René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Engine sets the hidden `SecurityManager` static field","articleBody":"**Description**\r\n\r\nEngine produces `staticsBefore` with the hidden `SecurityManager` static field. The concrete executor can't find this field, so it isn't present in `staticsAfter`. This leads to test generation failure as we expect `staticsBefore` and `staticsAfter` to have the same structure. \r\n\r\n**To Reproduce**\r\n\r\nSteps to reproduce the behavior:\r\n\r\n1. Create this method:\r\n```java\r\n    public void createThread() {\r\n        final int[] x = {0};\r\n        new Thread(() -\u003e {\r\n            x[0]++;\r\n        }).start();\r\n        new Thread(() -\u003e {\r\n            x[0]++;\r\n        }).start();\r\n    }\r\n```\r\n2. Run test generation via UtBot plugin\r\n\r\n**Expected behavior**\r\n\r\nAt least one test generated and there are no tests with internal exceptions.\r\n\r\n**Actual behavior**\r\n\r\nThere is a generated test with an internal exception.\r\n\r\n**Visual proofs (screenshots, logs, images)**\r\n\r\n![image](https://user-images.githubusercontent.com/30112817/183869191-cf142d7b-b599-4619-b1b1-464a9b993ba0.png)","author":{"url":"https://github.com/sergeypospelov","@type":"Person","name":"sergeypospelov"},"datePublished":"2022-08-10T09:38:49.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/697/UTBotJava/issues/697"}