Read e-book online Computer Aided Verification: 26th International Conference, PDF

By Armin Biere, Roderick Bloem (eds.)

ISBN-10: 3319088661

ISBN-13: 9783319088662

ISBN-10: 331908867X

ISBN-13: 9783319088679

This booklet constitutes the lawsuits of the twenty sixth overseas convention on laptop Aided Verification, CAV 2014, held as a part of the Vienna summer season of common sense, VSL 2014, in Vienna, Austria, in July 2014. The forty six common papers and eleven brief papers provided during this quantity have been rigorously reviewed and chosen from a complete of a hundred seventy five typical and fifty four brief paper submissions. The contributions are geared up in topical sections named: software program verification; automata; version checking and checking out; biology and hybrid platforms; video games and synthesis; concurrency; SMT and theorem proving; bounds and termination; and abstraction.

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Read or Download Computer Aided Verification: 26th International Conference, CAV 2014, Held as Part of the Vienna Summer of Logic, VSL 2014, Vienna, Austria, July 18-22, 2014. Proceedings PDF

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Additional info for Computer Aided Verification: 26th International Conference, CAV 2014, Held as Part of the Vienna Summer of Logic, VSL 2014, Vienna, Austria, July 18-22, 2014. Proceedings

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Let the property be ϕ = m0 ≥ 2m + 4. SMT-Based Model Checking for Recursive Programs 21 M(m) |=1 m0 ≥ 2m + 4 ? iter 1 1: N 2: N 3 D(d) |=0 ⊥ ? 1: Y iter 2 1: N 2: N 3 iter 3 1: N 2: N 3 T(t) |=0 t0 ≥ 2t ? 1: N 1: N 2: Y σ(T, 0) ← {t0 ≥ 2t} 2: Y D(d) |=0 d ≤ d0 − 1 ? 1: N iter 4 ρ(D, 0) ← {d = d0 − 1} σ(D, 0) ← {d ≤ d0 − 1} 2: Y σ(M, 1) ← {m0 ≥ 2m + 4} Fig. 4. A run of BndSafety on program in Fig. 3 and a bound 1 on the stack depth. Numbers in bold refer to the steps in Fig. 2. The first iteration of RecMC is trivial.

Why3 supports algebraic data types (in particular, records), whose fields may be regular or ghost. Pattern matching on such structures requires certain precautions. Any variable bound in the ghost part of a pattern must be ghost. Moreover, pattern matching over a ghost expression that has at least two branches must make the whole expression ghost, whatever the right-hand sides of the branches are, just as in the case of a conditional over a ghost Boolean expression. That said, ghost code can use the same data types as regular code.

In the following, we define programs using a logical representation, as opposed to giving a concrete syntax. A program A is a finite list of procedures with a designated main procedure M where the program begins. A procedure P is a tuple ιP , oP , ΣP , P , βP , where (a) ιP is the finite list of variables denoting the input values of the parameters, (b) oP is the finite list of variables denoting the output values of the parameters, (c) ΣP is a fresh predicate symbol of arity |ιP | + |oP |, (d) P is the finite list of local variables, and (e) βP is a quantifier-free sentence over the signature (S ∪ {ΣQ | Q ∈ A} ∪ ιP ∪ oP ∪ P ) in which a predicate symbol ΣQ appears only positively.

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Computer Aided Verification: 26th International Conference, CAV 2014, Held as Part of the Vienna Summer of Logic, VSL 2014, Vienna, Austria, July 18-22, 2014. Proceedings by Armin Biere, Roderick Bloem (eds.)


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