Details

sample122.0ms

Algorithm

intervals

sampling

Space saved by range analysis: 76.270393%

Space saved by search: 76.270393%

Guaranteed chance to sample good point: 99.588013%

Results

48.0ms	123×	body	1280	valid
20.0ms	82×	body	640	valid
6.0ms	36×	body	320	valid
3.0ms	256×	pre	80	true
2.0ms	15×	body	160	valid

simplify154.0ms

Algorithm

egg-herbie

Counts

1 → 1

Iterations

Useful iterations: 0 (1.0ms)

Iter	Nodes	Cost
0	18	8
1	43	8
2	123	8
3	212	8
4	374	8
5	496	8
6	715	8
7	967	8
8	1121	8
9	1221	8
10	1481	8
11	1659	8
12	2039	8
13	2376	8
14	3209	8
15	5001	8

prune3.0ms

Pruning

2 alts after pruning (2 fresh and 0 done)

	Kept	Total
New	1	1
Fresh	1	1
Picked	0	0
Done	0	0
Total	2	2

Merged error: 63.0b

Counts

2 → 1

localize10.0ms

Local error

Found 3 expressions with local error:

0.2b	(* (+ n 1.0) (log (+ n 1.0)))
0.2b	(* n (log n))
5.8b	(- (* (+ n 1.0) (log (+ n 1.0))) (* n (log n)))

rewrite22.0ms

Algorithm

rewrite-expression-head

Rules

28×	`log-prod`
25×	`*-un-lft-identity`
19×	`add-sqr-sqrt`
15×	`add-cube-cbrt`
14×	`distribute-rgt-in` `distribute-lft-in`
9×	`pow1`
8×	`associate-r` `associate--l+`
7×	`add-exp-log` `associate-l` `add-cbrt-cube`
6×	`associate--r+`
5×	`distribute-lft-out` `add-log-exp`
2×	`pow-prod-down` `associate-l/` `prod-exp` `log-pow` `-commutative` `cbrt-unprod` `unswap-sqr`
1×	`sub-neg` `flip3--` `flip3-+` `diff-log` `flip--` `flip-+`

Counts

3 → 81

Calls

3 calls:

7.0ms	(* (+ n 1.0) (log (+ n 1.0)))
4.0ms	(* n (log n))
8.0ms	(- (* (+ n 1.0) (log (+ n 1.0))) (* n (log n)))

series30.0ms

Counts

3 → 9

Calls

3 calls:

5.0ms	(* (+ n 1.0) (log (+ n 1.0)))
15.0ms	(* n (log n))
11.0ms	(- (* (+ n 1.0) (log (+ n 1.0))) (* n (log n)))

simplify55.0ms

Algorithm

egg-herbie

Counts

90 → 90

Iterations

Useful iterations: 2 (44.0ms)

Iter	Nodes	Cost
0	439	660
1	1891	592
2	5001	573

prune135.0ms

Filtered

63 candidates to 90 candidates (-42.9%)

Pruning

1 alts after pruning (1 fresh and 0 done)

	Pruned	Kept	Total
New	89	1	90
Fresh	0	0	0
Picked	1	0	1
Done	0	0	0
Total	90	1	91

Merged error: 0.0b

Counts

91 → 1

localize18.0ms

Local error

Found 4 expressions with local error:

0.0b	(log (/ 1 n))
0.0b	(- (- (+ (* 1.0 (log 1)) (+ (* 0.5 (/ 1 n)) 1.0)) (+ (* 1.0 (log (/ 1 n))) (* 0.16666666666666669 (/ 1 (pow n 2))))) 1.0)
0.1b	(* 0.16666666666666669 (/ 1 (pow n 2)))
0.8b	(/ 1 (pow n 2))

rewrite43.0ms

Algorithm

rewrite-expression-head

Rules

65×	`times-frac`
64×	`add-sqr-sqrt`
53×	`*-un-lft-identity`
44×	`add-cube-cbrt`
38×	`add-exp-log`
33×	`add-log-exp`
28×	`associate-r`
23×	`unpow-prod-down`
14×	`div-exp`
13×	`log-prod` `diff-log`
11×	`add-cbrt-cube`
10×	`prod-exp`
9×	`sum-log` `unpow2` `unswap-sqr` `sqr-pow`
8×	`pow1` `associate-/r*`
7×	`rec-exp` `1-exp`
6×	`pow-to-exp` `pow-exp`
4×	`rem-log-exp` `associate--l+`
3×	`associate-l` `log-pow` `div-inv` `associate-/l*` `distribute-lft-out--`
2×	`cbrt-undiv` `sub-neg` `pow-flip` `cbrt-unprod` `inv-pow`
1×	`associate--l-` `log-div` `flip3--` `frac-2neg` `associate-r/` `log-rec` `pow-prod-down` `clear-num` `un-div-inv` `-commutative` `flip--` `difference-of-squares`

