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============ Long-term Roadmap (see below for roadmaps to next release) ===========
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== long-term projects ==
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* entiers machines

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* modules, raffinement (these de Leon)
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* support for higher-order

* extraction, more generally how to turn Why3 into a real programming language (these de Martin)

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* rapprocher la logique et les programmes
** variant dans la logique ?
** monter les fonctions de programmes pures dans la logique ?


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* internal interpreter, test of specifications, quickcheck

* BWare project, support for rewrite rules, improved support for provers,
  extensions of set theory and their Coq realizations.

* LABCOM avec Adacore
** calculs non-linéaires, calculs en virgule flottante
** production de contre-exemples de preuves solides et exprimés dans le langage d’origine
** support efficace des invariants de données
** développer des composants réutilisables prouvés.
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* jessie3

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== Papers to write ==
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  * paper on the module system, its semantics, realizations, avec en
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    particulier la solution avec les types classes
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  * DONE paper on the proof management system
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  * DONE Encodings and transformations (Andrei+Francois FroCos 11)
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  * DONE Why presentation at the IVL workshop of CADE:
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    (http://research.microsoft.com/en-us/um/people/moskal/boogie2011/)
    deadline: May 1st
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  * Caml code ?
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  * logic language for talking to provers
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    - DONE (Boogie 11)
    - DONE FOL + poly (FroCos 11)
    -  alg + ind + rec ? + theories
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  * VACID-0
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  * system description (e.g. at CADE, TACAS) DONE at ESOP

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  * rapports recherche ?
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== stages ==
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* M1. preuve d'un petit compilateur, pas de pb de lieur,
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   eventuellement outils pour les preuves par recurrence
   a la Leino, + fct size automatique
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  DONE (Stage M1 de Leon)
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* M2. Lieur en Why3, POPLmark challenge. vers
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   un theorie et/ou un module réutilisable de lieurs
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  DONE (Stage M2 de Martin)

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* (M2?) Stage Airbus, "TIP" avec Frama-C/Jessie ou WP/Why/Coq
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   besoin de la tactique Coq?
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== new major features ==
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* Logic language
 - support for higher-order logic
 - rename andb, orb, xorb and notb into and, or, xor and not

* more libraries (theories and modules)

* A true Jessie3 front-end

* Why3ML
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 - Fast WP a la Leino (DONE ?)
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 - assert qui ne donne pas une hypothese dans la suite -> "check"
   also: in a black box

* Add more examples in the regression tests and in the proval gallery

* A literate programming tool for Why3 (JCF)


* IDE:
 - edition, navigation (partially done)
 - saving session: add shortcut "ctrl-S", but beware of confusion with saving the input file
 - reimplement "hide proved goals" feature
  + suggested solution: replace model + filter_model by a custom model
  (JC + ?)
 - restore provers detection in the middle of a session.
 - commentaires dans les sessions, attachés a chaque ligne


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* Projets interessant Cesar ?
** Preuve de prog flottants avec Frama-C+WP+Why3+PVS
** Generation d'annotations
** porter multirounding a jessie->Why3. Completer le mode full et faire passer
   interval_arith.c. Completer la galerie
** preuve sur l'assembleur
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** support de Yices 2 ? interesserait Cesar

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==================== Roadmap for next releases ========================
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HighOrd: Coq output and OCaml extraction should produce lambda's from lambda's
and no epsilon

* terminaison
** generer une obligation de preuve de well-foundedness quand on utilise
   un variant avec "with R" (une seule fois pour chaque R !)
** quand une definition logique recursive ne peut pas etre verifiee
   bien-fondee statiquement, generer une obligation de preuve
   (feature wish de F Besson)

* Coq tactic
** ajout de bases de hint

* replayer
** deplacer option -bench dans une commande de why3session

* IDE
** todo: run detection immediately at start up if conf file absent or
    outdated. should become doable with the new Session module
** "detect provers" menu

* Contre-exemples de Alt-Ergo

* detect editors
*** check if coqide and also emacs/proof-general is installed

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* documentation des nouvelles features higher-order
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* eliminate_match:
** faire un cas particulier pour "bool", le match pouvant se traduire
   vers ite qui est supporté par pas mal de prouveurs
** introduire des symboles _match non polymorphes differents pour
   chaque instance necessaires. plutot qu'un seul symbole _match
   polymorphe.
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==================== Roadmap for release 0.86 ========================

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DATE : fin avril / début mai
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Release Notes (details in file CHANGES):

* Support for new provers or new versions of provers
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* Stdlib: new theories for sequences and bitvectors
* bug fixes
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== TODO ==

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* plusieurs drivers acceptés sur la ligne de commande (AP)

* determine which is the minumum version of Ocaml to compile, and then
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updated configure.in and the manual
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-> vérification compilation avec OCaml 3.12 -> Claude va le faire
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* solve issues with metitarski
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. DONE theory PowerReal
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. crashes when applied on a WP (see examples/my_cosine.mlw)

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* clean up the support for SMTLIB bitvectors: there are 2 theories in the stdlib: thoeries/bv.why and modules/bitvectors.mlw
-> not anymore, but more cleaning can be done: no need to separate all theories in drivers for Z3 and CVC4, since the same theory can be put several times in a driver (or imported sub-drivers)

* decide if GUI with tabs is convenient enough
-> onglets dans why3 ide : est-ce apprécié ? OUI
    mais enlever l'onglet "Counterexamples" avant la release

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== DONE ==

DONE * sauvegarde de la configuration : à quel endroit dans l'IDE ?
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-> Claude le met dans la fenetre preferences a cote du bouton "Close"

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* support for veriT recent
-> DONE: version 201410

* support for Yices2 recent
-> DONE: 2.3.0, but still does not support quantifiers
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== Final preparation ==

* faire une passe sur le BTS
* do "make update-coq" and "make", fix Coq realizations if needed
* check that nightly bench is OK
* check that "make xml-validate-local" is OK
  (see below : copy the dtd on the web)
* put 0.86 in file Version, and then run ./config.status
* check/update the content of the About dialog in src/ide/gconfig.ml
  around lines 550-600
* check headers
* check the file CHANGES, add the release date
* manual in PDF:
** update the date in doc/manual.tex (near \whyversion{})
** check that macro \todo is commented out in doc/macros.tex
** and then "make doc"
  (check that manual in HTML is also generated, doc/html/index.html)
* do "make dist"
* test distrib/why3-0.86.tar.gz
* put on the web page why3-0.86.tar.gz:
  cp distrib/why3-0.86.tar.gz /users/www-perso/projets/why3/download
* inform Jerry James <loganjerry@gmail.com> so that he can test the
  Fedora package
* install web page for why2 which includes an updated page for the
  quick migration guide. (sources are in CVS repository
  ~filliatr/ARCHIVE/www/why).
* move distrib from Why3 site to Inria forge:
** remove /users/www-perso/projets/why3/download/why3-0.86.tar.gz
** upload distrib/why3-0.86.tar.gz to https://gforge.inria.fr/frs/?group_id=2990
* put on the web page
 - the manual in PDF
   cp doc/manual.pdf /users/www-perso/projets/why3/download/manual-0.86.pdf

