current bounds on the number of colors: 0 -- 160 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:27 2012 Optimize a model with 11120 rows, 12937 columns and 45680 nonzeros Presolve removed 27 rows and 2160 columns Presolve time: 0.12s Presolved: 11093 rows, 10777 columns, 43520 nonzeros Variable types: 0 continuous, 10777 integer (10777 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 (362 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 -- 80 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:27 2012 Optimize a model with 5640 rows, 6537 columns and 22840 nonzeros Presolve removed 27 rows and 1080 columns Presolve time: 0.05s Presolved: 5613 rows, 5457 columns, 21760 nonzeros Variable types: 0 continuous, 5457 integer (5457 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 (374 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 16:21:27 2012 Optimize a model with 2900 rows, 3337 columns and 11420 nonzeros Presolve removed 27 rows and 540 columns Presolve time: 0.02s Presolved: 2873 rows, 2797 columns, 10880 nonzeros Variable types: 0 continuous, 2797 integer (2797 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 (371 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 16:21:27 2012 Optimize a model with 1530 rows, 1737 columns and 5710 nonzeros Presolve removed 27 rows and 270 columns Presolve time: 0.01s Presolved: 1503 rows, 1467 columns, 5440 nonzeros Variable types: 0 continuous, 1467 integer (1467 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 (337 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 16:21:27 2012 Optimize a model with 845 rows, 937 columns and 2855 nonzeros Presolve removed 27 rows and 135 columns Presolve time: 0.00s Presolved: 818 rows, 802 columns, 2720 nonzeros Variable types: 0 continuous, 802 integer (802 binary) Root relaxation: objective 0.000000e+00, 208 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 (208 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 16:21:27 2012 Optimize a model with 434 rows, 457 columns and 1142 nonzeros Presolve removed 174 rows and 208 columns Presolve time: 0.00s Presolved: 260 rows, 249 columns, 780 nonzeros Variable types: 0 continuous, 249 integer (249 binary) Root relaxation: objective 0.000000e+00, 137 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 0 106 - 0.00000 - - 0s Explored 0 nodes (404 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 16:21:28 2012 Optimize a model with 571 rows, 617 columns and 1713 nonzeros Presolve removed 27 rows and 81 columns Presolve time: 0.00s Presolved: 544 rows, 536 columns, 1632 nonzeros Variable types: 0 continuous, 536 integer (536 binary) Root relaxation: objective 0.000000e+00, 214 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 (214 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