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We introduce Satometer, a tool that can be used to estimate the percentage of the search space actually explored by a
 

Summary: SAT '2002
ABSTRACT
We introduce Satometer, a tool that can be used to estimate
the percentage of the search space actually explored by a
backtrack SAT solver. Satometer calculates a normalized
minterm count for those portions of the search space identi-
fied by conflicts. The computation is carried out using a
zero-suppressed BDD data structure and can have adjustable
accuracy. The data provided by Satometer can help diagnose
the performance of SAT solvers and can shed light on the na-
ture of a SAT instance.
1. INTRODUCTION
The last few years have seen significant algorithmic advanc-
es in, and carefully-crafted implementations of, Boolean Sat-
isfiability (SAT) solvers [3, 14, 16, 20, 23, 25]. This has led
to their successful application to a wide range of large-scale
EDA problem instances consisting of thousands of variables
and millions of clauses [4, 11, 17, 18, 21, 22]. Despite these
remarkable developments, SAT solvers cannot escape the
underlying worst-case exponential complexity of their

  

Source: Aloul, Fadi - Department of Computer Engineering, American University of Sharjah

 

Collections: Engineering