 - the HTML version of the manual (content of doc/html)
   cp -r doc/html /users/www-perso/projets/why3/doc-0.86

 - why3session.dtd
   cp -f share/why3session.dtd /users/www-perso/projets/why3/

 - standard library online, using why3doc, to http://why3.lri.fr/stdlib/
   make stdlibdoc
   cp -r doc/stdlibdoc /users/www-perso/projets/why3/stdlib-0.86
   rm /users/www-perso/projets/why3/stdlib
   ln -s /users/www-perso/projets/why3/stdlib-0.86 \
            /users/www-perso/projets/why3/stdlib
 - API doc, produced using ocamldoc, to http://why3.lri.fr/api/
    make apidoc
    cp -r doc/apidoc /users/www-perso/projets/why3/api-0.86
    rm /users/www-perso/projets/why3/api
    ln -s /users/www-perso/projets/why3/api-0.86 \
      /users/www-perso/projets/why3/api

 - update the main HTML page (sources are in repository why3-www)
   edit index.html
   make (to check validity)
   make export

 - add links to extra resources like
   http://why3.lri.fr/jfla-2012/, http://www.lri.fr/~marche/MPRI-2-36-1/,
   page du cours de l'X (in french ? using Krakatoa/why3 bridge)

 - make everything writeable for the group
   chmod -R g+w /users/www-perso/projets/why3

* prepare for the OPAM package

. update opam/url: url and checksum of why-0.86.tar.gz
   (use "md5sum distrib/why3-0.86.tar.gz")
. update opam/descr if necessary
. update opam/opam with correct dependencies and such

* make a last commit:
 - git commit -am "release 0.86"
 - add tag 0.86 to the git repository, using
   git tag 0.86
 - do not forget to push it using
   git push
   git push --tags

* add a new version to the bugtracker:
  https://gforge.inria.fr/tracker/admin/?group_id=2990&atid=10293&add_extrafield=1


* test the OPAM package

  . with opam 1.2:
    opam pin add why3 --kind=git <...>/why3/.git
    (it runs "opam install why3")
  . with opam < 1.2:

    - first step: have a local copy of opam-repository if not done yet, e.g.:

        git clone git@github.com:claudemarche/opam-repository.git
        cd opam-repository/
        git remote add opam https://github.com/ocaml/opam-repository.git

      or, if you already have one, make sure it is up-to-date:

        git fetch opam
        git reset --hard opam/master
        git push

    - second step: copy why3 opam files into it :

      cd packages/why3
      cp -r <source why3>/opam why3.0.86

    - second step:

      opam repository add local <...>/opam-repository
      opam install why3
      (* test it, e.g.
         cp example/quicksort.mlw ~/tmp
         why3 ide ~/tmp/quicksort.mlw *)
      opam remove why3
      opam repository remove local


* make a pull request on OPAM

  git add why3.0.86
  git commit -am "new package version why3 0.86"
  git push
  sur github: creer un pull request

* produce the Why3 part of Toccata gallery
  -> add also a tar.gz and a ZIP file of it (this is done by doing
  "make gallery-files" in the sources of the Toccata web pages)
* Announce the distrib
 - What to put in the announcement: see New Features above
* The next commit : add +git to the version in file Version


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==================== Roadmap for release 0.85 ========================

Release Notes:

Mainly a bug-fix release, in particular to fix two soundness bugs

See CHANGES

== Final preparation ==

* faire une passe sur le BTS
* do "make update-coq" and "make", fix Coq realizations if needed
* check that nightly bench is OK
* check that "make xml-validate-local" is OK
  (see below : copy the dtd on the web)
* put 0.85 in file Version, and then run ./config.status
* check/update the content of the About dialog in src/ide/gconfig.ml
  around lines 550-600
* check headers
* check the file CHANGES, add the release date
* manual in PDF:
** update the date in doc/manual.tex (near \whyversion{})
** check that macro \todo is commented out in doc/macros.tex
** and then "make doc"
  (check that manual in HTML is also generated, doc/html/index.html)
* do "make dist"
* test distrib/why3-0.85.tar.gz
* put on the web page why3-0.85.tar.gz:
  cp distrib/why3-0.85.tar.gz /users/www-perso/projets/why3/download
* inform Jerry James <loganjerry@gmail.com> so that he can test the
  Fedora package
* install web page for why2 which includes an updated page for the
  quick migration guide. (sources are in CVS repository
  ~filliatr/ARCHIVE/www/why).
* move distrib from Why3 site to Inria forge:
** remove /users/www-perso/projets/why3/download/why3-0.85.tar.gz
** upload distrib/why3-0.85.tar.gz to https://gforge.inria.fr/frs/?group_id=2990
* put on the web page
 - the manual in PDF
   cp doc/manual.pdf /users/www-perso/projets/why3/download/manual-0.85.pdf

 - the HTML version of the manual (content of doc/html)
   cp -r doc/html /users/www-perso/projets/why3/doc-0.85

 - why3session.dtd
   cp -f share/why3session.dtd /users/www-perso/projets/why3/

 - standard library online, using why3doc, to http://why3.lri.fr/stdlib/
   make stdlibdoc
   cp -r doc/stdlibdoc /users/www-perso/projets/why3/stdlib-0.85
   rm /users/www-perso/projets/why3/stdlib
   ln -s /users/www-perso/projets/why3/stdlib-0.85 \
            /users/www-perso/projets/why3/stdlib
 - API doc, produced using ocamldoc, to http://why3.lri.fr/api/
    make apidoc
    cp -r doc/apidoc /users/www-perso/projets/why3/api-0.85
    rm /users/www-perso/projets/why3/api
    ln -s /users/www-perso/projets/why3/api-0.85 \
      /users/www-perso/projets/why3/api

 - update the main HTML page (sources are in repository why3-www)
   edit index.html
   make (to check validity)
   make export

