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[Frama-c-discuss] Speedup Frama-C/WP generating proof obligations

  • Subject: [Frama-c-discuss] Speedup Frama-C/WP generating proof obligations
  • From: junkil.park at (Junkil (David) Park)
  • Date: Mon, 31 Aug 2015 10:08:33 -0400
  • In-reply-to: <>
  • References: <> <>

Hi Patrick,

Thank you for your answer.

Sorry, Qed Simplifier cannot be turned off completely.

Is there a way for me to measure the running time of Qed Simplifier (or,
the running time of each component of Qed Simplifier if possible)? Is there
any other options that I can control for the behavior of Qed Simplifier?

It is because I am trying to verify hundreds of C code using the
Frama-C/WP—Why3--Z3 tool chain. Some C code are 5,000 lines long, some are
30,000 lines long, some are longer. In the toolchain, I currently
experience that the bottleneck is Frama-C/WP. For one case, while
Frama-C/WP takes 900 seconds, Why3—Z3 take less than 1 second. If I’m
right, I think that the Qed Simplifier is related to the reasons why
Frama-C/WP is slow. So, I’d like to have more control of the behavior of
Qed, and do a test.


On Mon, Aug 31, 2015 at 1:53 AM, BAUDIN Patrick <Patrick.Baudin at>

> Le 27/08/2015 20:53, Junkil (David) Park a écrit :
> I wonder if Frama-C/WP internally makes any attempts to prove those goals.
> I wonder if I set an option flag for Frama-C not to try to prove them, but
> just to generate the proof obligations.
> The option "-wp-proof none" skips the file generation for external
> provers.
> I tried to turn off the Qed Simplifier's options (-wp-no-simpl,
> -wp-no-clean, ...), but it didn't help reducing the running time of
> Frama-C. Are there be any other options that can help reducing the time of
> generating the proof obligations only?
> Sorry, Qed Simplifier cannot be turned off completly.
> Thanks,
> Junkil
> Patrick.
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> Frama-c-discuss mailing list
> Frama-c-discuss at
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