current bounds on the number of colors: 0 -- 177 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 23:39:31 2012 Optimize a model with 68465 rows, 16352 columns and 220440 nonzeros Presolve time: 0.21s Presolved: 68465 rows, 16352 columns, 220440 nonzeros Variable types: 0 continuous, 16352 integer (16352 binary) Root relaxation: objective 0.000000e+00, 655 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 (655 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 -- 88 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 23:39:32 2012 Optimize a model with 34321 rows, 8564 columns and 110220 nonzeros Presolve time: 0.15s Presolved: 34321 rows, 8564 columns, 110220 nonzeros Variable types: 0 continuous, 8564 integer (8564 binary) Root relaxation: objective 0.000000e+00, 550 iterations, 0.03 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 (941 simplex iterations) in 0.23 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 Fri Dec 14 23:39:33 2012 Optimize a model with 17249 rows, 4670 columns and 55110 nonzeros Presolve time: 0.07s Presolved: 17249 rows, 4670 columns, 55110 nonzeros Variable types: 0 continuous, 4670 integer (4670 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 (693 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 Fri Dec 14 23:39:33 2012 Optimize a model with 8713 rows, 2723 columns and 27555 nonzeros Presolve time: 0.03s Presolved: 8713 rows, 2723 columns, 27555 nonzeros Variable types: 0 continuous, 2723 integer (2723 binary) Root relaxation: objective 0.000000e+00, 375 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 (668 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 Fri Dec 14 23:39:33 2012 Optimize a model with 4057 rows, 1661 columns and 12525 nonzeros Presolve time: 0.01s Presolved: 4057 rows, 1661 columns, 12525 nonzeros Variable types: 0 continuous, 1661 integer (1661 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (3267 simplex iterations) in 0.17 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 23:39:34 2012 Optimize a model with 1729 rows, 1130 columns and 5010 nonzeros Presolve removed 177 rows and 177 columns Presolve time: 0.00s Presolved: 1552 rows, 953 columns, 4656 nonzeros Variable types: 0 continuous, 953 integer (953 binary) Root relaxation: objective 0.000000e+00, 189 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 0 177 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (765 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 23:39:34 2012 Optimize a model with 2505 rows, 1307 columns and 7515 nonzeros Presolve time: 0.01s Presolved: 2505 rows, 1307 columns, 7515 nonzeros Variable types: 0 continuous, 1307 integer (1307 binary) Root relaxation: objective 0.000000e+00, 397 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 0 348 - 0.00000 - - 0s 0 0 0.00000 0 346 - 0.00000 - - 0s 0 0 0.00000 0 484 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 1s Cutting planes: Gomory: 17 Zero half: 505 Explored 0 nodes (8276 simplex iterations) in 1.11 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 23:39:35 2012 Optimize a model with 3281 rows, 1484 columns and 10020 nonzeros Presolve time: 0.01s Presolved: 3281 rows, 1484 columns, 10020 nonzeros Variable types: 0 continuous, 1484 integer (1484 binary) Root