 - add links to extra resources like
   http://why3.lri.fr/jfla-2012/, http://www.lri.fr/~marche/MPRI-2-36-1/,
   page du cours de l'X (in french ? using Krakatoa/why3 bridge)

 - make everything writeable for the group
   chmod -R g+w /users/www-perso/projets/why3

* prepare for the OPAM package

. update opam/url: url and checksum of why-0.85.tar.gz
   (use "md5sum distrib/why3-0.85.tar.gz")
. update opam/descr if necessary
. update opam/opam with correct dependencies and such

* make a last commit:
 - git commit -am "release 0.85"
 - add tag 0.85 to the git repository, using
   git tag 0.85
 - do not forget to push it using
   git push
   git push --tags

* add a new version to the bugtracker:
  https://gforge.inria.fr/tracker/admin/?group_id=2990&atid=10293&add_extrafield=1


* test the OPAM package

  . with opam 1.2:
    opam pin add why3 --kind=git <...>/why3/.git
    (it runs "opam install why3")
  . with opam < 1.2:

    - first step: have a local copy of opam-repository if not done yet, e.g.:

        git clone git@github.com:claudemarche/opam-repository.git
        cd opam-repository/
        git remote add opam https://github.com/ocaml/opam-repository.git

      or, if you already have one, make sure it is up-to-date:

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        git fetch opam
        git reset --hard opam/master
        git push
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    - second step: copy why3 opam files into it :

      cd packages/why3
      cp -r <source why3>/opam why3.0.85

    - second step:

      opam repository add local <...>/opam-repository
      opam install why3
      (* test it, e.g.
         cp example/quicksort.mlw ~/tmp
         why3 ide ~/tmp/quicksort.mlw *)
      opam remove why3
      opam repository remove local


* make a pull request on OPAM

  git add why3.0.85
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  git commit -am "new package version why3 0.85"
  git push
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  sur github: creer un pull request

* produce the Why3 part of Toccata gallery
  -> add also a tar.gz and a ZIP file of it (this is done by doing
  "make gallery-files" in the sources of the Toccata web pages)
* Announce the distrib
 - What to put in the announcement: see New Features above
* The next commit : add +git to the version in file Version


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==================== Roadmap for release 0.84 ========================
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== TODOs ==

* verifier support des nouveaux prouveurs: Coq8.4pl4, Isabelle-2014,
  CVC4 1.4, yices2 (quantifiers ?)  beagle ? driver TPTP TFA ? autres ?

* completer le fichier CHANGES
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** nouvelle facon d'appeler les outils "why3 xxx ..." DONE
** strategies de preuve, NO for next release only
** transformation "compute_in_goal", DONE, but rewrite rules not documented
** support de nouveaux prouveurs, DONE
** nouvelle structure des fichiers de session et de shape (compatibilité), DONE
** new examples ? BOF
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* ajouter dans les instructions de release ci-dessous la procedure de
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  fabrication du paquet opam DONE
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== New Features to announce ==

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Release Notes:

A major visible change in this release is the way Why3 commands are
invoked: instead of several executables why3, why3config, why3ide,
why3replay, why3session, etc., there is only one Why3 executable
called why3, and the former executables are available as commands given
as first argument, e.g. "why3 config", "why3 ide", etc.

Another quite visible change is that session files are split in two
parts, as detailed below in the detailed changes.

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See CHANGES
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== Final preparation ==

* faire une passe sur le BTS
* do "make update-coq" and "make", fix Coq realizations if needed
* check that nightly bench is OK
* check that "make xml-validate-local" is OK
  (see below : copy the dtd on the web)
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* put 0.84 in file Version, and then run ./config.status
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* check/update the content of the About dialog in src/ide/gconfig.ml
  around lines 550-600
* check headers
* check the file CHANGES, add the release date
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* manual in PDF:
** update the date in doc/manual.tex (near \whyversion{})
** check that macro \todo is commented out in doc/macros.tex
** and then "make doc"
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  (check that manual in HTML is also generated, doc/html/index.html)
* do "make dist"
* test distrib/why3-0.84.tar.gz
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* put on the web page why3-0.84.tar.gz:
  cp distrib/why3-0.84.tar.gz /users/www-perso/projets/why3/download
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* inform Jerry James <loganjerry@gmail.com> so that he can test the
  Fedora package
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* install web page for why2 which includes an updated page for the
  quick migration guide. (sources are in CVS repository
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  ~filliatr/ARCHIVE/www/why).
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* move distrib from Why3 site to Inria forge:
** remove /users/www-perso/projets/why3/download/why3-0.84.tar.gz
** upload distrib/why3-0.84.tar.gz to https://gforge.inria.fr/frs/?group_id=2990
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* put on the web page
 - the manual in PDF
   cp doc/manual.pdf /users/www-perso/projets/why3/download/manual-0.84.pdf

 - the HTML version of the manual (content of doc/html)
   cp -r doc/html /users/www-perso/projets/why3/doc-0.84

 - why3session.dtd
   cp share/why3session.dtd /users/www-perso/projets/why3/

 - standard library online, using why3doc, to http://why3.lri.fr/stdlib/
   make stdlibdoc
   cp -r doc/stdlibdoc /users/www-perso/projets/why3/stdlib-0.84
   rm /users/www-perso/projets/why3/stdlib
   ln -s /users/www-perso/projets/why3/stdlib-0.84 \
            /users/www-perso/projets/why3/stdlib
 - API doc, produced using ocamldoc, to http://why3.lri.fr/api/
    make apidoc
    cp -r doc/apidoc /users/www-perso/projets/why3/api-0.84
    rm /users/www-perso/projets/why3/api
    ln -s /users/www-perso/projets/why3/api-0.84 \
      /users/www-perso/projets/why3/api
   (PROBLEME avec style.css ? Ou est le probleme ?)

