current bounds on the number of colors: 0 -- 227 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:38:53 2012 Optimize a model with 29155 rows, 25907 columns and 112435 nonzeros Presolve removed 17 rows and 1921 columns Presolve time: 0.15s Presolved: 29138 rows, 23986 columns, 110514 nonzeros Variable types: 0 continuous, 23986 integer (23986 binary) Root relaxation: objective 0.000000e+00, 391 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 (391 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 -- 113 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:38:54 2012 Optimize a model with 14563 rows, 12968 columns and 55720 nonzeros Presolve removed 17 rows and 952 columns Presolve time: 0.12s Presolved: 14546 rows, 12016 columns, 54768 nonzeros Variable types: 0 continuous, 12016 integer (12016 binary) Root relaxation: objective 0.000000e+00, 392 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 (392 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 -- 56 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:38:54 2012 Optimize a model with 7395 rows, 6612 columns and 27860 nonzeros Presolve removed 17 rows and 476 columns Presolve time: 0.05s Presolved: 7378 rows, 6136 columns, 27384 nonzeros Variable types: 0 continuous, 6136 integer (6136 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 0.06 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 16:38:54 2012 Optimize a model with 3811 rows, 3434 columns and 13930 nonzeros Presolve removed 17 rows and 238 columns Presolve time: 0.02s Presolved: 3794 rows, 3196 columns, 13692 nonzeros Variable types: 0 continuous, 3196 integer (3196 binary) Root relaxation: objective 0.000000e+00, 402 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 (605 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 -- 14 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:38:54 2012 Optimize a model with 2019 rows, 1845 columns and 6965 nonzeros Presolve removed 17 rows and 119 columns Presolve time: 0.01s Presolved: 2002 rows, 1726 columns, 6846 nonzeros Variable types: 0 continuous, 1726 integer (1726 binary) Root relaxation: objective 0.000000e+00, 378 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 (547 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 16:38:54 2012 Optimize a model with 995 rows, 937 columns and 2985 nonzeros Presolve removed 17 rows and 51 columns Presolve time: 0.00s Presolved: 978 rows, 886 columns, 2934 nonzeros Variable types: 0 continuous, 886 integer (886 binary) Root relaxation: objective 0.000000e+00, 395 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 (395 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 16:38:54 2012 Optimize a model with 483 rows, 483 columns and 995 nonzeros Presolve removed 483 rows and 483 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 16:38:54 2012 Optimize a model with 739 rows, 710 columns and 1990 nonzeros Presolve removed 229 rows and 247 columns Presolve time: 0.00s Presolved: 510 rows, 463 columns, 1530 nonzeros Variable types: 0 continuous, 463 integer (463 binary) Root relaxation: objective 0.000000e+00, 227 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 (741 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