Details

Time bar (total: 14.9s)

sample87.0ms

Algorithm
intervals
Results
23.0ms59×body1280valid
14.0ms51×body640valid
13.0ms309×body80nan
9.0ms117×body80valid
9.0ms23×body320valid
1.0ms6×body160valid

simplify7.0ms

Counts
1 → 1
Iterations

Useful iterations: 0 (0.0ms)

IterNodesCost
067
197
2107
done107

prune4.0ms

Pruning

1 alts after pruning (1 fresh and 0 done)

Merged error: 32.8b

localize15.0ms

Local error

Found 2 expressions with local error:

2.0b
(- (log (+ N 1.0)) (log N))
2.9b
(log (+ N 1.0))

rewrite42.0ms

Algorithm
rewrite-expression-head
Rules
22×*-un-lft-identity
16×pow1 add-sqr-sqrt prod-diff
14×add-cube-cbrt log-pow
11×log-prod
4×log-div fma-neg associate--l+ distribute-lft-out--
3×add-exp-log associate--r+
2×associate--l- expm1-log1p-u flip3-+ add-cbrt-cube flip-+ log1p-expm1-u distribute-lft-out add-log-exp
1×sub-neg flip3-- diff-log rem-log-exp flip-- difference-of-squares
Counts
2 → 65
Calls
2 calls:
27.0ms
(- (log (+ N 1.0)) (log N))
9.0ms
(log (+ N 1.0))

series195.0ms

Counts
2 → 6
Calls
2 calls:
121.0ms
(- (log (+ N 1.0)) (log N))
73.0ms
(log (+ N 1.0))

simplify3.7s

Counts
71 → 71
Iterations

Useful iterations: done (3.7s)

IterNodesCost
01271052
1277855
2668705
32055614
done5000592

prune159.0ms

Pruning

3 alts after pruning (3 fresh and 0 done)

Merged error: 0.0b

localize16.0ms

Local error

Found 2 expressions with local error:

0.2b
(fma (/ 1 N) (- 1.0 (/ 0.5 N)) (/ 0.3333333333333333 (pow N 3)))
0.2b
(/ 0.3333333333333333 (pow N 3))

rewrite13.0ms

Algorithm
rewrite-expression-head
Rules
36×times-frac
27×add-sqr-sqrt add-cube-cbrt *-un-lft-identity
12×unpow-prod-down cube-prod associate-/r*
7×add-exp-log
4×cube-mult unpow3 add-cbrt-cube sqr-pow
3×div-exp associate-/l*
2×pow1 expm1-log1p-u log1p-expm1-u add-log-exp
1×cbrt-undiv pow-to-exp frac-2neg pow-exp clear-num fma-udef div-inv
Counts
2 → 77
Calls
2 calls:
0.0ms
(fma (/ 1 N) (- 1.0 (/ 0.5 N)) (/ 0.3333333333333333 (pow N 3)))
9.0ms
(/ 0.3333333333333333 (pow N 3))

series111.0ms

Counts
2 → 6
Calls
2 calls:
56.0ms
(fma (/ 1 N) (- 1.0 (/ 0.5 N)) (/ 0.3333333333333333 (pow N 3)))
54.0ms
(/ 0.3333333333333333 (pow N 3))

simplify2.4s

Counts
83 → 83
Iterations

Useful iterations: 3 (783.0ms)

IterNodesCost
0122992
1221845
2615774
33466768
done5000768

prune192.0ms

Pruning

5 alts after pruning (4 fresh and 1 done)

Merged error: 0.0b

localize11.0ms

Local error

Found 3 expressions with local error:

0.1b
(/ (- 1.0 (/ 0.5 N)) N)
0.2b
(/ 0.3333333333333333 (pow N 3))
10.8b
(+ (/ (- 1.0 (/ 0.5 N)) N) (/ 0.3333333333333333 (pow N 3)))

rewrite260.0ms

Algorithm
rewrite-expression-head
Rules
84×add-sqr-sqrt
83×times-frac
74×*-un-lft-identity
49×add-cube-cbrt
22×fma-def
15×associate-/r*
14×difference-of-squares
12×unpow-prod-down cube-prod
10×add-exp-log
9×associate-/l*
8×distribute-lft-out--
7×add-cbrt-cube
5×add-log-exp
4×cube-mult unpow3 div-exp sqr-pow
3×pow1 expm1-log1p-u log1p-expm1-u div-inv distribute-lft-out
2×cbrt-undiv frac-2neg div-sub clear-num associate-/l/
1×+-commutative pow-to-exp associate-+l- flip3-- flip3-+ frac-add pow-exp sum-log flip-- flip-+
Counts
3 → 151
Calls
3 calls:
50.0ms
(/ (- 1.0 (/ 0.5 N)) N)
18.0ms
(/ 0.3333333333333333 (pow N 3))
181.0ms
(+ (/ (- 1.0 (/ 0.5 N)) N) (/ 0.3333333333333333 (pow N 3)))

