Gurobi 5.0.1 (linux64) logging started Fri Nov 16 19:46:57 2012 Optimize a model with 11790 rows, 17292 columns and 52138 nonzeros Presolve removed 29 rows and 3799 columns Presolve time: 0.21s Presolved: 11761 rows, 13493 columns, 48339 nonzeros Variable types: 0 continuous, 13493 integer (13493 binary) Found heuristic solution: objective 45.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 11738 iterations, 0.65 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 102 3.00000 2.00000 33.3% - 2s 0 0 2.00000 0 226 3.00000 2.00000 33.3% - 4s 0 0 2.00000 0 314 3.00000 2.00000 33.3% - 13s 0 0 2.00000 0 262 3.00000 2.00000 33.3% - 21s 0 0 2.00000 0 102 3.00000 2.00000 33.3% - 29s 0 0 2.00000 0 199 3.00000 2.00000 33.3% - 33s 0 0 2.00000 0 258 3.00000 2.00000 33.3% - 41s 0 0 2.00000 0 102 3.00000 2.00000 33.3% - 52s 0 0 2.00000 0 209 3.00000 2.00000 33.3% - 58s 0 0 2.00000 0 209 3.00000 2.00000 33.3% - 64s 0 2 2.00000 0 209 3.00000 2.00000 33.3% - 75s 5 5 2.00000 1 102 3.00000 2.00000 33.3% 3901 85s 6 6 2.00000 1 102 3.00000 2.00000 33.3% 3250 92s 7 6 2.00000 1 102 3.00000 2.00000 33.3% 2786 104s 8 7 2.00000 1 102 3.00000 2.00000 33.3% 2438 106s 10 8 infeasible 10 3.00000 2.00000 33.3% 16536 110s Cutting planes: Gomory: 6 Zero half: 2 Explored 12 nodes (415823 simplex iterations) in 111.39 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%