add n-ary disjunction and conjunction

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

src/smt/smt_failure.h

@@ -32,6 +32,7 @@ namespace smt {
         CANCELED,      //!< External cancel flag was set
         NUM_CONFLICTS, //!< Maximum number of conflicts was reached
         THEORY,        //!< Theory is incomplete
+        RESOURCE_LIMIT,
         QUANTIFIERS    //!< Logical context contains universal quantifiers.
     };