Xpress Update 8.13.5

Community Manager

4 years ago

Xpress Update 8.13.5 is now available for Window, Linux, MacOS, and Solaris on x86-64 and Linux on AArch64, you can access these materials here.

This is the latest update for the Xpress 8.13 release branch. Please note that the Windows, Linux, or Solaris archives must be extracted over a prior installation of FICO Xpress 8.13. This update requires an Xpress 8.13 license.

Release Notes:

Xpress Optimizer 39.01.6

Fixed an issue with concurrent decomposition search for MIPs with indicators that could result in a wrong solution.
Fixed a race condition for MIQPs with indicators that could result in non-deterministic behavior.
XPRSfixglobals without rounding should no longer impose a lower bound greater than the semi-continuous lower bound for semi-continuous variables.
Fixed an issue with branching when there are duplicate indicators.
Fixed an issue with the tuner aborting without setting an error code
Fixed error handling of XPRSstrongbranch in case of invalid user input
Fixed compression error when writing large save files
Fixed an uninitialized memory read in presolve
Fixed an issue arising from applying XPRScopyprob to an optimally solved problem for analysis functions (such as XPRSstrongbranch)

Xpress Nonlinear 39.01.06

Fixed an issue with eliminations not checking for integrality that could lead to fractional solutions being returned.
Fixed a potential memory corruption when computing the Hessian of min/max operators.
Added missing exported symbols to the library. The following symbols were not supported but are now:
- XSLPwriteamplsol
- XSLPreadamplsol
- XSLPgetstringattrib
- XSLPgetstringcontrol
- XSLPsetinitval
- XSLPsetdetrow