VisSAT: Visualization of SAT Solver Internals for Computer Aided Hardware Verification

Today, many applications for formal circuit verification exist that rely on solvers for Boolean satisfiability (SAT). Usually, these applications use the SAT solver as a black-box. However, exploiting information on the internals of the solving process can speed-up the treatment of the verification task. In this paper, we present the tool VisSAT. VisSAT provides insights into the internals of SAT solvers. Statistics of the internal solving process are collected and visualized on the circuit. By this, a verification engineer gets insight about potential bottlenecks for formal verification. This can be used to reconfigure the SAT solver or to improve the