Z3 sources

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>

lib/pdr_dl_interface.h

@@ -0,0 +1,74 @@
+/*++
+Copyright (c) 2011 Microsoft Corporation
+
+Module Name:
+
+    pdr_dl_interface.h
+
+Abstract:
+
+    SMT2 interface for the datalog PDR
+
+Author:
+
+    Krystof Hoder (t-khoder) 2011-9-22.
+
+Revision History:
+
+--*/
+
+#ifndef _PDR_DL_INTERFACE_H_
+#define _PDR_DL_INTERFACE_H_
+
+#include "lbool.h"
+#include "dl_rule.h"
+#include "dl_rule_set.h"
+#include "statistics.h"
+
+namespace datalog {
+    class context;
+}
+
+namespace pdr {
+
+    class context;
+
+    class dl_interface {
+        datalog::context& m_ctx;
+        datalog::rule_set m_pdr_rules;
+        datalog::rule_set m_old_rules;
+        context* m_context;
+
+        void check_reset();
+
+    public:
+        dl_interface(datalog::context& ctx); 
+        ~dl_interface();
+        
+        lbool query(expr* query);
+
+        void cancel();
+
+        void cleanup();
+
+        void display_certificate(std::ostream& out) const;
+
+        void collect_statistics(statistics& st) const;
+
+        expr_ref get_answer();
+
+        unsigned get_num_levels(func_decl* pred);
+
+        expr_ref get_cover_delta(int level, func_decl* pred);
+       
+        void add_cover(int level, func_decl* pred, expr* property);
+
+        static void collect_params(param_descrs& p);
+
+        void updt_params();
+        
+    };
+}
+
+
+#endif