pragma experimental ABIEncoderV2;
contract C {
    function f(uint256[][2][] calldata x) external returns (uint256) {
        x[0];
        return 23;
    }
}
// ====
// EVMVersion: >=byzantium
// revertStrings: debug
// ----
// f(uint256[][2][]): 0x20, 0x01, 0x20, 0x00 -> FAILURE, hex"08c379a0", 0x20, 28, "Invalid calldata tail offset"