Gurobi 5.0.1 (linux64) logging started Tue Nov 20 14:59:56 2012 Optimize a model with 953 rows, 193 columns and 1906 nonzeros Presolve removed 225 rows and 0 columns Presolve time: 0.01s Presolved: 728 rows, 193 columns, 1606 nonzeros Variable types: 0 continuous, 193 integer (193 binary) Found heuristic solution: objective 54.0000000 Root relaxation: objective 7.621875e+01, 464 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 76.21875 0 184 54.00000 76.21875 41.1% - 0s 0 0 75.08000 0 189 54.00000 75.08000 39.0% - 0s 0 0 74.31976 0 190 54.00000 74.31976 37.6% - 0s 0 0 73.60588 0 192 54.00000 73.60588 36.3% - 0s 0 0 73.02342 0 189 54.00000 73.02342 35.2% - 0s 0 0 72.78591 0 192 54.00000 72.78591 34.8% - 0s 0 0 72.57686 0 193 54.00000 72.57686 34.4% - 0s 0 0 72.35371 0 192 54.00000 72.35371 34.0% - 0s H 0 0 56.0000000 72.35371 29.2% - 0s 0 0 72.09976 0 192 56.00000 72.09976 28.7% - 0s 0 0 72.03037 0 193 56.00000 72.03037 28.6% - 0s 0 0 71.92332 0 192 56.00000 71.92332 28.4% - 0s 0 0 71.78216 0 193 56.00000 71.78216 28.2% - 0s 0 0 71.57062 0 193 56.00000 71.57062 27.8% - 0s 0 0 71.53170 0 191 56.00000 71.53170 27.7% - 0s 0 0 71.45336 0 192 56.00000 71.45336 27.6% - 0s 0 0 71.40766 0 193 56.00000 71.40766 27.5% - 0s 0 0 71.39807 0 193 56.00000 71.39807 27.5% - 0s 0 0 71.39807 0 193 56.00000 71.39807 27.5% - 0s 0 2 71.39641 0 193 56.00000 71.39641 27.5% - 0s H 11 11 58.0000000 71.39641 23.1% 85.9 0s 607 363 63.66667 13 193 58.00000 68.90747 18.8% 52.1 5s H 967 510 59.0000000 68.90747 16.8% 63.0 9s 1107 556 61.16667 29 127 59.00000 68.83499 16.7% 60.5 10s H 1704 698 60.0000000 68.01500 13.4% 52.7 11s H 1762 591 61.0000000 67.99444 11.5% 52.3 11s 3054 1257 63.66667 23 124 61.00000 67.03488 9.89% 47.6 15s 6118 2366 65.31627 24 150 61.00000 65.82609 7.91% 41.2 20s 9358 3085 63.83333 25 126 61.00000 65.07692 6.68% 38.5 25s 13765 3537 62.05263 20 130 61.00000 64.40000 5.57% 35.7 30s 18159 3351 62.80000 26 133 61.00000 63.80000 4.59% 34.0 35s 23426 1747 62.00000 34 130 61.00000 63.00000 3.28% 32.5 40s Cutting planes: Gomory: 1 Zero half: 81 Explored 26402 nodes (826526 simplex iterations) in 42.21 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%