
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 04:25:28 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6476.39.log"
Using license file /Users/sara/gurobi.lic
Academic license - for non-commercial use only - expires 2025-05-12

Gurobi Optimizer version 11.0.1 build v11.0.1rc0 (mac64[x86] - Darwin 21.6.0 21G651)
Copyright (c) 2024, Gurobi Optimization, LLC

Read LP format model from file ./lp_problems/grafo6476.39.lp
Reading time = 0.18 seconds
: 111536 rows, 2178 columns, 336464 nonzeros

CPU model: Intel(R) Core(TM) i5-1038NG7 CPU @ 2.00GHz
Thread count: 4 physical cores, 8 logical processors, using up to 8 threads

Optimize a model with 111536 rows, 2178 columns and 336464 nonzeros
Model fingerprint: 0x2c38392c
Variable types: 46 continuous, 2132 integer (2132 binary)
Coefficient statistics:
  Matrix range     [5e-01, 5e+01]
  Objective range  [1e+00, 1e+00]
  Bounds range     [1e+00, 1e+00]
  RHS range        [1e+00, 5e+01]
Presolve removed 35167 rows and 25 columns
Presolve time: 0.84s
Presolved: 76369 rows, 2153 columns, 231445 nonzeros
Variable types: 0 continuous, 2153 integer (2107 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 2144 rows, 78513 columns, 233598 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   24768    4.5868194e+01   0.000000e+00   1.048109e+04      5s
   44014    4.6000000e+01   0.000000e+00   0.000000e+00      9s
   44014    4.6000000e+01   0.000000e+00   0.000000e+00      9s
   44014    4.6000000e+01   0.000000e+00   0.000000e+00      9s

Root relaxation: objective 4.600000e+01, 44014 iterations, 7.83 seconds (6.27 work units)
Total elapsed time = 16.25s (DegenMoves)

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0   46.00000    0  374    5.00000   46.00000   820%     -   17s
H    0     0                       7.0000000   46.00000   557%     -   17s
H    0     0                      10.0000000   46.00000   360%     -   18s
H    0     0                      12.0000000   46.00000   283%     -   18s
     0     0   46.00000    0  897   12.00000   46.00000   283%     -   33s
     0     0   46.00000    0  835   12.00000   46.00000   283%     -   36s
     0     0   46.00000    0  822   12.00000   46.00000   283%     -   50s

Cutting planes:
  Gomory: 6
  Lift-and-project: 22
  Cover: 9
  Clique: 10
  MIR: 116
  StrongCG: 1
  GUB cover: 1
  Zero half: 25
  RLT: 49
  BQP: 1

Explored 1 nodes (70100 simplex iterations) in 50.11 seconds (44.97 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 12 10 7 5 

Time limit reached
Best objective 1.200000000000e+01, best bound 4.600000000000e+01, gap 283.3333%

Wrote result file './lp_solutions/grafo6476.39.sol'

