Alternative two-way reachability method #124
Merged
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
This updates the symbolic reachability procedure such that if a set of
avoid
states is provided, it will run both forward reachability from the attractor pivot and backward reachability from the avoid states interleaved with each other. Consequently, the avoid states often expand very quickly and we can find an intersection much faster.This solves a few extra benchmarks among the large random models (at the very least, NK2
n1280_3
andn2560_85
). It shouldn't really impact models where we don't end up using the symbolic reachability.