 - update the main HTML page (sources are in repository why3-www)
   edit index.html
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   make (to check validity)
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   make export
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 - add links to extra resources like
   http://why3.lri.fr/jfla-2012/, http://www.lri.fr/~marche/MPRI-2-36-1/,
   page du cours de l'X (in french ? using Krakatoa/why3 bridge)
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 - make everything writeable for the group
   chmod -R g+w /users/www-perso/projets/why3
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* prepare for the OPAM package

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. update opam/url: url and checksum of why-0.84.tar.gz
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   (use "md5sum distrib/why3-0.84.tar.gz")
. update opam/descr if necessary
. update opam/opam with correct dependencies and such

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* make a last commit:
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 - git commit -am "release 0.84"
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 - add tag 0.84 to the git repository, using
   git tag 0.84
 - do not forget to push it using
   git push
   git push --tags
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* add a new version to the bugtracker:
  https://gforge.inria.fr/tracker/admin/?group_id=2990&atid=10293&add_extrafield=1

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* test the OPAM package

  . with opam 1.2:
    opam pin add why3 --kind=git <...>/why3/.git
    (it runs "opam install why3")
  . with opam < 1.2:
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    - first step: have a local copy of opam-repository if not done yet, e.g.:

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        git clone git@github.com:claudemarche/opam-repository.git
        cd opam-repository/
        git remote add opam https://github.com/ocaml/opam-repository.git
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      or, if you already have one, make sure it is up-to-date:

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        git pull --ff-only opam master

    - second step: copy why3 opam files into it :

      cd packages/why3
      cp -r <source why3>/opam why3.0.84
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    - second step:
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      opam repository add local <...>/opam-repository
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      opam install why3
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      (* test it, e.g.
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         cp example/quicksort.mlw ~/tmp
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         why3 ide ~/tmp/quicksort.mlw *)
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      opam remove why3
      opam repository remove local


* make a pull request on OPAM

  git add why3.0.84
  commit et push
  sur github: creer un pull request

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* produce the Why3 part of Toccata gallery
  -> add also a tar.gz and a ZIP file of it (this is done by doing
  "make gallery-files" in the sources of the Toccata web pages)
* Announce the distrib
 - What to put in the announcement: see New Features above
* The next commit : add +git to the version in file Version
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==================== Roadmap for release 0.83 ========================

== New Features to announce ==

See CHANGES
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== Final preparation ==

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* inform Jerry James <loganjerry@gmail.com> so that he can test the
  Fedora package
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* faire une passe sur le BTS
* do "make update-coq" and "make", fix Coq realizations if needed
* check that nightly bench is OK
* check that "make xml-validate-local" is OK
  (see below : copy the dtd on the web)
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* put 0.83 in file Version
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* check/update the content of the About dialog in src/ide/gconfig.ml
  around lines 550-600
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* check headers
* check the file CHANGES, add the release date
* manual in PDF: check that macro \todo is commented out
    in ./macros.tex, and then "make doc"
  (check that manual in HTML is also generated, doc/html/index.html)
* do "make dist"
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* test distrib/why3-0.83.tar.gz
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* install web page for why2 which includes an updated page for the
  quick migration guide. (sources are in CVS repository
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  ~filliatr/ARCHIVE/www/why). ADD a colon on new syntax for 0.83. Change Proval into Toccata
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* put on the web page
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 - why3-0.83.tar.gz
   cp distrib/why3-0.83.tar.gz /users/www-perso/projets/why3/download
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 - the manual in PDF
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   cp doc/manual.pdf /users/www-perso/projets/why3/download/manual-0.83.pdf
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 - the HTML version of the manual (content of doc/html)
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   cp -r doc/html /users/www-perso/projets/why3/doc-0.83
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 - why3session.dtd
   cp share/why3session.dtd /users/www-perso/projets/why3/

 - standard library online, using why3doc, to http://why3.lri.fr/stdlib/
   make stdlibdoc
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   cp -r doc/stdlibdoc /users/www-perso/projets/why3/stdlib-0.83
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   rm /users/www-perso/projets/why3/stdlib
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   ln -s /users/www-perso/projets/why3/stdlib-0.83 \
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            /users/www-perso/projets/why3/stdlib
 - API doc, produced using ocamldoc, to http://why3.lri.fr/api/
    make apidoc
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    cp -r doc/apidoc /users/www-perso/projets/why3/api-0.83
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    rm /users/www-perso/projets/why3/api
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    ln -s /users/www-perso/projets/why3/api-0.83 \
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      /users/www-perso/projets/why3/api
   (PROBLEME avec style.css ? Ou est le probleme ?)
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 - update the main HTML page (sources are in repository why3-www)
   edit index.html
   make export

 - add links to extra resources like
   http://why3.lri.fr/jfla-2012/, http://www.lri.fr/~marche/MPRI-2-36-1/,
   page du cours de l'X (in french ? using Krakatoa/why3 bridge)

 - make everything writeable for the group
   chmod -R g+w /users/www-perso/projets/why3

* make a last commit:
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 - git commit -m "release 0.83"
 - add tag 0.83 to the git repository, using
   git tag 0.83
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 - do not forget to push it using
   git push
   git push --tags

* add a new version to the bugtracker:
  https://gforge.inria.fr/tracker/admin/?group_id=2990&atid=10293&add_extrafield=1

* produce the Why3 part of Toccata gallery
  -> add also a tar.gz and a ZIP file of it (this is done by doing
  "make gallery-files" in the sources of the Toccata web pages)
* Announce the distrib
 - What to put in the announcement: see New Features above
* The next commit : add +git to the version in file Version


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== TODOs ==

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* DONE replayer: replay should be considered failed if new goals appeared.
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* DONE ? fix problems with installed scripts that are missing a proper executable right (mails Frederic Boulanger)
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* Isabelle Support:
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** DONE ? fix the problem with why3_jedit script missing executable bit
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** DONE add a documentation: start "isabelle why3_jedit" before why3ide, use "Close C-w" to signal the end of edit to why3"
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* extraction vers Caml
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** DONE utiliser ZArith
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==================== Roadmap for release 0.82 ========================
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Scheduled for 9 december 2013
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== New Features to announce ==

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* input language
** lemma functions
** polymorphic recursion permitted
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** types "opaques" TODO ???
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* new provers:
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** veriT 201310
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** Metitarski 2.2 (contribution by Piotr Trojanek)
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** Metis 2.3
** Beagle 0.4.1
** Princess 2013-05-13
** Yices2 2.0.4
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** Isabelle 2013-2 (contribution by Stefan Berghofer)
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* new versions of provers:
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** Alt-Ergo 0.95.2
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** CVC4 1.1 & 1.2 & 1.3
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** Coq 8.4pl2
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** gappa 1.0.0
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** SPASS 3.8ds

* API: more examples of use in  examples/use_api/
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* emacs support: why.el renamed into why3.el
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* why3session
** --stats: changed (detailler, temps, distinction root et subgoals, CLAUDE)

