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code_coverage_Error_The_design_unit _somename_has_multiple_top-level_instances_in_the_design_enabled_for_coverage

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Hi All, I am doing code coverage, receiving following error; ncelab: 14.10-s014: (c) Copyright 1995-2014 Cadence Design Systems, Inc. TOOL: ncelab 14.10-s014: Started on Jan 09, 2018 at 12:09:19 IST ncelab -f ncelab.args +incdir+../../rtl +incdir+. -MESSAGES -WORK worklib musbmhdrc_lpm_hostrst musbmhdrc_lpictl musbmhdrc_fsp musbmhdrc_i2c musbmhdrc_lpi utm_lpi ulpidec i2c_model -SNAPSHOT worklib.musbmhdrc_lpm_hostrst:v -coverage all -covfile mentor.ccf -status -covdut musbmhdrc Elaborating the design hierarchy: ncelab: *W,ICFUC: Unknown Command on line 2 of file mentor.ccf. ncelab: *W,ICFUC: Unknown Command on line 3 of file mentor.ccf. ncelab: *W,ICFUC: Unknown Command on line 4 of file mentor.ccf. ncelab: *W,COVEOP: mentor.ccf:7 "-all" with set_expr_scoring is an expensive option as it selects all the expressions in the design. It has been deprecated and will not be supported in subsequent releases. ncelab: *W,ICFUC: Unknown Command on line 11 of file mentor.ccf. Caching library 'worklib' ....... Done ncelab: *E,COVMDU: The design unit 'musbmhdrc' has multiple top-level instances in the design enabled for coverage. ncelab: Memory Usage - 36.2M program + 20.7M data = 56.9M total (Peak 56.9M) ncelab: CPU Usage - 0.0s system + 0.0s user = 0.0s total (0.1s, 92.2% cpu) TOOL: ncelab 14.10-s014: Exiting on Jan 09, 2018 at 12:09:19 IST (total: 00:00:00) This is the .ccf file; select_coverage -block -expr -toggle -file ./../../rtl/ select_coverage -block -module musbmhdrc set_assign_scoring set_expr_scoring -all set_expr_coverable_operators -all set_branch_scoring set_statement_scoring set_implicit_block_scoring -off set_explicit_block_scoring -off where musbmhdrc is the top design name and musbmhdrc_lpm_hostrst is the respective testcase. Can anyone help to proceed further ?

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