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Related papers: Reachability in Continuous Pushdown VASS

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A pushdown vector addition system with states (PVASS) extends the model of vector addition systems with a pushdown stack. The algorithmic analysis of PVASS has applications such as static analysis of recursive programs manipulating integer…

Logic in Computer Science · Computer Science 2024-02-21 Guillermo A. Perez , Shrisha Rao

Reachability in pushdown vector addition systems with states (PVASS) is among the longest standing open problems in Theoretical Computer Science. We show that the problem is decidable in full generality. Our decision procedure is similar in…

Logic in Computer Science · Computer Science 2026-02-19 Roland Guttenberg , Eren Keskin , Roland Meyer

A pushdown vector addition system with states (PVASS) extends the model of vector addition systems with a pushdown store. A PVASS is said to be \emph{bidirected} if every transition (pushing/popping a symbol or modifying a counter) has an…

Formal Languages and Automata Theory · Computer Science 2022-04-26 Moses Ganardi , Rupak Majumdar , Andreas Pavlogiannis , Lia Schütze , Georg Zetzsche

The recent years have seen remarkable progress in establishing the complexity of the reachability problem for vector addition systems with states (VASS), equivalently known as Petri nets. Existing work primarily considers the case in which…

Formal Languages and Automata Theory · Computer Science 2023-10-26 Andrei Draghici , Christoph Haase , Andrew Ryzhikov

Vector addition system with states is an ubiquitous model of computation with extensive applications in computer science. The reachability problem for vector addition systems is central since many other problems reduce to that question. The…

Logic in Computer Science · Computer Science 2020-07-20 Jérôme Leroux , Grégoire Sutre

Determining the complexity of the reachability problem for vector addition systems with states (VASS) is a long-standing open problem in computer science. Long known to be decidable, the problem to this day lacks any complexity upper bound…

Formal Languages and Automata Theory · Computer Science 2017-03-20 Michael Blondin , Alain Finkel , Stefan Göller , Christoph Haase , Pierre McKenzie

Vector addition system with states (VASS) is a popular model for the verification of concurrent systems. VASS consists of finitely many control states and a set of counters which can be incremented and decremented, but not tested for zero.…

Logic in Computer Science · Computer Science 2024-05-21 A. R. Balasubramanian

Vector addition systems (VAS) constitute an important model of computation and concurrency that is equally expressive as the Petri net model. Recently, a lot of research has been conducted on vector addition systems with states (VASS),…

Formal Languages and Automata Theory · Computer Science 2026-04-28 Weijun Chen , Yuxi Fu , Yangluo Zheng

Vector addition systems with states (VASS), also known as Petri nets, are a popular model of concurrent systems. Many problems from many areas reduce to the reachability problem for VASS, which consists of deciding whether a target…

Formal Languages and Automata Theory · Computer Science 2025-05-20 Roland Guttenberg , Wojciech Czerwiński , Sławomir Lasota

The reachability problem is a central decision problem for formal verification based on vector addition systems with states (VASS), which are equivalent to Petri nets and form one of the most studied and applied models of concurrency.…

Formal Languages and Automata Theory · Computer Science 2020-05-12 Wojciech Czerwiński , Sławomir Lasota , Ranko Lazić , Jérôme Leroux , Filip Mazowiecki

Vectors addition systems with states (VASS), or equivalently Petri nets, are arguably one of the most studied formalisms for the modeling and analysis of concurrent systems. A central decision problem for VASS is reachability: whether there…

Logic in Computer Science · Computer Science 2025-07-01 Clotilde Bizière , Thibault Hilaire , Jérôme Leroux , Grégoire Sutre

Vector addition systems with states (VASS) are widely used for the formal verification of concurrent systems. Given their tremendous computational complexity, practical approaches have relied on techniques such as reachability relaxations,…

Logic in Computer Science · Computer Science 2023-06-22 Michael Blondin , Mikhail Raskin

Branching VASS (BVASS) generalise vector addition systems with states by allowing for special branching transitions that can non-deterministically distribute a counter value between two control states. A run of a BVASS consequently becomes…

Formal Languages and Automata Theory · Computer Science 2016-05-09 Stefan Göller , Christoph Haase , Ranko Lazić , Patrick Totzke

This paper studies reachability, coverability and inclusion problems for Integer Vector Addition Systems with States (ZVASS) and extensions and restrictions thereof. A ZVASS comprises a finite-state controller with a finite number of…

Formal Languages and Automata Theory · Computer Science 2014-10-01 Christoph Haase , Simon Halfon

We investigate the dimension-parametric complexity of the reachability problem in vector addition systems with states (VASS) and its extension with pushdown stack (pushdown VASS). Up to now, the problem is known to be $\mathcal{F}_k$-hard…

Formal Languages and Automata Theory · Computer Science 2023-11-14 Wojciech Czerwiński , Ismaël Jecker , Sławomir Lasota , Jérôme Leroux , Łukasz Orlikowski

We study pushdown vector addition systems, which are synchronized products of pushdown automata with vector addition systems. The question of the boundedness of the reachability set for this model can be refined into two decision problems…

Formal Languages and Automata Theory · Computer Science 2015-07-28 Jérôme Leroux , Grégoire Sutre , Patrick Totzke

We consider the model of one-dimensional Pushdown Vector Addition Systems (1-PVAS), a fundamental computational model simulating both recursive and concurrent behaviours. Our main result is decidability of the reachability problem for…

Formal Languages and Automata Theory · Computer Science 2024-11-05 Clotilde Bizière , Wojciech Czerwiński

Vector addition systems with states (VASS) are a popular model for concurrent systems. However, many decision problems have prohibitively high complexity. Therefore, it is sometimes useful to consider overapproximating semantics in which…

Logic in Computer Science · Computer Science 2023-09-14 Pascal Baumann , Khushraj Madnani , Filip Mazowiecki , Georg Zetzsche

Vector Addition Systems with States (VASS), equivalent to Petri nets, are a well-established model of concurrency. The central algorithmic challenge in VASS is the reachability problem: is there a run from a given starting state and counter…

Formal Languages and Automata Theory · Computer Science 2024-12-24 Dmitry Chistikov , Wojciech Czerwiński , Filip Mazowiecki , Łukasz Orlikowski , Henry Sinclair-Banks , Karol Węgrzycki

Reachability of vector addition systems with states (VASS) is Ackermann complete~\cite{leroux2021reachability,czerwinski2021reachability}. For $d$-dimensional VASS reachability it is known that the problem is…

Computational Complexity · Computer Science 2025-04-18 Yuxi Fu , Yangluo Zheng , Qizhe Yang
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