current bounds on the number of colors: 0 -- 244 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:45:58 2012 Optimize a model with 37210 rows, 30071 columns and 140666 nonzeros Presolve removed 18 rows and 2196 columns Presolve time: 0.19s Presolved: 37192 rows, 27875 columns, 138470 nonzeros Variable types: 0 continuous, 27875 integer (27875 binary) Root relaxation: objective 0.000000e+00, 456 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 (672 simplex iterations) in 0.25 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 -- 122 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:45:59 2012 Optimize a model with 18727 rows, 15187 columns and 70333 nonzeros Presolve removed 18 rows and 1098 columns Presolve time: 0.13s Presolved: 18709 rows, 14089 columns, 69235 nonzeros Variable types: 0 continuous, 14089 integer (14089 binary) Root relaxation: objective 0.000000e+00, 457 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 (675 simplex iterations) in 0.16 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 -- 61 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:45:59 2012 Optimize a model with 9334 rows, 7623 columns and 34590 nonzeros Presolve removed 18 rows and 540 columns Presolve time: 0.06s Presolved: 9316 rows, 7083 columns, 34050 nonzeros Variable types: 0 continuous, 7083 integer (7083 binary) Root relaxation: objective 0.000000e+00, 446 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 (643 simplex iterations) in 0.08 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 -- 30 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:46:00 2012 Optimize a model with 4789 rows, 3963 columns and 17295 nonzeros Presolve removed 18 rows and 270 columns Presolve time: 0.02s Presolved: 4771 rows, 3693 columns, 17025 nonzeros Variable types: 0 continuous, 3693 integer (3693 binary) Root relaxation: objective 0.000000e+00, 471 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 (471 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 -- 15 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:46:00 2012 Optimize a model with 2365 rows, 2011 columns and 8071 nonzeros Presolve removed 18 rows and 126 columns Presolve time: 0.01s Presolved: 2347 rows, 1885 columns, 7945 nonzeros Variable types: 0 continuous, 1885 integer (1885 binary) Root relaxation: objective 0.000000e+00, 411 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 (411 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 -- 7 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:46:00 2012 Optimize a model with 1153 rows, 1035 columns and 3459 nonzeros Presolve removed 18 rows and 54 columns Presolve time: 0.00s Presolved: 1135 rows, 981 columns, 3405 nonzeros Variable types: 0 continuous, 981 integer (981 binary) Root relaxation: objective 0.000000e+00, 437 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 (656 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 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:46:00 2012 Optimize a model with 547 rows, 547 columns and 1153 nonzeros Presolve removed 547 rows and 547 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 16:46:00 2012 Optimize a model with 850 rows, 791 columns and 2306 nonzeros Presolve removed 250 rows and 271 columns Presolve time: 0.00s Presolved: 600 rows, 520 columns, 1800 nonzeros Variable types: 0 continuous, 520 integer (520 binary) Root relaxation: objective 0.000000e+00, 248 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 0 217 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (819 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