Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:45:38 2012 Optimize a model with 6570 rows, 930 columns and 20520 nonzeros Presolve time: 0.06s Presolved: 6570 rows, 930 columns, 27422 nonzeros Variable types: 0 continuous, 930 integer (930 binary) Found heuristic solution: objective 17.0000000 Root relaxation: objective 2.000000e+00, 884 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 60 17.00000 2.00000 88.2% - 0s H 0 0 12.0000000 2.00000 83.3% - 0s H 0 0 9.0000000 2.00000 77.8% - 0s 0 0 2.00000 0 60 9.00000 2.00000 77.8% - 0s H 0 0 8.0000000 2.00000 75.0% - 0s 0 0 2.00000 0 60 8.00000 2.00000 75.0% - 0s 0 0 2.00000 0 60 8.00000 2.00000 75.0% - 1s 0 0 2.00000 0 60 8.00000 2.00000 75.0% - 1s 0 0 2.00000 0 60 8.00000 2.00000 75.0% - 2s 0 0 2.00000 0 60 8.00000 2.00000 75.0% - 2s H 0 0 7.0000000 2.00000 71.4% - 3s 0 2 2.00000 0 60 7.00000 2.00000 71.4% - 3s 8 10 5.33333 5 120 7.00000 3.00000 57.1% 1090 5s 173 81 5.00000 5 62 7.00000 4.00000 42.9% 299 10s 371 115 5.00000 8 62 7.00000 4.50000 35.7% 247 15s 603 169 6.00000 16 106 7.00000 6.00000 14.3% 203 21s 610 174 6.00000 16 75 7.00000 6.00000 14.3% 201 25s 618 182 6.00000 24 57 7.00000 6.00000 14.3% 274 30s 628 179 6.00000 29 139 7.00000 6.00000 14.3% 276 36s 640 175 6.00000 31 149 7.00000 6.00000 14.3% 279 40s Explored 652 nodes (193656 simplex iterations) in 40.96 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%