current bounds on the number of colors: 0 -- 181 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:25:20 2012 Optimize a model with 14851 rows, 16453 columns and 60300 nonzeros Presolve removed 29 rows and 2610 columns Presolve time: 0.12s Presolved: 14822 rows, 13843 columns, 57690 nonzeros Variable types: 0 continuous, 13843 integer (13843 binary) Root relaxation: objective 0.000000e+00, 272 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 (272 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 16:25:20 2012 Optimize a model with 7516 rows, 8308 columns and 30150 nonzeros Presolve removed 29 rows and 1305 columns Presolve time: 0.07s Presolved: 7487 rows, 7003 columns, 28845 nonzeros Variable types: 0 continuous, 7003 integer (7003 binary) Root relaxation: objective 0.000000e+00, 269 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 (269 simplex iterations) in 0.07 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 16:25:21 2012 Optimize a model with 3767 rows, 4145 columns and 14740 nonzeros Presolve removed 29 rows and 638 columns Presolve time: 0.02s Presolved: 3738 rows, 3507 columns, 14102 nonzeros Variable types: 0 continuous, 3507 integer (3507 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 16:25:21 2012 Optimize a model with 1974 rows, 2154 columns and 7370 nonzeros Presolve removed 29 rows and 319 columns Presolve time: 0.01s Presolved: 1945 rows, 1835 columns, 7051 nonzeros Variable types: 0 continuous, 1835 integer (1835 binary) Root relaxation: objective 0.000000e+00, 268 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 (268 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 16:25:21 2012 Optimize a model with 996 rows, 1068 columns and 3350 nonzeros Presolve removed 29 rows and 145 columns Presolve time: 0.00s Presolved: 967 rows, 923 columns, 3205 nonzeros Variable types: 0 continuous, 923 integer (923 binary) Root relaxation: objective 0.000000e+00, 247 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 (247 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 16:25:21 2012 Optimize a model with 507 rows, 525 columns and 1340 nonzeros Presolve removed 187 rows and 219 columns Presolve time: 0.00s Presolved: 320 rows, 306 columns, 960 nonzeros Variable types: 0 continuous, 306 integer (306 binary) Root relaxation: objective 0.000000e+00, 166 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 0 131 - 0.00000 - - 0s Explored 0 nodes (483 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 16:25:21 2012 Optimize a model with 670 rows, 706 columns and 2010 nonzeros Presolve removed 29 rows and 87 columns Presolve time: 0.00s Presolved: 641 rows, 619 columns, 1923 nonzeros Variable types: 0 continuous, 619 integer (619 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 0.00 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