memwrite preserves existence of a ref
memwrite preserves existence of a ref

on generalizing some definitions beyond their intended usecases, fstar found the proof automatically

msprotz/FStar,A-Manning/FStar,FStarLang/FStar,msprotz/FStar,msprotz/FStar,YaccConstructor/FStar,MallabaevAzamat/FStar,hoheinzollern/FStar,aa755/FStar,FStarLang/FStar,msprotz/FStar,MallabaevAzamat/FStar,FStarLang/FStar,aa755/FStar,YaccConstructor/FStar,YaccConstructor/FStar,aa755/FStar,A-Manning/FStar,aa755/FStar,YaccConstructor/FStar,hoheinzollern/FStar,MallabaevAzamat/FStar,A-Manning/FStar,MallabaevAzamat/FStar,hoheinzollern/FStar,hoheinzollern/FStar