Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:48:40 2012 Optimize a model with 565 rows, 514 columns and 1924 nonzeros Presolve removed 0 rows and 22 columns Presolve time: 0.00s Presolved: 565 rows, 492 columns, 1902 nonzeros Variable types: 0 continuous, 492 integer (491 binary) Found heuristic solution: objective 102.0000000 Root relaxation: objective 0.000000e+00, 283 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 197 102.00000 0.00000 100% - 0s H 0 0 69.0000000 0.00000 100% - 0s H 0 0 65.0000000 0.00000 100% - 0s 0 0 0.37211 0 200 65.00000 0.37211 99.4% - 0s H 0 0 63.0000000 0.37211 99.4% - 0s 0 0 0.74525 0 200 63.00000 0.74525 98.8% - 0s H 0 0 54.0000000 0.74525 98.6% - 0s 0 0 0.74530 0 202 54.00000 0.74530 98.6% - 0s 0 0 0.74530 0 201 54.00000 0.74530 98.6% - 0s H 0 0 53.0000000 0.74530 98.6% - 0s 0 2 0.75249 0 201 53.00000 0.75249 98.6% - 0s H 27 27 42.0000000 2.43859 94.2% 40.1 0s H 54 54 29.0000000 2.43859 91.6% 28.5 0s * 64 60 34 27.0000000 2.43859 91.0% 25.7 0s * 106 73 25 26.0000000 2.64238 89.8% 27.1 0s * 154 92 27 25.0000000 3.86364 84.5% 26.3 0s * 247 125 24 24.0000000 5.00000 79.2% 30.0 0s H 248 109 23.0000000 5.00000 78.3% 29.9 0s 3051 1059 20.62651 26 204 23.00000 12.84906 44.1% 24.4 5s 6554 1889 21.75000 27 192 23.00000 14.93617 35.1% 21.9 10s 10252 2410 20.90303 25 204 23.00000 16.33333 29.0% 20.6 15s 14386 2737 19.68902 21 199 23.00000 17.42105 24.3% 19.6 20s 18697 2708 20.72941 23 206 23.00000 18.17544 21.0% 19.1 25s 23138 2373 20.32000 23 188 23.00000 18.80000 18.3% 18.6 30s 27445 1726 21.65060 25 206 23.00000 19.49219 15.3% 18.3 35s Explored 31904 nodes (581595 simplex iterations) in 39.79 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.300000000000e+01, best bound 2.300000000000e+01, gap 0.0%