Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:01:58 2012 Optimize a model with 439 rows, 417 columns and 1512 nonzeros Presolve removed 0 rows and 20 columns Presolve time: 0.00s Presolved: 439 rows, 397 columns, 1492 nonzeros Variable types: 0 continuous, 397 integer (396 binary) Found heuristic solution: objective 88.0000000 Root relaxation: objective 0.000000e+00, 258 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 0 170 88.00000 0.00000 100% - 0s H 0 0 66.0000000 0.00000 100% - 0s H 0 0 58.0000000 0.00000 100% - 0s H 0 0 55.0000000 0.00000 100% - 0s 0 0 0.44073 0 171 55.00000 0.44073 99.2% - 0s H 0 0 52.0000000 0.44073 99.2% - 0s 0 0 1.00000 0 175 52.00000 1.00000 98.1% - 0s H 0 0 46.0000000 1.00000 97.8% - 0s 0 0 1.00000 0 172 46.00000 1.00000 97.8% - 0s H 0 0 40.0000000 1.00000 97.5% - 0s 0 0 1.00000 0 176 40.00000 1.00000 97.5% - 0s 0 0 1.00000 0 172 40.00000 1.00000 97.5% - 0s H 0 0 37.0000000 1.00000 97.3% - 0s H 0 0 36.0000000 1.00000 97.2% - 0s 0 2 1.00000 0 170 36.00000 1.00000 97.2% - 0s H 27 27 19.0000000 1.87388 90.1% 61.7 0s H 54 52 17.0000000 1.87388 89.0% 36.8 0s * 61 37 37 16.0000000 1.87388 88.3% 34.1 0s H 166 45 14.0000000 5.43137 61.2% 36.0 0s * 271 14 10 13.0000000 9.86667 24.1% 38.8 0s Cutting planes: Gomory: 3 Explored 288 nodes (12278 simplex iterations) in 0.47 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.300000000000e+01, best bound 1.300000000000e+01, gap 0.0%