$\Delta\eta$ integrated projections of correlation functions for (a) $\pi^+\pi^-$, (b) $\rm K^+K^-$, (c) $\mathrm{p\overline{p}}$, and (d) $\Lambda\overline{\Lambda}$ pairs obtained from ALICE data and four Monte Carlo models (PYTHIA6 Perugia-0, PYTHIA6 Perugia-2011, PYTHIA8 Monash, PHOJET) at $\sqrt{s}=7\ \rm{TeV}$. Bottom panels show ratios of MC models to ALICE data. Statistical (bars) and systematic (boxes) uncertainties are plotted.