Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:52:28 2013 Optimize a model with 715 rows, 42315 columns and 84565 nonzeros Presolve time: 0.06s Presolved: 715 rows, 42315 columns, 84565 nonzeros Variable types: 42250 continuous, 65 integer (65 binary) Root relaxation: objective 7.775076e+04, 1746 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 77750.7621 0 12 - 77750.7621 - - 0s H 0 0 86991.000000 77750.7621 10.6% - 0s H 0 0 86367.000000 77750.7621 10.0% - 0s 0 0 78400.1541 0 7 86367.0000 78400.1541 9.22% - 0s H 0 0 84358.931151 78400.1541 7.06% - 0s H 0 0 83585.000000 78400.1541 6.20% - 0s 0 0 78450.2395 0 6 83585.0000 78450.2395 6.14% - 0s H 0 0 83327.000000 78450.2395 5.85% - 0s 0 0 78454.5185 0 6 83327.0000 78454.5185 5.85% - 0s H 0 0 83227.000000 78454.5185 5.73% - 0s 0 0 78458.4225 0 6 83227.0000 78458.4225 5.73% - 0s 0 0 78459.1853 0 8 83227.0000 78459.1853 5.73% - 0s 0 0 78460.8059 0 6 83227.0000 78460.8059 5.73% - 0s 0 0 78461.0092 0 6 83227.0000 78461.0092 5.73% - 0s H 0 0 79187.000000 78461.0092 0.92% - 1s 0 2 78468.5146 0 6 79187.0000 78468.5146 0.91% - 1s H 17 15 79134.000000 78582.9973 0.70% 36.6 1s H 18 16 79124.000000 78582.9973 0.68% 35.6 1s H 19 17 78977.000000 78582.9973 0.50% 34.9 1s * 22 15 20 78917.000000 78582.9973 0.42% 35.9 1s * 62 22 9 78873.000000 78662.1892 0.27% 55.4 2s H 82 5 78834.000000 78773.5263 0.08% 55.4 2s Cutting planes: Implied bound: 236 Flow cover: 6 Explored 90 nodes (6951 simplex iterations) in 2.60 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.883400000000e+04, best bound 7.883400000000e+04, gap 0.0%