Gurobi 5.0.1 (linux64) logging started Sun Nov 18 04:16:19 2012 Optimize a model with 371 rows, 272 columns and 1197 nonzeros Presolve time: 0.00s Presolved: 371 rows, 272 columns, 1197 nonzeros Variable types: 0 continuous, 272 integer (272 binary) Found heuristic solution: objective 86.0000000 Found heuristic solution: objective 84.0000000 Root relaxation: objective 0.000000e+00, 120 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 87 84.00000 0.00000 100% - 0s H 0 0 68.0000000 0.00000 100% - 0s H 0 0 65.0000000 0.00000 100% - 0s 0 0 0.52014 0 90 65.00000 0.52014 99.2% - 0s H 0 0 62.0000000 0.52014 99.2% - 0s 0 0 0.67583 0 90 62.00000 0.67583 98.9% - 0s 0 0 0.69485 0 90 62.00000 0.69485 98.9% - 0s H 0 0 61.0000000 0.69485 98.9% - 0s 0 0 0.69485 0 91 61.00000 0.69485 98.9% - 0s 0 0 0.69485 0 90 61.00000 0.69485 98.9% - 0s H 0 0 56.0000000 0.69485 98.8% - 0s 0 2 0.70241 0 90 56.00000 0.70241 98.7% - 0s * 29 29 15 39.0000000 2.80435 92.8% 35.4 0s * 83 46 24 38.0000000 2.92921 92.3% 25.6 0s * 345 187 21 37.0000000 8.94596 75.8% 25.5 0s * 486 244 17 36.0000000 12.25990 65.9% 25.1 0s * 498 231 14 35.0000000 13.01333 62.8% 25.1 0s * 1791 435 28 34.0000000 19.00000 44.1% 24.3 1s 5333 682 28.80000 21 123 34.00000 24.55556 27.8% 22.0 5s * 5930 635 34 33.0000000 25.06122 24.1% 21.8 5s * 6860 480 25 32.0000000 26.13636 18.3% 21.7 6s Explored 8018 nodes (170122 simplex iterations) in 6.85 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.200000000000e+01, best bound 3.200000000000e+01, gap 0.0%