Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:20:38 2012 Optimize a model with 581 rows, 518 columns and 1968 nonzeros Presolve removed 0 rows and 16 columns Presolve time: 0.00s Presolved: 581 rows, 502 columns, 1952 nonzeros Variable types: 0 continuous, 502 integer (501 binary) Found heuristic solution: objective 111.0000000 Root relaxation: objective 0.000000e+00, 287 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 0 204 111.00000 0.00000 100% - 0s H 0 0 90.0000000 0.00000 100% - 0s H 0 0 83.0000000 0.00000 100% - 0s 0 0 0.42924 0 205 83.00000 0.42924 99.5% - 0s H 0 0 78.0000000 0.42924 99.4% - 0s 0 0 0.52632 0 207 78.00000 0.52632 99.3% - 0s H 0 0 77.0000000 0.52632 99.3% - 0s 0 0 0.98759 0 206 77.00000 0.98759 98.7% - 0s H 0 0 70.0000000 0.98759 98.6% - 0s 0 0 0.98761 0 209 70.00000 0.98761 98.6% - 0s 0 0 0.98761 0 207 70.00000 0.98761 98.6% - 0s H 0 0 62.0000000 0.98761 98.4% - 0s H 0 0 61.0000000 0.98761 98.4% - 0s H 0 0 59.0000000 0.98761 98.3% - 0s H 0 0 58.0000000 0.98761 98.3% - 0s 0 2 0.98770 0 207 58.00000 0.98770 98.3% - 0s H 27 27 55.0000000 1.00000 98.2% 49.2 0s H 81 62 27.0000000 1.00000 96.3% 29.5 0s H 242 155 26.0000000 2.33696 91.0% 36.7 0s * 370 180 18 24.0000000 5.77757 75.9% 34.9 0s H 562 203 22.0000000 7.58303 65.5% 34.8 1s Cutting planes: Gomory: 2 Mod-K: 1 Explored 1513 nodes (52661 simplex iterations) in 2.83 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.200000000000e+01, best bound 2.200000000000e+01, gap 0.0%