Gurobi 5.0.1 (linux64) logging started Sun Nov 18 04:23:28 2012 Optimize a model with 411 rows, 296 columns and 1321 nonzeros Presolve time: 0.00s Presolved: 411 rows, 296 columns, 1321 nonzeros Variable types: 0 continuous, 296 integer (296 binary) Found heuristic solution: objective 89.0000000 Root relaxation: objective 0.000000e+00, 124 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 90 89.00000 0.00000 100% - 0s H 0 0 80.0000000 0.00000 100% - 0s H 0 0 76.0000000 0.00000 100% - 0s H 0 0 75.0000000 0.00000 100% - 0s 0 0 0.56410 0 91 75.00000 0.56410 99.2% - 0s H 0 0 68.0000000 0.56410 99.2% - 0s 0 0 1.15175 0 93 68.00000 1.15175 98.3% - 0s 0 0 1.17475 0 95 68.00000 1.17475 98.3% - 0s 0 0 1.17525 0 94 68.00000 1.17525 98.3% - 0s 0 0 1.18236 0 97 68.00000 1.18236 98.3% - 0s 0 2 1.19717 0 97 68.00000 1.19717 98.2% - 0s H 27 27 67.0000000 3.56016 94.7% 36.2 0s * 46 46 29 55.0000000 3.56016 93.5% 30.0 0s * 52 43 31 54.0000000 3.56016 93.4% 27.0 0s * 97 75 29 48.0000000 3.57725 92.5% 26.7 0s * 143 108 23 46.0000000 5.95216 87.1% 28.1 0s H 270 196 42.0000000 6.90976 83.5% 31.3 0s * 417 299 23 41.0000000 7.78895 81.0% 32.0 0s H 836 463 39.0000000 13.52632 65.3% 31.5 1s H 2255 357 38.0000000 25.80000 32.1% 25.3 2s 4780 313 cutoff 25 38.00000 30.87273 18.8% 22.1 5s Explored 6439 nodes (136136 simplex iterations) in 6.23 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.800000000000e+01, best bound 3.800000000000e+01, gap 0.0%