FILE:2024-05-arbitrum-foundation/src/challengeV2/libraries
/EdgeChallengeManagerLib.sol

// check the start and end execution states exist, the block hash entry should be non zero
            if (ard.startState.machineStatus == MachineStatus.RUNNING) {
                revert EmptyStartMachineStatus();
            }
            if (ard.endState.machineStatus == MachineStatus.RUNNING) {
                revert EmptyEndMachineStatus();
            }
// Check that the start and end execution states are not running
// The machine status should not be 'RUNNING' for either the start or end state
            if (ard.startState.machineStatus == MachineStatus.RUNNING) {
                revert EmptyStartMachineStatus();
            }
            if (ard.endState.machineStatus == MachineStatus.RUNNING) {
                revert EmptyEndMachineStatus();
            }
