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[Frama-c-discuss] existential variables in ACSL spec in Frama-C/WP Sodium

  • Subject: [Frama-c-discuss] existential variables in ACSL spec in Frama-C/WP Sodium
  • From: loic.correnson at cea.fr (Loïc Correnson)
  • Date: Mon, 30 Mar 2015 11:05:39 +0200
  • In-reply-to: <CAL+X0e=9dKX0KTCObEOghx2AzQX+6_1Dg5Cfmp0VoJzEtNP70A@mail.gmail.com>
  • References: <CAL+X0e=9dKX0KTCObEOghx2AzQX+6_1Dg5Cfmp0VoJzEtNP70A@mail.gmail.com>
Yes, this is a bug indeed.
You can turn around with -wp-no-let.
	L.

> Le 30 mars 2015 ? 03:06, Junkil (David) Park <junkil.park at cis.upenn.edu> a ?crit :
> 
> Hi,
> 
> There seems to be something wrong with Frama-C/WP (Sodium) with 5 or more existential variables in the specification.
> 
> // dummy.c
> void dummy()
> {
> 	double d = 7;
> 	//@ assert \exists real r1, r2, r3, r4, r5; d == r1 + r2 + r3 + r4 + r5;
> }
> 
> > frama-c -wp dummy.c
> [kernel] Parsing FRAMAC_SHARE/libc/__fc_builtin_for_normalization.i (no preprocessing)
> [kernel] Parsing dummy.c (with preprocessing)
> [wp] Running WP plugin...
> [wp] Collecting axiomatic usage
> [wp] warning: Missing RTE guards
> [wp] 1 goal scheduled
> [wp] Proved goals:    0 / 1
> 
> In the example above, Frama-C/WP doesn't try to prove it. 
> 
> In addition, for the command below, it generate nothing.
> > frama-c -wp -wp-prover why3 -wp-gen -wp-out dummy dummy.c
> 
> With 4 existential variables instead of 5, Frama-C/WP works fine. 
> 
> 
> Am I missing something? Or, is it an issue of the new version of Frama-C?
> 
> Thanks,
> Junkil
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