current bounds on the number of colors: 0 -- 162 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:41 2012 Optimize a model with 10692 rows, 13252 columns and 44712 nonzeros Presolve removed 29 rows and 2349 columns Presolve time: 0.12s Presolved: 10663 rows, 10903 columns, 42363 nonzeros Variable types: 0 continuous, 10903 integer (10903 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 (227 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 -- 81 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:41 2012 Optimize a model with 5362 rows, 6610 columns and 22080 nonzeros Presolve removed 29 rows and 1160 columns Presolve time: 0.05s Presolved: 5333 rows, 5450 columns, 20920 nonzeros Variable types: 0 continuous, 5450 integer (5450 binary) Root relaxation: objective 0.000000e+00, 228 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 (228 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 -- 40 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:41 2012 Optimize a model with 2762 rows, 3370 columns and 11040 nonzeros Presolve removed 29 rows and 580 columns Presolve time: 0.02s Presolved: 2733 rows, 2790 columns, 10460 nonzeros Variable types: 0 continuous, 2790 integer (2790 binary) Root relaxation: objective 0.000000e+00, 228 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 (228 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 -- 20 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:41 2012 Optimize a model with 1462 rows, 1750 columns and 5520 nonzeros Presolve removed 29 rows and 290 columns Presolve time: 0.01s Presolved: 1433 rows, 1460 columns, 5230 nonzeros Variable types: 0 continuous, 1460 integer (1460 binary) Root relaxation: objective 0.000000e+00, 224 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 (224 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 -- 10 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:41 2012 Optimize a model with 812 rows, 940 columns and 2760 nonzeros Presolve removed 29 rows and 145 columns Presolve time: 0.00s Presolved: 783 rows, 795 columns, 2615 nonzeros Variable types: 0 continuous, 795 integer (795 binary) Root relaxation: objective 0.000000e+00, 211 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 (211 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:41 2012 Optimize a model with 422 rows, 454 columns and 1104 nonzeros Presolve removed 172 rows and 206 columns Presolve time: 0.00s Presolved: 250 rows, 248 columns, 750 nonzeros Variable types: 0 continuous, 248 integer (248 binary) Root relaxation: objective 0.000000e+00, 130 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 95 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (378 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:21:41 2012 Optimize a model with 552 rows, 616 columns and 1656 nonzeros Presolve removed 29 rows and 87 columns Presolve time: 0.00s Presolved: 523 rows, 529 columns, 1569 nonzeros Variable types: 0 continuous, 529 integer (529 binary) Root relaxation: objective 0.000000e+00, 204 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 (204 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