current bounds on the number of colors: 0 -- 125 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 22:30:34 2012 Optimize a model with 48919 rows, 8537 columns and 154132 nonzeros Presolve time: 0.16s Presolved: 48919 rows, 8537 columns, 154132 nonzeros Variable types: 0 continuous, 8537 integer (8537 binary) Root relaxation: objective 0.000000e+00, 298 iterations, 0.06 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (584 simplex iterations) in 0.28 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 62 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 22:30:35 2012 Optimize a model with 24522 rows, 4662 columns and 77066 nonzeros Presolve time: 0.11s Presolved: 24522 rows, 4662 columns, 77066 nonzeros Variable types: 0 continuous, 4662 integer (4662 binary) Root relaxation: objective 0.000000e+00, 302 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (573 simplex iterations) in 0.17 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 31 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 22:30:35 2012 Optimize a model with 11930 rows, 2662 columns and 37290 nonzeros Presolve time: 0.04s Presolved: 11930 rows, 2662 columns, 37290 nonzeros Variable types: 0 continuous, 2662 integer (2662 binary) Root relaxation: objective 0.000000e+00, 257 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (497 simplex iterations) in 0.06 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 15 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 22:30:36 2012 Optimize a model with 5634 rows, 1662 columns and 17402 nonzeros Presolve time: 0.02s Presolved: 5634 rows, 1662 columns, 17402 nonzeros Variable types: 0 continuous, 1662 integer (1662 binary) Root relaxation: objective 0.000000e+00, 266 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1417 simplex iterations) in 0.07 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 7 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 22:30:36 2012 Optimize a model with 2486 rows, 1162 columns and 7458 nonzeros Presolve time: 0.01s Presolved: 2486 rows, 1162 columns, 7458 nonzeros Variable types: 0 continuous, 1162 integer (1162 binary) Root relaxation: objective 0.000000e+00, 282 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 198 - 0.00000 - - 0s 0 0 0.00000 0 250 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3995 simplex iterations) in 0.49 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound 1.000000000000e+00, gap - current bounds on the number of colors: 3 -- 7 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 22:30:36 2012 Optimize a model with 4060 rows, 1412 columns and 12430 nonzeros Presolve time: 0.01s Presolved: 4060 rows, 1412 columns, 12430 nonzeros Variable types: 0 continuous, 1412 integer (1412 binary) Root relaxation: objective 0.000000e+00, 274 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 0 236 - 0.00000 - - 0s 0 0 0.00000 0 222 - 0.00000 - - 0s 0 0 0.00000 0 255 - 0.00000 - - 0s 0 0 0.00000 0 339 - 0.00000 - - 1s 0 0 0.00000 0 278 - 0.00000 - - 1s 0 0 0.00000 0 320 - 0.00000 - - 2s 0 0 0.00000 0 298 - 0.00000 - - 2s 0 0 0.00000 0 324 - 0.00000 - - 2s 0 0 0.00000 0 324 - 0.00000 - - 3s 0 2 0.00000 0 324 - 0.00000 - - 3s 219 41 0.00000 17 208 - 0.00000 - 97.8 5s 805 71 0.00000 7 262 - 0.00000 - 90.5 10s 810 74 0.00000 17 275 - 0.00000 - 89.9 16s 830 85 0.00000 22 293 - 0.00000 - 133 20s 1244 46 infeasible 34 - 0.00000 - 150 25s 1651 67 infeasible 32 - 0.00000 - 159 30s 2016 92 0.00000 33 281 - 0.00000 - 167 35s 2399 91 infeasible 37 - 0.00000 - 173 40s 2770 78 infeasible 30 - 0.00000 - 177 45s 3110 92 0.00000 26 244 - 0.00000 - 181 50s 3466 88 infeasible 33 - 0.00000 - 185 55s 3877 111 0.00000 32 198 - 0.00000 - 186 60s 4348 102 0.00000 35 204 - 0.00000 - 185 65s 4711 101 infeasible 38 - 0.00000 - 187 70s 5047 107 0.00000 33 286 - 0.00000 - 189 75s 5339 99 0.00000 30 262 - 0.00000 - 193 80s 5723 103 0.00000 31 250 - 0.00000 - 193 85s * 5963 2 39 0.0000000 0.00000 0.0% 193 87s Cutting planes: Clique: 4 Zero half: 12 Explored 5964 nodes (1173667 simplex iterations) in 87.89 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 3 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 22:32:04 2012 Optimize a model with 3273 rows, 1287 columns and 9944 nonzeros Presolve time: 0.01s Presolved: 3273 rows, 1287 columns, 9944 nonzeros Variable types: 0 continuous, 1287 integer (1287 binary) Root relaxation: objective 0.000000e+00, 284 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 246 - 0.00000 - - 0s 0 0 0.00000 0 236 - 0.00000 - - 0s 0 0 0.00000 0 274 - 0.00000 - - 1s 0 0 0.00000 0 392 - 0.00000 - - 1s 0 0 0.00000 0 368 - 0.00000 - - 2s 0 0 0.00000 0 364 - 0.00000 - - 2s 0 0 0.00000 0 355 - 0.00000 - - 3s 0 0 0.00000 0 354 - 0.00000 - - 4s 0 0 0.00000 0 358 - 0.00000 - - 4s 0 0 0.00000 0 367 - 0.00000 - - 5s 0 0 0.00000 0 371 - 0.00000 - - 6s 0 0 0.00000 0 371 - 0.00000 - - 6s 0 2 0.00000 0 371 - 0.00000 - - 7s Cutting planes: Clique: 11 Zero half: 31 Explored 9 nodes (37694 simplex iterations) in 7.55 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - optimal solution found: number of colors: 5