One variable with long long int domain. One constraint. Very very long compile time.

[DannyGeist]

var -536870912..536870912: helloworld_str2_cpu_id;
constraint helloworld_str2_cpu_id != 0;
solve satisfy;

[zayenz]

Are you compiling with -O5? That mode is dependent on the size of the domains.

[DannyGeist]

No. -O5 is slow on big mzn models

[guidotack]

This is due to a limitation in the current FlatZinc text format, which cannot represent domains with holes very well. For this example, it will have to create a text file that lists all the possible domain values, rather than something like this:

var range_list([-536870912..-1,1..536870912]): helloworld_str2_cpu_id;

We don't have a workaround for this bug at the moment. Solvers that are directly interfacing to MiniZinc don't run into this issue (e.g. the MIP solvers). We are planning to introduce range list syntax for FlatZinc in a future release.