Check if the node reads tx.origin and doesn't read msg.sender
             Avoid the FP due to (msg.sender == tx.origin)
        Returns:
            (bool)

def _contains_incorrect_tx_origin_use(node):
        """
             Check if the node reads tx.origin and doesn't read msg.sender
             Avoid the FP due to (msg.sender == tx.origin)
        Returns:
            (bool)
        """
        solidity_var_read = node.solidity_variables_read
        if solidity_var_read:
            return any(v.name == 'tx.origin' for v in solidity_var_read) and\
                   all(v.name != 'msg.sender' for v in solidity_var_read)
        return False