current bounds on the number of colors: 0 -- 180 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:25:07 2012 Optimize a model with 14850 rows, 16363 columns and 60210 nonzeros Presolve removed 27 rows and 2430 columns Presolve time: 0.12s Presolved: 14823 rows, 13933 columns, 57780 nonzeros Variable types: 0 continuous, 13933 integer (13933 binary) Root relaxation: objective 0.000000e+00, 268 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 (268 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 -- 90 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:25:08 2012 Optimize a model with 7515 rows, 8263 columns and 30105 nonzeros Presolve removed 27 rows and 1215 columns Presolve time: 0.07s Presolved: 7488 rows, 7048 columns, 28890 nonzeros Variable types: 0 continuous, 7048 integer (7048 binary) Root relaxation: objective 0.000000e+00, 270 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 (270 simplex iterations) in 0.08 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 -- 45 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:25:08 2012 Optimize a model with 3766 rows, 4123 columns and 14718 nonzeros Presolve removed 27 rows and 594 columns Presolve time: 0.02s Presolved: 3739 rows, 3529 columns, 14124 nonzeros Variable types: 0 continuous, 3529 integer (3529 binary) Root relaxation: objective 0.000000e+00, 271 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 (271 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 -- 22 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:25:08 2012 Optimize a model with 1973 rows, 2143 columns and 7359 nonzeros Presolve removed 27 rows and 297 columns Presolve time: 0.01s Presolved: 1946 rows, 1846 columns, 7062 nonzeros Variable types: 0 continuous, 1846 integer (1846 binary) Root relaxation: objective 0.000000e+00, 266 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 (266 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 -- 11 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:25:08 2012 Optimize a model with 995 rows, 1063 columns and 3345 nonzeros Presolve removed 27 rows and 135 columns Presolve time: 0.00s Presolved: 968 rows, 928 columns, 3210 nonzeros Variable types: 0 continuous, 928 integer (928 binary) Root relaxation: objective 0.000000e+00, 243 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 (243 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:25:08 2012 Optimize a model with 506 rows, 523 columns and 1338 nonzeros Presolve removed 186 rows and 216 columns Presolve time: 0.00s Presolved: 320 rows, 307 columns, 960 nonzeros Variable types: 0 continuous, 307 integer (307 binary) Root relaxation: objective 0.000000e+00, 153 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 0 132 - 0.00000 - - 0s Explored 0 nodes (489 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 - current bounds on the number of colors: 2 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:25:08 2012 Optimize a model with 669 rows, 703 columns and 2007 nonzeros Presolve removed 27 rows and 81 columns Presolve time: 0.00s Presolved: 642 rows, 622 columns, 1926 nonzeros Variable types: 0 continuous, 622 integer (622 binary) Root relaxation: objective 0.000000e+00, 263 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 (263 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