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diff --git a/casa/covering/space/CoveringArraySpace.H b/casa/covering/space/CoveringArraySpace.H
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+// Copyright 2008, 2009 Brady J. Garvin
+
+// This file is part of Covering Arrays by Simulated Annealing (CASA).
+
+// CASA is free software: you can redistribute it and/or modify it
+// under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// CASA is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with CASA.  If not, see <http://www.gnu.org/licenses/>.
+
+
+#ifndef COVERING_ARRAY_SPACE_H
+#define COVERING_ARRAY_SPACE_H
+
+#include <cassert>
+
+#include "Array.H"
+
+#include "search/StateSpace.H"
+
+#include "covering/state/CoveringArray.H"
+#include "covering/bookkeeping/Options.H"
+#include "covering/cost/CoverageCost.H"
+
+#include "sat/SAT.H"
+
+class CoveringArraySpace : public StateSpace<CoveringArray, CoverageCost>{
+protected:
+  unsigned				strength;
+  Options				options;
+  mutable SATSolver			solver;
+public:
+  CoveringArraySpace(unsigned strength, Options options);
+  virtual ~CoveringArraySpace() {}
+  virtual CoveringArray createStartState(unsigned rows) const = 0;
+  SATSolver&getSolver() {
+    return solver;
+  }
+  const SATSolver&getSolver() const {
+    return solver;
+  }
+  unsigned computeTargetCoverage() const;
+};
+
+#endif