VEBtree.opIn_r

auto currentSeed = unpredictableSeed();
static if(vdebug){write("UT: vT, member.       "); writeln("seed: ", currentSeed);} 
rndGenInUse.seed(currentSeed); //initialize the random generator

auto uS = uniform(allowedArraySize,testedSize, rndGenInUse);
VEBtree vT = new VEBtree(uS); 

size_t n; 
uint[allowedArraySize] insertedVals;  
while(n < allowedArraySize)
{
    auto valToInsert = uniform(0U, uS, rndGenInUse); 
    if(vT.insert(valToInsert))
    {
        insertedVals[n] = valToInsert; 
        n++;
    }
}

sort(insertedVals[]); 
auto sortedInserted = assumeSorted(insertedVals[]); 
for(size_t i; i < testedSize; ++i)
{
    if(sortedInserted.contains(i))
    {
        assert(i in vT);
    }
    else 
    {
        assert(!(i in vT), "i: " ~ to!string(i)); 
    }
}