current bounds on the number of colors: 0 -- 102 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:54:07 2012 Optimize a model with 25755 rows, 5705 columns and 82161 nonzeros Presolve time: 0.13s Presolved: 25755 rows, 5705 columns, 82161 nonzeros Variable types: 0 continuous, 5705 integer (5705 binary) Root relaxation: objective 0.000000e+00, 269 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 (514 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 -- 51 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:54:08 2012 Optimize a model with 12677 rows, 3053 columns and 40275 nonzeros Presolve time: 0.05s Presolved: 12677 rows, 3053 columns, 40275 nonzeros Variable types: 0 continuous, 3053 integer (3053 binary) Root relaxation: objective 0.000000e+00, 236 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 (508 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 19:54:08 2012 Optimize a model with 6138 rows, 1727 columns and 19332 nonzeros Presolve time: 0.02s Presolved: 6138 rows, 1727 columns, 19332 nonzeros Variable types: 0 continuous, 1727 integer (1727 binary) Root relaxation: objective 0.000000e+00, 207 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 (470 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 19:54:08 2012 Optimize a model with 3120 rows, 1115 columns and 9666 nonzeros Presolve time: 0.01s Presolved: 3120 rows, 1115 columns, 9666 nonzeros Variable types: 0 continuous, 1115 integer (1115 binary) Root relaxation: objective 0.000000e+00, 224 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 (709 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 19:54:08 2012 Optimize a model with 1611 rows, 809 columns and 4833 nonzeros Presolve time: 0.00s Presolved: 1611 rows, 809 columns, 4833 nonzeros Variable types: 0 continuous, 809 integer (809 binary) Root relaxation: objective 0.000000e+00, 235 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 0 152 - 0.00000 - - 0s 0 0 0.00000 0 204 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3122 simplex iterations) in 0.24 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 19:54:08 2012 Optimize a model with 2114 rows, 911 columns and 6444 nonzeros Presolve time: 0.01s Presolved: 2114 rows, 911 columns, 6444 nonzeros Variable types: 0 continuous, 911 integer (911 binary) Root relaxation: objective 0.000000e+00, 227 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 0 204 - 0.00000 - - 0s 0 0 0.00000 0 200 - 0.00000 - - 0s 0 0 0.00000 0 269 - 0.00000 - - 0s 0 0 0.00000 0 283 - 0.00000 - - 0s 0 0 0.00000 0 281 - 0.00000 - - 0s 0 0 0.00000 0 273 - 0.00000 - - 0s 0 0 0.00000 0 278 - 0.00000 - - 1s 0 0 0.00000 0 271 - 0.00000 - - 1s 0 0 0.00000 0 270 - 0.00000 - - 1s 0 0 0.00000 0 275 - 0.00000 - - 1s 0 0 0.00000 0 270 - 0.00000 - - 2s 0 0 0.00000 0 267 - 0.00000 - - 2s 0 0 0.00000 0 260 - 0.00000 - - 2s 0 0 0.00000 0 249 - 0.00000 - - 2s 0 0 0.00000 0 263 - 0.00000 - - 2s 0 0 0.00000 0 254 - 0.00000 - - 3s 0 2 0.00000 0 254 - 0.00000 - - 3s Cutting planes: Clique: 9 Zero half: 11 Explored 29 nodes (29519 simplex iterations) in 3.59 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 19:54:12 2012 Optimize a model with 2617 rows, 1013 columns and 8055 nonzeros Presolve time: 0.01s Presolved: 2617 rows, 1013 columns, 8055 nonzeros Variable types: 0 continuous, 1013 integer (1013 binary) Root relaxation: objective 0.000000e+00, 223 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 72 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1862 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% optimal solution found: number of colors: 5