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diff --git a/src/util/predicate.cpp b/src/util/predicate.cpp
deleted file mode 100644
index 787d329aa..000000000
--- a/src/util/predicate.cpp
+++ /dev/null
@@ -1,55 +0,0 @@
-/*********************                                                        */
-/*! \file predicate.cpp
- ** \verbatim
- ** Original author: Morgan Deters
- ** 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 Representation of predicates for predicate subtyping
- **
- ** Simple class to represent predicates for predicate subtyping.
- ** Instances of this class are carried as the payload of
- ** the CONSTANT-metakinded SUBTYPE_TYPE types.
- **/
-
-#include "expr/expr.h"
-#include "util/predicate.h"
-#include "util/cvc4_assert.h"
-
-using namespace std;
-
-namespace CVC4 {
-
-Predicate::Predicate(Expr e, Expr w) throw(IllegalArgumentException) : d_predicate(e), d_witness(w) {
-  CheckArgument(! e.isNull(), e, "Predicate cannot be null");
-  CheckArgument(e.getType().isPredicate(), e, "Expression given is not predicate");
-  CheckArgument(FunctionType(e.getType()).getArgTypes().size() == 1, e, "Expression given is not predicate of a single argument");
-}
-
-Predicate::operator Expr() const {
-  return d_predicate;
-}
-
-bool Predicate::operator==(const Predicate& p) const {
-  return d_predicate == p.d_predicate && d_witness == p.d_witness;
-}
-
-std::ostream&
-operator<<(std::ostream& out, const Predicate& p) {
-  out << p.d_predicate;
-  if(! p.d_witness.isNull()) {
-    out << " : " << p.d_witness;
-  }
-  return out;
-}
-
-size_t PredicateHashFunction::operator()(const Predicate& p) const {
-  ExprHashFunction h;
-  return h(p.d_witness) * 5039 + h(p.d_predicate);
-}
-
-}/* CVC4 namespace */