Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:57:29 2012 Optimize a model with 7161 rows, 992 columns and 22351 nonzeros Presolve time: 0.06s Presolved: 7161 rows, 992 columns, 28489 nonzeros Variable types: 0 continuous, 992 integer (992 binary) Found heuristic solution: objective 17.0000000 Root relaxation: objective 2.000000e+00, 557 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 62 17.00000 2.00000 88.2% - 0s H 0 0 12.0000000 2.00000 83.3% - 0s H 0 0 10.0000000 2.00000 80.0% - 0s 0 0 2.00000 0 62 10.00000 2.00000 80.0% - 0s H 0 0 9.0000000 2.00000 77.8% - 0s 0 0 2.00000 0 62 9.00000 2.00000 77.8% - 0s H 0 0 8.0000000 2.00000 75.0% - 0s 0 0 2.00000 0 62 8.00000 2.00000 75.0% - 1s 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 0 2.00000 0 62 8.00000 2.00000 75.0% - 2s H 0 0 7.0000000 2.00000 71.4% - 2s 0 2 2.00000 0 62 7.00000 2.00000 71.4% - 4s 5 7 4.00000 3 56 7.00000 3.00000 57.1% 1301 5s 85 31 5.00000 7 56 7.00000 3.50000 50.0% 498 10s 234 70 cutoff 10 7.00000 4.50000 35.7% 335 15s 337 93 6.00000 6 56 7.00000 5.00000 28.6% 325 20s 492 124 6.00000 9 56 7.00000 5.00000 28.6% 274 25s 543 131 6.00000 11 110 7.00000 5.25000 25.0% 293 30s 608 135 6.00000 8 46 7.00000 6.00000 14.3% 274 35s Explored 614 nodes (211062 simplex iterations) in 39.51 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%