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* bug fixes:
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** remove extra leading zeros in decimal literals when a prover don't like them
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** PVS output: types are always non-empty
** PVS: fixed configuration and installation process
** improved shape mecanism for session updates (see VSTTE'13 paper).
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  Compatibility with session files from version 0.81 and earlier is
  assured.
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** Coq tactic: now loads dynamic plug-ins
** Coq output: fixed printing of polymorphic recursive datatypes
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** bug #15493: correct Coq output for polymorphic algebraic data types
** wish #15053: Remove proof time from "Goals proved by only one prover" section of why3session info --stats
** bug #13736: why3ml was slow when there are many inclusions
** bug #16488: decimals in TPTP syntax
** bug #16454: do not send arithmetic triggers anymore to alt-Ergo
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** syntax highlighting bugs: should be fixed by removing the old language
   file alt-ergo.lang from alt-ergo distribution
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== Final preparation ==

* faire une passe sur le BTS
* do "make update-coq" and "make", fix Coq realizations if needed
* check that nightly bench is OK
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* check that "make xml-validate-local" is OK
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  (see below : copy the dtd on the web)
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* put 0.82 in file Version
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* check headers
* check the file CHANGES, add the release date
* manual in PDF: check that macro \todo is commented out
    in ./macros.tex, and then "make doc"
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  (check that manual in HTML is also generated, doc/html/index.html)
* do "make dist"
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* test distrib/why3-0.82.tar.gz
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* install web page for why2 which includes an updated page for the
  quick migration guide. (sources are in CVS repository
  ~filliatr/ARCHIVE/www/why)
* put on the web page
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 - why3-0.82.tar.gz
   cp distrib/why3-0.82.tar.gz /users/www-perso/projets/why3/download
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 - the manual in PDF
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   cp doc/manual.pdf /users/www-perso/projets/why3/download/manual-0.82.pdf
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 - the HTML version of the manual (content of doc/html)
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   cp -r doc/html /users/www-perso/projets/why3/doc-0.82
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 - why3session.dtd
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   cp share/why3session.dtd /users/www-perso/projets/why3/

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 - standard library online, using why3doc, to http://why3.lri.fr/stdlib/
   make stdlibdoc
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   cp -r doc/stdlibdoc /users/www-perso/projets/why3/stdlib-0.82
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   rm /users/www-perso/projets/why3/stdlib
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   ln -s /users/www-perso/projets/why3/stdlib-0.82 \
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            /users/www-perso/projets/why3/stdlib
 - API doc, produced using ocamldoc, to http://why3.lri.fr/api/
    make apidoc
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    cp -r doc/apidoc /users/www-perso/projets/why3/api-0.82
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    rm /users/www-perso/projets/why3/api
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    ln -s /users/www-perso/projets/why3/api-0.82 \
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      /users/www-perso/projets/why3/api
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   (PROBLEME avec style.css ? Ou est le probleme ?)
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 - update the main HTML page (sources are in repository why3-www)
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   edit index.html
   make export

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 - add links to extra resources like
   http://why3.lri.fr/jfla-2012/, http://www.lri.fr/~marche/MPRI-2-36-1/,
   page du cours de l'X (in french ? using Krakatoa/why3 bridge)

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 - make everything writeable for the group
   chmod -R g+w /users/www-perso/projets/why3

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* make a last commit:
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 - git commit -m "release 0.82"
 - add tag 0.82 to the git repository, using
   git tag 0.82
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 - do not forget to push it using
   git push
   git push --tags

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* add a new version to the bugtracker:
  https://gforge.inria.fr/tracker/admin/?group_id=2990&atid=10293&add_extrafield=1
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* produce the Why3 part of Toccata gallery
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  -> add also a tar.gz and a ZIP file of it (this is done by doing
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  "make gallery-files" in the sources of the Toccata web pages)
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* Announce the distrib
 - What to put in the announcement: see New Features above
* The next commit : add +git to the version in file Version

== TODOs ==

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* DONE Patch de johannes pour les noms de fichier pour Isabelle
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* DONE discriminate, mettre les bons arguments par defaut (ANDREI)
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* DONE efficiency issues
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** understand problems when large number of goals (cf D Mentré examples)
** prouveur de Martin
** tester avant la release sur
*** BWare
*** Prouveur de Martin
*** examples de Frama-C/Jessie et Krakatoa
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* DONE Coq detection (et PVS) (CLAUDE, champ supplementaire compile_support = yes dans le prover-detection-data)
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** refuser de detecter Coq si on n'a pas compilé avec le support de Coq
   (i.e. si Coq a ete installé apres)

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* Coq tactic (CLAUDE, GUILLAUME, JCF, ANDREI)
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** DONE bug Prod(_,_,_) -> traiter le cas
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* Smoke detector and absurd: on pourrait mettre un label particulier
  sur le "false" genéré par absurd, pour indiquer que c'est
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  intentionel que l'on veuille prouver false. FAIT
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  Un tel cas pourrait etre
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  traité de facon speciale par le smoke detector avec option "deep",
  pour eviter une fausse alarme.
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  PAS FAIT
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* faire le menage dans les transformations d'induction : _int _ty
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  _ty_lex, FAIT et documenter PAS FAIT
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* Documentation
 - (ANDREI) make the glossary available
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 - (CLAUDE) complete api.tex: explain how to build/apply
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   transformations, write new functions on terms
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 - LEON: add a section "further reading"

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* DONE bug fix: 16454 (ne pas envoyer des triggers arithmetiques) (GUILLAUME)
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* DONE bug fix: 15652 (ghost code detection)
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* support for new provers
** Alt-Ergo 0.95.2 DONE
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** CVC4 1.2 DONE: pb avec les booleens
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** DONE Coq 8.4pl2: probleme tactique Why3
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** DONE Metitarski: improve it (CLAUDE, GUILLAUME)
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* DONE simplification de (a && false) ne devrait pas etre false
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==================== Roadmap for release 0.81 ========================

released on March 25th, 2013

== New Features to announce ==

  o [logic] accept type expressions in clone substitutions
  o [whyml] support for relation chains (e.g., "e1 = e2 < e3")
  * [whyml] every exception raised in a function must be listed
    in as "raises { ... }" clause. A postcondition may be omitted
    and equals to "true" by default.
  * [whyml] if a function definition contains a "writes { ... }"
    clause, then every write effect must be listed. If a function
    definition contains a "reads { ... }" clause, then every read
    _and_ write effect must be listed.
  * [drivers] syntax rules, metas, and preludes are inherited
    through cloning. Keyword "cloned" becomes unnecessary and
    is not accepted anymore.
  o [why3ide] allow several files on the command-line
  o [ocaml API] incompatible changes in Set/Map/Hashtbl modules
  o [ocaml API] examples in the manual extended to API for Why3ml programs
  o [stdlib] fixed inconsistency in map.MapPermut theory
  o [prover] fixed Coq 8.4 support for theory real.Trigonometry
  o [prover] support for Gappa up to 0.16.6
  o [prover] support for Z3 4.2, 4.3.*
  o [prover] support for Alt-Ergo 0.95.1
  o [prover] support for CVC4
  o [prover] support for PVS 6
  o [prover] experimental support for mathematica
  o [prover] experimental support for MathSAT5
  o [examples] several new examples, including solutions to the
    VerifyThis@fm2012 challenges

