benchmark2/integer overflow/1200.sol

pragma solidity ^0.4.23;


contract Ownable {
    address public owner;


    event OwnershipRenounced(address indexed previousOwner);
    event OwnershipTransferred(
      address indexed previousOwner,
      address indexed newOwner
    );


    
    constructor() public {
        owner = msg.sender;
    }

    
    modifier onlyOwner() {
        require(msg.sender == owner);
        _;
    }

    
    function transferOwnership(address newOwner) public onlyOwner {
        require(newOwner != address(0));
        emit OwnershipTransferred(owner, newOwner);
        owner = newOwner;
    }

    
    function renounceOwnership() public onlyOwner {
        emit OwnershipRenounced(owner);
        owner = address(0);
    }
}


library SafeMath {

    
    function mul(uint256 a, uint256 b) internal pure returns (uint256 c) {
        if (a == 0) {
            return 0;
        }
        c = a * b;
        assert(c / a == b);
        return c;
    }

    
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        
        
        
        return a / b;
    }

    
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        assert(b <= a);
        return a - b;
    }

    
    function add(uint256 a, uint256 b) internal pure returns (uint256 c) {
        c = a + b;
        assert(c >= a);
        return c;
    }
}


contract ERC20Basic {
    function totalSupply() public view returns (uint256);
    function balanceOf(address who) public view returns (uint256);
    function transfer(address to, uint256 value) public returns (bool);
    event Transfer(address indexed from, address indexed to, uint256 value);
}


contract ERC20 is ERC20Basic {
    function allowance(address owner, address spender) public view returns (uint256);
    function transferFrom(address from, address to, uint256 value) public returns (bool);
    function approve(address spender, uint256 value) public returns (bool);
    event Approval(address indexed owner, address indexed spender, uint256 value);
}

contract BasicToken is ERC20Basic {
    using SafeMath for uint256;

    mapping(address => uint256) balances;

    uint256 totalSupply_;

    
    function totalSupply() public view returns (uint256) {
        return totalSupply_;
    }

    
    function transfer(address _to, uint256 _value) public returns (bool) {
        require(_to != address(0));
        require(_value <= balances[msg.sender]);

        balances[msg.sender] = balances[msg.sender].sub(_value);
        balances[_to] = balances[_to].add(_value);
        emit Transfer(msg.sender, _to, _value);
        return true;
    }

    
    function balanceOf(address _owner) public view returns (uint256) {
        return balances[_owner];
    }

}

contract StandardToken is ERC20, BasicToken {

    mapping (address => mapping (address => uint256)) internal allowed;


    
    function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
        require(_to != address(0));
        require(_value <= balances[_from]);
        require(_value <= allowed[_from][msg.sender]);

        balances[_from] = balances[_from].sub(_value);
        balances[_to] = balances[_to].add(_value);
        allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
        emit Transfer(_from, _to, _value);
        return true;
    }

    
    function approve(address _spender, uint256 _value) public returns (bool) {
        allowed[msg.sender][_spender] = _value;
        emit Approval(msg.sender, _spender, _value);
        return true;
    }

    
    function allowance(address _owner, address _spender) public view returns (uint256) {
        return allowed[_owner][_spender];
    }

    
    function increaseApproval(address _spender, uint _addedValue) public returns (bool) {
        allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue);
        emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
        return true;
    }

    
    function decreaseApproval(address _spender, uint _subtractedValue) public returns (bool) {
        uint oldValue = allowed[msg.sender][_spender];
        if (_subtractedValue > oldValue) {
          allowed[msg.sender][_spender] = 0;
        } else {
          allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue);
        }
        emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
        return true;
    }
}

contract MintableToken is StandardToken, Ownable {
    event Mint(address indexed to, uint256 amount);
    event MintFinished();

    bool public mintingFinished = false;


    modifier canMint() {
        require(!mintingFinished);
        _;
    }

    
    function mint(address _to, uint256 _amount) onlyOwner canMint public returns (bool) {
        totalSupply_ = totalSupply_.add(_amount);
        balances[_to] = balances[_to].add(_amount);
        emit Mint(_to, _amount);
        emit Transfer(address(0), _to, _amount);
        return true;
    }

    
    function finishMinting() onlyOwner canMint public returns (bool) {
        mintingFinished = true;
        emit MintFinished();
        return true;
    }
}


contract CappedToken is MintableToken {

    uint256 public cap;

    constructor(uint256 _cap) public {
        require(_cap > 0);
        cap = _cap;
    }

    
    function mint(address _to, uint256 _amount) onlyOwner canMint public returns (bool) {
        require(totalSupply_.add(_amount) <= cap);
        return super.mint(_to, _amount);
    }

