1 files changed, 2 insertions, 0 deletions
diff --git a/src/main/driver_unified.cpp b/src/main/driver_unified.cpp
index c011671f8..c3372d2c8 100644
--- a/src/main/driver_unified.cpp
+++ b/src/main/driver_unified.cpp
@@ -202,6 +202,8 @@ int runCvc4(int argc, char* argv[], Options& opts) {
       } else if((len >= 3 && !strcmp(".sy", filename + len - 3))
                 || (len >= 3 && !strcmp(".sl", filename + len - 3))) {
         opts.set(options::inputLanguage, language::input::LANG_SYGUS);
+        //since there is no sygus output language, set this to SMT lib 2
+        opts.set(options::outputLanguage, language::output::LANG_SMTLIB_V2_0);
       }
     }
   }