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[Frama-c-discuss] [PROVENANCE INTERNET] Re: New Frama-C version: Fluorine

  • Subject: [Frama-c-discuss] [PROVENANCE INTERNET] Re: New Frama-C version: Fluorine
  • From: cristiano.sousa126 at gmail.com (Cristiano Sousa)
  • Date: Fri, 19 Apr 2013 14:47:40 +0100
  • In-reply-to: <91F3D3B1-1CAB-4313-A534-1FD0FF7B64A0@cea.fr>
  • References: <CAEt_dEohQ_aL9UhxzmAN=1reSMwWewwuXFERnAaPFh2ft7tu0w@mail.gmail.com> <26107_1366378932_r3JDgBS3008854_6CD1ABCC-F4B9-4F61-8DBB-244A2948D3DB@cea.fr> <91F3D3B1-1CAB-4313-A534-1FD0FF7B64A0@cea.fr>
Sent from my Android
No dia 19 de Abr de 2013 14:45, "Lo?c Correnson" <loic.correnson at cea.fr>
escreveu:

> Small detail about your Length axiomatic :
>
> axiomatic Length
>   {
>     logic integer Length{L}(char *s) reads *s;
>
>     axiom string_length{L}:
>        \forall integer n, char *s ; Length_of_str_is(s, n) <==> Length(s)
> == n ;
>   }
>
> This is over-specified. I choose only (==>) in my solution.
> Actually, I'm afraid there is an inconsistency with (<==>).
> Your axioms proves that for all pointer s, Length_of_str_is(s,Length(s)).
> This means that all strings have a length. Which is false, indeed.
>
>         L.
>
>
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