(1,2) (3,8) (4,14) (5,11) (6,7) (9,18) (10,20) (12,15) (13,16) (17,19) 
(1,2) (3,8) (4,14) (5,7) (6,11) (9,18) (10,20) (12,15) (13,16) (17,19) 
(1,2) (3,10) (4,14) (5,11) (6,7) (8,19) (9,18) (12,15) (13,16) (17,20) 
(1,2) (3,10) (4,14) (5,7) (6,11) (8,19) (9,18) (12,15) (13,16) (17,20) 
nodes: 7  modelTime: 205  solveTime: 123  totalTime: 330  modelSize: 7735  readTime: 2