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 "incremental sat library integration using abstract stobjs"):
  Abstract: We describe an effort to soundly use off-the-shelf incremental SAT solvers within ACL2 by modeling the behavior of a SAT solver library as an abstract stobj. The interface allows ACL2 programs to use incremental SAT solvers, and the abstract stobj model allows us to reason about the behavior of an incremental SAT library so as to show that algorithms implemented using it are correct, as long as the library is bug-free.

Includes members:
  Member "extending acl2 with smt solvers":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "a survey on theorem provers in formal methods")
  Member "verified aig algorithms in acl2":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "proceedings of the 15th international workshop on the acl2 theorem prover and its applications a toolbox for property checking from simulation using incremental sat extended abstract")
  Member "abstract stobjs and their application to isa modeling":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "a formalisation of the sparc tso memory model for multi core machine code")
  Member "bit blasting acl2 theorems":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "a survey on theorem provers in formal methods")

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)