current bounds on the number of colors: 0 -- 99 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:24:20 2012 Optimize a model with 12153 rows, 5097 columns and 41013 nonzeros Presolve removed 1 rows and 49 columns Presolve time: 0.08s Presolved: 12152 rows, 5048 columns, 40964 nonzeros Variable types: 0 continuous, 5048 integer (5048 binary) Root relaxation: objective 0.000000e+00, 254 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 (410 simplex iterations) in 0.11 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 -- 49 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:24:20 2012 Optimize a model with 6003 rows, 2622 columns and 20088 nonzeros Presolve removed 1 rows and 24 columns Presolve time: 0.03s Presolved: 6002 rows, 2598 columns, 20064 nonzeros Variable types: 0 continuous, 2598 integer (2598 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (381 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 -- 24 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:24:20 2012 Optimize a model with 3051 rows, 1434 columns and 10044 nonzeros Presolve removed 1 rows and 12 columns Presolve time: 0.01s Presolved: 3050 rows, 1422 columns, 10032 nonzeros Variable types: 0 continuous, 1422 integer (1422 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (358 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 -- 12 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:24:20 2012 Optimize a model with 1575 rows, 840 columns and 5022 nonzeros Presolve removed 1 rows and 6 columns Presolve time: 0.00s Presolved: 1574 rows, 834 columns, 5016 nonzeros Variable types: 0 continuous, 834 integer (834 binary) Root relaxation: objective 0.000000e+00, 231 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 (382 simplex iterations) in 0.01 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 Fri Dec 14 18:24:20 2012 Optimize a model with 837 rows, 543 columns and 2511 nonzeros Presolve removed 1 rows and 3 columns Presolve time: 0.00s Presolved: 836 rows, 540 columns, 2508 nonzeros Variable types: 0 continuous, 540 integer (540 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 0 170 - 0.00000 - - 0s 0 0 0.00000 0 158 - 0.00000 - - 0s 0 0 0.00000 0 172 - 0.00000 - - 0s 0 0 0.00000 0 202 - 0.00000 - - 0s 0 0 0.00000 0 208 - 0.00000 - - 0s 0 0 0.00000 0 155 - 0.00000 - - 0s 0 0 0.00000 0 203 - 0.00000 - - 0s 0 0 0.00000 0 207 - 0.00000 - - 0s 0 0 0.00000 0 207 - 0.00000 - - 0s 0 2 0.00000 0 207 - 0.00000 - - 0s Cutting planes: Zero half: 20 Explored 10 nodes (7625 simplex iterations) in 0.42 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: 3 -- 6 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:24:21 2012 Optimize a model with 1083 rows, 642 columns and 3348 nonzeros Presolve removed 1 rows and 4 columns Presolve time: 0.00s Presolved: 1082 rows, 638 columns, 3344 nonzeros Variable types: 0 continuous, 638 integer (638 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (432 simplex iterations) in 0.01 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: 4