Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:46:35 2012 Optimize a model with 6510 rows, 930 columns and 20340 nonzeros Presolve time: 0.05s Presolved: 6510 rows, 930 columns, 27153 nonzeros Variable types: 0 continuous, 930 integer (930 binary) Found heuristic solution: objective 18.0000000 Root relaxation: objective 2.000000e+00, 126 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 60 18.00000 2.00000 88.9% - 0s H 0 0 11.0000000 2.00000 81.8% - 0s H 0 0 9.0000000 2.00000 77.8% - 0s 0 0 2.00000 0 60 9.00000 2.00000 77.8% - 0s 0 0 2.00000 0 60 9.00000 2.00000 77.8% - 0s 0 0 2.00000 0 60 9.00000 2.00000 77.8% - 1s H 0 0 8.0000000 2.00000 75.0% - 1s 0 0 2.00000 0 60 8.00000 2.00000 75.0% - 1s 0 0 2.00000 0 60 8.00000 2.00000 75.0% - 1s 0 0 2.00000 0 60 8.00000 2.00000 75.0% - 2s 0 2 2.00000 0 60 8.00000 2.00000 75.0% - 3s 6 8 4.33333 4 79 8.00000 3.00000 62.5% 1787 5s * 23 17 14 7.0000000 3.00000 57.1% 693 5s 92 49 6.00000 13 75 7.00000 4.00000 42.9% 525 10s 294 77 6.00000 9 69 7.00000 4.11111 41.3% 300 15s Explored 602 nodes (139472 simplex iterations) in 20.43 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%