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We consider the problem of efficiently checking a set of safety propertiesP1,....,Pk of one design. We introduce a new approach called JA-verificationwhere JA stands for "Just-Assume" (as opposed to "assume-guarantee"). In thisapproach, when proving property Pi, one assumes that every property Pj for j!=iholds. The process of proving properties either results in showing thatP1,....,Pk hold without any assumptions or finding a "debugging set" ofproperties. The latter identifies a subset of failed properties that causefailure of other properties. The design behaviors that cause the properties inthe debugging set to fail must be fixed first. Importantly, in our approach,there is no need to prove the assumptions used. We describe the theory behindour approach and report experimental results that demonstrate substantial gainsin performance, especially in the cases where a small debugging set exists.

Efficient Verification of Multi-Property Designs (The Benefit of Wrong Assumptions) (Extended Version)