current bounds on the number of colors: 0 -- 98 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:03 2012 Optimize a model with 2597 rows, 4853 columns and 12299 nonzeros Presolve removed 30 rows and 1470 columns Presolve time: 0.03s Presolved: 2567 rows, 3383 columns, 10829 nonzeros Variable types: 0 continuous, 3383 integer (3383 binary) Root relaxation: objective 0.000000e+00, 111 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 (111 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 -- 49 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:03 2012 Optimize a model with 1322 rows, 2403 columns and 6024 nonzeros Presolve removed 30 rows and 720 columns Presolve time: 0.01s Presolved: 1292 rows, 1683 columns, 5304 nonzeros Variable types: 0 continuous, 1683 integer (1683 binary) Root relaxation: objective 0.000000e+00, 111 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 (111 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 -- 24 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:04 2012 Optimize a model with 710 rows, 1227 columns and 3012 nonzeros Presolve removed 30 rows and 360 columns Presolve time: 0.00s Presolved: 680 rows, 867 columns, 2652 nonzeros Variable types: 0 continuous, 867 integer (867 binary) Root relaxation: objective 0.000000e+00, 108 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 (108 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 -- 12 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:04 2012 Optimize a model with 404 rows, 639 columns and 1506 nonzeros Presolve removed 30 rows and 180 columns Presolve time: 0.00s Presolved: 374 rows, 459 columns, 1326 nonzeros Variable types: 0 continuous, 459 integer (459 binary) Root relaxation: objective 0.000000e+00, 102 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 (102 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:04 2012 Optimize a model with 251 rows, 345 columns and 753 nonzeros Presolve removed 30 rows and 90 columns Presolve time: 0.00s Presolved: 221 rows, 255 columns, 663 nonzeros Variable types: 0 continuous, 255 integer (255 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 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:04 2012 Optimize a model with 149 rows, 149 columns and 251 nonzeros Presolve removed 149 rows and 149 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 16:15:04 2012 Optimize a model with 200 rows, 247 columns and 502 nonzeros Presolve removed 110 rows and 146 columns Presolve time: 0.00s Presolved: 90 rows, 101 columns, 270 nonzeros Variable types: 0 continuous, 101 integer (101 binary) Root relaxation: objective 0.000000e+00, 41 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 (41 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: 2