Program: 52519
Project: 52519
Buggy source:
public byte[] unwrap(byte[] in,int inOff,int inLen) throws InvalidCipherTextException {
  if (forWrapping) {
    throw new IllegalStateException("String_Node_Str");
  }
  int n=inLen / 8;
  if ((n * 8) != inLen) {
    throw new InvalidCipherTextException("String_Node_Str");
  }
  if (n == 1) {
    throw new InvalidCipherTextException("String_Node_Str");
  }
  byte[] relevantCiphertext=new byte[inLen];
  System.arraycopy(in,inOff,relevantCiphertext,0,inLen);
  byte[] decrypted=new byte[inLen];
  byte[] paddedPlaintext;
  if (n == 2) {
    engine.init(false,param);
    for (int i=0; i < relevantCiphertext.length; i+=engine.getBlockSize()) {
      engine.processBlock(relevantCiphertext,i,decrypted,i);
    }
    extractedAIV=new byte[8];
    System.arraycopy(decrypted,0,extractedAIV,0,extractedAIV.length);
    paddedPlaintext=new byte[decrypted.length - extractedAIV.length];
    System.arraycopy(decrypted,extractedAIV.length,paddedPlaintext,0,paddedPlaintext.length);
  }
 else {
    decrypted=rfc3394UnwrapNoIvCheck(in,inOff,inLen);
    paddedPlaintext=decrypted;
  }
  byte[] extractedHighOrderAIV=new byte[4];
  byte[] mliBytes=new byte[4];
  System.arraycopy(extractedAIV,0,extractedHighOrderAIV,0,extractedHighOrderAIV.length);
  System.arraycopy(extractedAIV,extractedHighOrderAIV.length,mliBytes,0,mliBytes.length);
  int mli=Pack.bigEndianToInt(mliBytes,0);
  boolean isValid=true;
  if (!Arrays.constantTimeAreEqual(extractedHighOrderAIV,preIV)) {
    isValid=false;
  }
  int upperBound=paddedPlaintext.length;
  int lowerBound=upperBound - 8;
  if (mli <= lowerBound) {
    isValid=false;
  }
  if (mli > upperBound) {
    isValid=false;
  }
  int expectedZeros=upperBound - mli;
  byte[] zeros=new byte[expectedZeros];
  byte[] pad=new byte[expectedZeros];
  System.arraycopy(paddedPlaintext,paddedPlaintext.length - expectedZeros,pad,0,expectedZeros);
  if (!Arrays.constantTimeAreEqual(pad,zeros)) {
    isValid=false;
  }
  byte[] plaintext=new byte[mli];
  System.arraycopy(paddedPlaintext,0,plaintext,0,plaintext.length);
  if (!isValid) {
    throw new InvalidCipherTextException("String_Node_Str");
  }
  return plaintext;
}

Fixed version (ground truth):
public byte[] unwrap(byte[] in,int inOff,int inLen) throws InvalidCipherTextException {
  if (forWrapping) {
    throw new IllegalStateException("String_Node_Str");
  }
  int n=inLen / 8;
  if ((n * 8) != inLen) {
    throw new InvalidCipherTextException("String_Node_Str");
  }
  if (n == 1) {
    throw new InvalidCipherTextException("String_Node_Str");
  }
  byte[] relevantCiphertext=new byte[inLen];
  System.arraycopy(in,inOff,relevantCiphertext,0,inLen);
  byte[] decrypted=new byte[inLen];
  byte[] paddedPlaintext;
  if (n == 2) {
    engine.init(false,param);
    for (int i=0; i < relevantCiphertext.length; i+=engine.getBlockSize()) {
      engine.processBlock(relevantCiphertext,i,decrypted,i);
    }
    extractedAIV=new byte[8];
    System.arraycopy(decrypted,0,extractedAIV,0,extractedAIV.length);
    paddedPlaintext=new byte[decrypted.length - extractedAIV.length];
    System.arraycopy(decrypted,extractedAIV.length,paddedPlaintext,0,paddedPlaintext.length);
  }
 else {
    decrypted=rfc3394UnwrapNoIvCheck(in,inOff,inLen);
    paddedPlaintext=decrypted;
  }
  byte[] extractedHighOrderAIV=new byte[4];
  byte[] mliBytes=new byte[4];
  System.arraycopy(extractedAIV,0,extractedHighOrderAIV,0,extractedHighOrderAIV.length);
  System.arraycopy(extractedAIV,extractedHighOrderAIV.length,mliBytes,0,mliBytes.length);
  int mli=Pack.bigEndianToInt(mliBytes,0);
  boolean isValid=true;
  if (!Arrays.constantTimeAreEqual(extractedHighOrderAIV,preIV)) {
    isValid=false;
  }
  int upperBound=paddedPlaintext.length;
  int lowerBound=upperBound - 8;
  if (mli <= lowerBound) {
    isValid=false;
  }
  if (mli > upperBound) {
    isValid=false;
  }
  int expectedZeros=upperBound - mli;
  if (expectedZeros >= paddedPlaintext.length) {
    isValid=false;
    expectedZeros=paddedPlaintext.length;
  }
  byte[] zeros=new byte[expectedZeros];
  byte[] pad=new byte[expectedZeros];
  System.arraycopy(paddedPlaintext,paddedPlaintext.length - expectedZeros,pad,0,expectedZeros);
  if (!Arrays.constantTimeAreEqual(pad,zeros)) {
    isValid=false;
  }
  if (!isValid) {
    throw new InvalidCipherTextException("String_Node_Str");
  }
  byte[] plaintext=new byte[mli];
  System.arraycopy(paddedPlaintext,0,plaintext,0,plaintext.length);
  return plaintext;
}