current bounds on the number of colors: 0 -- 205 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 11:13:27 2012 Optimize a model with 105061 rows, 21938 columns and 335478 nonzeros Presolve time: 0.35s Presolved: 105061 rows, 21938 columns, 335478 nonzeros Variable types: 0 continuous, 21938 integer (21938 binary) Root relaxation: objective 0.000000e+00, 669 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 (1105 simplex iterations) in 0.56 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 -- 102 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 11:13:29 2012 Optimize a model with 52633 rows, 11483 columns and 167739 nonzeros Presolve time: 0.16s Presolved: 52633 rows, 11483 columns, 167739 nonzeros Variable types: 0 continuous, 11483 integer (11483 binary) Root relaxation: objective 0.000000e+00, 719 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 (1205 simplex iterations) in 0.29 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 -- 51 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 11:13:30 2012 Optimize a model with 25905 rows, 6153 columns and 82225 nonzeros Presolve time: 0.11s Presolved: 25905 rows, 6153 columns, 82225 nonzeros Variable types: 0 continuous, 6153 integer (6153 binary) Root relaxation: objective 0.000000e+00, 445 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 (843 simplex iterations) in 0.16 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 11:13:30 2012 Optimize a model with 12541 rows, 3488 columns and 39468 nonzeros Presolve time: 0.04s Presolved: 12541 rows, 3488 columns, 39468 nonzeros Variable types: 0 continuous, 3488 integer (3488 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 (791 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 11:13:30 2012 Optimize a model with 6373 rows, 2258 columns and 19734 nonzeros Presolve time: 0.02s Presolved: 6373 rows, 2258 columns, 19734 nonzeros Variable types: 0 continuous, 2258 integer (2258 binary) Root relaxation: objective 0.000000e+00, 448 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 6 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (2344 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 11:13:30 2012 Optimize a model with 3289 rows, 1643 columns and 9867 nonzeros Presolve time: 0.01s Presolved: 3289 rows, 1643 columns, 9867 nonzeros Variable types: 0 continuous, 1643 integer (1643 binary) Root relaxation: objective 0.000000e+00, 466 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 0 408 - 0.00000 - - 0s 0 0 0.00000 0 406 - 0.00000 - - 0s 0 0 0.00000 0 572 - 0.00000 - - 1s 0 0 infeasible 0 - 0.10000 - - 1s Cutting planes: Gomory: 22 Zero half: 659 Explored 0 nodes (8929 simplex iterations) in 1.46 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 11:13:32 2012 Optimize a model with 4317 rows, 1848 columns and 13156 nonzeros Presolve time: 0.01s Presolved: 4317 rows, 1848 columns, 13156 nonzeros Variable types: 0 continuous, 1848 integer (1848 binary) Root relaxation: objective 0.000000e+00, 430 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 0 396 - 0.00000 - - 0s 0 0 0.00000 0 388 - 0.00000 - - 0s 0 0 0.00000 0 390 - 0.00000 - - 0s 0 0 0.00000 0 388 - 0.00000 - - 1s 0 0 0.00000 0 506 - 0.00000 - - 1s 0 0 0.00000 0 372 - 0.00000 - - 1s 0 0 0.00000 0 366 - 0.00000 - - 2s 0 0 0.00000 0 366 - 0.00000 - - 3s 0 0 0.00000 0 364 - 0.00000 - - 3s 0 0 0.00000 0 358 - 0.00000 - - 4s 0 0 0.00000 0 358 - 0.00000 - - 4s 0 0 0.00000 0 354 - 0.00000 - - 5s 0 0 0.00000 