current bounds on the number of colors: 0 -- 208 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:20 2012 Optimize a model with 25584 rows, 21876 columns and 97760 nonzeros Presolve removed 17 rows and 1768 columns Presolve time: 0.15s Presolved: 25567 rows, 20108 columns, 95992 nonzeros Variable types: 0 continuous, 20108 integer (20108 binary) Root relaxation: objective 0.000000e+00, 362 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 (362 simplex iterations) in 0.17 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 -- 104 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:20 2012 Optimize a model with 12896 rows, 11060 columns and 48880 nonzeros Presolve removed 17 rows and 884 columns Presolve time: 0.12s Presolved: 12879 rows, 10176 columns, 47996 nonzeros Variable types: 0 continuous, 10176 integer (10176 binary) Root relaxation: objective 0.000000e+00, 363 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 (363 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 -- 52 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:21 2012 Optimize a model with 6552 rows, 5652 columns and 24440 nonzeros Presolve removed 17 rows and 442 columns Presolve time: 0.04s Presolved: 6535 rows, 5210 columns, 23998 nonzeros Variable types: 0 continuous, 5210 integer (5210 binary) Root relaxation: objective 0.000000e+00, 359 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 (359 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 -- 26 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:21 2012 Optimize a model with 3380 rows, 2948 columns and 12220 nonzeros Presolve removed 17 rows and 221 columns Presolve time: 0.01s Presolved: 3363 rows, 2727 columns, 11999 nonzeros Variable types: 0 continuous, 2727 integer (2727 binary) Root relaxation: objective 0.000000e+00, 372 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 (372 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 -- 13 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:21 2012 Optimize a model with 1672 rows, 1492 columns and 5640 nonzeros Presolve removed 17 rows and 102 columns Presolve time: 0.01s Presolved: 1655 rows, 1390 columns, 5538 nonzeros Variable types: 0 continuous, 1390 integer (1390 binary) Root relaxation: objective 0.000000e+00, 349 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 (493 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 16:32:21 2012 Optimize a model with 940 rows, 868 columns and 2820 nonzeros Presolve removed 17 rows and 51 columns Presolve time: 0.00s Presolved: 923 rows, 817 columns, 2769 nonzeros Variable types: 0 continuous, 817 integer (817 binary) Root relaxation: objective 0.000000e+00, 374 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 (508 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 16:32:21 2012 Optimize a model with 452 rows, 452 columns and 940 nonzeros Presolve removed 452 rows and 452 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 16:32:21 2012 Optimize a model with 696 rows, 660 columns and 1880 nonzeros Presolve removed 218 rows and 240 columns Presolve time: 0.00s Presolved: 478 rows, 420 columns, 1434 nonzeros Variable types: 0 continuous, 420 integer (420 binary) Root relaxation: objective 0.000000e+00, 206 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 0 174 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (659 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