private void createDOTFile(String classname, Collection v) throws java.io.IOException {
java.io.PrintWriter output;
File dotfile_flagstates= new File("markedgraph_"+classname+".dot");
- FileOutputStream dotstream=new FileOutputStream(dotfile_flagstates,true);
+ FileOutputStream dotstream=new FileOutputStream(dotfile_flagstates,false);
output = new java.io.PrintWriter(dotstream, true);
output.println("digraph dotvisitor {");
output.println("\tnode [fontsize=10,height=\"0.1\", width=\"0.1\"];");