“…In accordance with Petri nets theory [10,11], these nets are viewed as a formal simulation tool characterized by graphical visualization and a well-defined semantics and syntax. A Petri net is formally defined as a directed bipartite graph represented as N =< P, T, R >, where P = p i denotes the set of graph vertices (referred to as places) and T = t i signifies the set of vertices (referred to as transitions).…”