Research Article

Efficient Semantics-Based Compliance Checking Using LTL Formulae and Unfolding

Algorithm 13

Determining the Precedes relationship in the bigraph of a conflict-free annotated CFP.
Function  Precedes
Input: A bigraph , a node , a event node , a set of nodes (the set of visited nodes)
Output: A boolean value
Begin
if     then
  return FALSE;
else
  if     then
   return TRUE;
  else
   if     then
    return FALSE;
   else
    return