Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:12:27 2012 Optimize a model with 489 rows, 453 columns and 1673 nonzeros Presolve removed 0 rows and 25 columns Presolve time: 0.00s Presolved: 489 rows, 428 columns, 1648 nonzeros Variable types: 0 continuous, 428 integer (427 binary) Found heuristic solution: objective 103.0000000 Root relaxation: objective 0.000000e+00, 259 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 0 181 103.00000 0.00000 100% - 0s H 0 0 64.0000000 0.00000 100% - 0s 0 0 0.43109 0 182 64.00000 0.43109 99.3% - 0s H 0 0 50.0000000 0.43109 99.1% - 0s 0 0 1.00000 0 181 50.00000 1.00000 98.0% - 0s H 0 0 40.0000000 1.00000 97.5% - 0s 0 0 1.00000 0 185 40.00000 1.00000 97.5% - 0s 0 0 1.00000 0 185 40.00000 1.00000 97.5% - 0s 0 2 1.00000 0 181 40.00000 1.00000 97.5% - 0s * 52 41 27 21.0000000 1.68141 92.0% 35.2 0s * 84 50 21 18.0000000 1.69111 90.6% 36.3 0s * 676 133 16 17.0000000 9.93333 41.6% 30.7 0s Cutting planes: Gomory: 3 Zero half: 3 Explored 1165 nodes (36612 simplex iterations) in 1.55 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.700000000000e+01, best bound 1.700000000000e+01, gap 0.0%