Program: 188286
Project: 188286
Buggy source:
@Override public void aipMoved(AIP aip,String oldParentId,String newParentId){
  try {
    LOGGER.debug("String_Node_Str",aip.getId());
    List<String> topAncestors=SolrUtils.getAncestors(newParentId,model);
    SolrInputDocument aipDoc=SolrUtils.updateAIPParentId(aip.getId(),newParentId,topAncestors);
    index.add(RodaConstants.INDEX_AIP,aipDoc);
    updateRepresentationAndFileAncestors(aip,topAncestors);
    LOGGER.debug("String_Node_Str",aip.getId());
    Filter filter=new Filter(new SimpleFilterParameter(RodaConstants.AIP_ANCESTORS,aip.getId()),new SimpleFilterParameter(RodaConstants.AIP_GHOST,Boolean.FALSE.toString()));
    List<String> aipFields=Arrays.asList(RodaConstants.INDEX_UUID,RodaConstants.AIP_PARENT_ID,RodaConstants.AIP_HAS_REPRESENTATIONS);
    SolrUtils.execute(index,IndexedAIP.class,filter,aipFields,new IndexRunnable<IndexedAIP>(){
      @Override public void run(      IndexedAIP item) throws RequestNotValidException, GenericException, AuthorizationDeniedException {
        SolrInputDocument descendantDoc;
        try {
          LOGGER.debug("String_Node_Str",aip.getId(),item.getId());
          AIP aip=model.retrieveAIP(item.getId());
          List<String> ancestors=SolrUtils.getAncestors(item.getParentID(),model);
          descendantDoc=SolrUtils.updateAIPAncestors(item.getId(),ancestors);
          index.add(RodaConstants.INDEX_AIP,descendantDoc);
          if (item.getHasRepresentations()) {
            updateRepresentationAndFileAncestors(aip,ancestors);
          }
        }
 catch (        SolrServerException|IOException|NotFoundException e) {
          LOGGER.error("String_Node_Str",aip.getId(),oldParentId,newParentId,e);
        }
      }
    }
,e -> LOGGER.error("String_Node_Str",e));
  }
 catch (  RequestNotValidException|GenericException|AuthorizationDeniedException|SolrServerException|IOException|NotFoundException e) {
    LOGGER.error("String_Node_Str",aip.getId(),oldParentId,newParentId,e);
  }
}

Fixed version (ground truth):
@Override public void aipMoved(AIP aip,String oldParentId,String newParentId){
  try {
    LOGGER.debug("String_Node_Str",aip.getId());
    List<String> topAncestors=SolrUtils.getAncestors(newParentId,model);
    SolrInputDocument aipDoc=SolrUtils.updateAIPParentId(aip.getId(),newParentId,topAncestors);
    index.add(RodaConstants.INDEX_AIP,aipDoc);
    updateRepresentationAndFileAncestors(aip,topAncestors);
    LOGGER.debug("String_Node_Str",aip.getId());
    Filter filter=new Filter(new SimpleFilterParameter(RodaConstants.AIP_ANCESTORS,aip.getId()),new SimpleFilterParameter(RodaConstants.AIP_GHOST,Boolean.FALSE.toString()));
    List<String> aipFields=Arrays.asList(RodaConstants.INDEX_UUID,RodaConstants.AIP_PARENT_ID,RodaConstants.AIP_HAS_REPRESENTATIONS);
    boolean justActive=false;
    boolean removeDuplicates=true;
    List<String> aipIds=new ArrayList<>();
    new IterableIndexResult<>(index,IndexedAIP.class,filter,Sorter.NONE,Facets.NONE,null,justActive,removeDuplicates,aipFields).forEach(e -> aipIds.add(e.getUUID()));
    for (    String aipId : aipIds) {
      IndexedAIP item=SolrUtils.retrieve(index,IndexedAIP.class,aipId,aipFields);
      SolrInputDocument descendantDoc;
      try {
        LOGGER.debug("String_Node_Str",aip.getId(),item.getId());
        AIP aipModel=model.retrieveAIP(item.getId());
        List<String> ancestors=SolrUtils.getAncestors(item.getParentID(),model);
        descendantDoc=SolrUtils.updateAIPAncestors(item.getId(),ancestors);
        index.add(RodaConstants.INDEX_AIP,descendantDoc);
        if (item.getHasRepresentations()) {
          updateRepresentationAndFileAncestors(aipModel,ancestors);
        }
      }
 catch (      SolrServerException|IOException|NotFoundException e) {
        LOGGER.error("String_Node_Str",aip.getId(),oldParentId,newParentId,e);
      }
    }
  }
 catch (  RequestNotValidException|GenericException|AuthorizationDeniedException|SolrServerException|IOException|NotFoundException e) {
    LOGGER.error("String_Node_Str",aip.getId(),oldParentId,newParentId,e);
  }
}