Gurobi 5.0.1 (linux64) logging started Sun Nov 18 04:26:54 2012 Optimize a model with 415 rows, 299 columns and 1334 nonzeros Presolve time: 0.00s Presolved: 415 rows, 299 columns, 1334 nonzeros Variable types: 0 continuous, 299 integer (299 binary) Found heuristic solution: objective 96.0000000 Root relaxation: objective 0.000000e+00, 133 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 91 96.00000 0.00000 100% - 0s H 0 0 77.0000000 0.00000 100% - 0s H 0 0 76.0000000 0.00000 100% - 0s 0 0 0.51751 0 92 76.00000 0.51751 99.3% - 0s 0 0 1.24496 0 94 76.00000 1.24496 98.4% - 0s 0 0 1.64378 0 95 76.00000 1.64378 97.8% - 0s H 0 0 70.0000000 1.64378 97.7% - 0s H 0 0 67.0000000 1.64378 97.5% - 0s 0 0 1.64829 0 96 67.00000 1.64829 97.5% - 0s H 0 0 65.0000000 1.64829 97.5% - 0s 0 2 1.66094 0 96 65.00000 1.66094 97.4% - 0s * 38 38 21 44.0000000 4.31845 90.2% 36.6 0s * 189 153 22 41.0000000 6.24704 84.8% 34.8 0s * 340 269 23 40.0000000 9.51445 76.2% 36.4 0s * 672 402 35 39.0000000 10.68896 72.6% 34.4 1s * 968 432 28 38.0000000 18.05263 52.5% 33.1 1s * 986 382 34 36.0000000 18.16667 49.5% 32.9 1s * 1048 351 29 35.0000000 18.27536 47.8% 32.5 1s Explored 2867 nodes (77717 simplex iterations) in 3.66 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.500000000000e+01, best bound 3.500000000000e+01, gap 0.0%