current bounds on the number of colors: 0 -- 234 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:44 2012 Optimize a model with 34398 rows, 27670 columns and 129870 nonzeros Presolve removed 17 rows and 1989 columns Presolve time: 0.18s Presolved: 34381 rows, 25681 columns, 127881 nonzeros Variable types: 0 continuous, 25681 integer (25681 binary) Root relaxation: objective 0.000000e+00, 408 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 (408 simplex iterations) in 0.21 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 -- 117 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:45 2012 Optimize a model with 17170 rows, 13864 columns and 64380 nonzeros Presolve removed 17 rows and 986 columns Presolve time: 0.12s Presolved: 17153 rows, 12878 columns, 63394 nonzeros Variable types: 0 continuous, 12878 integer (12878 binary) Root relaxation: objective 0.000000e+00, 407 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 (407 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 -- 58 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:46 2012 Optimize a model with 8702 rows, 7078 columns and 32190 nonzeros Presolve removed 17 rows and 493 columns Presolve time: 0.05s Presolved: 8685 rows, 6585 columns, 31697 nonzeros Variable types: 0 continuous, 6585 integer (6585 binary) Root relaxation: objective 0.000000e+00, 411 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 (411 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 -- 29 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:46 2012 Optimize a model with 4322 rows, 3568 columns and 15540 nonzeros Presolve removed 17 rows and 238 columns Presolve time: 0.02s Presolved: 4305 rows, 3330 columns, 15302 nonzeros Variable types: 0 continuous, 3330 integer (3330 binary) Root relaxation: objective 0.000000e+00, 461 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 (710 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 -- 14 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:46 2012 Optimize a model with 2278 rows, 1930 columns and 7770 nonzeros Presolve removed 17 rows and 119 columns Presolve time: 0.01s Presolved: 2261 rows, 1811 columns, 7651 nonzeros Variable types: 0 continuous, 1811 integer (1811 binary) Root relaxation: objective 0.000000e+00, 399 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 (399 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 16:41:46 2012 Optimize a model with 1110 rows, 994 columns and 3330 nonzeros Presolve removed 17 rows and 51 columns Presolve time: 0.00s Presolved: 1093 rows, 943 columns, 3279 nonzeros Variable types: 0 continuous, 943 integer (943 binary) Root relaxation: objective 0.000000e+00, 470 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 (660 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 16:41:46 2012 Optimize a model with 526 rows, 526 columns and 1110 nonzeros Presolve removed 526 rows and 526 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 16:41:46 2012 Optimize a model with 818 rows, 760 columns and 2220 nonzeros Presolve removed 234 rows and 251 columns Presolve time: 0.00s Presolved: 584 rows, 509 columns, 1752 nonzeros Variable types: 0 continuous, 509 integer (509 binary) Root relaxation: objective 0.000000e+00, 251 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 0 214 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (828 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