Devices, systems, and methods are disclosed that are configured to execute functions using synthesized parallel stateless asynchronous flowcharts. The flowcharts include one or more test objects, action objects, and/or task objects. Each of the objects in the flowcharts to be executed sets out an atomic path, which is a sequence of functions with one or more elements. The disclosed processing circuits are configured to execute the functions/instructions set forth in the flowcharts by following each atomic path. In some embodiments, the processing circuits execute the one or more flowcharts in an order determined during processing (i.e., “on the fly”). In these and other embodiments, the disclosed processing circuits transform or restore elements of the one or more flowcharts with or without human intervention.