:- module queens. :- pragma termination_info(queens.queens((builtin.in), (builtin.out)), finite(0, [yes, no]), cannot_loop). :- pragma termination2_info(queens.queens((builtin.in), (builtin.out)), constraints([eq([term(0, r(1, 1)), term(1, r(-1, 1))], r(0, 1))]), not_set, cannot_loop).