relaxation: objective 0.000000e+00, 400 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 0 318 - 0.00000 - - 0s 0 0 0.00000 0 320 - 0.00000 - - 0s 0 0 0.00000 0 344 - 0.00000 - - 0s 0 0 0.00000 0 442 - 0.00000 - - 0s 0 0 0.00000 0 324 - 0.00000 - - 1s 0 0 0.00000 0 312 - 0.00000 - - 1s 0 0 0.00000 0 320 - 0.00000 - - 1s 0 0 0.00000 0 308 - 0.00000 - - 1s 0 0 0.00000 0 312 - 0.00000 - - 2s 0 0 0.00000 0 308 - 0.00000 - - 2s 0 0 0.00000 0 302 - 0.00000 - - 2s 0 0 0.00000 0 306 - 0.00000 - - 2s 0 0 0.00000 0 306 - 0.00000 - - 3s 0 2 0.00000 0 306 - 0.00000 - - 3s 460 35 0.00000 17 280 - 0.00000 - 77.2 5s 719 47 0.00000 23 296 - 0.00000 - 72.2 10s 725 51 0.00000 19 236 - 0.00000 - 71.6 15s 730 55 0.00000 4 240 - 0.00000 - 71.1 20s 787 61 infeasible 25 - 0.00000 - 178 25s 1287 53 infeasible 29 - 0.00000 - 176 30s 1859 81 infeasible 26 - 0.00000 - 172 35s 2381 55 infeasible 27 - 0.00000 - 174 40s 2848 56 infeasible 29 - 0.00000 - 177 45s 3381 59 0.00000 29 278 - 0.00000 - 176 50s 3883 63 infeasible 26 - 0.00000 - 176 55s 4402 98 infeasible 32 - 0.00000 - 176 60s 4889 67 0.00000 28 300 - 0.00000 - 177 65s 5386 60 0.00000 27 314 - 0.00000 - 177 70s 5796 46 0.00000 23 337 - 0.00000 - 179 75s 6283 51 0.00000 28 314 - 0.00000 - 179 80s 6812 58 infeasible 30 - 0.00000 - 179 85s 7354 42 0.00000 22 350 - 0.00000 - 178 90s 7863 87 0.00000 22 316 - 0.00000 - 178 95s 8354 120 0.00000 32 282 - 0.00000 - 178 100s 8852 114 infeasible 28 - 0.00000 - 178 105s 9411 133 0.00000 28 292 - 0.00000 - 176 110s 9964 128 infeasible 31 - 0.00000 - 176 115s 10454 120 0.00000 26 304 - 0.00000 - 176 120s 10920 98 infeasible 27 - 0.00000 - 177 125s 11361 75 infeasible 29 - 0.00000 - 177 130s 11929 89 0.00000 25 306 - 0.00000 - 176 135s 12489 83 0.00000 28 288 - 0.00000 - 176 140s 12992 82 0.00000 28 324 - 0.00000 - 176 145s 13455 93 0.00000 30 296 - 0.00000 - 176 150s 13947 83 infeasible 26 - 0.00000 - 177 155s 14482 86 infeasible 27 - 0.00000 - 176 160s 15068 112 infeasible 31 - 0.00000 - 176 165s 15636 154 infeasible 35 - 0.00000 - 175 170s 16140 164 infeasible 28 - 0.00000 - 175 175s 16703 173 0.00000 26 288 - 0.00000 - 175 180s 17268 137 infeasible 34 - 0.00000 - 174 185s 17848 161 infeasible 30 - 0.00000 - 174 190s 18404 155 infeasible 31 - 0.00000 - 174 195s 18958 125 infeasible 28 - 0.00000 - 173 200s 19393 146 0.00000 26 302 - 0.00000 - 174 205s 19917 144 0.00000 22 314 - 0.00000 - 174 210s 20392 161 0.00000 28 314 - 0.00000 - 174 215s 20937 162 0.00000 28 300 - 0.00000 - 174 220s 21425 132 infeasible 31 - 0.00000 - 174 225s 21914 121 infeasible 30 - 0.00000 - 175 230s 22536 153 infeasible 31 - 0.00000 - 174 235s 23143 156 infeasible 27 - 0.00000 - 173 240s 23682 141 0.00000 26 280 - 0.00000 - 173 245s 24202 155 infeasible 33 - 0.00000 - 173 250s 24709 150 infeasible 31 - 0.00000 - 173 255s 25210 131 0.00000 29 280 - 0.00000 - 174 260s 25713 122 0.00000 25 274 - 0.00000 - 174 265s 26263 145 infeasible 23 - 0.00000 - 173 270s 26811 161 infeasible 24 - 0.00000 - 173 275s 27340 126 infeasible 30 - 0.00000 - 173 280s 27837 125 infeasible 29 - 0.00000 - 173 285s 28370 128 infeasible 28 - 0.00000 - 173 290s Cutting planes: Zero half: 20 Explored 28897 nodes (5028138 simplex iterations) in 294.79 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