// Go through the bitcode file line by line
			String callerFunction = "";
			int callerUses = 0;
			while ((line = reader.readLine())!= null) {
				if (line.contains("Call")) {
					// Check the caller function name and its uses
					callerUses = Integer.parseInt(line.split("=")[1]);
					callerFunction = (callerUses == 0)? "null": line.split("'")[1];

				} else if (line.contains("'")) {
					// Check the callee function name
					String calleeFunction = line.split("'")[1];
					// Add the caller/callee pair to the hashtable
					output.append(callerFunction + "(" + callerUses + " uses):" + calleeFunction + "\n");
				}

			}