current bounds on the number of colors: 0 -- 155 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:20:39 2012 Optimize a model with 8240 rows, 12040 columns and 36190 nonzeros Presolve removed 38 rows and 2926 columns Presolve time: 0.11s Presolved: 8202 rows, 9114 columns, 33264 nonzeros Variable types: 0 continuous, 9114 integer (9114 binary) Root relaxation: objective 0.000000e+00, 193 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 (193 simplex iterations) in 0.12 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 -- 77 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:20:39 2012 Optimize a model with 4145 rows, 5995 columns and 17860 nonzeros Presolve removed 38 rows and 1444 columns Presolve time: 0.04s Presolved: 4107 rows, 4551 columns, 16416 nonzeros Variable types: 0 continuous, 4551 integer (4551 binary) Root relaxation: objective 0.000000e+00, 193 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 (193 simplex iterations) in 0.04 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 -- 38 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:20:39 2012 Optimize a model with 2150 rows, 3050 columns and 8930 nonzeros Presolve removed 38 rows and 722 columns Presolve time: 0.01s Presolved: 2112 rows, 2328 columns, 8208 nonzeros Variable types: 0 continuous, 2328 integer (2328 binary) Root relaxation: objective 0.000000e+00, 193 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 (193 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 -- 19 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:20:39 2012 Optimize a model with 1100 rows, 1500 columns and 4230 nonzeros Presolve removed 38 rows and 342 columns Presolve time: 0.00s Presolved: 1062 rows, 1158 columns, 3888 nonzeros Variable types: 0 continuous, 1158 integer (1158 binary) Root relaxation: objective 0.000000e+00, 192 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 (192 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 -- 9 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:20:39 2012 Optimize a model with 575 rows, 725 columns and 1880 nonzeros Presolve removed 38 rows and 152 columns Presolve time: 0.00s Presolved: 537 rows, 573 columns, 1728 nonzeros Variable types: 0 continuous, 573 integer (573 binary) Root relaxation: objective 0.000000e+00, 181 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 (181 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 -- 4 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:20:39 2012 Optimize a model with 365 rows, 415 columns and 940 nonzeros Presolve removed 165 rows and 208 columns Presolve time: 0.00s Presolved: 200 rows, 207 columns, 600 nonzeros Variable types: 0 continuous, 207 integer (207 binary) Root relaxation: objective 0.000000e+00, 99 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 (99 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 -- 2 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:20:39 2012 Optimize a model with 260 rows, 260 columns and 470 nonzeros Presolve removed 260 rows and 260 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 - optimal solution found: number of colors: 2