Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:49:31 2013 Optimize a model with 2280 rows, 10040 columns and 24020 nonzeros Presolve removed 40 rows and 60 columns Presolve time: 0.38s Presolved: 2240 rows, 9980 columns, 19960 nonzeros Variable types: 8000 continuous, 1980 integer (1980 binary) Root relaxation: objective 3.600389e+04, 385 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 36003.8892 0 2 - 36003.8892 - - 0s 0 0 36066.1546 0 4 - 36066.1546 - - 0s 0 0 36075.4298 0 4 - 36075.4298 - - 0s 0 0 36076.8270 0 4 - 36076.8270 - - 0s 0 0 36080.2980 0 4 - 36080.2980 - - 0s 0 0 36082.4932 0 4 - 36082.4932 - - 0s 0 0 36088.3389 0 4 - 36088.3389 - - 0s 0 0 36088.9224 0 4 - 36088.9224 - - 0s 0 0 36092.0752 0 4 - 36092.0752 - - 0s 0 0 36098.0341 0 4 - 36098.0341 - - 0s 0 0 36098.5158 0 4 - 36098.5158 - - 0s 0 0 36100.5007 0 4 - 36100.5007 - - 0s 0 0 36100.5007 0 4 - 36100.5007 - - 1s 0 2 36101.4114 0 4 - 36101.4114 - - 1s * 89 26 87 36255.045567 36155.2559 0.28% 2.0 2s * 103 23 20 36243.107519 36196.3678 0.13% 2.9 2s * 125 20 20 36237.954241 36197.5587 0.11% 3.5 2s * 138 14 20 36232.724259 36198.4413 0.09% 3.8 2s * 145 16 20 36228.539976 36199.2744 0.08% 3.9 2s H 146 14 36227.417140 36199.2744 0.08% 3.9 2s * 155 12 20 36222.032425 36200.0571 0.06% 4.0 2s * 163 10 21 36218.552981 36200.7885 0.05% 4.0 2s * 166 9 21 36216.564516 36200.7885 0.04% 4.0 2s * 170 7 21 36211.017323 36201.4680 0.03% 4.0 2s H 173 1 36205.391159 36201.4680 0.01% 4.0 2s Cutting planes: Gomory: 2 Flow cover: 9 Explored 174 nodes (1773 simplex iterations) in 2.40 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.620539115879e+04, best bound 3.620209451693e+04, gap 0.0091%