Selected publications at LSV

Data-driven workflows, of which IBM's Business Artifacts are a prime exponent, have been successfully deployed in practice, adopted in industrial standards, and have spawned a rich body of research in academia, focused primarily on static analysis. The present work represents a significant advance on the problem of artifact verification, by considering a much richer and more realistic model than in previous work, incorporating core elements of IBM's successful Guard-Stage-Milestone model. In particular, the model features task hierarchy, concurrency, and richer artifact data. It also allows database key and foreign key dependencies, as well as arithmetic constraints. The results show decidability of verification and establish its complexity, making use of novel techniques including a hierarchy of Vector Addition Systems and a variant of quantifier elimination tailored to our context.

   address = {San Francisco, California, USA},
   author = {Deutsch, Alin and Li, Yuliang and Vianu, Victor},
   booktitle = {{P}roceedings of the 35th {ACM} {SIGMOD-SIGACT-SIGAI} {S}ymposium on {P}rinciples of {D}atabase {S}ystems ({PODS}'16)},
   DOI = {10.1145/2902251.2902275},
   month = jun,
   pages = {179-194},
   publisher = {ACM Press},
   title = {{P}roceedings of the 35th {ACM} {SIGMOD-SIGACT-SIGAI} {S}ymposium on {P}rinciples of {D}atabase {S}ystems ({PODS}'16)},
   year = {2016},

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