current bounds on the number of colors: 0 -- 150 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:53 2012 Optimize a model with 9225 rows, 11371 columns and 38475 nonzeros Presolve removed 25 rows and 1875 columns Presolve time: 0.11s Presolved: 9200 rows, 9496 columns, 36600 nonzeros Variable types: 0 continuous, 9496 integer (9496 binary) Root relaxation: objective 0.000000e+00, 219 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 (327 simplex iterations) in 0.13 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 -- 75 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:54 2012 Optimize a model with 4627 rows, 5671 columns and 18981 nonzeros Presolve removed 25 rows and 925 columns Presolve time: 0.04s Presolved: 4602 rows, 4746 columns, 18056 nonzeros Variable types: 0 continuous, 4746 integer (4746 binary) Root relaxation: objective 0.000000e+00, 220 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 (328 simplex iterations) in 0.05 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 -- 37 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:54 2012 Optimize a model with 2328 rows, 2821 columns and 9234 nonzeros Presolve removed 25 rows and 450 columns Presolve time: 0.01s Presolved: 2303 rows, 2371 columns, 8784 nonzeros Variable types: 0 continuous, 2371 integer (2371 binary) Root relaxation: objective 0.000000e+00, 222 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 (325 simplex iterations) in 0.02 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 -- 18 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:54 2012 Optimize a model with 1239 rows, 1471 columns and 4617 nonzeros Presolve removed 25 rows and 225 columns Presolve time: 0.01s Presolved: 1214 rows, 1246 columns, 4392 nonzeros Variable types: 0 continuous, 1246 integer (1246 binary) Root relaxation: objective 0.000000e+00, 216 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 (309 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 -- 9 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:54 2012 Optimize a model with 634 rows, 721 columns and 2052 nonzeros Presolve removed 25 rows and 100 columns Presolve time: 0.00s Presolved: 609 rows, 621 columns, 1952 nonzeros Variable types: 0 continuous, 621 integer (621 binary) Root relaxation: objective 0.000000e+00, 185 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 (244 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 -- 4 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:54 2012 Optimize a model with 392 rows, 421 columns and 1026 nonzeros Presolve removed 158 rows and 187 columns Presolve time: 0.00s Presolved: 234 rows, 234 columns, 702 nonzeros Variable types: 0 continuous, 234 integer (234 binary) Root relaxation: objective 0.000000e+00, 120 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 95 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (345 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound 1.000000000000e+00, gap - current bounds on the number of colors: 2 -- 4 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:54 2012 Optimize a model with 513 rows, 571 columns and 1539 nonzeros Presolve removed 25 rows and 75 columns Presolve time: 0.00s Presolved: 488 rows, 496 columns, 1464 nonzeros Variable types: 0 continuous, 496 integer (496 binary) Root relaxation: objective 0.000000e+00, 200 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 (200 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% optimal solution found: number of colors: 3