current bounds on the number of colors: 0 -- 100 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:52:11 2012 Optimize a model with 24850 rows, 5495 columns and 79250 nonzeros Presolve time: 0.13s Presolved: 24850 rows, 5495 columns, 79250 nonzeros Variable types: 0 continuous, 5495 integer (5495 binary) Root relaxation: objective 0.000000e+00, 285 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 (527 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 -- 50 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:52:12 2012 Optimize a model with 12475 rows, 2995 columns and 39625 nonzeros Presolve time: 0.05s Presolved: 12475 rows, 2995 columns, 39625 nonzeros Variable types: 0 continuous, 2995 integer (2995 binary) Root relaxation: objective 0.000000e+00, 237 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 (430 simplex iterations) in 0.07 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 19:52:12 2012 Optimize a model with 6040 rows, 1695 columns and 19020 nonzeros Presolve time: 0.02s Presolved: 6040 rows, 1695 columns, 19020 nonzeros Variable types: 0 continuous, 1695 integer (1695 binary) Root relaxation: objective 0.000000e+00, 210 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 (406 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 19:52:12 2012 Optimize a model with 3070 rows, 1095 columns and 9510 nonzeros Presolve time: 0.01s Presolved: 3070 rows, 1095 columns, 9510 nonzeros Variable types: 0 continuous, 1095 integer (1095 binary) Root relaxation: objective 0.000000e+00, 210 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 (496 simplex iterations) in 0.02 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 19:52:12 2012 Optimize a model with 1585 rows, 795 columns and 4755 nonzeros Presolve time: 0.00s Presolved: 1585 rows, 795 columns, 4755 nonzeros Variable types: 0 continuous, 795 integer (795 binary) Root relaxation: objective 0.000000e+00, 216 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 0 203 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3559 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 19:52:12 2012 Optimize a model with 2080 rows, 895 columns and 6340 nonzeros Presolve time: 0.01s Presolved: 2080 rows, 895 columns, 6340 nonzeros Variable types: 0 continuous, 895 integer (895 binary) Root relaxation: objective 0.000000e+00, 234 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 0 192 - 0.00000 - - 0s 0 0 0.00000 0 190 - 0.00000 - - 0s 0 0 0.00000 0 180 - 0.00000 - - 0s 0 0 0.00000 0 291 - 0.00000 - - 0s 0 0 0.00000 0 242 - 0.00000 - - 0s 0 0 0.00000 0 200 - 0.00000 - - 1s 0 0 0.00000 0 241 - 0.00000 - - 1s 0 0 0.00000 0 269 - 0.00000 - - 1s 0 0 0.00000 0 266 - 0.00000 - - 1s 0 0 0.00000 0 264 - 0.00000 - - 1s 0 0 0.00000 0 268 - 0.00000 - - 2s 0 0 0.00000 0 268 - 0.00000 - - 2s 0 2 0.00000 0 268 - 0.00000 - - 2s Cutting planes: Clique: 4 Zero half: 19 Explored 53 nodes (30019 simplex iterations) in 3.06 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 19:52:16 2012 Optimize a model with 2575 rows, 995 columns and 7925 nonzeros Presolve time: 0.01s Presolved: 2575 rows, 995 columns, 7925 nonzeros Variable types: 0 continuous, 995 integer (995 binary) Root relaxation: objective 0.000000e+00, 209 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 0 145 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (2524 simplex iterations) in 0.13 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