0 350 - 0.00000 - - 5s 0 0 0.00000 0 354 - 0.00000 - - 5s 0 0 0.00000 0 354 - 0.00000 - - 6s 0 2 0.00000 0 354 - 0.00000 - - 7s 310 64 0.00000 20 332 - 0.00000 - 139 10s 704 86 0.00000 17 544 - 0.00000 - 136 15s 707 88 0.00000 4 364 - 0.00000 - 135 21s 710 90 0.00000 7 344 - 0.00000 - 134 26s 713 92 0.00000 8 354 - 0.00000 - 134 31s 842 128 0.00000 25 374 - 0.00000 - 209 35s 1105 124 infeasible 21 - 0.00000 - 214 40s 1338 137 infeasible 29 - 0.00000 - 221 45s 1604 133 0.00000 26 370 - 0.00000 - 224 50s 1838 139 0.00000 22 393 - 0.00000 - 229 55s 2073 120 0.00000 27 382 - 0.00000 - 233 60s 2367 130 0.00000 26 374 - 0.00000 - 231 65s 2635 158 infeasible 23 - 0.00000 - 232 70s 2911 176 infeasible 29 - 0.00000 - 232 75s 3159 170 0.00000 25 368 - 0.00000 - 234 80s 3399 162 infeasible 30 - 0.00000 - 235 85s 3621 152 0.00000 22 383 - 0.00000 - 238 90s 3870 145 0.00000 26 370 - 0.00000 - 238 95s 4100 169 infeasible 28 - 0.00000 - 240 100s 4331 174 0.00000 22 412 - 0.00000 - 241 105s 4564 161 infeasible 26 - 0.00000 - 243 110s 4858 187 0.00000 25 356 - 0.00000 - 242 115s 5095 164 infeasible 27 - 0.00000 - 244 120s 5324 183 infeasible 25 - 0.00000 - 244 125s 5539 180 infeasible 31 - 0.00000 - 246 130s 5768 169 infeasible 26 - 0.00000 - 246 135s 5991 166 0.00000 23 375 - 0.00000 - 247 140s 6232 147 infeasible 25 - 0.00000 - 248 145s 6449 142 infeasible 26 - 0.00000 - 249 150s 6654 133 infeasible 25 - 0.00000 - 250 155s 6867 142 0.00000 24 362 - 0.00000 - 251 160s 7086 145 0.00000 28 384 - 0.00000 - 252 165s 7311 140 infeasible 24 - 0.00000 - 252 170s 7532 153 0.00000 28 364 - 0.00000 - 253 175s 7785 180 infeasible 30 - 0.00000 - 252 180s 8061 198 infeasible 33 - 0.00000 - 252 185s 8299 218 0.00000 28 362 - 0.00000 - 252 190s 8547 194 0.00000 21 423 - 0.00000 - 252 195s 8782 185 infeasible 25 - 0.00000 - 253 200s 9001 178 infeasible 27 - 0.00000 - 253 205s 9191 164 0.00000 26 352 - 0.00000 - 254 210s 9439 160 infeasible 20 - 0.00000 - 254 215s 9658 177 0.00000 27 342 - 0.00000 - 255 220s 9900 199 infeasible 29 - 0.00000 - 255 225s 10143 204 infeasible 30 - 0.00000 - 255 230s 10376 181 infeasible 31 - 0.00000 - 256 235s 10620 175 infeasible 31 - 0.00000 - 256 240s 10838 151 0.00000 28 372 - 0.00000 - 256 245s 11022 139 infeasible 32 - 0.00000 - 257 250s 11220 123 infeasible 26 - 0.00000 - 258 255s 11404 105 infeasible 31 - 0.00000 - 259 260s 11603 94 infeasible 30 - 0.00000 - 259 265s 11796 95 infeasible 27 - 0.00000 - 260 270s 12047 90 infeasible 25 - 0.00000 - 259 275s 12252 99 infeasible 29 - 0.00000 - 260 280s 12482 107 0.00000 23 392 - 0.00000 - 260 285s 12670 107 0.00000 25 360 - 0.00000 - 261 290s Cutting planes: Zero half: 20 Explored 12807 nodes (3384288 simplex iterations) in 292.55 seconds Thread count was 1 (of 16 available processors) Time limit reached Best objective -, best bound 0.000000000000e+00, gap - current bounds on the number of colors: 4 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 11:18:25 2012 Optimize a model with 5345 rows, 2053 columns and 16445 nonzeros Presolve time: 0.01s Presolved: 5345 rows, 2053 columns, 16445 nonzeros Variable types: 0 continuous, 2053 integer (2053 binary) Root relaxation: time limit, 354 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 - 0 - - - - 0s Explored 0 nodes (354 simplex iterations) in 0.02 seconds Thread count was 1 (of 16 available processors) Time limit reached Best objective -, best bound -, gap - optimal solution found: number of colors: 6