In reply to antonio92m:
You have to compile and simulate for coverage:
vlog +cover +incdir+$env(UVM_HOME)/src +incdir+…
vsim -onfinish stop -wlfnocollapse -sv_lib $env(UVM_DPI_LIB)/uvm_dpi -voptargs=+acc -assertdebug -displaymsgmode both -coverage -quiet …
Christoph