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From: Claude <claude.defour@orange.fr>
Newsgroups: comp.lang.ada
Subject: What is SPARK about?
Date: Fri, 11 Jun 2010 13:32:53 -0700 (PDT)
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Date: 2010-06-11T13:32:53-07:00
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Ada is a formal language to software engineering.

What is SPARK about?

I means since SPARK is restricted to the best of Ada, is SPARK better
than Ada to resolving complex engineering applications, or SPARK a
better choice than C/C++ to address leaner systems?  (in terms of
compliance to early drafts of DO-178C - certification levels C to A).

Indeed, the successful applications of SPARK bring to results that are
rather difficult to compare.

=93The formal design of Tokeneer ID Station (TIS) shows the TIS system
to be a purely sequential system.=94 -  (INFORMED design, at section
2.2, Identification of the SPARK boundary)

=93We believe part of the success of proof on SHOLIS is due to the
simple system architecture. =85
Some large-scale SPARK reasoning are also needed, including support
for abstract proof, before the technology can be extensively used at
the highest level of large systems.=94 - (Is Proof More Cost Effective
Than Testing =96 Section 8, Summary).

Beyond any theory or academic project, 10 years later, from all the
past SPARK projects=92 experiences, does it happen that SPARK can
address =93purely sequential systems=94 or that SPARK =93can be extensively
used at the highest level of large systems=94?

Claude