--- layout: fc_discuss_archives title: Message 24 from Frama-C-discuss on November 2011 ---
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[Frama-c-discuss] command 'why-dp' failed



Hi,
Suggestion: you should use -wp-out <dir> option of WP to keep all  
generated files in <dir>.
Then, have a look at <dir>/ 
runtime_equal_loop_inv_146_established_po_why.txt which is the log of  
all operations runs by WP on this goal, as indicated in the WP manual.
You also have this log available from the GUI (-wp-out <dir> is not  
necessary in this case) in the 'WP Proof Obligations' panel.
Probably, Cvc3 have failed in some way... Indeed, we use Cvc3 very  
rarely !
	L.


Le 12 nov. 11 ? 02:20, ??? a ?crit :

> Hi,
>     When wp plugin is loaded in program to prove some properties,  
> frama-c raised an error:
>
>            [wp] user error: command 'why-dp' failed.
>
> and the description is:
>
>            [wp] [Cvc3] Goal runtime_equal_loop_inv_146_preserved :  
> Valid
>            [wp] user error: command 'why-dp' failed.
>            why-dp -smt-solver cvc3 -batch
>                   /tmp/wp33b87e.dir/ 
> runtime_equal_loop_inv_146_established_po_why.smt
>            [wp] [Cvc3] Goal runtime_equal_loop_inv_146_established :  
> Unknown
>
> Is that because of it has forked too many threads(4?) or the memory  
> or CPU is not enough?
>
> Best Regards to You.
> Henry
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