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The Z3 context and its reference counters are stored in a structure which is allocated by the C layer outside the OCaml heap, whenever a Z3 context is created. The structure and its Z3 context are disposed, once the last reference counter reaches zero. Reference counters are decremented by C-level finalizers. The OCaml representations for a Z3 context wrap only a pointer to the corresponding structure.
Instructions for updating external Z3 API ----------------------------------------- The python "macros": def_Type() and def_API() are used to add new types and function definitions to the Z3 API. The .h files provided to `mk_bindings(API_files)` contain these definitions. See src\api\z3_api.h for many examples. The bindings for .Net and Python are generated when mk_make.py is invoked.