current bounds on the number of colors: 0 -- 188 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 04:26:15 2012 Optimize a model with 82156 rows, 18544 columns and 263576 nonzeros Presolve time: 0.26s Presolved: 82156 rows, 18544 columns, 263576 nonzeros Variable types: 0 continuous, 18544 integer (18544 binary) Root relaxation: objective 0.000000e+00, 749 iterations, 0.09 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 (1180 simplex iterations) in 0.47 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 -- 94 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 04:26:17 2012 Optimize a model with 41172 rows, 9708 columns and 131788 nonzeros Presolve time: 0.15s Presolved: 41172 rows, 9708 columns, 131788 nonzeros Variable types: 0 continuous, 9708 integer (9708 binary) Root relaxation: objective 0.000000e+00, 642 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 (1086 simplex iterations) in 0.25 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 -- 47 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 04:26:17 2012 Optimize a model with 20244 rows, 5196 columns and 64492 nonzeros Presolve time: 0.08s Presolved: 20244 rows, 5196 columns, 64492 nonzeros Variable types: 0 continuous, 5196 integer (5196 binary) Root relaxation: objective 0.000000e+00, 413 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 (756 simplex iterations) in 0.12 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 -- 23 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 04:26:18 2012 Optimize a model with 9780 rows, 2940 columns and 30844 nonzeros Presolve time: 0.03s Presolved: 9780 rows, 2940 columns, 30844 nonzeros Variable types: 0 continuous, 2940 integer (2940 binary) Root relaxation: objective 0.000000e+00, 396 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 (735 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 04:26:18 2012 Optimize a model with 4548 rows, 1812 columns and 14020 nonzeros Presolve time: 0.01s Presolved: 4548 rows, 1812 columns, 14020 nonzeros Variable types: 0 continuous, 1812 integer (1812 binary) Root relaxation: objective 0.000000e+00, 427 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 0 110 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (4172 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 04:26:18 2012 Optimize a model with 1932 rows, 1248 columns and 5608 nonzeros Presolve removed 188 rows and 188 columns Presolve time: 0.00s Presolved: 1744 rows, 1060 columns, 5232 nonzeros Variable types: 0 continuous, 1060 integer (1060 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 0 188 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (787 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 04:26:18 2012 Optimize a model with 2804 rows, 1436 columns and 8412 nonzeros Presolve time: 0.01s Presolved: 2804 rows, 1436 columns, 8412 nonzeros Variable types: 0 continuous, 1436 integer (1436 binary) Root relaxation: objective 0.000000e+00, 443 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 0 374 - 0.00000 - - 0s 0 0 0.00000 0 372 - 0.00000 - - 0s 0 0 0.00000 0 522 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 1s Cutting planes: Gomory: 38 Zero half: 509 Explored 0 nodes (8275 simplex iterations) in 1.16 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 04:26:20 2012 Optimize a model with 3676 rows, 1624 columns and 11216 nonzeros Presolve time: 0.01s Presolved: 3676 rows, 1624 columns, 11216 nonzeros Variable types: 0 continuous, 1624 integer (1624 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 0 362 - 0.00000 - - 0s 0 0 0.00000 0 354 - 0.00000 - - 0s 0 0 0.00000 0 346 - 0.00000 - - 0s 0 0 0.00000 0 417 - 0.00000 - - 0s 0 0 0.00000 0 326 - 0.00000 - - 1s 0 0 0.00000 0 322 - 0.00000 - - 1s 0 0 0.00000 0 314 - 0.00000 - - 2s 0 0 0.00000 0 314 - 0.00000 - - 2s 0 0 0.00000 0 315 - 0.00000 - - 2s 0 0 0.00000 0 294 - 0.00000 - - 3s 0 0 0.00000 0 296 - 0.00000 - - 3s 0 0 0.00000 0 294 - 0.00000 - - 3s 0 2 0.00000 0 294 - 0.00000 - - 4s 173 43 0.00000 20 326 - 0.00000 - 99.4 5s 607 78 0.00000 18 342 - 0.00000 - 97.2 11s 610 80 0.00000 13 344 - 0.00000 - 96.8 15s 615 83 0.00000 14 304 - 0.00000 - 96.0 21s 618 85 0.00000 17 300 - 0.00000 - 95.5 25s 893 27 0.00000 22 328 - 0.00000 - 200 30s 1247 31 0.00000 26 378 - 0.00000 - 204 35s 1594 38 0.00000 23 391 - 0.00000 - 207 40s 1951 37 infeasible 27 - 0.00000 - 207 45s 2273 39 0.00000 24 370 - 0.00000 - 211 50s 2650 98 infeasible 30 - 0.00000 - 208 55s 2992 78 0.00000 23 422 - 0.00000 - 210 60s 3344 88 0.00000 28 332 - 0.00000 - 210 65s 3676 84 infeasible 28 - 0.00000 - 211 70s 4040 88 infeasible 29 - 0.00000 - 209 75s 4389 93 infeasible 29 - 0.00000 - 209 80s 4724 98 infeasible 24 - 0.00000 - 210 85s 5020 84 0.00000 23 342 - 0.00000 - 211 90s 5355 79 infeasible 29 - 0.00000 - 212 95s 5697 69 infeasible 27 - 0.00000 - 212 100s 6010 62 0.00000 20 411 - 0.00000 - 213 105s 6340 62 0.00000 18 402 - 0.00000 - 213 110s 6637 67 infeasible 27 - 0.00000 - 214 115s 6902 56 infeasible 26 - 0.00000 - 216 120s 7204 58 infeasible 29 - 0.00000 - 216 125s 7561 53 infeasible 31 - 0.00000 - 216 130s 7944 54 0.00000 27 316 - 0.00000 - 215 135s 8234 44 0.00000 28 318 - 0.00000 - 216 140s 8520 36 infeasible 26 - 0.00000 - 216 145s 8828 40 0.00000 23 389 - 0.00000 - 217 150s 9117 39 0.00000 21 322 - 0.00000 - 218 155s 9407 29 infeasible 28 - 0.00000 - 218 160s 9720 22 infeasible 27 - 0.00000 - 218 165s 10012 16 infeasible 24 - 0.00000 - 219 170s 10310 20 infeasible 29 - 0.00000 - 220 175s 10654 18 infeasible 25 - 0.00000 - 220 180s 11030 10 infeasible 22 - 0.00000 - 219 185s 11334 6 infeasible 24 - 0.00000 - 220 190s Cutting planes: Zero half: 10 Explored 11439 nodes (2547567 simplex iterations) in 191.71 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