About VerifyThis is a series of program verification competitions, which has taken place annually since 2011 (with the exception of 2020). Previous competitions in the series have been held at FoVeOOS 2011, FM 2012, Dagstuhl (April 2014), and ETAPS 2015—2023. The challenge problems and solutions of previous competitions are available in the archive. The aims of the competition are: to bring togeth