current bounds on the number of colors: 0 -- 223 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:37:33 2012 Optimize a model with 30304 rows, 25024 columns and 114996 nonzeros Presolve removed 17 rows and 1887 columns Presolve time: 0.14s Presolved: 30287 rows, 23137 columns, 113109 nonzeros Variable types: 0 continuous, 23137 integer (23137 binary) Root relaxation: objective 0.000000e+00, 387 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 (583 simplex iterations) in 0.20 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 -- 111 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:37:33 2012 Optimize a model with 15128 rows, 12536 columns and 56980 nonzeros Presolve removed 17 rows and 935 columns Presolve time: 0.13s Presolved: 15111 rows, 11601 columns, 56045 nonzeros Variable types: 0 continuous, 11601 integer (11601 binary) Root relaxation: objective 0.000000e+00, 391 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 (607 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 -- 55 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:37:34 2012 Optimize a model with 7540 rows, 6292 columns and 27972 nonzeros Presolve removed 17 rows and 459 columns Presolve time: 0.04s Presolved: 7523 rows, 5833 columns, 27513 nonzeros Variable types: 0 continuous, 5833 integer (5833 binary) Root relaxation: objective 0.000000e+00, 392 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 (585 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 -- 27 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:37:34 2012 Optimize a model with 3746 rows, 3170 columns and 13468 nonzeros Presolve removed 17 rows and 221 columns Presolve time: 0.02s Presolved: 3729 rows, 2949 columns, 13247 nonzeros Variable types: 0 continuous, 2949 integer (2949 binary) Root relaxation: objective 0.000000e+00, 402 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 (612 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 -- 13 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:37:34 2012 Optimize a model with 1849 rows, 1609 columns and 6216 nonzeros Presolve removed 17 rows and 102 columns Presolve time: 0.01s Presolved: 1832 rows, 1507 columns, 6114 nonzeros Variable types: 0 continuous, 1507 integer (1507 binary) Root relaxation: objective 0.000000e+00, 397 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 (567 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 16:37:34 2012 Optimize a model with 1036 rows, 940 columns and 3108 nonzeros Presolve removed 17 rows and 51 columns Presolve time: 0.00s Presolved: 1019 rows, 889 columns, 3057 nonzeros Variable types: 0 continuous, 889 integer (889 binary) Root relaxation: objective 0.000000e+00, 405 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 (603 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 16:37:34 2012 Optimize a model with 494 rows, 494 columns and 1036 nonzeros Presolve removed 494 rows and 494 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 16:37:34 2012 Optimize a model with 765 rows, 717 columns and 2072 nonzeros Presolve removed 227 rows and 246 columns Presolve time: 0.00s Presolved: 538 rows, 471 columns, 1614 nonzeros Variable types: 0 continuous, 471 integer (471 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 0.00000 0 192 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (745 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