current bounds on the number of colors: 0 -- 100 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:51:57 2012 Optimize a model with 25000 rows, 5498 columns and 79700 nonzeros Presolve time: 0.13s Presolved: 25000 rows, 5498 columns, 79700 nonzeros Variable types: 0 continuous, 5498 integer (5498 binary) Root relaxation: objective 0.000000e+00, 280 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 (471 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 19:51:57 2012 Optimize a model with 12550 rows, 2998 columns and 39850 nonzeros Presolve time: 0.05s Presolved: 12550 rows, 2998 columns, 39850 nonzeros Variable types: 0 continuous, 2998 integer (2998 binary) Root relaxation: objective 0.000000e+00, 211 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 (404 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 19:51:57 2012 Optimize a model with 6076 rows, 1698 columns and 19128 nonzeros Presolve time: 0.02s Presolved: 6076 rows, 1698 columns, 19128 nonzeros Variable types: 0 continuous, 1698 integer (1698 binary) Root relaxation: objective 0.000000e+00, 212 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 (402 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 19:51:58 2012 Optimize a model with 3088 rows, 1098 columns and 9564 nonzeros Presolve time: 0.01s Presolved: 3088 rows, 1098 columns, 9564 nonzeros Variable types: 0 continuous, 1098 integer (1098 binary) Root relaxation: objective 0.000000e+00, 213 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 90 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1257 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 19:51:58 2012 Optimize a model with 1594 rows, 798 columns and 4782 nonzeros Presolve time: 0.00s Presolved: 1594 rows, 798 columns, 4782 nonzeros Variable types: 0 continuous, 798 integer (798 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 0 200 - 0.00000 - - 0s 0 0 0.00000 0 200 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (2656 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 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:51:58 2012 Optimize a model with 2092 rows, 898 columns and 6376 nonzeros Presolve time: 0.01s Presolved: 2092 rows, 898 columns, 6376 nonzeros Variable types: 0 continuous, 898 integer (898 binary) Root relaxation: objective 0.000000e+00, 215 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 0 188 - 0.00000 - - 0s 0 0 0.00000 0 166 - 0.00000 - - 0s 0 0 0.00000 0 176 - 0.00000 - - 0s 0 0 0.00000 0 283 - 0.00000 - - 0s 0 0 0.00000 0 216 - 0.00000 - - 0s 0 0 0.00000 0 181 - 0.00000 - - 1s 0 0 0.00000 0 189 - 0.00000 - - 1s 0 0 0.00000 0 246 - 0.00000 - - 1s 0 0 0.00000 0 240 - 0.00000 - - 1s 0 0 0.00000 0 249 - 0.00000 - - 1s 0 0 0.00000 0 249 - 0.00000 - - 1s 0 2 0.00000 0 249 - 0.00000 - - 2s Cutting planes: Clique: 3 Zero half: 25 Explored 80 nodes (30113 simplex iterations) in 2.78 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 19:52:01 2012 Optimize a model with 2590 rows, 998 columns and 7970 nonzeros Presolve time: 0.01s Presolved: 2590 rows, 998 columns, 7970 nonzeros Variable types: 0 continuous, 998 integer (998 binary) Root relaxation: objective 0.000000e+00, 221 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 0 156 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (2435 simplex iterations) in 0.14 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