current bounds on the number of colors: 0 -- 187 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:39 2012 Optimize a model with 17950 rows, 17582 columns and 70680 nonzeros Presolve removed 30 rows and 2790 columns Presolve time: 0.13s Presolved: 17920 rows, 14792 columns, 67890 nonzeros Variable types: 0 continuous, 14792 integer (14792 binary) Root relaxation: objective 0.000000e+00, 291 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 (442 simplex iterations) in 0.16 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 -- 93 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:40 2012 Optimize a model with 8973 rows, 8793 columns and 34960 nonzeros Presolve removed 30 rows and 1380 columns Presolve time: 0.08s Presolved: 8943 rows, 7413 columns, 33580 nonzeros Variable types: 0 continuous, 7413 integer (7413 binary) Root relaxation: objective 0.000000e+00, 287 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 (424 simplex iterations) in 0.09 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 -- 46 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:40 2012 Optimize a model with 4580 rows, 4492 columns and 17480 nonzeros Presolve removed 30 rows and 690 columns Presolve time: 0.03s Presolved: 4550 rows, 3802 columns, 16790 nonzeros Variable types: 0 continuous, 3802 integer (3802 binary) Root relaxation: objective 0.000000e+00, 292 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 (424 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 -- 23 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:40 2012 Optimize a model with 2288 rows, 2248 columns and 8360 nonzeros Presolve removed 30 rows and 330 columns Presolve time: 0.01s Presolved: 2258 rows, 1918 columns, 8030 nonzeros Variable types: 0 continuous, 1918 integer (1918 binary) Root relaxation: objective 0.000000e+00, 286 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 (286 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 -- 11 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:40 2012 Optimize a model with 1142 rows, 1126 columns and 3800 nonzeros Presolve removed 30 rows and 150 columns Presolve time: 0.00s Presolved: 1112 rows, 976 columns, 3650 nonzeros Variable types: 0 continuous, 976 integer (976 binary) Root relaxation: objective 0.000000e+00, 264 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 (264 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:40 2012 Optimize a model with 569 rows, 565 columns and 1520 nonzeros Presolve removed 187 rows and 217 columns Presolve time: 0.00s Presolved: 382 rows, 348 columns, 1146 nonzeros Variable types: 0 continuous, 348 integer (348 binary) Root relaxation: objective 0.000000e+00, 174 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 0 157 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (609 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 - current bounds on the number of colors: 2 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:40 2012 Optimize a model with 760 rows, 752 columns and 2280 nonzeros Presolve removed 30 rows and 90 columns Presolve time: 0.00s Presolved: 730 rows, 662 columns, 2190 nonzeros Variable types: 0 continuous, 662 integer (662 binary) Root relaxation: objective 0.000000e+00, 294 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 (413 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% optimal solution found: number of colors: 3