Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:13:10 2012 Optimize a model with 12060 rows, 18090 columns and 53734 nonzeros Presolve removed 33 rows and 4422 columns Presolve time: 0.21s Presolved: 12027 rows, 13668 columns, 49312 nonzeros Variable types: 0 continuous, 13668 integer (13668 binary) Found heuristic solution: objective 41.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 12095 iterations, 0.80 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 98 3.00000 2.00000 33.3% - 2s 0 0 2.00000 0 312 3.00000 2.00000 33.3% - 6s 0 0 2.00000 0 306 3.00000 2.00000 33.3% - 14s 0 0 2.00000 0 261 3.00000 2.00000 33.3% - 24s 0 0 2.00000 0 98 3.00000 2.00000 33.3% - 32s 0 0 2.00000 0 199 3.00000 2.00000 33.3% - 35s 0 0 2.00000 0 203 3.00000 2.00000 33.3% - 41s 0 0 2.00000 0 254 3.00000 2.00000 33.3% - 50s 0 0 2.00000 0 98 3.00000 2.00000 33.3% - 60s 0 0 2.00000 0 205 3.00000 2.00000 33.3% - 66s 0 0 2.00000 0 203 3.00000 2.00000 33.3% - 69s 0 2 2.00000 0 203 3.00000 2.00000 33.3% - 72s 4 4 2.00000 1 98 3.00000 2.00000 33.3% 2770 76s 5 5 2.00000 1 98 3.00000 2.00000 33.3% 2216 83s 6 6 2.00000 1 98 3.00000 2.00000 33.3% 1846 95s 7 6 2.00000 1 98 3.00000 2.00000 33.3% 1583 105s 8 7 2.00000 1 98 3.00000 2.00000 33.3% 1385 117s 11 9 infeasible 12 3.00000 2.00000 33.3% 20246 122s Cutting planes: Gomory: 10 Zero half: 3 Explored 13 nodes (509275 simplex iterations) in 123.84 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%