CoCoA

The following code has the symptoms of a memory leak (grows to about 650Mbytes):

Use QQ[x,y,t];
Use ZZ/(32003)[x,y,t];
I := Ideal((8*t^3 -9*t^2 -4*t -8)*x -(6*t^3 -5*t^2 +7*t -7),
       (9*t^3 +8*t^2 -6*t +5)*y -(9*t^3 +8*t^2 -9*t +7));

For K := 1 To 10000 Do
  J := Elim([t],I);
EndFor;

I don't know if the leak is in C5 or in CoCoALib.

I expect that, once found, it will be almost trivial to fix.

BTW it could be handy to have BuildInfo in CoCoA-5 for those who report bugs.