How To Install why3 on Ubuntu 20.04
Introduction
In this tutorial we learn how to install why3
on Ubuntu 20.04.
What is why3
why3 is:
Why3 is a platform for deductive program verification. It provides a rich language for specification and programming, called WhyML, and relies on external theorem provers, both automated and interactive, to discharge verification conditions. Why3 comes with a standard library of logical theories (integer and real arithmetic, Boolean operations, sets and maps, etc.) and basic programming data structures (arrays, queues, hash tables, etc.). A user can write WhyML programs directly and get correct-by-construction OCaml programs through an automated extraction mechanism. WhyML is also used as an intermediate language for the verification of C, Java, or Ada programs.
Why3 is a complete reimplementation of the former Why platform. Among the new features are: numerous extensions to the input language, a new architecture for calling external provers, and a well-designed API, allowing to use Why3 as a software library. An important emphasis is put on modularity and genericity, giving the end user a possibility to easily reuse Why3 formalizations or to add support for a new external prover if wanted.
There are three methods to install why3
on Ubuntu 20.04. We can use apt-get
, apt
and aptitude
. In the following sections we will describe each method. You can choose one of them.
Install why3 Using apt-get
Update apt database with apt-get
using the following command.
sudo apt-get update
After updating apt database, We can install why3
using apt-get
by running the following command:
sudo apt-get -y install why3
Install why3 Using apt
Update apt database with apt
using the following command.
sudo apt update
After updating apt database, We can install why3
using apt
by running the following command:
sudo apt -y install why3
Install why3 Using aptitude
If you want to follow this method, you might need to install aptitude first since aptitude is usually not installed by default on Ubuntu. Update apt database with aptitude
using the following command.
sudo aptitude update
After updating apt database, We can install why3
using aptitude
by running the following command:
sudo aptitude -y install why3
How To Uninstall why3 on Ubuntu 20.04
To uninstall only the why3
package we can use the following command:
sudo apt-get remove why3
Uninstall why3 And Its Dependencies
To uninstall why3
and its dependencies that are no longer needed by Ubuntu 20.04, we can use the command below:
sudo apt-get -y autoremove why3
Remove why3 Configurations and Data
To remove why3
configuration and data from Ubuntu 20.04 we can use the following command:
sudo apt-get -y purge why3
Remove why3 configuration, data, and all of its dependencies
We can use the following command to remove why3
configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge why3
References
Summary
In this tutorial we learn how to install why3
package on Ubuntu 20.04 using different package management tools: apt
, apt-get
and aptitude
.