Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:30:42 2012 Optimize a model with 5208 rows, 812 columns and 16324 nonzeros Presolve time: 0.05s Presolved: 5208 rows, 812 columns, 23038 nonzeros Variable types: 0 continuous, 812 integer (812 binary) Found heuristic solution: objective 14.0000000 Root relaxation: objective 2.000000e+00, 2247 iterations, 0.12 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 56 14.00000 2.00000 85.7% - 0s H 0 0 10.0000000 2.00000 80.0% - 0s 0 0 2.00000 0 56 10.00000 2.00000 80.0% - 0s H 0 0 9.0000000 2.00000 77.8% - 0s 0 0 2.00000 0 56 9.00000 2.00000 77.8% - 0s 0 0 2.00000 0 56 9.00000 2.00000 77.8% - 0s H 0 0 8.0000000 2.00000 75.0% - 0s 0 0 2.00000 0 56 8.00000 2.00000 75.0% - 0s H 0 0 7.0000000 2.00000 71.4% - 0s 0 0 2.00000 0 56 7.00000 2.00000 71.4% - 0s 0 0 2.00000 0 56 7.00000 2.00000 71.4% - 0s 0 2 2.00000 0 56 7.00000 2.00000 71.4% - 0s 123 62 cutoff 11 7.00000 3.50000 50.0% 269 5s 315 110 5.16667 7 86 7.00000 4.00000 42.9% 242 10s 494 165 6.00000 11 55 7.00000 4.20000 40.0% 212 15s 609 203 6.00000 17 95 7.00000 6.00000 14.3% 209 20s 642 210 6.00000 29 79 7.00000 6.00000 14.3% 228 25s 889 142 infeasible 43 7.00000 6.00000 14.3% 214 30s 1152 47 6.00000 34 103 7.00000 6.00000 14.3% 213 35s 1410 21 6.00000 36 86 7.00000 6.00000 14.3% 213 40s 1891 27 infeasible 38 7.00000 6.00000 14.3% 198 45s 2294 62 infeasible 46 7.00000 6.00000 14.3% 191 50s 2751 47 6.00000 40 57 7.00000 6.00000 14.3% 185 55s 3347 42 infeasible 42 7.00000 6.00000 14.3% 177 60s 3630 46 infeasible 46 7.00000 6.00000 14.3% 178 65s 4062 44 6.00000 41 64 7.00000 6.00000 14.3% 176 70s 4545 46 infeasible 43 7.00000 6.00000 14.3% 172 75s 4971 39 6.00000 38 71 7.00000 6.00000 14.3% 170 80s 5390 34 6.00000 33 91 7.00000 6.00000 14.3% 169 85s 5757 37 6.00000 38 72 7.00000 6.00000 14.3% 169 90s 6047 21 6.00000 35 101 7.00000 6.00000 14.3% 170 95s 6525 24 infeasible 41 7.00000 6.00000 14.3% 168 100s Explored 6847 nodes (1154731 simplex iterations) in 104.90 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%