Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:54:01 2012 Optimize a model with 7037 rows, 992 columns and 21979 nonzeros Presolve time: 0.06s Presolved: 7037 rows, 992 columns, 27672 nonzeros Variable types: 0 continuous, 992 integer (992 binary) Found heuristic solution: objective 19.0000000 Root relaxation: objective 2.000000e+00, 217 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 62 19.00000 2.00000 89.5% - 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 62 9.00000 2.00000 77.8% - 0s 0 0 2.00000 0 62 9.00000 2.00000 77.8% - 0s 0 0 2.00000 0 62 9.00000 2.00000 77.8% - 1s 0 0 2.00000 0 62 9.00000 2.00000 77.8% - 2s H 0 0 8.0000000 2.00000 75.0% - 2s 0 0 2.00000 0 62 8.00000 2.00000 75.0% - 2s 0 0 2.00000 0 62 8.00000 2.00000 75.0% - 3s H 0 0 7.0000000 2.00000 71.4% - 4s 0 2 2.00000 0 62 7.00000 2.00000 71.4% - 4s 1 3 3.00000 1 60 7.00000 2.00000 71.4% 7299 5s 16 18 5.37500 11 108 7.00000 3.00000 57.1% 1850 10s 135 70 6.00000 4 93 7.00000 4.50000 35.7% 484 15s 240 83 cutoff 15 7.00000 5.00000 28.6% 419 20s 435 138 5.33333 10 94 7.00000 5.00000 28.6% 310 25s 552 155 5.41667 13 79 7.00000 5.00000 28.6% 273 30s 632 166 6.00000 14 48 7.00000 5.00000 28.6% 266 38s 701 180 6.00000 13 62 7.00000 5.00000 28.6% 255 40s 708 186 6.00000 13 62 7.00000 6.00000 14.3% 281 46s 713 191 6.00000 23 128 7.00000 6.00000 14.3% 301 51s 717 194 6.00000 25 104 7.00000 6.00000 14.3% 302 55s 737 183 infeasible 25 7.00000 6.00000 14.3% 309 60s 769 175 infeasible 30 7.00000 6.00000 14.3% 316 65s Explored 837 nodes (279192 simplex iterations) in 69.79 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%