current bounds on the number of colors: 0 -- 229 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:39:43 2012 Optimize a model with 31009 rows, 26376 columns and 118446 nonzeros Presolve removed 18 rows and 2052 columns Presolve time: 0.15s Presolved: 30991 rows, 24324 columns, 116394 nonzeros Variable types: 0 continuous, 24324 integer (24324 binary) Root relaxation: objective 0.000000e+00, 390 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 (390 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 -- 114 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:39:44 2012 Optimize a model with 15619 rows, 13323 columns and 59223 nonzeros Presolve removed 18 rows and 1026 columns Presolve time: 0.12s Presolved: 15601 rows, 12297 columns, 58197 nonzeros Variable types: 0 continuous, 12297 integer (12297 binary) Root relaxation: objective 0.000000e+00, 390 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 (390 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% current bounds on the number of colors: 0 -- 57 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:39:44 2012 Optimize a model with 7789 rows, 6682 columns and 29092 nonzeros Presolve removed 18 rows and 504 columns Presolve time: 0.05s Presolved: 7771 rows, 6178 columns, 28588 nonzeros Variable types: 0 continuous, 6178 integer (6178 binary) Root relaxation: objective 0.000000e+00, 387 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 (387 simplex iterations) in 0.06 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 -- 28 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:39:44 2012 Optimize a model with 4009 rows, 3476 columns and 14546 nonzeros Presolve removed 18 rows and 252 columns Presolve time: 0.02s Presolved: 3991 rows, 3224 columns, 14294 nonzeros Variable types: 0 continuous, 3224 integer (3224 binary) Root relaxation: objective 0.000000e+00, 399 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 (399 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 -- 14 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:39:44 2012 Optimize a model with 2119 rows, 1873 columns and 7273 nonzeros Presolve removed 18 rows and 126 columns Presolve time: 0.01s Presolved: 2101 rows, 1747 columns, 7147 nonzeros Variable types: 0 continuous, 1747 integer (1747 binary) Root relaxation: objective 0.000000e+00, 393 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 0.01 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 -- 7 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:39:44 2012 Optimize a model with 1039 rows, 957 columns and 3117 nonzeros Presolve removed 18 rows and 54 columns Presolve time: 0.00s Presolved: 1021 rows, 903 columns, 3063 nonzeros Variable types: 0 continuous, 903 integer (903 binary) Root relaxation: objective 0.000000e+00, 392 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 (537 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 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:39:44 2012 Optimize a model with 499 rows, 499 columns and 1039 nonzeros Presolve removed 499 rows and 499 columns Presolve time: 0.00s Explored 0 nodes (0 simplex iterations) in 0.00 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: 1 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:39:45 2012 Optimize a model with 769 rows, 728 columns and 2078 nonzeros Presolve removed 235 rows and 256 columns Presolve time: 0.00s Presolved: 534 rows, 472 columns, 1602 nonzeros Variable types: 0 continuous, 472 integer (472 binary) Root relaxation: objective 0.000000e+00, 236 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 0 205 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (772 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound 1.000000000000e+00, gap - optimal solution found: number of colors: 3