Watch a 15-minute conference presentation from USENIX Security '24 exploring optimizations for binary-code concolic execution through the SymFit prototype. Learn how researchers from UC Riverside identified and addressed performance bottlenecks in concrete instruction execution within concolic executors. Discover how their approach achieves faster pure concrete execution compared to baseline SymQEMU while maintaining comparable performance to vanilla QEMU. Understand the practical applications of this optimization, including improved efficiency in crash deduplication through enhanced symbolic tracing capabilities. Gain insights into how focusing on concrete execution optimization, rather than just symbolic execution and constraint solving, can advance the field of software testing using concolic execution techniques.