current bounds on the number of colors: 0 -- 230 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:39:55 2012 Optimize a model with 30705 rows, 26715 columns and 117875 nonzeros Presolve removed 26 rows and 2990 columns Presolve time: 0.15s Presolved: 30679 rows, 23725 columns, 114885 nonzeros Variable types: 0 continuous, 23725 integer (23725 binary) Root relaxation: objective 0.000000e+00, 405 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 (405 simplex iterations) in 0.18 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 -- 115 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:39:55 2012 Optimize a model with 15335 rows, 13375 columns and 58425 nonzeros Presolve removed 26 rows and 1482 columns Presolve time: 0.12s Presolved: 15309 rows, 11893 columns, 56943 nonzeros Variable types: 0 continuous, 11893 integer (11893 binary) Root relaxation: objective 0.000000e+00, 402 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 (402 simplex iterations) in 0.13 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 -- 57 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:39:56 2012 Optimize a model with 7650 rows, 6705 columns and 28700 nonzeros Presolve removed 26 rows and 728 columns Presolve time: 0.05s Presolved: 7624 rows, 5977 columns, 27972 nonzeros Variable types: 0 continuous, 5977 integer (5977 binary) Root relaxation: objective 0.000000e+00, 394 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 (394 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 -- 28 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:39:56 2012 Optimize a model with 3940 rows, 3485 columns and 14350 nonzeros Presolve removed 26 rows and 364 columns Presolve time: 0.02s Presolved: 3914 rows, 3121 columns, 13986 nonzeros Variable types: 0 continuous, 3121 integer (3121 binary) Root relaxation: objective 0.000000e+00, 393 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 (393 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 -- 14 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:39:56 2012 Optimize a model with 2085 rows, 1875 columns and 7175 nonzeros Presolve removed 26 rows and 182 columns Presolve time: 0.01s Presolved: 2059 rows, 1693 columns, 6993 nonzeros Variable types: 0 continuous, 1693 integer (1693 binary) Root relaxation: objective 0.000000e+00, 380 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 (380 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 16:39:56 2012 Optimize a model with 1025 rows, 955 columns and 3075 nonzeros Presolve removed 26 rows and 78 columns Presolve time: 0.00s Presolved: 999 rows, 877 columns, 2997 nonzeros Variable types: 0 continuous, 877 integer (877 binary) Root relaxation: objective 0.000000e+00, 407 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 (833 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 16:39:56 2012 Optimize a model with 495 rows, 495 columns and 1025 nonzeros Presolve removed 495 rows and 495 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 16:39:56 2012 Optimize a model with 760 rows, 725 columns and 2050 nonzeros Presolve removed 234 rows and 262 columns Presolve time: 0.00s Presolved: 526 rows, 463 columns, 1578 nonzeros Variable types: 0 continuous, 463 integer (463 binary) Root relaxation: objective 0.000000e+00, 222 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 0 197 - 0.00000 - - 0s Explored 0 nodes (717 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