Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:23:52 2012 Optimize a model with 5320 rows, 812 columns and 16660 nonzeros Presolve time: 0.05s Presolved: 5320 rows, 812 columns, 23150 nonzeros Variable types: 0 continuous, 812 integer (812 binary) Found heuristic solution: objective 13.0000000 Root relaxation: objective 2.000000e+00, 1701 iterations, 0.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 56 13.00000 2.00000 84.6% - 0s H 0 0 8.0000000 2.00000 75.0% - 0s 0 0 2.00000 0 56 8.00000 2.00000 75.0% - 0s 0 0 2.00000 0 56 8.00000 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% - 1s 0 0 2.00000 0 56 7.00000 2.00000 71.4% - 1s 0 0 2.00000 0 56 7.00000 2.00000 71.4% - 1s 0 2 2.00000 0 56 7.00000 2.00000 71.4% - 2s 65 37 cutoff 7 7.00000 3.60000 48.6% 308 5s 245 86 5.00000 7 56 7.00000 4.33333 38.1% 250 10s 542 183 5.25000 11 83 7.00000 5.00000 28.6% 168 15s 613 209 6.00000 25 103 7.00000 6.00000 14.3% 197 20s 660 204 6.00000 32 76 7.00000 6.00000 14.3% 204 25s 765 170 6.00000 34 85 7.00000 6.00000 14.3% 216 30s 910 119 6.00000 28 83 7.00000 6.00000 14.3% 229 35s 1079 56 infeasible 31 7.00000 6.00000 14.3% 239 40s Explored 1146 nodes (277936 simplex iterations) in 41.48 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%