Gurobi 5.0.1 (linux64) logging started Fri Nov 16 02:25:03 2012 Optimize a model with 7743 rows, 1056 columns and 24126 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.10s Presolved: 7741 rows, 1054 columns, 27346 nonzeros Variable types: 0 continuous, 1054 integer (1054 binary) Found heuristic solution: objective 32.0000000 Root relaxation: objective 3.546392e+00, 8151 iterations, 0.59 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.54639 0 863 32.00000 3.54639 88.9% - 1s 0 0 6.00000 0 111 32.00000 6.00000 81.2% - 2s H 0 0 21.0000000 6.00000 71.4% - 2s H 0 0 15.0000000 6.00000 60.0% - 2s H 0 0 14.0000000 6.00000 57.1% - 2s 0 0 6.28571 0 106 14.00000 6.28571 55.1% - 2s 0 0 7.00000 0 55 14.00000 7.00000 50.0% - 3s H 0 0 11.0000000 7.00000 36.4% - 3s H 0 0 9.0000000 7.00000 22.2% - 3s 0 0 7.00000 0 74 9.00000 7.00000 22.2% - 3s H 0 0 8.0000000 7.00000 12.5% - 3s 0 0 7.00000 0 47 8.00000 7.00000 12.5% - 3s 0 0 7.00000 0 16 8.00000 7.00000 12.5% - 3s 0 0 7.00000 0 16 8.00000 7.00000 12.5% - 3s 0 0 7.00000 0 26 8.00000 7.00000 12.5% - 3s 0 0 7.00000 0 14 8.00000 7.00000 12.5% - 3s 0 0 7.00000 0 39 8.00000 7.00000 12.5% - 4s 0 0 7.00000 0 16 8.00000 7.00000 12.5% - 4s 0 0 7.00000 0 46 8.00000 7.00000 12.5% - 4s 0 0 7.00000 0 46 8.00000 7.00000 12.5% - 4s 0 2 7.00000 0 46 8.00000 7.00000 12.5% - 4s 4 4 7.00000 0 18 8.00000 7.00000 12.5% 103 5s H 5 4 7.0000000 7.00000 0.0% 82.6 5s Cutting planes: Clique: 1 Zero half: 3 Explored 5 nodes (38922 simplex iterations) in 5.54 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%