Model Objects That Do Not Receive Coverage

R2026b

Simulink^® Coverage™ does not analyze decision, condition, MCDC, or relational boundary coverage for blocks that are not listed in Model Objects That Receive Coverage.

Note

Simulink Coverage does not record model coverage when the Simulation mode parameter is set to Rapid Accelerator. If you have an Embedded Coder^® license, Simulink Coverage can measure the coverage of code generated from models in software-in-the-loop (SIL) or processor-in-the-loop (PIL) mode. For more information, see Code Coverage for Models in Software-in-the-Loop (SIL) Mode and Processor-in-the-Loop (PIL) Mode.

This table identifies specific model objects that do not receive coverage.

Model object	Reason or Limitation
Logical Operator block	Logical Operator blocks do not receive coverage when the Operator parameter specifies XOR or NXOR and there are more than twelve scalar inputs or more than twelve elements in a vector input.
Model block	Model blocks do not receive coverage when: Models in accelerator mode receive coverage with some limitations. For more information, see Limitations for Coverage in Accelerator Mode. The Simulation mode parameter specifies Rapid Accelerator. The Simulation mode parameter specifies Accelerator but other models in the model reference hierarchy specify Normal.
Protected model block	Simulink Coverage does not analyze protected model blocks. For more information about protected model blocks, Model Protection (Simulink Coder).
Subsystem block	Subsystem blocks do not receive coverage when the Read/Write Permissions parameter is set to NoReadOrWrite.
Stateflow® chart MATLAB® Function block	Stateflow elements and MATLAB Function blocks do not receive coverage when debugging/animation is not enabled for the model or object.
Virtual blocks	Virtual blocks do not receive coverage. For more information, see Nonvirtual and Virtual Blocks.
MATLAB Files	MATLAB files that are obfuscated, such as by using the pcode function, do not receive coverage.
Blocks that do not contribute to run-time behavior	Blocks that do not contribute to run-time behavior do not receive coverage. For example, Check Signal Attributes block, blocks that handle data type propagation such as Data Type Propagation block, etc.