Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:16:34 2013 Optimize a model with 280 rows, 4100 columns and 8200 nonzeros Presolve removed 20 rows and 20 columns Presolve time: 0.00s Presolved: 320 rows, 4120 columns, 8260 nonzeros Variable types: 4080 continuous, 40 integer (40 binary) Root relaxation: objective 3.860476e+04, 432 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 38604.7615 0 6 - 38604.7615 - - 0s H 0 0 39452.594278 38604.7615 2.15% - 0s 0 0 38707.2876 0 6 39452.5943 38707.2876 1.89% - 0s 0 0 38731.3467 0 6 39452.5943 38731.3467 1.83% - 0s 0 0 38745.4731 0 6 39452.5943 38745.4731 1.79% - 0s 0 0 38752.1231 0 6 39452.5943 38752.1231 1.78% - 0s 0 0 38753.8838 0 6 39452.5943 38753.8838 1.77% - 0s 0 0 38756.2379 0 6 39452.5943 38756.2379 1.77% - 0s 0 0 38758.4228 0 6 39452.5943 38758.4228 1.76% - 0s 0 0 38760.3571 0 6 39452.5943 38760.3571 1.75% - 0s 0 0 38762.1070 0 6 39452.5943 38762.1070 1.75% - 0s 0 0 38763.8801 0 6 39452.5943 38763.8801 1.75% - 0s 0 0 38765.2241 0 6 39452.5943 38765.2241 1.74% - 0s 0 0 38770.0617 0 6 39452.5943 38770.0617 1.73% - 0s 0 0 38772.9287 0 6 39452.5943 38772.9287 1.72% - 0s 0 0 38774.0005 0 6 39452.5943 38774.0005 1.72% - 0s 0 0 38774.6276 0 6 39452.5943 38774.6276 1.72% - 0s 0 0 38775.4283 0 6 39452.5943 38775.4283 1.72% - 0s 0 0 38776.1883 0 6 39452.5943 38776.1883 1.71% - 0s 0 0 38776.9074 0 6 39452.5943 38776.9074 1.71% - 0s 0 0 38776.9551 0 6 39452.5943 38776.9551 1.71% - 0s 0 0 38777.3394 0 6 39452.5943 38777.3394 1.71% - 0s 0 0 38777.9657 0 6 39452.5943 38777.9657 1.71% - 0s 0 0 38778.1605 0 6 39452.5943 38778.1605 1.71% - 0s 0 0 38778.7526 0 6 39452.5943 38778.7526 1.71% - 0s 0 0 38779.1373 0 6 39452.5943 38779.1373 1.71% - 0s 0 0 38779.2189 0 6 39452.5943 38779.2189 1.71% - 0s 0 0 38780.1016 0 6 39452.5943 38780.1016 1.70% - 0s 0 0 38780.5789 0 6 39452.5943 38780.5789 1.70% - 0s 0 0 38780.8474 0 6 39452.5943 38780.8474 1.70% - 0s 0 0 38781.0631 0 6 39452.5943 38781.0631 1.70% - 0s H 0 0 38857.294176 38781.0631 0.20% - 0s 0 0 38781.0751 0 6 38857.2942 38781.0751 0.20% - 0s 0 0 38818.6655 0 4 38857.2942 38818.6655 0.10% - 0s 0 0 38818.6655 0 4 38857.2942 38818.6655 0.10% - 0s H 0 0 38852.147852 38818.6655 0.09% - 0s 0 2 38818.7474 0 4 38852.1479 38818.7474 0.09% - 0s Cutting planes: Flow cover: 17 Explored 3 nodes (1288 simplex iterations) in 0.23 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.885214785166e+04, best bound 3.885119918711e+04, gap 0.0024%