#vulnerable code 
                                @Override
    public void evaluate() throws Throwable {
        // Construct generators for each parameter
        List<Generator<?>> generators = Arrays.stream(method.getMethod().getParameters())
                .map(this::createParameterTypeContext)
                .map(this::produceGenerator)
                .collect(Collectors.toList());


        // Keep fuzzing until no more input or I/O error with guidance
        Guidance guidance = GuidedFuzzing.getGuidance();
        try {

            // Keep fuzzing as long as guidance wants to
            while (guidance.hasInput()) {
                Result result;
                Throwable error = null;

                // Initialize guided fuzzing using a file-backed random number source
                try (FileBackedRandom randomFile = new FileBackedRandom(guidance.getInputFile(), Long.BYTES)) {

                    // Generate input values
                    Object[] args;
                    try {
                        SourceOfRandomness random = new FastSourceOfRandomness(randomFile);
                        GenerationStatus genStatus = new NonTrackingGenerationStatus(random);
                        args = generators.stream()
                                .map(g -> g.generate(random, genStatus))
                                .toArray();
                    } catch (IllegalStateException e) {
                        // This happens when we reach EOF before reading all the random values.
                        // Treat this as an assumption failure, so that the guidance considers the
                        // generated input as INVALID
                        throw new AssumptionViolatedException("FileBackedRandom does not have enough data", e);
                    } catch (AssumptionViolatedException e) {
                        // Propagate assumption violations out
                        throw e;
                    } catch (Throwable e) {
                        // Throw the guidance exception outside to stop fuzzing
                        throw new GuidanceException(e);
                    } finally {
                        // System.out.println(randomFile.getTotalBytesRead() + " random bytes read");
                    }

                    // Attempt to run the trial
                    new TrialRunner(testClass.getJavaClass(), method, args).run();

                    // If we reached here, then the trial must be a success
                    result = SUCCESS;
                } catch (GuidanceException e) {
                    // Throw the guidance exception outside to stop fuzzing
                    throw e;
                } catch (AssumptionViolatedException e) {
                    result = INVALID;
                    error = e;
                } catch (Throwable e) {

                    // Check if this exception was expected
                    if (isExceptionExpected(e.getClass())) {
                        result = SUCCESS; // Swallow the error
                    } else {
                        result = FAILURE;
                        error = e;
                    }
                }

                // Wait for any instrumentation events to finish processing
                SingleSnoop.waitForQuiescence();

                // Inform guidance about the outcome of this trial
                guidance.handleResult(result, error);


            }
        } catch (GuidanceException e) {
            System.err.println("Fuzzing stopped due to guidance exception: " + e.getMessage());
        }

    } 
                            #location 20 
                            #vulnerability type RESOURCE_LEAK
#fixed code
                                @Override
    public void evaluate() throws Throwable {
        // Construct generators for each parameter
        List<Generator<?>> generators = Arrays.stream(method.getMethod().getParameters())
                .map(this::createParameterTypeContext)
                .map(this::produceGenerator)
                .collect(Collectors.toList());


        // Keep fuzzing until no more input or I/O error with guidance
        Guidance guidance = GuidedFuzzing.getGuidance();
        try {

            // Keep fuzzing as long as guidance wants to
            while (guidance.hasInput()) {
                Result result = INVALID;
                Throwable error = null;

                // Initialize guided fuzzing using a file-backed random number source
                try {
                    StreamBackedRandom randomFile = new StreamBackedRandom(guidance.getInput(), Long.BYTES);

                    // Generate input values
                    Object[] args;
                    try {
                        SourceOfRandomness random = new FastSourceOfRandomness(randomFile);
                        GenerationStatus genStatus = new NonTrackingGenerationStatus(random);
                        args = generators.stream()
                                .map(g -> g.generate(random, genStatus))
                                .toArray();
                    } catch (IllegalStateException e) {
                        // This happens when we reach EOF before reading all the random values.
                        // Treat this as an assumption failure, so that the guidance considers the
                        // generated input as INVALID
                        throw new AssumptionViolatedException("StreamBackedRandom does not have enough data", e);
                    } catch (AssumptionViolatedException e) {
                        // Propagate assumption violations out
                        throw e;
                    } catch (Throwable e) {
                        // Throw the guidance exception outside to stop fuzzing
                        throw new GuidanceException(e);
                    } finally {
                        // System.out.println(randomFile.getTotalBytesRead() + " random bytes read");
                    }

                    // Attempt to run the trial
                    new TrialRunner(testClass.getJavaClass(), method, args).run();

                    // If we reached here, then the trial must be a success
                    result = SUCCESS;
                } catch (GuidanceException e) {
                    // Throw the guidance exception outside to stop fuzzing
                    throw e;
                } catch (AssumptionViolatedException e) {
                    result = INVALID;
                    error = e;
                } catch (Throwable e) {

                    // Check if this exception was expected
                    if (isExceptionExpected(e.getClass())) {
                        result = SUCCESS; // Swallow the error
                    } else {
                        result = FAILURE;
                        error = e;
                    }
                } finally {
                    // Wait for any instrumentation events to finish processing
                    SingleSnoop.waitForQuiescence();

                    // Inform guidance about the outcome of this trial
                    guidance.handleResult(result, error);
                }


            }
        } catch (GuidanceException e) {
            System.err.println("Fuzzing stopped due to guidance exception: " + e.getMessage());
        }

    }