Assertions interviews test whether you can express a temporal contract precisely and explain when it is sampled. Small syntax differences can change the cycle on which a consequent begins, whether a property passes vacuously, and how reset disables an active attempt.
Turn temporal intent into executable checks
SystemVerilog Assertions Interview Questions
Start by drawing the clocked trace before choosing operators. Identify the antecedent, consequent, overlap, bounded latency, reset policy, and any environmental assumptions.
Topic breakdown
What to be ready to explain
Sampling and operators
Place observations in the correct clocking region and distinguish overlap, delay, repetition, and sampled-value functions.
- Implication
- Repetition
- $past
- Sampling regions
Reset and meaningful proof
Handle disable conditions, avoid vacuous success, and state environmental assumptions that keep checks meaningful.
- disable iff
- Vacuity
- Assumptions
- Coverage
Protocol properties
Decompose handshakes, FIFOs, arbitration, clock gating, and forward progress into diagnostic temporal checks.
- Ready-valid
- Arbitration
- FIFO
- Liveness
Curated practice links
Questions to work through
Permanent bank numbers and direct links make it easy to continue in the live question bank.
- Q177Prove an arbiter avoids deadlock and livelock
Explain the key Deadlock and Livelock decisions, assumptions, and checks.
Formal Verification · Hard - Q293Assert an integer square-root pipeline
Explain the key SVA and Latency decisions, assumptions, and checks.
Temporal Checks · Easy - Q167Prove an elastic one-hot checker
Explain the key SVA and Ready/valid decisions, assumptions, and checks.
Temporal Checks · Easy - Q049Concurrent assertion scheduling
Explain the key Scheduling regions decisions, assumptions, and checks.
SystemVerilog · Medium - Q184SystemVerilog Assertions (SVA) implication
Explain the key Assertion timing decisions, assumptions, and checks.
Temporal Checks · Medium - Q500SVA repetition
Explain the key Assertion timing decisions, assumptions, and checks.
Temporal Checks · Medium - Q277SystemVerilog Assertions (SVA) disable iff
Explain the key Assertion timing decisions, assumptions, and checks.
Temporal Checks · Medium - Q707$past and nonblocking assignment (NBA) sampling
Explain the key Advanced assertions decisions, assumptions, and checks.
Temporal Checks · Hard - Q128Vacuity
Explain the key Advanced assertions decisions, assumptions, and checks.
Temporal Checks · Hard - Q040Sequence local variables
Explain the key Advanced assertions decisions, assumptions, and checks.
Temporal Checks · Hard - Q1014Check a single-outstanding request/grant protocol
Explain the key Protocol checker and Latency decisions, assumptions, and checks.
Protocol Verification · Medium - Q741Design a four-request arbiter verification environment
Explain the key UVM and Reference model decisions, assumptions, and checks.
Arbiters · Hard - Q802Design glitch-free clock gating
Explain the key Clock gating and ICG decisions, assumptions, and checks.
Low-Power Design · Medium - Q686Verify a synchronous FIFO
Explain the key FIFO and Scoreboard decisions, assumptions, and checks.
Verification · Medium - Q914Check an incrementing pulse interval
Explain the key SVA and Checker decisions, assumptions, and checks.
Assertions · Medium - Q225Design and verify a round-robin arbiter
Explain the key Arbiter and Fairness decisions, assumptions, and checks.
RTL Design · Hard - Q125Request and acknowledge latency assertion
Explain the key SVA and Request/acknowledge decisions, assumptions, and checks.
Temporal Checks · Easy - Q288Overlapped versus non-overlapped implication in SVA
Explain the key SVA and Implication decisions, assumptions, and checks.
Temporal Checks · Medium - Q117Code asynchronous reset assertion with two-edge release
Explain the key SVA and Reset decisions, assumptions, and checks.
Clock and Reset Domains · Medium - Q677Identify an asynchronous-reset recovery violation
Explain the key SVA and Reset decisions, assumptions, and checks.
Clock and Reset Domains · Medium - Q144Resolve Read and Write Requests on a Shared Port
Explain the key SVA and DDR decisions, assumptions, and checks.
Protocols and Interfaces · Medium - Q1046Assert stable AXI payload under backpressure
Explain the key SVA and AXI decisions, assumptions, and checks.
Assertions and Formal · Medium - Q1008Assert bounded request-to-grant latency
Explain the key SVA and Formal decisions, assumptions, and checks.
Assertions and Formal · Medium - Q650Implement a coordinated-reset depth-16 asynchronous FIFO
Explain the key SVA and CDC decisions, assumptions, and checks.
Clock and Reset Domains · Hard - Q1047Derive an Almost-Full Threshold from Stop Latency
Explain the key SVA and FIFO decisions, assumptions, and checks.
Timing · Hard - Q830Prove bounded bridge forward progress
Explain the key Formal decisions, assumptions, and checks.
Assertions and Formal · Hard - Q933Verify a cache entering retention
Explain the key SVA and Reset decisions, assumptions, and checks.
Clock and Reset Domains · Hard - Q166Prove clock-gating entry and wake safety
Explain the key Formal and Clocking decisions, assumptions, and checks.
Assertions and Formal · Hard
