 16 Feb, 2019 1 commit


Ralf Jung authored

 24 Jan, 2019 3 commits
 19 Jan, 2019 1 commit


Ralf Jung authored

 29 Oct, 2018 2 commits


JacquesHenri Jourdan authored

JacquesHenri Jourdan authored
We add a specific constructor to the type of expressions for injecting values in expressions. The advantage are :  Values can be assumed to be always closed when performing substitutions (even though they could contain free variables, but it turns out it does not cause any problem in the proofs in practice). This means that we no longer need the `Closed` typeclass and everything that comes with it (all the reflectionbased machinery contained in tactics.v is no longer necessary). I have not measured anything, but I guess this would have a significant performance impact.  There is only one constructor for values. As a result, the AsVal and IntoVal typeclasses are no longer necessary: an expression which is a value will always unify with `Val _`, and therefore lemmas can be stated using this constructor. Of course, this means that there are two ways of writing such a thing as "The pair of integers 1 and 2": Either by using the value constructor applied to the pair represented as a value, or by using the expression pair constructor. So we add reduction rules that transform reduced pair, injection and closure expressions into values. At first, this seems weird, because of the redundancy. But in fact, this has some meaning, since the machine migth actually be doing something to e.g., allocate the pair or the closure. These additional steps of computation show up in the proofs, and some additional wp_* tactics need to be called.

 13 Jul, 2018 5 commits
 02 Jul, 2018 1 commit


Ralf Jung authored

 30 Jun, 2018 1 commit


Ralf Jung authored

 28 Jun, 2018 1 commit


Ralf Jung authored
This restricts CAS to only be able to compare literals with literals, NONEV with NONEV and NONEV with SOMEV for a literal.

 12 Jun, 2018 1 commit


Ralf Jung authored

 04 Jun, 2018 5 commits


Ralf Jung authored

Ralf Jung authored

Ralf Jung authored
Show that atomic_step is an AccElim so we can open invariants; get entirely rid of the Em ⊆ Eo sidecondition

Ralf Jung authored

Ralf Jung authored
New atomic updates: defined as a fixed point with existential quantifier; intro lemma using class of Laterable assertions

 26 Apr, 2018 1 commit


Ralf Jung authored
New IntoAcc typeclass to decouple creating and elliminating accessors; ElimInv supports both with and without Hclose

 25 Apr, 2018 1 commit


Ralf Jung authored

 19 Mar, 2018 1 commit


Ralf Jung authored

 23 Feb, 2018 1 commit


Robbert Krebbers authored

 21 Feb, 2018 2 commits