Set soft memory limit of 8192 MB

This sets a soft memory limit of 8192 MB on all configurations. This is
a hint to the planners that they shouldn’t surpass this limit. Should
planners still consume more memory, there is a 1024 MB tolerance margin
(configured in the benchmark runner’s configuration) after which the
measurement is counted as a memout.

Note that this 8192 MB is the default for Madagascar, which is why this
addition doesn’t have an influence on prior results obtained for
Madagascar.

configurations.yml

@@ -3,6 +3,7 @@ options:
   - "--stats"
   - "--verbose"
   - "--print-call"
+  - "-m 8192"
   fastDownwardPreprocessing: &fastDownwardPreprocessing
   - "--translate"
   plannerSequential: &plannerSequential