current bounds on the number of colors: 0 -- 196 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:51 2012 Optimize a model with 19012 rows, 19400 columns and 75656 nonzeros Presolve removed 28 rows and 2744 columns Presolve time: 0.12s Presolved: 18984 rows, 16656 columns, 72912 nonzeros Variable types: 0 continuous, 16656 integer (16656 binary) Root relaxation: objective 0.000000e+00, 300 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 (300 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 -- 98 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:51 2012 Optimize a model with 9604 rows, 9796 columns and 37828 nonzeros Presolve removed 28 rows and 1372 columns Presolve time: 0.09s Presolved: 9576 rows, 8424 columns, 36456 nonzeros Variable types: 0 continuous, 8424 integer (8424 binary) Root relaxation: objective 0.000000e+00, 302 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 (302 simplex iterations) in 0.10 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 -- 49 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:51 2012 Optimize a model with 4804 rows, 4896 columns and 18528 nonzeros Presolve removed 28 rows and 672 columns Presolve time: 0.03s Presolved: 4776 rows, 4224 columns, 17856 nonzeros Variable types: 0 continuous, 4224 integer (4224 binary) Root relaxation: objective 0.000000e+00, 303 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 (303 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 -- 24 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:51 2012 Optimize a model with 2500 rows, 2544 columns and 9264 nonzeros Presolve removed 28 rows and 336 columns Presolve time: 0.01s Presolved: 2472 rows, 2208 columns, 8928 nonzeros Variable types: 0 continuous, 2208 integer (2208 binary) Root relaxation: objective 0.000000e+00, 309 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 (309 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 -- 12 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:51 2012 Optimize a model with 1348 rows, 1368 columns and 4632 nonzeros Presolve removed 28 rows and 168 columns Presolve time: 0.00s Presolved: 1320 rows, 1200 columns, 4464 nonzeros Variable types: 0 continuous, 1200 integer (1200 binary) Root relaxation: objective 0.000000e+00, 295 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 (295 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:51 2012 Optimize a model with 772 rows, 780 columns and 2316 nonzeros Presolve removed 28 rows and 84 columns Presolve time: 0.00s Presolved: 744 rows, 696 columns, 2232 nonzeros Variable types: 0 continuous, 696 integer (696 binary) Root relaxation: objective 0.000000e+00, 280 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 (280 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 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:51 2012 Optimize a model with 388 rows, 388 columns and 772 nonzeros Presolve removed 388 rows and 388 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 16:28:51 2012 Optimize a model with 580 rows, 584 columns and 1544 nonzeros Presolve removed 200 rows and 230 columns Presolve time: 0.00s Presolved: 380 rows, 354 columns, 1140 nonzeros Variable types: 0 continuous, 354 integer (354 binary) Root relaxation: objective 0.000000e+00, 184 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 0 160 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (628 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