Artifact for "Escape with Your Self: Sound and Expressive Bidirectional Typing with Avoidance for Reachability Types"

This artifact requires Lean for proofs and examples, and Python 3 for figures.

• Python libraries: python 3.12.3 on Ubuntu 24.04, matplotlib 3.6.3, numpy 1.26.4
• The version control for Lean has already been set in lakefile.toml and lean-toolchain.

The artifact includes the following files:

• mech.tar.gz that includes documents (including README.md), proofs, and examples for this work
• image.tar.gz which is the Docker image (Ubuntu, amd64) containing the environment to evaluate mech.tar.gz (included).

1. Installation 

From Docker (need amd64 support):

  docker load -i image.tar.gz

Then enter the Docker environment:

  docker run -it --rm rtcheck:latest

Or, manually following the official guide. We require the Lean version v4.27.0.
The version control has already been set in `lakefile.toml` and `lean-toolchain`.

2. Build the Artifact

Within the Docker environment, execute:

  lake build

If you have Lean natively installed with VSCode, you can open the folder in VSCode.
Open Lean4/ChkExamples.lean (for example) and click Restart File from Lean4 menu bar.

3. Generate Data and Plot

The following command will take about 6 minutes,
print a table of data for Fig. 9a, and save the plots of Fig. 9b and 9c to data-{2,1}.pdf.
You can specify the option --fig-file fig-9-{}.pdf to override the plot filenames.

  python3 data.py

Update for Revision:

• The version of Lean has been updated from v4.14 to v4.27. However, reviewers should note no breaking change by using our updated Docker image or using elan/lake to natively manage the dependencies.
• Primitive support for pairs/lists has been added. They only service the evaluation in Section 5, and the plotting script has also been updated accordingly.
• Other refactoring changes.