Gurobi 5.0.1 (linux64) logging started Fri Nov 16 08:52:58 2012 Optimize a model with 14365 rows, 4290 columns and 47125 nonzeros Presolve time: 0.11s Presolved: 14365 rows, 4290 columns, 47364 nonzeros Variable types: 0 continuous, 4290 integer (4290 binary) Found heuristic solution: objective 38.0000000 Root relaxation: objective 2.000000e+00, 4653 iterations, 0.27 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 130 38.00000 2.00000 94.7% - 2s H 0 0 16.0000000 2.00000 87.5% - 2s H 0 0 5.0000000 2.00000 60.0% - 2s 0 0 2.00000 0 130 5.00000 2.00000 60.0% - 3s 0 0 2.00000 0 130 5.00000 2.00000 60.0% - 9s 0 0 2.00000 0 130 5.00000 2.00000 60.0% - 16s 0 0 2.00000 0 130 5.00000 2.00000 60.0% - 24s 0 0 2.00000 0 130 5.00000 2.00000 60.0% - 35s 0 0 2.00000 0 130 5.00000 2.00000 60.0% - 40s 0 2 2.00000 0 130 5.00000 2.00000 60.0% - 57s 1 3 3.00000 1 781 5.00000 2.00000 60.0% 31862 67s 2 4 3.00000 1 655 5.00000 3.00000 40.0% 19631 70s 11 7 3.14286 5 300 5.00000 3.00000 40.0% 4926 75s H 27 6 4.0000000 3.00000 25.0% 2166 77s 32 5 3.00000 3 481 4.00000 3.00000 25.0% 2120 81s 37 4 3.00000 2 611 4.00000 3.00000 25.0% 2189 85s 43 2 cutoff 5 4.00000 3.00000 25.0% 2192 90s 48 1 cutoff 4 4.00000 3.00000 25.0% 2286 95s Cutting planes: Clique: 232 Explored 54 nodes (204234 simplex iterations) in 98.49 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%