@Test
	public void transferInstrSTORE_testInvalidRegisterRef() { //Checks STORE instruction not created with invalid register ref.
		try {
			instr = new TransferInstr(Opcode.STORE, 50, 17);
		}
		catch (IllegalStateException e) {
			System.out.println(e.getMessage());
		}
		assertNull(instr);
	}