current bounds on the number of colors: 0 -- 112 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:08:42 2012 Optimize a model with 33096 rows, 6861 columns and 105224 nonzeros Presolve time: 0.15s Presolved: 33096 rows, 6861 columns, 105224 nonzeros Variable types: 0 continuous, 6861 integer (6861 binary) Root relaxation: objective 0.000000e+00, 362 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 (600 simplex iterations) in 0.22 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 -- 56 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:08:43 2012 Optimize a model with 16604 rows, 3725 columns and 52612 nonzeros Presolve time: 0.07s Presolved: 16604 rows, 3725 columns, 52612 nonzeros Variable types: 0 continuous, 3725 integer (3725 binary) Root relaxation: objective 0.000000e+00, 263 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 (489 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 -- 28 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:08:43 2012 Optimize a model with 8358 rows, 2157 columns and 26306 nonzeros Presolve time: 0.03s Presolved: 8358 rows, 2157 columns, 26306 nonzeros Variable types: 0 continuous, 2157 integer (2157 binary) Root relaxation: objective 0.000000e+00, 228 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 (427 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 -- 14 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:08:43 2012 Optimize a model with 4235 rows, 1373 columns and 13153 nonzeros Presolve time: 0.01s Presolved: 4235 rows, 1373 columns, 13153 nonzeros Variable types: 0 continuous, 1373 integer (1373 binary) Root relaxation: objective 0.000000e+00, 245 iterations, 0.00 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 (931 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 -- 7 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:08:43 2012 Optimize a model with 1879 rows, 925 columns and 5637 nonzeros Presolve time: 0.00s Presolved: 1879 rows, 925 columns, 5637 nonzeros Variable types: 0 continuous, 925 integer (925 binary) Root relaxation: objective 0.000000e+00, 248 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 0 168 - 0.00000 - - 0s 0 0 0.00000 0 224 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (2812 simplex iterations) in 0.23 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 -- 7 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:08:44 2012 Optimize a model with 3057 rows, 1149 columns and 9395 nonzeros Presolve time: 0.01s Presolved: 3057 rows, 1149 columns, 9395 nonzeros Variable types: 0 continuous, 1149 integer (1149 binary) Root relaxation: objective 0.000000e+00, 237 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 0 175 - 0.00000 - - 0s 0 0 0.00000 0 210 - 0.00000 - - 0s Cutting planes: Clique: 20 Zero half: 1 Explored 0 nodes (3953 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: 3 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:08:44 2012 Optimize a model with 2468 rows, 1037 columns and 7516 nonzeros Presolve time: 0.01s Presolved: 2468 rows, 1037 columns, 7516 nonzeros Variable types: 0 continuous, 1037 integer (1037 binary) Root relaxation: objective 0.000000e+00, 250 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 0 222 - 0.00000 - - 0s 0 0 0.00000 0 220 - 0.00000 - - 0s 0 0 0.00000 0 258 - 0.00000 - - 0s 0 0 0.00000 0 312 - 0.00000 - - 0s 0 0 0.00000 0 293 - 0.00000 - - 0s 0 0 0.00000 0 295 - 0.00000 - - 1s 0 0 0.00000 0 289 - 0.00000 - - 1s 0 0 0.00000 0 299 - 0.00000 - - 2s 0 0 0.00000 0 294 - 0.00000 - - 2s 0 0 0.00000 0 304 - 0.00000 - - 2s 0 0 0.00000 0 304 - 0.00000 - - 2s 0 2 0.00000 0 304 - 0.00000 - - 3s Cutting planes: Clique: 9 Zero half: 20 Explored 75 nodes (36834 simplex iterations) in 4.35 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