Program: 37834
Project: 37834
Buggy source:
public OFPacketOut generateVerificationPacket(IOFSwitch srcSw,OFPort port,IOFSwitch dstSw,boolean sign){
  try {
    OFPortDesc ofPortDesc=srcSw.getPort(port);
    byte[] chassisId=new byte[]{4,0,0,0,0,0,0};
    byte[] portId=new byte[]{2,0,0};
    byte[] ttlValue=new byte[]{0,0x78};
    byte[] dpidTLVValue=new byte[]{0x0,0x26,(byte)0xe1,0,0,0,0,0,0,0,0,0};
    LLDPTLV dpidTLV=new LLDPTLV().setType((byte)127).setLength((short)dpidTLVValue.length).setValue(dpidTLVValue);
    byte[] dpidArray=new byte[8];
    ByteBuffer dpidBB=ByteBuffer.wrap(dpidArray);
    ByteBuffer portBB=ByteBuffer.wrap(portId,1,2);
    DatapathId dpid=srcSw.getId();
    dpidBB.putLong(dpid.getLong());
    System.arraycopy(dpidArray,2,chassisId,1,6);
    System.arraycopy(dpidArray,0,dpidTLVValue,4,8);
    byte[] srcMac=ofPortDesc.getHwAddr().getBytes();
    byte[] zeroMac={0,0,0,0,0,0};
    if (Arrays.equals(srcMac,zeroMac)) {
      logger.warn("String_Node_Str",dpid.toString(),ofPortDesc.getPortNo().getPortNumber());
      System.arraycopy(dpidArray,2,srcMac,0,6);
    }
    portBB.putShort(port.getShortPortNumber());
    VerificationPacket vp=new VerificationPacket();
    vp.setChassisId(new LLDPTLV().setType((byte)1).setLength((short)chassisId.length).setValue(chassisId));
    vp.setPortId(new LLDPTLV().setType((byte)2).setLength((short)portId.length).setValue(portId));
    vp.setTtl(new LLDPTLV().setType((byte)3).setLength((short)ttlValue.length).setValue(ttlValue));
    vp.getOptionalTLVList().add(dpidTLV);
    long time=System.currentTimeMillis();
    long swLatency=srcSw.getLatency().getValue();
    byte[] timestampTLVValue=ByteBuffer.allocate(Long.SIZE / 8 + 4).put((byte)0x00).put((byte)0x26).put((byte)0xe1).put((byte)0x01).putLong(time + swLatency).array();
    LLDPTLV timestampTLV=new LLDPTLV().setType((byte)127).setLength((short)timestampTLVValue.length).setValue(timestampTLVValue);
    vp.getOptionalTLVList().add(timestampTLV);
    byte[] typeTLVValue=ByteBuffer.allocate(Integer.SIZE / 8 + 4).put((byte)0x00).put((byte)0x26).put((byte)0xe1).put((byte)0x02).putInt(PathType.ISL.ordinal()).array();
    LLDPTLV typeTLV=new LLDPTLV().setType((byte)127).setLength((short)typeTLVValue.length).setValue(typeTLVValue);
    vp.getOptionalTLVList().add(typeTLV);
    if (sign) {
      String token=JWT.create().withClaim("String_Node_Str",dpid.getLong()).withClaim("String_Node_Str",time + swLatency).sign(algorithm);
      byte[] tokenBytes=token.getBytes(Charset.forName("String_Node_Str"));
      byte[] tokenTLVValue=ByteBuffer.allocate(4 + tokenBytes.length).put((byte)0x00).put((byte)0x26).put((byte)0xe1).put((byte)0x03).put(tokenBytes).array();
      LLDPTLV tokenTLV=new LLDPTLV().setType((byte)127).setLength((short)tokenTLVValue.length).setValue(tokenTLVValue);
      vp.getOptionalTLVList().add(tokenTLV);
    }
    MacAddress dstMac=MacAddress.of(VERIFICATION_BCAST_PACKET_DST);
    if (dstSw != null) {
      OFPortDesc sw2OfPortDesc=dstSw.getPort(port);
      dstMac=sw2OfPortDesc.getHwAddr();
    }
    Ethernet l2=new Ethernet().setSourceMACAddress(MacAddress.of(srcMac)).setDestinationMACAddress(dstMac).setEtherType(EthType.IPv4);
    IPv4Address dstIp=IPv4Address.of(VERIFICATION_PACKET_IP_DST);
    if (dstSw != null) {
      dstIp=IPv4Address.of(((InetSocketAddress)dstSw.getInetAddress()).getAddress().getAddress());
    }
    IPv4 l3=new IPv4().setSourceAddress(IPv4Address.of(((InetSocketAddress)srcSw.getInetAddress()).getAddress().getAddress())).setDestinationAddress(dstIp).setTtl((byte)64).setProtocol(IpProtocol.UDP);
    UDP l4=new UDP();
    l4.setSourcePort(TransportPort.of(VERIFICATION_PACKET_UDP_PORT));
    l4.setDestinationPort(TransportPort.of(VERIFICATION_PACKET_UDP_PORT));
    l2.setPayload(l3);
    l3.setPayload(l4);
    l4.setPayload(vp);
    byte[] data=l2.serialize();
    OFPacketOut.Builder pob=srcSw.getOFFactory().buildPacketOut().setBufferId(OFBufferId.NO_BUFFER).setActions(getDiscoveryActions(srcSw,port)).setData(data);
    OFMessageUtils.setInPort(pob,OFPort.CONTROLLER);
    return pob.build();
  }
 catch (  Exception exception) {
    logger.error("String_Node_Str",exception);
  }
  return null;
}

