Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:20:17 2012 Optimize a model with 4914 rows, 756 columns and 15390 nonzeros Presolve time: 0.05s Presolved: 4914 rows, 756 columns, 23794 nonzeros Variable types: 0 continuous, 756 integer (756 binary) Found heuristic solution: objective 12.0000000 Root relaxation: objective 2.000000e+00, 483 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 54 12.00000 2.00000 83.3% - 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 54 9.00000 2.00000 77.8% - 0s H 0 0 8.0000000 2.00000 75.0% - 0s 0 0 2.00000 0 54 8.00000 2.00000 75.0% - 0s 0 0 2.00000 0 54 8.00000 2.00000 75.0% - 0s H 0 0 7.0000000 2.00000 71.4% - 0s 0 0 2.00000 0 54 7.00000 2.00000 71.4% - 0s 0 0 2.00000 0 54 7.00000 2.00000 71.4% - 1s 0 2 2.00000 0 54 7.00000 2.00000 71.4% - 1s 94 56 6.00000 7 56 7.00000 4.00000 42.9% 312 5s 349 103 infeasible 5 7.00000 5.00000 28.6% 210 10s 553 129 6.00000 15 35 7.00000 5.00000 28.6% 191 15s 712 137 cutoff 13 7.00000 5.09091 27.3% 201 20s 805 154 6.00000 10 34 7.00000 6.00000 14.3% 190 25s 818 165 6.00000 30 50 7.00000 6.00000 14.3% 213 30s 850 167 6.00000 38 39 7.00000 6.00000 14.3% 219 35s 952 161 6.00000 31 42 7.00000 6.00000 14.3% 225 40s 1080 134 6.00000 33 58 7.00000 6.00000 14.3% 241 45s 1249 84 infeasible 41 7.00000 6.00000 14.3% 252 50s 1408 62 6.00000 37 39 7.00000 6.00000 14.3% 257 55s 1567 48 infeasible 36 7.00000 6.00000 14.3% 265 60s 1693 40 infeasible 34 7.00000 6.00000 14.3% 276 65s 1827 38 infeasible 36 7.00000 6.00000 14.3% 288 70s 2005 16 6.00000 36 46 7.00000 6.00000 14.3% 288 75s Explored 2204 nodes (638848 simplex iterations) in 79.80 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%