current bounds on the number of colors: 0 -- 182 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 01:52:26 2012 Optimize a model with 75894 rows, 17394 columns and 243698 nonzeros Presolve time: 0.24s Presolved: 75894 rows, 17394 columns, 243698 nonzeros Variable types: 0 continuous, 17394 integer (17394 binary) Root relaxation: objective 0.000000e+00, 751 iterations, 0.07 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 (1206 simplex iterations) in 0.43 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 -- 91 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 01:52:27 2012 Optimize a model with 37622 rows, 9022 columns and 120510 nonzeros Presolve time: 0.15s Presolved: 37622 rows, 9022 columns, 120510 nonzeros Variable types: 0 continuous, 9022 integer (9022 binary) Root relaxation: objective 0.000000e+00, 624 iterations, 0.04 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 (1020 simplex iterations) in 0.24 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 -- 45 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 01:52:28 2012 Optimize a model with 18486 rows, 4836 columns and 58916 nonzeros Presolve time: 0.07s Presolved: 18486 rows, 4836 columns, 58916 nonzeros Variable types: 0 continuous, 4836 integer (4836 binary) Root relaxation: objective 0.000000e+00, 381 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 (720 simplex iterations) in 0.11 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 -- 22 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 01:52:28 2012 Optimize a model with 9334 rows, 2834 columns and 29458 nonzeros Presolve time: 0.03s Presolved: 9334 rows, 2834 columns, 29458 nonzeros Variable types: 0 continuous, 2834 integer (2834 binary) Root relaxation: objective 0.000000e+00, 379 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 (714 simplex iterations) in 0.05 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 -- 11 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 01:52:28 2012 Optimize a model with 4342 rows, 1742 columns and 13390 nonzeros Presolve time: 0.01s Presolved: 4342 rows, 1742 columns, 13390 nonzeros Variable types: 0 continuous, 1742 integer (1742 binary) Root relaxation: objective 0.000000e+00, 398 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 (1699 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 Sat Dec 15 01:52:28 2012 Optimize a model with 1846 rows, 1196 columns and 5356 nonzeros Presolve removed 182 rows and 182 columns Presolve time: 0.00s Presolved: 1664 rows, 1014 columns, 4992 nonzeros Variable types: 0 continuous, 1014 integer (1014 binary) Root relaxation: objective 0.000000e+00, 193 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 0 182 - 0.00000 - - 0s Explored 0 nodes (781 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 Sat Dec 15 01:52:28 2012 Optimize a model with 2678 rows, 1378 columns and 8034 nonzeros Presolve time: 0.01s Presolved: 2678 rows, 1378 columns, 8034 nonzeros Variable types: 0 continuous, 1378 integer (1378 binary) Root relaxation: objective 0.000000e+00, 412 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 0 358 - 0.00000 - - 0s 0 0 0.00000 0 360 - 0.00000 - - 0s 0 0 0.00000 0 499 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Cutting planes: Gomory: 32 Clique: 1 Zero half: 538 Explored 0 nodes (7442 simplex iterations) in 0.92 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 Sat Dec 15 01:52:29 2012 Optimize a model with 3510 rows, 1560 columns and 10712 nonzeros Presolve time: 0.01s Presolved: 3510 rows, 1560 columns, 10712 nonzeros Variable types: 0 continuous, 1560 integer (1560 binary) Root relaxation: objective 0.000000e+00, 409 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 0 356 - 0.00000 - - 0s 0 0 0.00000 0 352 - 0.00000 - - 0s 0 0 0.00000 0 322 - 0.00000 - - 0s 0 0 0.00000 0 379 - 0.00000 - - 0s 0 0 0.00000 0 325 - 0.00000 - - 1s 0 0 0.00000 0 296 - 0.00000 - - 1s 0 0 0.00000 0 313 - 0.00000 - - 2s 0 0 0.00000 0 333 - 0.00000 - - 2s 0 0 0.00000 0 280 - 0.00000 - - 2s 0 0 0.00000 0 293 - 0.00000 - - 3s 0 0 0.00000 0 278 - 0.00000 - - 3s 0 0 0.00000 0 432 - 0.00000 - - 4s 0 0 0.00000 0 432 - 0.00000 - - 4s 0 2 0.00000 0 432 - 0.00000 - - 4s 8 8 0.00000 7 323 - 0.00000 - 318 5s 606 68 0.00000 22 308 - 0.00000 - 91.3 10s 610 71 0.00000 19 276 - 0.00000 - 90.7 15s 614 74 0.00000 23 294 - 0.00000 - 90.1 20s 861 111 0.00000 30 356 - 0.00000 - 176 25s 1233 175 infeasible 35 - 0.00000 - 186 30s 1629 243 0.00000 33 380 - 0.00000 - 189 35s 2012 274 infeasible 37 - 0.00000 - 191 40s 2428 284 0.00000 27 310 - 0.00000 - 192 45s 2821 301 infeasible 31 - 0.00000 - 193 50s 3173 311 0.00000 28 332 - 0.00000 - 196 55s 3504 260 infeasible 33 - 0.00000 - 200 60s 3816 266 infeasible 29 - 0.00000 - 203 65s 4212 250 infeasible 30 - 0.00000 - 203 70s 4540 212 0.00000 32 403 - 0.00000 - 205 75s 4893 179 0.00000 30 320 - 0.00000 - 206 80s 5246 204 infeasible 31 - 0.00000 - 207 85s 5650 222 infeasible 33 - 0.00000 - 206 90s 6016 190 0.00000 27 358 - 0.00000 - 207 95s 6383 179 infeasible 28 - 0.00000 - 207 100s 6764 198 infeasible 27 - 0.00000 - 207 105s 7170 188 infeasible 28 - 0.00000 - 207 110s 7568 176 0.00000 25 306 - 0.00000 - 206 115s 7987 179 infeasible 32 - 0.00000 - 205 120s 8341 165 0.00000 27 306 - 0.00000 - 206 125s 8659 149 infeasible 29 - 0.00000 - 207 130s 9066 152 0.00000 27 342 - 0.00000 - 206 135s 9422 140 infeasible 27 - 0.00000 - 207 140s 9845 151 0.00000 30 382 - 0.00000 - 206 145s 10313 139 infeasible 25 - 0.00000 - 205 150s 10687 133 infeasible 27 - 0.00000 - 205 155s 10995 113 infeasible 34 - 0.00000 - 206 160s 11349 99 0.00000 27 337 - 0.00000 - 206 165s 11640 72 infeasible 29 - 0.00000 - 208 170s 12015 67 infeasible 31 - 0.00000 - 208 175s 12390 52 infeasible 35 - 0.00000 - 208 180s 12771 39 0.00000 30 308 - 0.00000 - 208 185s 13130 26 0.00000 33 400 - 0.00000 - 208 190s 13460 14 0.00000 29 361 - 0.00000 - 208 195s Cutting planes: Zero half: 16 Explored 13739 nodes (2911181 simplex iterations) in 199.72 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