current bounds on the number of colors: 0 -- 194 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:21 2012 Optimize a model with 20370 rows, 19026 columns and 79346 nonzeros Presolve removed 27 rows and 2619 columns Presolve time: 0.12s Presolved: 20343 rows, 16407 columns, 76727 nonzeros Variable types: 0 continuous, 16407 integer (16407 binary) Root relaxation: objective 0.000000e+00, 301 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 (301 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 -- 97 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:21 2012 Optimize a model with 10178 rows, 9520 columns and 39264 nonzeros Presolve removed 27 rows and 1296 columns Presolve time: 0.09s Presolved: 10151 rows, 8224 columns, 37968 nonzeros Variable types: 0 continuous, 8224 integer (8224 binary) Root relaxation: objective 0.000000e+00, 301 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 (301 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 -- 48 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:22 2012 Optimize a model with 5186 rows, 4864 columns and 19632 nonzeros Presolve removed 27 rows and 648 columns Presolve time: 0.03s Presolved: 5159 rows, 4216 columns, 18984 nonzeros Variable types: 0 continuous, 4216 integer (4216 binary) Root relaxation: objective 0.000000e+00, 306 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 0.04 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 16:28:22 2012 Optimize a model with 2690 rows, 2536 columns and 9816 nonzeros Presolve removed 27 rows and 324 columns Presolve time: 0.01s Presolved: 2663 rows, 2212 columns, 9492 nonzeros Variable types: 0 continuous, 2212 integer (2212 binary) Root relaxation: objective 0.000000e+00, 302 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 (302 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 16:28:22 2012 Optimize a model with 1442 rows, 1372 columns and 4908 nonzeros Presolve removed 27 rows and 162 columns Presolve time: 0.00s Presolved: 1415 rows, 1210 columns, 4746 nonzeros Variable types: 0 continuous, 1210 integer (1210 binary) Root relaxation: objective 0.000000e+00, 313 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 (458 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 16:28:22 2012 Optimize a model with 818 rows, 790 columns and 2454 nonzeros Presolve removed 27 rows and 81 columns Presolve time: 0.00s Presolved: 791 rows, 709 columns, 2373 nonzeros Variable types: 0 continuous, 709 integer (709 binary) Root relaxation: objective 0.000000e+00, 306 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 (421 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 16:28:22 2012 Optimize a model with 402 rows, 402 columns and 818 nonzeros Presolve removed 402 rows and 402 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 16:28:22 2012 Optimize a model with 610 rows, 596 columns and 1636 nonzeros Presolve removed 198 rows and 227 columns Presolve time: 0.00s Presolved: 412 rows, 369 columns, 1236 nonzeros Variable types: 0 continuous, 369 integer (369 binary) Root relaxation: objective 0.000000e+00, 193 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 0 163 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (622 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