How to create a universe?

[kako-f]

Hi!, sorry if this is kind obvious but I'm having a hard time understanding how to create a customized universe model.

According to the readme.

A script with some utility functions is available to help you build your own templates. For instructions please check:
build_universe -h

But it's kind lacking on the help.

I understand that it's necessary to provide a reaction database, do i need to manually create one? in sbml format?

the curate_universe script accepts a SBML formatted file, but it fails because of size limits

cplex.exceptions.errors.CplexSolverError: CPLEX Error 1016: Community Edition. Problem size limits exceeded. Purchase at https://ibm.co/2s0wqSa.

and I'm not seeing a "--solver" option available.

I'm kind lost, any help would be appreciated.

Thanks!