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20242026
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cs.LO2026

A Practical Specification Language for Automatic Quantum Program Verification (Technical Report)

Wei-Lun Tsai, Yu-Fang Chen, Ondřej Lengál

Hoare-style verification provides a principled foundation for reasoning about the correctness of quantum programs, but existing approaches do not allow fully automatic verification…

cs.LO2025

Parameterized Verification of Quantum Circuits (Technical Report)

Parosh Aziz Abdulla, Yu-Fang Chen, Michal Hečko +4

We present the first fully automatic framework for verifying relational properties of parameterized quantum programs, i.e., a program that, given an input size, generates a corresp…

cs.LO2025

Negated String Containment is Decidable (Technical Report)

Vojtěch Havlena, Michal Hečko, Lukáš Holík +1

We provide a positive answer to a long-standing open question of the decidability of the not-contains string predicate. Not-contains is practically relevant, for instance in symbol…

cs.LO2025

A Uniform Framework for Handling Position Constraints in String Solving (Technical Report)

Yu-Fang Chen, Vojtěch Havlena, Michal Hečko +2

We introduce a novel decision procedure for solving the class of position string constraints, which includes string disequalities, not-prefixof, not-suffixof, strat, and not-str…

cs.LO2024

Verifying Quantum Circuits with Level-Synchronized Tree Automata (Technical Report)

Parosh Aziz Abdulla, Yo-Ga Chen, Yu-Fang Chen +5

We present a new method for the verification of quantum circuits based on a novel symbolic representation of sets of quantum states using level-synchronized tree automata (LSTAs).…

cs.LO2024

Complementation of Emerson-Lei Automata (Technical Report)

Vojtěch Havlena, Ondřej Lengál, Barbora Šmahlíková

We give new constructions for complementing subclasses of Emerson-Lei automata using modifications of rank-based Büchi automata complementation. In particular, we propose a specia…