current bounds on the number of colors: 0 -- 170 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:23:12 2012 Optimize a model with 13260 rows, 14604 columns and 53720 nonzeros Presolve removed 24 rows and 2040 columns Presolve time: 0.11s Presolved: 13236 rows, 12564 columns, 51680 nonzeros Variable types: 0 continuous, 12564 integer (12564 binary) Root relaxation: objective 0.000000e+00, 259 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 (394 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 -- 85 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:23:13 2012 Optimize a model with 6638 rows, 7294 columns and 26544 nonzeros Presolve removed 24 rows and 1008 columns Presolve time: 0.06s Presolved: 6614 rows, 6286 columns, 25536 nonzeros Variable types: 0 continuous, 6286 integer (6286 binary) Root relaxation: objective 0.000000e+00, 258 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 (388 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 -- 42 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:23:13 2012 Optimize a model with 3404 rows, 3724 columns and 13272 nonzeros Presolve removed 24 rows and 504 columns Presolve time: 0.02s Presolved: 3380 rows, 3220 columns, 12768 nonzeros Variable types: 0 continuous, 3220 integer (3220 binary) Root relaxation: objective 0.000000e+00, 260 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 (370 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 -- 21 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:23:13 2012 Optimize a model with 1710 rows, 1854 columns and 6320 nonzeros Presolve removed 24 rows and 240 columns Presolve time: 0.01s Presolved: 1686 rows, 1614 columns, 6080 nonzeros Variable types: 0 continuous, 1614 integer (1614 binary) Root relaxation: objective 0.000000e+00, 260 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 (260 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 -- 10 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:23:13 2012 Optimize a model with 940 rows, 1004 columns and 3160 nonzeros Presolve removed 24 rows and 120 columns Presolve time: 0.00s Presolved: 916 rows, 884 columns, 3040 nonzeros Variable types: 0 continuous, 884 integer (884 binary) Root relaxation: objective 0.000000e+00, 242 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 (242 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:23:13 2012 Optimize a model with 478 rows, 494 columns and 1264 nonzeros Presolve removed 178 rows and 206 columns Presolve time: 0.00s Presolved: 300 rows, 288 columns, 900 nonzeros Variable types: 0 continuous, 288 integer (288 binary) Root relaxation: objective 0.000000e+00, 169 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 0 135 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (486 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 - current bounds on the number of colors: 2 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:23:13 2012 Optimize a model with 632 rows, 664 columns and 1896 nonzeros Presolve removed 24 rows and 72 columns Presolve time: 0.00s Presolved: 608 rows, 592 columns, 1824 nonzeros Variable types: 0 continuous, 592 integer (592 binary) Root relaxation: objective 0.000000e+00, 241 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 (329 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