Average Error: 60.5 → 59.3
Time: 1.1m
Precision: 64
Internal Precision: 128
\[\cos^{-1} \left({\left(\left(\cosh a\right) \bmod \left(a \cdot a\right)\right)}^{\left(\log_* (1 + a)\right)}\right)\]
\[\cos^{-1} \left({\left(\left(\log \left(\sqrt{e^{\sqrt{\log \left(e^{\left(\left(\cosh a\right) \bmod \left(a \cdot a\right)\right)}\right)}}}\right) + \log \left(\sqrt{e^{\sqrt{\left(\left(\cosh a\right) \bmod \left(a \cdot a\right)\right)}}}\right)\right) \cdot \sqrt{\left(\left(\cosh a\right) \bmod \left(a \cdot a\right)\right)}\right)}^{\left(\log_* (1 + a)\right)}\right)\]

Error

Bits error versus a

Derivation

  1. Initial program 60.5

    \[\cos^{-1} \left({\left(\left(\cosh a\right) \bmod \left(a \cdot a\right)\right)}^{\left(\log_* (1 + a)\right)}\right)\]
  2. Initial simplification60.5

    \[\leadsto \cos^{-1} \left({\left(\left(\cosh a\right) \bmod \left(a \cdot a\right)\right)}^{\left(\log_* (1 + a)\right)}\right)\]
  3. Using strategy rm
  4. Applied add-log-exp59.6

    \[\leadsto \cos^{-1} \left({\color{blue}{\left(\log \left(e^{\left(\left(\cosh a\right) \bmod \left(a \cdot a\right)\right)}\right)\right)}}^{\left(\log_* (1 + a)\right)}\right)\]
  5. Using strategy rm
  6. Applied add-sqr-sqrt59.6

    \[\leadsto \cos^{-1} \left({\left(\log \left(e^{\color{blue}{\sqrt{\left(\left(\cosh a\right) \bmod \left(a \cdot a\right)\right)} \cdot \sqrt{\left(\left(\cosh a\right) \bmod \left(a \cdot a\right)\right)}}}\right)\right)}^{\left(\log_* (1 + a)\right)}\right)\]
  7. Applied exp-prod59.6

    \[\leadsto \cos^{-1} \left({\left(\log \color{blue}{\left({\left(e^{\sqrt{\left(\left(\cosh a\right) \bmod \left(a \cdot a\right)\right)}}\right)}^{\left(\sqrt{\left(\left(\cosh a\right) \bmod \left(a \cdot a\right)\right)}\right)}\right)}\right)}^{\left(\log_* (1 + a)\right)}\right)\]
  8. Applied log-pow59.2

    \[\leadsto \cos^{-1} \left({\color{blue}{\left(\sqrt{\left(\left(\cosh a\right) \bmod \left(a \cdot a\right)\right)} \cdot \log \left(e^{\sqrt{\left(\left(\cosh a\right) \bmod \left(a \cdot a\right)\right)}}\right)\right)}}^{\left(\log_* (1 + a)\right)}\right)\]
  9. Using strategy rm
  10. Applied add-sqr-sqrt59.3

    \[\leadsto \cos^{-1} \left({\left(\sqrt{\left(\left(\cosh a\right) \bmod \left(a \cdot a\right)\right)} \cdot \log \color{blue}{\left(\sqrt{e^{\sqrt{\left(\left(\cosh a\right) \bmod \left(a \cdot a\right)\right)}}} \cdot \sqrt{e^{\sqrt{\left(\left(\cosh a\right) \bmod \left(a \cdot a\right)\right)}}}\right)}\right)}^{\left(\log_* (1 + a)\right)}\right)\]
  11. Applied log-prod59.3

    \[\leadsto \cos^{-1} \left({\left(\sqrt{\left(\left(\cosh a\right) \bmod \left(a \cdot a\right)\right)} \cdot \color{blue}{\left(\log \left(\sqrt{e^{\sqrt{\left(\left(\cosh a\right) \bmod \left(a \cdot a\right)\right)}}}\right) + \log \left(\sqrt{e^{\sqrt{\left(\left(\cosh a\right) \bmod \left(a \cdot a\right)\right)}}}\right)\right)}\right)}^{\left(\log_* (1 + a)\right)}\right)\]
  12. Using strategy rm
  13. Applied add-log-exp59.3

