INPUT
===================
- data sources : input_folder/jhotdraw-4-folds_input/cluster_4
- input files : 193
- minSupport : 5

OUTPUT
===================
- Step 1: Mining frequent patterns with max size constraints
	 + running time = 31s
	 + root occurrences groups = 173
- Step 2: Mining maximal patterns WITHOUT max size constraint:
	 + timeout in the second step
	 + maximal patterns: 103
	 + running time: ...1805s
