By Gopal Gupta, Ricardo Peña

This booklet constitutes the completely refereed post-conference court cases of the twenty third overseas Symposium on Logic-Based application Synthesis and Transformation, LOPSTR 2013, held in Madrid, Spain, in September 2013.

The thirteen revised complete papers awarded including 2 invited talks have been rigorously reviewed and chosen from 21 submissions in the course of rounds of reviewing and development. LOPSTR often solicits papers within the parts of specification, synthesis, verification, transformation, research, optimization, composition, safeguard, reuse, functions and instruments, component-based software program improvement, software program architectures, agent-based software program improvement, and software refinement.

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Additional resources for Logic-Based Program Synthesis and Transformation: 23rd International Symposium, LOPSTR 2013, Madrid, Spain, September 18-19, 2013, Revised Selected Papers

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Ek with ei = π(ei ) if ei ∈ Obj D , ei = πSeq (ei ) if ei ∈ Seq D and ei = ei else. It will greatly simplify notation to stipulate that every partial isomorphism π is also defined on all primitive values w with π(w) = w. If p ∈ R for all program variables p, every automorphism extending a partial isomorphism π with respect to R according to Lemma 2 is a total isomorphism from D + s1 onto D + s2 since π(ps1 ) = ps2 by requirement (b). Not every partial isomorphism can be extended to a total isomorphism, on the other hand.

The main difference between the original property and the sufficient criterion is that the criterion admits the attacker the ability to distinguish between newly created objects and objects which already existed in the pre-state. This leads to a slightly stronger property. All three results hold the potential of significantly reducing the burden on analysis and monitoring tools. They apply under the assumption that references in Java are treated as opaque, as formalized by Postulate 1. As a third contribution, we introduce a specification methodology where security levels (high or low) are assigned to arbitrary JavaDL terms.

Proof (Theorem 2). Part 1: We assume flow∗∗ (s1 , α, R1 , R2 , N2 ) and show flow∗ (s1 , α, R1 , R2 ). To α D + s2 , this end we fix states s1 , s2 , s2 and domains D, D such that D + s1 α D + s2 and agree(R1 , s1 , s1 , id). We need to show agree(R2 , s2 , s2 , π), D + s1 where the uniquely determined partial isomorphism π is compatible with id. By assumption we obtain agree(N2 , s2 , s2 , σ) and we know that all objects in s Obj (N2s2 ) and Obj (N2 2 ) are new. By Lemma 5 there are domains D2 , D2 and 32 B.

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