Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:41:42 2012 Optimize a model with 291 rows, 225 columns and 950 nonzeros Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 291 rows, 224 columns, 949 nonzeros Variable types: 0 continuous, 224 integer (223 binary) Found heuristic solution: objective 61.0000000 Root relaxation: objective 0.000000e+00, 122 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 78 61.00000 0.00000 100% - 0s H 0 0 45.0000000 0.00000 100% - 0s 0 0 0.57853 0 79 45.00000 0.57853 98.7% - 0s H 0 0 39.0000000 0.57853 98.5% - 0s 0 0 1.15943 0 81 39.00000 1.15943 97.0% - 0s H 0 0 36.0000000 1.15943 96.8% - 0s 0 0 1.37896 0 82 36.00000 1.37896 96.2% - 0s 0 0 1.38467 0 82 36.00000 1.38467 96.2% - 0s 0 0 1.38467 0 82 36.00000 1.38467 96.2% - 0s H 0 0 32.0000000 1.38467 95.7% - 0s H 0 0 31.0000000 1.38467 95.5% - 0s 0 2 1.38801 0 82 31.00000 1.38801 95.5% - 0s * 29 28 18 27.0000000 3.31263 87.7% 31.3 0s * 59 39 17 26.0000000 3.31302 87.3% 30.0 0s * 88 51 13 25.0000000 5.92029 76.3% 28.5 0s * 179 109 18 24.0000000 6.43842 73.2% 28.3 0s * 199 115 17 23.0000000 6.56475 71.5% 27.2 0s H 662 177 22.0000000 12.01449 45.4% 25.2 0s Cutting planes: Gomory: 4 Mod-K: 1 Explored 1824 nodes (42231 simplex iterations) in 1.45 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%