== Final preparation ==

* faire une passe sur le BTS
* do "make update-coq" and "make", fix Coq realizations if needed
* check that nightly bench is OK
* check that "make xml-validate" is OK
  (see below : copy the dtd on the web)
* put 0.81 in file Version
* check headers
* check the file CHANGES, add the release date
* manual in PDF: check that macro \todo is commented out
    in ./macros.tex, and then "make doc"
* manual in HTML: "make doc/html/index.html"
* do "make distrib"
* test distrib/why3-0.81.tar.gz
* install web page for why2 which includes an updated page for the
  quick migration guide. (sources are in CVS repository
  ~filliatr/ARCHIVE/www/why)
* put on the web page
 - why3-0.81.tar.gz
   cp distrib/why3-0.81.tar.gz /users/www-perso/projets/why3/download

 - the manual in PDF
   cp doc/manual.pdf /users/www-perso/projets/why3/download/manual-0.81.pdf

 - the HTML version of the manual (content of doc/html)
   cp -r doc/html /users/www-perso/projets/why3/doc-0.81

 - why3session.dtd
   cp share/why3session.dtd /users/www-perso/projets/why3/

 - standard library online, using why3doc, to http://why3.lri.fr/stdlib/
   make stdlibdoc
   cp -r doc/stdlibdoc /users/www-perso/projets/why3/stdlib-0.81
   rm /users/www-perso/projets/why3/stdlib
   ln -s /users/www-perso/projets/why3/stdlib-0.81 \
            /users/www-perso/projets/why3/stdlib
 - API doc, produced using ocamldoc, to http://why3.lri.fr/api/
    make apidoc
    cp -r doc/apidoc /users/www-perso/projets/why3/api-0.81
    rm /users/www-perso/projets/why3/api
    ln -s /users/www-perso/projets/why3/api-0.81 \
      /users/www-perso/projets/why3/api
   PROBLEME avec style.css
 - update the main HTML page (sources are in repository why3-www)
   edit index.html
   make export

 - add links to extra resources like
   http://why3.lri.fr/jfla-2012/, http://www.lri.fr/~marche/MPRI-2-36-1/,
   page du cours de l'X (in french ? using Krakatoa/why3 bridge)

 - make everything writeable for the group
   chmod -R g+w /users/www-perso/projets/why3

* make a last commit:
 - git commit -m "release 0.81"
 - add tag 0.81 to the git repository, using
   git tag 0.81
 - do not forget to push it using
   git push
   git push --tags

* add a new version to the bugtracker:
  https://gforge.inria.fr/tracker/admin/?group_id=2990&atid=10293&add_extrafield=1

* produce the Why3 part of Toccata gallery
  -> add also a tar.gz and a ZIP file of it (this is done by doing
  "make gallery-files" in the sources of the Toccata web pages)
* Announce the distrib
 - What to put in the announcement: see New Features above
* The next commit : add +git to the version in file Version

== TODOs ==

* extraction vers Caml
 - PRIORITAIRE, JCF, ANDREI

* Documentation
 - (CLAUDE) complete api.tex: explain how to build theories


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==================== Roadmap for release 0.80 ========================

Change in programs' input syntax deserves incrementing version to 0.80
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scheduled on Oct 2012
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== New Features to announce ==

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Programs:
  o new concrete syntax for programs
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  o new API for programs
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  o type invariants
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  o ghost code
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Transformations:
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  o induction (experimental, undocumented)
  o bisection (experimental, undocumented)
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Provers support:
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  o support for Coq 8.4
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  o dropped support for Coq 8.2
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  o support for forthcoming PVS 6.0, including realizations
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  o support for iProver and Zenon
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Misc:
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  o improved output of "why3session latex"
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    (incompatible changes in LaTeX macros)
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  o [replayer] new option -q for running quietly
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  o a warning is emitted for unused bound logic variables in "forall",
    "exists" and "let"
  o a warning is emitted for any occurrence of a formula of the form
    "exists x, P -> Q". Formulas of this form are usually a user
    mistake. If this is intended, one can write "exists x, not P \/ Q"
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    instead
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Bug fixes:
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  o Coq output uses type classes to ensure Why3 types are inhabited
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  o fixed bug on merging config files which prevented the use
    of Why3 back-end of the Frama-C/Jessie plugin when Coq is
    not installed. (Bug 14672 of the Bug Tracking System)
  o fixed bugs 13503 and 13375 of the Bug Tracking System
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== Final preparation ==

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* faire une passe sur le BTS
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* do "make update-coq" and "make", fix Coq realizations if needed
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* check that nightly bench is OK
* check that "make xml-validate" is OK
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  (see below : copy the dtd on the web)
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* put 0.80 in file Version
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* check headers
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* check the file CHANGES, add the release date
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* manual in PDF: check that macro \todo is commented out
    in ./macros.tex, and then "make doc"
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* manual in HTML: "make doc/html/index.html"
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* do "make distrib"
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* test the distrib why3-0.80.tar.gz
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* make a last commit:
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 - add tag 0.80 to the git repository, using git tag 0.80
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 - do not forget to push it using git push --tags
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* install web page for why2 which includes an updated page for the
  quick migration guide. (sources are in CVS repository
  ~filliatr/ARCHIVE/www/why)
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* put on the web page
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 - why3-0.80.tar.gz
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 - the HTML version of the manual (content of doc/html)
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 - why3session.dtd
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 - standard library online, using why3doc, to http://why3.lri.fr/stdlib/
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   make stdlibdoc
   cp -r doc/stdlibdoc /users/www-perso/projets/why3/stdlib-0.80
   rm /users/www-perso/projets/why3/stdlib)
   ln -s /users/www-perso/projets/why3/stdlib-0.80 \
            /users/www-perso/projets/why3/stdlib
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 - API doc, produced using ocamldoc, to http://why3.lri.fr/api/
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    make apidoc
    cp -r doc/apidoc /users/www-perso/projets/why3/api-0.80
    rm /users/www-perso/projets/why3/api
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    ln -s /users/www-perso/projets/why3/api-0.80 \
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      /users/www-perso/projets/why3/api
   PROBLEME avec style.css
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 - update the main HTML page (sources are in why3-papers/www)

