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java.lang.NullPointerException: 	at java.lang.StringBuilder.(StringBuilder.java:112)	at com.microsoft.sqlserver.jdbc.SQLServerException.checkAndAppendClientConnId(SQLServerException.java:348)	at com.microsoft.sqlserver.jdbc.SQLServerConnection.terminate(SQLServerConnection.java:2507)	at com.microsoft.sqlserver.jdbc.SQLServerConnection.terminate(SQLServerConnection.java:2491)	at com.microsoft.sqlserver.jdbc.TDSChannel.read(IOBuffer.java:2013)	at com.microsoft.sqlserver.jdbc.SQLServerConnection.Prelogin(SQLServerConnection.java:2244)	at com.microsoft.sqlserver.jdbc.SQLServerConnection.connectHelper(SQLServerConnection.java:2080)	at com.microsoft.sqlserver.jdbc.SQLServerConnection.login(SQLServerConnection.java:1731)	at com.microsoft.sqlserver.jdbc.SQLServerConnection.connectInternal(SQLServerConnection.java:1562)	at com.microsoft.sqlserver.jdbc.SQLServerConnection.connect(SQLServerConnection.java:855)	at com.microsoft.sqlserver.jdbc.SQLServerDataSource.getConnectionInternal(SQLServerDataSource.java:842)	at com.microsoft.sqlserver.jdbc.SQLServerDataSource.getConnection(SQLServerDataSource.java:83)	at com.test.SoTimeoutTest.testSoTimeout(SoTimeoutTest.java:61)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:498)	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:69)	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:48)	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)	at org.junit.runners.ParentRunner.run(ParentRunner.java:292)	at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)	at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:678)	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)