robertHowlett

I fixed this in my case by downloading the latest cbc (2.10.11) and manually overwriting the binary installed via pulp.

Now simplfied to 35 rows; 30 cols; 81 nonzeros; 2 integer variables (2 binary) [feasible_2.mps.txt](https://github.com/user-attachments/files/19739332/feasible_2.mps.txt) [infeasible_2.mps.txt](https://github.com/user-attachments/files/19739336/infeasible_2.mps.txt)