- extend cvc4 frontend parser to accept relational operators (product,

join, transpose, transitive closure)
- added a finite relations module to collect all relational terms in EE

1 files changed, 16 insertions, 0 deletions

diff --git a/src/printer/cvc/cvc_printer.cpp b/src/printer/cvc/cvc_printer.cpp
index 25f958963..db4949c1f 100644
--- a/src/printer/cvc/cvc_printer.cpp
+++ b/src/printer/cvc/cvc_printer.cpp
@@ -738,6 +738,22 @@ void CvcPrinter::toStream(std::ostream& out, TNode n, int depth, bool types, boo
       op << "IS_IN";
       opType = INFIX;
       break;
+    case kind::PRODUCT:
+      op << "PRODUCT";
+      opType = INFIX;
+      break;
+    case kind::JOIN:
+      op << "JOIN";
+      opType = INFIX;
+      break;
+    case kind::TRANSPOSE:
+      op << "TRANSPOSE";
+      opType = PREFIX;
+      break;
+    case kind::TRANSCLOSURE:
+      op << "TRANSCLOSURE";
+      opType = PREFIX;
+      break;
     case kind::SINGLETON:
       out << "{";
       toStream(out, n[0], depth, types, false);