Gurobi 5.0.1 (linux64) logging started Tue Nov 20 15:17:19 2012 Optimize a model with 970 rows, 194 columns and 1940 nonzeros Presolve removed 260 rows and 0 columns Presolve time: 0.01s Presolved: 710 rows, 194 columns, 1597 nonzeros Variable types: 0 continuous, 194 integer (194 binary) Found heuristic solution: objective 51.0000000 Root relaxation: objective 7.400000e+01, 472 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 74.00000 0 146 51.00000 74.00000 45.1% - 0s 0 0 73.16896 0 189 51.00000 73.16896 43.5% - 0s H 0 0 53.0000000 73.16896 38.1% - 0s 0 0 72.58216 0 188 53.00000 72.58216 36.9% - 0s H 0 0 54.0000000 72.58216 34.4% - 0s 0 0 72.04688 0 190 54.00000 72.04688 33.4% - 0s 0 0 71.74483 0 191 54.00000 71.74483 32.9% - 0s 0 0 71.55675 0 191 54.00000 71.55675 32.5% - 0s 0 0 71.33696 0 193 54.00000 71.33696 32.1% - 0s 0 0 71.25957 0 192 54.00000 71.25957 32.0% - 0s 0 0 71.14754 0 192 54.00000 71.14754 31.8% - 0s H 0 0 58.0000000 71.14754 22.7% - 0s 0 0 71.08534 0 194 58.00000 71.08534 22.6% - 0s 0 0 70.98967 0 194 58.00000 70.98967 22.4% - 0s 0 0 70.91822 0 193 58.00000 70.91822 22.3% - 0s 0 0 70.89313 0 193 58.00000 70.89313 22.2% - 0s 0 0 70.84214 0 194 58.00000 70.84214 22.1% - 0s 0 0 70.69033 0 194 58.00000 70.69033 21.9% - 0s 0 0 70.58982 0 192 58.00000 70.58982 21.7% - 0s 0 0 70.46709 0 194 58.00000 70.46709 21.5% - 0s 0 0 70.34305 0 193 58.00000 70.34305 21.3% - 0s 0 0 70.30483 0 192 58.00000 70.30483 21.2% - 0s 0 0 70.28281 0 193 58.00000 70.28281 21.2% - 0s 0 0 70.28281 0 193 58.00000 70.28281 21.2% - 0s H 0 0 59.0000000 70.28281 19.1% - 0s 0 2 70.28169 0 193 59.00000 70.28169 19.1% - 0s H 163 83 60.0000000 68.98193 15.0% 67.4 0s 613 270 64.67105 13 194 60.00000 67.68980 12.8% 55.3 5s 1986 777 cutoff 35 60.00000 66.80392 11.3% 54.8 10s 4099 1732 63.45455 22 145 60.00000 65.54167 9.24% 47.9 15s 6861 2611 63.46437 21 147 60.00000 64.79720 8.00% 43.6 20s 10120 3381 61.80769 22 141 60.00000 64.22973 7.05% 40.9 25s 13861 3845 61.61538 33 135 60.00000 63.74138 6.24% 38.7 30s 18282 3996 61.13559 20 138 60.00000 63.31410 5.52% 36.9 35s 22852 3793 62.00000 25 119 60.00000 62.92308 4.87% 35.6 40s 27443 3012 61.00000 21 122 60.00000 62.50000 4.17% 34.8 45s 32262 1370 cutoff 35 60.00000 62.00000 3.33% 34.0 50s Cutting planes: Gomory: 2 Zero half: 72 Explored 34664 nodes (1149527 simplex iterations) in 51.83 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.000000000000e+01, best bound 6.000000000000e+01, gap 0.0%