First, if God had created satan with no truth in him then God would have created an evil creature,so satan had to have originally been good. The word ABODE(means to stand),so satan had to have originally ABODE in the truth. Read it this way, satan abode not in the truth(did not stay in truth). End of sentence,now. Because there is no truth in him when he speaks a lie from his own he speaks for a liar he is and the father of it,two different statements. First statement is that satan did not stay in truth, second statement is that satan is the father of the lie.
To say that satan did not stay(stand )in the truth because there is no truth in him, is like saying I did not remain dressed because I was always naked(in order not to remain dressed I first had to be dressed)...satan had to first abide in the truth before he could not abode in the truth,you cannot leave something you were never a part of.