YES appnilkkapplnillappconsxlkconsxapplksumconsxnilconsxnilsumconsxconsylsumconsplusxylsumapplconsxconsyksumapplsumconsxconsykplus0yyplussxysplusxyconsxconsylconsyconsxl2.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 Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty Statistics for single proof: 100.00 % (7 real / 0 unknown / 0 assumptions / 7 total proof steps)http://aprove.informatik.rwth-aachen.deJohnDoe