Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:43:45 2013 Optimize a model with 380 rows, 4340 columns and 8820 nonzeros Presolve removed 40 rows and 60 columns Presolve time: 0.01s Presolved: 340 rows, 4280 columns, 8560 nonzeros Variable types: 4200 continuous, 80 integer (80 binary) Root relaxation: objective 3.860476e+04, 494 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 38604.7615 0 3 - 38604.7615 - - 0s 0 0 38671.4349 0 3 - 38671.4349 - - 0s 0 0 38688.5827 0 3 - 38688.5827 - - 0s 0 0 38689.8794 0 3 - 38689.8794 - - 0s 0 0 38693.4692 0 3 - 38693.4692 - - 0s 0 0 38695.9574 0 3 - 38695.9574 - - 0s 0 0 38696.9925 0 3 - 38696.9925 - - 0s 0 0 38697.5558 0 3 - 38697.5558 - - 0s 0 0 38701.8802 0 3 - 38701.8802 - - 0s 0 0 38704.2449 0 3 - 38704.2449 - - 0s 0 0 38705.3136 0 3 - 38705.3136 - - 0s 0 0 38708.1356 0 3 - 38708.1356 - - 0s 0 0 38709.0265 0 3 - 38709.0265 - - 0s 0 0 38709.9528 0 3 - 38709.9528 - - 0s 0 0 38710.3259 0 3 - 38710.3259 - - 0s 0 0 38711.7755 0 3 - 38711.7755 - - 0s 0 0 38712.0145 0 3 - 38712.0145 - - 0s 0 0 38712.4073 0 3 - 38712.4073 - - 0s 0 0 38712.4073 0 3 - 38712.4073 - - 0s H 0 0 39080.807514 38712.4073 0.94% - 0s 0 2 38718.2918 0 3 39080.8075 38718.2918 0.93% - 0s * 7 3 5 38858.752096 38851.6739 0.02% 19.7 0s Cutting planes: Flow cover: 15 Explored 10 nodes (878 simplex iterations) in 0.24 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.885875209612e+04, best bound 3.885714749856e+04, gap 0.0041%