Integrating ADTs in KeY and their Application to History-based Reasoning about Collection : Proof files

The project files for the journal `Integrating ADTs in KeY and their Application to History-based reasoning about Collection.' The archive contains:

The bundled version of KeY, key-2.8.0-exe.jar.
The java source code of the project.
Isabelle code (Collections. thy). The Isabelle version we use is Isabelle 2020. It can be download from the official website.
Several user-defined lemmas that we need when we do the proof (addAll_rule.key)
A number of proof files that can be loaded in KeY that verifies the contract for our case study.
A document showing the proof settings in KeY.