current bounds on the number of colors: 0 -- 139 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:39:27 2012 Optimize a model with 33673 rows, 10077 columns and 110193 nonzeros Presolve time: 0.15s Presolved: 33673 rows, 10077 columns, 110193 nonzeros Variable types: 0 continuous, 10077 integer (10077 binary) Root relaxation: objective 0.000000e+00, 434 iterations, 0.02 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 (707 simplex iterations) in 0.22 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 -- 69 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:39:27 2012 Optimize a model with 16663 rows, 5212 columns and 54298 nonzeros Presolve time: 0.08s Presolved: 16663 rows, 5212 columns, 54298 nonzeros Variable types: 0 continuous, 5212 integer (5212 binary) Root relaxation: objective 0.000000e+00, 359 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 (615 simplex iterations) in 0.12 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 -- 34 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:39:27 2012 Optimize a model with 8401 rows, 2849 columns and 27149 nonzeros Presolve time: 0.03s Presolved: 8401 rows, 2849 columns, 27149 nonzeros Variable types: 0 continuous, 2849 integer (2849 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 (524 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 -- 17 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:39:28 2012 Optimize a model with 4027 rows, 1598 columns and 12776 nonzeros Presolve time: 0.01s Presolved: 4027 rows, 1598 columns, 12776 nonzeros Variable types: 0 continuous, 1598 integer (1598 binary) Root relaxation: objective 0.000000e+00, 305 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 (556 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 -- 8 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:39:28 2012 Optimize a model with 2083 rows, 1042 columns and 6388 nonzeros Presolve time: 0.01s Presolved: 2083 rows, 1042 columns, 6388 nonzeros Variable types: 0 continuous, 1042 integer (1042 binary) Root relaxation: objective 0.000000e+00, 330 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 0 118 - 0.00000 - - 0s 0 0 0.00000 0 142 - 0.00000 - - 0s * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (5663 simplex iterations) in 0.29 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 -- 4 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:39:28 2012 Optimize a model with 1111 rows, 764 columns and 3194 nonzeros Presolve removed 139 rows and 139 columns Presolve time: 0.00s Presolved: 972 rows, 625 columns, 2916 nonzeros Variable types: 0 continuous, 625 integer (625 binary) Root relaxation: objective 0.000000e+00, 149 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 0 139 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (579 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 -- 4 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:39:28 2012 Optimize a model with 1597 rows, 903 columns and 4791 nonzeros Presolve time: 0.00s Presolved: 1597 rows, 903 columns, 4791 nonzeros Variable types: 0 continuous, 903 integer (903 binary) Root relaxation: objective 0.000000e+00, 311 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 0 270 - 0.00000 - - 0s 0 0 0.00000 0 274 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (2817 simplex iterations) in 0.18 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: 4