cs220/assets/why3/assignment05

Assignment 5: Program correctness and logic

• The primary goal of this assignment is to grasp basic concepts about proving a program's correctness with deductive reasoning.

• You should fill in TODOs in three files: max.mlw, binary_search.mlw, pascal.mlw.

• You may use Why3 in your browser.

  • Clicking Verify button at the top will open a panel on the right side.
  • For each task in the panel (e.g. loop invariant preservation), you can right-click it and run the prover.
  • Fill in TODOs until the prover can verify all tasks, notified with green check-marks.

• To submit your solution, run ./scripts/submit.sh and submit assignment05.zip in the target directory to gg.

• More on Why3: https://why3.lri.fr/doc/index.html

• Why3 standard library: https://why3.lri.fr/stdlib/index.html