Abstract: A comparison of the results obtained from event generators EPOS4, UrQMD 3.4 (LHC), and PHQMD is performed using the simulation of collisions at ultra-high energies (7 TeV), as well as UrQMD and PHQMD for Xe–W collisions. Violations of energy, baryon, and electric charge conservation laws in EPOS4 are demonstrated. It is shown that, despite the fulfillment of these laws in PHQMD for collisions, the energy conservation law is violated for ion-ion collisions within a range of 10% of the collision energy considered. A comparison with experimental data is carried out, and the effect of event filtering based on the fulfillment of conservation laws is studied.