Xpress Update 9.2.4

Community Manager

3 years ago

Xpress Updates 9.2.4 is now available for Window, MacOS, Linux on x86-64 and Linux on AArch64, access these updates here.

These are the latest updates for the Xpress 9.2 release branch and requires a matching license. Please note that these archives must be extracted over a prior installation of FICO Xpress 9.2.

Release Notes for 9.2.4

Xpress Optimizer 42.01.03

Calling XPRSchgobj on a problem in a presolved or solving state will now result in an error.
Fixed an issue where delayed rows or model cuts were not restored properly if a MIP is declared infeasible during presolve.
Fixed a potential memory corruption when using HEURDIVESTRATEGY=11 or 12.
Fixed a potential memory leak.
Fixed an error with handling semi-continuous columns.
Fixed an issue causing wrong RLT cuts on models with indicators that are activated with value 0.

Xpress Interfaces 42.01.03 (Python, R, Matlab, .NET, Java)

Functions to query solution information (value, slack, reduced cost, dual) for single items were fixed in the Java and C# APIs.
Fixed a potential race condition in BCL cleanup in .NET.
Fixed a potential double-deletion/crash in cleanup in BCL Java.
Fixed a Python error when adding a large number of variables to a problem.
Python functions now raise a MemoryError when they fail to allocate memory.
Python 3.7 is no longer supported since it has reached end of life.