human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge is induced by one source paper and its member nodes are the cited papers.

Details of the hypergraph:
Center hyperedge (induced by source paper "satisfiability based methods for reactive synthesis from safety specifications"):
  Abstract: Existing approaches to synthesize reactive systems from declarative specifications mostly rely on Binary Decision Diagrams (BDDs), inheriting their scalability issues. We present novel algorithms for safety specifications that use decision procedures for propositional formulas (SAT solvers), Quantified Boolean Formulas (QBF solvers), or Effectively Propositional Logic (EPR). Our algorithms are based on query learning, templates, reduction to EPR, QBF certification, and interpolation. A parallelization combines multiple algorithms. Our optimizations expand quantifiers and utilize unreachable states and variable independencies. Our approach outperforms a simple BDD-based tool and is competitive with a highly optimized one. It won two medals in the SyntComp competition.

Includes members:
  Member "the second reactive synthesis competition syntcomp 2015":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "strategy representation by decision trees with linear classifiers")
  Member "incremental qbf solving":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "depqbf 6 0 a search based qbf solver beyond traditional qcdcl")
  Member "abssynthe abstract synthesis from succinct safety specifications":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "what s hard about boolean functional synthesis")
  Member "synthesizing multiple boolean functions using interpolation on a single proof":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "second order propositional satisfiability")
  Member "alpaga a tool for solving parity games with imperfect information":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "a comparison of bdd based parity game solvers")
  Member "algorithms for omega regular games with imperfect information":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "alternating tree automata with qualitative semantics")

Question: Please tell me which class the source paper 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)