Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:21:24 2012 Optimize a model with 457 rows, 442 columns and 1582 nonzeros Presolve removed 0 rows and 25 columns Presolve time: 0.00s Presolved: 457 rows, 417 columns, 1557 nonzeros Variable types: 0 continuous, 417 integer (416 binary) Found heuristic solution: objective 85.0000000 Root relaxation: objective 0.000000e+00, 242 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 0 182 85.00000 0.00000 100% - 0s H 0 0 58.0000000 0.00000 100% - 0s H 0 0 35.0000000 0.00000 100% - 0s 0 0 0.26620 0 184 35.00000 0.26620 99.2% - 0s H 0 0 31.0000000 0.26620 99.1% - 0s 0 0 0.81794 0 186 31.00000 0.81794 97.4% - 0s H 0 0 27.0000000 0.81794 97.0% - 0s 0 0 0.81812 0 188 27.00000 0.81812 97.0% - 0s 0 0 0.81812 0 187 27.00000 0.81812 97.0% - 0s 0 2 0.82013 0 187 27.00000 0.82013 97.0% - 0s H 27 27 26.0000000 1.00000 96.2% 39.1 0s H 53 53 19.0000000 1.00000 94.7% 25.3 0s H 54 47 18.0000000 1.00000 94.4% 25.9 0s H 81 46 15.0000000 1.00000 93.3% 26.6 0s * 150 61 16 14.0000000 3.55405 74.6% 31.2 0s Cutting planes: Gomory: 4 Zero half: 1 Explored 564 nodes (18665 simplex iterations) in 0.71 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%