[Certora] remove liquidate buffer#780
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MathisGD
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| // Hint for the prover to show that there is no bad debt realization. | ||
| assert newBorrowerCollateral != 0; | ||
| // Hint for the prover about the ratio used to close the position. | ||
| assert repaidShares * borrowerCollateral >= seizedAssets * borrowerShares; | ||
| // Prove that the ratio of shares of debt over collateral is smaller after the liquidation. | ||
| assert borrowerShares * newBorrowerCollateral >= newBorrowerShares * borrowerCollateral; |
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curious that we were doing this complex things if it was as simple as liquidateDecreasesBorrowExchangeRate
MathisGD
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I confused the first step for a hint, so when I removed it becomes a redundant spec. The 2 steps are:
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Rationale is that it doesn't prove what it says it proves. What it actually proves is already proven in
liquidateDecreasesBorrowExchangeRate.See this run where the rule in liquidate buffer is simplified, so it looks more like
liquidateDecreasesBorrowExchangeRate