Gurobi 5.0.1 (linux64) logging started Sun Nov 18 04:16:47 2012 Optimize a model with 351 rows, 262 columns and 1137 nonzeros Presolve time: 0.00s Presolved: 351 rows, 262 columns, 1137 nonzeros Variable types: 0 continuous, 262 integer (262 binary) Found heuristic solution: objective 77.0000000 Root relaxation: objective 0.000000e+00, 120 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 86 77.00000 0.00000 100% - 0s H 0 0 63.0000000 0.00000 100% - 0s H 0 0 60.0000000 0.00000 100% - 0s 0 0 0.40584 0 88 60.00000 0.40584 99.3% - 0s H 0 0 57.0000000 0.40584 99.3% - 0s 0 0 0.95688 0 90 57.00000 0.95688 98.3% - 0s H 0 0 55.0000000 0.95688 98.3% - 0s 0 0 0.96935 0 90 55.00000 0.96935 98.2% - 0s H 0 0 53.0000000 0.96935 98.2% - 0s 0 0 1.03141 0 92 53.00000 1.03141 98.1% - 0s H 0 0 52.0000000 1.03141 98.0% - 0s 0 0 1.03141 0 92 52.00000 1.03141 98.0% - 0s 0 2 1.03350 0 92 52.00000 1.03350 98.0% - 0s * 48 40 31 41.0000000 4.50000 89.0% 23.0 0s * 84 57 25 37.0000000 4.66667 87.4% 22.8 0s * 116 70 22 32.0000000 7.00000 78.1% 22.6 0s * 835 301 31 31.0000000 14.29688 53.9% 23.9 1s * 1213 269 27 30.0000000 17.25862 42.5% 22.9 1s Explored 3936 nodes (83042 simplex iterations) in 3.61 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+01, best bound 3.000000000000e+01, gap 0.0%