squash-merge from proof branch

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diff --git a/src/proof/arith_proof.h b/src/proof/arith_proof.h
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+/*********************                                                        */
+/*! \file arith_proof.h
+ ** \verbatim
+ ** Original author: Liana Hadarean
+ ** Major contributors: none
+ ** Minor contributors (to current version): none
+ ** This file is part of the CVC4 project.
+ ** Copyright (c) 2009-2014  New York University and The University of Iowa
+ ** See the file COPYING in the top-level source directory for licensing
+ ** information.\endverbatim
+ **
+ ** \brief Arith proof
+ **
+ ** Arith proof
+ **/
+
+#include "cvc4_private.h"
+
+#ifndef __CVC4__ARITH__PROOF_H
+#define __CVC4__ARITH__PROOF_H
+
+#include "expr/expr.h"
+#include "proof/proof_manager.h"
+#include "proof/theory_proof.h"
+#include "theory/uf/equality_engine.h"
+
+namespace CVC4 {
+
+//proof object outputted by TheoryArith
+class ProofArith : public Proof {
+private:
+  static Node toStreamRecLFSC(std::ostream& out, TheoryProof * tp, theory::eq::EqProof * pf, unsigned tb, const LetMap& map);
+public:
+  ProofArith( theory::eq::EqProof * pf ) : d_proof( pf ) {}
+  //it is simply an equality engine proof
+  theory::eq::EqProof * d_proof;
+  void toStream(std::ostream& out);
+  static void toStreamLFSC(std::ostream& out, TheoryProof * tp, theory::eq::EqProof * pf, const LetMap& map);
+};
+
+
+namespace theory {
+namespace arith {
+class TheoryArith;
+}
+}
+
+typedef __gnu_cxx::hash_set<Type, TypeHashFunction > TypeSet;
+
+
+class ArithProof : public TheoryProof {
+protected:
+  // std::map<Expr, std::string> d_constRationalString; // all the variable/function declarations
+
+  //   TypeSet d_sorts;        // all the uninterpreted sorts in this theory
+  // ExprSet d_declarations; // all the variable/function declarations
+
+  bool d_realMode;
+
+public:
+  ArithProof(theory::arith::TheoryArith* arith, TheoryProofEngine* proofEngine);
+
+  virtual void registerTerm(Expr term);
+};
+
+class LFSCArithProof : public ArithProof {
+public:
+  LFSCArithProof(theory::arith::TheoryArith* arith, TheoryProofEngine* proofEngine)
+    : ArithProof(arith, proofEngine)
+  {}
+  virtual void printOwnedTerm(Expr term, std::ostream& os, const LetMap& map);
+  virtual void printOwnedSort(Type type, std::ostream& os);
+  virtual void printTheoryLemmaProof(std::vector<Expr>& lemma, std::ostream& os, std::ostream& paren);
+  virtual void printSortDeclarations(std::ostream& os, std::ostream& paren);
+  virtual void printTermDeclarations(std::ostream& os, std::ostream& paren);
+  virtual void printDeferredDeclarations(std::ostream& os, std::ostream& paren);
+};
+
+
+}/* CVC4 namespace */
+
+#endif /* __CVC4__ARITH__PROOF_H */