Timetable can not generate with this input file

[thanhnambkhn]

Dear Liviu Lalescu,

Here is my input file. Fet can not generate time table.

When I deactivated these constraints:
+ Teachers not available time
OR
+ Activities have preferred time slots.
the time table was generated successfully.

Could you take a look at it and suggest me why this input file doesn't work?

Thank you so much!

[Liviu Lalescu]

I had only a quick look. It might be that the file is too constrained. You might need to relax some constraints.