pub(crate) const fn get_bootloader_tx_encoding_space(subversion: MultiVmSubversion) -> u32 {
    (get_used_bootloader_memory_words(subversion)
        - get_tx_description_offset(subversion)
        - MAX_TXS_IN_BATCH) as u32
}
The size of the bootloader memory dedicated to the encodings of transactions
core/lib/multivm/src/versions/vm_latest/constants.rs