1 files changed, 3 insertions, 4 deletions
diff --git a/src/theory/quantifiers/model_builder.cpp b/src/theory/quantifiers/model_builder.cpp
index 7bbe06108..b30c2addb 100644
--- a/src/theory/quantifiers/model_builder.cpp
+++ b/src/theory/quantifiers/model_builder.cpp
@@ -391,7 +391,7 @@ bool QModelBuilderIG::isTermActive( Node n ){
 
 
 //do exhaustive instantiation
-bool QModelBuilderIG::doExhaustiveInstantiation( FirstOrderModel * fm, Node f, int effort ) {
+int QModelBuilderIG::doExhaustiveInstantiation( FirstOrderModel * fm, Node f, int effort ) {
   if( optUseModel() ){
     RepSetIterator riter( d_qe, &(d_qe->getModel()->d_rep_set) );
     if( riter.setQuantifier( f ) ){
@@ -470,10 +470,9 @@ bool QModelBuilderIG::doExhaustiveInstantiation( FirstOrderModel * fm, Node f, i
       }
     }
     //if the iterator is incomplete, we will return unknown instead of sat if no instantiations are added this round
-    d_incomplete_check = riter.isIncomplete();
-    return true;
+    return riter.isIncomplete() ? -1 : 1;
   }else{
-    return false;
+    return 0;
   }
 }