Fixed version (ground truth):
public OFPacketOut generateVerificationPacket(IOFSwitch srcSw,OFPort port,IOFSwitch dstSw,boolean sign){
  try {
    OFPortDesc ofPortDesc=srcSw.getPort(port);
    byte[] chassisId=new byte[]{4,0,0,0,0,0,0};
    byte[] portId=new byte[]{2,0,0};
    byte[] ttlValue=new byte[]{0,0x78};
    byte[] dpidTLVValue=new byte[]{0x0,0x26,(byte)0xe1,0,0,0,0,0,0,0,0,0};
    LLDPTLV dpidTLV=new LLDPTLV().setType((byte)127).setLength((short)dpidTLVValue.length).setValue(dpidTLVValue);
    byte[] dpidArray=new byte[8];
    ByteBuffer dpidBB=ByteBuffer.wrap(dpidArray);
    ByteBuffer portBB=ByteBuffer.wrap(portId,1,2);
    DatapathId dpid=srcSw.getId();
    dpidBB.putLong(dpid.getLong());
    System.arraycopy(dpidArray,2,chassisId,1,6);
    System.arraycopy(dpidArray,0,dpidTLVValue,4,8);
    byte[] zeroMac={0,0,0,0,0,0};
    byte[] srcMac=ofPortDesc.getHwAddr().getBytes();
    if (Arrays.equals(srcMac,zeroMac)) {
      int portVal=ofPortDesc.getPortNo().getPortNumber();
      logger.warn("String_Node_Str",dpid.toString(),portVal);
      System.arraycopy(dpidArray,2,srcMac,0,6);
    }
    portBB.putShort(port.getShortPortNumber());
    VerificationPacket vp=new VerificationPacket();
    vp.setChassisId(new LLDPTLV().setType((byte)1).setLength((short)chassisId.length).setValue(chassisId));
    vp.setPortId(new LLDPTLV().setType((byte)2).setLength((short)portId.length).setValue(portId));
    vp.setTtl(new LLDPTLV().setType((byte)3).setLength((short)ttlValue.length).setValue(ttlValue));
    vp.getOptionalTLVList().add(dpidTLV);
    long time=System.currentTimeMillis();
    long swLatency=srcSw.getLatency().getValue();
    byte[] timestampTLVValue=ByteBuffer.allocate(Long.SIZE / 8 + 4).put((byte)0x00).put((byte)0x26).put((byte)0xe1).put((byte)0x01).putLong(time + swLatency).array();
    LLDPTLV timestampTLV=new LLDPTLV().setType((byte)127).setLength((short)timestampTLVValue.length).setValue(timestampTLVValue);
    vp.getOptionalTLVList().add(timestampTLV);
    byte[] typeTLVValue=ByteBuffer.allocate(Integer.SIZE / 8 + 4).put((byte)0x00).put((byte)0x26).put((byte)0xe1).put((byte)0x02).putInt(PathType.ISL.ordinal()).array();
    LLDPTLV typeTLV=new LLDPTLV().setType((byte)127).setLength((short)typeTLVValue.length).setValue(typeTLVValue);
    vp.getOptionalTLVList().add(typeTLV);
    if (sign) {
      String token=JWT.create().withClaim("String_Node_Str",dpid.getLong()).withClaim("String_Node_Str",time + swLatency).sign(algorithm);
      byte[] tokenBytes=token.getBytes(Charset.forName("String_Node_Str"));
      byte[] tokenTLVValue=ByteBuffer.allocate(4 + tokenBytes.length).put((byte)0x00).put((byte)0x26).put((byte)0xe1).put((byte)0x03).put(tokenBytes).array();
      LLDPTLV tokenTLV=new LLDPTLV().setType((byte)127).setLength((short)tokenTLVValue.length).setValue(tokenTLVValue);
      vp.getOptionalTLVList().add(tokenTLV);
    }
    MacAddress dstMac=MacAddress.of(VERIFICATION_BCAST_PACKET_DST);
    if (dstSw != null) {
      OFPortDesc sw2OfPortDesc=dstSw.getPort(port);
      dstMac=sw2OfPortDesc.getHwAddr();
    }
    Ethernet l2=new Ethernet().setSourceMACAddress(MacAddress.of(srcMac)).setDestinationMACAddress(dstMac).setEtherType(EthType.IPv4);
    IPv4Address dstIp=IPv4Address.of(VERIFICATION_PACKET_IP_DST);
    if (dstSw != null) {
      dstIp=IPv4Address.of(((InetSocketAddress)dstSw.getInetAddress()).getAddress().getAddress());
    }
    IPv4 l3=new IPv4().setSourceAddress(IPv4Address.of(((InetSocketAddress)srcSw.getInetAddress()).getAddress().getAddress())).setDestinationAddress(dstIp).setTtl((byte)64).setProtocol(IpProtocol.UDP);
    UDP l4=new UDP();
    l4.setSourcePort(TransportPort.of(VERIFICATION_PACKET_UDP_PORT));
    l4.setDestinationPort(TransportPort.of(VERIFICATION_PACKET_UDP_PORT));
    l2.setPayload(l3);
    l3.setPayload(l4);
    l4.setPayload(vp);
    byte[] data=l2.serialize();
    OFPacketOut.Builder pob=srcSw.getOFFactory().buildPacketOut().setBufferId(OFBufferId.NO_BUFFER).setActions(getDiscoveryActions(srcSw,port)).setData(data);
    OFMessageUtils.setInPort(pob,OFPort.CONTROLLER);
    return pob.build();
  }
 catch (  Exception exception) {
    logger.error("String_Node_Str",exception);
  }
  return null;
}