current bounds on the number of colors: 0 -- 156 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:20:45 2012 Optimize a model with 9828 rows, 12292 columns and 41184 nonzeros Presolve removed 30 rows and 2340 columns Presolve time: 0.11s Presolved: 9798 rows, 9952 columns, 38844 nonzeros Variable types: 0 continuous, 9952 integer (9952 binary) Root relaxation: objective 0.000000e+00, 212 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 (212 simplex iterations) in 0.12 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 -- 78 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:20:46 2012 Optimize a model with 4992 rows, 6208 columns and 20592 nonzeros Presolve removed 30 rows and 1170 columns Presolve time: 0.04s Presolved: 4962 rows, 5038 columns, 19422 nonzeros Variable types: 0 continuous, 5038 integer (5038 binary) Root relaxation: objective 0.000000e+00, 212 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 (212 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 -- 39 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:20:46 2012 Optimize a model with 2512 rows, 3088 columns and 10032 nonzeros Presolve removed 30 rows and 570 columns Presolve time: 0.01s Presolved: 2482 rows, 2518 columns, 9462 nonzeros Variable types: 0 continuous, 2518 integer (2518 binary) Root relaxation: objective 0.000000e+00, 212 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 (212 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 -- 19 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:20:46 2012 Optimize a model with 1272 rows, 1528 columns and 4752 nonzeros Presolve removed 30 rows and 270 columns Presolve time: 0.01s Presolved: 1242 rows, 1258 columns, 4482 nonzeros Variable types: 0 continuous, 1258 integer (1258 binary) Root relaxation: objective 0.000000e+00, 223 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 (223 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 16:20:46 2012 Optimize a model with 652 rows, 748 columns and 2112 nonzeros Presolve removed 30 rows and 120 columns Presolve time: 0.00s Presolved: 622 rows, 628 columns, 1992 nonzeros Variable types: 0 continuous, 628 integer (628 binary) Root relaxation: objective 0.000000e+00, 196 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 (196 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 16:20:46 2012 Optimize a model with 404 rows, 436 columns and 1056 nonzeros Presolve removed 164 rows and 198 columns Presolve time: 0.00s Presolved: 240 rows, 238 columns, 720 nonzeros Variable types: 0 continuous, 238 integer (238 binary) Root relaxation: objective 0.000000e+00, 127 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 98 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (368 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 16:20:46 2012 Optimize a model with 528 rows, 592 columns and 1584 nonzeros Presolve removed 30 rows and 90 columns Presolve time: 0.00s Presolved: 498 rows, 502 columns, 1494 nonzeros Variable types: 0 continuous, 502 integer (502 binary) Root relaxation: objective 0.000000e+00, 202 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 (202 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