//contracts/op/OPFaultVerifier.sol

    function getStorageValues(
        bytes memory context,
        GatewayRequest memory req,
        bytes memory proof
    ) external view returns (bytes[] memory, uint8 exitCode) {
...
        //@audit 4 return variables
|>      (, , IDisputeGame gameProxy, uint256 blockNumber) = _gameFinder.gameAtIndex(
            _portal,
            _minAgeSec,
            _gameTypeBitMask,
            p.gameIndex
        );
...
//contracts/op/OPFaultGameFinder.sol
    function gameAtIndex(
        IOptimismPortal portal,
        uint256 minAgeSec,
        uint256 gameTypeBitMask,
        uint256 gameIndex
    )
        external
        view
        returns (uint256 gameType, uint256 created, IDisputeGame gameProxy, uint256 l2BlockNumber, bytes32 rootClaim)
    {
...
