lib/cpee/processtransformation/structures.rb in cpee-1.3.146 vs lib/cpee/processtransformation/structures.rb in cpee-1.3.147

@@ -368,11 +368,12 @@
             loops.each do |l|
               maxcut.upto(l.length) do |i|
                 maxcut = i if t[0...i] == l[0...i]
               end
             end
-            loops << self[i].shift(maxcut)
+            cutted = self[i].shift(maxcut)
+            loops << cutted if cutted.length > 1 ### if only the loop node is left, no need to attach
           end
         end
 
         def extend
           # find largest common
@@ -399,10 +400,10 @@
                 end 
               end
             end  
           end
 
-          max.incoming = self.length
+          max.incoming = self.length + 1
           max
         end
 
         def segment_by_loops(loops)
           # supress loops