3 files changed, 4 insertions, 4 deletions
diff --git a/lib/Solver/CachingSolver.cpp b/lib/Solver/CachingSolver.cpp
index d353e485..c0b77429 100644
--- a/lib/Solver/CachingSolver.cpp
+++ b/lib/Solver/CachingSolver.cpp
@@ -89,7 +89,7 @@ public:
     the canonicalization process. */
 ref<Expr> CachingSolver::canonicalizeQuery(ref<Expr> originalQuery,
                                            bool &negationUsed) {
-  ref<Expr> negatedQuery = Expr::createNot(originalQuery);
+  ref<Expr> negatedQuery = Expr::createIsZero(originalQuery);
 
   // select the "smaller" query to the be canonical representation
   if (originalQuery.compare(negatedQuery) < 0) {
diff --git a/lib/Solver/CexCachingSolver.cpp b/lib/Solver/CexCachingSolver.cpp
index 373f42d9..2bdc7418 100644
--- a/lib/Solver/CexCachingSolver.cpp
+++ b/lib/Solver/CexCachingSolver.cpp
@@ -137,7 +137,7 @@ bool CexCachingSolver::searchForAssignment(KeyType &key, Assignment *&result) {
 bool CexCachingSolver::lookupAssignment(const Query &query, 
                                         Assignment *&result) {
   KeyType key(query.constraints.begin(), query.constraints.end());
-  ref<Expr> neg = Expr::createNot(query.expr);
+  ref<Expr> neg = Expr::createIsZero(query.expr);
   if (ConstantExpr *CE = dyn_cast<ConstantExpr>(neg)) {
     if (CE->isFalse()) {
       result = (Assignment*) 0;
@@ -152,7 +152,7 @@ bool CexCachingSolver::lookupAssignment(const Query &query,
 
 bool CexCachingSolver::getAssignment(const Query& query, Assignment *&result) {
   KeyType key(query.constraints.begin(), query.constraints.end());
-  ref<Expr> neg = Expr::createNot(query.expr);
+  ref<Expr> neg = Expr::createIsZero(query.expr);
   if (ConstantExpr *CE = dyn_cast<ConstantExpr>(neg)) {
     if (CE->isFalse()) {
       result = (Assignment*) 0;
diff --git a/lib/Solver/Solver.cpp b/lib/Solver/Solver.cpp
index f8f9d690..abff5743 100644
--- a/lib/Solver/Solver.cpp
+++ b/lib/Solver/Solver.cpp
@@ -349,7 +349,7 @@ ValidatingSolver::computeInitialValues(const Query& query,
       }
     }
     ConstraintManager tmp(bindings);
-    ref<Expr> constraints = Expr::createNot(query.expr);
+    ref<Expr> constraints = Expr::createIsZero(query.expr);
     for (ConstraintManager::const_iterator it = query.constraints.begin(), 
            ie = query.constraints.end(); it != ie; ++it)
       constraints = AndExpr::create(constraints, *it);