Gurobi 5.0.1 (linux64) logging started Sun Nov 18 00:54:58 2012 Optimize a model with 345 rows, 226 columns and 1086 nonzeros Presolve time: 0.00s Presolved: 345 rows, 226 columns, 1086 nonzeros Variable types: 0 continuous, 226 integer (226 binary) Found heuristic solution: objective 84.0000000 Root relaxation: objective 0.000000e+00, 99 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 54 84.00000 0.00000 100% - 0s H 0 0 77.0000000 0.00000 100% - 0s H 0 0 73.0000000 0.00000 100% - 0s 0 0 1.05000 0 56 73.00000 1.05000 98.6% - 0s 0 0 1.12500 0 56 73.00000 1.12500 98.5% - 0s H 0 0 70.0000000 1.12500 98.4% - 0s 0 0 1.12500 0 56 70.00000 1.12500 98.4% - 0s 0 0 1.12500 0 56 70.00000 1.12500 98.4% - 0s 0 0 1.12500 0 56 70.00000 1.12500 98.4% - 0s H 0 0 69.0000000 1.12500 98.4% - 0s H 0 0 68.0000000 1.12500 98.3% - 0s 0 2 1.13242 0 56 68.00000 1.13242 98.3% - 0s * 45 40 27 60.0000000 4.47222 92.5% 25.1 0s * 79 64 22 57.0000000 4.50000 92.1% 25.4 0s * 120 91 24 52.0000000 8.12745 84.4% 25.0 0s * 122 81 23 51.0000000 8.12745 84.1% 24.8 0s * 304 235 20 50.0000000 11.63387 76.7% 25.9 0s * 564 315 17 46.0000000 15.62000 66.0% 22.7 0s * 1035 429 29 45.0000000 19.54545 56.6% 23.5 1s H 2403 465 44.0000000 24.00000 45.5% 22.0 2s H 2627 465 42.0000000 25.20690 40.0% 21.8 2s 6114 159 37.71429 22 112 42.00000 36.37500 13.4% 19.8 5s Cutting planes: Gomory: 1 Zero half: 4 Explored 6402 nodes (125592 simplex iterations) in 5.12 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.200000000000e+01, best bound 4.200000000000e+01, gap 0.0%