[gecode-users] Problem with constraint

Ujhelyi Zoltan uz602 at hszk.bme.hu
Mon Aug 25 22:40:31 CEST 2008


Ok, I see.

Thank you for looking into the problem,

Zoli
On 2008.08.25., at 21:48, Guido Tack wrote:

> Ujhelyi Zoltan wrote:
>> I tested the new Gecode/J 2.2.0. I am very grateful for your work,  
>> but it did not work for me as I expected. I modified the  
>> constraints as you showed, but it did not prove the required  
>> equality.
>
> I had another look, and unfortunately, we cannot provide stronger  
> pruning for BExprs at the moment.  The technical explanation is that  
> Exprs are translated to linear constraints, and there just is no  
> ICL_DOM for reified linear constraints.  I just added the arguments,  
> but didn't realize that the actual pruning wouldn't happen.
>
> The only workaround is currently to post the reified constraints  
> directly, sorry.
>
> Cheers,
> 	Guido
>





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