Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:57:03 2012 Optimize a model with 605 rows, 535 columns and 2045 nonzeros Presolve removed 0 rows and 24 columns Presolve time: 0.00s Presolved: 605 rows, 511 columns, 2021 nonzeros Variable types: 0 continuous, 511 integer (510 binary) Found heuristic solution: objective 108.0000000 Root relaxation: objective 0.000000e+00, 324 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 0 202 108.00000 0.00000 100% - 0s H 0 0 87.0000000 0.00000 100% - 0s H 0 0 82.0000000 0.00000 100% - 0s H 0 0 80.0000000 0.00000 100% - 0s H 0 0 78.0000000 0.00000 100% - 0s 0 0 0.42445 0 203 78.00000 0.42445 99.5% - 0s H 0 0 73.0000000 0.42445 99.4% - 0s 0 0 1.00000 0 207 73.00000 1.00000 98.6% - 0s H 0 0 71.0000000 1.00000 98.6% - 0s 0 0 1.00000 0 206 71.00000 1.00000 98.6% - 0s H 0 0 67.0000000 1.00000 98.5% - 0s H 0 0 65.0000000 1.00000 98.5% - 0s 0 0 1.00000 0 204 65.00000 1.00000 98.5% - 0s H 0 0 62.0000000 1.00000 98.4% - 0s 0 2 1.00000 0 204 62.00000 1.00000 98.4% - 0s H 54 54 34.0000000 1.40171 95.9% 36.8 0s * 62 51 35 30.0000000 1.40171 95.3% 32.8 0s * 725 359 25 29.0000000 9.81818 66.1% 39.2 2s 2145 440 cutoff 23 29.00000 17.21875 40.6% 34.5 5s 4407 620 cutoff 22 29.00000 20.82353 28.2% 31.9 10s 6997 403 cutoff 22 29.00000 23.33133 19.5% 31.2 15s Cutting planes: Gomory: 2 Explored 8262 nodes (250952 simplex iterations) in 17.10 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.900000000000e+01, best bound 2.900000000000e+01, gap 0.0%