Gurobi 5.0.1 (linux64) logging started Fri Nov 16 06:53:46 2012 Optimize a model with 10020 rows, 3660 columns and 33480 nonzeros Presolve time: 0.09s Presolved: 10020 rows, 3660 columns, 33810 nonzeros Variable types: 0 continuous, 3660 integer (3660 binary) Found heuristic solution: objective 37.0000000 Root relaxation: objective 2.000000e+00, 6588 iterations, 0.94 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 120 37.00000 2.00000 94.6% - 1s H 0 0 12.0000000 2.00000 83.3% - 1s H 0 0 5.0000000 2.00000 60.0% - 1s 0 0 2.00000 0 120 5.00000 2.00000 60.0% - 1s 0 0 2.00000 0 120 5.00000 2.00000 60.0% - 2s H 0 0 4.0000000 2.00000 50.0% - 2s 0 0 2.00000 0 120 4.00000 2.00000 50.0% - 2s 0 0 2.00000 0 120 4.00000 2.00000 50.0% - 2s 0 0 2.00000 0 120 4.00000 2.00000 50.0% - 3s 0 0 2.00000 0 120 4.00000 2.00000 50.0% - 3s 0 2 2.00000 0 120 4.00000 2.00000 50.0% - 6s 1 3 2.60000 1 753 4.00000 2.00000 50.0% 20812 13s 2 4 2.50000 1 799 4.00000 2.50000 37.5% 14522 16s 31 13 3.00000 2 244 4.00000 2.50000 37.5% 1565 20s Cutting planes: Clique: 12 Explored 159 nodes (87895 simplex iterations) in 24.52 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%