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* produce the Why3 part of ProVal gallery
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  -> add also a tar.gz and a ZIP file of it (this is done by doing
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  "make gallery-files" in the sources of the web pages)
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* Announce the distrib
 - What to put in the announcement: see New Features above
* The next commit : add +git to the version in file Version

== TODOs ==

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* DONE (JCF) reject global "val"s in typing environment for logic decls.
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* DONE appliquer les changements de syntaxe des programmes dans la doc : aussi bien dans le tutorial que dans la BNF des manpages
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* DONE Sortie PVS, avec mecanisme de realization
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* DONE mettre au propre les loc des fichiers de sessions, en particulier
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  les noms de fichiers doivent etre relatifs au fichier de session
  lui-meme. Utiliser Sysutil.relativize_filename a bon escient.
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* DONE sessions: mettre la dtd sur le web et changer l'entête des sessions pour qu'elles
   pointent dessus
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* DONE (PRIORITAIRE) Coq output
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 - corriger l'incoherence, comprendre si on veut vraiment accepter

  function x : 'a
  (cf: en caml cela ne marche pas)
 Solution proposee: utiliser des types classes, en particulier Inhabited

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* DONE (PRIORITAIRE), JCF et ANDREI, clone de module
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 - demarche: ecrire une API avec smart constructors garantissant
   le bon typage, et clone sera en premier lieu un de ces constructors
 - cas d'utilisation: range d'entiers de Jessie, Flottants -> double ou single
   containeurs pour Adacore et Claire
 - NON PRIORITAIRE ?
  + regions : strong update
  + ghost code
  + logic symbols used in programs






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==================== Roadmap for release 0.73 ========================

== New Features to announce ==

New features:
  o [Why3ml] new construct "abstract e { q }"
  o [Coq output] default tactic is now "intros ..." with a pattern
    that matches the structure of the goal
  o [why3replayer] option -obsolete-only
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  o co-inductive predicates
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  o new option -e for "why3session latex" allows to specify when to
    split tables in parts
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  o [Sessions] a small change in the format. This hopefully improves
    the association of old goals and new goals when the input is
    modified.  For compatibility, Why3 is still able to read session
    files in the old format.
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  o [Provers] support for Z3 4.0
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Bug fix:
  o completed support for the "Out Of Memory" prover result
  o [Coq output] quotes in identifiers remain quotes in Coq
  o workaround for a bug about modulo operator in Alt-Ergo 0.94
  o fixed a consistency issue with set.Fset theory


== Final preparation ==

* check that nightly bench is OK
* put 0.73 in file Version
* check headers
* check the file CHANGES
* manual in PDF: check that macro \todo is commented out
    in ./macros.tex
* do "make distrib"
* test the distrib why3-0.73.tar.gz
* make a last commit:
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 - add tag 0.73 to the git repository
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 - do not forget to push it using git push --tags

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* put on the web page
 - why3-0.73.tar.gz
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 - standard library online, using why3doc, to http://why3.lri.fr/stdlib/
   (make stdlibdoc ;
    cp -r doc/stdlibdoc /users/www-perso/projets/why3/stdlib-0.73;
    ln -s /users/www-perso/projets/why3/stdlib-0.73 \
            /users/www-perso/projets/why3/stdlib)
 - API doc, produced using ocamldoc, to http://why3.lri.fr/api/
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    Note: check that URL of API doc is correct in doc/api.tex line 9.
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     (make apidoc ;
    cp -r doc/apidoc /users/www-perso/projets/why3/api-0.73;
    ln -s /users/www-perso/projets/why3/api-0.73 \
            /users/www-perso/projets/why3/api    )
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 - update the main HTML page (sources are in why3-papers/www)

* produce the Why3 part of ProVal gallery ?
* Announce the distrib
 - What to put in the announcement: see New Features above
* The next commit : add +git to the version in file Version

== TODOs ==

* DONE Ajouter un result de prouveur "outofmemory" analogue a "timeout"

* Why3ML new language constructs
** NOT NEEDED ANYMORE sandbox
** DONE abstract e { q }
** DELAYED contract e { q }

* replayer
** DONE option pour ne rejouer que si obsolete

* Documentation
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 - DELAYED document co-inductive predicates
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 - DONE (CLAUDE) revoir documentation du smoke detector

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==================== Roadmap for release 0.72 ========================

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== New Features to announce ==
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* Coq realizations. See manual Chapter xx
* Coq tactic. See manual Chapter xx
* tool why3session, including commands latex, html, stats. See manual Section xx
* tool why3doc. See manual Section xx
* Support for several versions of the same prover, for prover upgrade.
See manual Section xx
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* Improved IDE:
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 - left scrollbar, selection of shown or hidden provers, font enlargement
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 - integration of the support for prover upgrade
 - support for selection of alternate editors
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* Complete support for limiting provers' memory usage
* Improved support of Microsoft Windows OS
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* what else ?
* see also the file CHANGES

== Final preparation ==

* check that nightly bench is OK
* put 0.72 in file Version
* increment the magic number in config (needed ???)
* check headers
* check the file CHANGES
* manual in PDF: check that macro \todo is commented out
    in ./macros.tex
* do "make distrib"
* test the distrib why3-0.72.tar.gz
* make a last commit:
 - add tag 0.72 to the git repository (do not forget to push it)
* put on the web page
 - why3-0.72.tar.gz
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 - standard library online, using why3doc (make stdlibdoc),
   to http://why3.lri.fr/stdlib/
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 - API doc, produced using ocamldoc (make apidoc), to http://why3.lri.fr/api/
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    Note: check that URL of API doc is correct in doc/api.tex line 9.
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 - update the main HTML page (sources are in why3-papers/www)
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* produce the Why3 part of ProVal gallery ?
* Announce the distrib
 - What to put in the announcement: see New Features above
* The next commit : add +git to the version in file Version
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* Announce the why3 tactic on Coq Club
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== TODOs ==

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* DONE bug CVC3 avec la division par 0, cf examples/tests-provers/cvc3.why
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* DONE Document the Coq plugin and tactic
** DONE option timelimit <n>
** DONE renommer "coq-plugin" en "coq-tactic"
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* DONE (JCF, ANDREI) add all examples from the VSTTE 2012 competition
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* DONE (CLAUDE) Ajouter page provers sur le site web why3
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** !TODO! relire
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* Documentation
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 - DONE traiter les \todo :
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 DONE install.tex:179:% \todo{que devient l'option -to-known-prover de why3session ?
 DONE manpages.tex:790:% \todo{A adapter en fonction de la decision sur l'upgrade de prover}
 DONE manpages.tex:809:\section{The \texttt{why3doc} tool} \todo{Documenter}
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 - (ANDREI) complete technical.tex: section "Drivers of external
   provers"

