Communication and concurrency
Algorithmic number theory
Decidability of bisimilarity for one-counter processes
Information and Computation
Deciding bisimulation-like equivalences with finite-state processes
Theoretical Computer Science
Pushdown processes: games and model-checking
Information and Computation - Special issue on FLOC '96
Simulation Preorder on Simple Process Algebras
ICAL '99 Proceedings of the 26th International Colloquium on Automata, Languages and Programming
Efficient Verification Algorithms for One-Counter Processes
ICALP '00 Proceedings of the 27th International Colloquium on Automata, Languages and Programming
Simulation and Bisimulation over One-Counter Processes
STACS '00 Proceedings of the 17th Annual Symposium on Theoretical Aspects of Computer Science
Simulation Is Decidable for One-Counter Nets (Extended Abstract)
CONCUR '98 Proceedings of the 9th International Conference on Concurrency Theory
Simulation Problems for One-Counter Machines
SOFSEM '99 Proceedings of the 26th Conference on Current Trends in Theory and Practice of Informatics on Theory and Practice of Informatics
Concurrency and Automata on Infinite Sequences
Proceedings of the 5th GI-Conference on Theoretical Computer Science
On Simulation-Checking with Sequential Systems
ASIAN '00 Proceedings of the 6th Asian Computing Science Conference on Advances in Computing Science
Equivalence-Checking with Infinite-State Systems: Techniques and Results
SOFSEM '02 Proceedings of the 29th Conference on Current Trends in Theory and Practice of Informatics: Theory and Practice of Informatics
The complexity of bisimilarity-checking for one-counter processes
Theoretical Computer Science
DP Lower bounds for equivalence-checking and model-checking of one-counter automata
Information and Computation
LTL Over integer periodicity constraints
Theoretical Computer Science
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We present a general method for proving DP-hardness of equivalence-checking problems on one-counter automata. For this we show a reduction of the Sat-Unsat problem to the truth problem for a fragment of (Presburger) arithmetic. The fragment contains only special formulas with one free variable, and is particularly apt for transforming to simulation-like equivalences on one-counter automata. In this way we show that the membership problem for any relation subsuming bisimilarity and subsumed by simulation preorder is DP-hard (even) for one-counter nets (where the counter cannot be tested for zero). We also show DP-hardness for deciding simulation between one-counter automata and finite-state systems (in both directions).