Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:11:15 2012 Optimize a model with 451 rows, 433 columns and 1558 nonzeros Presolve removed 0 rows and 21 columns Presolve time: 0.00s Presolved: 451 rows, 412 columns, 1537 nonzeros Variable types: 0 continuous, 412 integer (411 binary) Found heuristic solution: objective 74.0000000 Root relaxation: objective 0.000000e+00, 250 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 74.00000 0.00000 100% - 0s H 0 0 71.0000000 0.00000 100% - 0s H 0 0 66.0000000 0.00000 100% - 0s H 0 0 61.0000000 0.00000 100% - 0s 0 0 0.33222 0 173 61.00000 0.33222 99.5% - 0s H 0 0 42.0000000 0.33222 99.2% - 0s H 0 0 39.0000000 0.33222 99.1% - 0s 0 0 0.96642 0 176 39.00000 0.96642 97.5% - 0s H 0 0 38.0000000 0.96642 97.5% - 0s H 0 0 34.0000000 0.96642 97.2% - 0s 0 0 0.96663 0 179 34.00000 0.96663 97.2% - 0s 0 0 0.96663 0 175 34.00000 0.96663 97.2% - 0s H 0 0 33.0000000 0.96663 97.1% - 0s 0 2 0.97132 0 175 33.00000 0.97132 97.1% - 0s H 27 27 25.0000000 2.07075 91.7% 27.8 0s H 54 54 21.0000000 2.07075 90.1% 18.3 0s * 75 54 46 17.0000000 2.07075 87.8% 15.1 0s H 108 40 14.0000000 2.09387 85.0% 16.3 0s Cutting planes: Gomory: 3 Zero half: 1 Explored 412 nodes (11171 simplex iterations) in 0.47 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.400000000000e+01, best bound 1.400000000000e+01, gap 0.0%