Cat RG=Params.randomCat(seed,v0,v,e0,e);
ObjectStack S=new ObjectStack();
do {
RG.runGraphRanker();RG.markComponents();RG.rankSort();
int cycles=RG.checkCycle();
S.push(RG);
Prolog3D.pp("\nas saved:"+RG);
Prolog3D.pp("cycles="+cycles+",size="+RG.size());