current bounds on the number of colors: 0 -- 101 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:53:04 2012 Optimize a model with 25201 rows, 5552 columns and 80350 nonzeros Presolve time: 0.13s Presolved: 25201 rows, 5552 columns, 80350 nonzeros Variable types: 0 continuous, 5552 integer (5552 binary) Root relaxation: objective 0.000000e+00, 302 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 (528 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 19:53:05 2012 Optimize a model with 12651 rows, 3027 columns and 40175 nonzeros Presolve time: 0.05s Presolved: 12651 rows, 3027 columns, 40175 nonzeros Variable types: 0 continuous, 3027 integer (3027 binary) Root relaxation: objective 0.000000e+00, 234 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 (433 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 19:53:05 2012 Optimize a model with 6125 rows, 1714 columns and 19284 nonzeros Presolve time: 0.02s Presolved: 6125 rows, 1714 columns, 19284 nonzeros Variable types: 0 continuous, 1714 integer (1714 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 (393 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 19:53:05 2012 Optimize a model with 3113 rows, 1108 columns and 9642 nonzeros Presolve time: 0.01s Presolved: 3113 rows, 1108 columns, 9642 nonzeros Variable types: 0 continuous, 1108 integer (1108 binary) Root relaxation: objective 0.000000e+00, 219 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 (1083 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 19:53:05 2012 Optimize a model with 1607 rows, 805 columns and 4821 nonzeros Presolve time: 0.00s Presolved: 1607 rows, 805 columns, 4821 nonzeros Variable types: 0 continuous, 805 integer (805 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 0 198 - 0.00000 - - 0s 0 0 0.00000 0 214 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (2523 simplex iterations) in 0.20 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 19:53:05 2012 Optimize a model with 2109 rows, 906 columns and 6428 nonzeros Presolve time: 0.01s Presolved: 2109 rows, 906 columns, 6428 nonzeros Variable types: 0 continuous, 906 integer (906 binary) Root relaxation: objective 0.000000e+00, 219 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 0 202 - 0.00000 - - 0s 0 0 0.00000 0 190 - 0.00000 - - 0s 0 0 0.00000 0 224 - 0.00000 - - 0s 0 0 0.00000 0 274 - 0.00000 - - 0s 0 0 0.00000 0 256 - 0.00000 - - 0s 0 0 0.00000 0 249 - 0.00000 - - 1s 0 0 0.00000 0 262 - 0.00000 - - 1s 0 0 0.00000 0 279 - 0.00000 - - 1s 0 0 0.00000 0 279 - 0.00000 - - 1s 0 2 0.00000 0 279 - 0.00000 - - 1s Cutting planes: Clique: 3 Zero half: 22 Explored 25 nodes (19919 simplex iterations) in 2.07 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 19:53:07 2012 Optimize a model with 2611 rows, 1007 columns and 8035 nonzeros Presolve time: 0.01s Presolved: 2611 rows, 1007 columns, 8035 nonzeros Variable types: 0 continuous, 1007 integer (1007 binary) Root relaxation: objective 0.000000e+00, 220 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 0 125 - 0.00000 - - 0s 0 0 0.00000 0 108 - 0.00000 - - 0s * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (3790 simplex iterations) in 0.22 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