使用C中的数组实现链接列表时的Segfault

Alrighty, first off, I am 100% positive that it is not my print function that is messing up this program, but my output is printing "pre" and then segfaulting. I believe that it's happening within my create_list function. My logic in that function is that the array (the linked-list typedef is Node, so head is Node*, the array that holds the heads is Node**) holds the heads of several different linked-lists, and stores each branch according to the index (first number in the input). But obviously my logic in programming isn't equal to what I'm thinking. Any assistance would be great, thanks.Alrighty, first off, I am 100% positive that it