Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:48:35 2012 Optimize a model with 367 rows, 265 columns and 1180 nonzeros Presolve time: 0.00s Presolved: 367 rows, 265 columns, 1180 nonzeros Variable types: 0 continuous, 265 integer (265 binary) Found heuristic solution: objective 71.0000000 Root relaxation: objective 0.000000e+00, 131 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 81 71.00000 0.00000 100% - 0s H 0 0 66.0000000 0.00000 100% - 0s H 0 0 57.0000000 0.00000 100% - 0s 0 0 0.44994 0 83 57.00000 0.44994 99.2% - 0s H 0 0 55.0000000 0.44994 99.2% - 0s 0 0 0.52479 0 85 55.00000 0.52479 99.0% - 0s 0 0 0.53287 0 85 55.00000 0.53287 99.0% - 0s 0 0 0.57744 0 86 55.00000 0.57744 99.0% - 0s H 0 0 54.0000000 0.57744 98.9% - 0s 0 0 0.60586 0 86 54.00000 0.60586 98.9% - 0s 0 0 0.61142 0 88 54.00000 0.61142 98.9% - 0s H 0 0 53.0000000 0.61142 98.8% - 0s H 0 0 51.0000000 0.61142 98.8% - 0s H 0 0 42.0000000 0.61142 98.5% - 0s H 0 0 40.0000000 0.61142 98.5% - 0s 0 2 0.70445 0 88 40.00000 0.70445 98.2% - 0s * 31 31 19 39.0000000 4.54545 88.3% 29.6 0s * 71 54 22 38.0000000 4.66667 87.7% 24.5 0s * 168 108 16 37.0000000 11.92308 67.8% 24.0 0s * 576 220 13 36.0000000 18.33898 49.1% 21.9 0s H 637 190 33.0000000 18.91429 42.7% 21.9 0s H 1096 256 32.0000000 21.00000 34.4% 23.6 1s Explored 4250 nodes (94407 simplex iterations) in 3.98 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.200000000000e+01, best bound 3.200000000000e+01, gap 0.0%