current bounds on the number of colors: 0 -- 166 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 20:03:40 2012 Optimize a model with 60590 rows, 14506 columns and 195050 nonzeros Presolve time: 0.18s Presolved: 60590 rows, 14506 columns, 195050 nonzeros Variable types: 0 continuous, 14506 integer (14506 binary) Root relaxation: objective 0.000000e+00, 664 iterations, 0.07 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 (1010 simplex iterations) in 0.31 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 -- 83 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 20:03:41 2012 Optimize a model with 30014 rows, 7534 columns and 96350 nonzeros Presolve time: 0.14s Presolved: 30014 rows, 7534 columns, 96350 nonzeros Variable types: 0 continuous, 7534 integer (7534 binary) Root relaxation: objective 0.000000e+00, 559 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 (921 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 -- 41 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 20:03:41 2012 Optimize a model with 14726 rows, 4048 columns and 47000 nonzeros Presolve time: 0.05s Presolved: 14726 rows, 4048 columns, 47000 nonzeros Variable types: 0 continuous, 4048 integer (4048 binary) Root relaxation: objective 0.000000e+00, 376 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 (687 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 20:03:42 2012 Optimize a model with 7446 rows, 2388 columns and 23500 nonzeros Presolve time: 0.02s Presolved: 7446 rows, 2388 columns, 23500 nonzeros Variable types: 0 continuous, 2388 integer (2388 binary) Root relaxation: objective 0.000000e+00, 351 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 (660 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 20:03:42 2012 Optimize a model with 3806 rows, 1558 columns and 11750 nonzeros Presolve time: 0.01s Presolved: 3806 rows, 1558 columns, 11750 nonzeros Variable types: 0 continuous, 1558 integer (1558 binary) Root relaxation: objective 0.000000e+00, 369 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 (3031 simplex iterations) in 0.18 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 20:03:42 2012 Optimize a model with 1622 rows, 1060 columns and 4700 nonzeros Presolve removed 166 rows and 166 columns Presolve time: 0.00s Presolved: 1456 rows, 894 columns, 4368 nonzeros Variable types: 0 continuous, 894 integer (894 binary) Root relaxation: objective 0.000000e+00, 175 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 0 166 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (698 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 20:03:42 2012 Optimize a model with 2350 rows, 1226 columns and 7050 nonzeros Presolve time: 0.01s Presolved: 2350 rows, 1226 columns, 7050 nonzeros Variable types: 0 continuous, 1226 integer (1226 binary) Root relaxation: objective 0.000000e+00, 390 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 0 234 - 0.00000 - - 0s 0 0 0.00000 0 320 - 0.00000 - - 0s 0 0 0.00000 0 427 - 0.00000 - - 1s 0 0 0.00000 0 470 - 0.00000 - - 1s 0 0 infeasible 0 - 0.10000 - - 1s Cutting planes: Zero half: 545 Explored 0 nodes (11134 simplex iterations) in 1.31 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 20:03:43 2012 Optimize a model with 3078 rows, 1392 columns and 9400 nonzeros Presolve time: 0.01s Presolved: 3078 rows, 1392 columns, 9400 nonzeros Variable types: 0 continuous, 1392 integer (1392 binary) Root relaxation: objective 0.000000e+00, 366 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 0 324 - 0.00000 - - 0s 0 0 0.00000 0 316 - 0.00000 - - 0s 0 0 0.00000 0 298 - 0.00000 - - 0s 0 0 0.00000 0 366 - 0.00000 - - 0s 0 0 0.00000 0 282 - 0.00000 - - 0s 0 0 0.00000 0 262 - 0.00000 - - 1s 0 0 0.00000 0 258 - 0.00000 - - 1s 0 0 0.00000 0 254 - 0.00000 - - 1s 0 0 0.00000 0 244 - 0.00000 - - 2s 0 0 0.00000 0 242 - 0.00000 - - 2s 0 0 0.00000 0 248 - 0.00000 - - 2s 0 0 0.00000 0 380 - 0.00000 - - 2s 0 0 0.00000 0 379 - 0.00000 - - 3s 0 0 0.00000 0 345 - 0.00000 - - 3s 0 0 0.00000 0 345 - 0.00000 - - 4s 0 0 0.00000 0 341 - 0.00000 - - 4s 0 2 0.00000 0 341 - 0.00000 - - 5s 707 31 0.00000 12 293 - 0.00000 - 87.7 10s 714 36 infeasible 12 - 0.00000 - 129 15s 1165 60 0.00000 24 311 - 0.00000 - 150 20s 1643 58 infeasible 28 - 0.00000 - 162 25s 2134 57 0.00000 23 280 - 0.00000 - 169 30s 2591 66 infeasible 28 - 0.00000 - 172 35s 3058 51 infeasible 29 - 0.00000 - 175 40s 3526 49 infeasible 28 - 0.00000 - 177 45s 3966 55 0.00000 25 290 - 0.00000 - 180 50s 4419 34 0.00000 23 332 - 0.00000 - 182 55s 4878 35 infeasible 25 - 0.00000 - 182 60s 5358 23 infeasible 22 - 0.00000 - 183 65s 5820 5 0.00000 22 306 - 0.00000 - 183 70s Cutting planes: Clique: 1 Zero half: 17 Explored 5928 nodes (1129120 simplex iterations) in 71.26 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