first attempts at getting to the bvsls from opt_context.

src/tactic/sls/bvsls_opt_engine.h

@@ -0,0 +1,42 @@
+/*++
+Copyright (c) 2014 Microsoft Corporation
+
+Module Name:
+
+    bvsls_opt_engine.h
+
+Abstract:
+
+    Optimization extensions to bvsls
+
+Author:
+
+    Christoph (cwinter) 2014-03-28
+
+Notes:
+
+--*/
+#ifndef _BVSLS_OPT_ENGINE_H_
+#define _BVSLS_OPT_ENGINE_H_
+
+#include "sls_engine.h"
+
+class bvsls_opt_engine : public sls_engine {
+public:
+    bvsls_opt_engine(ast_manager & m, params_ref const & p);
+    ~bvsls_opt_engine();
+
+    class optimization_result {
+    public:
+        lbool is_sat;
+        expr_ref optimum;
+        optimization_result(ast_manager & m) : is_sat(l_undef), optimum(m) {}
+    };
+
+    optimization_result optimize(expr_ref const & objective);
+
+protected:
+    expr_ref maximize(expr_ref const & objective);
+};
+
+#endif