PARIS: a parallel pattern fault simulator for synchronous sequential circuits

The authors describe PARIS, a parallel-pattern fault simulator for synchronous sequential circuits. PARIS is based on the well-known approach of parallel pattern single fault propagation for combinational circuits and features several new techniques. Every single pattern packet is simulated by an iterative, event-driven method. Heuristic look-ahead of signal values minimizes the number of events that must be tracked. Clever circuit partitioning prevents multiple evaluation of the feedback free parts of the circuit, thus reducing the required simulation effort. Experiments show that PARIS runs at a substantially higher asymptotic speed compared with a state-of-the-art fault simulator for synchronous sequential circuits.<>