current bounds on the number of colors: 0 -- 169 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:23:01 2012 Optimize a model with 12937 rows, 14348 columns and 52500 nonzeros Presolve removed 25 rows and 2100 columns Presolve time: 0.12s Presolved: 12912 rows, 12248 columns, 50400 nonzeros Variable types: 0 continuous, 12248 integer (12248 binary) Root relaxation: objective 0.000000e+00, 250 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 (250 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 -- 84 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:23:02 2012 Optimize a model with 6553 rows, 7250 columns and 26250 nonzeros Presolve removed 25 rows and 1050 columns Presolve time: 0.06s Presolved: 6528 rows, 6200 columns, 25200 nonzeros Variable types: 0 continuous, 6200 integer (6200 binary) Root relaxation: objective 0.000000e+00, 251 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 (251 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 -- 42 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:23:02 2012 Optimize a model with 3361 rows, 3701 columns and 13125 nonzeros Presolve removed 25 rows and 525 columns Presolve time: 0.02s Presolved: 3336 rows, 3176 columns, 12600 nonzeros Variable types: 0 continuous, 3176 integer (3176 binary) Root relaxation: objective 0.000000e+00, 251 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 (251 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 -- 21 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:23:02 2012 Optimize a model with 1689 rows, 1842 columns and 6250 nonzeros Presolve removed 25 rows and 250 columns Presolve time: 0.01s Presolved: 1664 rows, 1592 columns, 6000 nonzeros Variable types: 0 continuous, 1592 integer (1592 binary) Root relaxation: objective 0.000000e+00, 254 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 (254 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 -- 10 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:23:02 2012 Optimize a model with 929 rows, 997 columns and 3125 nonzeros Presolve removed 25 rows and 125 columns Presolve time: 0.00s Presolved: 904 rows, 872 columns, 3000 nonzeros Variable types: 0 continuous, 872 integer (872 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (227 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 16:23:02 2012 Optimize a model with 473 rows, 490 columns and 1250 nonzeros Presolve removed 181 rows and 212 columns Presolve time: 0.00s Presolved: 292 rows, 278 columns, 876 nonzeros Variable types: 0 continuous, 278 integer (278 binary) Root relaxation: objective 0.000000e+00, 152 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 0 121 - 0.00000 - - 0s Explored 0 nodes (476 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 - current bounds on the number of colors: 2 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:23:02 2012 Optimize a model with 625 rows, 659 columns and 1875 nonzeros Presolve removed 25 rows and 75 columns Presolve time: 0.00s Presolved: 600 rows, 584 columns, 1800 nonzeros Variable types: 0 continuous, 584 integer (584 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (306 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