Program: 85814
Project: 85814
Buggy source:
private static void executeScript(Transaction txContainingThis,long index,Script script,LinkedList<byte[]> stack) throws ScriptException {
  int opCount=0;
  int lastCodeSepLocation=0;
  LinkedList<byte[]> altstack=new LinkedList<byte[]>();
  LinkedList<Boolean> ifStack=new LinkedList<Boolean>();
  for (  ScriptChunk chunk : script.chunks) {
    boolean shouldExecute=!ifStack.contains(false);
    if (!chunk.isOpCode()) {
      if (!shouldExecute)       continue;
      stack.add(chunk.data);
    }
 else {
      int opcode=0xFF & chunk.data[0];
      if (opcode > OP_16) {
        opCount++;
        if (opCount > 201)         throw new ScriptException("String_Node_Str");
      }
      if (opcode == OP_VERIF || opcode == OP_VERNOTIF)       throw new ScriptException("String_Node_Str");
      if (opcode == OP_CAT || opcode == OP_SUBSTR || opcode == OP_LEFT || opcode == OP_RIGHT || opcode == OP_INVERT || opcode == OP_AND || opcode == OP_OR || opcode == OP_XOR || opcode == OP_2MUL || opcode == OP_2DIV || opcode == OP_MUL || opcode == OP_DIV || opcode == OP_MOD || opcode == OP_LSHIFT || opcode == OP_RSHIFT)       throw new ScriptException("String_Node_Str");
switch (opcode) {
case OP_IF:
        if (!shouldExecute) {
          ifStack.add(false);
          continue;
        }
      if (stack.size() < 1)       throw new ScriptException("String_Node_Str");
    ifStack.add(castToBool(stack.pollLast()));
  continue;
case OP_NOTIF:
if (!shouldExecute) {
  ifStack.add(false);
  continue;
}
if (stack.size() < 1) throw new ScriptException("String_Node_Str");
ifStack.add(!castToBool(stack.pollLast()));
continue;
case OP_ELSE:
if (ifStack.isEmpty()) throw new ScriptException("String_Node_Str");
ifStack.add(!ifStack.pollLast());
continue;
case OP_ENDIF:
if (ifStack.isEmpty()) throw new ScriptException("String_Node_Str");
ifStack.pollLast();
continue;
}
if (!shouldExecute) continue;
switch (opcode) {
case OP_1NEGATE:
stack.add(Utils.reverseBytes(Utils.encodeMPI(BigInteger.ONE.negate(),false)));
break;
case OP_1:
case OP_2:
case OP_3:
case OP_4:
case OP_5:
case OP_6:
case OP_7:
case OP_8:
case OP_9:
case OP_10:
case OP_11:
case OP_12:
case OP_13:
case OP_14:
case OP_15:
case OP_16:
stack.add(Utils.reverseBytes(Utils.encodeMPI(BigInteger.valueOf(decodeFromOpN(opcode)),false)));
break;
case OP_NOP:
break;
case OP_VERIFY:
if (stack.size() < 1) throw new ScriptException("String_Node_Str");
if (!castToBool(stack.pollLast())) throw new ScriptException("String_Node_Str");
break;
case OP_RETURN:
throw new ScriptException("String_Node_Str");
case OP_TOALTSTACK:
if (stack.size() < 1) throw new ScriptException("String_Node_Str");
altstack.add(stack.pollLast());
break;
case OP_FROMALTSTACK:
if (altstack.size() < 1) throw new ScriptException("String_Node_Str");
stack.add(altstack.pollLast());
break;
case OP_2DROP:
if (stack.size() < 2) throw new ScriptException("String_Node_Str");
stack.pollLast();
stack.pollLast();
break;
case OP_2DUP:
if (stack.size() < 2) throw new ScriptException("String_Node_Str");
Iterator<byte[]> it2DUP=stack.descendingIterator();
byte[] OP2DUPtmpChunk2=it2DUP.next();
stack.add(it2DUP.next());
stack.add(OP2DUPtmpChunk2);
break;
case OP_3DUP:
if (stack.size() < 3) throw new ScriptException("String_Node_Str");
Iterator<byte[]> it3DUP=stack.descendingIterator();
