GitLab

Finish proving the validRanges and validRangesCmd predicates and adding them to all other soundness proofs

Add explanation of isMorePrecise for fixed-points, rename M0 into REAL and remove unused import from Expressions.v

Refactor exp type into expr type because of name clash with new coq version, move ExpOrderedType module into separate file

Using this new typing, prove the stronger soundness statement, moving the evaluation to the conclusion of the theorems.

Typing of expressions is done. However, there are still some admits in the proofs, to be fixed in the following days.

Rework evaluation semantics to not be arguing about precondition, make this explicit in the theorem, that we assume it. Admitted proofs that are obvious

Rework Coq proofs, to get rid of specifying precondition validity for execution by adding this as a property of the semantics

Start working on supporting let statements. Therefore add environment simulation relation and prove preservation by small step semantics for it

for precondition checker, write composiing checker function and compose
soundness proofs into one theorem