package catala

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Generates verification conditions from scope definitions

type verification_condition_kind =

| NoEmptyError
(*
This verification condition checks whether a definition never returns an empty error
*)
| NoOverlappingExceptions
(*
This verification condition checks whether a definition never returns a conflict error
*)

type verification_condition = {

vc_guard : Dcalc.Ast.expr Utils.Pos.marked;
(*
This expression should have type bool
*)
vc_kind : verification_condition_kind;
vc_scope : Dcalc.Ast.ScopeName.t;
vc_variable : Dcalc.Ast.Var.t Utils.Pos.marked;
vc_free_vars_typ : Dcalc.Ast.typ Utils.Pos.marked Dcalc.Ast.VarMap.t;
(*
Types of the locally free variables in vc_guard. The types of other free variables linked to scope variables can be obtained with Dcalc.Ast.variable_types.
*)

}

val generate_verification_conditions : 
  Dcalc.Ast.program ->
  verification_condition list