Program: 42775
Project: 42775
Buggy source:
/** 
 * {@inheritDoc}
 */
@Override public int peel(byte[] buffer,int start,int bytesAvailable){
  if (bytesAvailable < 80) {
    return 0;
  }
  String str=Arrays.toString(buffer).substring(start,bytesAvailable);
  if (buffer[start] != '$') {
    return 1;
  }
  if (buffer[start + 1] != 'G') {
    return 1;
  }
  if (buffer[start + 2] != 'P') {
    return 1;
  }
  if (buffer[start + 3] != 'G') {
    return 1;
  }
  if (buffer[start + 4] != 'G') {
    return 1;
  }
  if (buffer[start + 5] != 'A') {
    return 1;
  }
  String[] ar=str.split("String_Node_Str");
  if (!ar[0].equals("String_Node_Str")) {
    System.out.println("String_Node_Str");
    throw new RuntimeException();
  }
  int quality=Integer.parseInt(ar[6]);
  if (quality == 0) {
    setNodeState(NodeState.ERROR);
    return 1;
  }
  Date readingTime=convertHHMMSStoTime(ar[1]);
  double latitude=convertMinutesSecondsToFloat(ar[2]);
  boolean north;
switch (ar[3]) {
case "String_Node_Str":
    north=true;
  break;
case "String_Node_Str":
north=false;
break;
default :
System.out.println("String_Node_Str");
throw new RuntimeException();
}
double longitude=convertMinSecToFloatLongitude(ar[4]);
boolean west;
switch (ar[5]) {
case "String_Node_Str":
west=true;
break;
case "String_Node_Str":
west=false;
break;
default :
System.out.println("String_Node_Str");
throw new RuntimeException();
}
int numSatellites=Integer.parseInt(ar[7]);
double horizontalDilutionOfPrecision=Double.parseDouble(ar[8]);
double antennaAltitude=Double.parseDouble(ar[9]);
msgPub.publish(new GpsMeasurement(readingTime,latitude,north,longitude,west,quality,numSatellites,horizontalDilutionOfPrecision,antennaAltitude,Double.parseDouble(ar[2]),Double.parseDouble(ar[4])));
setNodeState(NodeState.ON);
return ar[0].length() + ar[1].length() + ar[2].length()+ ar[3].length()+ ar[4].length()+ ar[5].length()+ ar[6].length()+ ar[7].length()+ ar[8].length()+ ar[9].length();
}

Fixed version (ground truth):
/** 
 * {@inheritDoc}
 */
@Override public int peel(byte[] buffer,int start,int bytesAvailable){
  if (bytesAvailable < 80) {
    return 0;
  }
  String str;
  try {
    str=new String(buffer,start,bytesAvailable,"String_Node_Str");
  }
 catch (  UnsupportedEncodingException e) {
    return 0;
  }
  if (buffer[start] != '$') {
    return 1;
  }
  if (buffer[start + 1] != 'G') {
    return 1;
  }
  if (buffer[start + 2] != 'P') {
    return 1;
  }
  if (buffer[start + 3] != 'G') {
    return 1;
  }
  if (buffer[start + 4] != 'G') {
    return 1;
  }
  if (buffer[start + 5] != 'A') {
    return 1;
  }
  String[] ar=str.split("String_Node_Str");
  if (!ar[0].equals("String_Node_Str")) {
    System.out.println("String_Node_Str");
    throw new RuntimeException();
  }
  int quality=Integer.parseInt(ar[6]);
  if (quality == 0) {
    setNodeState(NodeState.ERROR);
    return 1;
  }
  Date readingTime=convertHHMMSStoTime(ar[1]);
  double latitude=convertMinutesSecondsToFloat(ar[2]);
  boolean north;
switch (ar[3]) {
case "String_Node_Str":
    north=true;
  break;
case "String_Node_Str":
north=false;
break;
default :
System.out.println("String_Node_Str");
throw new RuntimeException();
}
double longitude=convertMinSecToFloatLongitude(ar[4]);
boolean west;
switch (ar[5]) {
case "String_Node_Str":
west=true;
break;
case "String_Node_Str":
west=false;
break;
default :
System.out.println("String_Node_Str");
throw new RuntimeException();
}
int numSatellites=Integer.parseInt(ar[7]);
double horizontalDilutionOfPrecision=Double.parseDouble(ar[8]);
double antennaAltitude=Double.parseDouble(ar[9]);
msgPub.publish(new GpsMeasurement(readingTime,latitude,north,longitude,west,quality,numSatellites,horizontalDilutionOfPrecision,antennaAltitude,Double.parseDouble(ar[2]),Double.parseDouble(ar[4])));
setNodeState(NodeState.ON);
return ar[0].length() + ar[1].length() + ar[2].length()+ ar[3].length()+ ar[4].length()+ ar[5].length()+ ar[6].length()+ ar[7].length()+ ar[8].length()+ ar[9].length();
}