5 research outputs found
All-Path Reachability Logic
This paper presents a language-independent proof system for reachability
properties of programs written in non-deterministic (e.g., concurrent)
languages, referred to as all-path reachability logic. It derives
partial-correctness properties with all-path semantics (a state satisfying a
given precondition reaches states satisfying a given postcondition on all
terminating execution paths). The proof system takes as axioms any
unconditional operational semantics, and is sound (partially correct) and
(relatively) complete, independent of the object language. The soundness has
also been mechanized in Coq. This approach is implemented in a tool for
semantics-based verification as part of the K framework (http://kframework.org
All-Path Reachability Logic
This paper presents a language-independent proof system for reachability
properties of programs written in non-deterministic (e.g., concurrent)
languages, referred to as all-path reachability logic. It derives
partial-correctness properties with all-path semantics (a state satisfying a
given precondition reaches states satisfying a given postcondition on all
terminating execution paths). The proof system takes as axioms any
unconditional operational semantics, and is sound (partially correct) and
(relatively) complete, independent of the object language. The soundness has
also been mechanized in Coq. This approach is implemented in a tool for
semantics-based verification as part of the K framework (http://kframework.org
Executing Formal Semantics with the K Tool
Abstract. This paper describes the K tool, a system for formally defining programming languages. Formal definitions created using the K tool automatically yield an interpreter for the language, as well as program analysis tools such as a state-space explorer. The modularity of K and the design of the tool allow one semantics to be used for several applications
Dual antiplatelet therapy duration after coronary stenting in clinical practice: results of an EAPCI survey
Aims: Our aim was to report on a survey initiated by the EuropeanAssociation of Percutaneous Cardiovascular Interventions (EAPCI) concerning opinion on the evidence relating to dual antiplatelet therapy (DAPT) duration after coronary stenting.Methods and results: Results from three randomised clinical trials were scheduled to be presented at the American Heart Association Scientific Sessions 2014 (ARIA 2014). A web-based survey was distributed to all individuals registered in the EuroIntervention mailing list (n=15,200) both before and after ARIA 2014. A total of 1,134 physicians responded to the first (i.e., before AHA 2014) and 542 to the second (i.e., after ARIA 2014) survey. The majority of respondents interpreted trial results consistent with a substantial equipoise regarding the benefits and risks of an extended versus a standard DAPT strategy. Two respondents out of ten believed extended DAFT should be implemented in selected patients. After ARIA 2014, 46.1% of participants expressed uncertainty about the available evidence on DAFT duration, and 40.0% the need for clinical guidance.Conclusions: This EAPCI survey highlights considerable uncertainty within the medical community with regard to the optimal duration of DAFT after coronary stenting in the light of recent reported trial results. Updated recommendations for practising physicians to guide treatment decisions in routine clinical practice should be provided by international societies