What is a logic cone?

A logical cone is a window that displays only a portion of a netlist. In a logical cone, a net appears as a dashed line unless all instances that are connected to that net in the netlist are also present in the Logical Cone view. These nets are designated as partially connected, as opposed to fully connected nets.

What is cone of influence in formal verification?

The tool analyzes this checker and determines all the inputs, outputs and internal variables of the DUT that influence this checker. The result of this analysis is called the cone-of-influence [COI] and this is how it is computed Computing the variables contained in the cone of influence is straightforward.

What is meant by formal verification?

In the context of hardware and software systems, formal verification is the act of proving or disproving the correctness of intended algorithms underlying a system with respect to a certain formal specification or property, using formal methods of mathematics.

What is equivalence checking in formal verification?

Definition. Equivalence checking is a portion of a larger discipline called formal verification. This technology uses mathematical modeling techniques to prove that two representations of design exhibit the same behavior.

What is formal core?

The formal core of a property is the union of all the registers, inputs and constraints that are necessary to prove the assertion. The logic is not just executed – it is shown to affect the proof or falsification of the assertions.

What are formal verification tools?

Formal verification tools include an array of technologies that use static analysis used to prove or disprove the correctness of hardware or software behavior with respect to a certain formal specification or property. Formal verification contrasts with dynamic verification techniques such as simulation.

What is logic equivalence checking?

Logic equivalence checking (LEC) looks at the combinatorial structure of the design to determine if the structure of two alternative implementations will exhibit the same behavior. If operations such as retiming are applied to a design, the structure of the design will no long map between the two representations.

What is formal method model?

The formal methods model is an approach to software engineering that applies mathematical methods or techniques to the process of developing complex software systems. The approach uses a formal specification language to define each characteristic of the system.

What is the role of formal verification in understanding and developing software?

Formal methods are intended to systematize and introduce rigor into all the phases of software development. By providing precise and unambiguous description mechanisms, formal methods facilitate the understanding required to coalesce the various phases of software development into a successful endeavor.