current bounds on the number of colors: 0 -- 97 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:49:32 2012 Optimize a model with 22273 rows, 5118 columns and 71184 nonzeros Presolve time: 0.12s Presolved: 22273 rows, 5118 columns, 71184 nonzeros Variable types: 0 continuous, 5118 integer (5118 binary) Root relaxation: objective 0.000000e+00, 298 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 (506 simplex iterations) in 0.17 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 19:49:32 2012 Optimize a model with 11185 rows, 2790 columns and 35592 nonzeros Presolve time: 0.05s Presolved: 11185 rows, 2790 columns, 35592 nonzeros Variable types: 0 continuous, 2790 integer (2790 binary) Root relaxation: objective 0.000000e+00, 227 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 (432 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 19:49:32 2012 Optimize a model with 5641 rows, 1626 columns and 17796 nonzeros Presolve time: 0.02s Presolved: 5641 rows, 1626 columns, 17796 nonzeros Variable types: 0 continuous, 1626 integer (1626 binary) Root relaxation: objective 0.000000e+00, 206 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 (398 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 19:49:32 2012 Optimize a model with 2869 rows, 1044 columns and 8898 nonzeros Presolve time: 0.01s Presolved: 2869 rows, 1044 columns, 8898 nonzeros Variable types: 0 continuous, 1044 integer (1044 binary) Root relaxation: objective 0.000000e+00, 206 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 (476 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 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:49:32 2012 Optimize a model with 1483 rows, 753 columns and 4449 nonzeros Presolve time: 0.00s Presolved: 1483 rows, 753 columns, 4449 nonzeros Variable types: 0 continuous, 753 integer (753 binary) Root relaxation: objective 0.000000e+00, 221 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 0 146 - 0.00000 - - 0s 0 0 0.00000 0 194 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3022 simplex iterations) in 0.20 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 19:49:33 2012 Optimize a model with 1945 rows, 850 columns and 5932 nonzeros Presolve time: 0.00s Presolved: 1945 rows, 850 columns, 5932 nonzeros Variable types: 0 continuous, 850 integer (850 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 0.00000 0 188 - 0.00000 - - 0s 0 0 0.00000 0 166 - 0.00000 - - 0s 0 0 0.00000 0 192 - 0.00000 - - 0s 0 0 0.00000 0 204 - 0.00000 - - 0s 0 0 0.00000 0 166 - 0.00000 - - 0s 0 0 0.00000 0 188 - 0.00000 - - 0s 0 0 0.00000 0 222 - 0.00000 - - 0s 0 0 0.00000 0 232 - 0.00000 - - 1s 0 0 0.00000 0 232 - 0.00000 - - 1s 0 2 0.00000 0 232 - 0.00000 - - 1s Cutting planes: Clique: 8 Zero half: 25 Explored 274 nodes (37672 simplex iterations) in 2.32 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 19:49:35 2012 Optimize a model with 2407 rows, 947 columns and 7415 nonzeros Presolve time: 0.01s Presolved: 2407 rows, 947 columns, 7415 nonzeros Variable types: 0 continuous, 947 integer (947 binary) Root relaxation: objective 0.000000e+00, 208 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 53 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1721 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% optimal solution found: number of colors: 5