current bounds on the number of colors: 0 -- 90 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:45:03 2012 Optimize a model with 18270 rows, 4454 columns and 58590 nonzeros Presolve time: 0.10s Presolved: 18270 rows, 4454 columns, 58590 nonzeros Variable types: 0 continuous, 4454 integer (4454 binary) Root relaxation: objective 0.000000e+00, 253 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 (440 simplex iterations) in 0.14 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 -- 45 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:45:03 2012 Optimize a model with 8978 rows, 2384 columns and 28644 nonzeros Presolve time: 0.03s Presolved: 8978 rows, 2384 columns, 28644 nonzeros Variable types: 0 continuous, 2384 integer (2384 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 (381 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 -- 22 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:45:04 2012 Optimize a model with 4534 rows, 1394 columns and 14322 nonzeros Presolve time: 0.01s Presolved: 4534 rows, 1394 columns, 14322 nonzeros Variable types: 0 continuous, 1394 integer (1394 binary) Root relaxation: objective 0.000000e+00, 184 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 (344 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 -- 11 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:45:04 2012 Optimize a model with 2110 rows, 854 columns and 6510 nonzeros Presolve time: 0.01s Presolved: 2110 rows, 854 columns, 6510 nonzeros Variable types: 0 continuous, 854 integer (854 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 0.00000 0 79 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1542 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 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:45:04 2012 Optimize a model with 898 rows, 584 columns and 2604 nonzeros Presolve removed 90 rows and 90 columns Presolve time: 0.00s Presolved: 808 rows, 494 columns, 2424 nonzeros Variable types: 0 continuous, 494 integer (494 binary) Root relaxation: objective 0.000000e+00, 94 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 90 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (403 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 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:45:04 2012 Optimize a model with 1302 rows, 674 columns and 3906 nonzeros Presolve time: 0.00s Presolved: 1302 rows, 674 columns, 3906 nonzeros Variable types: 0 continuous, 674 integer (674 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 0 130 - 0.00000 - - 0s 0 0 0.00000 0 180 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (2196 simplex iterations) in 0.13 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 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:45:04 2012 Optimize a model with 1706 rows, 764 columns and 5208 nonzeros Presolve time: 0.00s Presolved: 1706 rows, 764 columns, 5208 nonzeros Variable types: 0 continuous, 764 integer (764 binary) Root relaxation: objective 0.000000e+00, 194 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 0 176 - 0.00000 - - 0s 0 0 0.00000 0 184 - 0.00000 - - 0s 0 0 0.00000 0 142 - 0.00000 - - 0s 0 0 0.00000 0 170 - 0.00000 - - 0s 0 0 0.00000 0 155 - 0.00000 - - 0s 0 0 0.00000 0 127 - 0.00000 - - 0s 0 0 0.00000 0 223 - 0.00000 - - 0s 0 0 0.00000 0 208 - 0.00000 - - 0s 0 0 0.00000 0 145 - 0.00000 - - 0s 0 0 0.00000 0 218 - 0.00000 - - 1s 0 0 0.00000 0 218 - 0.00000 - - 1s 0 0 0.00000 0 218 - 0.00000 - - 1s 0 2 0.00000 0 218 - 0.00000 - - 1s Cutting planes: Clique: 3 Zero half: 25 Explored 322 nodes (36552 simplex iterations) in 2.18 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - optimal solution found: number of colors: 5