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 - DONE (GUILLAUME) Realisations Coq, comment fait l'utilisateur pour faire
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   ses realisations ne pas oublier de dire que les dependances avec le
   .why ou .mlw: ne sera pas vérifié

 - DONE Documenter l'utilisation de plusieurs versions du meme
   prouveur comme CVC3 et Z3

 - DONE (ANDREI) ajouter option a why3config pour ajouter association
   ident-executable
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   DONE remplacer le ":" par " " (Arg.Tuple)
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 - DONE (CLAUDE) Documenter les popups qui peuvent apparaitre dans why3ide
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   quand les prouveurs ont changé. Et les mettre au point:

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   . DONE Lors d'un replay, le dialogue "replace proof" apparait un nombre
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     important de fois, il faut absolument pouvoir interrompre, ou
     donner une reponse qui soit appliquée pour le reste.  (le 3e
     bouton "never replace..." ne semble pas jourer ce role...)

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   . DONE le dialogue "replace proof" est de toute facon trop large, et les
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   choix possibles sont confus.

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 - DONE (CLAUDE) meme ordre d'idee: ne pas ecraser "default editor" et
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   "timelimit"
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   en fait c'était déjà le cas
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* DONE permettre d'utiliser emacs/proof general a la place de coqide depuis
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  why3ide
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*** DONE allow to choose which one the IDE Preferences
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* (CLAUDE) why3session
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 - DONE passe sur la documentation ecrite par Francois reecrite par Guillaume
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 - DONE "why3replayer -latex" remplacé par "why3session latex"
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 - DONE "why3html" remplacé par "why3session html"
 - DONE "why3stats" (src/ide/stats.ml) remplacé par "why3session info --stats"
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* (JCF) ameliorer why3doc
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 - DONE rajouter la production des liens
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 - DONE produire un index.html
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* DONE provers
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 - DONE (CLAUDE) Ensure that we kill a prover after some time
   (ressurect %T ? with a meaning like twice the value of %t ?),
   because we cannot be sure they always honor their own -timeout
   option.

 - DONE (ANDREI) better use of Alt-Ergo's builtin theories: records,
   enumeration types (Alt-Ergo >= 0.94) => at least two drivers for
   Alt-Ergo, depending on its version number
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* DONE fix bugs and update the BTS
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 - DONE (CLAUDE) Refreshing the IDE pane for prover output
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* DONE (CLAUDE) IDE:
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 - DONE enlarge font (menu + shortcut Ctrl-+)
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 - DONE Ctrl-A to select all rows
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 - DONE Do not save if not needed
 - DONE ne pas ecrire saving sessions si on ne sauve pas la session
 - DONE add a scrollbar for the left panel

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* DONE (FRANCOIS) move Session module and its dependencies into the
  Why3 library
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 - but avoid duplication with session_ro
 - avoid also duplication of type like prover_data record
 - do not include task and transf in the data type, so that
   one can reload, and redetect provers
 - session + session_ro -> session_data + session_dynamic
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======================= Roadmap for release 0.71 ========================
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* DONE Final preparation:
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** put on the web page
*** why3-0.71.tar.gz
*** manual in PDF: check that macro \todo is commented out
    in ./macros.tex
*** API doc in HTML (suggestion: http://why3.lri.fr/api/)
    Note: check that URL of API doc is correct in doc/api.tex line 9.
** What to put in the announcement:
*** traceability from front-ends work
    (see Krakatoa and Jessie of the next release 2.30 of Why2)
*** many new examples in examples/ and examples/programs
*** significantly improved efficiency of WP calculus
*** improved method for matching old and new goals in proof sessions
*** several bug fixes
*** see also the file CHANGES
** The last commit:
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*** DONE increment the magic number in config
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*** add a tag to the git repository
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*** The next commit : increment why3 version
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* misc
** DONE fix bug with term shapes, not taking triggers into account
** DONE remove prover coq-realize
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* prover support
** DONE test/debug TPTP output, make Vampire work

* IDE:
** saving session
   * DONE add a "cancel" choice in the "ask" window

* DONE replayer: don't replay a goal that has changed, just display as an
  unsuccessful replay

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* DONE reload: improve matching of new and old goals by use a kind a distance
  between some notion of shape of a goal

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=== Roadmap for third release 0.70, july 2011 ========================
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* Final preparation: put on the web page
** why3-0.70.tar.gz
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** DONE manual in PDF: check that macro \todo can be commented out
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   from ./macros.tex
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** API doc in HTML (suggestion: http://why3.lri.fr/api/)
   Note: check that URL of API doc is correct in doc/api.tex line 9.
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** What to put in the annoucement
   - WhyML VC generator to prove programs
   - new tool why3replayer
   - incompatible changes in syntax: function, predicate, and, or
   - session database in XML format instead of sqlite3
   - threads problem in IDE solved (by not using threads anymore)
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   - IDE: not necessary to exit to change the input file: just use "reload"
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* The last commit (A):
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  ** DONE increment the magic number in config
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  ** add a tag to the git repository
  ** The next commit : increment de why3 version
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* DONE Distribution of examples: we should distribute those who have an xml file
  under git, and distribute the XML and Coq proofs (JC)
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* DONE document "Make obsolete" (A+C)

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* DONE update IDE section of starting.tex (C)
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* DONE update doc for why3replayer
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* DONE fix bug 12934 : Coq syntax
  https://gforge.inria.fr/tracker/index.php?func=detail&aid=12934&group_id=2990&atid=10293

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* DONE document new IDE features (C)
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* DONE doc: citer l'article Boogie 2011 quelque part

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* DONE deplacer le bouton "Cancel" dans le menu "tools",
  le renommer en "make obsolete"

* DONE Check if remark in doc/api.tex line 80 is still valid (A)

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* DONE put an up-to-date use_api.ml in the manual (C)

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* DONE enlever les caracteres de tab des sources
  et les caracteres latin1 (A)

* DONE faire tourner headache pour refabriquer les headers (A)
  ** dans gappa.ml : ajouter Guillaume en dessous de l'entete

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* DONE Rendre optionnel la question "would you like to save the session ?"
   (C) -> 3-state options (Yes/No/ask) dans la config
  + DONE dans le menu "file" : "save session" sans raccourci clavier