Program: 16622
Project: 16622
Buggy source:
public void render(Component comp,Writer out) throws IOException {
  final Groupbox self=(Groupbox)comp;
  final Caption caption=self.getCaption();
  final String uuid=self.getUuid();
  final Execution exec=Executions.getCurrent();
  out.write("String_Node_Str");
  out.write(uuid);
  out.write("String_Node_Str");
  out.write(self.getOuterAttrs());
  out.write(self.getInnerAttrs());
  out.write("String_Node_Str");
  if (caption != null) {
    out.write("String_Node_Str");
    out.write("String_Node_Str");
    out.write("String_Node_Str");
    out.write("String_Node_Str");
    out.write("String_Node_Str");
    out.write("String_Node_Str");
    out.write("String_Node_Str");
    caption.redraw(out);
    out.write("String_Node_Str");
    out.write("String_Node_Str");
    out.write("String_Node_Str");
    out.write("String_Node_Str");
    out.write("String_Node_Str");
  }
  String gcExtStyle="String_Node_Str";
  if (caption != null) {
    gcExtStyle+="String_Node_Str";
  }
  gcExtStyle+=self.getContentStyle();
  out.write("String_Node_Str");
  out.write(uuid);
  out.write("String_Node_Str");
  if (self.isOpen()) {
  }
 else {
    out.write("String_Node_Str");
  }
  out.write("String_Node_Str");
  out.write("String_Node_Str");
  out.write(uuid);
  out.write("String_Node_Str");
  out.write("String_Node_Str");
  out.write(self.getContentSclass());
  out.write("String_Node_Str");
  if (gcExtStyle.length() > 0) {
    out.write("String_Node_Str");
    out.write(gcExtStyle);
    out.write('"');
  }
  out.write("String_Node_Str");
  for (Iterator it=self.getChildren().iterator(); it.hasNext(); ) {
    final Component child=(Component)it.next();
    if (child != caption)     child.redraw(out);
  }
  out.write("String_Node_Str");
  out.write("String_Node_Str");
  out.write(self.getUuid());
  out.write("String_Node_Str");
  out.write("String_Node_Str");
  out.write("String_Node_Str");
  out.write("String_Node_Str");
  out.write(exec.encodeURL("String_Node_Str"));
  out.write("String_Node_Str");
  out.write("String_Node_Str");
  out.write("String_Node_Str");
  out.write("String_Node_Str");
}

Fixed version (ground truth):
public void render(Component comp,Writer out) throws IOException {
  final Groupbox self=(Groupbox)comp;
  final Caption caption=self.getCaption();
  final String uuid=self.getUuid();
  final Execution exec=Executions.getCurrent();
  out.write("String_Node_Str");
  out.write(uuid);
  out.write("String_Node_Str");
  out.write(self.getOuterAttrs());
  out.write(self.getInnerAttrs());
  out.write("String_Node_Str");
  if (caption != null) {
    out.write("String_Node_Str");
    out.write("String_Node_Str");
    out.write("String_Node_Str");
    out.write("String_Node_Str");
    out.write("String_Node_Str");
    out.write("String_Node_Str");
    out.write("String_Node_Str");
    caption.redraw(out);
    out.write("String_Node_Str");
    out.write("String_Node_Str");
    out.write("String_Node_Str");
    out.write("String_Node_Str");
    out.write("String_Node_Str");
  }
  String gcExtStyle="String_Node_Str";
  if (caption != null) {
    gcExtStyle+="String_Node_Str";
  }
  final String cs=self.getContentStyle();
  if (cs != null) {
    gcExtStyle+=cs;
  }
  out.write("String_Node_Str");
  out.write(uuid);
  out.write("String_Node_Str");
  if (self.isOpen()) {
  }
 else {
    out.write("String_Node_Str");
  }
  out.write("String_Node_Str");
  out.write("String_Node_Str");
  out.write(uuid);
  out.write("String_Node_Str");
  out.write("String_Node_Str");
  out.write(self.getContentSclass());
  out.write("String_Node_Str");
  if (gcExtStyle.length() > 0) {
    out.write("String_Node_Str");
    out.write(gcExtStyle);
    out.write('"');
  }
  out.write("String_Node_Str");
  for (Iterator it=self.getChildren().iterator(); it.hasNext(); ) {
    final Component child=(Component)it.next();
    if (child != caption)     child.redraw(out);
  }
  out.write("String_Node_Str");
  out.write("String_Node_Str");
  out.write(self.getUuid());
  out.write("String_Node_Str");
  out.write("String_Node_Str");
  out.write("String_Node_Str");
  out.write("String_Node_Str");
  out.write(exec.encodeURL("String_Node_Str"));
  out.write("String_Node_Str");
  out.write("String_Node_Str");
  out.write("String_Node_Str");
  out.write("String_Node_Str");
}