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diff --git a/src/sat/xsat/xsat.h b/src/sat/xsat/xsat.h
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+/**CFile****************************************************************
+
+  FileName    [xsat.h]
+
+  SystemName  [ABC: Logic synthesis and verification system.]
+
+  PackageName [xSAT - A SAT solver written in C. 
+               Read the license file for more info.]
+
+  Synopsis    [External definitions of the solver.]
+
+  Author      [Bruno Schmitt <boschmitt@inf.ufrgs.br>]
+
+  Affiliation [UC Berkeley / UFRGS]
+
+  Date        [Ver. 1.0. Started - November 10, 2016.]
+
+  Revision    []
+
+***********************************************************************/
+#ifndef ABC__sat__xSAT__xSAT_h
+#define ABC__sat__xSAT__xSAT_h
+
+////////////////////////////////////////////////////////////////////////
+///                          INCLUDES                                ///
+////////////////////////////////////////////////////////////////////////
+#include "misc/util/abc_global.h"
+#include "misc/vec/vecInt.h"
+
+ABC_NAMESPACE_HEADER_START
+
+////////////////////////////////////////////////////////////////////////
+///                    STRUCTURE DEFINITIONS                         ///
+////////////////////////////////////////////////////////////////////////
+struct xSAT_Solver_t_;
+typedef struct xSAT_Solver_t_ xSAT_Solver_t;
+
+////////////////////////////////////////////////////////////////////////
+///                     FUNCTION DECLARATIONS                        ///
+////////////////////////////////////////////////////////////////////////
+/*=== xsatCnfReader.c ================================================*/
+extern int xSAT_SolverParseDimacs( FILE *, xSAT_Solver_t ** );
+
+/*=== xsatSolverAPI.c ================================================*/
+extern xSAT_Solver_t * xSAT_SolverCreate();
+extern void xSAT_SolverDestroy( xSAT_Solver_t * );
+
+extern int xSAT_SolverAddClause( xSAT_Solver_t *, Vec_Int_t * );
+extern int xSAT_SolverSimplify( xSAT_Solver_t * );
+extern int xSAT_SolverSolve( xSAT_Solver_t * );
+
+extern void xSAT_SolverPrintStats( xSAT_Solver_t * );
+
+ABC_NAMESPACE_HEADER_END
+
+#endif
+////////////////////////////////////////////////////////////////////////
+///                       END OF FILE                                ///
+////////////////////////////////////////////////////////////////////////