Gurobi 5.0.1 (linux64) logging started Sun Nov 18 00:29:06 2012 Optimize a model with 313 rows, 208 columns and 988 nonzeros Presolve time: 0.00s Presolved: 313 rows, 208 columns, 988 nonzeros Variable types: 0 continuous, 208 integer (208 binary) Found heuristic solution: objective 66.0000000 Root relaxation: objective 0.000000e+00, 86 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 52 66.00000 0.00000 100% - 0s H 0 0 60.0000000 0.00000 100% - 0s 0 0 0.84000 0 54 60.00000 0.84000 98.6% - 0s H 0 0 58.0000000 0.84000 98.6% - 0s 0 0 0.88928 0 54 58.00000 0.88928 98.5% - 0s H 0 0 57.0000000 0.88928 98.4% - 0s 0 0 0.90000 0 54 57.00000 0.90000 98.4% - 0s 0 0 0.94000 0 54 57.00000 0.94000 98.4% - 0s 0 0 0.94273 0 56 57.00000 0.94273 98.3% - 0s 0 0 0.94273 0 56 57.00000 0.94273 98.3% - 0s 0 2 0.96000 0 56 57.00000 0.96000 98.3% - 0s H 36 36 56.0000000 5.10000 90.9% 28.5 0s * 46 45 29 53.0000000 5.10000 90.4% 24.2 0s * 50 41 28 52.0000000 5.10000 90.2% 22.6 0s * 78 56 18 45.0000000 5.22621 88.4% 23.2 0s * 161 112 22 44.0000000 9.96000 77.4% 23.2 0s * 200 133 19 40.0000000 13.39077 66.5% 23.6 0s * 201 123 17 39.0000000 13.39077 65.7% 23.5 0s * 716 260 29 37.0000000 18.76000 49.3% 23.6 0s Explored 2413 nodes (53442 simplex iterations) in 1.75 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.700000000000e+01, best bound 3.700000000000e+01, gap 0.0%