Gurobi 5.0.1 (linux64) logging started Sun Nov 18 00:15:28 2012 Optimize a model with 283 rows, 192 columns and 897 nonzeros Presolve time: 0.00s Presolved: 283 rows, 192 columns, 897 nonzeros Variable types: 0 continuous, 192 integer (192 binary) Found heuristic solution: objective 65.0000000 Root relaxation: objective 0.000000e+00, 76 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 51 65.00000 0.00000 100% - 0s H 0 0 55.0000000 0.00000 100% - 0s 0 0 0.58738 0 53 55.00000 0.58738 98.9% - 0s H 0 0 54.0000000 0.58738 98.9% - 0s 0 0 0.62063 0 53 54.00000 0.62063 98.9% - 0s 0 0 0.75362 0 53 54.00000 0.75362 98.6% - 0s H 0 0 51.0000000 0.75362 98.5% - 0s 0 0 0.78687 0 53 51.00000 0.78687 98.5% - 0s 0 0 0.79795 0 53 51.00000 0.79795 98.4% - 0s 0 0 0.79795 0 53 51.00000 0.79795 98.4% - 0s 0 2 0.84415 0 53 51.00000 0.84415 98.3% - 0s * 40 39 24 40.0000000 5.08696 87.3% 24.0 0s * 72 56 22 38.0000000 5.40373 85.8% 21.9 0s * 112 70 20 37.0000000 8.69565 76.5% 21.2 0s * 150 84 18 36.0000000 8.83478 75.5% 20.5 0s * 406 153 17 35.0000000 14.95652 57.3% 21.1 0s * 416 149 13 34.0000000 15.22222 55.2% 21.0 0s * 928 203 22 33.0000000 18.00000 45.5% 23.1 0s Explored 2937 nodes (64652 simplex iterations) in 2.11 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.300000000000e+01, best bound 3.300000000000e+01, gap 0.0%