Using 12s as timeout for all tests, as a workaround for #146.

4 jobs for master in 21 minutes and 29 seconds (queued for 1 second)
Name Stage Failure
failed
java10 Test
219134 [ERROR] 
219134 [ERROR] Re-run Maven using the -X switch to enable full debug logging.
219134 [ERROR]
219134 [ERROR] For more information about the errors and possible solutions, please read the following articles:
219134 [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException
219134 [ERROR]
219134 [ERROR] After correcting the problems, you can resume the build with the command
219135 [ERROR] mvn <goals> -rf :org.ow2.sat4j.core
ERROR: Job failed: exit code 1
failed
java7 Test
215450 [ERROR] 
215450 [ERROR] Re-run Maven using the -X switch to enable full debug logging.
215450 [ERROR]
215450 [ERROR] For more information about the errors and possible solutions, please read the following articles:
215451 [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException
215451 [ERROR]
215451 [ERROR] After correcting the problems, you can resume the build with the command
215451 [ERROR] mvn <goals> -rf :org.ow2.sat4j.core
ERROR: Job failed: exit code 1