current bounds on the number of colors: 0 -- 158 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:03 2012 Optimize a model with 11613 rows, 12627 columns and 46847 nonzeros Presolve removed 28 rows and 2212 columns Presolve time: 0.11s Presolved: 11585 rows, 10415 columns, 44635 nonzeros Variable types: 0 continuous, 10415 integer (10415 binary) Root relaxation: objective 0.000000e+00, 233 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 (233 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 -- 79 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:03 2012 Optimize a model with 5813 rows, 6307 columns and 23127 nonzeros Presolve removed 28 rows and 1092 columns Presolve time: 0.05s Presolved: 5785 rows, 5215 columns, 22035 nonzeros Variable types: 0 continuous, 5215 integer (5215 binary) Root relaxation: objective 0.000000e+00, 233 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 (233 simplex iterations) in 0.05 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 -- 39 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:04 2012 Optimize a model with 2913 rows, 3147 columns and 11267 nonzeros Presolve removed 28 rows and 532 columns Presolve time: 0.02s Presolved: 2885 rows, 2615 columns, 10735 nonzeros Variable types: 0 continuous, 2615 integer (2615 binary) Root relaxation: objective 0.000000e+00, 233 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 (233 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 -- 19 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:04 2012 Optimize a model with 1463 rows, 1567 columns and 5337 nonzeros Presolve removed 28 rows and 252 columns Presolve time: 0.01s Presolved: 1435 rows, 1315 columns, 5085 nonzeros Variable types: 0 continuous, 1315 integer (1315 binary) Root relaxation: objective 0.000000e+00, 223 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 (223 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 -- 9 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:04 2012 Optimize a model with 738 rows, 777 columns and 2372 nonzeros Presolve removed 28 rows and 112 columns Presolve time: 0.00s Presolved: 710 rows, 665 columns, 2260 nonzeros Variable types: 0 continuous, 665 integer (665 binary) Root relaxation: objective 0.000000e+00, 213 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 (213 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 -- 4 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:04 2012 Optimize a model with 448 rows, 461 columns and 1186 nonzeros Presolve removed 162 rows and 192 columns Presolve time: 0.00s Presolved: 286 rows, 269 columns, 858 nonzeros Variable types: 0 continuous, 269 integer (269 binary) Root relaxation: objective 0.000000e+00, 141 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 0 123 - 0.00000 - - 0s Explored 0 nodes (471 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 -- 4 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:04 2012 Optimize a model with 593 rows, 619 columns and 1779 nonzeros Presolve removed 28 rows and 84 columns Presolve time: 0.00s Presolved: 565 rows, 535 columns, 1695 nonzeros Variable types: 0 continuous, 535 integer (535 binary) Root relaxation: objective 0.000000e+00, 227 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 (306 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