current bounds on the number of colors: 0 -- 133 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:35:58 2012 Optimize a model with 27325 rows, 9190 columns and 90354 nonzeros Presolve time: 0.13s Presolved: 27325 rows, 9190 columns, 90354 nonzeros Variable types: 0 continuous, 9190 integer (9190 binary) Root relaxation: objective 0.000000e+00, 411 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 (688 simplex iterations) in 0.20 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 -- 66 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:35:59 2012 Optimize a model with 13729 rows, 4801 columns and 45177 nonzeros Presolve time: 0.07s Presolved: 13729 rows, 4801 columns, 45177 nonzeros Variable types: 0 continuous, 4801 integer (4801 binary) Root relaxation: objective 0.000000e+00, 378 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 (647 simplex iterations) in 0.10 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 -- 33 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:35:59 2012 Optimize a model with 6725 rows, 2540 columns and 21904 nonzeros Presolve time: 0.02s Presolved: 6725 rows, 2540 columns, 21904 nonzeros Variable types: 0 continuous, 2540 integer (2540 binary) Root relaxation: objective 0.000000e+00, 274 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 (503 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 -- 16 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:35:59 2012 Optimize a model with 3429 rows, 1476 columns and 10952 nonzeros Presolve time: 0.01s Presolved: 3429 rows, 1476 columns, 10952 nonzeros Variable types: 0 continuous, 1476 integer (1476 binary) Root relaxation: objective 0.000000e+00, 296 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 (507 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 18:35:59 2012 Optimize a model with 1781 rows, 944 columns and 5476 nonzeros Presolve time: 0.00s Presolved: 1781 rows, 944 columns, 5476 nonzeros Variable types: 0 continuous, 944 integer (944 binary) Root relaxation: objective 0.000000e+00, 325 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 0 105 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1775 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 -- 4 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:35:59 2012 Optimize a model with 957 rows, 678 columns and 2738 nonzeros Presolve removed 133 rows and 133 columns Presolve time: 0.00s Presolved: 824 rows, 545 columns, 2472 nonzeros Variable types: 0 continuous, 545 integer (545 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 0.00000 0 133 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (559 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 18:35:59 2012 Optimize a model with 1369 rows, 811 columns and 4107 nonzeros Presolve time: 0.00s Presolved: 1369 rows, 811 columns, 4107 nonzeros Variable types: 0 continuous, 811 integer (811 binary) Root relaxation: objective 0.000000e+00, 313 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 0 258 - 0.00000 - - 0s 0 0 0.00000 0 256 - 0.00000 - - 0s 0 0 0.00000 0 246 - 0.00000 - - 0s 0 0 0.00000 0 309 - 0.00000 - - 0s 0 0 0.00000 0 327 - 0.00000 - - 0s 0 0 0.00000 0 320 - 0.00000 - - 0s 0 0 0.00000 0 295 - 0.00000 - - 0s 0 0 0.00000 0 333 - 0.00000 - - 0s 0 0 0.00000 0 333 - 0.00000 - - 0s 0 2 0.00000 0 333 - 0.00000 - - 0s Cutting planes: Zero half: 23 Explored 3 nodes (11647 simplex iterations) in 0.97 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - optimal solution found: number of colors: 4