Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:52:46 2012 Optimize a model with 7223 rows, 992 columns and 22537 nonzeros Presolve time: 0.06s Presolved: 7223 rows, 992 columns, 28624 nonzeros Variable types: 0 continuous, 992 integer (992 binary) Found heuristic solution: objective 19.0000000 Root relaxation: objective 2.000000e+00, 146 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 62 19.00000 2.00000 89.5% - 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 62 9.00000 2.00000 77.8% - 0s 0 0 2.00000 0 62 9.00000 2.00000 77.8% - 0s 0 0 2.00000 0 62 9.00000 2.00000 77.8% - 1s 0 0 2.00000 0 62 9.00000 2.00000 77.8% - 2s H 0 0 8.0000000 2.00000 75.0% - 2s 0 0 2.00000 0 62 8.00000 2.00000 75.0% - 2s 0 0 2.00000 0 62 8.00000 2.00000 75.0% - 2s 0 2 2.00000 0 62 8.00000 2.00000 75.0% - 4s 2 4 3.00000 1 60 8.00000 3.00000 62.5% 3356 5s 68 34 7.00000 4 116 8.00000 3.60000 55.0% 651 10s * 95 35 22 7.0000000 3.60000 48.6% 543 11s 166 54 cutoff 14 7.00000 4.00000 42.9% 459 15s 339 73 cutoff 12 7.00000 5.00000 28.6% 330 20s 426 82 cutoff 9 7.00000 5.00000 28.6% 343 25s 552 102 5.00000 14 58 7.00000 5.00000 28.6% 329 30s Explored 602 nodes (202479 simplex iterations) in 32.29 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%