IVy is a research tool intended to allow interactive development of protocols and their proofs of correctness and to provide a platform for developing and experimenting with automated proof techniques. In particular, IVy provides interactive visualization of automated proofs, and supports a use model in which the human protocol designer and the automated tool interact to expose errors and prove correctness.

Get it from here or as part of your Linux distribution.

Following the instructions here to install Z3. Set the environment variable Z3DIR to the prefix at which you installed Z3. By defult this is /usr/local, in which case:

$ export Z3DIR = /usr/local

This is needed to run the Tcl/Tk-based user interface. You do not need this to use the browser-based user interface or the command-line interface. You also need the python packages Tk, Tix and PLy. On Ubuntu, install them all like this:

$ sudo apt-get install python-tk python-ply tix libgv-tcl

Get the source like this:

$ git clone https://github.com/Microsoft/ivy.git

Set the environment variable IVYDIR to point to the root of Ivy's source tree, like this:

$ cd ivy
$ export IVYDIR=`pwd`

Add Ivy's bin directory to your path, like this:

$ export PATH=`pwd`/bin:$PATH

Run Ivy on an example, using the Tcl/Tk user interface:

$ cd examples/ivy
$ ivy client_server.ivy

An emacs major mode for Ivy is available in lib/emacs/ivy-mode.el. Put this file somewhere in your emacs load path and add the following code to your .emacs:

(add-to-list 'auto-mode-alist '("\\.ivy\\'" . ivy-mode))
(autoload 'ivy-mode  "ivy-mode.el" "Major mode for editing Ivy code" t nil)