[klee-dev] Complete Input with klee

[ANAS faruqui]

So if a condition has klee_assume(false) just after it, then would this
mean that klee will not take that path  (or if it has klee_assume(true)
then it would not take the other path.)

can someone tell me more about klee_assume() and klee_assert().

Thanks


On Mon, Oct 28, 2013 at 11:55 AM, Urmas Repinski <urrimus at hotmail.com>wrote:

> Hi,
>
> Using same analogy you can use klee_assume(false);
>
> So  klee_assume(a != 5 & b != 5 & c !=5) breaks the path when a==5 || b==5
> || c==5, when condition is false, then klee_assume(false); will get all
> paths, that reached the klee_assume location, so using
> klee_assume(a != 5 & b != 5 & c !=5)  is same as to use
>
>
> int a, b, c;
>
> if(a==5)
> klee_assume(false);
>
> if (b==5)
> klee_assume(false);
>
> if (c==5)
> klee_assume(false);
>
> printf("success")'
>
> Second one is possibly what you need.
>
> Urmas Repinski.
>
> ------------------------------
> From: anas.faruqui at gmail.com
> Date: Mon, 28 Oct 2013 11:29:48 -0400
> To: loi.luuthe at gmail.com
> CC: klee-dev at imperial.ac.uk
> Subject: Re: [klee-dev] Complete Input with klee
>
>
> Thanks for your reply.
>
> i am looking for a way where i can guide a condition to be always true or
> false. Is there a way through which i can tell klee to do that?
>
>
> On Mon, Oct 28, 2013 at 12:20 AM, Loi Luu <loi.luuthe at gmail.com> wrote:
>
> So I think you want something like klee_assume(a != 5 & b != 5 & c !5)
>
> Thanks,
>
>
> On Mon, Oct 28, 2013 at 12:06 PM, ANAS faruqui <anas.faruqui at gmail.com>wrote:
>
> Hello all,
>
> I want klee to output only the complete inputs and do not take the early
> termination paths.
>
> For example : if we have a code as following
>
> int a, b, c;
>
> if(a==5)
> exit(1);
>
> if (b==5)
> exit(1);
>
> if (c==5)
> exit(1);
>
> printf("success")'
>
> KLEE gives me many cases which include a or b or c = 5.
>
> What changes can i do (in KLEE   or in the code) so that it will only
> output cases which would contain all a, b, c, !=5.
>
> In other words can I force klee to make a condition always false or true?
>
>
> thanks
>
> _______________________________________________
> klee-dev mailing list
> klee-dev at imperial.ac.uk
> https://mailman.ic.ac.uk/mailman/listinfo/klee-dev
>
>
>
>
> --
> Loi, Luu The (Mr.)
> RA at Security Lab, SoC, NUS
>
>
>
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>
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