potassco / potassco/constraint-handler

Brave/cautious reasoning for multi-literal values

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Dominant language
Python
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3
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0
Avg merge
1d 19h
Merged PRs (30d)
20

Description

Consider the following program.

set_declare(dummy,x).
set_assign(dummy,x,val(int,0)).
1 { set_assign(dummy,x,val(int,1..3)) } 1.

The brave model should contain 3 elements: x -> { 0,1 }, x -> { 0,2 }, x -> { 0,3 }, and it shouldn't contain (for example) x -> { 0,1, 2, 3 }.

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by locating the implementation and tests for brave/cautious reasoning and multi-literal set_assign values. Reproduce the program from the issue, then trace how the three selected literals are combined. Done means the brave models are exactly the three mappings shown, without a model containing all values 0, 1, 2, and 3.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
backend
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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