Design a communication protocol, where the communication

between the Sender and the Receiver is done through a lossy and noisy

Channel.

Description of the function: The Sender sends the message, and awaits the

acknowledgment from the Receiver. Since the communication is done

through the Channel, the message might be passed to the Receiver after

$1$ time unit or lost. If the Receiver receives the message, it will send the

acknowledgement after $1$ time unit. Again, this is done through the

Channel, so the acknowledgement can be sent to the Sender after $1$ time

unit or lost. In case the acknowledgement does not reach the Sender in $5$

time units $($either the message or the acknowledgement is lost$),$ the

Sender will send the message again without dely. Similarly, after the

acknowledgement is received, the Sender will send another message

without delay.

Model the system in UPPAAL and verify the following properties:

$$ The system cannot deadlock;

$$ The receiver might send an acknowledgment;

$$ The messages sent by the sender are eventually received by

the receiver.