New Record Report for Instance15 in scheduling benchmarks

Thanks to the UB3829 solution you sent me, I was able to find a bug in my modeling. When the Max value of the cover constraint was 0, soft constraints were being interpreted as  hard constraints. This was a bug I made when automatically converting the .ros file. Accordingly, I apologize for the incorrect reports I have made so far regarding the instance 15 LB value. (There is no effect on other instances.)

I have now fixed the bug and discovered new LB and UB values for instance 15, so I would like to report them.

LB: 3827

UB: 3828

I think you can check the UB value in the attached data.

Incumbent LB=2826.36 

Root LB=2823.64