current bounds on the number of colors: 0 -- 176 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:20 2012 Optimize a model with 13816 rows, 15643 columns and 56408 nonzeros Presolve removed 34 rows and 2992 columns Presolve time: 0.11s Presolved: 13782 rows, 12651 columns, 53416 nonzeros Variable types: 0 continuous, 12651 integer (12651 binary) Root relaxation: objective 0.000000e+00, 263 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 (263 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 -- 88 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:20 2012 Optimize a model with 6996 rows, 7899 columns and 28204 nonzeros Presolve removed 34 rows and 1496 columns Presolve time: 0.06s Presolved: 6962 rows, 6403 columns, 26708 nonzeros Variable types: 0 continuous, 6403 integer (6403 binary) Root relaxation: objective 0.000000e+00, 255 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 (255 simplex iterations) in 0.07 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 -- 44 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:20 2012 Optimize a model with 3586 rows, 4027 columns and 14102 nonzeros Presolve removed 34 rows and 748 columns Presolve time: 0.02s Presolved: 3552 rows, 3279 columns, 13354 nonzeros Variable types: 0 continuous, 3279 integer (3279 binary) Root relaxation: objective 0.000000e+00, 256 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 (256 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 -- 22 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:20 2012 Optimize a model with 1881 rows, 2091 columns and 7051 nonzeros Presolve removed 34 rows and 374 columns Presolve time: 0.01s Presolved: 1847 rows, 1717 columns, 6677 nonzeros Variable types: 0 continuous, 1717 integer (1717 binary) Root relaxation: objective 0.000000e+00, 260 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 (260 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 -- 11 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:21 2012 Optimize a model with 951 rows, 1035 columns and 3205 nonzeros Presolve removed 34 rows and 170 columns Presolve time: 0.00s Presolved: 917 rows, 865 columns, 3035 nonzeros Variable types: 0 continuous, 865 integer (865 binary) Root relaxation: objective 0.000000e+00, 237 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 (237 simplex iterations) in 0.00 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:21 2012 Optimize a model with 486 rows, 507 columns and 1282 nonzeros Presolve removed 182 rows and 219 columns Presolve time: 0.00s Presolved: 304 rows, 288 columns, 912 nonzeros Variable types: 0 continuous, 288 integer (288 binary) Root relaxation: objective 0.000000e+00, 150 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 0 123 - 0.00000 - - 0s Explored 0 nodes (470 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound 1.000000000000e+00, gap - current bounds on the number of colors: 2 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:21 2012 Optimize a model with 641 rows, 683 columns and 1923 nonzeros Presolve removed 34 rows and 102 columns Presolve time: 0.00s Presolved: 607 rows, 581 columns, 1821 nonzeros Variable types: 0 continuous, 581 integer (581 binary) Root relaxation: objective 0.000000e+00, 219 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 (219 simplex iterations) in 0.00 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: 3