Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:42:49 2012 Optimize a model with 5858 rows, 870 columns and 18328 nonzeros Presolve time: 0.06s Presolved: 5858 rows, 870 columns, 25949 nonzeros Variable types: 0 continuous, 870 integer (870 binary) Found heuristic solution: objective 19.0000000 Root relaxation: objective 2.000000e+00, 2647 iterations, 0.16 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 58 19.00000 2.00000 89.5% - 0s H 0 0 11.0000000 2.00000 81.8% - 0s H 0 0 9.0000000 2.00000 77.8% - 0s 0 0 2.00000 0 58 9.00000 2.00000 77.8% - 0s H 0 0 8.0000000 2.00000 75.0% - 0s 0 0 2.00000 0 58 8.00000 2.00000 75.0% - 0s 0 0 2.00000 0 58 8.00000 2.00000 75.0% - 0s 0 0 2.00000 0 58 8.00000 2.00000 75.0% - 0s 0 0 2.00000 0 58 8.00000 2.00000 75.0% - 0s 0 0 2.00000 0 58 8.00000 2.00000 75.0% - 0s 0 2 2.00000 0 58 8.00000 2.00000 75.0% - 0s * 41 15 31 7.0000000 3.00000 57.1% 216 2s 192 82 6.00000 16 63 7.00000 4.00000 42.9% 190 5s 472 159 5.00000 7 92 7.00000 4.50000 35.7% 172 10s 609 218 6.00000 10 46 7.00000 6.00000 14.3% 168 16s 614 224 6.00000 24 116 7.00000 6.00000 14.3% 190 20s 635 224 infeasible 33 7.00000 6.00000 14.3% 195 25s 695 200 6.00000 29 125 7.00000 6.00000 14.3% 204 30s Explored 726 nodes (153146 simplex iterations) in 31.52 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%