Frama-C-discuss mailing list archives

This page gathers the archives of the old Frama-C-discuss archives, that was hosted by Inria's gforge before its demise at the end of 2020. To search for mails newer than September 2020, please visit the page of the new mailing list on Renater.

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Frama-c-discuss] Can i specify/proove a function to be "just called"?

  • Subject: [Frama-c-discuss] Can i specify/proove a function to be "just called"?
  • From: ds.verification at flecsim.com (ds.verification at flecsim.com)
  • Date: Tue, 14 Jan 2014 12:38:19 +0100 (CET)
Hello everybody,

i have browsed the ACSL reference manual in search for a predicate or other
gear to express and prove whether some function is called by some other
function.
So, the idea is that for the function being called that its call has no
(visible-to-Frama-C) effect but i only need to ensure it is called: The
function is "trustable" and has side effects which are out of scope of the
verification.

I thought of something like:

/* Does some magic (e.g. external assembly module), but has no contract
 * its own
 */
extern void foo(int val);

int counter = 0;

/* @ensures \called(foo(\old(counter)));
   @ensures \counter=\old(counter)+1;
 */
void test1()
{
    foo(counter);
    counter++;
}

Is this possible in ACSL?

Thanks in advance

	Daniel