## A Formal Model of Extended Finite State Machines

Michael Foster, Achim D. Brucker, Ramsay G. Taylor und John Derrick

In this AFP entry, we provide a formalisation of extended finite state machines (EFSMs) where models are represented as finite sets of transitions between states. EFSMs execute traces to produce observable outputs. We also define various simulation and equality metrics for EFSMs in terms of traces and prove their strengths in relation to each other. Another key contribution is a framework of function definitions such that LTL properties can be phrased over EFSMs. Finally, we provide a simple example case study in the form of a drinks machine.

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Michael Foster, Achim D. Brucker, Ramsay G. Taylor und John Derrick. A Formal Model of Extended Finite State Machines. In Archive of Formal Proofs, 2020. http://www.isa-afp.org/entries/Extended_Finite_State_Machines.html, Formal proof development
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BibTeX
@Article{ foster.ea:efsm:2020,
 abstract = {In this AFP entry, we provide a formalisation of extended finite state machines (EFSMs) where models are represented as finite sets of transitions between states. EFSMs execute traces to produce observable outputs. We also define various simulation and equality metrics for EFSMs in terms of traces and prove their strengths in relation to each other. Another key contribution is a framework of function definitions such that LTL properties can be phrased over EFSMs. Finally, we provide a simple example case study in the form of a drinks machine.}, author = {Michael Foster and Achim D. Brucker and Ramsay G. Taylor and John Derrick}, date = {2020-09-07}, file = {https://www.brucker.ch/bibliography/download/2020/foster.ea-efsm-outline-2020.pdf}, filelabel = {Outline}, issn = {2150-914x}, journal = {Archive of Formal Proofs}, month = {sep}, note = {\url{http://www.isa-afp.org/entries/Extended_Finite_State_Machines.html}, Formal proof development}, pdf = {https://www.brucker.ch/bibliography/download/2020/foster.ea-efsm-2020.pdf}, title = {A Formal Model of Extended Finite State Machines}, url = {https://www.brucker.ch/bibliography/abstract/foster.ea-efsm-2020}, year = {2020},
}