current bounds on the number of colors: 0 -- 240 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:43:59 2012 Optimize a model with 34800 rows, 29088 columns and 132480 nonzeros Presolve removed 19 rows and 2280 columns Presolve time: 0.15s Presolved: 34781 rows, 26808 columns, 130200 nonzeros Variable types: 0 continuous, 26808 integer (26808 binary) Root relaxation: objective 0.000000e+00, 426 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 (426 simplex iterations) in 0.19 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 -- 120 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:44:00 2012 Optimize a model with 17520 rows, 14688 columns and 66240 nonzeros Presolve removed 19 rows and 1140 columns Presolve time: 0.13s Presolved: 17501 rows, 13548 columns, 65100 nonzeros Variable types: 0 continuous, 13548 integer (13548 binary) Root relaxation: objective 0.000000e+00, 431 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 (670 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 -- 60 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:44:00 2012 Optimize a model with 8880 rows, 7488 columns and 33120 nonzeros Presolve removed 19 rows and 570 columns Presolve time: 0.06s Presolved: 8861 rows, 6918 columns, 32550 nonzeros Variable types: 0 continuous, 6918 integer (6918 binary) Root relaxation: objective 0.000000e+00, 427 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 (427 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 -- 30 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:44:01 2012 Optimize a model with 4560 rows, 3888 columns and 16560 nonzeros Presolve removed 19 rows and 285 columns Presolve time: 0.02s Presolved: 4541 rows, 3603 columns, 16275 nonzeros Variable types: 0 continuous, 3603 integer (3603 binary) Root relaxation: objective 0.000000e+00, 437 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 (683 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 -- 15 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:44:01 2012 Optimize a model with 2256 rows, 1968 columns and 7728 nonzeros Presolve removed 19 rows and 133 columns Presolve time: 0.01s Presolved: 2237 rows, 1835 columns, 7595 nonzeros Variable types: 0 continuous, 1835 integer (1835 binary) Root relaxation: objective 0.000000e+00, 404 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 (404 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 -- 7 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:44:01 2012 Optimize a model with 1104 rows, 1008 columns and 3312 nonzeros Presolve removed 19 rows and 57 columns Presolve time: 0.00s Presolved: 1085 rows, 951 columns, 3255 nonzeros Variable types: 0 continuous, 951 integer (951 binary) Root relaxation: objective 0.000000e+00, 434 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 (613 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 16:44:01 2012 Optimize a model with 528 rows, 528 columns and 1104 nonzeros Presolve removed 528 rows and 528 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 16:44:01 2012 Optimize a model with 816 rows, 768 columns and 2208 nonzeros Presolve removed 242 rows and 262 columns Presolve time: 0.00s Presolved: 574 rows, 506 columns, 1722 nonzeros Variable types: 0 continuous, 506 integer (506 binary) Root relaxation: objective 0.000000e+00, 249 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 0 219 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (822 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