Gurobi 5.0.1 (linux64) logging started Fri Nov 16 18:42:38 2012 Optimize a model with 10292 rows, 15500 columns and 45880 nonzeros Presolve removed 33 rows and 4092 columns Presolve time: 0.18s Presolved: 10259 rows, 11408 columns, 41788 nonzeros Variable types: 0 continuous, 11408 integer (11408 binary) Found heuristic solution: objective 39.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 7627 iterations, 0.18 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 14 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 141 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 14 3.00000 2.00000 33.3% - 1s 0 0 2.00000 0 105 3.00000 2.00000 33.3% - 2s 0 0 2.00000 0 192 3.00000 2.00000 33.3% - 6s 0 0 2.00000 0 14 3.00000 2.00000 33.3% - 14s 0 0 2.00000 0 109 3.00000 2.00000 33.3% - 19s 0 0 2.00000 0 192 3.00000 2.00000 33.3% - 25s 0 0 2.00000 0 14 3.00000 2.00000 33.3% - 34s 0 0 2.00000 0 103 3.00000 2.00000 33.3% - 39s 0 0 2.00000 0 103 3.00000 2.00000 33.3% - 39s 0 1 2.00000 0 103 3.00000 2.00000 33.3% - 42s 6 5 2.00000 1 117 3.00000 2.00000 33.3% 1631 53s 7 5 2.00000 1 111 3.00000 2.00000 33.3% 1398 61s Cutting planes: Zero half: 8 Explored 8 nodes (292369 simplex iterations) in 61.23 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%