current bounds on the number of colors: 0 -- 197 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:29:08 2012 Optimize a model with 21561 rows, 19524 columns and 83398 nonzeros Presolve removed 30 rows and 2940 columns Presolve time: 0.13s Presolved: 21531 rows, 16584 columns, 80458 nonzeros Variable types: 0 continuous, 16584 integer (16584 binary) Root relaxation: objective 0.000000e+00, 310 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 (310 simplex iterations) in 0.15 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 -- 98 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:29:09 2012 Optimize a model with 10879 rows, 9871 columns and 41699 nonzeros Presolve removed 30 rows and 1470 columns Presolve time: 0.09s Presolved: 10849 rows, 8401 columns, 40229 nonzeros Variable types: 0 continuous, 8401 integer (8401 binary) Root relaxation: objective 0.000000e+00, 309 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 (309 simplex iterations) in 0.10 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 16:29:09 2012 Optimize a model with 5429 rows, 4946 columns and 20424 nonzeros Presolve removed 30 rows and 720 columns Presolve time: 0.03s Presolved: 5399 rows, 4226 columns, 19704 nonzeros Variable types: 0 continuous, 4226 integer (4226 binary) Root relaxation: objective 0.000000e+00, 309 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 (309 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 -- 24 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:29:09 2012 Optimize a model with 2813 rows, 2582 columns and 10212 nonzeros Presolve removed 30 rows and 360 columns Presolve time: 0.01s Presolved: 2783 rows, 2222 columns, 9852 nonzeros Variable types: 0 continuous, 2222 integer (2222 binary) Root relaxation: objective 0.000000e+00, 330 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 (330 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 -- 12 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:29:09 2012 Optimize a model with 1505 rows, 1400 columns and 5106 nonzeros Presolve removed 30 rows and 180 columns Presolve time: 0.01s Presolved: 1475 rows, 1220 columns, 4926 nonzeros Variable types: 0 continuous, 1220 integer (1220 binary) Root relaxation: objective 0.000000e+00, 307 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 (439 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 16:29:09 2012 Optimize a model with 851 rows, 809 columns and 2553 nonzeros Presolve removed 30 rows and 90 columns Presolve time: 0.00s Presolved: 821 rows, 719 columns, 2463 nonzeros Variable types: 0 continuous, 719 integer (719 binary) Root relaxation: objective 0.000000e+00, 314 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 (538 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 16:29:09 2012 Optimize a model with 415 rows, 415 columns and 851 nonzeros Presolve removed 415 rows and 415 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 16:29:09 2012 Optimize a model with 633 rows, 612 columns and 1702 nonzeros Presolve removed 203 rows and 236 columns Presolve time: 0.00s Presolved: 430 rows, 376 columns, 1290 nonzeros Variable types: 0 continuous, 376 integer (376 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 0.00000 0 161 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (618 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