current bounds on the number of colors: 0 -- 207 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:05 2012 Optimize a model with 21631 rows, 21529 columns and 85593 nonzeros Presolve removed 33 rows and 3399 columns Presolve time: 0.13s Presolved: 21598 rows, 18130 columns, 82194 nonzeros Variable types: 0 continuous, 18130 integer (18130 binary) Root relaxation: objective 0.000000e+00, 319 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 (319 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 -- 103 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:06 2012 Optimize a model with 10815 rows, 10765 columns and 42381 nonzeros Presolve removed 33 rows and 1683 columns Presolve time: 0.10s Presolved: 10782 rows, 9082 columns, 40698 nonzeros Variable types: 0 continuous, 9082 integer (9082 binary) Root relaxation: objective 0.000000e+00, 322 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 (322 simplex iterations) in 0.11 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 16:32:06 2012 Optimize a model with 5407 rows, 5383 columns and 20775 nonzeros Presolve removed 33 rows and 825 columns Presolve time: 0.03s Presolved: 5374 rows, 4558 columns, 19950 nonzeros Variable types: 0 continuous, 4558 integer (4558 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 (314 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 16:32:06 2012 Optimize a model with 2703 rows, 2692 columns and 9972 nonzeros Presolve removed 33 rows and 396 columns Presolve time: 0.01s Presolved: 2670 rows, 2296 columns, 9576 nonzeros Variable types: 0 continuous, 2296 integer (2296 binary) Root relaxation: objective 0.000000e+00, 318 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 (468 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 16:32:06 2012 Optimize a model with 1455 rows, 1450 columns and 4986 nonzeros Presolve removed 33 rows and 198 columns Presolve time: 0.01s Presolved: 1422 rows, 1252 columns, 4788 nonzeros Variable types: 0 continuous, 1252 integer (1252 binary) Root relaxation: objective 0.000000e+00, 295 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 (295 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 16:32:06 2012 Optimize a model with 831 rows, 829 columns and 2493 nonzeros Presolve removed 33 rows and 99 columns Presolve time: 0.00s Presolved: 798 rows, 730 columns, 2394 nonzeros Variable types: 0 continuous, 730 integer (730 binary) Root relaxation: objective 0.000000e+00, 301 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 (423 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 16:32:06 2012 Optimize a model with 415 rows, 415 columns and 831 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 16:32:06 2012 Optimize a model with 623 rows, 622 columns and 1662 nonzeros Presolve removed 209 rows and 243 columns Presolve time: 0.00s Presolved: 414 rows, 379 columns, 1242 nonzeros Variable types: 0 continuous, 379 integer (379 binary) Root relaxation: objective 0.000000e+00, 185 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 0 172 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (591 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