current bounds on the number of colors: 0 -- 102 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:53:34 2012 Optimize a model with 25806 rows, 5706 columns and 82314 nonzeros Presolve time: 0.13s Presolved: 25806 rows, 5706 columns, 82314 nonzeros Variable types: 0 continuous, 5706 integer (5706 binary) Root relaxation: objective 0.000000e+00, 354 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 (599 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 19:53:34 2012 Optimize a model with 12702 rows, 3054 columns and 40350 nonzeros Presolve time: 0.05s Presolved: 12702 rows, 3054 columns, 40350 nonzeros Variable types: 0 continuous, 3054 integer (3054 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 (459 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 19:53:35 2012 Optimize a model with 6150 rows, 1728 columns and 19368 nonzeros Presolve time: 0.02s Presolved: 6150 rows, 1728 columns, 19368 nonzeros Variable types: 0 continuous, 1728 integer (1728 binary) Root relaxation: objective 0.000000e+00, 204 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 (545 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 -- 12 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:53:35 2012 Optimize a model with 3126 rows, 1116 columns and 9684 nonzeros Presolve time: 0.01s Presolved: 3126 rows, 1116 columns, 9684 nonzeros Variable types: 0 continuous, 1116 integer (1116 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 (841 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 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:53:35 2012 Optimize a model with 1614 rows, 810 columns and 4842 nonzeros Presolve time: 0.00s Presolved: 1614 rows, 810 columns, 4842 nonzeros Variable types: 0 continuous, 810 integer (810 binary) Root relaxation: objective 0.000000e+00, 222 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 0 160 - 0.00000 - - 0s 0 0 0.00000 0 241 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3538 simplex iterations) in 0.28 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 19:53:35 2012 Optimize a model with 2118 rows, 912 columns and 6456 nonzeros Presolve time: 0.01s Presolved: 2118 rows, 912 columns, 6456 nonzeros Variable types: 0 continuous, 912 integer (912 binary) Root relaxation: objective 0.000000e+00, 239 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 0 200 - 0.00000 - - 0s 0 0 0.00000 0 198 - 0.00000 - - 0s 0 0 0.00000 0 262 - 0.00000 - - 0s 0 0 0.00000 0 260 - 0.00000 - - 0s 0 0 0.00000 0 257 - 0.00000 - - 0s 0 0 0.00000 0 254 - 0.00000 - - 0s 0 0 0.00000 0 254 - 0.00000 - - 0s 0 0 0.00000 0 225 - 0.00000 - - 1s 0 0 0.00000 0 256 - 0.00000 - - 1s 0 0 0.00000 0 275 - 0.00000 - - 1s 0 0 0.00000 0 266 - 0.00000 - - 1s 0 0 0.00000 0 263 - 0.00000 - - 1s 0 0 0.00000 0 275 - 0.00000 - - 2s 0 0 0.00000 0 275 - 0.00000 - - 2s 0 2 0.00000 0 275 - 0.00000 - - 2s 402 7 infeasible 10 - 0.00000 - 111 5s Cutting planes: Gomory: 1 Clique: 12 Zero half: 34 Explored 422 nodes (66042 simplex iterations) in 5.16 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 19:53:40 2012 Optimize a model with 2622 rows, 1014 columns and 8070 nonzeros Presolve time: 0.01s Presolved: 2622 rows, 1014 columns, 8070 nonzeros Variable types: 0 continuous, 1014 integer (1014 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 0.00000 0 126 - 0.00000 - - 0s * 0 0 0 0.0000000 0.00000 0.0% - 0s Cutting planes: Gomory: 2 Clique: 30 MIR: 1 Zero half: 139 Explored 0 nodes (2143 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% optimal solution found: number of colors: 5