Counts

4 → 174

Calls

4 calls:

3.0ms	(log (/ 1 n))
18.0ms	(- (- (+ (* 1.0 (log 1)) (+ (* 0.5 (/ 1 n)) 1.0)) (+ (* 1.0 (log (/ 1 n))) (* 0.16666666666666669 (/ 1 (pow n 2))))) 1.0)
10.0ms	(* 0.16666666666666669 (/ 1 (pow n 2)))
5.0ms	(/ 1 (pow n 2))

series23.0ms

Counts

4 → 12

Calls

4 calls:

10.0ms	(log (/ 1 n))
7.0ms	(- (- (+ (* 1.0 (log 1)) (+ (* 0.5 (/ 1 n)) 1.0)) (+ (* 1.0 (log (/ 1 n))) (* 0.16666666666666669 (/ 1 (pow n 2))))) 1.0)
3.0ms	(* 0.16666666666666669 (/ 1 (pow n 2)))
2.0ms	(/ 1 (pow n 2))

simplify61.0ms

Algorithm

egg-herbie

Counts

186 → 186

Iterations

Useful iterations: 2 (46.0ms)

Iter	Nodes	Cost
0	601	1214
1	2307	1013
2	5001	908

prune284.0ms

Filtered

94 candidates to 186 candidates (-97.9%)

Pruning

1 alts after pruning (1 fresh and 0 done)

	Pruned	Kept	Total
New	185	1	186
Fresh	0	0	0
Picked	1	0	1
Done	0	0	0
Total	186	1	187

Merged error: 0b

Counts

187 → 1

localize12.0ms

Local error

Found 1 expressions with local error:

0.7b	(/ 0.16666666666666669 (pow n 2))

rewrite6.0ms

Algorithm

rewrite-expression-head

Rules

24×	`times-frac`
18×	`add-sqr-sqrt` `add-cube-cbrt` `*-un-lft-identity`
12×	`unpow-prod-down`
8×	`associate-/r*`
6×	`add-exp-log`
4×	`unpow2` `sqr-pow`
3×	`div-exp` `add-cbrt-cube` `associate-/l*`
1×	`pow1` `cbrt-undiv` `pow-to-exp` `frac-2neg` `pow-exp` `clear-num` `div-inv` `add-log-exp`

Counts

1 → 49

Calls

1 calls:

4.0ms

(/ 0.16666666666666669 (pow n 2))

series3.0ms

Counts

1 → 3

Calls

1 calls:

3.0ms

(/ 0.16666666666666669 (pow n 2))

simplify106.0ms

Algorithm

egg-herbie

Counts

52 → 52

Iterations

Useful iterations: 2 (16.0ms)

Iter	Nodes	Cost
0	153	244
1	571	217
2	3236	208
3	5002	208

prune251.0ms

Filtered

32 candidates to 52 candidates (-62.5%)

Pruning

1 alts after pruning (0 fresh and 1 done)

	Pruned	Kept	Total
New	52	0	52
Fresh	0	0	0
Picked	0	1	1
Done	0	0	0
Total	52	1	53

Merged error: 0b

Counts

53 → 1

simplify1.0ms

Algorithm

egg-herbie

Iterations

Useful iterations: 0 (0.0ms)

Iter	Nodes	Cost
0	19	8
1	19	8

end0.0ms

sample2.6s

Algorithm

intervals

sampling

Space saved by range analysis: 76.270393%

Space saved by search: 76.270393%

Guaranteed chance to sample good point: 99.588013%

Results

1.4s	3698×	body	1280	valid
652.0ms	2567×	body	640	valid
225.0ms	1292×	body	320	valid
93.0ms	8000×	pre	80	true
51.0ms	443×	body	160	valid

Details

sample122.0ms

simplify154.0ms

prune3.0ms

localize10.0ms

rewrite22.0ms

series30.0ms

simplify55.0ms

prune135.0ms

localize18.0ms

rewrite43.0ms

series23.0ms

simplify61.0ms

prune284.0ms

localize12.0ms

rewrite6.0ms

series3.0ms

simplify106.0ms

prune251.0ms

simplify1.0ms

end0.0ms

sample2.6s

Profiling