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SIIA Público
SISTEMA INTEGRAL DE INFORMACIÓN ACADÉMICA - PÚBLICO
Título del libro: 2020 8th Edition Of The International Conference In Software Engineering Research And Innovation (conisoft 2020) Título del capítulo: Formal Verification of a Database Management System
Program Verification; Separation logic; Database Management Systems
Resumen:
Assertion based program verification is a well-known formal approach to
(dis)prove correctness of algorithms associated to software systems.
Assertions are input and output properties a correct program must
satisfy. These properties are traditionally written in a specification
language based on classical logic. Associated classical reasoning
(inference) systems are then used to (dis)prove program correctness.
However, when programs manipulate mutable data structures such as
pointers, classical logical operators have been unable to successfully
model syntactically unrelated expressions. In this article, we study
separation logics, which are equipped with specially-purposed operators
to model mutable data structures. We describe the use of this logic as a
specification language in the verification of a database management
system (DMS). In particular, we detect several bugs in two DMS libraries
regarding heap manipulation. We describe these bugs in detail and
propose solutions.