current bounds on the number of colors: 0 -- 212 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:33:31 2012 Optimize a model with 27242 rows, 22727 columns and 103562 nonzeros Presolve removed 22 rows and 2332 columns Presolve time: 0.13s Presolved: 27220 rows, 20395 columns, 101230 nonzeros Variable types: 0 continuous, 20395 integer (20395 binary) Root relaxation: objective 0.000000e+00, 364 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 (562 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 -- 106 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:33:31 2012 Optimize a model with 13727 rows, 11491 columns and 51781 nonzeros Presolve removed 22 rows and 1166 columns Presolve time: 0.12s Presolved: 13705 rows, 10325 columns, 50615 nonzeros Variable types: 0 continuous, 10325 integer (10325 binary) Root relaxation: objective 0.000000e+00, 367 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 (588 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 -- 53 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:33:32 2012 Optimize a model with 6842 rows, 5767 columns and 25402 nonzeros Presolve removed 22 rows and 572 columns Presolve time: 0.04s Presolved: 6820 rows, 5195 columns, 24830 nonzeros Variable types: 0 continuous, 5195 integer (5195 binary) Root relaxation: objective 0.000000e+00, 362 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 (571 simplex iterations) in 0.05 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 -- 26 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:33:32 2012 Optimize a model with 3527 rows, 3011 columns and 12701 nonzeros Presolve removed 22 rows and 286 columns Presolve time: 0.01s Presolved: 3505 rows, 2725 columns, 12415 nonzeros Variable types: 0 continuous, 2725 integer (2725 binary) Root relaxation: objective 0.000000e+00, 373 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 (572 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 -- 13 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:33:32 2012 Optimize a model with 1742 rows, 1527 columns and 5862 nonzeros Presolve removed 22 rows and 132 columns Presolve time: 0.01s Presolved: 1720 rows, 1395 columns, 5730 nonzeros Variable types: 0 continuous, 1395 integer (1395 binary) Root relaxation: objective 0.000000e+00, 350 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 (350 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 16:33:32 2012 Optimize a model with 977 rows, 891 columns and 2931 nonzeros Presolve removed 22 rows and 66 columns Presolve time: 0.00s Presolved: 955 rows, 825 columns, 2865 nonzeros Variable types: 0 continuous, 825 integer (825 binary) Root relaxation: objective 0.000000e+00, 355 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 (355 simplex iterations) in 0.00 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 16:33:32 2012 Optimize a model with 467 rows, 467 columns and 977 nonzeros Presolve removed 467 rows and 467 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 16:33:32 2012 Optimize a model with 722 rows, 679 columns and 1954 nonzeros Presolve removed 214 rows and 237 columns Presolve time: 0.00s Presolved: 508 rows, 442 columns, 1524 nonzeros Variable types: 0 continuous, 442 integer (442 binary) Root relaxation: objective 0.000000e+00, 216 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 0 188 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (728 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