Creating a buffer in Nusmv - asynchronous

Question

I'm attempting to write code for a buffer in NuSMV. The buffer has 6 wires. 4 input wires (reset, clock, read_enable, and write_enable) and 2 output wires(full and empty). Wires are modeled as boolean true|false (true being high voltage). The first
wire is an asynchronous (instant) reset. If there is a high voltage, the buffer
goes instantly to the empty configuration. Other wires are operated in the
synchronous mode triggered by a rising edge on the clock wire. The buffer is of Size 3. There are specific behaviors.
I created the following code but I cannot think of what the Main Module could be.
MODULE buffer (reset, clock, read_enable, write_enable, full, empty)
-- inputs
-- reset : boolean; -- asynchronous (instant) reset
-- clock : boolean; -- clock
-- read_enable : boolean; -- data read request = enqueue
-- write_enable : boolean; -- data write request = dequeue
-- outputs
-- full : boolean; -- is the buffer full?
-- empty : boolean; -- is the buffer empty?
-- use SIZE for the maximal buffer size
-- TODO ....
VAR
reset: {False, True};
clock: {False, True};
read_enable: {False, True};
write_enable: {False, True};
full: {False, True};
empty: {False, True};
ASSIGN
SIZE := 0;
init (reset) := True;
next (reset) := case
reset = True : empty = True;
esac;
next (clock) := case
write_enable = True : clock = True & empty = False;
esac;
next (write_enable):= case
write_enable = True : SIZE + 1 & SIZE <=3;
esac;
next (read_enable) := case
write_enable = True & read_enable = True : SIZE != SIZE +1;
esac;
next (full) := case
full = True & SIZE = 3 & write_enable = True : reset = True;
esac;
MODULE main
VAR
reset: boolean;
turn: boolean;
pro0: process buffer(reset, 0, clock, read_enable, write_enable);
pro1: process buffer(reset, 1, clock, read_enable, write_enable);
ASSIGN
init(turn) := 0;
FAIRNESS !(reset = True)
FAIRNESS !(reset = False)
MODULE prc(reset, turn, pro0, pro1)
ASSIGN
init(reset) := 0;
next (reset) := case
(reset = 0) : {0,1};
(reset = 1) : {0};
1 : reset;
esac;
Please assist
I've tried following basic NuSMV guides on how to write the code but I have no experience in this language.