Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:37:42 2012 Optimize a model with 6061 rows, 870 columns and 18937 nonzeros Presolve time: 0.06s Presolved: 6061 rows, 870 columns, 25335 nonzeros Variable types: 0 continuous, 870 integer (870 binary) Found heuristic solution: objective 17.0000000 Root relaxation: objective 2.000000e+00, 995 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 58 17.00000 2.00000 88.2% - 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 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% - 1s 0 0 2.00000 0 58 7.00000 2.00000 71.4% - 1s 0 0 2.00000 0 58 7.00000 2.00000 71.4% - 2s 0 2 2.00000 0 58 7.00000 2.00000 71.4% - 2s 22 16 5.00000 5 140 7.00000 3.00000 57.1% 852 5s 202 67 6.00000 10 56 7.00000 4.00000 42.9% 303 10s 439 92 6.00000 6 111 7.00000 5.00000 28.6% 239 15s 546 107 infeasible 7 7.00000 5.00000 28.6% 228 20s 609 131 6.00000 10 58 7.00000 6.00000 14.3% 238 25s 615 137 6.00000 24 141 7.00000 6.00000 14.3% 252 30s 621 138 6.00000 27 120 7.00000 6.00000 14.3% 255 35s 661 129 6.00000 30 99 7.00000 6.00000 14.3% 267 40s 723 110 6.00000 33 72 7.00000 6.00000 14.3% 289 45s 770 93 6.00000 29 108 7.00000 6.00000 14.3% 301 50s 856 59 infeasible 30 7.00000 6.00000 14.3% 319 55s 908 41 infeasible 33 7.00000 6.00000 14.3% 345 60s 963 20 infeasible 28 7.00000 6.00000 14.3% 355 65s Explored 973 nodes (356630 simplex iterations) in 66.16 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%