 27 Oct, 2016 1 commit


Ralf Jung authored

 05 Oct, 2016 1 commit


Robbert Krebbers authored

 24 Aug, 2016 1 commit


Robbert Krebbers authored
This is allowed as long as one of the conjuncts is thrown away (i.e. is a wildcard _ in the introduction pattern). It corresponds to the principle of "external choice" in linear logic.

 05 Aug, 2016 2 commits


Robbert Krebbers authored
This better reflects the name of the bind rule. I renamed an internal tactic that was previously called wp_bind into wp_bind_core.

Robbert Krebbers authored
This commit features:  A simpler model. The recursive domain equation no longer involves a triple containing invariants, physical state and ghost state, but just ghost state. Invariants and physical state are encoded using (higherorder) ghost state.  (Primitive) view shifts are formalized in the logic and all properties about it are proven in the logic instead of the model. Instead, the core logic features only a notion of raw view shifts which internalizing performing frame preserving updates.  A better behaved notion of mask changing view shifts. In particular, we no longer have sideconditions on transitivity of view shifts, and we have a rule for introduction of mask changing view shifts ={E1,E2}=> P with E2 ⊆ E1 which allows to postpone performing a view shift.  The weakest precondition connective is formalized in the logic using Banach's fixpoint. All properties about the connective are proven in the logic instead of directly in the model.  Adequacy is proven in the logic and uses a primitive form of adequacy for uPred that only involves raw views shifts and laters. Some remarks:  I have removed binary view shifts. I did not see a way to describe all rules of the new mask changing view shifts using those.  There is no longer the need for the notion of "frame shifting assertions" and these are thus removed. The rules for Hoare triples are thus also stated in terms of primitive view shifts. TODO:  Maybe rename primitive view shift into something more sensible  Figure out a way to deal with closed proofs (see the commented out stuff in tests/heap_lang and tests/barrier_client).

 04 Aug, 2016 1 commit


Robbert Krebbers authored

 19 Jul, 2016 2 commits


Robbert Krebbers authored

Robbert Krebbers authored

 13 Jul, 2016 1 commit


JacquesHenri Jourdan authored

 30 Jun, 2016 2 commits


Robbert Krebbers authored

Robbert Krebbers authored
Concretely, when execution of any of the wp_ tactics does not yield another wp, it will make sure that a view shift is kept. This behavior was already partially there, but now it is hopefully more consistent.

 27 Jun, 2016 2 commits


Robbert Krebbers authored
We are now using the prefixes Into, From, and Is (the first two are inspired by the names of some traits in the Rust stdlib), and hopefully doing that consistenly.

Robbert Krebbers authored

 23 Jun, 2016 2 commits


Robbert Krebbers authored

Robbert Krebbers authored

 31 May, 2016 1 commit


Robbert Krebbers authored
be the same as
↔ . This is a fairly intrusive change, but at least makes notations more consistent, and often shorter because fewer parentheses are needed. Note that viewshifts already had the same precedence as →.

 27 May, 2016 1 commit


Robbert Krebbers authored

 10 May, 2016 6 commits


Robbert Krebbers authored

Robbert Krebbers authored
through definitions.

Robbert Krebbers authored

Robbert Krebbers authored

Robbert Krebbers authored
This is more consistent with wp_cas_fail.

Robbert Krebbers authored

 06 May, 2016 1 commit


Robbert Krebbers authored

 02 May, 2016 1 commit


Robbert Krebbers authored
iSpecialize and iDestruct. These tactics now all take an iTrm, which is a tuple consisting of a.) a lemma or name of a hypotheses b.) arguments to instantiate c.) a specialization pattern.

 21 Apr, 2016 1 commit


Ralf Jung authored

 20 Apr, 2016 2 commits


Robbert Krebbers authored

Ralf Jung authored

 19 Apr, 2016 1 commit


Robbert Krebbers authored
This gets rid of the (ambiguous) notation %l, because we can declare LitLoc as a coercion. It also shortens the code.

 11 Apr, 2016 1 commit


Robbert Krebbers authored
