Gurobi 5.0.1 (linux64) logging started Sat Nov 17 20:15:51 2012 Optimize a model with 375 rows, 215 columns and 1150 nonzeros Presolve time: 0.00s Presolved: 375 rows, 215 columns, 1150 nonzeros Variable types: 0 continuous, 215 integer (215 binary) Found heuristic solution: objective 95.0000000 Root relaxation: objective 0.000000e+00, 60 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 28 95.00000 0.00000 100% - 0s H 0 0 87.0000000 0.00000 100% - 0s 0 0 0.63636 0 29 87.00000 0.63636 99.3% - 0s 0 0 1.24026 0 31 87.00000 1.24026 98.6% - 0s 0 0 1.35501 0 42 87.00000 1.35501 98.4% - 0s H 0 0 86.0000000 1.35501 98.4% - 0s 0 0 1.47403 0 31 86.00000 1.47403 98.3% - 0s 0 0 1.47403 0 31 86.00000 1.47403 98.3% - 0s 0 0 1.47403 0 31 86.00000 1.47403 98.3% - 0s 0 0 1.47403 0 31 86.00000 1.47403 98.3% - 0s 0 2 1.47871 0 31 86.00000 1.47871 98.3% - 0s * 35 34 22 84.0000000 9.76523 88.4% 34.1 0s * 100 75 17 83.0000000 15.69455 81.1% 34.1 0s H 192 118 78.0000000 23.27273 70.2% 31.4 0s * 1233 332 32 77.0000000 34.93939 54.6% 27.9 1s * 1308 315 32 75.0000000 35.50000 52.7% 27.5 1s * 1661 381 30 73.0000000 39.54545 45.8% 26.7 1s H 1897 399 68.0000000 40.72727 40.1% 26.1 1s 5678 321 cutoff 25 68.00000 53.69231 21.0% 25.4 5s Cutting planes: Gomory: 2 Mod-K: 4 Explored 6950 nodes (170925 simplex iterations) in 5.85 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.800000000000e+01, best bound 6.800000000000e+01, gap 0.0%