byte[] OP3DUPtmpChunk3=it3DUP.next();
byte[] OP3DUPtmpChunk2=it3DUP.next();
stack.add(it3DUP.next());
stack.add(OP3DUPtmpChunk2);
stack.add(OP3DUPtmpChunk3);
break;
case OP_2OVER:
if (stack.size() < 4) throw new ScriptException("String_Node_Str");
Iterator<byte[]> it2OVER=stack.descendingIterator();
it2OVER.next();
it2OVER.next();
byte[] OP2OVERtmpChunk2=it2OVER.next();
stack.add(it2OVER.next());
stack.add(OP2OVERtmpChunk2);
break;
case OP_2ROT:
if (stack.size() < 6) throw new ScriptException("String_Node_Str");
byte[] OP2ROTtmpChunk6=stack.pollLast();
byte[] OP2ROTtmpChunk5=stack.pollLast();
byte[] OP2ROTtmpChunk4=stack.pollLast();
byte[] OP2ROTtmpChunk3=stack.pollLast();
byte[] OP2ROTtmpChunk2=stack.pollLast();
byte[] OP2ROTtmpChunk1=stack.pollLast();
stack.add(OP2ROTtmpChunk3);
stack.add(OP2ROTtmpChunk4);
stack.add(OP2ROTtmpChunk5);
stack.add(OP2ROTtmpChunk6);
stack.add(OP2ROTtmpChunk1);
stack.add(OP2ROTtmpChunk2);
break;
case OP_2SWAP:
if (stack.size() < 4) throw new ScriptException("String_Node_Str");
byte[] OP2SWAPtmpChunk4=stack.pollLast();
byte[] OP2SWAPtmpChunk3=stack.pollLast();
byte[] OP2SWAPtmpChunk2=stack.pollLast();
byte[] OP2SWAPtmpChunk1=stack.pollLast();
stack.add(OP2SWAPtmpChunk3);
stack.add(OP2SWAPtmpChunk4);
stack.add(OP2SWAPtmpChunk1);
stack.add(OP2SWAPtmpChunk2);
break;
case OP_IFDUP:
if (stack.size() < 1) throw new ScriptException("String_Node_Str");
if (castToBool(stack.getLast())) stack.add(stack.getLast());
break;
case OP_DEPTH:
stack.add(Utils.reverseBytes(Utils.encodeMPI(BigInteger.valueOf(stack.size()),false)));
break;
case OP_DROP:
if (stack.size() < 1) throw new ScriptException("String_Node_Str");
stack.pollLast();
break;
case OP_DUP:
if (stack.size() < 1) throw new ScriptException("String_Node_Str");
stack.add(stack.getLast());
break;
case OP_NIP:
if (stack.size() < 2) throw new ScriptException("String_Node_Str");
byte[] OPNIPtmpChunk=stack.pollLast();
stack.pollLast();
stack.add(OPNIPtmpChunk);
break;
case OP_OVER:
if (stack.size() < 2) throw new ScriptException("String_Node_Str");
Iterator<byte[]> itOVER=stack.descendingIterator();
itOVER.next();
stack.add(itOVER.next());
break;
case OP_PICK:
case OP_ROLL:
if (stack.size() < 1) throw new ScriptException("String_Node_Str");
long val=castToBigInteger(stack.pollLast()).longValue();
if (val < 0 || val >= stack.size()) throw new ScriptException("String_Node_Str");
Iterator<byte[]> itPICK=stack.descendingIterator();
for (long i=0; i < val; i++) itPICK.next();
byte[] OPROLLtmpChunk=itPICK.next();
if (opcode == OP_ROLL) itPICK.remove();
stack.add(OPROLLtmpChunk);
break;
case OP_ROT:
if (stack.size() < 3) throw new ScriptException("String_Node_Str");
byte[] OPROTtmpChunk3=stack.pollLast();
byte[] OPROTtmpChunk2=stack.pollLast();
byte[] OPROTtmpChunk1=stack.pollLast();
stack.add(OPROTtmpChunk2);
stack.add(OPROTtmpChunk3);
stack.add(OPROTtmpChunk1);
break;
case OP_SWAP:
case OP_TUCK:
if (stack.size() < 2) throw new ScriptException("String_Node_Str");
byte[] OPSWAPtmpChunk2=stack.pollLast();
byte[] OPSWAPtmpChunk1=stack.pollLast();
stack.add(OPSWAPtmpChunk2);
stack.add(OPSWAPtmpChunk1);
if (opcode == OP_TUCK) stack.add(OPSWAPtmpChunk2);
break;
case OP_CAT:
case OP_SUBSTR:
case OP_LEFT:
case OP_RIGHT:
throw new ScriptException("String_Node_Str");
case OP_SIZE:
if (stack.size() < 1) throw new ScriptException("String_Node_Str");
