Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:28:27 2012 Optimize a model with 489 rows, 461 columns and 1681 nonzeros Presolve removed 0 rows and 15 columns Presolve time: 0.00s Presolved: 489 rows, 446 columns, 1666 nonzeros Variable types: 0 continuous, 446 integer (445 binary) Found heuristic solution: objective 92.0000000 Root relaxation: objective 0.000000e+00, 239 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 0 185 92.00000 0.00000 100% - 0s H 0 0 86.0000000 0.00000 100% - 0s H 0 0 60.0000000 0.00000 100% - 0s H 0 0 57.0000000 0.00000 100% - 0s 0 0 0.41369 0 186 57.00000 0.41369 99.3% - 0s H 0 0 53.0000000 0.41369 99.2% - 0s H 0 0 46.0000000 0.41369 99.1% - 0s 0 0 1.00000 0 188 46.00000 1.00000 97.8% - 0s H 0 0 41.0000000 1.00000 97.6% - 0s 0 0 1.00801 0 190 41.00000 1.00801 97.5% - 0s H 0 0 38.0000000 1.00801 97.3% - 0s H 0 0 37.0000000 1.00801 97.3% - 0s H 0 0 31.0000000 1.00801 96.7% - 0s 0 2 1.00806 0 190 31.00000 1.00806 96.7% - 0s H 27 27 29.0000000 1.15244 96.0% 13.4 0s H 54 52 22.0000000 1.15244 94.8% 18.0 0s H 134 93 17.0000000 1.15244 93.2% 16.1 0s H 190 125 16.0000000 1.15244 92.8% 22.7 0s * 534 200 26 15.0000000 1.43118 90.5% 35.6 0s Cutting planes: Gomory: 18 Explored 2460 nodes (66606 simplex iterations) in 4.94 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.500000000000e+01, best bound 1.500000000000e+01, gap 0.0%