current bounds on the number of colors: 0 -- 201 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 09:48:40 2012 Optimize a model with 102701 rows, 21125 columns and 327600 nonzeros Presolve time: 0.33s Presolved: 102701 rows, 21125 columns, 327600 nonzeros Variable types: 0 continuous, 21125 integer (21125 binary) Root relaxation: objective 0.000000e+00, 834 iterations, 0.11 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 (1305 simplex iterations) in 0.60 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 -- 100 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 09:48:42 2012 Optimize a model with 51451 rows, 11075 columns and 163800 nonzeros Presolve time: 0.17s Presolved: 51451 rows, 11075 columns, 163800 nonzeros Variable types: 0 continuous, 11075 integer (11075 binary) Root relaxation: objective 0.000000e+00, 679 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 (1171 simplex iterations) in 0.30 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 -- 50 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 09:48:43 2012 Optimize a model with 25826 rows, 6050 columns and 81900 nonzeros Presolve time: 0.10s Presolved: 25826 rows, 6050 columns, 81900 nonzeros Variable types: 0 continuous, 6050 integer (6050 binary) Root relaxation: objective 0.000000e+00, 481 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 (889 simplex iterations) in 0.15 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 -- 25 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 09:48:44 2012 Optimize a model with 12501 rows, 3437 columns and 39312 nonzeros Presolve time: 0.04s Presolved: 12501 rows, 3437 columns, 39312 nonzeros Variable types: 0 continuous, 3437 integer (3437 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (782 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 -- 12 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 09:48:44 2012 Optimize a model with 6351 rows, 2231 columns and 19656 nonzeros Presolve time: 0.02s Presolved: 6351 rows, 2231 columns, 19656 nonzeros Variable types: 0 continuous, 2231 integer (2231 binary) Root relaxation: objective 0.000000e+00, 429 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 (1566 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 09:48:44 2012 Optimize a model with 3276 rows, 1628 columns and 9828 nonzeros Presolve time: 0.01s Presolved: 3276 rows, 1628 columns, 9828 nonzeros Variable types: 0 continuous, 1628 integer (1628 binary) Root relaxation: objective 0.000000e+00, 458 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 0 332 - 0.00000 - - 0s 0 0 0.00000 0 392 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (7352 simplex iterations) in 0.89 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 09:48:45 2012 Optimize a model with 4301 rows, 1829 columns and 13104 nonzeros Presolve time: 0.01s Presolved: 4301 rows, 1829 columns, 13104 nonzeros Variable types: 0 continuous, 1829 integer (1829 binary) Root relaxation: objective 0.000000e+00, 477 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 0 382 - 0.00000 - - 0s 0 0 0.00000 0 388 - 0.00000 - - 0s 0 0 0.00000 0 378 - 0.00000 - - 1s 0 0 0.00000 0 536 - 0.00000 - - 1s 0 0 0.00000 0 361 - 0.00000 - - 2s 0 0 0.00000 0 350 - 0.00000 - - 2s 0 0 0.00000 0 346 - 0.00000 - - 3s 0 0 0.00000 0 330 - 0.00000 - - 4s 0 0 0.00000 0 337 - 0.00000 - - 4s 0 0 0.00000 0 334 - 