stack.add(Utils.reverseBytes(Utils.encodeMPI(BigInteger.valueOf(stack.getLast().length),false)));
break;
case OP_INVERT:
case OP_AND:
case OP_OR:
case OP_XOR:
throw new ScriptException("String_Node_Str");
case OP_EQUAL:
if (stack.size() < 2) throw new ScriptException("String_Node_Str");
stack.add(Arrays.equals(stack.pollLast(),stack.pollLast()) ? new byte[]{1} : new byte[]{0});
break;
case OP_EQUALVERIFY:
if (stack.size() < 2) throw new ScriptException("String_Node_Str");
if (!Arrays.equals(stack.pollLast(),stack.pollLast())) throw new ScriptException("String_Node_Str");
break;
case OP_1ADD:
case OP_1SUB:
case OP_NEGATE:
case OP_ABS:
case OP_NOT:
case OP_0NOTEQUAL:
if (stack.size() < 1) throw new ScriptException("String_Node_Str");
BigInteger numericOPnum=castToBigInteger(stack.pollLast());
switch (opcode) {
case OP_1ADD:
numericOPnum=numericOPnum.add(BigInteger.ONE);
break;
case OP_1SUB:
numericOPnum=numericOPnum.subtract(BigInteger.ONE);
break;
case OP_NEGATE:
numericOPnum=numericOPnum.negate();
break;
case OP_ABS:
if (numericOPnum.compareTo(BigInteger.ZERO) < 0) numericOPnum=numericOPnum.negate();
break;
case OP_NOT:
if (numericOPnum.equals(BigInteger.ZERO)) numericOPnum=BigInteger.ONE;
 else numericOPnum=BigInteger.ZERO;
break;
case OP_0NOTEQUAL:
if (numericOPnum.equals(BigInteger.ZERO)) numericOPnum=BigInteger.ZERO;
 else numericOPnum=BigInteger.ONE;
break;
default :
throw new AssertionError("String_Node_Str");
}
stack.add(Utils.reverseBytes(Utils.encodeMPI(numericOPnum,false)));
break;
case OP_2MUL:
case OP_2DIV:
throw new ScriptException("String_Node_Str");
case OP_ADD:
case OP_SUB:
case OP_BOOLAND:
case OP_BOOLOR:
case OP_NUMEQUAL:
case OP_NUMNOTEQUAL:
case OP_LESSTHAN:
case OP_GREATERTHAN:
case OP_LESSTHANOREQUAL:
case OP_GREATERTHANOREQUAL:
case OP_MIN:
case OP_MAX:
if (stack.size() < 2) throw new ScriptException("String_Node_Str");
BigInteger numericOPnum2=castToBigInteger(stack.pollLast());
BigInteger numericOPnum1=castToBigInteger(stack.pollLast());
BigInteger numericOPresult;
switch (opcode) {
case OP_ADD:
numericOPresult=numericOPnum1.add(numericOPnum2);
break;
case OP_SUB:
numericOPresult=numericOPnum1.subtract(numericOPnum2);
break;
case OP_BOOLAND:
if (!numericOPnum1.equals(BigInteger.ZERO) && !numericOPnum2.equals(BigInteger.ZERO)) numericOPresult=BigInteger.ONE;
 else numericOPresult=BigInteger.ZERO;
break;
case OP_BOOLOR:
if (!numericOPnum1.equals(BigInteger.ZERO) || !numericOPnum2.equals(BigInteger.ZERO)) numericOPresult=BigInteger.ONE;
 else numericOPresult=BigInteger.ZERO;
break;
case OP_NUMEQUAL:
if (numericOPnum1.equals(numericOPnum2)) numericOPresult=BigInteger.ONE;
 else numericOPresult=BigInteger.ZERO;
break;
case OP_NUMNOTEQUAL:
if (!numericOPnum1.equals(numericOPnum2)) numericOPresult=BigInteger.ONE;
 else numericOPresult=BigInteger.ZERO;
break;
case OP_LESSTHAN:
if (numericOPnum1.compareTo(numericOPnum2) < 0) numericOPresult=BigInteger.ONE;
 else numericOPresult=BigInteger.ZERO;
break;
case OP_GREATERTHAN:
if (numericOPnum1.compareTo(numericOPnum2) > 0) numericOPresult=BigInteger.ONE;
 else numericOPresult=BigInteger.ZERO;
break;
case OP_LESSTHANOREQUAL:
if (numericOPnum1.compareTo(numericOPnum2) <= 0) numericOPresult=BigInteger.ONE;
 else numericOPresult=BigInteger.ZERO;
break;
case OP_GREATERTHANOREQUAL:
if (numericOPnum1.compareTo(numericOPnum2) >= 0) numericOPresult=BigInteger.ONE;
