current bounds on the number of colors: 0 -- 179 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 00:29:55 2012 Optimize a model with 70311 rows, 16719 columns and 226327 nonzeros Presolve time: 0.22s Presolved: 70311 rows, 16719 columns, 226327 nonzeros Variable types: 0 continuous, 16719 integer (16719 binary) Root relaxation: objective 0.000000e+00, 620 iterations, 0.05 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 (1040 simplex iterations) in 0.38 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 -- 89 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 00:29:57 2012 Optimize a model with 34851 rows, 8664 columns and 111892 nonzeros Presolve time: 0.15s Presolved: 34851 rows, 8664 columns, 111892 nonzeros Variable types: 0 continuous, 8664 integer (8664 binary) Root relaxation: objective 0.000000e+00, 465 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 (822 simplex iterations) in 0.21 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 -- 44 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 00:29:57 2012 Optimize a model with 17515 rows, 4726 columns and 55946 nonzeros Presolve time: 0.07s Presolved: 17515 rows, 4726 columns, 55946 nonzeros Variable types: 0 continuous, 4726 integer (4726 binary) Root relaxation: objective 0.000000e+00, 404 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 (725 simplex iterations) in 0.10 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 00:29:58 2012 Optimize a model with 8847 rows, 2757 columns and 27973 nonzeros Presolve time: 0.03s Presolved: 8847 rows, 2757 columns, 27973 nonzeros Variable types: 0 continuous, 2757 integer (2757 binary) Root relaxation: objective 0.000000e+00, 377 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 0.05 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 00:29:58 2012 Optimize a model with 4119 rows, 1683 columns and 12715 nonzeros Presolve time: 0.01s Presolved: 4119 rows, 1683 columns, 12715 nonzeros Variable types: 0 continuous, 1683 integer (1683 binary) Root relaxation: objective 0.000000e+00, 404 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 37 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (2312 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 00:29:58 2012 Optimize a model with 1755 rows, 1146 columns and 5086 nonzeros Presolve removed 179 rows and 179 columns Presolve time: 0.00s Presolved: 1576 rows, 967 columns, 4728 nonzeros Variable types: 0 continuous, 967 integer (967 binary) Root relaxation: objective 0.000000e+00, 192 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 0 179 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (780 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 00:29:58 2012 Optimize a model with 2543 rows, 1325 columns and 7629 nonzeros Presolve time: 0.01s Presolved: 2543 rows, 1325 columns, 7629 nonzeros Variable types: 0 continuous, 1325 integer (1325 binary) Root relaxation: objective 0.000000e+00, 420 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 0 356 - 0.00000 - - 0s 0 0 0.00000 0 491 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Cutting planes: Gomory: 27 Zero half: 468 Explored 0 nodes (6580 simplex iterations) in 0.83 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 00:29:59 2012 Optimize a model with 3331 rows, 1504 columns and 10172 nonzeros Presolve time: 0.01s Presolved: 3331 