Gurobi 5.0.1 (linux64) logging started Fri Nov 16 19:01:17 2012 Optimize a model with 11938 rows, 16256 columns and 51562 nonzeros Presolve removed 25 rows and 3175 columns Presolve time: 0.23s Presolved: 11913 rows, 13081 columns, 48387 nonzeros Variable types: 0 continuous, 13081 integer (13081 binary) Found heuristic solution: objective 44.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 11149 iterations, 0.70 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 126 3.00000 2.00000 33.3% - 3s 0 0 2.00000 0 434 3.00000 2.00000 33.3% - 6s 0 0 2.00000 0 248 3.00000 2.00000 33.3% - 14s 0 0 2.00000 0 340 3.00000 2.00000 33.3% - 22s 0 0 2.00000 0 270 3.00000 2.00000 33.3% - 29s 0 0 2.00000 0 126 3.00000 2.00000 33.3% - 34s 0 0 2.00000 0 223 3.00000 2.00000 33.3% - 41s 0 0 2.00000 0 270 3.00000 2.00000 33.3% - 52s 0 0 2.00000 0 126 3.00000 2.00000 33.3% - 55s 0 0 2.00000 0 225 3.00000 2.00000 33.3% - 62s 0 0 2.00000 0 225 3.00000 2.00000 33.3% - 67s 0 2 2.00000 0 225 3.00000 2.00000 33.3% - 81s 4 4 2.00000 1 126 3.00000 2.00000 33.3% 5074 86s 5 5 2.00000 1 334 3.00000 2.00000 33.3% 4060 96s 6 6 2.00000 1 126 3.00000 2.00000 33.3% 3383 104s 7 6 2.00000 1 245 3.00000 2.00000 33.3% 2900 111s Cutting planes: Gomory: 4 Zero half: 32 Explored 7 nodes (378537 simplex iterations) in 112.33 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%