Formal Modeling and Verification for MVB

Listing 3

PROMELA codes of the asynchronous bus.

active proctype Asynchronous_Bus ( ) {

   atomic  {

   if

     :: BA_0. out_count > 0 ->…  /*receive a frame from BA_0*/

     ::  else ->skip;

   fi;

   if

     :: !recv0 && !recv1 && !recv2 ->skip;

     :: !recv0 && !recv1 && !recv2 ->…  /*frame loss*/

     ::  else -> skip;

   fi;

   if

     :: recv0 == true; /*receive a frame from BA_0*/

        if

       ::  true -> …/*change the frame*/

       ::  true -> …  /*frame loss*/

       ::  true -> skip;

        fi;

        …  /*broadcast the frame*/

   fi;

  …

}