}

contract Pausable is Ownable {
    event Pause();
    event Unpause();

    bool public paused = false;


    
    modifier whenNotPaused() {
        require(!paused);
        _;
    }

    
    modifier whenPaused() {
        require(paused);
        _;
    }

    
    function pause() onlyOwner whenNotPaused public {
        paused = true;
        emit Pause();
    }

    
    function unpause() onlyOwner whenPaused public {
        paused = false;
        emit Unpause();
    }
}

contract PausableToken is StandardToken, Pausable {
    
    mapping (address => bool) public frozenAccount;
    event FrozenFunds(address target, bool frozen);

    function transfer(address _to, uint256 _value) public whenNotPaused returns (bool) {
        require(!frozenAccount[msg.sender]);
        return super.transfer(_to, _value);
    }

    function transferFrom(address _from, address _to, uint256 _value) public whenNotPaused returns (bool) {
        require(!frozenAccount[_from]);
        return super.transferFrom(_from, _to, _value);
    }

    function approve(address _spender, uint256 _value) public whenNotPaused returns (bool) {
        require((_value == 0) || (allowed[msg.sender][_spender] == 0));
        return super.approve(_spender, _value);
    }

    function increaseApproval(address _spender, uint _addedValue) public whenNotPaused returns (bool success) {
        return super.increaseApproval(_spender, _addedValue);
    }

    function decreaseApproval(address _spender, uint _subtractedValue) public whenNotPaused returns (bool success) {
        return super.decreaseApproval(_spender, _subtractedValue);
    }
  
  
    
    function batchTransfer(address[] _receivers, uint256 _value) public whenNotPaused returns (bool) {
        require(!frozenAccount[msg.sender]);
        uint cnt = _receivers.length;
        uint256 amount = uint256(cnt).mul(_value);
        require(cnt > 0 && cnt <= 500);
        require(_value > 0 && balances[msg.sender] >= amount);
    
        balances[msg.sender] = balances[msg.sender].sub(amount);
        for (uint i = 0; i < cnt; i++) {
            require (_receivers[i] != 0x0);
            balances[_receivers[i]] = balances[_receivers[i]].add(_value);
            emit Transfer(msg.sender, _receivers[i], _value);
        }
        return true;
    }
    
    
    function batchTransferValues(address[] _receivers, uint256[] _values) public whenNotPaused returns (bool) {
        require(!frozenAccount[msg.sender]);
        uint cnt = _receivers.length;
        require(cnt == _values.length);
        require(cnt > 0 && cnt <= 500);
        
        uint256 amount = 0;
        for (uint i = 0; i < cnt; i++) {
            require (_values[i] != 0);
            amount = amount.add(_values[i]);
        }
        
        require(balances[msg.sender] >= amount);
    
        balances[msg.sender] = balances[msg.sender].sub(amount);
        for (uint j = 0; j < cnt; j++) {
            require (_receivers[j] != 0x0);
            balances[_receivers[j]] = balances[_receivers[j]].add(_values[j]);
            emit Transfer(msg.sender, _receivers[j], _values[j]);
        }
        return true;
    }
  
    
    function batchFreeze(address[] _addresses, bool _freeze) onlyOwner public {
        for (uint i = 0; i < _addresses.length; i++) {
            frozenAccount[_addresses[i]] = _freeze;
            emit FrozenFunds(_addresses[i], _freeze);
        }
    }
}

contract LudosToken is CappedToken, PausableToken {
    string public constant name = "Ludos Protocol";
    string public constant symbol = "LUD";
    uint8 public constant decimals = 18;

    uint256 public constant INITIAL_SUPPLY = 0;
    uint256 public constant MAX_SUPPLY = 100 * 10000 * 10000 * (10 ** uint256(decimals));

    
    constructor() CappedToken(MAX_SUPPLY) public {
        totalSupply_ = INITIAL_SUPPLY;
        balances[msg.sender] = INITIAL_SUPPLY;
        emit Transfer(0x0, msg.sender, INITIAL_SUPPLY);
    }

    
    function mint(address _to, uint256 _amount) onlyOwner canMint whenNotPaused public returns (bool) {
        return super.mint(_to, _amount);
    }

    
    function finishMinting() onlyOwner canMint whenNotPaused public returns (bool) {
        return super.finishMinting();
    }

    
    function transferOwnership(address newOwner) onlyOwner whenNotPaused public {
        super.transferOwnership(newOwner);
    }

    
    function() payable public {
        revert();
    }
}