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Chengyu Zhang

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SMT2Test: From SMT Formulas to Effective Test CasesOOPSLA 20242024-10-20
SMT2Test transforms SMT formulas into executable programs (Dafny and C via an intermediate representation) and encodes satisfiability as a reachability…
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Generative Type-Aware Mutation for Testing SMT SolversOOPSLA 20212021-10-17
Generative Type-Aware Mutation implements expression mutation using SMT-LIB operator signatures to produce grammatically correct but larger mutants, realized…
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On the Unusual Effectiveness of Type-Aware Operator Mutations for Testing SMT SolversOOPSLA 20202020-11-15
Proposes type-aware operator mutation: randomly replace operators with others of the same SMT-LIB type, chain mutations, and cross-check Z3 vs CVC4 to spot…
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