    \[\leadsto \cos^{-1} \left({\left(\sqrt{\left(\left(\cosh a\right) \bmod \left(a \cdot a\right)\right)} \cdot \left(\log \left(\sqrt{e^{\sqrt{\left(\left(\cosh a\right) \bmod \left(a \cdot a\right)\right)}}}\right) + \log \left(\sqrt{e^{\sqrt{\color{blue}{\log \left(e^{\left(\left(\cosh a\right) \bmod \left(a \cdot a\right)\right)}\right)}}}}\right)\right)\right)}^{\left(\log_* (1 + a)\right)}\right)\]
  14. Final simplification59.3

    \[\leadsto \cos^{-1} \left({\left(\left(\log \left(\sqrt{e^{\sqrt{\log \left(e^{\left(\left(\cosh a\right) \bmod \left(a \cdot a\right)\right)}\right)}}}\right) + \log \left(\sqrt{e^{\sqrt{\left(\left(\cosh a\right) \bmod \left(a \cdot a\right)\right)}}}\right)\right) \cdot \sqrt{\left(\left(\cosh a\right) \bmod \left(a \cdot a\right)\right)}\right)}^{\left(\log_* (1 + a)\right)}\right)\]

Reproduce

herbie shell --seed 2018360 +o rules:numerics
(FPCore (a)
  :name "Random Jason Timeout Test 012"
  (acos (pow (fmod (cosh a) (* a a)) (log1p a))))

Details

Time bar (total: 7.0s)Debug log

start2.5s

Algorithm
intervals

setup53.0ms

Pruning

1 alts after pruning (1 fresh and 0 done)

Merged error: 60.8b

localize41.0ms

Local error

Found 2 expressions with local error:

60.5b
(fmod (cosh a) (* a a))
2.3b
(acos (pow (fmod (cosh a) (* a a)) (log1p a)))

rewrite4.0ms

Algorithm
rewrite-expression-head
Counts
2 → 19
Calls

2 calls. Slowest were:

1.0ms
(fmod (cosh a) (* a a))
1.0ms
(acos (pow (fmod (cosh a) (* a a)) (log1p a)))

series11.0ms

Counts
2 → 6
Calls

2 calls. Slowest were:

8.0ms
(fmod (cosh a) (* a a))
2.0ms
(acos (pow (fmod (cosh a) (* a a)) (log1p a)))

simplify48.0ms

Counts
6 → 25
Calls

6 calls. Slowest were:

8.0ms
(acos (pow (fmod (cosh a) (pow a 2)) (log1p a)))
8.0ms
(acos (pow (fmod (cosh a) (pow a 2)) (log1p a)))
8.0ms
(acos (pow (fmod (cosh a) (pow a 2)) (log1p a)))

prune349.0ms

Pruning

5 alts after pruning (5 fresh and 0 done)

Merged error: 59.5b

localize24.0ms

Local error

Found 3 expressions with local error:

60.5b
(fmod (cosh a) (* a a))
12.7b
(log (exp (fmod (cosh a) (* a a))))
2.3b
(acos (pow (log (exp (fmod (cosh a) (* a a)))) (log1p a)))

rewrite7.0ms

Algorithm
rewrite-expression-head
Counts
3 → 36
Calls

3 calls. Slowest were:

5.0ms
(log (exp (fmod (cosh a) (* a a))))
2.0ms
(acos (pow (log (exp (fmod (cosh a) (* a a)))) (log1p a)))
0.0ms
(fmod (cosh a) (* a a))

series12.0ms

Counts
3 → 9
Calls

3 calls. Slowest were:

5.0ms
(acos (pow (log (exp (fmod (cosh a) (* a a)))) (log1p a)))
4.0ms
(fmod (cosh a) (* a a))
3.0ms
(log (exp (fmod (cosh a) (* a a))))

simplify164.0ms

Counts
16 → 45
Calls

16 calls. Slowest were:

