Program: 63219
Project: 63219
Buggy source:
public List<CubeSegment> mergeSegments(CubeInstance cubeInstance,final long startDate,final long endDate) throws IOException, CubeIntegrityException {
  if (cubeInstance.getBuildingSegments().size() > 0) {
    throw new RuntimeException("String_Node_Str");
  }
  List<CubeSegment> segments=new ArrayList<CubeSegment>();
  if (null != cubeInstance.getDescriptor().getCubePartitionDesc().getPartitionDateColumn()) {
    List<CubeSegment> readySegments=cubeInstance.getSegment(SegmentStatusEnum.READY);
    if (readySegments.isEmpty()) {
      throw new CubeIntegrityException("String_Node_Str");
    }
    long start=Long.MIN_VALUE;
    long end=Long.MAX_VALUE;
    for (    CubeSegment readySegment : readySegments) {
      if (hasOverlap(startDate,endDate,readySegment.getDateRangeStart(),readySegment.getDateRangeEnd())) {
        if (start > readySegment.getDateRangeStart()) {
          start=readySegment.getDateRangeStart();
        }
        if (end < readySegment.getDateRangeEnd()) {
          end=readySegment.getDateRangeEnd();
        }
      }
    }
    segments.add(buildSegment(cubeInstance,start,end));
  }
 else {
    throw new CubeIntegrityException("String_Node_Str");
  }
  validateNewSegments(cubeInstance,RealizationBuildTypeEnum.MERGE,segments);
  CubeSegment newSeg=segments.get(0);
  List<CubeSegment> mergingSegments=cubeInstance.getMergingSegments(newSeg);
  this.makeDictForNewSegment(cubeInstance,newSeg,mergingSegments);
  this.makeSnapshotForNewSegment(cubeInstance,newSeg,mergingSegments);
  cubeInstance.getSegments().addAll(segments);
  Collections.sort(cubeInstance.getSegments());
  this.updateCube(cubeInstance);
  return segments;
}

Fixed version (ground truth):
public List<CubeSegment> mergeSegments(CubeInstance cubeInstance,final long startDate,final long endDate) throws IOException, CubeIntegrityException {
  if (cubeInstance.getBuildingSegments().size() > 0) {
    throw new RuntimeException("String_Node_Str");
  }
  List<CubeSegment> segments=new ArrayList<CubeSegment>();
  if (null != cubeInstance.getDescriptor().getCubePartitionDesc().getPartitionDateColumn()) {
    List<CubeSegment> readySegments=cubeInstance.getSegment(SegmentStatusEnum.READY);
    if (readySegments.isEmpty()) {
      throw new CubeIntegrityException("String_Node_Str");
    }
    long start=Long.MAX_VALUE;
    long end=Long.MIN_VALUE;
    for (    CubeSegment readySegment : readySegments) {
      if (hasOverlap(startDate,endDate,readySegment.getDateRangeStart(),readySegment.getDateRangeEnd())) {
        if (start > readySegment.getDateRangeStart()) {
          start=readySegment.getDateRangeStart();
        }
        if (end < readySegment.getDateRangeEnd()) {
          end=readySegment.getDateRangeEnd();
        }
      }
    }
    segments.add(buildSegment(cubeInstance,start,end));
  }
 else {
    throw new CubeIntegrityException("String_Node_Str");
  }
  validateNewSegments(cubeInstance,RealizationBuildTypeEnum.MERGE,segments);
  CubeSegment newSeg=segments.get(0);
  List<CubeSegment> mergingSegments=cubeInstance.getMergingSegments(newSeg);
  this.makeDictForNewSegment(cubeInstance,newSeg,mergingSegments);
  this.makeSnapshotForNewSegment(cubeInstance,newSeg,mergingSegments);
  cubeInstance.getSegments().addAll(segments);
  Collections.sort(cubeInstance.getSegments());
  this.updateCube(cubeInstance);
  return segments;
}