 else numericOPresult=BigInteger.ZERO;
break;
case OP_MIN:
if (numericOPnum1.compareTo(numericOPnum2) < 0) numericOPresult=numericOPnum1;
 else numericOPresult=numericOPnum2;
break;
case OP_MAX:
if (numericOPnum1.compareTo(numericOPnum2) > 0) numericOPresult=numericOPnum1;
 else numericOPresult=numericOPnum2;
break;
default :
throw new RuntimeException("String_Node_Str");
}
stack.add(Utils.reverseBytes(Utils.encodeMPI(numericOPresult,false)));
break;
case OP_MUL:
case OP_DIV:
case OP_MOD:
case OP_LSHIFT:
case OP_RSHIFT:
throw new ScriptException("String_Node_Str");
case OP_NUMEQUALVERIFY:
if (stack.size() < 2) throw new ScriptException("String_Node_Str");
BigInteger OPNUMEQUALVERIFYnum2=castToBigInteger(stack.pollLast());
BigInteger OPNUMEQUALVERIFYnum1=castToBigInteger(stack.pollLast());
if (!OPNUMEQUALVERIFYnum1.equals(OPNUMEQUALVERIFYnum2)) throw new ScriptException("String_Node_Str");
break;
case OP_WITHIN:
if (stack.size() < 3) throw new ScriptException("String_Node_Str");
BigInteger OPWITHINnum3=castToBigInteger(stack.pollLast());
BigInteger OPWITHINnum2=castToBigInteger(stack.pollLast());
BigInteger OPWITHINnum1=castToBigInteger(stack.pollLast());
if (OPWITHINnum2.compareTo(OPWITHINnum1) <= 0 && OPWITHINnum1.compareTo(OPWITHINnum3) < 0) stack.add(Utils.reverseBytes(Utils.encodeMPI(BigInteger.ONE,false)));
 else stack.add(Utils.reverseBytes(Utils.encodeMPI(BigInteger.ZERO,false)));
break;
case OP_RIPEMD160:
if (stack.size() < 1) throw new ScriptException("String_Node_Str");
RIPEMD160Digest digest=new RIPEMD160Digest();
byte[] dataToHash=stack.pollLast();
digest.update(dataToHash,0,dataToHash.length);
byte[] ripmemdHash=new byte[20];
digest.doFinal(ripmemdHash,0);
stack.add(ripmemdHash);
break;
case OP_SHA1:
if (stack.size() < 1) throw new ScriptException("String_Node_Str");
try {
stack.add(MessageDigest.getInstance("String_Node_Str").digest(stack.pollLast()));
}
 catch (NoSuchAlgorithmException e) {
throw new RuntimeException(e);
}
break;
case OP_SHA256:
if (stack.size() < 1) throw new ScriptException("String_Node_Str");
try {
stack.add(MessageDigest.getInstance("String_Node_Str").digest(stack.pollLast()));
}
 catch (NoSuchAlgorithmException e) {
throw new RuntimeException(e);
}
break;
case OP_HASH160:
if (stack.size() < 1) throw new ScriptException("String_Node_Str");
stack.add(Utils.sha256hash160(stack.pollLast()));
break;
case OP_HASH256:
if (stack.size() < 1) throw new ScriptException("String_Node_Str");
stack.add(Utils.doubleDigest(stack.pollLast()));
break;
case OP_CODESEPARATOR:
lastCodeSepLocation=chunk.getStartLocationInProgram() + 1;
break;
case OP_CHECKSIG:
case OP_CHECKSIGVERIFY:
executeCheckSig(txContainingThis,(int)index,script,stack,lastCodeSepLocation,opcode);
break;
case OP_CHECKMULTISIG:
case OP_CHECKMULTISIGVERIFY:
opCount=executeMultiSig(txContainingThis,(int)index,script,stack,opCount,lastCodeSepLocation,opcode);
break;
case OP_NOP1:
case OP_NOP2:
case OP_NOP3:
case OP_NOP4:
case OP_NOP5:
case OP_NOP6:
case OP_NOP7:
case OP_NOP8:
case OP_NOP9:
case OP_NOP10:
break;
default :
throw new ScriptException("String_Node_Str");
}
}
if (stack.size() + altstack.size() > 1000 || stack.size() + altstack.size() < 0) throw new ScriptException("String_Node_Str");
}
if (!ifStack.isEmpty()) throw new ScriptException("String_Node_Str");
}

Fixed version (ground truth):
