current bounds on the number of colors: 0 -- 102 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:53:22 2012 Optimize a model with 26928 rows, 5728 columns and 85680 nonzeros Presolve time: 0.13s Presolved: 26928 rows, 5728 columns, 85680 nonzeros Variable types: 0 continuous, 5728 integer (5728 binary) Root relaxation: objective 0.000000e+00, 372 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 (663 simplex iterations) in 0.19 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 -- 51 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:53:23 2012 Optimize a model with 13252 rows, 3076 columns and 42000 nonzeros Presolve time: 0.05s Presolved: 13252 rows, 3076 columns, 42000 nonzeros Variable types: 0 continuous, 3076 integer (3076 binary) Root relaxation: objective 0.000000e+00, 242 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 (444 simplex iterations) in 0.08 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 -- 25 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:53:23 2012 Optimize a model with 6414 rows, 1750 columns and 20160 nonzeros Presolve time: 0.02s Presolved: 6414 rows, 1750 columns, 20160 nonzeros Variable types: 0 continuous, 1750 integer (1750 binary) Root relaxation: objective 0.000000e+00, 214 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 (397 simplex iterations) in 0.03 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 -- 12 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:53:23 2012 Optimize a model with 3258 rows, 1138 columns and 10080 nonzeros Presolve time: 0.01s Presolved: 3258 rows, 1138 columns, 10080 nonzeros Variable types: 0 continuous, 1138 integer (1138 binary) Root relaxation: objective 0.000000e+00, 226 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 (878 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 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:53:23 2012 Optimize a model with 1680 rows, 832 columns and 5040 nonzeros Presolve time: 0.00s Presolved: 1680 rows, 832 columns, 5040 nonzeros Variable types: 0 continuous, 832 integer (832 binary) Root relaxation: objective 0.000000e+00, 242 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 0 180 - 0.00000 - - 0s 0 0 0.00000 0 200 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3016 simplex iterations) in 0.25 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 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:53:24 2012 Optimize a model with 2206 rows, 934 columns and 6720 nonzeros Presolve time: 0.01s Presolved: 2206 rows, 934 columns, 6720 nonzeros Variable types: 0 continuous, 934 integer (934 binary) Root relaxation: objective 0.000000e+00, 236 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 0 196 - 0.00000 - - 0s 0 0 0.00000 0 233 - 0.00000 - - 0s 0 0 0.00000 0 186 - 0.00000 - - 0s 0 0 0.00000 0 295 - 0.00000 - - 0s 0 0 0.00000 0 176 - 0.00000 - - 0s 0 0 0.00000 0 174 - 0.00000 - - 1s 0 0 0.00000 0 279 - 0.00000 - - 1s 0 0 0.00000 0 269 - 0.00000 - - 1s 0 0 0.00000 0 260 - 0.00000 - - 1s 0 0 0.00000 0 264 - 0.00000 - - 2s 0 0 0.00000 0 264 - 0.00000 - - 2s 0 0 0.00000 0 264 - 0.00000 - - 2s 0 2 0.00000 0 264 - 0.00000 - - 2s Cutting planes: Clique: 3 Zero half: 18 Explored 25 nodes (27554 simplex iterations) in 3.16 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - current bounds on the number of colors: 4 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:53:27 2012 Optimize a model with 2732 rows, 1036 columns and 8400 nonzeros Presolve time: 0.01s Presolved: 2732 rows, 1036 columns, 8400 nonzeros Variable types: 0 continuous, 1036 integer (1036 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 96 - 0.00000 - - 0s 0 0 0.00000 0 96 - 0.00000 - - 0s * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (5405 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% optimal solution found: number of colors: 5