This paper describes the Invisible Invariant Verifier (IIV)—an automatic tool for the generation of inductive invariants, based on the work in [4, 1, 2, 6]. The inputs to IIV are a parameterized system and an invariance property p, and the output of IIV is “success” if it finds an inductive

invariants can be transferred to the VC-validation phase without ever been examined by the user, which explains why we refer to them as "invisible". We illustrate the method on a non-trivial example of a cache protocol, provided by Steve German.

Abstract. The method of “Invisible Invariants ” has been applied successfully to protocols that assume a “symmetric ” underlying topology, be it cliques, stars, or rings. In this paper we show how the method can be applied to proving safety properties of distributed protocols running under

The method of Invisible Invariants was developed originally in order to verify safety properties of parameterized systems in a fully automatic manner. The method is based on (1) a project&generalize heuristic to generate auxiliary constructs for parameterized systems, and (2) a small model

displaced by the 2011 Libyan uprising

, inattentional blindness, change blindness and attentional blink. No single approach stands above the others, but those producing changing visual awareness despite invariant physical stimulation are clearly preferable. Such phenomena can help lead us ultimately to a comprehensive account of the neural correlates

of chroma keying where the keying signal is chroma difference. A new method for automatic keying using invisible signal is presented. The advantages of the new approach over conventional chroma keying include: (i) Unlimited color range for foreground objects. (ii) No foreground contamination by background

distributions of the two quark jets of the signal as compared to Zjj and Wjj backgrounds allow to restrict the Higgs branching ratio to ’invisible ’ final states to some 13% with 10 fb −1 of data, provided events with two energetic forward jets of high dijet invariant mass and with substantial missing

This paper deals with the attractors of generic dynamical systems. We introduce the notion of ε−invisible set, which is an open set in which almost all orbits spend on average a fraction of time no greater than ε. For extraordinarily small values of ε (say, smaller than 2−100), these are areas

Current VM designs prioritise implementor freedom and performance, at the expense of other concerns of the end pro-grammer. We motivate an alternative approach to VM design aiming to be unobtrusive in general, and prioritising two key concerns specifically: foreign function interfacing and sup-port for runtime analysis tools (such as debuggers, profilers etc.). We describe our experiences building a Python VM in this manner, and identify some simple constraints that help enable low-overhead foreign function interfacing and direct use of native tools. We then discuss how to extend this to-wards a higher-performance VM suitable for Java or similar languages. Categories and Subject Descriptors D.3.4 [Programming Languages]: Processors—run-time environments, debug-gers, compilers General Terms Languages 1.