Property-Based Testing: Climbing the Stairway to Verification Zilin Chen UNSW Sydney Sydney, Australia zilin.chen@student.unsw.edu.au Christine Rizkallah University of Melbourne Melbourne, Australia christine.rizkallah@unimelb.edu.au Liam O’Connor University of Edinburgh Edinburgh, UK l.oconnor@ed.ac.uk Partha Susarla Melbourne, Australia partha@spartha.org Gerwin Klein Proofcraft and UNSW Sydney