Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:36:53 2012 Optimize a model with 297 rows, 316 columns and 1056 nonzeros Presolve removed 0 rows and 26 columns Presolve time: 0.00s Presolved: 297 rows, 290 columns, 1030 nonzeros Variable types: 0 continuous, 290 integer (289 binary) Found heuristic solution: objective 57.0000000 Root relaxation: objective 0.000000e+00, 188 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 0 133 57.00000 0.00000 100% - 0s H 0 0 34.0000000 0.00000 100% - 0s H 0 0 33.0000000 0.00000 100% - 0s H 0 0 27.0000000 0.00000 100% - 0s 0 0 0.31342 0 134 27.00000 0.31342 98.8% - 0s H 0 0 24.0000000 0.31342 98.7% - 0s H 0 0 21.0000000 0.31342 98.5% - 0s 0 0 1.00000 0 135 21.00000 1.00000 95.2% - 0s H 0 0 16.0000000 1.00000 93.7% - 0s 0 0 1.00000 0 139 16.00000 1.00000 93.7% - 0s 0 0 1.00000 0 126 16.00000 1.00000 93.7% - 0s H 0 0 11.0000000 1.00000 90.9% - 0s H 0 0 8.0000000 1.00000 87.5% - 0s 0 2 1.00000 0 126 8.00000 1.00000 87.5% - 0s * 44 18 27 6.0000000 1.00000 83.3% 18.9 0s * 68 12 12 5.0000000 1.79568 64.1% 18.7 0s * 108 3 11 4.0000000 4.00000 0.0% 16.6 0s Cutting planes: Gomory: 4 Explored 109 nodes (3317 simplex iterations) in 0.17 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%