current bounds on the number of colors: 0 -- 220 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:16 2012 Optimize a model with 30250 rows, 24473 columns and 114290 nonzeros Presolve removed 20 rows and 2200 columns Presolve time: 0.14s Presolved: 30230 rows, 22273 columns, 112090 nonzeros Variable types: 0 continuous, 22273 integer (22273 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 -- 110 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:16 2012 Optimize a model with 15235 rows, 12373 columns and 57145 nonzeros Presolve removed 20 rows and 1100 columns Presolve time: 0.13s Presolved: 15215 rows, 11273 columns, 56045 nonzeros Variable types: 0 continuous, 11273 integer (11273 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 0.14 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 -- 55 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:17 2012 Optimize a model with 7591 rows, 6213 columns and 28053 nonzeros Presolve removed 20 rows and 540 columns Presolve time: 0.04s Presolved: 7571 rows, 5673 columns, 27513 nonzeros Variable types: 0 continuous, 5673 integer (5673 binary) Root relaxation: objective 0.000000e+00, 400 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 (400 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 -- 27 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:17 2012 Optimize a model with 3769 rows, 3133 columns and 13507 nonzeros Presolve removed 20 rows and 260 columns Presolve time: 0.02s Presolved: 3749 rows, 2873 columns, 13247 nonzeros Variable types: 0 continuous, 2873 integer (2873 binary) Root relaxation: objective 0.000000e+00, 412 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 (642 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 -- 13 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:17 2012 Optimize a model with 1858 rows, 1593 columns and 6234 nonzeros Presolve removed 20 rows and 120 columns Presolve time: 0.01s Presolved: 1838 rows, 1473 columns, 6114 nonzeros Variable types: 0 continuous, 1473 integer (1473 binary) Root relaxation: objective 0.000000e+00, 383 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 (383 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 16:36:17 2012 Optimize a model with 1039 rows, 933 columns and 3117 nonzeros Presolve removed 20 rows and 60 columns Presolve time: 0.00s Presolved: 1019 rows, 873 columns, 3057 nonzeros Variable types: 0 continuous, 873 integer (873 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 (543 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 16:36:17 2012 Optimize a model with 493 rows, 493 columns and 1039 nonzeros Presolve removed 493 rows and 493 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 16:36:17 2012 Optimize a model with 766 rows, 713 columns and 2078 nonzeros Presolve removed 224 rows and 246 columns Presolve time: 0.00s Presolved: 542 rows, 467 columns, 1626 nonzeros Variable types: 0 continuous, 467 integer (467 binary) Root relaxation: objective 0.000000e+00, 229 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 0 193 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (736 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