current bounds on the number of colors: 0 -- 195 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:36 2012 Optimize a model with 20759 rows, 19127 columns and 80607 nonzeros Presolve removed 26 rows and 2522 columns Presolve time: 0.13s Presolved: 20733 rows, 16605 columns, 78085 nonzeros Variable types: 0 continuous, 16605 integer (16605 binary) Root relaxation: objective 0.000000e+00, 313 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 (313 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 16:28:37 2012 Optimize a model with 10371 rows, 9572 columns and 39888 nonzeros Presolve removed 26 rows and 1248 columns Presolve time: 0.09s Presolved: 10345 rows, 8324 columns, 38640 nonzeros Variable types: 0 continuous, 8324 integer (8324 binary) Root relaxation: objective 0.000000e+00, 314 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 (314 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 16:28:37 2012 Optimize a model with 5283 rows, 4892 columns and 19944 nonzeros Presolve removed 26 rows and 624 columns Presolve time: 0.03s Presolved: 5257 rows, 4268 columns, 19320 nonzeros Variable types: 0 continuous, 4268 integer (4268 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 16:28:37 2012 Optimize a model with 2739 rows, 2552 columns and 9972 nonzeros Presolve removed 26 rows and 312 columns Presolve time: 0.01s Presolved: 2713 rows, 2240 columns, 9660 nonzeros Variable types: 0 continuous, 2240 integer (2240 binary) Root relaxation: objective 0.000000e+00, 306 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 (306 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 16:28:37 2012 Optimize a model with 1467 rows, 1382 columns and 4986 nonzeros Presolve removed 26 rows and 156 columns Presolve time: 0.00s Presolved: 1441 rows, 1226 columns, 4830 nonzeros Variable types: 0 continuous, 1226 integer (1226 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:28:37 2012 Optimize a model with 831 rows, 797 columns and 2493 nonzeros Presolve removed 26 rows and 78 columns Presolve time: 0.00s Presolved: 805 rows, 719 columns, 2415 nonzeros Variable types: 0 continuous, 719 integer (719 binary) Root relaxation: objective 0.000000e+00, 324 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 (451 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 16:28:37 2012 Optimize a model with 407 rows, 407 columns and 831 nonzeros Presolve removed 407 rows and 407 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 16:28:37 2012 Optimize a model with 619 rows, 602 columns and 1662 nonzeros Presolve removed 201 rows and 230 columns Presolve time: 0.00s Presolved: 418 rows, 372 columns, 1254 nonzeros Variable types: 0 continuous, 372 integer (372 binary) Root relaxation: objective 0.000000e+00, 176 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 0 163 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (592 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