private static void executeScript(Transaction txContainingThis,long index,Script script,LinkedList<byte[]> stack) throws ScriptException {
  int opCount=0;
  int lastCodeSepLocation=0;
  LinkedList<byte[]> altstack=new LinkedList<byte[]>();
  LinkedList<Boolean> ifStack=new LinkedList<Boolean>();
  for (  ScriptChunk chunk : script.chunks) {
    boolean shouldExecute=!ifStack.contains(false);
    if (!chunk.isOpCode()) {
      if (!shouldExecute)       continue;
      stack.add(chunk.data);
    }
 else {
      int opcode=0xFF & chunk.data[0];
      if (opcode > OP_16) {
        opCount++;
        if (opCount > 201)         throw new ScriptException("String_Node_Str");
      }
      if (opcode == OP_VERIF || opcode == OP_VERNOTIF)       throw new ScriptException("String_Node_Str");
      if (opcode == OP_CAT || opcode == OP_SUBSTR || opcode == OP_LEFT || opcode == OP_RIGHT || opcode == OP_INVERT || opcode == OP_AND || opcode == OP_OR || opcode == OP_XOR || opcode == OP_2MUL || opcode == OP_2DIV || opcode == OP_MUL || opcode == OP_DIV || opcode == OP_MOD || opcode == OP_LSHIFT || opcode == OP_RSHIFT)       throw new ScriptException("String_Node_Str");
switch (opcode) {
case OP_IF:
        if (!shouldExecute) {
          ifStack.add(false);
          continue;
        }
      if (stack.size() < 1)       throw new ScriptException("String_Node_Str");
    ifStack.add(castToBool(stack.pollLast()));
  continue;
case OP_NOTIF:
if (!shouldExecute) {
  ifStack.add(false);
  continue;
}
if (stack.size() < 1) throw new ScriptException("String_Node_Str");
ifStack.add(!castToBool(stack.pollLast()));
continue;
case OP_ELSE:
if (ifStack.isEmpty()) throw new ScriptException("String_Node_Str");
ifStack.add(!ifStack.pollLast());
continue;
case OP_ENDIF:
if (ifStack.isEmpty()) throw new ScriptException("String_Node_Str");
ifStack.pollLast();
continue;
}
if (!shouldExecute) continue;
switch (opcode) {
case OP_0:
stack.add(new byte[]{0});
break;
case OP_1NEGATE:
stack.add(Utils.reverseBytes(Utils.encodeMPI(BigInteger.ONE.negate(),false)));
break;
case OP_1:
case OP_2:
case OP_3:
case OP_4:
case OP_5:
case OP_6:
case OP_7:
case OP_8:
case OP_9:
case OP_10:
case OP_11:
case OP_12:
case OP_13:
case OP_14:
case OP_15:
case OP_16:
stack.add(Utils.reverseBytes(Utils.encodeMPI(BigInteger.valueOf(decodeFromOpN(opcode)),false)));
break;
case OP_NOP:
break;
case OP_VERIFY:
if (stack.size() < 1) throw new ScriptException("String_Node_Str");
if (!castToBool(stack.pollLast())) throw new ScriptException("String_Node_Str");
break;
case OP_RETURN:
throw new ScriptException("String_Node_Str");
case OP_TOALTSTACK:
if (stack.size() < 1) throw new ScriptException("String_Node_Str");
altstack.add(stack.pollLast());
break;
case OP_FROMALTSTACK:
if (altstack.size() < 1) throw new ScriptException("String_Node_Str");
stack.add(altstack.pollLast());
break;
case OP_2DROP:
if (stack.size() < 2) throw new ScriptException("String_Node_Str");
stack.pollLast();
stack.pollLast();
break;
case OP_2DUP:
if (stack.size() < 2) throw new ScriptException("String_Node_Str");
Iterator<byte[]> it2DUP=stack.descendingIterator();
byte[] OP2DUPtmpChunk2=it2DUP.next();
stack.add(it2DUP.next());
stack.add(OP2DUPtmpChunk2);
break;
case OP_3DUP:
if (stack.size() < 3) throw new ScriptException("String_Node_Str");
Iterator<byte[]> it3DUP=stack.descendingIterator();