series227.0ms

Counts
3 → 9
Calls
3 calls:
104.0ms
(/ (- 1.0 (/ 0.5 N)) N)
64.0ms
(/ 0.3333333333333333 (pow N 3))
59.0ms
(+ (/ (- 1.0 (/ 0.5 N)) N) (/ 0.3333333333333333 (pow N 3)))

simplify1.2s

Counts
160 → 160
Iterations

Useful iterations: done (1.2s)

IterNodesCost
02091779
14511577
212391487
done50001482

prune441.0ms

Pruning

5 alts after pruning (3 fresh and 2 done)

Merged error: 0.0b

localize19.0ms

Local error

Found 4 expressions with local error:

0.2b
(/ 0.3333333333333333 (pow N 3))
4.1b
(exp (log (+ (/ (- 1.0 (/ 0.5 N)) N) (/ 0.3333333333333333 (pow N 3)))))
10.8b
(+ (/ (- 1.0 (/ 0.5 N)) N) (/ 0.3333333333333333 (pow N 3)))
17.5b
(log (+ (/ (- 1.0 (/ 0.5 N)) N) (/ 0.3333333333333333 (pow N 3))))

rewrite541.0ms

Algorithm
rewrite-expression-head
Rules
81×*-un-lft-identity
69×times-frac
57×add-sqr-sqrt
42×add-cube-cbrt
22×fma-def
12×unpow-prod-down log-prod cube-prod associate-/r*
10×add-exp-log
9×distribute-lft-out
6×pow1 log-div exp-sum add-cbrt-cube distribute-lft-out-- add-log-exp difference-of-squares
4×expm1-log1p-u cube-mult exp-prod unpow3 log1p-expm1-u sqr-pow
3×flip3-+ exp-diff div-exp frac-add flip-+ associate-/l*
2×log-pow div-inv
1×cbrt-undiv +-commutative pow-to-exp associate-+l- frac-2neg div-sub rem-log-exp pow-exp clear-num sum-log rem-exp-log
Counts
4 → 150
Calls
4 calls:
12.0ms
(/ 0.3333333333333333 (pow N 3))
147.0ms
(exp (log (+ (/ (- 1.0 (/ 0.5 N)) N) (/ 0.3333333333333333 (pow N 3)))))
207.0ms
(+ (/ (- 1.0 (/ 0.5 N)) N) (/ 0.3333333333333333 (pow N 3)))
169.0ms
(log (+ (/ (- 1.0 (/ 0.5 N)) N) (/ 0.3333333333333333 (pow N 3))))

series299.0ms

Counts
4 → 12
Calls
4 calls:
66.0ms
(/ 0.3333333333333333 (pow N 3))
47.0ms
(exp (log (+ (/ (- 1.0 (/ 0.5 N)) N) (/ 0.3333333333333333 (pow N 3)))))
54.0ms
(+ (/ (- 1.0 (/ 0.5 N)) N) (/ 0.3333333333333333 (pow N 3)))
132.0ms
(log (+ (/ (- 1.0 (/ 0.5 N)) N) (/ 0.3333333333333333 (pow N 3))))

simplify1.3s

Counts
162 → 162
Iterations

Useful iterations: done (1.3s)

IterNodesCost
02212295
14532026
213581829
done50001808

prune571.0ms

Pruning

5 alts after pruning (3 fresh and 2 done)

Merged error: 0.0b

regimes58.0ms

Accuracy

99.9% (0.0b remaining)

Error of 0.1b against oracle of 0.0b and baseline of 32.0b

bsearch61.0ms

Steps
ItersRangePoint
9
0.00565890190154967
18133.886566758163
4148.853859252382

simplify5.0ms

Iterations

Useful iterations: 0 (1.0ms)

IterNodesCost
02128
12428
done2428

end0.0ms

sample2.9s

Algorithm
intervals
Results
807.0ms1746×body1280valid
741.0ms1216×body640valid
421.0ms8101×body80nan
302.0ms4125×body80valid
177.0ms614×body320valid
31.0ms299×body160valid