current bounds on the number of colors: 0 -- 233 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:06 2012 Optimize a model with 32249 rows, 27304 columns and 123076 nonzeros Presolve removed 15 rows and 1740 columns Presolve time: 0.14s Presolved: 32234 rows, 25564 columns, 121336 nonzeros Variable types: 0 continuous, 25564 integer (25564 binary) Root relaxation: objective 0.000000e+00, 403 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 (403 simplex iterations) in 0.17 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 -- 116 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:06 2012 Optimize a model with 16241 rows, 13790 columns and 61538 nonzeros Presolve removed 15 rows and 870 columns Presolve time: 0.12s Presolved: 16226 rows, 12920 columns, 60668 nonzeros Variable types: 0 continuous, 12920 integer (12920 binary) Root relaxation: objective 0.000000e+00, 403 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 (403 simplex iterations) in 0.14 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 -- 58 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:07 2012 Optimize a model with 8237 rows, 7033 columns and 30769 nonzeros Presolve removed 15 rows and 435 columns Presolve time: 0.05s Presolved: 8222 rows, 6598 columns, 30334 nonzeros Variable types: 0 continuous, 6598 integer (6598 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 (407 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 -- 29 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:07 2012 Optimize a model with 4097 rows, 3538 columns and 14854 nonzeros Presolve removed 15 rows and 210 columns Presolve time: 0.02s Presolved: 4082 rows, 3328 columns, 14644 nonzeros Variable types: 0 continuous, 3328 integer (3328 binary) Root relaxation: objective 0.000000e+00, 440 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 (685 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 -- 14 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:07 2012 Optimize a model with 2165 rows, 1907 columns and 7427 nonzeros Presolve removed 15 rows and 105 columns Presolve time: 0.01s Presolved: 2150 rows, 1802 columns, 7322 nonzeros Variable types: 0 continuous, 1802 integer (1802 binary) Root relaxation: objective 0.000000e+00, 395 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 (395 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 16:41:07 2012 Optimize a model with 1061 rows, 975 columns and 3183 nonzeros Presolve removed 15 rows and 45 columns Presolve time: 0.00s Presolved: 1046 rows, 930 columns, 3138 nonzeros Variable types: 0 continuous, 930 integer (930 binary) Root relaxation: objective 0.000000e+00, 416 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 (578 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 16:41:07 2012 Optimize a model with 509 rows, 509 columns and 1061 nonzeros Presolve removed 509 rows and 509 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 16:41:07 2012 Optimize a model with 785 rows, 742 columns and 2122 nonzeros Presolve removed 235 rows and 251 columns Presolve time: 0.00s Presolved: 550 rows, 491 columns, 1650 nonzeros Variable types: 0 continuous, 491 integer (491 binary) Root relaxation: objective 0.000000e+00, 237 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 0 216 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (785 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