Alterations to LLVM and KLEE for practical "false positive pruning" defect finding.

Copyright Martin Trojer martin.trojer@gmail.com

For more information see http://martintrojer.github.io/software/2011/11/10/applied-symbolic-execution-with-kleellvm

llvm-2.6/ contains the changes to LLVM, mainly the "CallPaths" LLVM analysis pass. This uses Boost Graph Library to generate a set of potential paths from a root basic block to the target basic-block(s).

klee/ contains the changes to klee. This is mainly a new seracher "GuidedSearcher" in lib/Core/Sercher.cpp This searcher uses to CallPaths LLVM pass as mentioned above.