Program: 92523
Project: 92523
Buggy source:
@SuppressWarnings({"String_Node_Str","String_Node_Str"}) @Override public Object execute(ExecutionEvent event) throws ExecutionException {
  IWorkbenchWindow window=PlatformUI.getWorkbench().getActiveWorkbenchWindow();
  if (window == null)   return false;
  try {
    IFile bookmarksFile=fExperiment.getProject().getExperimentsFolder().getResource().getFile(BOOKMARKS_HIDDEN_FILE);
    if (!bookmarksFile.exists()) {
      InputStream source=new ByteArrayInputStream(new byte[0]);
      bookmarksFile.create(source,true,null);
    }
    bookmarksFile.setHidden(true);
    IFile file=fExperiment.getResource().getFile(fExperiment.getName() + '_');
    if (!file.exists()) {
      file.createLink(bookmarksFile.getLocation(),IResource.REPLACE,null);
    }
    file.setHidden(true);
    file.setPersistentProperty(TmfTraceElement.TRACETYPE,TmfExperiment.class.getCanonicalName());
    List<TmfTraceElement> traceEntries=fExperiment.getTraces();
    int nbTraces=traceEntries.size();
    int cacheSize=Integer.MAX_VALUE;
    boolean useEditor=true;
    String experimentEditorId=null;
    ITmfTrace<?>[] traces=new ITmfTrace[nbTraces];
    for (int i=0; i < nbTraces; i++) {
      TmfTraceElement element=traceEntries.get(i);
      ITmfTrace trace=element.instantiateTrace();
      TmfEvent traceEvent=element.instantiateEvent();
      if (trace == null || traceEvent == null) {
        displayErrorMsg(Messages.OpenExperimentHandler_NoTraceType);
        for (int j=0; j < i; j++) {
          traces[j].dispose();
        }
        return null;
      }
      try {
        trace.initTrace(fExperiment.getName(),element.getLocation().getPath(),traceEvent.getClass(),false);
      }
 catch (      FileNotFoundException e) {
        displayErrorMsg("String_Node_Str");
      }
      trace.setResource(element.getResource());
      cacheSize=Math.min(cacheSize,trace.getCacheSize());
      String editorId=element.getEditorId();
      if (editorId == null) {
        useEditor=false;
        experimentEditorId=null;
      }
 else       if (useEditor) {
        if (experimentEditorId == null) {
          experimentEditorId=editorId;
        }
 else         if (!editorId.equals(experimentEditorId)) {
          useEditor=false;
        }
      }
      traces[i]=trace;
    }
    TmfExperiment experiment=new TmfExperiment(TmfEvent.class,fExperiment.getName(),traces,cacheSize);
    experiment.setBookmarksFile(file);
    if (useEditor) {
      IEditorInput editorInput=new TmfEditorInput(file,experiment);
      IWorkbench wb=PlatformUI.getWorkbench();
      IWorkbenchPage activePage=wb.getActiveWorkbenchWindow().getActivePage();
      String editorId=TmfEventsEditor.ID;
      IEditorPart editor=activePage.findEditor(new FileEditorInput(file));
      if (editor != null && editor instanceof IReusableEditor) {
        activePage.reuseEditor((IReusableEditor)editor,editorInput);
        activePage.activate(editor);
      }
 else {
        activePage.openEditor(editorInput,editorId);
      }
      experiment.initTrace(null,null,null,true);
      IDE.setDefaultEditor(file,editorId);
    }
 else {
      TmfExperiment.setCurrentExperiment(experiment);
      TmfSignalManager.dispatchSignal(new TmfExperimentSelectedSignal(this,experiment));
      IDE.setDefaultEditor(file,EventsViewEditor.ID);
    }
  }
 catch (  CoreException e) {
    displayErrorMsg(e.getMessage());
  }
  return null;
}

Fixed version (ground truth):
@SuppressWarnings({"String_Node_Str","String_Node_Str"}) @Override public Object execute(ExecutionEvent event) throws ExecutionException {
  IWorkbenchWindow window=PlatformUI.getWorkbench().getActiveWorkbenchWindow();
  if (window == null)   return false;
  try {
    IFile bookmarksFile=fExperiment.getProject().getExperimentsFolder().getResource().getFile(BOOKMARKS_HIDDEN_FILE);
    if (!bookmarksFile.exists()) {
      InputStream source=new ByteArrayInputStream(new byte[0]);
      bookmarksFile.create(source,true,null);
    }
    bookmarksFile.setHidden(true);
    IFile file=fExperiment.getResource().getFile(fExperiment.getName() + '_');
    if (!file.exists()) {
      file.createLink(bookmarksFile.getLocation(),IResource.REPLACE,null);
    }
    file.setHidden(true);
    file.setPersistentProperty(TmfTraceElement.TRACETYPE,TmfExperiment.class.getCanonicalName());
    List<TmfTraceElement> traceEntries=fExperiment.getTraces();
    int nbTraces=traceEntries.size();
    int cacheSize=Integer.MAX_VALUE;
    boolean useEditor=true;
    String experimentEditorId=null;
    ITmfTrace<?>[] traces=new ITmfTrace[nbTraces];
    for (int i=0; i < nbTraces; i++) {
      TmfTraceElement element=traceEntries.get(i);
      ITmfTrace trace=element.instantiateTrace();
      TmfEvent traceEvent=element.instantiateEvent();
      if (trace == null || traceEvent == null) {
        displayErrorMsg(Messages.OpenExperimentHandler_NoTraceType);
        for (int j=0; j < i; j++) {
          traces[j].dispose();
        }
        return null;
      }
      try {
        trace.initTrace(element.getName(),element.getLocation().getPath(),traceEvent.getClass(),false);
      }
 catch (      FileNotFoundException e) {
        displayErrorMsg("String_Node_Str");
      }
      trace.setResource(element.getResource());
      cacheSize=Math.min(cacheSize,trace.getCacheSize());
      String editorId=element.getEditorId();
      if (editorId == null) {
        useEditor=false;
        experimentEditorId=null;
      }
 else       if (useEditor) {
        if (experimentEditorId == null) {
          experimentEditorId=editorId;
        }
 else         if (!editorId.equals(experimentEditorId)) {
          useEditor=false;
        }
      }
      traces[i]=trace;
    }
    TmfExperiment experiment=new TmfExperiment(TmfEvent.class,fExperiment.getName(),traces,cacheSize);
    experiment.setBookmarksFile(file);
    if (useEditor) {
      IEditorInput editorInput=new TmfEditorInput(file,experiment);
      IWorkbench wb=PlatformUI.getWorkbench();
      IWorkbenchPage activePage=wb.getActiveWorkbenchWindow().getActivePage();
      String editorId=TmfEventsEditor.ID;
      IEditorPart editor=activePage.findEditor(new FileEditorInput(file));
      if (editor != null && editor instanceof IReusableEditor) {
        activePage.reuseEditor((IReusableEditor)editor,editorInput);
        activePage.activate(editor);
      }
 else {
        activePage.openEditor(editorInput,editorId);
      }
      experiment.initTrace(null,null,null,true);
      IDE.setDefaultEditor(file,editorId);
    }
 else {
      TmfExperiment.setCurrentExperiment(experiment);
      TmfSignalManager.dispatchSignal(new TmfExperimentSelectedSignal(this,experiment));
      IDE.setDefaultEditor(file,EventsViewEditor.ID);
    }
  }
 catch (  CoreException e) {
    displayErrorMsg(e.getMessage());
  }
  return null;
}