Gurobi 5.0.1 (linux64) logging started Fri Nov 16 18:23:07 2012 Optimize a model with 9922 rows, 14762 columns and 44044 nonzeros Presolve removed 34 rows and 4114 columns Presolve time: 0.16s Presolved: 9888 rows, 10648 columns, 39930 nonzeros Variable types: 0 continuous, 10648 integer (10648 binary) Found heuristic solution: objective 31.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 8575 iterations, 0.30 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 116 3.00000 2.00000 33.3% - 1s 0 0 2.00000 0 370 3.00000 2.00000 33.3% - 3s 0 0 2.00000 0 116 3.00000 2.00000 33.3% - 8s 0 0 2.00000 0 204 3.00000 2.00000 33.3% - 13s 0 0 2.00000 0 206 3.00000 2.00000 33.3% - 18s 0 0 2.00000 0 206 3.00000 2.00000 33.3% - 24s 0 0 2.00000 0 214 3.00000 2.00000 33.3% - 28s 0 0 2.00000 0 206 3.00000 2.00000 33.3% - 34s 0 2 2.00000 0 206 3.00000 2.00000 33.3% - 40s 5 5 2.00000 1 116 3.00000 2.00000 33.3% 2914 48s 6 6 2.00000 1 116 3.00000 2.00000 33.3% 2429 55s 7 6 2.00000 1 116 3.00000 2.00000 33.3% 2082 61s 8 7 2.00000 1 116 3.00000 2.00000 33.3% 1822 67s 9 8 2.00000 1 116 3.00000 2.00000 33.3% 1619 79s 10 8 2.00000 1 116 3.00000 2.00000 33.3% 1457 80s Cutting planes: Gomory: 7 Zero half: 5 Explored 14 nodes (340670 simplex iterations) in 84.98 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%