Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:22:53 2012 Optimize a model with 469 rows, 449 columns and 1619 nonzeros Presolve removed 0 rows and 18 columns Presolve time: 0.00s Presolved: 469 rows, 431 columns, 1601 nonzeros Variable types: 0 continuous, 431 integer (430 binary) Found heuristic solution: objective 92.0000000 Root relaxation: objective 0.000000e+00, 235 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 0 187 92.00000 0.00000 100% - 0s H 0 0 69.0000000 0.00000 100% - 0s H 0 0 67.0000000 0.00000 100% - 0s H 0 0 61.0000000 0.00000 100% - 0s 0 0 0.42671 0 188 61.00000 0.42671 99.3% - 0s H 0 0 58.0000000 0.42671 99.3% - 0s H 0 0 47.0000000 0.42671 99.1% - 0s 0 0 1.00000 0 193 47.00000 1.00000 97.9% - 0s H 0 0 32.0000000 1.00000 96.9% - 0s 0 0 1.00000 0 193 32.00000 1.00000 96.9% - 0s 0 0 1.00000 0 190 32.00000 1.00000 96.9% - 0s H 0 0 29.0000000 1.00000 96.6% - 0s 0 2 1.00000 0 189 29.00000 1.00000 96.6% - 0s H 27 27 23.0000000 1.00000 95.7% 59.6 0s H 54 50 17.0000000 1.00000 94.1% 35.3 0s * 80 54 14 15.0000000 2.41071 83.9% 33.9 0s * 108 66 18 14.0000000 2.56000 81.7% 29.7 0s H 139 69 13.0000000 3.34457 74.3% 29.9 0s * 177 54 19 12.0000000 3.36735 71.9% 26.2 0s Cutting planes: Gomory: 3 Explored 379 nodes (12543 simplex iterations) in 0.57 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.200000000000e+01, best bound 1.200000000000e+01, gap 0.0%