Gurobi 5.0.1 (linux64) logging started Sat Dec 8 02:35:18 2012 Optimize a model with 285 rows, 270 columns and 891 nonzeros Presolve removed 54 rows and 44 columns Presolve time: 0.00s Presolved: 231 rows, 226 columns, 734 nonzeros Variable types: 153 continuous, 73 integer (73 binary) Root relaxation: objective 3.186823e+04, 128 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 31868.2319 0 38 - 31868.2319 - - 0s 0 0 35562.2664 0 20 - 35562.2664 - - 0s 0 0 35727.1383 0 14 - 35727.1383 - - 0s 0 0 35780.2146 0 20 - 35780.2146 - - 0s 0 0 35823.6582 0 16 - 35823.6582 - - 0s 0 0 35828.4620 0 15 - 35828.4620 - - 0s 0 0 35857.9207 0 21 - 35857.9207 - - 0s H 0 0 47906.000000 35857.9207 25.1% - 0s 0 2 35860.9527 0 21 47906.0000 35860.9527 25.1% - 0s H 27 23 37345.000000 35877.2254 3.93% 5.1 0s * 38 26 31 37270.000000 35877.2254 3.74% 4.5 0s * 240 109 26 37188.000000 35955.4003 3.31% 5.2 0s H 298 109 37025.000000 35999.5489 2.77% 5.2 0s * 444 159 31 36824.000000 36038.3779 2.13% 5.5 0s H 571 158 36655.000000 36068.0269 1.60% 5.5 0s H 573 105 36473.000000 36068.0269 1.11% 5.5 0s * 935 25 15 36434.000000 36358.8617 0.21% 5.5 0s Cutting planes: Gomory: 12 Cover: 14 Flow cover: 40 Flow path: 32 Zero half: 1 Explored 964 nodes (5461 simplex iterations) in 0.21 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.643400000000e+04, best bound 3.643091908922e+04, gap 0.0085%