Gurobi 5.0.1 (linux64) logging started Sun Nov 18 02:28:50 2012 Optimize a model with 449 rows, 288 columns and 1408 nonzeros Presolve time: 0.00s Presolved: 449 rows, 288 columns, 1408 nonzeros Variable types: 0 continuous, 288 integer (288 binary) Found heuristic solution: objective 125.0000000 Found heuristic solution: objective 120.0000000 Root relaxation: objective 0.000000e+00, 113 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 64 120.00000 0.00000 100% - 0s H 0 0 108.0000000 0.00000 100% - 0s H 0 0 99.0000000 0.00000 100% - 0s 0 0 0.83871 0 66 99.00000 0.83871 99.2% - 0s 0 0 0.87097 0 66 99.00000 0.87097 99.1% - 0s 0 0 0.88868 0 73 99.00000 0.88868 99.1% - 0s 0 0 0.91110 0 84 99.00000 0.91110 99.1% - 0s 0 0 0.94386 0 94 99.00000 0.94386 99.0% - 0s H 0 0 95.0000000 0.94386 99.0% - 0s H 0 0 92.0000000 0.94386 99.0% - 0s 0 2 0.96720 0 94 92.00000 0.96720 98.9% - 0s * 59 59 32 79.0000000 4.94674 93.7% 27.6 0s * 164 138 29 76.0000000 7.92931 89.6% 26.9 0s * 167 131 29 75.0000000 7.92931 89.4% 26.6 0s * 334 245 31 69.0000000 9.29032 86.5% 27.1 0s * 693 407 36 68.0000000 14.60045 78.5% 25.9 1s * 1406 552 39 65.0000000 27.16667 58.2% 24.4 1s * 1927 699 36 64.0000000 31.00000 51.6% 23.7 2s H 2331 810 62.0000000 32.00000 48.4% 23.5 2s H 2522 863 61.0000000 32.25000 47.1% 23.6 3s H 2633 825 58.0000000 32.36364 44.2% 23.6 3s 4095 1075 55.85106 24 146 58.00000 36.00000 37.9% 22.8 5s 9373 1684 52.13725 23 147 58.00000 42.58621 26.6% 21.6 10s 15619 1814 cutoff 25 58.00000 45.80000 21.0% 20.8 15s 22496 1398 53.46154 23 148 58.00000 48.18750 16.9% 20.3 20s Cutting planes: Gomory: 1 Mod-K: 4 Explored 28815 nodes (568203 simplex iterations) in 24.06 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.800000000000e+01, best bound 5.800000000000e+01, gap 0.0%