Embodiments include a method for verifying a counter design within a tolerance window within which a race condition occurs between a context event and a design event. The method includes receiving a plurality of events within the counter design, the plurality of events including the context event and the design event. The method also includes dynamically determining the tolerance window around the context event by setting a first portion of the tolerance window to precede an occurrence of the context event and by setting a second portion of the tolerance window to follow the context event. Additionally, the method includes performing a verification of whether the design event is within the first portion of the tolerance window or the second portion of the tolerance window.