Gurobi 5.0.1 (linux64) logging started Tue Nov 20 15:13:03 2012 Optimize a model with 920 rows, 194 columns and 1840 nonzeros Presolve removed 210 rows and 0 columns Presolve time: 0.01s Presolved: 710 rows, 194 columns, 1560 nonzeros Variable types: 0 continuous, 194 integer (194 binary) Found heuristic solution: objective 48.0000000 Root relaxation: objective 7.625000e+01, 397 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 76.25000 0 176 48.00000 76.25000 58.9% - 0s H 0 0 58.0000000 76.25000 31.5% - 0s 0 0 74.57143 0 185 58.00000 74.57143 28.6% - 0s 0 0 73.59091 0 188 58.00000 73.59091 26.9% - 0s 0 0 73.06539 0 190 58.00000 73.06539 26.0% - 0s 0 0 72.68083 0 192 58.00000 72.68083 25.3% - 0s 0 0 72.31032 0 191 58.00000 72.31032 24.7% - 0s 0 0 71.92894 0 191 58.00000 71.92894 24.0% - 0s 0 0 71.60262 0 193 58.00000 71.60262 23.5% - 0s 0 0 71.52801 0 191 58.00000 71.52801 23.3% - 0s 0 0 71.48512 0 191 58.00000 71.48512 23.3% - 0s 0 0 71.36536 0 191 58.00000 71.36536 23.0% - 0s 0 0 71.34392 0 192 58.00000 71.34392 23.0% - 0s 0 0 71.22802 0 192 58.00000 71.22802 22.8% - 0s 0 0 71.18437 0 193 58.00000 71.18437 22.7% - 0s 0 0 71.18437 0 193 58.00000 71.18437 22.7% - 0s 0 2 71.18324 0 193 58.00000 71.18324 22.7% - 0s H 54 32 59.0000000 70.67400 19.8% 72.6 0s * 70 44 22 60.0000000 70.67400 17.8% 62.7 0s 609 331 67.37976 9 192 60.00000 68.71841 14.5% 52.1 5s 1861 829 65.50000 16 151 60.00000 67.95906 13.3% 48.9 10s H 1899 753 61.0000000 67.94737 11.4% 49.0 10s 4348 1861 62.50000 18 103 61.00000 66.42262 8.89% 41.4 15s 7995 3091 cutoff 32 61.00000 65.50000 7.38% 36.8 20s 12177 3877 62.29630 20 137 61.00000 64.90000 6.39% 34.2 25s 16835 4303 62.00000 26 128 61.00000 64.36170 5.51% 32.3 30s 22341 4196 62.66667 29 127 61.00000 63.83333 4.64% 30.9 35s 28073 3236 62.50000 28 123 61.00000 63.25000 3.69% 29.9 40s 33607 780 cutoff 24 61.00000 62.50000 2.46% 29.0 45s Cutting planes: Gomory: 4 Clique: 1 Zero half: 79 Explored 34598 nodes (991253 simplex iterations) in 45.50 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.100000000000e+01, best bound 6.100000000000e+01, gap 0.0%