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Synthesis of Reactive Programs

Objective

The automatic synthesis of correct-by-design systems is considered the holy grail of software development.
It promises to revolutionize the traditional process by allowing designers to focus on what the system should
do and not on how to develop an implementation with the desired behavior.
Reactive synthesis – the automatic construction of systems that maintain an ongoing interaction with their
environment – is successfully used in hardware design, as exemplified by case studies like the synthesis of
the AMBA AHB bus controller. However, the algorithmic advances behind this success do not extend to the
complex, cyber-physical, increasingly autonomous systems ubiquitous today. The main obstacle for classical
synthesis methods is that such systems use data domains beyond Boolean variables. Naturally, unbounded
data types render the synthesis problem undecidable. Nevertheless, the importance of reactive program
synthesis, i.e. reactive synthesis in the presence of richer data domains, has sparked a strong interest in
developing techniques for this setting. Current approaches, however, suffer from one or both of two significant
limitations: they are either restricted in the type of correctness specifications they can handle or diverge when
reasoning about unbounded data is required. We aim to address these limitations and profoundly push the
boundaries of reactive program synthesis.
We will do this via a fundamental shift in how reactive synthesis interacts with logical reasoning about
data. Building on recent milestone results by the PI, we will develop symbolic reactive synthesis methods
that reason natively about data. We will develop and employ novel constraint-solving and functional synthesis
methods optimized towards integration in reactive synthesis. Our synthesis techniques will impact many
application domains, such as software for medical devices, mobile applications, and industrial control.

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Programme(s)

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Topic(s)

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Funding Scheme

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HORIZON-ERC - HORIZON ERC Grants

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Call for proposal

Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.

(opens in new window) ERC-2025-COG

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Host institution

CISPA - HELMHOLTZ-ZENTRUM FUR INFORMATIONSSICHERHEIT GGMBH
Net EU contribution

Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.

€ 1 996 997,00
Address
STUHLSATZENHAUS 5
66123 SAARBRUCKEN
Germany

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Region
Saarland Saarland Regionalverband Saarbrücken
Activity type
Research Organisations
Links
Total cost

The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.

€ 1 996 997,00

Beneficiaries (1)

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