Program Definition csharpmin_core_sem :
CoreSemantics Csharpminor.genv CSharpMin_core mem :=
@Build_CoreSemantics _ _ _
CSharpMin_initial_core
CSharpMin_at_external
CSharpMin_after_external
CSharpMin_halted
coopstep
csharpmin_coopstep_not_at_external
csharpmin_coopstep_not_halted
CSharpMin_at_external_halted_excl
CSharpMin_after_at_external_excl.
(************************NOW SHOW THAT WE ALSO HAVE A COOPSEM******)

Lemma csharpmin_coop_forward : forall g c m c' m' (CS: coopstep g c m c' m'),
mem_lemmas.mem_forward m m'.