- While testing can assist establish that a contract produces the expected results for specific data inputs, it cannot verify it for inputs that are not used during tests. Testing a smart contract cannot provide "functional correctness," which means that it cannot demonstrate that a software operates as expected for all sets of input values and conditions.


- Developers are encouraged to add formal verification into their approach to verifying smart contract accuracy. Formal verification specifies and verifies software using formal methods, which are mathematically rigorous procedures.


- Formal verification is vital for smart contracts because it allows developers to formally test smart contract assumptions. This is accomplished by developing formal specifications that specify the attributes of a smart contract and verifying that a formal model of the smart contract matches the specification. This method enhances assurance that a smart contract will only perform the functions stated in its business logic.


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