current bounds on the number of colors: 0 -- 165 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 19:56:27 2012 Optimize a model with 60107 rows, 14261 columns and 193356 nonzeros Presolve time: 0.18s Presolved: 60107 rows, 14261 columns, 193356 nonzeros Variable types: 0 continuous, 14261 integer (14261 binary) Root relaxation: objective 0.000000e+00, 459 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 (966 simplex iterations) in 0.34 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 -- 82 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 19:56:28 2012 Optimize a model with 30136 rows, 7496 columns and 96678 nonzeros Presolve time: 0.14s Presolved: 30136 rows, 7496 columns, 96678 nonzeros Variable types: 0 continuous, 7496 integer (7496 binary) Root relaxation: objective 0.000000e+00, 421 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 (725 simplex iterations) in 0.20 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 -- 41 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 19:56:28 2012 Optimize a model with 14785 rows, 4031 columns and 47160 nonzeros Presolve time: 0.06s Presolved: 14785 rows, 4031 columns, 47160 nonzeros Variable types: 0 continuous, 4031 integer (4031 binary) Root relaxation: objective 0.000000e+00, 346 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 (650 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 -- 20 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 19:56:29 2012 Optimize a model with 7475 rows, 2381 columns and 23580 nonzeros Presolve time: 0.02s Presolved: 7475 rows, 2381 columns, 23580 nonzeros Variable types: 0 continuous, 2381 integer (2381 binary) Root relaxation: objective 0.000000e+00, 347 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 (616 simplex iterations) in 0.04 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 -- 10 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 19:56:29 2012 Optimize a model with 3820 rows, 1556 columns and 11790 nonzeros Presolve time: 0.01s Presolved: 3820 rows, 1556 columns, 11790 nonzeros Variable types: 0 continuous, 1556 integer (1556 binary) Root relaxation: objective 0.000000e+00, 371 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 89 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (3396 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 -- 5 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 19:56:29 2012 Optimize a model with 1627 rows, 1061 columns and 4716 nonzeros Presolve removed 165 rows and 165 columns Presolve time: 0.00s Presolved: 1462 rows, 896 columns, 4386 nonzeros Variable types: 0 continuous, 896 integer (896 binary) Root relaxation: objective 0.000000e+00, 181 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 0 165 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (710 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 19:56:29 2012 Optimize a model with 2358 rows, 1226 columns and 7074 nonzeros Presolve time: 0.01s Presolved: 2358 rows, 1226 columns, 7074 nonzeros Variable types: 0 continuous, 1226 integer (1226 binary) Root relaxation: objective 0.000000e+00, 358 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 0 328 - 0.00000 - - 0s 0 0 0.00000 0 320 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (4084 simplex iterations) in 0.46 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 -- 5 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 19:56:30 2012 Optimize a model with 3089 rows, 1391 columns and 9432 nonzeros Presolve time: 0.01s Presolved: 3089 rows, 1391 columns, 9432 nonzeros Variable types: 0 continuous, 1391 integer (1391 binary) Root relaxation: objective 0.000000e+00, 384 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 0 300 - 0.00000 - - 0s 0 0 0.00000 0 298 - 0.00000 - - 0s 0 0 0.00000 0 304 - 0.00000 - - 0s 0 0 0.00000 0 323 - 0.00000 - - 0s 0 0 0.00000 0 296 - 0.00000 - - 0s 0 0 0.00000 0 292 - 0.00000 - - 1s 0 0 0.00000 0 288 - 0.00000 - - 1s 0 0 0.00000 0 292 - 0.00000 - - 1s 0 0 0.00000 0 284 - 0.00000 - - 1s 0 0 0.00000 0 284 - 0.00000 - - 1s 0 0 0.00000 0 282 - 0.00000 - - 2s 0 0 0.00000 0 276 - 0.00000 - - 2s 0 0 0.00000 0 270 - 0.00000 - - 2s 0 0 0.00000 0 264 - 0.00000 - - 3s 0 0 0.00000 0 264 - 0.00000 - - 3s 0 0 0.00000 0 264 - 0.00000 - - 3s 0 0 0.00000 0 264 - 0.00000 - - 3s 0 2 0.00000 0 264 - 0.00000 - - 3s 263 81 0.00000 17 260 - 0.00000 - 87.8 5s 709 79 0.00000 6 371 - 0.00000 - 77.8 10s 940 31 0.00000 29 240 - 0.00000 - 121 15s 1378 34 infeasible 20 - 0.00000 - 146 20s 1812 40 0.00000 24 262 - 0.00000 - 159 25s 2249 49 0.00000 24 301 - 0.00000 - 165 30s 2668 46 infeasible 22 - 0.00000 - 170 35s 3104 34 0.00000 23 270 - 0.00000 - 173 40s 3549 49 infeasible 24 - 0.00000 - 175 45s 3983 17 infeasible 18 - 0.00000 - 177 50s Cutting planes: Clique: 1 Zero half: 16 Explored 4181 nodes (787864 simplex iterations) in 52.71 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