Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:40:16 2012 Optimize a model with 5829 rows, 870 columns and 18241 nonzeros Presolve time: 0.06s Presolved: 5829 rows, 870 columns, 25077 nonzeros Variable types: 0 continuous, 870 integer (870 binary) Found heuristic solution: objective 17.0000000 Root relaxation: objective 2.000000e+00, 2957 iterations, 0.17 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 58 17.00000 2.00000 88.2% - 0s H 0 0 13.0000000 2.00000 84.6% - 0s H 0 0 9.0000000 2.00000 77.8% - 0s 0 0 2.00000 0 58 9.00000 2.00000 77.8% - 0s H 0 0 8.0000000 2.00000 75.0% - 0s 0 0 2.00000 0 58 8.00000 2.00000 75.0% - 0s 0 0 2.00000 0 58 8.00000 2.00000 75.0% - 0s H 0 0 7.0000000 2.00000 71.4% - 0s 0 0 2.00000 0 58 7.00000 2.00000 71.4% - 0s 0 0 2.00000 0 58 7.00000 2.00000 71.4% - 0s 0 0 2.00000 0 58 7.00000 2.00000 71.4% - 0s 0 2 2.00000 0 58 7.00000 2.00000 71.4% - 0s 97 41 6.00000 3 108 7.00000 3.00000 57.1% 356 5s 268 90 5.50000 5 111 7.00000 4.00000 42.9% 265 10s 521 145 6.00000 21 52 7.00000 5.00000 28.6% 203 15s 603 159 6.00000 9 104 7.00000 6.00000 14.3% 195 20s 614 170 6.00000 24 125 7.00000 6.00000 14.3% 235 25s 646 166 infeasible 32 7.00000 6.00000 14.3% 233 30s 742 146 infeasible 33 7.00000 6.00000 14.3% 236 35s 873 95 6.00000 33 38 7.00000 6.00000 14.3% 238 40s Explored 986 nodes (238985 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%