current bounds on the number of colors: 0 -- 121 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:37 2012 Optimize a model with 4501 rows, 7333 columns and 20400 nonzeros Presolve removed 32 rows and 1920 columns Presolve time: 0.06s Presolved: 4469 rows, 5413 columns, 18480 nonzeros Variable types: 0 continuous, 5413 integer (5413 binary) Root relaxation: objective 0.000000e+00, 144 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 (144 simplex iterations) in 0.06 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 -- 60 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:38 2012 Optimize a model with 2311 rows, 3703 columns and 10200 nonzeros Presolve removed 32 rows and 960 columns Presolve time: 0.02s Presolved: 2279 rows, 2743 columns, 9240 nonzeros Variable types: 0 continuous, 2743 integer (2743 binary) Root relaxation: objective 0.000000e+00, 144 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 (144 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 -- 30 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:38 2012 Optimize a model with 1216 rows, 1888 columns and 5100 nonzeros Presolve removed 32 rows and 480 columns Presolve time: 0.01s Presolved: 1184 rows, 1408 columns, 4620 nonzeros Variable types: 0 continuous, 1408 integer (1408 binary) Root relaxation: objective 0.000000e+00, 153 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 (215 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 -- 15 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:38 2012 Optimize a model with 632 rows, 920 columns and 2380 nonzeros Presolve removed 32 rows and 224 columns Presolve time: 0.00s Presolved: 600 rows, 696 columns, 2156 nonzeros Variable types: 0 continuous, 696 integer (696 binary) Root relaxation: objective 0.000000e+00, 138 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 (138 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 -- 7 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:38 2012 Optimize a model with 340 rows, 436 columns and 1020 nonzeros Presolve removed 32 rows and 96 columns Presolve time: 0.00s Presolved: 308 rows, 340 columns, 924 nonzeros Variable types: 0 continuous, 340 integer (340 binary) Root relaxation: objective 0.000000e+00, 125 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 (125 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 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:38 2012 Optimize a model with 194 rows, 194 columns and 340 nonzeros Presolve removed 194 rows and 194 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 16:16:38 2012 Optimize a model with 267 rows, 315 columns and 680 nonzeros Presolve removed 141 rows and 183 columns Presolve time: 0.00s Presolved: 126 rows, 132 columns, 378 nonzeros Variable types: 0 continuous, 132 integer (132 binary) Root relaxation: objective 0.000000e+00, 63 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 34 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (185 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 - optimal solution found: number of colors: 3