Average Error: 60.5 → 59.3
Time: 1.0m
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. Using strategy rm
  3. Applied add-log-exp59.6

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

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

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

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

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

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

    \[\leadsto \cos^{-1} \left({\left(\sqrt{\left(\left(\cosh a\right) \bmod \left(a \cdot a\right)\right)} \cdot \left(\log \left(\sqrt{e^{\sqrt{\left(\left(\cosh a\right) \bmod \left(a \cdot a\right)\right)}}}\right) + \log \left(\sqrt{e^{\sqrt{\color{blue}{\log \left(e^{\left(\left(\cosh a\right) \bmod \left(a \cdot a\right)\right)}\right)}}}}\right)\right)\right)}^{\left(\log_* (1 + a)\right)}\right)\]
  13. 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 
(FPCore (a)
  :name "Random Jason Timeout Test 012"
  (acos (pow (fmod (cosh a) (* a a)) (log1p a))))

Details

Time bar (total: 6.4s)Debug log

start2.5s

Algorithm
intervals

setup26.0ms

Pruning

1 alts after pruning (1 fresh and 0 done)

Merged error: 60.8b

localize20.0ms

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 → 15
Calls

2 calls. Slowest were:

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

series26.0ms

Counts
2 → 6
Calls

2 calls. Slowest were:

23.0ms
(fmod (cosh a) (* a a))
2.0ms
(acos (pow (fmod (cosh a) (* a a)) (log1p a)))

simplify30.0ms

Counts
6 → 21
Calls

6 calls. Slowest were:

7.0ms
(acos (pow (fmod (cosh a) (pow a 2)) (log1p a)))
7.0ms
(acos (pow (fmod (cosh a) (pow a 2)) (log1p a)))
7.0ms
(acos (pow (fmod (cosh a) (pow a 2)) (log1p a)))

prune334.0ms

Pruning

5 alts after pruning (5 fresh and 0 done)

Merged error: 59.5b

localize16.0ms

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)))

rewrite4.0ms

Algorithm
rewrite-expression-head
Counts
3 → 30
Calls

3 calls. Slowest were:

3.0ms
(log (exp (fmod (cosh a) (* a a))))
1.0ms
(acos (pow (log (exp (fmod (cosh a) (* a a)))) (log1p a)))
0.0ms
(fmod (cosh a) (* a a))

series7.0ms

Counts
3 → 9
Calls

3 calls. Slowest were:

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

simplify106.0ms

Counts
16 → 39
Calls

16 calls. Slowest were:

19.0ms
(acos (pow (fmod (cosh a) (pow a 2)) (log1p a)))
16.0ms
(acos (pow (fmod (cosh a) (pow a 2)) (log1p a)))
15.0ms
(acos (pow (fmod (cosh a) (pow a 2)) (log1p a)))

prune616.0ms

Pruning

8 alts after pruning (8 fresh and 0 done)

Merged error: 59.5b

localize15.0ms

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)))

rewrite7.0ms

Algorithm
rewrite-expression-head
Counts
4 → 40
Calls

4 calls. Slowest were:

4.0ms
(log (exp (sqrt (fmod (cosh a) (* a a)))))
2.0ms
(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))

series32.0ms

Counts
4 → 12
Calls

4 calls. Slowest were:

20.0ms
(log (exp (sqrt (fmod (cosh a) (* a a)))))
5.0ms
(acos (pow (* (sqrt (fmod (cosh a) (* a a))) (log (exp (sqrt (fmod (cosh a) (* a a)))))) (log1p a)))
4.0ms
(fmod (cosh a) (* a a))
4.0ms
(fmod (cosh a) (* a a))

simplify200.0ms

Counts
22 → 52
Calls

22 calls. Slowest were:

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

prune961.0ms

Pruning

8 alts after pruning (8 fresh and 0 done)

Merged error: 59.5b

localize29.0ms

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))))))

rewrite5.0ms

Algorithm
rewrite-expression-head
Counts
4 → 37
Calls

4 calls. Slowest were:

3.0ms
(log (sqrt (exp (sqrt (fmod (cosh a) (* a a))))))
0.0ms
(fmod (cosh a) (* a a))
0.0ms
(fmod (cosh a) (* a a))

series238.0ms

Counts
4 → 12
Calls

4 calls. Slowest were:

227.0ms
(log (sqrt (exp (sqrt (fmod (cosh a) (* a a))))))
3.0ms
(fmod (cosh a) (* a a))
3.0ms
(fmod (cosh a) (* a a))
3.0ms
(fmod (cosh a) (* a a))

simplify172.0ms

Counts
19 → 49
Calls

19 calls. Slowest were:

22.0ms
(log (* (cbrt (sqrt (exp (sqrt (fmod (cosh a) (* a a)))))) (cbrt (sqrt (exp (sqrt (fmod (cosh a) (* a a))))))))
19.0ms
(log (sqrt (* (cbrt (exp (sqrt (fmod (cosh a) (* a a))))) (cbrt (exp (sqrt (fmod (cosh a) (* a a))))))))
17.0ms
(log (sqrt (sqrt (exp (sqrt (fmod (cosh a) (* a a)))))))

prune807.0ms

Pruning

8 alts after pruning (8 fresh and 0 done)

Merged error: 59.4b

regimes297.0ms

Accuracy

0% (0.2b remaining)

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

bsearch2.0ms