3,594 research outputs found
Boost the Impact of Continuous Formal Verification in Industry
Software model checking has experienced significant progress in the last two
decades, however, one of its major bottlenecks for practical applications
remains its scalability and adaptability. Here, we describe an approach to
integrate software model checking techniques into the DevOps culture by
exploiting practices such as continuous integration and regression tests. In
particular, our proposed approach looks at the modifications to the software
system since its last verification, and submits them to a continuous formal
verification process, guided by a set of regression test cases. Our vision is
to focus on the developer in order to integrate formal verification techniques
into the developer workflow by using their main software development
methodologies and tools.Comment: 7 page
SMT-Based Refutation of Spurious Bug Reports in the Clang Static Analyzer
We describe and evaluate a bug refutation extension for the Clang Static
Analyzer (CSA) that addresses the limitations of the existing built-in
constraint solver. In particular, we complement CSA's existing heuristics that
remove spurious bug reports. We encode the path constraints produced by CSA as
Satisfiability Modulo Theories (SMT) problems, use SMT solvers to precisely
check them for satisfiability, and remove bug reports whose associated path
constraints are unsatisfiable. Our refutation extension refutes spurious bug
reports in 8 out of 12 widely used open-source applications; on average, it
refutes ca. 7% of all bug reports, and never refutes any true bug report. It
incurs only negligible performance overheads, and on average adds 1.2% to the
runtime of the full Clang/LLVM toolchain. A demonstration is available at {\tt
https://www.youtube.com/watch?v=ylW5iRYNsGA}.Comment: 4 page
Cultivar de Arroz de Terras Altas BRSGO Serra Dourada: Desempenho Produtivo em Roraima.
bitstream/item/135279/1/COT-175-N77.pd
Arroz Vermelho: Orientações técnicas para o manejo em lavouras de arroz irrigado em várzeas de Roraima.
bitstream/item/37030/1/DOC-41-2010-ID-44-1.pd
Evolução do Cultivo e Custo de Produção do Arroz Irrigado em Roraima
bitstream/item/35102/1/COT-47-2010-ID-13-1.pd
Desempenho produtivo da cultivar de Arroz de terras altas BRS Sertaneja em Roraima no perĂodo de 2002 a 2006.
bitstream/item/41044/1/BPD-25-2010-ID-54.pd
BRS Tropical: Nova cultivar de Arroz Para as Várzeas de Roraima.
bitstream/item/24082/1/tropical.pd
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