current bounds on the number of colors: 0 -- 222 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:37:05 2012 Optimize a model with 27861 rows, 24891 columns and 107559 nonzeros Presolve removed 21 rows and 2331 columns Presolve time: 0.14s Presolved: 27840 rows, 22560 columns, 105228 nonzeros Variable types: 0 continuous, 22560 integer (22560 binary) Root relaxation: objective 0.000000e+00, 368 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 (368 simplex iterations) in 0.17 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 -- 111 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:37:05 2012 Optimize a model with 13917 rows, 12459 columns and 53295 nonzeros Presolve removed 21 rows and 1155 columns Presolve time: 0.13s Presolved: 13896 rows, 11304 columns, 52140 nonzeros Variable types: 0 continuous, 11304 integer (11304 binary) Root relaxation: objective 0.000000e+00, 369 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 (369 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% current bounds on the number of colors: 0 -- 55 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:37:06 2012 Optimize a model with 6945 rows, 6243 columns and 26163 nonzeros Presolve removed 21 rows and 567 columns Presolve time: 0.04s Presolved: 6924 rows, 5676 columns, 25596 nonzeros Variable types: 0 continuous, 5676 integer (5676 binary) Root relaxation: objective 0.000000e+00, 369 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 (369 simplex iterations) in 0.05 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 -- 27 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:37:06 2012 Optimize a model with 3459 rows, 3135 columns and 12597 nonzeros Presolve removed 21 rows and 273 columns Presolve time: 0.02s Presolved: 3438 rows, 2862 columns, 12324 nonzeros Variable types: 0 continuous, 2862 integer (2862 binary) Root relaxation: objective 0.000000e+00, 384 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 (577 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 -- 13 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:37:06 2012 Optimize a model with 1716 rows, 1581 columns and 5814 nonzeros Presolve removed 21 rows and 126 columns Presolve time: 0.01s Presolved: 1695 rows, 1455 columns, 5688 nonzeros Variable types: 0 continuous, 1455 integer (1455 binary) Root relaxation: objective 0.000000e+00, 358 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 0.01 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 Sat Dec 15 16:37:06 2012 Optimize a model with 969 rows, 915 columns and 2907 nonzeros Presolve removed 21 rows and 63 columns Presolve time: 0.00s Presolved: 948 rows, 852 columns, 2844 nonzeros Variable types: 0 continuous, 852 integer (852 binary) Root relaxation: objective 0.000000e+00, 383 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 (522 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 16:37:06 2012 Optimize a model with 471 rows, 471 columns and 969 nonzeros Presolve removed 471 rows and 471 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 16:37:06 2012 Optimize a model with 720 rows, 693 columns and 1938 nonzeros Presolve removed 230 rows and 255 columns Presolve time: 0.00s Presolved: 490 rows, 438 columns, 1470 nonzeros Variable types: 0 continuous, 438 integer (438 binary) Root relaxation: objective 0.000000e+00, 230 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 0 193 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (747 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