ISSUE : Cumulative coverage issue in IMC

What tool version are you using? If you run "imc -batch", it should report something like:

IMC(64): 14.20-s007: (c) Copyright 1995-2016 Cadence Design Systems Inc - Coverage engine version: 14.20-s007

let us know that information.

The error you're reporting is not from IMC, it's from a Linux script "/usr/bin/merge" so I think you have a scripting problem at your end (or you're using some very old prototype version of IMC that didn't have the merge command, but that seems very unlikely).

I ran the same here and it's working perfectly for me:

% imc -batch
IMC(64): 14.10-s011: (c) Copyright 1995-2014 Cadence Design Systems Inc
Starting batch mode
imc> merge mipi_base_test*/scope/mipi_base_test -out final -metrics all -initial_model union_all -message 1
*I,MERGL1: Merging IUS Coverage ...
----------------------------
*I,MERGL1: Preparing target model ...
*I,MERGL1: Doing model union ...
*I,MERGL2: With primary run (mipi_base_test_01/scope/mipi_base_test): mipi_base_test_01/scope/icc_27f588a9_00000000.ucm
*I,MERGL1: Target model generated successfully.
*I,MERGL1: Projecting IUS ucd data into the target model ...
*I,MERGL2: mipi_base_test_01/scope/mipi_base_test:
*I,MERGL3: Merging instance tree tb to tb:
*I,MERGL3: Data is projected in to the target model.
*I,MERGL2: mipi_base_test_02/scope/mipi_base_test:
*I,MERGL3: Merging instance tree tb to tb:
*I,MERGL3: Data is projected in to the target model.
*I,MERGL2: mipi_base_test_03/scope/mipi_base_test:
*I,MERGL3: Merging instance tree tb to tb:
*I,MERGL3: Data is projected in to the target model.
*I,MERGL1: Writing output database cov_work/scope/final:
*I,MERGL2: Model: cov_work/scope/final/icc_27f588a9_00000000.ucm
*I,MERGL2: Data : cov_work/scope/final/icc_27f588a9_00000000.ucd
*I,MERGL1: No Specman coverage databases found in the runs.
Total conflicts during target model creation: 0
Total items not merged : 0
imc>

So, I'm sure the problem is in your environment somehow. If you'd been pasting the command from an email or documentation, try typing it out manually, in case there are some hidden special characters screwing everything up.

Please note that 14.10.011 is very old, it came out in early 2014, please consider using a newer version; the last 14.10 update was in May 2016, or you could look at using a supported version such as 15.20.

Hi Stephen,
The problem i made was, The merge command which i have given as below;
imc> merge mipi_base_test*/scope/mipi_base* -out final -metrics all -initial_model union_all -message 1
After scope * should be avoided to get merging properly.

Thanks for the support.

Regards,
Mahee