Gurobi 5.0.1 (linux64) logging started Sun Nov 18 04:26:51 2012 Optimize a model with 383 rows, 283 columns and 1238 nonzeros Presolve time: 0.00s Presolved: 383 rows, 283 columns, 1238 nonzeros Variable types: 0 continuous, 283 integer (283 binary) Found heuristic solution: objective 82.0000000 Root relaxation: objective 0.000000e+00, 127 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 92 82.00000 0.00000 100% - 0s H 0 0 72.0000000 0.00000 100% - 0s H 0 0 71.0000000 0.00000 100% - 0s 0 0 0.60976 0 94 71.00000 0.60976 99.1% - 0s H 0 0 69.0000000 0.60976 99.1% - 0s 0 0 0.64634 0 94 69.00000 0.64634 99.1% - 0s 0 0 0.75270 0 95 69.00000 0.75270 98.9% - 0s 0 0 0.76303 0 96 69.00000 0.76303 98.9% - 0s 0 0 0.76303 0 96 69.00000 0.76303 98.9% - 0s H 0 0 62.0000000 0.76303 98.8% - 0s 0 2 0.77251 0 96 62.00000 0.77251 98.8% - 0s * 51 38 33 39.0000000 4.92564 87.4% 22.4 0s * 84 54 22 38.0000000 4.96341 86.9% 23.9 0s * 162 115 21 37.0000000 7.37493 80.1% 24.1 0s * 240 170 16 36.0000000 10.17391 71.7% 23.6 0s * 398 214 24 34.0000000 10.59534 68.8% 21.1 0s * 812 320 35 33.0000000 15.51724 53.0% 22.6 1s * 931 309 31 32.0000000 15.51724 51.5% 22.7 1s * 1781 236 31 31.0000000 20.78571 32.9% 21.8 2s Cutting planes: Gomory: 1 Mod-K: 3 Explored 3245 nodes (68680 simplex iterations) in 3.55 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.100000000000e+01, best bound 3.100000000000e+01, gap 0.0%