On 09/05/2014 18:46, Kish Shen wrote: > To set the decay, I do > > solver->afc_decay(decay) > > before the call to branch(). > I moved the call to afc_decay() to after the call to branch(), and with this, setting afc_decay does make a difference. So is this the correct way to set the afc_decay? Cheers, Kish