byte[] OP3DUPtmpChunk3=it3DUP.next();
byte[] OP3DUPtmpChunk2=it3DUP.next();
stack.add(it3DUP.next());
stack.add(OP3DUPtmpChunk2);
stack.add(OP3DUPtmpChunk3);
break;
case OP_2OVER:
if (stack.size() < 4) throw new ScriptException("String_Node_Str");
Iterator<byte[]> it2OVER=stack.descendingIterator();
it2OVER.next();
it2OVER.next();
byte[] OP2OVERtmpChunk2=it2OVER.next();
stack.add(it2OVER.next());
stack.add(OP2OVERtmpChunk2);
break;
case OP_2ROT:
if (stack.size() < 6) throw new ScriptException("String_Node_Str");
byte[] OP2ROTtmpChunk6=stack.pollLast();
byte[] OP2ROTtmpChunk5=stack.pollLast();
byte[] OP2ROTtmpChunk4=stack.pollLast();
byte[] OP2ROTtmpChunk3=stack.pollLast();
byte[] OP2ROTtmpChunk2=stack.pollLast();
byte[] OP2ROTtmpChunk1=stack.pollLast();
stack.add(OP2ROTtmpChunk3);
stack.add(OP2ROTtmpChunk4);
stack.add(OP2ROTtmpChunk5);
stack.add(OP2ROTtmpChunk6);
stack.add(OP2ROTtmpChunk1);
stack.add(OP2ROTtmpChunk2);
break;
case OP_2SWAP:
if (stack.size() < 4) throw new ScriptException("String_Node_Str");
byte[] OP2SWAPtmpChunk4=stack.pollLast();
byte[] OP2SWAPtmpChunk3=stack.pollLast();
byte[] OP2SWAPtmpChunk2=stack.pollLast();
byte[] OP2SWAPtmpChunk1=stack.pollLast();
stack.add(OP2SWAPtmpChunk3);
stack.add(OP2SWAPtmpChunk4);
stack.add(OP2SWAPtmpChunk1);
stack.add(OP2SWAPtmpChunk2);
break;
case OP_IFDUP:
if (stack.size() < 1) throw new ScriptException("String_Node_Str");
if (castToBool(stack.getLast())) stack.add(stack.getLast());
break;
case OP_DEPTH:
stack.add(Utils.reverseBytes(Utils.encodeMPI(BigInteger.valueOf(stack.size()),false)));
break;
case OP_DROP:
if (stack.size() < 1) throw new ScriptException("String_Node_Str");
stack.pollLast();
break;
case OP_DUP:
if (stack.size() < 1) throw new ScriptException("String_Node_Str");
stack.add(stack.getLast());
break;
case OP_NIP:
if (stack.size() < 2) throw new ScriptException("String_Node_Str");
byte[] OPNIPtmpChunk=stack.pollLast();
stack.pollLast();
stack.add(OPNIPtmpChunk);
break;
case OP_OVER:
if (stack.size() < 2) throw new ScriptException("String_Node_Str");
Iterator<byte[]> itOVER=stack.descendingIterator();
itOVER.next();
stack.add(itOVER.next());
break;
case OP_PICK:
case OP_ROLL:
if (stack.size() < 1) throw new ScriptException("String_Node_Str");
long val=castToBigInteger(stack.pollLast()).longValue();
if (val < 0 || val >= stack.size()) throw new ScriptException("String_Node_Str");
Iterator<byte[]> itPICK=stack.descendingIterator();
for (long i=0; i < val; i++) itPICK.next();
byte[] OPROLLtmpChunk=itPICK.next();
if (opcode == OP_ROLL) itPICK.remove();
stack.add(OPROLLtmpChunk);
break;
case OP_ROT:
if (stack.size() < 3) throw new ScriptException("String_Node_Str");
byte[] OPROTtmpChunk3=stack.pollLast();
byte[] OPROTtmpChunk2=stack.pollLast();
byte[] OPROTtmpChunk1=stack.pollLast();
stack.add(OPROTtmpChunk2);
stack.add(OPROTtmpChunk3);
stack.add(OPROTtmpChunk1);
break;
case OP_SWAP:
case OP_TUCK:
if (stack.size() < 2) throw new ScriptException("String_Node_Str");
byte[] OPSWAPtmpChunk2=stack.pollLast();
byte[] OPSWAPtmpChunk1=stack.pollLast();
stack.add(OPSWAPtmpChunk2);
stack.add(OPSWAPtmpChunk1);
if (opcode == OP_TUCK) stack.add(OPSWAPtmpChunk2);
break;
case OP_CAT:
case OP_SUBSTR:
case OP_LEFT:
case OP_RIGHT:
throw new ScriptException("String_Node_Str");
case OP_SIZE:
if (stack.size() < 1) throw new ScriptException("String_Node_Str");
