human: Given a node-centered hypergraph: <hypergraph>, where nodes represent papers and hyperedges represent sets of papers co-cited by a source paper.

Details of the hypergraph:
Center node: "predicate abstraction via symbolic decision procedures"
  Abstract: We present a new approach for performing predicate abstraction based on#N#symbolic decision procedures. Intuitively, a symbolic decision procedure for a#N#theory takes a set of predicates in the theory and symbolically executes a#N#decision procedure on all the subsets over the set of predicates. The result of#N#the symbolic decision procedure is a shared expression (represented by a#N#directed acyclic graph) that implicitly represents the answer to a predicate#N#abstraction query.#N#  We present symbolic decision procedures for the logic of Equality and#N#Uninterpreted Functions (EUF) and Difference logic (DIFF) and show that these#N#procedures run in pseudo-polynomial (rather than exponential) time. We then#N#provide a method to construct symbolic decision procedures for simple mixed#N#theories (including the two theories mentioned above) using an extension of the#N#Nelson-Oppen combination method. We present preliminary evaluation of our#N#Procedure on predicate abstraction benchmarks from device driver verification#N#in SLAM.

Connected through hyperedge HE-1 (induced by source paper "automated predicate abstraction for real time models"):
  with members:
    - "interpolant based transition relation approximation"

Question: Please tell me which class the center node belongs to. The 40 classes are: cs.NA(Numerical Analysis), cs.MM(Multimedia), cs.LO(Logic in Computer Science), cs.CY(Computers and Society), cs.CR(Cryptography and Security), cs.DC(Distributed, Parallel, and Cluster Computing), cs.HC(Human-Computer Interaction), cs.CE(Computational Engineering, Finance, and Science), cs.NI(Networking and Internet Architecture), cs.CC(Computational Complexity), cs.AI(Artificial Intelligence), cs.MA(Multiagent Systems), cs.GL(General Literature), cs.NE(Neural and Evolutionary Computing), cs.SC(Symbolic Computation), cs.AR(Hardware Architecture), cs.CV(Computer Vision and Pattern Recognition), cs.GR(Graphics), cs.ET(Emerging Technologies), cs.SY(Systems and Control), cs.CG(Computational Geometry), cs.OH(Other Computer Science), cs.PL(Programming Languages), cs.SE(Software Engineering), cs.LG(Machine Learning), cs.SD(Sound), cs.SI(Social and Information Networks), cs.RO(Robotics), cs.IT(Information Theory), cs.PF(Performance), cs.CL(Computation and Language), cs.IR(Information Retrieval), cs.MS(Mathematical Software), cs.FL(Formal Languages and Automata Theory), cs.DS(Data Structures and Algorithms), cs.OS(Operating Systems), cs.GT(Computer Science and Game Theory), cs.DB(Databases), cs.DL(Digital Libraries), cs.DM(Discrete Mathematics). Directly output the class name.

gpt: cs.LO(Logic in Computer Science)