current bounds on the number of colors: 0 -- 101 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:52:37 2012 Optimize a model with 25051 rows, 5549 columns and 79900 nonzeros Presolve time: 0.13s Presolved: 25051 rows, 5549 columns, 79900 nonzeros Variable types: 0 continuous, 5549 integer (5549 binary) Root relaxation: objective 0.000000e+00, 290 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 (476 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 19:52:37 2012 Optimize a model with 12576 rows, 3024 columns and 39950 nonzeros Presolve time: 0.05s Presolved: 12576 rows, 3024 columns, 39950 nonzeros Variable types: 0 continuous, 3024 integer (3024 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 (412 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 19:52:37 2012 Optimize a model with 6089 rows, 1711 columns and 19176 nonzeros Presolve time: 0.02s Presolved: 6089 rows, 1711 columns, 19176 nonzeros Variable types: 0 continuous, 1711 integer (1711 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 (416 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 19:52:37 2012 Optimize a model with 3095 rows, 1105 columns and 9588 nonzeros Presolve time: 0.01s Presolved: 3095 rows, 1105 columns, 9588 nonzeros Variable types: 0 continuous, 1105 integer (1105 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 (807 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 19:52:38 2012 Optimize a model with 1598 rows, 802 columns and 4794 nonzeros Presolve time: 0.00s Presolved: 1598 rows, 802 columns, 4794 nonzeros Variable types: 0 continuous, 802 integer (802 binary) Root relaxation: objective 0.000000e+00, 218 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 0 168 - 0.00000 - - 0s 0 0 0.00000 0 200 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (2643 simplex iterations) in 0.22 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 19:52:38 2012 Optimize a model with 2097 rows, 903 columns and 6392 nonzeros Presolve time: 0.01s Presolved: 2097 rows, 903 columns, 6392 nonzeros Variable types: 0 continuous, 903 integer (903 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 0 192 - 0.00000 - - 0s 0 0 0.00000 0 158 - 0.00000 - - 0s 0 0 0.00000 0 180 - 0.00000 - - 0s 0 0 0.00000 0 284 - 0.00000 - - 0s 0 0 0.00000 0 154 - 0.00000 - - 0s 0 0 0.00000 0 278 - 0.00000 - - 0s 0 0 0.00000 0 267 - 0.00000 - - 1s 0 0 0.00000 0 264 - 0.00000 - - 1s 0 0 0.00000 0 255 - 0.00000 - - 1s 0 0 0.00000 0 255 - 0.00000 - - 1s 0 0 0.00000 0 255 - 0.00000 - - 1s 0 2 0.00000 0 255 - 0.00000 - - 2s Cutting planes: Gomory: 1 Clique: 7 Zero half: 26 Explored 178 nodes (42036 simplex iterations) in 3.55 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 19:52:41 2012 Optimize a model with 2596 rows, 1004 columns and 7990 nonzeros Presolve time: 0.01s Presolved: 2596 rows, 1004 columns, 7990 nonzeros Variable types: 0 continuous, 1004 integer (1004 binary) Root relaxation: objective 0.000000e+00, 225 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 82 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1737 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% optimal solution found: number of colors: 5