Gurobi 5.0.1 (linux64) logging started Sun Nov 18 01:50:29 2012 Optimize a model with 355 rows, 239 columns and 1124 nonzeros Presolve time: 0.00s Presolved: 355 rows, 239 columns, 1124 nonzeros Variable types: 0 continuous, 239 integer (239 binary) Found heuristic solution: objective 74.0000000 Root relaxation: objective 0.000000e+00, 97 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 62 74.00000 0.00000 100% - 0s H 0 0 68.0000000 0.00000 100% - 0s H 0 0 62.0000000 0.00000 100% - 0s 0 0 0.73810 0 63 62.00000 0.73810 98.8% - 0s H 0 0 57.0000000 0.73810 98.7% - 0s 0 0 1.42626 0 66 57.00000 1.42626 97.5% - 0s 0 0 1.51322 0 66 57.00000 1.51322 97.3% - 0s 0 0 1.56034 0 67 57.00000 1.56034 97.3% - 0s 0 0 1.64183 0 67 57.00000 1.64183 97.1% - 0s 0 0 1.65129 0 67 57.00000 1.65129 97.1% - 0s 0 2 1.67011 0 67 57.00000 1.67011 97.1% - 0s * 38 38 20 52.0000000 5.70518 89.0% 30.1 0s * 42 37 23 51.0000000 5.70518 88.8% 28.2 0s * 83 67 26 48.0000000 5.70624 88.1% 25.3 0s * 237 180 22 47.0000000 10.37356 77.9% 25.5 0s * 469 289 17 45.0000000 14.37500 68.1% 23.3 0s * 670 342 33 44.0000000 16.63636 62.2% 24.3 0s H 2356 429 43.0000000 26.03774 39.4% 24.2 2s 5821 512 41.53333 24 115 43.00000 32.23077 25.0% 23.0 5s Explored 9589 nodes (208074 simplex iterations) in 7.35 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.300000000000e+01, best bound 4.300000000000e+01, gap 0.0%