Program: 8226
Project: 8226
Buggy source:
@NonNull private ImportKeyResult multiThreadedKeyImport(ArrayList<ParcelableKeyRing> keyList,final ParcelableHkpKeyserver keyServer,final ParcelableProxy proxy,final boolean skipSave){
  Log.d(Constants.TAG,"String_Node_Str");
  final Iterator<ParcelableKeyRing> keyListIterator=keyList.iterator();
  final int totKeys=keyList.size();
  ExecutorService importExecutor=new ThreadPoolExecutor(0,MAX_THREADS,30L,TimeUnit.SECONDS,new LinkedBlockingQueue<Runnable>());
  ExecutorCompletionService<ImportKeyResult> importCompletionService=new ExecutorCompletionService<>(importExecutor);
  while (keyListIterator.hasNext()) {
    Callable<ImportKeyResult> importOperationCallable=new Callable<ImportKeyResult>(){
      @Override public ImportKeyResult call(){
        if (checkCancelled()) {
          return null;
        }
        ArrayList<ParcelableKeyRing> list=new ArrayList<>();
        list.add(keyListIterator.next());
        ProgressScaler ignoreProgressable=new ProgressScaler();
        return serialKeyRingImport(list.iterator(),1,keyServer,ignoreProgressable,proxy,skipSave);
      }
    }
;
    importCompletionService.submit(importOperationCallable);
  }
  KeyImportAccumulator accumulator=new KeyImportAccumulator(totKeys,mProgressable);
  while (!accumulator.isImportFinished()) {
    try {
      accumulator.accumulateKeyImport(importCompletionService.take().get());
    }
 catch (    InterruptedException|ExecutionException e) {
      Log.e(Constants.TAG,"String_Node_Str" + "String_Node_Str",e);
      if (e instanceof ExecutionException) {
        throw new RuntimeException();
      }
    }
  }
  return accumulator.getConsolidatedResult();
}

Fixed version (ground truth):
@NonNull private ImportKeyResult multiThreadedKeyImport(ArrayList<ParcelableKeyRing> keyList,final ParcelableHkpKeyserver keyServer,final ParcelableProxy proxy,final boolean skipSave){
  Log.d(Constants.TAG,"String_Node_Str");
  final Iterator<ParcelableKeyRing> keyListIterator=keyList.iterator();
  final int totKeys=keyList.size();
  ExecutorService importExecutor=new ThreadPoolExecutor(0,MAX_THREADS,30L,TimeUnit.SECONDS,new LinkedBlockingQueue<Runnable>());
  ExecutorCompletionService<ImportKeyResult> importCompletionService=new ExecutorCompletionService<>(importExecutor);
  while (keyListIterator.hasNext()) {
    final ParcelableKeyRing pkRing=keyListIterator.next();
    Callable<ImportKeyResult> importOperationCallable=new Callable<ImportKeyResult>(){
      @Override public ImportKeyResult call(){
        if (checkCancelled()) {
          return null;
        }
        ArrayList<ParcelableKeyRing> list=new ArrayList<>();
        list.add(pkRing);
        ProgressScaler ignoreProgressable=new ProgressScaler();
        return serialKeyRingImport(list.iterator(),1,keyServer,ignoreProgressable,proxy,skipSave);
      }
    }
;
    importCompletionService.submit(importOperationCallable);
  }
  KeyImportAccumulator accumulator=new KeyImportAccumulator(totKeys,mProgressable);
  while (!accumulator.isImportFinished()) {
    try {
      accumulator.accumulateKeyImport(importCompletionService.take().get());
    }
 catch (    InterruptedException|ExecutionException e) {
      Log.e(Constants.TAG,"String_Node_Str" + "String_Node_Str",e);
      if (e instanceof ExecutionException) {
        throw new RuntimeException();
      }
    }
  }
  return accumulator.getConsolidatedResult();
}