Gurobi 5.0.1 (linux64) logging started Wed Apr 24 13:44:39 2013 Optimize a model with 2860 rows, 676260 columns and 1352260 nonzeros Presolve time: 2.87s Presolved: 2860 rows, 676260 columns, 1352260 nonzeros Variable types: 676000 continuous, 260 integer (260 binary) Root relaxation: objective 6.319297e+05, 23711 iterations, 4.66 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 631929.687 0 5 - 631929.687 - - 8s H 0 0 660343.00000 631929.687 4.30% - 10s H 0 0 633669.00000 631929.687 0.27% - 12s 0 0 632159.653 0 4 633669.000 632159.653 0.24% - 13s 0 0 632159.653 0 5 633669.000 632159.653 0.24% - 18s 0 0 632159.653 0 3 633669.000 632159.653 0.24% - 21s 0 0 632204.048 0 5 633669.000 632204.048 0.23% - 22s 0 0 632221.203 0 3 633669.000 632221.203 0.23% - 23s 0 0 632222.048 0 3 633669.000 632222.048 0.23% - 24s 0 0 632226.815 0 3 633669.000 632226.815 0.23% - 24s 0 0 632227.522 0 2 633669.000 632227.522 0.23% - 25s 0 0 632227.522 0 2 633669.000 632227.522 0.23% - 25s 0 2 632250.984 0 2 633669.000 632250.984 0.22% - 28s 2 5 632419.286 2 2 633669.000 632360.453 0.21% 442 30s H 7 6 633592.00000 632360.453 0.19% 203 32s H 8 7 633480.00000 632360.453 0.18% 182 32s 14 9 633022.080 13 1 633480.000 632360.453 0.18% 163 35s H 17 8 633304.00000 632360.453 0.15% 139 35s * 18 6 17 633188.00000 632360.453 0.13% 134 35s 26 10 632644.016 5 1 633188.000 632444.279 0.12% 216 40s 41 7 632997.800 6 1 633188.000 632646.040 0.09% 225 45s * 43 5 7 633171.00000 632646.040 0.08% 220 45s H 46 4 633029.00000 632666.624 0.06% 229 46s * 47 4 6 633009.00000 632666.624 0.05% 225 47s Cutting planes: Implied bound: 197 Flow cover: 1 Explored 54 nodes (47688 simplex iterations) in 49.28 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.330090000000e+05, best bound 6.330090000000e+05, gap 0.0%