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diff --git a/src/theory/idl/idl_assertion_db.h b/src/theory/idl/idl_assertion_db.h
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--- a/src/theory/idl/idl_assertion_db.h
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@@ -1,86 +0,0 @@
-/*********************                                                        */
-/*! \file idl_assertion_db.h
- ** \verbatim
- ** Top contributors (to current version):
- **   Dejan Jovanovic, Morgan Deters
- ** This file is part of the CVC4 project.
- ** Copyright (c) 2009-2019 by the authors listed in the file AUTHORS
- ** in the top-level source directory) and their institutional affiliations.
- ** All rights reserved.  See the file COPYING in the top-level source
- ** directory for licensing information.\endverbatim
- **
- ** \brief [[ Add one-line brief description here ]]
- **
- ** [[ Add lengthier description here ]]
- ** \todo document this file
- **/
-
-#pragma once
-
-#include "theory/idl/idl_assertion.h"
-#include "context/cdlist.h"
-
-namespace CVC4 {
-namespace theory {
-namespace idl {
-
-/**
- * Context-dependent database assertions, organized by variable. Each variable
- * can be associated a list of IDL assertions. The list of assertions can
- * be iterated over using the provided iterator class.
- */
-class IDLAssertionDB {
-
-  /** Elements of the assertion lists */
-  struct IDLAssertionListElement {
-    /** The assertion itself */
-    IDLAssertion d_assertion;
-    /** The index of the previous element (-1 for null) */
-    unsigned d_previous;
-
-    IDLAssertionListElement(const IDLAssertion& assertion, unsigned previous)
-    : d_assertion(assertion), d_previous(previous)
-    {}
-  };
-
-  /** All assertions in a context dependent stack */
-  context::CDList<IDLAssertionListElement> d_assertions;
-
-  typedef context::CDHashMap<TNode, unsigned, TNodeHashFunction> var_to_unsigned_map;
-
-  /** Map from variables to the first element of their list */
-  var_to_unsigned_map d_variableLists;
-
-public:
-
-  /** Create a new assertion database */
-  IDLAssertionDB(context::Context* c);
-
-  /** Add a new assertion, attach to the list of the given variable */
-  void add(const IDLAssertion& assertion, TNode var);
-
-  /** Iteration over the constraints of a variable */
-  class iterator {
-    /** The database */
-    const IDLAssertionDB& d_db;
-    /** Index of the current constraint */
-    unsigned d_current;
-  public:
-    /** Construct the iterator for the variable */
-    iterator(IDLAssertionDB& db, TNode var);
-    /** Is this iterator done */
-    bool done() const { return d_current == (unsigned)(-1); }
-    /** Next element */
-    void next();
-    /** Get the assertion */
-    IDLAssertion get() const;
-  };
-};
-
-}
-}
-}
-
-
-
-