minusx0xminussxsyminusxyquot0sy0quotsxsysquotminusxysyplus0yyplussxysplusxyminusminusxyzminusxplusyz2.1minussxsyminusxyquotsxsyquotminusxysyquotsxsyminusxyplussxyplusxyminusminusxyzminusxplusyzminusminusxyzplusyztruequotsxsyquotminusxysytrue1234quot211quot20s11002quot22s11minus2100plus21minusx0xminusminusxyzminusxplusyzminussxsyminusxyquotsxsyminusxyfalse123minusminusxyzminusxplusyzminussxsyminusxytrue12minus212minus20plus21minus22003minus2minus212plus2s1100minussxsyminusxyminus210s10minus21minus22s11minusminusxyzplusyzfalse1plussxyplusxytrueplus213s10plus22s11
AProVE
3d3b40ebf1f1cc0cfb76e51606fb79299fd7ea19 rene 20120105 unpublished dirty
http://aprove.informatik.rwth-aachen.de/
John
Doe