current bounds on the number of colors: 0 -- 195 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:44 2012 Optimize a model with 19595 rows, 19115 columns and 77115 nonzeros Presolve removed 22 rows and 2134 columns Presolve time: 0.12s Presolved: 19573 rows, 16981 columns, 74981 nonzeros Variable types: 0 continuous, 16981 integer (16981 binary) Root relaxation: objective 0.000000e+00, 315 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 (315 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 16:28:45 2012 Optimize a model with 9795 rows, 9560 columns and 38160 nonzeros Presolve removed 22 rows and 1056 columns Presolve time: 0.09s Presolved: 9773 rows, 8504 columns, 37104 nonzeros Variable types: 0 continuous, 8504 integer (8504 binary) Root relaxation: objective 0.000000e+00, 312 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 (312 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 -- 48 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:45 2012 Optimize a model with 4995 rows, 4880 columns and 19080 nonzeros Presolve removed 22 rows and 528 columns Presolve time: 0.03s Presolved: 4973 rows, 4352 columns, 18552 nonzeros Variable types: 0 continuous, 4352 integer (4352 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (313 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 -- 24 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:45 2012 Optimize a model with 2595 rows, 2540 columns and 9540 nonzeros Presolve removed 22 rows and 264 columns Presolve time: 0.01s Presolved: 2573 rows, 2276 columns, 9276 nonzeros Variable types: 0 continuous, 2276 integer (2276 binary) Root relaxation: objective 0.000000e+00, 322 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 (322 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 16:28:45 2012 Optimize a model with 1395 rows, 1370 columns and 4770 nonzeros Presolve removed 22 rows and 132 columns Presolve time: 0.00s Presolved: 1373 rows, 1238 columns, 4638 nonzeros Variable types: 0 continuous, 1238 integer (1238 binary) Root relaxation: objective 0.000000e+00, 302 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 (302 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 16:28:45 2012 Optimize a model with 795 rows, 785 columns and 2385 nonzeros Presolve removed 22 rows and 66 columns Presolve time: 0.00s Presolved: 773 rows, 719 columns, 2319 nonzeros Variable types: 0 continuous, 719 integer (719 binary) Root relaxation: objective 0.000000e+00, 281 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 (281 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 16:28:45 2012 Optimize a model with 395 rows, 395 columns and 795 nonzeros Presolve removed 395 rows and 395 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 16:28:45 2012 Optimize a model with 595 rows, 590 columns and 1590 nonzeros Presolve removed 201 rows and 226 columns Presolve time: 0.00s Presolved: 394 rows, 364 columns, 1182 nonzeros Variable types: 0 continuous, 364 integer (364 binary) Root relaxation: objective 0.000000e+00, 186 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 0 157 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (598 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