stack.add(Utils.reverseBytes(Utils.encodeMPI(BigInteger.valueOf(stack.getLast().length),false)));
break;
case OP_INVERT:
case OP_AND:
case OP_OR:
case OP_XOR:
throw new ScriptException("String_Node_Str");
case OP_EQUAL:
if (stack.size() < 2) throw new ScriptException("String_Node_Str");
stack.add(Arrays.equals(stack.pollLast(),stack.pollLast()) ? new byte[]{1} : new byte[]{0});
break;
case OP_EQUALVERIFY:
if (stack.size() < 2) throw new ScriptException("String_Node_Str");
if (!Arrays.equals(stack.pollLast(),stack.pollLast())) throw new ScriptException("String_Node_Str");
break;
case OP_1ADD:
case OP_1SUB:
case OP_NEGATE:
case OP_ABS:
case OP_NOT:
case OP_0NOTEQUAL:
if (stack.size() < 1) throw new ScriptException("String_Node_Str");
BigInteger numericOPnum=castToBigInteger(stack.pollLast());
switch (opcode) {
case OP_1ADD:
numericOPnum=numericOPnum.add(BigInteger.ONE);
break;
case OP_1SUB:
numericOPnum=numericOPnum.subtract(BigInteger.ONE);
break;
case OP_NEGATE:
numericOPnum=numericOPnum.negate();
break;
case OP_ABS:
if (numericOPnum.compareTo(BigInteger.ZERO) < 0) numericOPnum=numericOPnum.negate();
break;
case OP_NOT:
if (numericOPnum.equals(BigInteger.ZERO)) numericOPnum=BigInteger.ONE;
 else numericOPnum=BigInteger.ZERO;
break;
case OP_0NOTEQUAL:
if (numericOPnum.equals(BigInteger.ZERO)) numericOPnum=BigInteger.ZERO;
 else numericOPnum=BigInteger.ONE;
break;
default :
throw new AssertionError("String_Node_Str");
}
stack.add(Utils.reverseBytes(Utils.encodeMPI(numericOPnum,false)));
break;
case OP_2MUL:
case OP_2DIV:
throw new ScriptException("String_Node_Str");
case OP_ADD:
case OP_SUB:
case OP_BOOLAND:
case OP_BOOLOR:
case OP_NUMEQUAL:
case OP_NUMNOTEQUAL:
case OP_LESSTHAN:
case OP_GREATERTHAN:
case OP_LESSTHANOREQUAL:
case OP_GREATERTHANOREQUAL:
case OP_MIN:
case OP_MAX:
if (stack.size() < 2) throw new ScriptException("String_Node_Str");
BigInteger numericOPnum2=castToBigInteger(stack.pollLast());
BigInteger numericOPnum1=castToBigInteger(stack.pollLast());
BigInteger numericOPresult;
switch (opcode) {
case OP_ADD:
numericOPresult=numericOPnum1.add(numericOPnum2);
break;
case OP_SUB:
numericOPresult=numericOPnum1.subtract(numericOPnum2);
break;
case OP_BOOLAND:
if (!numericOPnum1.equals(BigInteger.ZERO) && !numericOPnum2.equals(BigInteger.ZERO)) numericOPresult=BigInteger.ONE;
 else numericOPresult=BigInteger.ZERO;
break;
case OP_BOOLOR:
if (!numericOPnum1.equals(BigInteger.ZERO) || !numericOPnum2.equals(BigInteger.ZERO)) numericOPresult=BigInteger.ONE;
 else numericOPresult=BigInteger.ZERO;
break;
case OP_NUMEQUAL:
if (numericOPnum1.equals(numericOPnum2)) numericOPresult=BigInteger.ONE;
 else numericOPresult=BigInteger.ZERO;
break;
case OP_NUMNOTEQUAL:
if (!numericOPnum1.equals(numericOPnum2)) numericOPresult=BigInteger.ONE;
 else numericOPresult=BigInteger.ZERO;
break;
case OP_LESSTHAN:
if (numericOPnum1.compareTo(numericOPnum2) < 0) numericOPresult=BigInteger.ONE;
 else numericOPresult=BigInteger.ZERO;
break;
case OP_GREATERTHAN:
if (numericOPnum1.compareTo(numericOPnum2) > 0) numericOPresult=BigInteger.ONE;
 else numericOPresult=BigInteger.ZERO;
break;
case OP_LESSTHANOREQUAL:
if (numericOPnum1.compareTo(numericOPnum2) <= 0) numericOPresult=BigInteger.ONE;
 else numericOPresult=BigInteger.ZERO;
break;
case OP_GREATERTHANOREQUAL:
if (numericOPnum1.compareTo(numericOPnum2) >= 0) numericOPresult=BigInteger.ONE;
