current bounds on the number of colors: 0 -- 245 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:46:20 2012 Optimize a model with 36357 rows, 30186 columns and 138226 nonzeros Presolve removed 22 rows and 2684 columns Presolve time: 0.18s Presolved: 36335 rows, 27502 columns, 135542 nonzeros Variable types: 0 continuous, 27502 integer (27502 binary) Root relaxation: objective 0.000000e+00, 433 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 (433 simplex iterations) in 0.22 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 16:46:21 2012 Optimize a model with 18301 rows, 15241 columns and 69113 nonzeros Presolve removed 22 rows and 1342 columns Presolve time: 0.13s Presolved: 18279 rows, 13899 columns, 67771 nonzeros Variable types: 0 continuous, 13899 integer (13899 binary) Root relaxation: objective 0.000000e+00, 431 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 (431 simplex iterations) in 0.15 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 16:46:21 2012 Optimize a model with 9125 rows, 7646 columns and 33990 nonzeros Presolve removed 22 rows and 660 columns Presolve time: 0.06s Presolved: 9103 rows, 6986 columns, 33330 nonzeros Variable types: 0 continuous, 6986 integer (6986 binary) Root relaxation: objective 0.000000e+00, 435 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 (435 simplex iterations) in 0.07 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 16:46:22 2012 Optimize a model with 4685 rows, 3971 columns and 16995 nonzeros Presolve removed 22 rows and 330 columns Presolve time: 0.02s Presolved: 4663 rows, 3641 columns, 16665 nonzeros Variable types: 0 continuous, 3641 integer (3641 binary) Root relaxation: objective 0.000000e+00, 460 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 (731 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 16:46:22 2012 Optimize a model with 2317 rows, 2011 columns and 7931 nonzeros Presolve removed 22 rows and 154 columns Presolve time: 0.01s Presolved: 2295 rows, 1857 columns, 7777 nonzeros Variable types: 0 continuous, 1857 integer (1857 binary) Root relaxation: objective 0.000000e+00, 427 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 (427 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 16:46:22 2012 Optimize a model with 1133 rows, 1031 columns and 3399 nonzeros Presolve removed 22 rows and 66 columns Presolve time: 0.00s Presolved: 1111 rows, 965 columns, 3333 nonzeros Variable types: 0 continuous, 965 integer (965 binary) Root relaxation: objective 0.000000e+00, 432 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 (707 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 16:46:22 2012 Optimize a model with 541 rows, 541 columns and 1133 nonzeros Presolve removed 541 rows and 541 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 16:46:22 2012 Optimize a model with 837 rows, 786 columns and 2266 nonzeros Presolve removed 247 rows and 270 columns Presolve time: 0.00s Presolved: 590 rows, 516 columns, 1770 nonzeros Variable types: 0 continuous, 516 integer (516 binary) Root relaxation: objective 0.000000e+00, 244 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 0 221 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (823 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