In method ConnectionTestLibrary.addNode a random int in range -9..+9 is generated and might result into negative value for retryOpenTime:

Caused by: java.lang.IllegalArgumentException: Invalid range: -2, expected: [[0..65535]].
at org.opendaylight.yang.gen.v1.urn.opendaylight.sxp.node.rev160308.sxp.node.identity.fields.TimersBuilder.checkRetryOpenTimeRange(TimersBuilder.java:265)
at org.opendaylight.yang.gen.v1.urn.opendaylight.sxp.node.rev160308.sxp.node.identity.fields.TimersBuilder.setRetryOpenTime(TimersBuilder.java:270)
at org.opendaylight.sxp.csit.libraries.ConnectionTestLibrary.addNode(ConnectionTestLibrary.java:111)
... 38 more