current bounds on the number of colors: 0 -- 168 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:52 2012 Optimize a model with 12432 rows, 14258 columns and 50904 nonzeros Presolve removed 28 rows and 2352 columns Presolve time: 0.12s Presolved: 12404 rows, 11906 columns, 48552 nonzeros Variable types: 0 continuous, 11906 integer (11906 binary) Root relaxation: objective 0.000000e+00, 247 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 (247 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 -- 84 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:53 2012 Optimize a model with 6300 rows, 7202 columns and 25452 nonzeros Presolve removed 28 rows and 1176 columns Presolve time: 0.05s Presolved: 6272 rows, 6026 columns, 24276 nonzeros Variable types: 0 continuous, 6026 integer (6026 binary) Root relaxation: objective 0.000000e+00, 250 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 (250 simplex iterations) in 0.06 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 -- 42 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:53 2012 Optimize a model with 3234 rows, 3674 columns and 12726 nonzeros Presolve removed 28 rows and 588 columns Presolve time: 0.02s Presolved: 3206 rows, 3086 columns, 12138 nonzeros Variable types: 0 continuous, 3086 integer (3086 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 0.02 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 -- 21 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:53 2012 Optimize a model with 1628 rows, 1826 columns and 6060 nonzeros Presolve removed 28 rows and 280 columns Presolve time: 0.01s Presolved: 1600 rows, 1546 columns, 5780 nonzeros Variable types: 0 continuous, 1546 integer (1546 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 (235 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 -- 10 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:53 2012 Optimize a model with 898 rows, 986 columns and 3030 nonzeros Presolve removed 28 rows and 140 columns Presolve time: 0.00s Presolved: 870 rows, 846 columns, 2890 nonzeros Variable types: 0 continuous, 846 integer (846 binary) Root relaxation: objective 0.000000e+00, 222 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 (222 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:53 2012 Optimize a model with 460 rows, 482 columns and 1212 nonzeros Presolve removed 186 rows and 223 columns Presolve time: 0.00s Presolved: 274 rows, 259 columns, 822 nonzeros Variable types: 0 continuous, 259 integer (259 binary) Root relaxation: objective 0.000000e+00, 138 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 95 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (411 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:22:53 2012 Optimize a model with 606 rows, 650 columns and 1818 nonzeros Presolve removed 28 rows and 84 columns Presolve time: 0.00s Presolved: 578 rows, 566 columns, 1734 nonzeros Variable types: 0 continuous, 566 integer (566 binary) Root relaxation: objective 0.000000e+00, 220 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 (220 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