Gurobi 5.0.1 (linux64) logging started Sun Nov 18 00:29:19 2012 Optimize a model with 323 rows, 213 columns and 1018 nonzeros Presolve time: 0.00s Presolved: 323 rows, 213 columns, 1018 nonzeros Variable types: 0 continuous, 213 integer (213 binary) Found heuristic solution: objective 74.0000000 Root relaxation: objective 0.000000e+00, 79 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 52 74.00000 0.00000 100% - 0s H 0 0 66.0000000 0.00000 100% - 0s 0 0 0.83333 0 54 66.00000 0.83333 98.7% - 0s 0 0 0.83333 0 54 66.00000 0.83333 98.7% - 0s 0 0 0.85714 0 54 66.00000 0.85714 98.7% - 0s 0 0 0.95238 0 54 66.00000 0.95238 98.6% - 0s 0 0 1.00000 0 54 66.00000 1.00000 98.5% - 0s 0 0 1.00570 0 61 66.00000 1.00570 98.5% - 0s H 0 0 59.0000000 1.00570 98.3% - 0s 0 2 1.21098 0 61 59.00000 1.21098 97.9% - 0s * 46 42 28 57.0000000 6.34392 88.9% 23.8 0s * 87 68 24 50.0000000 6.65476 86.7% 23.6 0s * 180 134 19 48.0000000 9.41844 80.4% 23.5 0s * 233 173 19 47.0000000 12.45578 73.5% 23.9 0s * 281 203 19 46.0000000 12.59921 72.6% 23.1 0s * 674 372 31 45.0000000 19.11508 57.5% 22.9 0s * 1014 402 28 43.0000000 19.11508 55.5% 23.7 0s * 1278 356 32 42.0000000 20.60870 50.9% 23.3 1s * 1281 330 31 41.0000000 20.60870 49.7% 23.3 1s H 1358 289 40.0000000 21.16129 47.1% 23.3 1s H 1432 236 37.0000000 21.63333 41.5% 23.3 1s Explored 3041 nodes (71622 simplex iterations) in 2.62 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.700000000000e+01, best bound 3.700000000000e+01, gap 0.0%