Exploding memory CBC solver with 1.14.2 compared to 1.13.0 #419
Description
Describe the bug
The CBC solver uses significantly more memory for the same problems since upgrading from mip 1.13.0 to 1.14.2. In some cases this increase is of such magnitude it causes OOM errors in the container.
To Reproduce
Set up Linux container and solve the attached LP problem with mip 1.13.0 and 1.14.2.
Expected behavior
Similar memory usage for mip 1.14.2 as in 1.13.0
Desktop (please complete the following information):
- Operating System, version: Linux container
- Python version: 3.9 and 3.12
- Python-MIP version (we recommend you to test with the latest version): 1.14.2 vs 1.13.0
Additional context
Comparisons for 5 use cases between different mip and python versions
