Gurobi 5.0.1 (linux64) logging started Fri Nov 16 09:20:12 2012 Optimize a model with 13794 rows, 4422 columns and 45540 nonzeros Presolve time: 0.11s Presolved: 13794 rows, 4422 columns, 45706 nonzeros Variable types: 0 continuous, 4422 integer (4422 binary) Found heuristic solution: objective 42.0000000 Root relaxation: objective 2.000000e+00, 5718 iterations, 0.51 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 132 42.00000 2.00000 95.2% - 2s H 0 0 17.0000000 2.00000 88.2% - 2s H 0 0 5.0000000 2.00000 60.0% - 2s 0 0 2.00000 0 132 5.00000 2.00000 60.0% - 3s 0 0 2.00000 0 132 5.00000 2.00000 60.0% - 10s 0 0 2.00000 0 132 5.00000 2.00000 60.0% - 17s H 0 0 4.0000000 2.00000 50.0% - 18s 0 0 2.00000 0 132 4.00000 2.00000 50.0% - 24s 0 0 2.00000 0 132 4.00000 2.00000 50.0% - 30s 0 0 2.00000 0 132 4.00000 2.00000 50.0% - 35s 0 2 2.00000 0 132 4.00000 2.00000 50.0% - 49s 1 3 3.00000 1 759 4.00000 2.00000 50.0% 29556 59s 2 4 3.00000 1 525 4.00000 3.00000 25.0% 23950 67s 6 6 3.00000 3 626 4.00000 3.00000 25.0% 8793 70s 12 6 cutoff 5 4.00000 3.00000 25.0% 6086 76s 14 6 cutoff 7 4.00000 3.00000 25.0% 6131 81s 16 6 3.00000 2 600 4.00000 3.00000 25.0% 6060 85s 26 6 cutoff 7 4.00000 3.00000 25.0% 4456 90s 39 7 3.00000 5 122 4.00000 3.00000 25.0% 3338 95s 42 6 cutoff 6 4.00000 3.00000 25.0% 3506 101s 44 4 cutoff 6 4.00000 3.00000 25.0% 3729 106s 66 6 cutoff 10 4.00000 3.00000 25.0% 2753 110s 77 5 cutoff 9 4.00000 3.00000 25.0% 2669 115s 88 8 cutoff 11 4.00000 3.00000 25.0% 2599 120s 103 3 cutoff 9 4.00000 3.00000 25.0% 2528 125s 117 5 cutoff 9 4.00000 3.00000 25.0% 2435 130s 127 5 3.00000 7 120 4.00000 3.00000 25.0% 2414 135s 132 2 cutoff 8 4.00000 3.00000 25.0% 2463 140s 138 2 cutoff 9 4.00000 3.00000 25.0% 2494 145s 146 2 cutoff 8 4.00000 3.00000 25.0% 2469 150s Cutting planes: Gomory: 1 Clique: 160 Zero half: 13 Explored 151 nodes (457522 simplex iterations) in 153.82 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%