add abstraction and instantiation

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

src/muz_qe/dl_mk_quantifier_abstraction.h

@@ -0,0 +1,61 @@
+/*++
+Copyright (c) 2013 Microsoft Corporation
+
+Module Name:
+
+    dl_mk_quantifier_abstraction.h
+
+Abstract:
+
+    Convert clauses with array arguments to predicates 
+    into Quantified Horn clauses.
+
+Author:
+
+    Ken McMillan 
+    Andrey Rybalchenko
+    Nikolaj Bjorner (nbjorner) 2013-04-02
+
+Revision History:
+
+    Based on approach suggested in SAS 2013 paper 
+    "On Solving Universally Quantified Horn Clauses"    
+
+--*/
+#ifndef _DL_MK_QUANTIFIER_ABSTRACTION_H_
+#define _DL_MK_QUANTIFIER_ABSTRACTION_H_
+
+
+#include"dl_rule_transformer.h"
+#include"array_decl_plugin.h"
+
+namespace datalog {
+
+    class context;
+
+    class mk_quantifier_abstraction : public rule_transformer::plugin {
+        ast_manager& m;
+        context&     m_ctx;
+        array_util   a;
+        func_decl_ref_vector m_refs;
+        obj_map<func_decl, func_decl*> m_new2old;
+        obj_map<func_decl, func_decl*> m_old2new;
+
+        func_decl* declare_pred(func_decl* old_p);
+        app_ref mk_head(app* p, unsigned idx);
+        app_ref mk_tail(app* p);
+
+    public:
+        mk_quantifier_abstraction(context & ctx, unsigned priority);
+
+        virtual ~mk_quantifier_abstraction();
+        
+        rule_set * operator()(rule_set const & source);
+    };
+
+
+
+};
+
+#endif /* _DL_MK_QUANTIFIER_ABSTRACTION_H_ */
+