current bounds on the number of colors: 0 -- 207 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:03 2012 Optimize a model with 23176 rows, 21544 columns and 90228 nonzeros Presolve removed 21 rows and 2163 columns Presolve time: 0.14s Presolved: 23155 rows, 19381 columns, 88065 nonzeros Variable types: 0 continuous, 19381 integer (19381 binary) Root relaxation: objective 0.000000e+00, 349 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 (349 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 -- 103 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:04 2012 Optimize a model with 11580 rows, 10780 columns and 44676 nonzeros Presolve removed 21 rows and 1071 columns Presolve time: 0.11s Presolved: 11559 rows, 9709 columns, 43605 nonzeros Variable types: 0 continuous, 9709 integer (9709 binary) Root relaxation: objective 0.000000e+00, 352 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 (352 simplex iterations) in 0.12 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 -- 51 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:04 2012 Optimize a model with 5782 rows, 5398 columns and 21900 nonzeros Presolve removed 21 rows and 525 columns Presolve time: 0.03s Presolved: 5761 rows, 4873 columns, 21375 nonzeros Variable types: 0 continuous, 4873 integer (4873 binary) Root relaxation: objective 0.000000e+00, 341 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 (341 simplex iterations) in 0.04 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 -- 25 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:04 2012 Optimize a model with 2883 rows, 2707 columns and 10512 nonzeros Presolve removed 21 rows and 252 columns Presolve time: 0.01s Presolved: 2862 rows, 2455 columns, 10260 nonzeros Variable types: 0 continuous, 2455 integer (2455 binary) Root relaxation: objective 0.000000e+00, 357 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 (548 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 -- 12 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:04 2012 Optimize a model with 1545 rows, 1465 columns and 5256 nonzeros Presolve removed 21 rows and 126 columns Presolve time: 0.01s Presolved: 1524 rows, 1339 columns, 5130 nonzeros Variable types: 0 continuous, 1339 integer (1339 binary) Root relaxation: objective 0.000000e+00, 331 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 (331 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 16:32:04 2012 Optimize a model with 876 rows, 844 columns and 2628 nonzeros Presolve removed 21 rows and 63 columns Presolve time: 0.00s Presolved: 855 rows, 781 columns, 2565 nonzeros Variable types: 0 continuous, 781 integer (781 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 (519 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 16:32:04 2012 Optimize a model with 430 rows, 430 columns and 876 nonzeros Presolve removed 430 rows and 430 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 16:32:04 2012 Optimize a model with 653 rows, 637 columns and 1752 nonzeros Presolve removed 215 rows and 240 columns Presolve time: 0.00s Presolved: 438 rows, 397 columns, 1314 nonzeros Variable types: 0 continuous, 397 integer (397 binary) Root relaxation: objective 0.000000e+00, 203 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 0 175 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (646 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