current bounds on the number of colors: 0 -- 195 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:35 2012 Optimize a model with 18722 rows, 19106 columns and 74496 nonzeros Presolve removed 31 rows and 3007 columns Presolve time: 0.12s Presolved: 18691 rows, 16099 columns, 71489 nonzeros Variable types: 0 continuous, 16099 integer (16099 binary) Root relaxation: objective 0.000000e+00, 295 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 (295 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 -- 97 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:35 2012 Optimize a model with 9363 rows, 9551 columns and 36864 nonzeros Presolve removed 31 rows and 1488 columns Presolve time: 0.08s Presolved: 9332 rows, 8063 columns, 35376 nonzeros Variable types: 0 continuous, 8063 integer (8063 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 (296 simplex iterations) in 0.09 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 Sat Dec 15 16:28:36 2012 Optimize a model with 4779 rows, 4871 columns and 18432 nonzeros Presolve removed 31 rows and 744 columns Presolve time: 0.03s Presolved: 4748 rows, 4127 columns, 17688 nonzeros Variable types: 0 continuous, 4127 integer (4127 binary) Root relaxation: objective 0.000000e+00, 297 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 (297 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 -- 24 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:36 2012 Optimize a model with 2487 rows, 2531 columns and 9216 nonzeros Presolve removed 31 rows and 372 columns Presolve time: 0.01s Presolved: 2456 rows, 2159 columns, 8844 nonzeros Variable types: 0 continuous, 2159 integer (2159 binary) Root relaxation: objective 0.000000e+00, 300 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 (300 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 -- 12 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:36 2012 Optimize a model with 1341 rows, 1361 columns and 4608 nonzeros Presolve removed 31 rows and 186 columns Presolve time: 0.00s Presolved: 1310 rows, 1175 columns, 4422 nonzeros Variable types: 0 continuous, 1175 integer (1175 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 (296 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:36 2012 Optimize a model with 768 rows, 776 columns and 2304 nonzeros Presolve removed 31 rows and 93 columns Presolve time: 0.00s Presolved: 737 rows, 683 columns, 2211 nonzeros Variable types: 0 continuous, 683 integer (683 binary) Root relaxation: objective 0.000000e+00, 301 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 (301 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 16:28:36 2012 Optimize a model with 386 rows, 386 columns and 768 nonzeros Presolve removed 386 rows and 386 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 16:28:36 2012 Optimize a model with 577 rows, 581 columns and 1536 nonzeros Presolve removed 203 rows and 238 columns Presolve time: 0.00s Presolved: 374 rows, 343 columns, 1122 nonzeros Variable types: 0 continuous, 343 integer (343 binary) Root relaxation: objective 0.000000e+00, 170 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 0 153 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (574 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 - optimal solution found: number of colors: 3