Gurobi 5.0.1 (linux64) logging started Tue Apr 23 22:02:09 2013 Optimize a model with 75 rows, 1275 columns and 2525 nonzeros Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 75 rows, 1274 columns, 2524 nonzeros Variable types: 1250 continuous, 24 integer (24 binary) Root relaxation: objective 7.184573e+05, 28 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 718457.333 0 24 - 718457.333 - - 0s H 0 0 1072291.1500 718457.333 33.0% - 0s H 0 0 1059421.4625 718457.333 32.2% - 0s 0 0 853845.485 0 13 1059421.46 853845.485 19.4% - 0s H 0 0 1056750.2469 853845.485 19.2% - 0s 0 0 883666.925 0 12 1056750.25 883666.925 16.4% - 0s H 0 0 1055716.9659 883666.925 16.3% - 0s 0 0 890915.525 0 11 1055716.97 890915.525 15.6% - 0s H 0 0 1044639.0599 890915.525 14.7% - 0s 0 0 894844.112 0 4 1044639.06 894844.112 14.3% - 0s H 0 0 945988.63417 894844.112 5.41% - 0s H 0 0 896617.53750 894844.112 0.20% - 0s 0 2 894984.776 0 3 896617.537 894984.776 0.18% - 0s Cutting planes: Implied bound: 112 Flow cover: 3 Explored 9 nodes (208 simplex iterations) in 0.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.966175375000e+05, best bound 8.966175375000e+05, gap 0.0%