ortrueytrueorxtruetrueorfalsefalsefalsememxnilfalsememxsety=xymemxunionyzormemxymemxz2.1or21true00false00mem22nil00=22union23or221true0false0mem212nil0set11=212union221memxsety=xy1set121mem210=201AProVEAProVE Commit ID: 794c25de1cacf0d048858bcd21c9a779e1221865 marcel 20200619 unpublished dirty Statistics for single proof: 100.00 % (3 real / 0 unknown / 0 assumptions / 3 total proof steps)http://aprove.informatik.rwth-aachen.deJohnDoe