anchor.diff:      emit(rand.nextInt(2) == 0 ? 'true' : 'false');
     }
   
  -  void emitSmallPositiveInt() {
  -    emit('${rand.nextInt(100)}');
  +  void emitSmallPositiveInt({int limit = 100}) {
  +    emit('${rand.nextInt(limit)}');
     }
   
     void emitSmallNegativeInt() {
  
positive.code: // Version of DartFuzz. Increase this each time changes are made
  // to preserve the property that a given version of DartFuzz yields
  // the same fuzzed program for a deterministic random seed.
  const String version = '1.48';
  
  // Restriction on statements and expressions.
  const int stmtDepth = 1;
  
negative.code:           switch (rand.nextInt(3)) {
              case 0:
                emit('= 0; $localName$i < ');
                emitSmallPositiveInt(limit: 16);
                emit('; $localName$i++) ');
                break;
              case 1:
  