[gecode-users] problame when find the optima solution

[ruanzheng]

Dear all:

I override the "constrain" function to get the optima solution. But when I try to get some IntVar variables of the space in the function,
a runtime error occurs, it says I  try to get the value of some unassigned IntVar variable. 
What's the possible mistake of my code?

Thanks in advance!

 
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