Program: 6899
Project: 6899
Buggy source:
private String generateFileSetCreateStatement(Id.DatasetInstance datasetID,Dataset dataset,Map<String,String> properties) throws IllegalArgumentException {
  String tableName=getDatasetTableName(datasetID);
  Map<String,String> tableProperties=FileSetProperties.getTableProperties(properties);
  Location baseLocation;
  Partitioning partitioning=null;
  if (dataset instanceof PartitionedFileSet) {
    partitioning=((PartitionedFileSet)dataset).getPartitioning();
    baseLocation=((PartitionedFileSet)dataset).getEmbeddedFileSet().getBaseLocation();
  }
 else {
    baseLocation=((FileSet)dataset).getBaseLocation();
  }
  CreateStatementBuilder createStatementBuilder=new CreateStatementBuilder(datasetID.getId(),tableName).setLocation(baseLocation).setPartitioning(partitioning).setTableProperties(tableProperties);
  String format=FileSetProperties.getExploreFormat(properties);
  if (format != null) {
    if ("String_Node_Str".equals(format)) {
      return createStatementBuilder.setSchema(FileSetProperties.getExploreSchema(properties)).buildWithFileFormat("String_Node_Str");
    }
 else {
      Preconditions.checkArgument("String_Node_Str".equals(format) || "String_Node_Str".equals(format) || "String_Node_Str".equals(format),"String_Node_Str");
      String schema=FileSetProperties.getExploreSchema(properties);
      Preconditions.checkNotNull(schema,"String_Node_Str");
      String delimiter=null;
      if ("String_Node_Str".equals(format)) {
        delimiter=FileSetProperties.getExploreFormatProperties(properties).get("String_Node_Str");
      }
 else       if ("String_Node_Str".equals(format)) {
        delimiter="String_Node_Str";
      }
      return createStatementBuilder.setSchema(schema).setRowFormatDelimited(delimiter,null).buildWithFileFormat("String_Node_Str");
    }
  }
 else {
    String serde=FileSetProperties.getSerDe(properties);
    String inputFormat=FileSetProperties.getExploreInputFormat(properties);
    String outputFormat=FileSetProperties.getExploreOutputFormat(properties);
    Preconditions.checkArgument(serde != null && inputFormat != null && outputFormat != null,"String_Node_Str");
    return createStatementBuilder.setRowFormatSerde(serde).buildWithFormats(inputFormat,outputFormat);
  }
}

Fixed version (ground truth):
private String generateFileSetCreateStatement(Id.DatasetInstance datasetID,Dataset dataset,Map<String,String> properties) throws IllegalArgumentException {
  String tableName=getDatasetTableName(datasetID);
  Map<String,String> tableProperties=FileSetProperties.getTableProperties(properties);
  Location baseLocation;
  Partitioning partitioning=null;
  if (dataset instanceof PartitionedFileSet) {
    partitioning=((PartitionedFileSet)dataset).getPartitioning();
    baseLocation=((PartitionedFileSet)dataset).getEmbeddedFileSet().getBaseLocation();
  }
 else {
    baseLocation=((FileSet)dataset).getBaseLocation();
  }
  CreateStatementBuilder createStatementBuilder=new CreateStatementBuilder(datasetID.getId(),tableName).setLocation(baseLocation).setPartitioning(partitioning).setTableProperties(tableProperties);
  String format=FileSetProperties.getExploreFormat(properties);
  if (format != null) {
    if ("String_Node_Str".equals(format)) {
      return createStatementBuilder.setSchema(FileSetProperties.getExploreSchema(properties)).buildWithFileFormat("String_Node_Str");
    }
    Preconditions.checkArgument("String_Node_Str".equals(format) || "String_Node_Str".equals(format),"String_Node_Str");
    String schema=FileSetProperties.getExploreSchema(properties);
    Preconditions.checkNotNull(schema,"String_Node_Str");
    String delimiter=null;
    if ("String_Node_Str".equals(format)) {
      delimiter=FileSetProperties.getExploreFormatProperties(properties).get("String_Node_Str");
    }
 else     if ("String_Node_Str".equals(format)) {
      delimiter="String_Node_Str";
    }
    return createStatementBuilder.setSchema(schema).setRowFormatDelimited(delimiter,null).buildWithFileFormat("String_Node_Str");
  }
 else {
    String serde=FileSetProperties.getSerDe(properties);
    String inputFormat=FileSetProperties.getExploreInputFormat(properties);
    String outputFormat=FileSetProperties.getExploreOutputFormat(properties);
    Preconditions.checkArgument(serde != null && inputFormat != null && outputFormat != null,"String_Node_Str");
    return createStatementBuilder.setRowFormatSerde(serde).buildWithFormats(inputFormat,outputFormat);
  }
}