rows, 1504 columns, 10172 nonzeros Variable types: 0 continuous, 1504 integer (1504 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 0 338 - 0.00000 - - 0s 0 0 0.00000 0 342 - 0.00000 - - 0s 0 0 0.00000 0 336 - 0.00000 - - 0s 0 0 0.00000 0 334 - 0.00000 - - 0s 0 0 0.00000 0 387 - 0.00000 - - 0s 0 0 0.00000 0 412 - 0.00000 - - 1s 0 0 0.00000 0 465 - 0.00000 - - 1s 0 0 0.00000 0 457 - 0.00000 - - 2s 0 2 0.00000 0 457 - 0.00000 - - 2s 530 112 0.00000 24 264 - 0.00000 - 95.6 5s 609 139 0.00000 12 252 - 0.00000 - 92.4 10s 643 158 infeasible 25 - 0.00000 - 154 15s 1050 80 infeasible 31 - 0.00000 - 172 20s 1483 83 infeasible 25 - 0.00000 - 180 25s 1931 103 infeasible 31 - 0.00000 - 183 30s 2380 90 infeasible 27 - 0.00000 - 186 35s 2828 72 infeasible 27 - 0.00000 - 187 40s 3216 56 0.00000 27 300 - 0.00000 - 191 45s 3638 54 0.00000 28 353 - 0.00000 - 192 50s 4036 108 infeasible 34 - 0.00000 - 194 55s 4446 128 infeasible 35 - 0.00000 - 195 60s 4852 166 0.00000 26 300 - 0.00000 - 196 65s 5260 182 0.00000 35 286 - 0.00000 - 196 70s 5651 171 0.00000 25 284 - 0.00000 - 197 75s 6100 234 0.00000 33 367 - 0.00000 - 197 80s 6549 215 infeasible 30 - 0.00000 - 196 85s 6991 207 infeasible 34 - 0.00000 - 196 90s 7458 232 0.00000 32 290 - 0.00000 - 195 95s 7894 242 infeasible 25 - 0.00000 - 195 100s 8330 262 0.00000 29 284 - 0.00000 - 195 105s 8750 272 0.00000 27 300 - 0.00000 - 195 110s 9141 269 infeasible 25 - 0.00000 - 196 115s 9588 360 0.00000 29 358 - 0.00000 - 196 120s 9986 354 0.00000 28 319 - 0.00000 - 196 125s 10420 330 infeasible 32 - 0.00000 - 196 130s 10865 331 infeasible 30 - 0.00000 - 196 135s 11265 303 0.00000 28 286 - 0.00000 - 197 140s 11612 292 infeasible 25 - 0.00000 - 198 145s 12013 299 0.00000 29 298 - 0.00000 - 198 150s 12423 345 0.00000 27 296 - 0.00000 - 198 155s 12839 345 0.00000 22 286 - 0.00000 - 198 160s 13243 365 infeasible 29 - 0.00000 - 198 165s 13669 367 infeasible 32 - 0.00000 - 199 170s 14138 410 0.00000 30 268 - 0.00000 - 198 175s 14550 390 0.00000 34 303 - 0.00000 - 198 180s 14896 392 infeasible 29 - 0.00000 - 199 185s 15284 390 infeasible 28 - 0.00000 - 199 190s 15734 416 infeasible 26 - 0.00000 - 199 195s 16164 434 infeasible 29 - 0.00000 - 199 200s 16573 441 infeasible 30 - 0.00000 - 199 205s 16947 439 0.00000 31 320 - 0.00000 - 199 210s 17343 443 infeasible 29 - 0.00000 - 200 215s 17697 425 infeasible 34 - 0.00000 - 200 220s 18121 415 infeasible 28 - 0.00000 - 200 225s 18563 403 infeasible 32 - 0.00000 - 200 230s 18970 408 0.00000 27 294 - 0.00000 - 200 235s 19370 420 infeasible 28 - 0.00000 - 200 240s 19752 396 infeasible 36 - 0.00000 - 200 245s 20131 379 infeasible 29 - 0.00000 - 201 250s 20548 378 infeasible 28 - 0.00000 - 201 255s 20956 366 infeasible 30 - 0.00000 - 201 260s 21422 408 infeasible 26 - 0.00000 - 200 265s 21889 405 0.00000 32 296 - 0.00000 - 200 270s 22354 400 0.00000 32 308 - 0.00000 - 200 275s 22793 405 0.00000 29 284 - 0.00000 - 200 280s 23255 411 infeasible 28 - 0.00000 - 199 285s 23726 406 0.00000 25 294 - 0.00000 - 199 290s 24157 425 0.00000 28 284 - 0.00000 - 199 295s Cutting planes: Gomory: 1 Clique: 2 Zero half: 21 Explored 24158 nodes (4828738 simplex iterations) in 295.00 seconds Thread count was 1 (of 16 available processors) Time limit reached Best objective -, best bound 0.000000000000e+00, gap - optimal solution found: number of colors: 5