Gurobi 5.0.1 (linux64) logging started Fri Nov 16 19:59:54 2012 Optimize a model with 14388 rows, 17556 columns and 60192 nonzeros Presolve removed 21 rows and 2772 columns Presolve time: 0.27s Presolved: 14367 rows, 14784 columns, 57420 nonzeros Variable types: 0 continuous, 14784 integer (14784 binary) Found heuristic solution: objective 46.0000000 Root relaxation: objective 2.000000e+00, 20453 iterations, 3.91 seconds Total elapsed time = 7.67s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 182 46.00000 2.00000 95.7% - 9s H 0 0 4.0000000 2.00000 50.0% - 9s H 0 0 3.0000000 2.00000 33.3% - 9s 0 0 2.00000 0 299 3.00000 2.00000 33.3% - 14s 0 0 2.00000 0 317 3.00000 2.00000 33.3% - 25s 0 0 2.00000 0 295 3.00000 2.00000 33.3% - 37s 0 0 2.00000 0 410 3.00000 2.00000 33.3% - 52s 0 0 2.00000 0 182 3.00000 2.00000 33.3% - 60s 0 0 2.00000 0 316 3.00000 2.00000 33.3% - 76s 0 0 2.00000 0 316 3.00000 2.00000 33.3% - 94s 0 0 2.00000 0 316 3.00000 2.00000 33.3% - 102s 0 2 2.00000 0 316 3.00000 2.00000 33.3% - 119s 2 3 2.00000 1 316 3.00000 2.00000 33.3% 10749 122s 4 4 2.00000 1 182 3.00000 2.00000 33.3% 5374 129s 5 5 2.00000 1 182 3.00000 2.00000 33.3% 4300 145s 6 6 2.00000 1 182 3.00000 2.00000 33.3% 3583 158s 7 6 2.00000 1 182 3.00000 2.00000 33.3% 3071 172s Cutting planes: Gomory: 96 Zero half: 7 Explored 7 nodes (416018 simplex iterations) in 172.47 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%