What does it mean that humans can never write (produce) Qur'an?

Salam, Qur'an says that even the combined work force of humans and Jinns could not create something like Qur'an or Qur'an itself , let far go human alone. > Surely, if mankind and jinn were to get together to produce the like of this Qur'an, they will never be able to produce the like of it, howsoever they might help one another.[Al Israa 17: 88] >Oh people, if you doubt the heavenly origin of this Book which We have sent down to Our servant, the Prophet, produce one surah like it.” [Al Baqarah 2:23] Let the **number** of arabic letters (alphabets) in Qur'an be *X* (*X* maybe in the order of 10⁷ to 10⁹, or even more , but finite) . Let *S* denotes the set of all books having *X* letters where each letter is of Arabic language. Clearly, *X* is finite, *S* is a finite set and *S* also contains Qur'an. Obviously humans ***can*** command a computer ( or a supercomputer ) to write all the elements (books) of *S*, and certainly Qur'an would also be written among all the possible books ( in a finite time). So, how is it possible that humans could never write Qur'an given that Qur'an is having a finite length (of text) and just a particular permutation of *X* letters which can be produced by a computer program in a finite time ? **NOTE**: One may argue that Allah will never let humans use a supercomputer to do this task or a supercomputer will freeze if commanded to do so due to order of Allah, etc. and hence the verse is correct that humans would never produce it. ***BUT*** I am asking about the capability of humans that they can create Qur'an or not by themselves and the apparent contradiction to Qur'an. I'm not asking that it would happen in our real life or not. Thanks !