This book constitutes the refereed workshop proceedings of the 11th International Workshop on Structured Object-Oriented Formal Language and Method, SOFL+MSVL 2022, held in Madrid, in October 2022.The 12 revised full papers included in the volume were carefully reviewed and selected from 26 submissions.

Model Checking & Markov Decision Process.- Formal Derivation and Verification of Critical Path Algorithm for Directed Acyclic Graph.- An Approach of Transforming Non-Markovian Reward to Markovian Reward.- A JPSL based Model Checking Approach for Java Programs.- Model Analysis & Tool Implementation.- Implementation of Matlab matfun Toolkit Based on MSVL.- Extending Visibly Pushdown Automata over Multi-matching Nested Relations.- Schedulability analysis of rate-monotonic algorithm on concurrent execution of digraph real-time tasks.- Formal Specification & Testing.- Formalization of natural language into PPTL specification via neural machine translation.- Testing Program Segments to Detect Runtime Exceptions in Java.- Inferring Exact Domains to Efficiently Generate Valid Test Cases via Testing.- Algorithms & Verification.- Testing and Verifying the security of COVID-19 CT Images Deep Learning System with Adversarial Attack.- Verifying and improving neural networks using testing-based formal verification.- Alternating Projection Temporal Epistemic Logic.