Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:48:18 2012 Optimize a model with 2464 rows, 100 columns and 4928 nonzeros Presolve removed 1761 rows and 0 columns Presolve time: 0.07s Presolved: 703 rows, 100 columns, 4639 nonzeros Variable types: 0 continuous, 100 integer (100 binary) Found heuristic solution: objective 8.0000000 Root relaxation: objective 1.461060e+01, 372 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 14.61060 0 94 8.00000 14.61060 82.6% - 0s 0 0 14.06544 0 100 8.00000 14.06544 75.8% - 0s 0 0 14.01114 0 100 8.00000 14.01114 75.1% - 0s 0 0 13.97273 0 100 8.00000 13.97273 74.7% - 0s 0 0 13.96067 0 100 8.00000 13.96067 74.5% - 0s 0 0 13.94307 0 100 8.00000 13.94307 74.3% - 0s 0 0 13.94133 0 100 8.00000 13.94133 74.3% - 0s 0 0 13.93974 0 100 8.00000 13.93974 74.2% - 0s 0 0 13.93968 0 100 8.00000 13.93968 74.2% - 0s 0 2 13.92954 0 100 8.00000 13.92954 74.1% - 1s * 61 36 6 9.0000000 13.64913 51.7% 63.0 1s Cutting planes: Clique: 88 Explored 200 nodes (12368 simplex iterations) in 1.70 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%