Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:22:04 2012 Optimize a model with 5049 rows, 756 columns and 15795 nonzeros Presolve time: 0.05s Presolved: 5049 rows, 756 columns, 24486 nonzeros Variable types: 0 continuous, 756 integer (756 binary) Found heuristic solution: objective 13.0000000 Root relaxation: objective 2.000000e+00, 977 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 54 13.00000 2.00000 84.6% - 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% - 1s 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 106 44 5.50000 5 75 7.00000 4.00000 42.9% 249 5s 332 98 5.66667 7 69 7.00000 4.83333 31.0% 205 10s 602 128 infeasible 13 7.00000 5.00000 28.6% 186 15s 711 161 6.00000 13 67 7.00000 6.00000 14.3% 169 20s 721 171 6.00000 29 143 7.00000 6.00000 14.3% 231 25s 745 171 6.00000 40 91 7.00000 6.00000 14.3% 235 30s 865 125 infeasible 38 7.00000 6.00000 14.3% 233 35s 1151 30 infeasible 38 7.00000 6.00000 14.3% 218 40s Explored 1354 nodes (292246 simplex iterations) in 43.23 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%