2020-10-09 09:47:16 - WARNING - __main__ - parsing duration: 0.065 2020-10-09 09:47:16 - WARNING - __main__ - grounding duration: 0.005 2020-10-09 09:47:16 - WARNING - __main__ - solving duration: 0.010 ==> 1 (noop1 ) 2 (noop2 ) 3 (noop1 ) 4 (noop2 ) 5 (noop1 ) 6 (noop2 ) 7 (noop1 ) 8 (noop2 ) root 10 11 12 13 10 (task1 ) -> sequence1 1 2 11 (task2 ) -> sequence2 3 4 12 (task3 ) -> sequence3 5 6 13 (task4 ) -> sequence4 7 8 <==