current bounds on the number of colors: 0 -- 182 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 02:08:42 2012 Optimize a model with 78442 rows, 17422 columns and 251342 nonzeros Presolve time: 0.24s Presolved: 78442 rows, 17422 columns, 251342 nonzeros Variable types: 0 continuous, 17422 integer (17422 binary) Root relaxation: objective 0.000000e+00, 668 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 (1079 simplex iterations) in 0.42 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 -- 91 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 02:08:43 2012 Optimize a model with 38882 rows, 9050 columns and 124290 nonzeros Presolve time: 0.15s Presolved: 38882 rows, 9050 columns, 124290 nonzeros Variable types: 0 continuous, 9050 integer (9050 binary) Root relaxation: objective 0.000000e+00, 505 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 (877 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 -- 45 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 02:08:44 2012 Optimize a model with 19102 rows, 4864 columns and 60764 nonzeros Presolve time: 0.07s Presolved: 19102 rows, 4864 columns, 60764 nonzeros Variable types: 0 continuous, 4864 integer (4864 binary) Root relaxation: objective 0.000000e+00, 433 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 (792 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 -- 22 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 02:08:44 2012 Optimize a model with 9642 rows, 2862 columns and 30382 nonzeros Presolve time: 0.03s Presolved: 9642 rows, 2862 columns, 30382 nonzeros Variable types: 0 continuous, 2862 integer (2862 binary) Root relaxation: objective 0.000000e+00, 389 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 (740 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 02:08:45 2012 Optimize a model with 4482 rows, 1770 columns and 13810 nonzeros Presolve time: 0.01s Presolved: 4482 rows, 1770 columns, 13810 nonzeros Variable types: 0 continuous, 1770 integer (1770 binary) Root relaxation: objective 0.000000e+00, 402 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 96 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (2983 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 02:08:45 2012 Optimize a model with 1902 rows, 1224 columns and 5524 nonzeros Presolve removed 182 rows and 182 columns Presolve time: 0.00s Presolved: 1720 rows, 1042 columns, 5160 nonzeros Variable types: 0 continuous, 1042 integer (1042 binary) Root relaxation: objective 0.000000e+00, 194 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 0 182 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (798 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 02:08:45 2012 Optimize a model with 2762 rows, 1406 columns and 8286 nonzeros Presolve time: 0.01s Presolved: 2762 rows, 1406 columns, 8286 nonzeros Variable types: 0 continuous, 1406 integer (1406 binary) Root relaxation: objective 0.000000e+00, 384 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 0 294 - 0.00000 - - 0s 0 0 0.00000 0 356 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (5860 simplex iterations) in 0.67 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 02:08:46 2012 Optimize a model with 3622 rows, 1588 columns and 11048 nonzeros Presolve time: 0.01s Presolved: 3622 rows, 1588 columns, 11048 nonzeros Variable types: 0 continuous, 1588 integer (1588 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 0 342 - 0.00000 - - 0s 0 0 0.00000 0 326 - 0.00000 - - 0s 0 0 0.00000 0 342 - 0.00000 - - 0s 0 0 0.00000 0 420 - 0.00000 - - 0s 0 0 0.00000 0 314 - 0.00000 - - 1s 0 0 0.00000 0 308 - 0.00000 - - 1s 0 0 0.00000 0 302 - 0.00000 - - 2s 0 0 0.00000 0 314 - 0.00000 - - 2s 0 0 0.00000 0 282 - 0.00000 - - 3s 0 0 0.00000 0 282 - 0.00000 - - 3s 0 0 0.00000 0 266 - 0.00000 - - 4s 0 0 0.00000 0 266 - 0.00000 - - 4s 0 0 0.00000 0 266 - 0.00000 - - 4s 0 2 0.00000 0 266 - 0.00000 - - 5s 783 27 0.00000 23 315 - 0.00000 - 104 10s 907 38 0.00000 24 306 - 0.00000 - 101 16s 911 41 0.00000 7 274 - 0.00000 - 100 21s 914 43 0.00000 11 398 - 0.00000 - 100 26s 931 48 0.00000 21 398 - 0.00000 - 163 30s 1238 26 0.00000 30 346 - 0.00000 - 179 35s 1588 48 0.00000 24 316 - 0.00000 - 187 40s 1895 63 infeasible 31 - 0.00000 - 194 45s 2200 56 infeasible 31 - 0.00000 - 199 50s 2490 46 0.00000 29 404 - 0.00000 - 204 55s 2784 54 infeasible 31 - 0.00000 - 207 60s 3120 56 infeasible 35 - 0.00000 - 210 65s 3435 53 0.00000 29 328 - 0.00000 - 211 70s 3743 59 0.00000 28 341 - 0.00000 - 212 75s 4052 60 infeasible 34 - 0.00000 - 213 80s 4374 46 infeasible 29 - 0.00000 - 215 85s 4703 53 infeasible 34 - 0.00000 - 214 90s 5018 48 0.00000 29 314 - 0.00000 - 215 95s 5320 38 0.00000 31 316 - 0.00000 - 217 100s 5653 39 infeasible 28 - 0.00000 - 216 105s 5984 76 0.00000 27 330 - 0.00000 - 216 110s 6297 51 infeasible 30 - 0.00000 - 217 115s 6582 46 0.00000 28 286 - 0.00000 - 217 120s 6875 35 infeasible 27 - 0.00000 - 218 125s 7222 38 0.00000 27 328 - 0.00000 - 217 130s 7539 33 0.00000 28 337 - 0.00000 - 217 135s 7820 6 0.00000 27 345 - 0.00000 - 218 140s Cutting planes: Zero half: 14 Explored 7883 nodes (1760737 simplex iterations) in 140.93 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