Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:48:08 2012 Optimize a model with 6510 rows, 930 columns and 20340 nonzeros Presolve time: 0.06s Presolved: 6510 rows, 930 columns, 26376 nonzeros Variable types: 0 continuous, 930 integer (930 binary) Found heuristic solution: objective 17.0000000 Root relaxation: objective 2.000000e+00, 841 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 60 17.00000 2.00000 88.2% - 0s H 0 0 10.0000000 2.00000 80.0% - 0s H 0 0 9.0000000 2.00000 77.8% - 0s 0 0 2.00000 0 60 9.00000 2.00000 77.8% - 0s H 0 0 8.0000000 2.00000 75.0% - 0s 0 0 2.00000 0 60 8.00000 2.00000 75.0% - 0s 0 0 2.00000 0 60 8.00000 2.00000 75.0% - 1s 0 0 2.00000 0 60 8.00000 2.00000 75.0% - 1s 0 0 2.00000 0 60 8.00000 2.00000 75.0% - 2s 0 2 2.00000 0 60 8.00000 2.00000 75.0% - 4s 2 4 3.00000 1 58 8.00000 3.00000 62.5% 3388 5s * 37 20 27 7.0000000 3.00000 57.1% 406 6s 131 58 5.00000 5 133 7.00000 4.00000 42.9% 319 10s 351 112 5.23529 7 117 7.00000 5.00000 28.6% 247 15s 519 153 6.00000 23 46 7.00000 5.00000 28.6% 196 22s 604 173 6.00000 14 85 7.00000 6.00000 14.3% 180 25s 610 178 6.00000 14 116 7.00000 6.00000 14.3% 209 30s 619 184 6.00000 34 90 7.00000 6.00000 14.3% 231 35s 646 181 6.00000 39 82 7.00000 6.00000 14.3% 246 40s 689 168 6.00000 39 92 7.00000 6.00000 14.3% 267 45s 746 150 infeasible 41 7.00000 6.00000 14.3% 280 50s 807 129 infeasible 37 7.00000 6.00000 14.3% 293 55s 876 111 6.00000 38 104 7.00000 6.00000 14.3% 311 60s 960 81 infeasible 43 7.00000 6.00000 14.3% 323 65s 1057 45 6.00000 45 165 7.00000 6.00000 14.3% 333 70s Explored 1120 nodes (386997 simplex iterations) in 73.37 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%