 0.0b

localize9.0ms

Local error

Found 4 expressions with local error:

0.5b
(* (sqrt (* (+ (+ b c) d) a)) (* (sqrt (sqrt (* (+ (+ b c) d) a))) (sqrt (sqrt (* (+ (+ b c) d) a)))))
0.5b
(* (sqrt (sqrt (* (+ (+ b c) d) a))) (sqrt (sqrt (* (+ (+ b c) d) a))))
0.2b
(sqrt (* (+ (+ b c) d) a))
0.2b
(sqrt (* (+ (+ b c) d) a))

rewrite94.0ms

Algorithm
rewrite-expression-head
Counts
4 → 110
Calls

4 calls. Slowest were:

64.0ms
(* (sqrt (* (+ (+ b c) d) a)) (* (sqrt (sqrt (* (+ (+ b c) d) a))) (sqrt (sqrt (* (+ (+ b c) d) a)))))
21.0ms
(* (sqrt (sqrt (* (+ (+ b c) d) a))) (sqrt (sqrt (* (+ (+ b c) d) a))))
2.0ms
(sqrt (* (+ (+ b c) d) a))

series232.0ms

Counts
4 → 12
Calls

4 calls. Slowest were:

90.0ms
(* (sqrt (sqrt (* (+ (+ b c) d) a))) (sqrt (sqrt (* (+ (+ b c) d) a))))
60.0ms
(sqrt (* (+ (+ b c) d) a))
50.0ms
(sqrt (* (+ (+ b c) d) a))
32.0ms
(* (sqrt (* (+ (+ b c) d) a)) (* (sqrt (sqrt (* (+ (+ b c) d) a))) (sqrt (sqrt (* (+ (+ b c) d) a)))))

simplify16.8s

Counts
110 → 122
Calls

110 calls. Slowest were:

1.2s
(* (* (* (sqrt (* (+ (+ b c) d) a)) (sqrt (* (+ (+ b c) d) a))) (sqrt (* (+ (+ b c) d) a))) (* (* (* (sqrt (sqrt (* (+ (+ b c) d) a))) (sqrt (sqrt (* (+ (+ b c) d) a)))) (* (sqrt (sqrt (* (+ (+ b c) d) a))) (sqrt (sqrt (* (+ (+ b c) d) a))))) (* (sqrt (sqrt (* (+ (+ b c) d) a))) (sqrt (sqrt (* (+ (+ b c) d) a))))))
946.0ms
(* (* (* (sqrt (* (+ (+ b c) d) a)) (sqrt (* (+ (+ b c) d) a))) (sqrt (* (+ (+ b c) d) a))) (* (* (* (sqrt (sqrt (* (+ (+ b c) d) a))) (sqrt (sqrt (* (+ (+ b c) d) a)))) (sqrt (sqrt (* (+ (+ b c) d) a)))) (* (* (sqrt (sqrt (* (+ (+ b c) d) a))) (sqrt (sqrt (* (+ (+ b c) d) a)))) (sqrt (sqrt (* (+ (+ b c) d) a))))))
522.0ms
(* (sqrt (* (- (* (+ b c) (+ b c)) (* d d)) a)) (* (sqrt (sqrt (* (- (* (+ b c) (+ b c)) (* d d)) a))) (sqrt (sqrt (* (+ (pow (+ b c) 3) (pow d 3)) a)))))

prune1.7s

Pruning

6 alts after pruning (3 fresh and 3 done)

Merged error: 0b

regimes447.0ms

Accuracy

0% (0.0b remaining)

Error of 0.0b against oracle of 0.0b and baseline of 0.0b

bsearch1.0ms