23.0ms
(log (* (cbrt (exp (fmod (cosh a) (* a a)))) (cbrt (exp (fmod (cosh a) (* a a))))))
17.0ms
(acos (pow (fmod (cosh a) (pow a 2)) (log1p a)))
17.0ms
(acos (pow (fmod (cosh a) (pow a 2)) (log1p a)))

prune724.0ms

Pruning

8 alts after pruning (8 fresh and 0 done)

Merged error: 59.5b

localize37.0ms

Local error

Found 4 expressions with local error:

60.5b
(fmod (cosh a) (* a a))
60.5b
(fmod (cosh a) (* a a))
11.5b
(log (exp (sqrt (fmod (cosh a) (* a a)))))
2.3b
(acos (pow (* (sqrt (fmod (cosh a) (* a a))) (log (exp (sqrt (fmod (cosh a) (* a a)))))) (log1p a)))

rewrite4.0ms

Algorithm
rewrite-expression-head
Counts
4 → 48
Calls

4 calls. Slowest were:

2.0ms
(log (exp (sqrt (fmod (cosh a) (* a a)))))
1.0ms
(acos (pow (* (sqrt (fmod (cosh a) (* a a))) (log (exp (sqrt (fmod (cosh a) (* a a)))))) (log1p a)))
0.0ms
(fmod (cosh a) (* a a))

series20.0ms

Counts
4 → 12
Calls

4 calls. Slowest were:

13.0ms
(log (exp (sqrt (fmod (cosh a) (* a a)))))
3.0ms
(acos (pow (* (sqrt (fmod (cosh a) (* a a))) (log (exp (sqrt (fmod (cosh a) (* a a)))))) (log1p a)))
2.0ms
(fmod (cosh a) (* a a))
2.0ms
(fmod (cosh a) (* a a))

simplify220.0ms

Counts
22 → 60
Calls

22 calls. Slowest were:

17.0ms
(acos (pow (fmod (cosh a) (pow a 2)) (log1p a)))
17.0ms
(acos (pow (fmod (cosh a) (pow a 2)) (log1p a)))
16.0ms
(acos (pow (fmod (cosh a) (pow a 2)) (log1p a)))

prune1.0s

Pruning

8 alts after pruning (8 fresh and 0 done)

Merged error: 59.5b

localize17.0ms

Local error

Found 4 expressions with local error:

60.5b
(fmod (cosh a) (* a a))
60.5b
(fmod (cosh a) (* a a))
60.5b
(fmod (cosh a) (* a a))
11.5b
(log (sqrt (exp (sqrt (fmod (cosh a) (* a a))))))

rewrite6.0ms

Algorithm
rewrite-expression-head
Counts
4 → 45
Calls

4 calls. Slowest were:

5.0ms
(log (sqrt (exp (sqrt (fmod (cosh a) (* a a))))))
0.0ms
(fmod (cosh a) (* a a))
0.0ms
(fmod (cosh a) (* a a))

series156.0ms

Counts
4 → 12
Calls

4 calls. Slowest were:

150.0ms
(log (sqrt (exp (sqrt (fmod (cosh a) (* a a))))))
2.0ms
(fmod (cosh a) (* a a))
2.0ms
(fmod (cosh a) (* a a))
2.0ms
(fmod (cosh a) (* a a))

simplify129.0ms

Counts
19 → 57
Calls

19 calls. Slowest were:

18.0ms
(log (sqrt (exp (sqrt (fmod (cosh a) (pow a 2))))))
17.0ms
(log (sqrt (exp (sqrt (fmod (cosh a) (pow a 2))))))
12.0ms
(log (* (cbrt (sqrt (exp (sqrt (fmod (cosh a) (* a a)))))) (cbrt (sqrt (exp (sqrt (fmod (cosh a) (* a a))))))))

prune1.1s

Pruning

8 alts after pruning (8 fresh and 0 done)

Merged error: 59.4b

regimes311.0ms

Accuracy

0% (0.2b remaining)

Error of 59.3b against oracle of 59.1b and baseline of 59.3b

bsearch2.0ms