First of all, thank you for the feedback and I apologize for perhaps not being as clear as I could have been nor giving as much information as I should have. Indeed, the critical fault lied in the requested source file. Originally the .txt file looked something like this:

555555555555553333333333333333310100000000000000000111000001333333333333333333334333343

When coming up with the method I naïvely just copied what was given to me rather than fully understanding what was going on. Even a surface level understanding of strtok() would have likely prevented this simple mistake. strtok()'s second input is a delimiter which the function needs to properly separate the string of chars into ints, after all how would it know if the first number was 5 or 5555? Now knowing this I edited the file to look more like this:

5 5 5 5 5 5 5 5 5 5 5 5 5 5 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 0 0 0 0 0 1 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 4 3 3 3 3 4 3

Now, strtok(lineBuffer, " ") properly separates and stores the numbers as individual integers rather than one enormously long number which I believe is what was happening.

Now, as far as I'm aware everything is working as intended with that fix to the file. However--and maybe this is a question for a separate post--Many commented or at least illuded against using fgets() as a method to read a file. Initially why I chose this was so that I could perhaps store multiple arrays in one file instead of needing a separate file I could just choose which line to read in one file. I was thinking this might make things cleaner, but if this can be achieved just as well and with better reliability using a different method, I'd be open to it.