current bounds on the number of colors: 0 -- 207 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:00 2012 Optimize a model with 22455 rows, 21537 columns and 88065 nonzeros Presolve removed 24 rows and 2472 columns Presolve time: 0.14s Presolved: 22431 rows, 19065 columns, 85593 nonzeros Variable types: 0 continuous, 19065 integer (19065 binary) Root relaxation: objective 0.000000e+00, 344 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 (344 simplex iterations) in 0.16 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 -- 103 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:00 2012 Optimize a model with 11223 rows, 10773 columns and 43605 nonzeros Presolve removed 24 rows and 1224 columns Presolve time: 0.10s Presolved: 11199 rows, 9549 columns, 42381 nonzeros Variable types: 0 continuous, 9549 integer (9549 binary) Root relaxation: objective 0.000000e+00, 342 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 (342 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 -- 51 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:00 2012 Optimize a model with 5607 rows, 5391 columns and 21375 nonzeros Presolve removed 24 rows and 600 columns Presolve time: 0.03s Presolved: 5583 rows, 4791 columns, 20775 nonzeros Variable types: 0 continuous, 4791 integer (4791 binary) Root relaxation: objective 0.000000e+00, 335 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 (335 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 -- 25 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:01 2012 Optimize a model with 2799 rows, 2700 columns and 10260 nonzeros Presolve removed 24 rows and 288 columns Presolve time: 0.01s Presolved: 2775 rows, 2412 columns, 9972 nonzeros Variable types: 0 continuous, 2412 integer (2412 binary) Root relaxation: objective 0.000000e+00, 335 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 (513 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 16:32:01 2012 Optimize a model with 1503 rows, 1458 columns and 5130 nonzeros Presolve removed 24 rows and 144 columns Presolve time: 0.01s Presolved: 1479 rows, 1314 columns, 4986 nonzeros Variable types: 0 continuous, 1314 integer (1314 binary) Root relaxation: objective 0.000000e+00, 331 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 (331 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 16:32:01 2012 Optimize a model with 855 rows, 837 columns and 2565 nonzeros Presolve removed 24 rows and 72 columns Presolve time: 0.00s Presolved: 831 rows, 765 columns, 2493 nonzeros Variable types: 0 continuous, 765 integer (765 binary) Root relaxation: objective 0.000000e+00, 336 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 (465 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 16:32:01 2012 Optimize a model with 423 rows, 423 columns and 855 nonzeros Presolve removed 423 rows and 423 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 16:32:01 2012 Optimize a model with 639 rows, 630 columns and 1710 nonzeros Presolve removed 209 rows and 234 columns Presolve time: 0.00s Presolved: 430 rows, 396 columns, 1290 nonzeros Variable types: 0 continuous, 396 integer (396 binary) Root relaxation: objective 0.000000e+00, 212 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 0 181 - 0.00000 - - 0s Explored 0 nodes (689 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