NDLI: Reducing crash recoverability to reachability

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Programming the world of uncertain things (keynote)

Breaking through the normalization barrier: a self-interpreter for f-omega

Temporal verification of higher-order functional programs

Query-guided maximum satisfiability

Fully-abstract compilation by approximate back-translation

Decidability of inferring inductive invariants

Dependent types and multi-monadic effects in F*

Automatic patch generation by learning correct code

Chapar: certified causally consistent distributed key-value stores

Principal type inference for GADTs

Combining static analysis with probabilistic models to enable market-scale Android inter-component analysis

SMO: an integrated approach to intra-array and inter-array storage optimization

Effects as sessions, sessions as effects

Modelling the ARMv8 architecture, operationally: concurrency and ISA

Newtonian program analysis via tensor product

Lattice-theoretic progress measures and coalgebraic model checking

Learning programs from noisy data

Synthesis of reactive controllers for hybrid systems (keynote)

Type theory in type theory using quotient inductive types

Scaling network verification using symmetry and surgery

String solving with word equations and transducers: towards a logic for analysing mutation XSS

Lightweight verification of separate compilation

The hardness of data packing

Fabular: regression formulas as probabilistic programming

Estimating types in binaries using predictive modeling

'Cause I'm strong enough: Reasoning about consistency choices in distributed systems

Abstracting gradual typing

Abstraction refinement guided by a learnt probabilistic model

PolyCheck: dynamic verification of iteration space transformations on affine programs

Monitors and blame assignment for higher-order session types

A concurrency semantics for relaxed atomics that permits optimisation and avoids thin-air executions

Casper: an efficient approach to call trace collection

Algorithms for algebraic path properties in concurrent systems of constant treewidth components

Optimizing synthesis with metasketches

Confluences in programming languages research (keynote)

System f-omega with equirecursive types for datatype-generic programming

Model checking for symbolic-heap separation logic with inductive predicates

Symbolic computation of differential equivalences

From MinX to MinC: semantics-driven decompilation of recursive datatypes

The complexity of interaction

Kleenex: compiling nondeterministic transducers to deterministic streaming transducers

Algorithmic analysis of qualitative and quantitative termination problems for affine probabilistic programs

A program logic for concurrent objects under fair scheduling

The gradualizer: a methodology and algorithm for generating gradual type systems

Learning invariants using decision trees and implication counterexamples

Printing floating-point numbers: a faster, always correct method

Environmental bisimulations for probabilistic higher-order languages

Overhauling SC atomics in C11 and OpenCL

Pushdown control-flow analysis for free

Memoryful geometry of Interaction II: recursion and adequacy

Maximal specification synthesis

A theory of effects and resources: adjunction models and polarised calculi

Reducing crash recoverability to reachability

Unboundedness and downward closures of higher-order pushdown automata

Sound type-dependent syntactic language extension

Transforming spreadsheet data types using examples

PSync: a partially synchronous language for fault-tolerant distributed algorithms

Is sound gradual typing dead?

Symbolic abstract data type inference

Taming release-acquire consistency

Binding as sets of scopes

Example-directed synthesis: a type-theoretic interpretation

Reducing crash recoverability to reachability

Content Provider	ACM Digital Library
Author	Koskinen, Eric Yang, Junfeng
Abstract	Software applications run on a variety of platforms (filesystems, virtual slices, mobile hardware, etc.) that do not provide 100% uptime. As such, these applications may crash at any unfortunate moment losing volatile data and, when re-launched, they must be able to correctly recover from potentially inconsistent states left on persistent storage. From a verification perspective, crash recovery bugs can be particularly frustrating because, even when it has been formally proved for a program that it satisfies a property, the proof is foiled by these external events that crash and restart the program. In this paper we first provide a hierarchical formal model of what it means for a program to be crash recoverable. Our model captures the recoverability of many real world programs, including those in our evaluation which use sophisticated recovery algorithms such as shadow paging and write-ahead logging. Next, we introduce a novel technique capable of automatically proving that a program correctly recovers from a crash via a reduction to reachability. Our technique takes an input control-flow automaton and transforms it into an encoding that blends the capture of snapshots of pre-crash states into a symbolic search for a proof that recovery terminates and every recovered execution simulates some crash-free execution. Our encoding is designed to enable one to apply existing abstraction techniques in order to do the work that is necessary to prove recoverability. We have implemented our technique in a tool called Eleven82, capable of analyzing C programs to detect recoverability bugs or prove their absence. We have applied our tool to benchmark examples drawn from industrial file systems and databases, including GDBM, LevelDB, LMDB, PostgreSQL, SQLite, VMware and ZooKeeper. Within minutes, our tool is able to discover bugs or prove that these fragments are crash recoverable. .
Starting Page	97
Ending Page	108
Page Count	12
File Format	PDF
ISBN	9781450335492
DOI	10.1145/2837614.2837648
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2016-01-11
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Program analysis Crash recovery Formal verification
Content Type	Text
Resource Type	Article

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