[SystemSafety] Collected stopgap measures (Hoare)

[Nick Tudor]

Well I can't argue with your sums, but then if you come from a false
premise anything can be 'proven'...

Who said anything about manual proofs....this was, as I pointed out,
automatic....

And BTW, I don't really mind if you believe me or not.


Nick Tudor
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On Fri, 16 Nov 2018 at 16:03, Derek M Jones <derek at knosof.co.uk> wrote:

> Nick,
>
> > Nope, this is formal proof, and nope, it is not marketing...cheeky!  Use
> of
>
> Four man months to process 350,000 SLoC.
>
> Say 20 man days per month, so 80 man days.
> Which is around 4,500 SLoC per day, for 80 days.
>
> Not believable.
>
> Now 4-man months to run the tools over something that has already
> been written and check the results.  That is believable.
>
> How long might it have taken to write a proof?
>
> If it took 6-man years to write a proof of 18K, then 350K is
> going to require 100+ man years.
>
>
> --
> Derek M. Jones           Software analysis
> tel: +44 (0)1252 520667  blog:shape-of-code.coding-guidelines.com
>
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