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ICST 2020
Sat 24 - Wed 28 October 2020 Porto, Portugal

We introduce Learn2fix, the first human-in-the-loop, semi-automatic repair technique when no bug oracle–except for the user who is reporting the bug–is available. Our approach negotiates with the user the condition under which the bug is observed. Only when a budget of queries to the user is exhausted, it attempts to repair the bug. A query can be thought of as the following question: “When executing this alternative test input, the program produces the following output; is the bug observed”? Through systematic queries, Learn2fix trains an automatic bug oracle that becomes increasingly more accurate in predicting the user’s response. Our key challenge is to maximize the oracle’s accuracy in predicting which tests are bug-exposing given a small budget of queries. From the alternative tests that were labeled by the user, test-driven automatic repair produces the patch.

Our experiments demonstrate that Learn2fix learns a sufficiently accurate automatic oracle with a reasonably low labeling effort (lt. 20 queries). Given Learn2fix’s test suite, the GenProg test-driven repair tool produces a higher-quality patch (i.e., passing a larger proportion of validation tests) than using manual test suites provided with the repair benchmark.

This program is tentative and subject to change.

Mon 26 Oct
Times are displayed in time zone: (GMT) Azores change

icst-2020-papers
16:00 - 17:30: Research Papers - RT9 - Empirical Analysis and Program Repair at Farfetch (D. Maria)
icst-2020-papers16:00 - 16:30
Talk
Kesina BaralGeorge Mason University, Jeff OffuttGeorge Mason University
icst-2020-papers16:30 - 17:00
Talk
Maurizio LeottaUniversità di Genova, Matteo BiagiolaFondazione Bruno Kessler (FBK), Filippo RiccaUniversità di Genova, Mariano CeccatoUniversity of Verona, Paolo TonellaUniversità della Svizzera Italiana (USI)
icst-2020-papers17:00 - 17:30
Talk
Marcel BöhmeMonash University, Charaka GeethalMonash University, Van-Thuan PhamMonash University
Link to publication Pre-print