lEnv.model_env</a> <span>&#45;&gt;</span> <span>ret:<span class="type-var">'a</span></span> <span>&#45;&gt;</span> <a href="../../BO/BufferOverrunDomain/Mem/index.html#type-t">BO.BufferOverrunDomain.Mem.t</a> <span>&#45;&gt;</span> <span>of_function:string</span> <span>&#45;&gt;</span> <span>degree_kind:<a href="../../BO__Polynomials/DegreeKind/index.html#type-t">BO__Polynomials.DegreeKind.t</a></span> <span>&#45;&gt;</span> <a href="../../Costlib/CostUtils/BasicCost/index.html#type-t">Costlib.CostUtils.Bas