current bounds on the number of colors: 0 -- 218 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:35:42 2012 Optimize a model with 27141 rows, 24009 columns and 104531 nonzeros Presolve removed 23 rows and 2507 columns Presolve time: 0.14s Presolved: 27118 rows, 21502 columns, 102024 nonzeros Variable types: 0 continuous, 21502 integer (21502 binary) Root relaxation: objective 0.000000e+00, 370 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 (370 simplex iterations) in 0.16 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 -- 109 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:35:43 2012 Optimize a model with 13556 rows, 12019 columns and 51786 nonzeros Presolve removed 23 rows and 1242 columns Presolve time: 0.13s Presolved: 13533 rows, 10777 columns, 50544 nonzeros Variable types: 0 continuous, 10777 integer (10777 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 -- 54 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:35:43 2012 Optimize a model with 6887 rows, 6133 columns and 25893 nonzeros Presolve removed 23 rows and 621 columns Presolve time: 0.04s Presolved: 6864 rows, 5512 columns, 25272 nonzeros Variable types: 0 continuous, 5512 integer (5512 binary) Root relaxation: objective 0.000000e+00, 372 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 (372 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 16:35:43 2012 Optimize a model with 3429 rows, 3081 columns and 12467 nonzeros Presolve removed 23 rows and 299 columns Presolve time: 0.02s Presolved: 3406 rows, 2782 columns, 12168 nonzeros Variable types: 0 continuous, 2782 integer (2782 binary) Root relaxation: objective 0.000000e+00, 366 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 (563 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 16:35:43 2012 Optimize a model with 1700 rows, 1555 columns and 5754 nonzeros Presolve removed 23 rows and 138 columns Presolve time: 0.01s Presolved: 1677 rows, 1417 columns, 5616 nonzeros Variable types: 0 continuous, 1417 integer (1417 binary) Root relaxation: objective 0.000000e+00, 371 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 (541 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 16:35:44 2012 Optimize a model with 959 rows, 901 columns and 2877 nonzeros Presolve removed 23 rows and 69 columns Presolve time: 0.00s Presolved: 936 rows, 832 columns, 2808 nonzeros Variable types: 0 continuous, 832 integer (832 binary) Root relaxation: objective 0.000000e+00, 364 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 (364 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 16:35:44 2012 Optimize a model with 465 rows, 465 columns and 959 nonzeros Presolve removed 465 rows and 465 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 16:35:44 2012 Optimize a model with 712 rows, 683 columns and 1918 nonzeros Presolve removed 226 rows and 253 columns Presolve time: 0.00s Presolved: 486 rows, 430 columns, 1458 nonzeros Variable types: 0 continuous, 430 integer (430 binary) Root relaxation: objective 0.000000e+00, 214 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 0 187 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (689 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