96,965 research outputs found
Differentially Testing Soundness and Precision of Program Analyzers
In the last decades, numerous program analyzers have been developed both by
academia and industry. Despite their abundance however, there is currently no
systematic way of comparing the effectiveness of different analyzers on
arbitrary code. In this paper, we present the first automated technique for
differentially testing soundness and precision of program analyzers. We used
our technique to compare six mature, state-of-the art analyzers on tens of
thousands of automatically generated benchmarks. Our technique detected
soundness and precision issues in most analyzers, and we evaluated the
implications of these issues to both designers and users of program analyzers
Sound and Automated Synthesis of Digital Stabilizing Controllers for Continuous Plants
Modern control is implemented with digital microcontrollers, embedded within
a dynamical plant that represents physical components. We present a new
algorithm based on counter-example guided inductive synthesis that automates
the design of digital controllers that are correct by construction. The
synthesis result is sound with respect to the complete range of approximations,
including time discretization, quantization effects, and finite-precision
arithmetic and its rounding errors. We have implemented our new algorithm in a
tool called DSSynth, and are able to automatically generate stable controllers
for a set of intricate plant models taken from the literature within minutes.Comment: 10 page
FpSynt: a fixed-point datapath synthesis tool for embedded systems
Digital mobile systems must function with low power, small size and weight,
and low cost. High-performance desktop microprocessors, with built-in floating
point hardware, are not suitable in these cases. For embedded systems, it can
be advantageous to implement these calculations with fixed point arithmetic
instead. We present an automated fixed-point data path synthesis tool FpSynt
for designing embedded applications in fixed-point domain with sufficient
accuracy for most applications. FpSynt is available under the GNU General
Public License from the following GitHub repository:
http://github.com/izhbannikov/FPSYN
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