minusx0xminussxsyminusxyquot0sy0quotsxsysquotminusxysyplus0yyplussxysplusxyminusminusxyzminusxplusyz2.1minussxsyminusxyquotsxsyquotminusxysyquotsxsyminusxyplussxyplusxyminusminusxyzminusxplusyzminusminusxyzplusyztruequotsxsyquotminusxysytrue1234quot211s11minus20002s11minus2100plus22minusx0xminusminusxyzminusxplusyzminussxsyminusxyquotsxsyminusxyfalse123minusminusxyzminusxplusyzminussxsyminusxytrue12minus211s10001minus21plus22s1100minusminusxyzminusxplusyzminus211minus20plus21002minus221plus200s11minusminusxyzplusyzfalse1plussxyplusxytrueplus211s10s11
AProVE
3d3b40ebf1f1cc0cfb76e51606fb79299fd7ea19 rene 20120105 unpublished dirty
http://aprove.informatik.rwth-aachen.de/
John
Doe