Gurobi 5.0.1 (linux64) logging started Sun Nov 18 00:15:31 2012 Optimize a model with 311 rows, 206 columns and 981 nonzeros Presolve time: 0.00s Presolved: 311 rows, 206 columns, 981 nonzeros Variable types: 0 continuous, 206 integer (206 binary) Found heuristic solution: objective 70.0000000 Root relaxation: objective 0.000000e+00, 91 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 51 70.00000 0.00000 100% - 0s H 0 0 67.0000000 0.00000 100% - 0s 0 0 0.70037 0 55 67.00000 0.70037 99.0% - 0s 0 0 0.91056 0 55 67.00000 0.91056 98.6% - 0s 0 0 1.00237 0 64 67.00000 1.00237 98.5% - 0s H 0 0 62.0000000 1.00237 98.4% - 0s 0 0 1.02074 0 64 62.00000 1.02074 98.4% - 0s 0 0 1.02078 0 64 62.00000 1.02078 98.4% - 0s H 0 0 61.0000000 1.02078 98.3% - 0s 0 2 1.02728 0 64 61.00000 1.02728 98.3% - 0s * 35 35 22 53.0000000 4.41270 91.7% 30.8 0s * 37 31 20 52.0000000 4.41270 91.5% 29.2 0s * 65 52 19 46.0000000 4.48062 90.3% 28.0 0s * 67 50 18 45.0000000 4.48062 90.0% 27.2 0s * 240 156 21 44.0000000 11.90476 72.9% 24.7 0s H 245 152 43.0000000 11.90476 72.3% 24.3 0s * 255 148 21 42.0000000 11.90476 71.7% 23.7 0s * 306 158 11 41.0000000 13.06463 68.1% 23.1 0s * 344 173 14 40.0000000 14.44444 63.9% 23.5 0s * 666 269 26 39.0000000 18.55556 52.4% 23.8 0s * 1039 262 26 37.0000000 19.50000 47.3% 25.2 0s Explored 3034 nodes (69551 simplex iterations) in 2.32 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.700000000000e+01, best bound 3.700000000000e+01, gap 0.0%