# CauldronV4 (shared with MIM)

**Possibly False Positive**

## High level idea:
You liquidate yourself to farm free reward.

## Details
* Do `cook` with 3 actions:
1. deposit lots of ETH (lets say worth 1M, `collatAmount` eth)
2. borrow lots of MIM (worth 0.95M, `debtAmount` MIM)
3. liquidate yourself (user = msg.sender)
* While liquidating yourself, you are supposed to repay the `debtAmount` + `distributionAmount` worth of MIM, and get the `collatAmount` from the user. After doing this, the healthy check of your actions will pass.
* This sounds unprofitable

uint256 allBorrowShare = bentoBox.toShare(magicInternetMoney, allBorrowAmount, true);

// Swap using a swapper freely chosen by the caller
bentoBox.transfer(collateral, address(this), to, allCollateralShare);
if (swapper != ISwapperV2(address(0))) {
    swapper.swap(address(collateral), address(magicInternetMoney), msg.sender, allBorrowShare, allCollateralShare, swapperData);
            
// calculated again!
allBorrowShare = bentoBox.toShare(magicInternetMoney, allBorrowAmount, true);
bentoBox.transfer(magicInternetMoney, msg.sender, address(this), allBorrowShare);

`allBorrowShare` is re-calculated again after the `swap` call. and `toShare` is :

function toShare(
    IERC20 token,
    uint256 amount,
    bool roundUp
) external view returns (uint256 share) {
    share = totals[token].toBase(amount, roundUp);
}

function toBase(
    Rebase memory total,
    uint256 elastic,
    bool roundUp
) internal pure returns (uint256 base) {
    if (total.elastic == 0) {
        base = elastic;
    } else {
        base = elastic.mul(total.base) / total.elastic;
        if (roundUp && base.mul(total.elastic) / total.base < elastic) {
            base = base.add(1);
        }
    }
}