Fix printing for double patterns (#6235)

diff --git a/src/printer/smt2/smt2_printer.cpp b/src/printer/smt2/smt2_printer.cpp
index 3e99267ccbfbdcb11fd2a762ab3fc7c15cebf2a7..af555d29869aefff098c3f269354ff9b374a8e01 100644 (file)
--- a/src/printer/smt2/smt2_printer.cpp
+++ b/src/printer/smt2/smt2_printer.cpp
@@ -942,22 +942,33 @@ void Smt2Printer::toStream(std::ostream& out,
     // do not letify the bound variable list
     toStream(out, n[0], toDepth, nullptr);
     out << " ";
+    std::stringstream annot;
     if (n.getNumChildren() == 3)
     {
-      out << "(! ";
+      annot << " ";
+      for (const Node& nc : n[2])
+      {
+        if (nc.getKind() == kind::INST_PATTERN)
+        {
+          out << "(! ";
+          annot << ":pattern ";
+          toStream(annot, nc, toDepth, nullptr);
+          annot << ") ";
+        }
+        else if (nc.getKind() == kind::INST_NO_PATTERN)
+        {
+          out << "(! ";
+          annot << ":no-pattern ";
+          toStream(annot, nc, toDepth, nullptr);
+          annot << ") ";
+        }
+      }
     }
     // Use a fresh let binder, since using existing let symbols may violate
     // scoping issues for let-bound variables, see explanation in let_binding.h.
     size_t dag = lbind == nullptr ? 0 : lbind->getThreshold()-1;
     toStream(out, n[1], toDepth - 1, dag);
-    if (n.getNumChildren() == 3)
-    {
-      out << " ";
-      // do not letify the annotation
-      toStream(out, n[2], toDepth, nullptr);
-      out << ")";
-    }
-    out << ")";
+    out << annot.str() << ")";
     return;
     break;
   }
@@ -980,23 +991,8 @@ void Smt2Printer::toStream(std::ostream& out,
     return;
   }
   case kind::INST_PATTERN:
-  case kind::INST_NO_PATTERN: break;
-  case kind::INST_PATTERN_LIST:
-  {
-    for (const Node& nc : n)
-    {
-      if (nc.getKind() == kind::INST_PATTERN)
-      {
-        out << ":pattern " << nc;
-      }
-      else if (nc.getKind() == kind::INST_NO_PATTERN)
-      {
-        out << ":no-pattern " << nc[0];
-      }
-    }
-    return;
-    break;
-  }
+  case kind::INST_NO_PATTERN:
+  case kind::INST_PATTERN_LIST: break;
   default:
     // fall back on however the kind prints itself; this probably
     // won't be SMT-LIB v2 compliant, but it will be clear from the