Gurobi 5.0.1 (linux64) logging started Sun Nov 18 04:19:11 2012 Optimize a model with 391 rows, 284 columns and 1259 nonzeros Presolve time: 0.00s Presolved: 391 rows, 284 columns, 1259 nonzeros Variable types: 0 continuous, 284 integer (284 binary) Found heuristic solution: objective 89.0000000 Found heuristic solution: objective 88.0000000 Root relaxation: objective 0.000000e+00, 129 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 89 88.00000 0.00000 100% - 0s H 0 0 78.0000000 0.00000 100% - 0s H 0 0 77.0000000 0.00000 100% - 0s 0 0 0.57785 0 91 77.00000 0.57785 99.2% - 0s H 0 0 70.0000000 0.57785 99.2% - 0s 0 0 0.69823 0 91 70.00000 0.69823 99.0% - 0s H 0 0 68.0000000 0.69823 99.0% - 0s 0 0 0.71429 0 91 68.00000 0.71429 98.9% - 0s H 0 0 66.0000000 0.71429 98.9% - 0s 0 0 0.72387 0 91 66.00000 0.72387 98.9% - 0s 0 0 0.72387 0 91 66.00000 0.72387 98.9% - 0s 0 0 0.72387 0 91 66.00000 0.72387 98.9% - 0s H 0 0 61.0000000 0.72387 98.8% - 0s 0 2 0.73333 0 91 61.00000 0.73333 98.8% - 0s H 54 49 47.0000000 4.56122 90.3% 23.7 0s * 103 75 33 46.0000000 4.61987 90.0% 23.0 0s H 135 83 40.0000000 6.52771 83.7% 24.5 0s * 455 263 19 39.0000000 11.75000 69.9% 26.4 0s * 1443 376 31 38.0000000 18.09524 52.4% 27.3 1s H 1702 346 34.0000000 20.11765 40.8% 27.1 1s H 2288 337 33.0000000 22.86486 30.7% 26.2 2s Explored 3936 nodes (97937 simplex iterations) in 4.17 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.300000000000e+01, best bound 3.300000000000e+01, gap 0.0%