anchor.diff:      seq
         randomState.cntrl.init;
         testDone <= False;
  +      params.preStmt;
         $display("=== Depth %0d, Test %0d ===", currentDepth, testNum);
         while (! testDone)
           action
  
positive.code:                       end
                    endaction
                  testNum <= testNum+1;
                  idParams.rst.assertReset();
                endseq
              currentDepth <= idParams.incDepth(currentDepth);
  
negative.code:     BlueCheck_Params {
        showNonFire        : False
      , showNoOp           : False
      , preStmt            : seq delay(1); endseq
      , postStmt           : seq delay(1); endseq
      , iterativeDeepening : tagged Valid idParams
      , numIterations      : 3
      };
  