Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:46:56 2012 Optimize a model with 6210 rows, 930 columns and 19440 nonzeros Presolve time: 0.06s Presolved: 6210 rows, 930 columns, 26809 nonzeros Variable types: 0 continuous, 930 integer (930 binary) Found heuristic solution: objective 17.0000000 Root relaxation: objective 2.000000e+00, 2442 iterations, 0.13 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 60 17.00000 2.00000 88.2% - 0s H 0 0 14.0000000 2.00000 85.7% - 0s H 0 0 9.0000000 2.00000 77.8% - 0s 0 0 2.00000 0 60 9.00000 2.00000 77.8% - 0s H 0 0 8.0000000 2.00000 75.0% - 0s 0 0 2.00000 0 60 8.00000 2.00000 75.0% - 0s 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% - 1s 0 0 2.00000 0 60 8.00000 2.00000 75.0% - 1s 0 2 2.00000 0 60 8.00000 2.00000 75.0% - 2s * 34 19 22 7.0000000 3.00000 57.1% 479 4s 38 17 4.00000 2 103 7.00000 3.00000 57.1% 448 5s 225 48 5.00000 9 58 7.00000 4.50000 35.7% 272 10s 578 83 cutoff 15 7.00000 5.00000 28.6% 184 15s Explored 608 nodes (133759 simplex iterations) in 20.06 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%