With gradle plugin no amplification works for ProActive catalog

[pedrovelho]

Using catalog dspot branch here

I was able to run using the master dspot branch and the following command:
java -jar ~/.m2/repository/eu/stamp-project/dspot/2.0.1-SNAPSHOT/dspot-2.0.1-SNAPSHOT-jar-with-dependencies.jar --verbose --path-to-properties ./dspot.properties --automatic-builder GradleBuilder -t all --budgetizer SimpleBudgetizer

I always get 0 new tests no matter which amplifier I use. I tried them all.

======= REPORT =======
PitMutantScoreSelector:
The original test suite kills 192 mutants
The amplification results with 0 new tests
it kills 0 more mutants

My properties file:

project=.
src=src/main/java/
testSrc=src/test/java/
javaVersion=8
outputDirectory=result/
classes=build/classes/main/
testClasses=build/classes/test/
filter=org.ow2.proactive.catalog.*

Meanwhile I will rise an issue on the DSpot project.

Thanks in advance,