Only if the programmer can prove ( through formal machine - checkable proofs ) it ’ s free of bugs with respect to a claim of dependability
نویسنده
چکیده
Certified software consists of a machine-executable program plus a formal machine-checkable proof that the software is free of bugs with respect to a claim of dependability. The conventional wisdom is that certified software will never be feasible because the dependability of any real software must also rely on that of its underlying operating system and execution environment which is too low-level to be verifiable. In recent years, however, there have been many advances in the theory and engineering of mechanized proof systems applied to verification of low-level code, including proof-carrying code, certified assembly programming, local reasoning and separation logic, certified linking of heterogeneous components, and certified or certifying compilation. In this article, I give an overview of this exciting new field, focusing on both foundational ideas and key insights that make the work on certified software differ from traditional program verification systems. I will also describe several exciting recent advances and challenging open problems.
منابع مشابه
A module theoretic approach to zero-divisor graph with respect to (first) dual
Let $M$ be an $R$-module and $0 neq fin M^*={rm Hom}(M,R)$. We associate an undirected graph $gf$ to $M$ in which non-zero elements $x$ and $y$ of $M$ are adjacent provided that $xf(y)=0$ or $yf(x)=0$. Weobserve that over a commutative ring $R$, $gf$ is connected anddiam$(gf)leq 3$. Moreover, if $Gamma (M)$ contains a cycle,then $mbox{gr}(gf)leq 4$. Furthermore if $|gf|geq 1$, then$gf$ is finit...
متن کاملقواعد استرداد دادخواست و دعوای بدوی در فرض تعدد اصحاب دعوا
According to the rule of parties initiative, parties are free to terminate trial and procedural law respects the freedom of their will, although restrains it depending upon some circumstances. however, withdrawal of a case when there are multiple plaintiffs or defendants, may raise complicated issues which the Act does not have any solution for them and their suitable rules should be inferred b...
متن کاملAdvanced Development of Certified OS Kernels
1 Innovative Claims Operating System (OS) kernels form the bedrock of all system software—they can have the greatest impact on the resilience, extensibility, and security of today's computing hosts. A single kernel bug can easily wreck the entire system's integrity and protection. We propose to apply new advances in certified software [86] to the development of a novel OS kernel. Our certified ...
متن کاملON THE GROUPS WITH THE PARTICULAR NON-COMMUTING GRAPHS
Let $G$ be a non-abelian finite group. In this paper, we prove that $Gamma(G)$ is $K_4$-free if and only if $G cong A times P$, where $A$ is an abelian group, $P$ is a $2$-group and $G/Z(G) cong mathbb{ Z}_2 times mathbb{Z}_2$. Also, we show that $Gamma(G)$ is $K_{1,3}$-free if and only if $G cong {mathbb{S}}_3,~D_8$ or $Q_8$.
متن کاملA Cost-Effective Foundational Certified Code System
Certified code systems enable untrusted programs to be proven safe to execute in a machine–checkable manner. Recent work has focused on building foundational certified code systems, where safety is defined relative to a concrete machine architecture. We wish to build a cost–effective system, with practicality along two dimensions — the intellectual effort to engineer the proofs, and the resourc...
متن کامل