 else numericOPresult=BigInteger.ZERO;
break;
case OP_MIN:
if (numericOPnum1.compareTo(numericOPnum2) < 0) numericOPresult=numericOPnum1;
 else numericOPresult=numericOPnum2;
break;
case OP_MAX:
if (numericOPnum1.compareTo(numericOPnum2) > 0) numericOPresult=numericOPnum1;
 else numericOPresult=numericOPnum2;
break;
default :
throw new RuntimeException("String_Node_Str");
}
stack.add(Utils.reverseBytes(Utils.encodeMPI(numericOPresult,false)));
break;
case OP_MUL:
case OP_DIV:
case OP_MOD:
case OP_LSHIFT:
case OP_RSHIFT:
throw new ScriptException("String_Node_Str");
case OP_NUMEQUALVERIFY:
if (stack.size() < 2) throw new ScriptException("String_Node_Str");
BigInteger OPNUMEQUALVERIFYnum2=castToBigInteger(stack.pollLast());
BigInteger OPNUMEQUALVERIFYnum1=castToBigInteger(stack.pollLast());
if (!OPNUMEQUALVERIFYnum1.equals(OPNUMEQUALVERIFYnum2)) throw new ScriptException("String_Node_Str");
break;
case OP_WITHIN:
if (stack.size() < 3) throw new ScriptException("String_Node_Str");
BigInteger OPWITHINnum3=castToBigInteger(stack.pollLast());
BigInteger OPWITHINnum2=castToBigInteger(stack.pollLast());
BigInteger OPWITHINnum1=castToBigInteger(stack.pollLast());
if (OPWITHINnum2.compareTo(OPWITHINnum1) <= 0 && OPWITHINnum1.compareTo(OPWITHINnum3) < 0) stack.add(Utils.reverseBytes(Utils.encodeMPI(BigInteger.ONE,false)));
 else stack.add(Utils.reverseBytes(Utils.encodeMPI(BigInteger.ZERO,false)));
break;
case OP_RIPEMD160:
if (stack.size() < 1) throw new ScriptException("String_Node_Str");
RIPEMD160Digest digest=new RIPEMD160Digest();
byte[] dataToHash=stack.pollLast();
digest.update(dataToHash,0,dataToHash.length);
byte[] ripmemdHash=new byte[20];
digest.doFinal(ripmemdHash,0);
stack.add(ripmemdHash);
break;
case OP_SHA1:
if (stack.size() < 1) throw new ScriptException("String_Node_Str");
try {
stack.add(MessageDigest.getInstance("String_Node_Str").digest(stack.pollLast()));
}
 catch (NoSuchAlgorithmException e) {
throw new RuntimeException(e);
}
break;
case OP_SHA256:
if (stack.size() < 1) throw new ScriptException("String_Node_Str");
try {
stack.add(MessageDigest.getInstance("String_Node_Str").digest(stack.pollLast()));
}
 catch (NoSuchAlgorithmException e) {
throw new RuntimeException(e);
}
break;
case OP_HASH160:
if (stack.size() < 1) throw new ScriptException("String_Node_Str");
stack.add(Utils.sha256hash160(stack.pollLast()));
break;
case OP_HASH256:
if (stack.size() < 1) throw new ScriptException("String_Node_Str");
stack.add(Utils.doubleDigest(stack.pollLast()));
break;
case OP_CODESEPARATOR:
lastCodeSepLocation=chunk.getStartLocationInProgram() + 1;
break;
case OP_CHECKSIG:
case OP_CHECKSIGVERIFY:
executeCheckSig(txContainingThis,(int)index,script,stack,lastCodeSepLocation,opcode);
break;
case OP_CHECKMULTISIG:
case OP_CHECKMULTISIGVERIFY:
opCount=executeMultiSig(txContainingThis,(int)index,script,stack,opCount,lastCodeSepLocation,opcode);
break;
case OP_NOP1:
case OP_NOP2:
case OP_NOP3:
case OP_NOP4:
case OP_NOP5:
case OP_NOP6:
case OP_NOP7:
case OP_NOP8:
case OP_NOP9:
case OP_NOP10:
break;
default :
throw new ScriptException("String_Node_Str" + opcode);
}
}
if (stack.size() + altstack.size() > 1000 || stack.size() + altstack.size() < 0) throw new ScriptException("String_Node_Str");
}
if (!ifStack.isEmpty()) throw new ScriptException("String_Node_Str");
}