Gurobi 5.0.1 (linux64) logging started Fri Nov 16 09:12:25 2012 Optimize a model with 15312 rows, 4422 columns and 50094 nonzeros Presolve time: 0.12s Presolved: 15312 rows, 4422 columns, 50290 nonzeros Variable types: 0 continuous, 4422 integer (4422 binary) Found heuristic solution: objective 39.0000000 Root relaxation: objective 2.000000e+00, 5636 iterations, 0.53 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 132 39.00000 2.00000 94.9% - 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 0 132 5.00000 2.00000 60.0% - 4s 0 0 2.00000 0 132 5.00000 2.00000 60.0% - 11s 0 0 2.00000 0 132 5.00000 2.00000 60.0% - 17s 0 0 2.00000 0 132 5.00000 2.00000 60.0% - 26s 0 0 2.00000 0 132 5.00000 2.00000 60.0% - 32s 0 0 2.00000 0 132 5.00000 2.00000 60.0% - 37s 0 2 2.00000 0 132 5.00000 2.00000 60.0% - 57s 1 3 3.00000 1 725 5.00000 2.00000 60.0% 37194 65s 3 5 3.00000 2 784 5.00000 3.00000 40.0% 16943 70s 6 6 3.00000 3 136 5.00000 3.00000 40.0% 11059 75s 9 7 3.20000 4 579 5.00000 3.00000 40.0% 10691 84s 16 14 4.00000 10 92 5.00000 3.00000 40.0% 6166 85s * 28 6 19 4.0000000 3.00000 25.0% 3565 85s 39 5 3.00000 2 565 4.00000 3.00000 25.0% 3127 91s 45 3 cutoff 5 4.00000 3.00000 25.0% 3094 95s 53 1 cutoff 3 4.00000 3.00000 25.0% 3214 101s 58 2 3.00000 4 130 4.00000 3.00000 25.0% 3247 105s Cutting planes: Clique: 181 Explored 61 nodes (301112 simplex iterations) in 105.06 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%