[gecode-users] Problem with Flatzinc 1.0 on Gecode 2.0

Guido Tack tack at ps.uni-sb.de
Thu Feb 7 16:06:50 CET 2008


Mikael Zayenz Lagerkvist wrote:

> On Feb 7, 2008 11:40 AM, Raffaele Cipriano <cipriano at dimi.uniud.it>  
> wrote:
>> $ Error: Registry: Constraint int_lin_lt not found in line no. 280
>>
>>    and line 280 is
>>
>> 279    constraint
>> 280          int_lin_lt([ -1, 1, 1, -1 ], [ mark[0], mark[1],  
>> mark[4],
>> mark[5] ], 0);
>>
>> It seems that it doesn't recognize the int_lin_lt constrain...the  
>> file
>> (that correctly runs using $flatzinc golomb_0.fzn ) was generated  
>> with
>> the mzn2fzn parser...suggestion?
>
>
> The current FlatZinc specification [1] does not include int_lin_lt as
> a constraint, so this is actually a bug in the translation or the
> specification (see Section A.1 Comparison operations).

Apparently, the online specification is not the newest version.  I'll  
add the new constraints and release an updated FlatZinc/Gecode soon.

Cheers,
	Guido





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