current bounds on the number of colors: 0 -- 96 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:49:17 2012 Optimize a model with 24240 rows, 5111 columns and 77040 nonzeros Presolve time: 0.13s Presolved: 24240 rows, 5111 columns, 77040 nonzeros Variable types: 0 continuous, 5111 integer (5111 binary) Root relaxation: objective 0.000000e+00, 304 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 (512 simplex iterations) in 0.18 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 -- 48 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:49:17 2012 Optimize a model with 12168 rows, 2807 columns and 38520 nonzeros Presolve time: 0.05s Presolved: 12168 rows, 2807 columns, 38520 nonzeros Variable types: 0 continuous, 2807 integer (2807 binary) Root relaxation: objective 0.000000e+00, 204 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 (384 simplex iterations) in 0.07 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 -- 24 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:49:18 2012 Optimize a model with 6132 rows, 1655 columns and 19260 nonzeros Presolve time: 0.02s Presolved: 6132 rows, 1655 columns, 19260 nonzeros Variable types: 0 continuous, 1655 integer (1655 binary) Root relaxation: objective 0.000000e+00, 195 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 (383 simplex iterations) in 0.03 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 -- 12 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:49:18 2012 Optimize a model with 3114 rows, 1079 columns and 9630 nonzeros Presolve time: 0.01s Presolved: 3114 rows, 1079 columns, 9630 nonzeros Variable types: 0 continuous, 1079 integer (1079 binary) Root relaxation: objective 0.000000e+00, 216 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 (697 simplex iterations) in 0.03 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 Thu Dec 13 19:49:18 2012 Optimize a model with 1605 rows, 791 columns and 4815 nonzeros Presolve time: 0.00s Presolved: 1605 rows, 791 columns, 4815 nonzeros Variable types: 0 continuous, 791 integer (791 binary) Root relaxation: objective 0.000000e+00, 226 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 0 158 - 0.00000 - - 0s 0 0 0.00000 0 188 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (2698 simplex iterations) in 0.19 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: 3 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:49:18 2012 Optimize a model with 2108 rows, 887 columns and 6420 nonzeros Presolve time: 0.01s Presolved: 2108 rows, 887 columns, 6420 nonzeros Variable types: 0 continuous, 887 integer (887 binary) Root relaxation: objective 0.000000e+00, 202 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 0 184 - 0.00000 - - 0s 0 0 0.00000 0 166 - 0.00000 - - 0s 0 0 0.00000 0 264 - 0.00000 - - 0s 0 0 0.00000 0 277 - 0.00000 - - 0s 0 0 0.00000 0 267 - 0.00000 - - 0s 0 0 0.00000 0 260 - 0.00000 - - 0s 0 0 0.00000 0 269 - 0.00000 - - 1s 0 0 0.00000 0 267 - 0.00000 - - 1s 0 0 0.00000 0 266 - 0.00000 - - 1s 0 0 0.00000 0 266 - 0.00000 - - 1s 0 0 0.00000 0 254 - 0.00000 - - 2s 0 0 0.00000 0 252 - 0.00000 - - 2s 0 0 0.00000 0 257 - 0.00000 - - 2s 0 0 0.00000 0 257 - 0.00000 - - 2s 0 2 0.00000 0 257 - 0.00000 - - 3s Cutting planes: Clique: 11 Zero half: 30 Explored 58 nodes (31914 simplex iterations) in 3.61 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: 4 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:49:22 2012 Optimize a model with 2611 rows, 983 columns and 8025 nonzeros Presolve time: 0.01s Presolved: 2611 rows, 983 columns, 8025 nonzeros Variable types: 0 continuous, 983 integer (983 binary) Root relaxation: objective 0.000000e+00, 205 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 0 147 - 0.00000 - - 0s 0 0 0.00000 0 133 - 0.00000 - - 0s 0 0 0.00000 0 124 - 0.00000 - - 0s 0 0 0.00000 0 181 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Cutting planes: Gomory: 2 Clique: 2 Zero half: 3 Explored 0 nodes (6861 simplex iterations) in 0.53 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: 5