0.00000 - - 5s 0 0 0.00000 0 328 - 0.00000 - - 5s 0 0 0.00000 0 328 - 0.00000 - - 6s 0 0 0.00000 0 324 - 0.00000 - - 7s 0 0 0.00000 0 322 - 0.00000 - - 7s 0 0 0.00000 0 316 - 0.00000 - - 8s 0 0 0.00000 0 308 - 0.00000 - - 9s 0 0 0.00000 0 314 - 0.00000 - - 10s 0 0 0.00000 0 314 - 0.00000 - - 10s 0 2 0.00000 0 314 - 0.00000 - - 11s 219 93 0.00000 21 395 - 0.00000 - 180 15s 701 162 0.00000 12 388 - 0.00000 - 147 20s 705 165 0.00000 16 373 - 0.00000 - 146 25s 708 167 0.00000 22 324 - 0.00000 - 146 30s 710 168 0.00000 19 312 - 0.00000 - 145 35s 713 170 0.00000 14 329 - 0.00000 - 145 41s 715 171 0.00000 12 474 - 0.00000 - 144 46s 770 190 0.00000 24 473 - 0.00000 - 249 50s 1027 107 infeasible 33 - 0.00000 - 242 55s 1263 34 0.00000 30 367 - 0.00000 - 244 60s 1530 45 infeasible 28 - 0.00000 - 241 65s 1733 26 infeasible 26 - 0.00000 - 246 70s 1925 80 0.00000 29 366 - 0.00000 - 249 75s 2071 96 0.00000 25 366 - 0.00000 - 256 80s 2295 100 infeasible 31 - 0.00000 - 256 85s 2486 91 0.00000 25 457 - 0.00000 - 258 90s 2682 97 infeasible 34 - 0.00000 - 259 95s 2862 97 infeasible 25 - 0.00000 - 262 100s 3058 97 0.00000 30 362 - 0.00000 - 263 105s 3246 125 0.00000 27 373 - 0.00000 - 264 110s 3426 107 infeasible 25 - 0.00000 - 267 115s 3631 116 infeasible 32 - 0.00000 - 266 120s 3846 127 infeasible 27 - 0.00000 - 265 125s 4028 115 0.00000 24 430 - 0.00000 - 267 130s 4202 95 0.00000 22 468 - 0.00000 - 269 135s 4363 78 infeasible 23 - 0.00000 - 271 140s 4558 81 0.00000 29 352 - 0.00000 - 271 145s 4748 65 infeasible 25 - 0.00000 - 272 150s 4918 55 infeasible 35 - 0.00000 - 273 155s 5117 68 infeasible 29 - 0.00000 - 273 160s 5311 68 0.00000 25 462 - 0.00000 - 273 165s 5472 51 infeasible 26 - 0.00000 - 274 170s 5642 41 infeasible 25 - 0.00000 - 275 175s 5835 42 infeasible 37 - 0.00000 - 275 180s 5982 31 infeasible 32 - 0.00000 - 276 185s 6160 29 infeasible 31 - 0.00000 - 276 190s 6360 19 infeasible 29 - 0.00000 - 276 195s 6597 22 infeasible 35 - 0.00000 - 275 200s 6860 19 0.00000 27 362 - 0.00000 - 274 205s 7062 15 infeasible 26 - 0.00000 - 274 210s 7230 17 infeasible 25 - 0.00000 - 275 215s 7412 19 infeasible 30 - 0.00000 - 275 220s 7614 7 infeasible 27 - 0.00000 - 275 225s 7804 7 infeasible 24 - 0.00000 - 275 230s 7979 4 infeasible 26 - 0.00000 - 275 235s 8186 17 infeasible 29 - 0.00000 - 275 240s 8360 13 infeasible 29 - 0.00000 - 275 245s 8539 4 infeasible 26 - 0.00000 - 275 250s 8726 11 infeasible 32 - 0.00000 - 275 255s 8919 8 0.00000 23 356 - 0.00000 - 275 260s 9118 5 0.00000 22 366 - 0.00000 - 275 265s Cutting planes: Gomory: 2 Clique: 1 Zero half: 21 Explored 9176 nodes (2597156 simplex iterations) in 266.39 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - current bounds on the number of colors: 4 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 09:53:12 2012 Optimize a model with 5326 rows, 2030 columns and 16380 nonzeros Presolve time: 0.01s Presolved: 5326 rows, 2030 columns, 16380 nonzeros Variable types: 0 continuous, 2030 integer (2030 binary) Root relaxation: objective 0.000000e+00, 429 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 0 382 - 0.00000 - - 0s * 0 0 0 0.0000000 0.00000 0.0% - 0s Cutting planes: Gomory: 2 Clique: 158 MIR: 1 Zero half: 479 Explored 0 nodes (7360 simplex iterations) in 0.79 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% optimal solution found: number of colors: 5