ion Techniques Exact Low-Level Runtime Analysis High-Level Real-Time Formal Model Low-Level Real-Time Formal Model High-Level Real-Time Verification Low-Level Real-Time Verification Exact High-Level WCET/BCET Analysis Executable Code Exact Low-Level WCET/BCET Analysis Figure 1.2: : A Formal Framework for the Specification, Modelling, Verification and Runtime Analysis of Real-Time Systems