Gurobi 5.0.1 (linux64) logging started Tue Nov 20 15:18:11 2012 Optimize a model with 961 rows, 194 columns and 1922 nonzeros Presolve removed 226 rows and 0 columns Presolve time: 0.01s Presolved: 735 rows, 194 columns, 1624 nonzeros Variable types: 0 continuous, 194 integer (194 binary) Found heuristic solution: objective 53.0000000 Root relaxation: objective 7.577778e+01, 473 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 75.77778 0 176 53.00000 75.77778 43.0% - 0s 0 0 74.75846 0 192 53.00000 74.75846 41.1% - 0s H 0 0 56.0000000 74.75846 33.5% - 0s 0 0 74.02366 0 191 56.00000 74.02366 32.2% - 0s 0 0 73.20077 0 193 56.00000 73.20077 30.7% - 0s 0 0 72.63501 0 193 56.00000 72.63501 29.7% - 0s 0 0 72.20151 0 193 56.00000 72.20151 28.9% - 0s 0 0 72.01440 0 194 56.00000 72.01440 28.6% - 0s 0 0 71.87304 0 194 56.00000 71.87304 28.3% - 0s H 0 0 57.0000000 71.87304 26.1% - 0s 0 0 71.75843 0 193 57.00000 71.75843 25.9% - 0s 0 0 71.60349 0 192 57.00000 71.60349 25.6% - 0s 0 0 71.48158 0 194 57.00000 71.48158 25.4% - 0s 0 0 71.41729 0 194 57.00000 71.41729 25.3% - 0s 0 0 71.40051 0 194 57.00000 71.40051 25.3% - 0s 0 0 71.40051 0 193 57.00000 71.40051 25.3% - 0s 0 2 71.39742 0 193 57.00000 71.39742 25.3% - 0s * 78 57 12 58.0000000 70.81005 22.1% 68.9 0s * 131 76 17 59.0000000 70.35672 19.2% 64.1 0s 608 334 67.72535 9 192 59.00000 68.56232 16.2% 53.2 5s 1276 598 62.90278 31 140 59.00000 68.56232 16.2% 58.7 10s 3370 1803 66.00000 29 126 59.00000 67.00000 13.6% 45.9 15s 6355 3388 cutoff 41 59.00000 66.06931 12.0% 40.3 20s 9823 5012 cutoff 45 59.00000 65.42308 10.9% 37.4 25s 13289 6442 62.00000 23 122 59.00000 65.00000 10.2% 35.7 30s 17877 8165 63.16525 28 145 59.00000 64.54741 9.40% 34.1 35s H21337 5012 61.0000000 64.28767 5.39% 33.2 38s 21339 5010 63.17333 24 141 61.00000 64.28571 5.39% 33.2 40s 25293 4386 cutoff 25 61.00000 63.60937 4.28% 33.0 45s 29955 2300 62.25000 29 94 61.00000 62.71503 2.81% 32.4 50s Cutting planes: Gomory: 4 Clique: 1 Zero half: 70 Explored 32696 nodes (1015446 simplex iterations) in 51.66 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%