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In the context of hardware and software systems, formal verification is the act of proving or disproving the correctness of a system with respect to a certain formal specification or property, using formal methods of mathematics. [1] Formal verification is a key incentive for formal specification of systems, and is at the core of formal methods.
Formal verification is the use of software tools to prove properties of a formal specification, or to prove that a formal model of a system implementation satisfies its specification. Once a formal specification has been developed, the specification may be used as the basis for proving properties of the specification, and by inference ...
Roméo: an integrated tool environment for modelling, simulation, and verification of real-time systems modelled as parametric, time, and stopwatch Petri nets; SPIN: a general tool for verifying the correctness of distributed software models in a rigorous and mostly automated fashion; Storm: [22] A model checker for probabilistic systems.
MALPAS – A formal methods tool that uses directed graphs and regular algebra to prove that software under analysis correctly meets its mathematical specification. Polyspace – Uses abstract interpretation, a formal methods based technique, [17] to detect and prove the absence of certain run time errors in source code for C/C++, and Ada
CSP: Communicating sequential processes; formal language for describing patterns of interaction in concurrent systems. FDR2 is a refinement checking tool for CSP, comparing two models for compatibility. DVE input language: a system is described as Network of Extended Finite State Machines communicating via shared variables and unbuffered channels.
Verification is intended to check that a product, service, or system meets a set of design specifications. [6] [7] In the development phase, verification procedures involve performing special tests to model or simulate a portion, or the entirety, of a product, service, or system, then performing a review or analysis of the modeling results. In ...
The verification covers code, design, and implementation, and the main theorem states that the C code correctly implements the formal specification of the kernel. The proof uncovered 144 bugs in an early version of the C code of the seL4 kernel, and about 150 issues in each of design and specification.
A prominent example of this approach is CompCert, which is a formally verified optimizing compiler of a large subset of C99. [ 2 ] [ 3 ] [ 4 ] Another verified compiler was developed in CakeML project, [ 5 ] which establishes correctness of a substantial subset of Standard ML programming language using the HOL (proof assistant) .