Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:58:12 2012 Optimize a model with 3577 rows, 120 columns and 7154 nonzeros Presolve removed 2565 rows and 0 columns Presolve time: 0.11s Presolved: 1012 rows, 120 columns, 7042 nonzeros Variable types: 0 continuous, 120 integer (120 binary) Found heuristic solution: objective 6.0000000 Root relaxation: objective 1.642731e+01, 454 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 16.42731 0 114 6.00000 16.42731 174% - 0s H 0 0 7.0000000 16.42731 135% - 0s H 0 0 8.0000000 16.42731 105% - 0s 0 0 15.86273 0 117 8.00000 15.86273 98.3% - 0s H 0 0 10.0000000 15.86273 58.6% - 0s 0 0 15.74652 0 120 10.00000 15.74652 57.5% - 0s 0 0 15.73374 0 120 10.00000 15.73374 57.3% - 0s 0 0 15.72717 0 120 10.00000 15.72717 57.3% - 0s 0 0 15.69085 0 119 10.00000 15.69085 56.9% - 1s 0 0 15.68729 0 119 10.00000 15.68729 56.9% - 1s 0 0 15.68353 0 120 10.00000 15.68353 56.8% - 1s 0 2 15.68254 0 120 10.00000 15.68254 56.8% - 1s Cutting planes: Clique: 111 Explored 230 nodes (18584 simplex iterations) in 3.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.000000000000e+01, best bound 1.000000000000e+01, gap 0.0%