It's not quite that. If the output of the program was a standard text file, then no, because nothing of the program was copied. If for example the output of the

It's not quite that. If the output of the program was a standard text file, then no, because nothing of the program was copied. If for example the output of the program included certain fonts or graphics (e.g. PDF), those are still copyrighted. To use those fonts, you'd need a licence, in this case the same licence you need for the program.