Hello,

         I got a problem about extensional(regular) constraint. The question is 
whether the input of a regular constraint can be a NFA.
         In the detailed description file of DFA ( 
http://www.gecode.org/doc-latest/reference/classGecode_1_1DFA.html ), it is 
said that "the transitions must be deterministic." Is is true? I applied 
regular constraint on some NFA constraint, it seems to be able to give the 
correct result. 

Thank a lot!

XW.  
                                                                                
  
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