Gurobi 5.0.1 (linux64) logging started Sun Nov 18 00:47:17 2012 Optimize a model with 315 rows, 210 columns and 995 nonzeros Presolve time: 0.00s Presolved: 315 rows, 210 columns, 995 nonzeros Variable types: 0 continuous, 210 integer (210 binary) Found heuristic solution: objective 62.0000000 Root relaxation: objective 0.000000e+00, 101 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 53 62.00000 0.00000 100% - 0s H 0 0 59.0000000 0.00000 100% - 0s 0 0 0.84699 0 56 59.00000 0.84699 98.6% - 0s H 0 0 57.0000000 0.84699 98.5% - 0s 0 0 0.84699 0 56 57.00000 0.84699 98.5% - 0s 0 0 0.88416 0 58 57.00000 0.88416 98.4% - 0s 0 0 0.89908 0 60 57.00000 0.89908 98.4% - 0s 0 0 0.91037 0 59 57.00000 0.91037 98.4% - 0s 0 0 0.92624 0 55 57.00000 0.92624 98.4% - 0s 0 0 0.92624 0 55 57.00000 0.92624 98.4% - 0s 0 0 0.92624 0 55 57.00000 0.92624 98.4% - 0s H 0 0 54.0000000 0.92624 98.3% - 0s 0 2 1.01132 0 55 54.00000 1.01132 98.1% - 0s H 32 32 50.0000000 4.21212 91.6% 27.8 0s * 42 34 23 48.0000000 4.21212 91.2% 23.2 0s * 206 146 20 45.0000000 11.05882 75.4% 20.2 0s * 328 170 15 44.0000000 13.50000 69.3% 19.2 0s * 385 181 14 42.0000000 16.18605 61.5% 19.0 0s * 935 280 27 41.0000000 19.73333 51.9% 21.6 0s * 1075 243 24 40.0000000 21.03846 47.4% 21.8 0s * 2043 243 23 39.0000000 28.20000 27.7% 21.6 1s Explored 3456 nodes (71497 simplex iterations) in 2.65 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.900000000000e+01, best bound 3.900000000000e+01, gap 0.0%