GWIT: A Witness Validator for Java based on GraalVM (Competition Contribution)

GWIT is a validator for violation witnesses produced by Java verifiers in the SV-COMP software verification competition. GWIT weaves assumptions documented in a witness into the source code of a program, effectively restricting the part of the program that is explored by a program analysis. It then uses the GDart tool (dynamic symbolic execution) to search for reachable errors in the modified program.