current bounds on the number of colors: 0 -- 242 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:44:54 2012 Optimize a model with 38841 rows, 29601 columns and 145079 nonzeros Presolve removed 19 rows and 2299 columns Presolve time: 0.19s Presolved: 38822 rows, 27302 columns, 142780 nonzeros Variable types: 0 continuous, 27302 integer (27302 binary) Root relaxation: objective 0.000000e+00, 427 iterations, 0.02 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 (427 simplex iterations) in 0.22 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 -- 121 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:44:55 2012 Optimize a model with 19382 rows, 14839 columns and 71940 nonzeros Presolve removed 19 rows and 1140 columns Presolve time: 0.13s Presolved: 19363 rows, 13699 columns, 70800 nonzeros Variable types: 0 continuous, 13699 integer (13699 binary) Root relaxation: objective 0.000000e+00, 427 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 (427 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 -- 60 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:44:55 2012 Optimize a model with 9812 rows, 7579 columns and 35970 nonzeros Presolve removed 19 rows and 570 columns Presolve time: 0.06s Presolved: 9793 rows, 7009 columns, 35400 nonzeros Variable types: 0 continuous, 7009 integer (7009 binary) Root relaxation: objective 0.000000e+00, 425 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 (425 simplex iterations) in 0.07 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 -- 30 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:44:56 2012 Optimize a model with 5027 rows, 3949 columns and 17985 nonzeros Presolve removed 19 rows and 285 columns Presolve time: 0.02s Presolved: 5008 rows, 3664 columns, 17700 nonzeros Variable types: 0 continuous, 3664 integer (3664 binary) Root relaxation: objective 0.000000e+00, 459 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 (459 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 -- 15 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:44:56 2012 Optimize a model with 2475 rows, 2013 columns and 8393 nonzeros Presolve removed 19 rows and 133 columns Presolve time: 0.01s Presolved: 2456 rows, 1880 columns, 8260 nonzeros Variable types: 0 continuous, 1880 integer (1880 binary) Root relaxation: objective 0.000000e+00, 419 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 (419 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 -- 7 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:44:56 2012 Optimize a model with 1199 rows, 1045 columns and 3597 nonzeros Presolve removed 19 rows and 57 columns Presolve time: 0.00s Presolved: 1180 rows, 988 columns, 3540 nonzeros Variable types: 0 continuous, 988 integer (988 binary) Root relaxation: objective 0.000000e+00, 491 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 (837 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 16:44:56 2012 Optimize a model with 561 rows, 561 columns and 1199 nonzeros Presolve removed 561 rows and 561 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 16:44:56 2012 Optimize a model with 880 rows, 803 columns and 2398 nonzeros Presolve removed 244 rows and 264 columns Presolve time: 0.00s Presolved: 636 rows, 539 columns, 1908 nonzeros Variable types: 0 continuous, 539 integer (539 binary) Root relaxation: objective 0.000000e+00, 254 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 0 218 - 0.00000 - - 0s Explored 0 nodes (852 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