current bounds on the number of colors: 0 -- 173 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 22:02:59 2012 Optimize a model with 63899 rows, 15619 columns and 206056 nonzeros Presolve time: 0.20s Presolved: 63899 rows, 15619 columns, 206056 nonzeros Variable types: 0 continuous, 15619 integer (15619 binary) Root relaxation: objective 0.000000e+00, 683 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 (1073 simplex iterations) in 0.35 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 -- 86 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 22:03:01 2012 Optimize a model with 32036 rows, 8180 columns and 103028 nonzeros Presolve time: 0.14s Presolved: 32036 rows, 8180 columns, 103028 nonzeros Variable types: 0 continuous, 8180 integer (8180 binary) Root relaxation: objective 0.000000e+00, 456 iterations, 0.02 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 (801 simplex iterations) in 0.20 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 -- 43 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 22:03:01 2012 Optimize a model with 15734 rows, 4374 columns and 50316 nonzeros Presolve time: 0.06s Presolved: 15734 rows, 4374 columns, 50316 nonzeros Variable types: 0 continuous, 4374 integer (4374 binary) Root relaxation: objective 0.000000e+00, 348 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 (674 simplex iterations) in 0.09 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 -- 21 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 22:03:01 2012 Optimize a model with 7583 rows, 2471 columns and 23960 nonzeros Presolve time: 0.02s Presolved: 7583 rows, 2471 columns, 23960 nonzeros Variable types: 0 continuous, 2471 integer (2471 binary) Root relaxation: objective 0.000000e+00, 366 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 (697 simplex iterations) in 0.04 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 -- 10 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 22:03:02 2012 Optimize a model with 3878 rows, 1606 columns and 11980 nonzeros Presolve time: 0.01s Presolved: 3878 rows, 1606 columns, 11980 nonzeros Variable types: 0 continuous, 1606 integer (1606 binary) Root relaxation: objective 0.000000e+00, 383 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 0 150 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (2310 simplex iterations) in 0.09 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 -- 5 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 22:03:02 2012 Optimize a model with 1655 rows, 1087 columns and 4792 nonzeros Presolve removed 173 rows and 173 columns Presolve time: 0.00s Presolved: 1482 rows, 914 columns, 4446 nonzeros Variable types: 0 continuous, 914 integer (914 binary) Root relaxation: objective 0.000000e+00, 181 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 0 173 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (744 simplex iterations) in 0.02 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: 2 -- 5 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 22:03:02 2012 Optimize a model with 2396 rows, 1260 columns and 7188 nonzeros Presolve time: 0.01s Presolved: 2396 rows, 1260 columns, 7188 nonzeros Variable types: 0 continuous, 1260 integer (1260 binary) Root relaxation: objective 0.000000e+00, 423 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 0 340 - 0.00000 - - 0s 0 0 0.00000 0 338 - 0.00000 - - 0s 0 0 0.00000 0 439 - 0.00000 - - 0s 0 0 0.00000 0 475 - 0.00000 - - 0s 0 0 0.00000 0 437 - 0.00000 - - 1s 0 0 0.00000 0 449 - 0.00000 - - 1s 0 0 0.00000 0 438 - 0.00000 - - 2s 0 0 infeasible 0 - 0.10000 - - 2s Cutting planes: Zero half: 804 Explored 0 nodes (16384 simplex iterations) in 2.54 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 -- 5 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 22:03:04 2012 Optimize a model with 3137 rows, 1433 columns and 9584 nonzeros Presolve time: 0.01s Presolved: 3137 rows, 1433 columns, 9584 nonzeros Variable types: 0 continuous, 1433 integer (1433 binary) Root relaxation: objective 0.000000e+00, 380 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 0 340 - 0.00000 - - 0s 0 0 0.00000 0 330 - 0.00000 - - 0s 0 0 0.00000 0 328 - 0.00000 - - 0s 0 0 0.00000 0 363 - 0.00000 - - 0s 0 0 0.00000 0 322 - 0.00000 - - 0s 0 0 0.00000 0 325 - 0.00000 - - 1s 0 0 0.00000 0 310 - 0.00000 - - 1s 0 0 0.00000 0 304 - 0.00000 - - 1s 0 0 0.00000 0 304 - 0.00000 - - 1s 0 0 0.00000 0 300 - 0.00000 - - 2s 0 0 0.00000 0 310 - 0.00000 - - 2s 0 0 0.00000 0 298 - 0.00000 - - 2s 0 0 0.00000 0 294 - 0.00000 - - 2s 0 0 0.00000 0 280 - 0.00000 - - 3s 0 0 0.00000 0 282 - 0.00000 - - 3s 0 0 0.00000 0 282 - 0.00000 - - 3s 0 2 0.00000 0 280 - 0.00000 - - 3s 345 30 infeasible 18 - 0.00000 - 81.5 5s 807 47 0.00000 4 385 - 0.00000 - 87.9 10s 812 50 0.00000 4 353 - 0.00000 - 87.4 15s 912 53 0.00000 19 366 - 0.00000 - 136 20s 1413 123 infeasible 28 - 0.00000 - 147 25s 1895 188 0.00000 29 272 - 0.00000 - 155 30s 2380 201 0.00000 26 294 - 0.00000 - 160 35s 2874 195 infeasible 29 - 0.00000 - 163 40s 3387 200 0.00000 24 278 - 0.00000 - 164 45s 3850 175 0.00000 24 372 - 0.00000 - 167 50s 4291 168 infeasible 31 - 0.00000 - 170 55s 4735 174 0.00000 27 358 - 0.00000 - 172 60s 5200 163 infeasible 27 - 0.00000 - 173 65s 5631 188 0.00000 26 380 - 0.00000 - 175 70s 6039 192 infeasible 28 - 0.00000 - 176 75s 6478 189 0.00000 26 374 - 0.00000 - 178 80s 6891 178 infeasible 24 - 0.00000 - 179 85s 7277 206 0.00000 25 270 - 0.00000 - 180 90s 7670 227 0.00000 24 327 - 0.00000 - 181 95s 8097 214 infeasible 26 - 0.00000 - 182 100s 8525 222 infeasible 25 - 0.00000 - 183 105s 9055 220 infeasible 24 - 0.00000 - 182 110s 9547 238 0.00000 21 361 - 0.00000 - 182 115s 9973 228 infeasible 25 - 0.00000 - 183 120s 10381 220 0.00000 27 315 - 0.00000 - 184 125s 10795 212 0.00000 25 284 - 0.00000 - 184 130s 11302 199 0.00000 21 356 - 0.00000 - 184 135s 11751 180 infeasible 27 - 0.00000 - 184 140s 12167 166 0.00000 27 339 - 0.00000 - 185 145s 12594 163 0.00000 29 337 - 0.00000 - 185 150s 12980 153 infeasible 23 - 0.00000 - 186 155s 13410 131 0.00000 24 304 - 0.00000 - 186 160s 13851 118 infeasible 30 - 0.00000 - 186 165s 14286 97 0.00000 22 325 - 0.00000 - 186 170s 14721 92 infeasible 28 - 0.00000 - 187 175s 15208 95 infeasible 32 - 0.00000 - 187 180s 15644 77 infeasible 26 - 0.00000 - 187 185s 16014 59 0.00000 25 276 - 0.00000 - 187 190s 16368 52 0.00000 23 300 - 0.00000 - 188 195s 16726 50 infeasible 27 - 0.00000 - 189 200s 17100 40 0.00000 30 334 - 0.00000 - 189 205s 17482 8 0.00000 22 392 - 0.00000 - 190 210s Cutting planes: Gomory: 1 Zero half: 19 Explored 17665 nodes (3397372 simplex iterations) in 212.73 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