current bounds on the number of colors: 0 -- 150 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:58 2012 Optimize a model with 10350 rows, 11386 columns and 41850 nonzeros Presolve removed 23 rows and 1725 columns Presolve time: 0.11s Presolved: 10327 rows, 9661 columns, 40125 nonzeros Variable types: 0 continuous, 9661 integer (9661 binary) Root relaxation: objective 0.000000e+00, 233 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 (364 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 -- 75 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:59 2012 Optimize a model with 5182 rows, 5686 columns and 20646 nonzeros Presolve removed 23 rows and 851 columns Presolve time: 0.04s Presolved: 5159 rows, 4835 columns, 19795 nonzeros Variable types: 0 continuous, 4835 integer (4835 binary) Root relaxation: objective 0.000000e+00, 235 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 0.05 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 -- 37 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:59 2012 Optimize a model with 2598 rows, 2836 columns and 10044 nonzeros Presolve removed 23 rows and 414 columns Presolve time: 0.01s Presolved: 2575 rows, 2422 columns, 9630 nonzeros Variable types: 0 continuous, 2422 integer (2422 binary) Root relaxation: objective 0.000000e+00, 233 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 (347 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 -- 18 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:59 2012 Optimize a model with 1374 rows, 1486 columns and 5022 nonzeros Presolve removed 23 rows and 207 columns Presolve time: 0.01s Presolved: 1351 rows, 1279 columns, 4815 nonzeros Variable types: 0 continuous, 1279 integer (1279 binary) Root relaxation: objective 0.000000e+00, 230 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 (230 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 -- 9 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:59 2012 Optimize a model with 694 rows, 736 columns and 2232 nonzeros Presolve removed 23 rows and 92 columns Presolve time: 0.00s Presolved: 671 rows, 644 columns, 2140 nonzeros Variable types: 0 continuous, 644 integer (644 binary) Root relaxation: objective 0.000000e+00, 206 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 (206 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 -- 4 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:59 2012 Optimize a model with 422 rows, 436 columns and 1116 nonzeros Presolve removed 160 rows and 188 columns Presolve time: 0.00s Presolved: 262 rows, 248 columns, 786 nonzeros Variable types: 0 continuous, 248 integer (248 binary) Root relaxation: objective 0.000000e+00, 133 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 0 108 - 0.00000 - - 0s Explored 0 nodes (397 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound 1.000000000000e+00, gap - current bounds on the number of colors: 2 -- 4 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:59 2012 Optimize a model with 558 rows, 586 columns and 1674 nonzeros Presolve removed 23 rows and 69 columns Presolve time: 0.00s Presolved: 535 rows, 517 columns, 1605 nonzeros Variable types: 0 continuous, 517 integer (517 binary) Root relaxation: objective 0.000000e+00, 202 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 (202 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% optimal solution found: number of colors: 3