Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:53:28 2013 Optimize a model with 1300 rows, 27950 columns and 71100 nonzeros Presolve removed 50 rows and 50 columns Presolve time: 0.11s Presolved: 1250 rows, 27900 columns, 68550 nonzeros Variable types: 27600 continuous, 300 integer (300 binary) Root relaxation: objective 2.208160e+05, 2131 iterations, 0.08 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 220815.985 0 12 - 220815.985 - - 0s 0 0 220849.135 0 9 - 220849.135 - - 0s 0 0 220849.340 0 12 - 220849.340 - - 0s 0 0 220850.941 0 13 - 220850.941 - - 0s 0 0 220850.941 0 13 - 220850.941 - - 0s 0 0 220851.528 0 13 - 220851.528 - - 0s 0 0 220851.842 0 13 - 220851.842 - - 0s 0 0 220851.899 0 10 - 220851.899 - - 0s 0 0 220851.899 0 10 - 220851.899 - - 0s 0 0 220852.449 0 14 - 220852.449 - - 0s 0 0 220853.778 0 15 - 220853.778 - - 1s 0 0 220854.246 0 10 - 220854.246 - - 1s 0 0 220854.301 0 11 - 220854.301 - - 1s 0 0 220854.301 0 11 - 220854.301 - - 1s H 0 0 280632.28147 220854.301 21.3% - 2s 0 2 220855.386 0 11 280632.281 220855.386 21.3% - 2s H 27 17 221511.12951 221048.064 0.21% 32.6 3s H 82 21 221487.56994 221259.443 0.10% 28.9 3s * 89 25 25 221480.44026 221259.443 0.10% 27.5 3s H 109 29 221476.95360 221270.604 0.09% 24.3 3s Cutting planes: Flow cover: 14 Explored 145 nodes (6420 simplex iterations) in 4.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.214769535973e+05, best bound 2.214577833899e+05, gap 0.0087%