Program: 88760
Project: 88760
Buggy source:
@Override public void drop(int from,int to){
  if (to > from) {
    Log.w("String_Node_Str","String_Node_Str");
    try {
      String prevID=mAdapter.getItem(from).id;
      String prevPosition=mAdapter.getItem(from).realPosition;
      String currentID=mAdapter.getItem(to).id;
      String currentPosition=mAdapter.getItem(to).realPosition;
      MainActivity.dt.updateTraitPosition(currentID,currentPosition);
      MainActivity.dt.updateTraitPosition(prevID,String.valueOf(Integer.parseInt(currentPosition) + 1));
      int newCount=2;
      for (int i=to + 1; i < mAdapter.getCount(); i++) {
        MainActivity.dt.updateTraitPosition(mAdapter.getItem(i).id,String.valueOf(Integer.parseInt(currentPosition) + newCount));
        newCount++;
      }
    }
 catch (    Exception e) {
      e.printStackTrace();
    }
  }
 else {
    Log.w("String_Node_Str","String_Node_Str");
    try {
      String prevID=mAdapter.getItem(from).id;
      String prevPosition=mAdapter.getItem(from).realPosition;
      String currentID=mAdapter.getItem(to).id;
      String currentPosition=mAdapter.getItem(to).realPosition;
      if (Integer.parseInt(currentPosition) - to >= 0) {
        Log.w("String_Node_Str","String_Node_Str");
        int newCount=Integer.parseInt(currentPosition) - to;
        for (int i=0; i < to; i++) {
          MainActivity.dt.updateTraitPosition(mAdapter.getItem(i).id,String.valueOf(newCount));
          Log.w(mAdapter.getItem(i).trait,String.valueOf(newCount));
          newCount++;
        }
        Log.w("String_Node_Str","String_Node_Str");
        MainActivity.dt.updateTraitPosition(prevID,currentPosition);
        Log.w(mAdapter.getItem(from).trait,currentPosition);
      }
 else {
        Log.w("String_Node_Str","String_Node_Str");
        for (int i=0; i < to; i++) {
          MainActivity.dt.updateTraitPosition(mAdapter.getItem(i).id,String.valueOf(i));
          Log.w(mAdapter.getItem(i).trait,String.valueOf(i));
        }
        Log.w("String_Node_Str","String_Node_Str");
        MainActivity.dt.updateTraitPosition(prevID,String.valueOf(to));
        Log.w(mAdapter.getItem(from).trait,String.valueOf(to));
        currentPosition=String.valueOf(to);
      }
      Log.w("String_Node_Str","String_Node_Str");
      int newCount=1;
      for (int i=to; i < mAdapter.getCount(); i++) {
        if (i != from) {
          MainActivity.dt.updateTraitPosition(mAdapter.getItem(i).id,String.valueOf(Integer.parseInt(currentPosition) + newCount));
          Log.w(mAdapter.getItem(i).trait,String.valueOf(Integer.parseInt(currentPosition) + newCount));
          newCount++;
        }
      }
    }
 catch (    Exception e) {
      e.printStackTrace();
    }
  }
  loadData();
}

Fixed version (ground truth):
@Override public void drop(int from,int to){
  if (to > from) {
    Log.w("String_Node_Str","String_Node_Str");
    try {
      String prevID=mAdapter.getItem(from).id;
      String prevPosition=mAdapter.getItem(from).realPosition;
      String currentID=mAdapter.getItem(to).id;
      String currentPosition=mAdapter.getItem(to).realPosition;
      MainActivity.dt.updateTraitPosition(currentID,currentPosition);
      MainActivity.dt.updateTraitPosition(prevID,String.valueOf(Integer.parseInt(currentPosition) + 1));
      int newCount=2;
      for (int i=to + 1; i < mAdapter.getCount(); i++) {
        MainActivity.dt.updateTraitPosition(mAdapter.getItem(i).id,String.valueOf(Integer.parseInt(currentPosition) + newCount));
        newCount++;
      }
      MainActivity.reloadData=true;
    }
 catch (    Exception e) {
      e.printStackTrace();
    }
  }
 else {
    Log.w("String_Node_Str","String_Node_Str");
    try {
      String prevID=mAdapter.getItem(from).id;
      String prevPosition=mAdapter.getItem(from).realPosition;
      String currentID=mAdapter.getItem(to).id;
      String currentPosition=mAdapter.getItem(to).realPosition;
      if (Integer.parseInt(currentPosition) - to >= 0) {
        Log.w("String_Node_Str","String_Node_Str");
        int newCount=Integer.parseInt(currentPosition) - to;
        for (int i=0; i < to; i++) {
          MainActivity.dt.updateTraitPosition(mAdapter.getItem(i).id,String.valueOf(newCount));
          Log.w(mAdapter.getItem(i).trait,String.valueOf(newCount));
          newCount++;
        }
        Log.w("String_Node_Str","String_Node_Str");
        MainActivity.dt.updateTraitPosition(prevID,currentPosition);
        Log.w(mAdapter.getItem(from).trait,currentPosition);
      }
 else {
        Log.w("String_Node_Str","String_Node_Str");
        for (int i=0; i < to; i++) {
          MainActivity.dt.updateTraitPosition(mAdapter.getItem(i).id,String.valueOf(i));
          Log.w(mAdapter.getItem(i).trait,String.valueOf(i));
        }
        Log.w("String_Node_Str","String_Node_Str");
        MainActivity.dt.updateTraitPosition(prevID,String.valueOf(to));
        Log.w(mAdapter.getItem(from).trait,String.valueOf(to));
        currentPosition=String.valueOf(to);
      }
      Log.w("String_Node_Str","String_Node_Str");
      int newCount=1;
      for (int i=to; i < mAdapter.getCount(); i++) {
        if (i != from) {
          MainActivity.dt.updateTraitPosition(mAdapter.getItem(i).id,String.valueOf(Integer.parseInt(currentPosition) + newCount));
          Log.w(mAdapter.getItem(i).trait,String.valueOf(Integer.parseInt(currentPosition) + newCount));
          newCount++;
        }
      }
    }
 catch (    Exception e) {
      e.printStackTrace();
    }
  }
  MainActivity.reloadData=true;
  loadData();
}