le0ytruelesx0falselesxsylexyminusx0xminussxsyminusxygcd0yygcdsx0sxgcdsxsyif_gcdleyxsxsyif_gcdtruesxsygcdminusxysyif_gcdfalsesxsygcdminusyxsx2.1lesxsylexyminussxsyminusxygcdsxsyif_gcdleyxsxsygcdsxsyleyxif_gcdtruesxsygcdminusxysyif_gcdtruesxsyminusxyif_gcdfalsesxsygcdminusyxsxif_gcdfalsesxsyminusyxtruegcdsxsyif_gcdleyxsxsyif_gcdtruesxsygcdminusxysyif_gcdfalsesxsygcdminusyxsxtrue12345gcd20020if_gcd30030gcd22s12if_gcd30le21true00false00000gcd21s11if_gcd312le2true0minus21false000le0ytruelesx0falselesxsylexyminusx0xminussxsyminusxygcdsxsyleyxfalse3lesxsylexytrue3le223le20s11le2s11if_gcdtruesxsyminusxyfalse2if_gcdfalsesxsyminusyxfalseminussxsyminusxytrueminus223minus20s11minus2s11
AProVE
3d3b40ebf1f1cc0cfb76e51606fb79299fd7ea19 rene 20120105 unpublished dirty
http://aprove.informatik.rwth-aachen.de/
John
Doe