current bounds on the number of colors: 0 -- 161 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:34 2012 Optimize a model with 11281 rows, 13019 columns and 46240 nonzeros Presolve removed 22 rows and 1760 columns Presolve time: 0.12s Presolved: 11259 rows, 11259 columns, 44480 nonzeros Variable types: 0 continuous, 11259 integer (11259 binary) Root relaxation: objective 0.000000e+00, 236 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 (236 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 -- 80 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:34 2012 Optimize a model with 5721 rows, 6579 columns and 23120 nonzeros Presolve removed 22 rows and 880 columns Presolve time: 0.05s Presolved: 5699 rows, 5699 columns, 22240 nonzeros Variable types: 0 continuous, 5699 integer (5699 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 0.06 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 -- 40 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:34 2012 Optimize a model with 2941 rows, 3359 columns and 11560 nonzeros Presolve removed 22 rows and 440 columns Presolve time: 0.02s Presolved: 2919 rows, 2919 columns, 11120 nonzeros Variable types: 0 continuous, 2919 integer (2919 binary) Root relaxation: objective 0.000000e+00, 236 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 (236 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 -- 20 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:34 2012 Optimize a model with 1551 rows, 1749 columns and 5780 nonzeros Presolve removed 22 rows and 220 columns Presolve time: 0.01s Presolved: 1529 rows, 1529 columns, 5560 nonzeros Variable types: 0 continuous, 1529 integer (1529 binary) Root relaxation: objective 0.000000e+00, 234 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 (234 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 16:21:35 2012 Optimize a model with 856 rows, 944 columns and 2890 nonzeros Presolve removed 22 rows and 110 columns Presolve time: 0.00s Presolved: 834 rows, 834 columns, 2780 nonzeros Variable types: 0 continuous, 834 integer (834 binary) Root relaxation: objective 0.000000e+00, 210 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 (210 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 16:21:35 2012 Optimize a model with 439 rows, 461 columns and 1156 nonzeros Presolve removed 179 rows and 210 columns Presolve time: 0.00s Presolved: 260 rows, 251 columns, 780 nonzeros Variable types: 0 continuous, 251 integer (251 binary) Root relaxation: objective 0.000000e+00, 131 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 0 107 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (361 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 16:21:35 2012 Optimize a model with 578 rows, 622 columns and 1734 nonzeros Presolve removed 22 rows and 66 columns Presolve time: 0.00s Presolved: 556 rows, 556 columns, 1668 nonzeros Variable types: 0 continuous, 556 integer (556 binary) Root relaxation: objective 0.000000e+00, 245 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 (335 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