LINGO’s model generator ran out of working memory. The model generator converts the text of your LINGO model to an expanded form suitable for an appropriate solver engine. On most platforms you can increase the amount of working memory allocated to the model generator. Note that memory set aside for LINGO’s model generator will not be available to LINGO’s various solver engines. Given this, you should not allocate an overly excessive amount of memory to the generator.

In Windows versions, select the Solver|Options command, then the General tab, and in the Generator Memory Limit box increase the amount of working memory. Press the Save button and then restart LINGO. You can verify the new memory allotment by issuing the Help|About LINGO command.

On other platforms, use the following commands:

SET MAXMEMB n

FREEZE

where n is the new memory allotment in megabytes. Exit LINGO and restart. Once LINGO restarts, you can verify the new memory allotment with the MEM command.