
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 06:35:36 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6934.41.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/grafo6934.41.lp
Reading time = 0.14 seconds
: 85972 rows, 2047 columns, 259489 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 85972 rows, 2047 columns and 259489 nonzeros
Model fingerprint: 0xb410f465
Variable types: 44 continuous, 2003 integer (2003 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]
Found heuristic solution: objective 1.0000000
Presolve removed 21542 rows and 42 columns
Presolve time: 0.57s
Presolved: 64430 rows, 2005 columns, 195214 nonzeros
Variable types: 0 continuous, 2005 integer (1961 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2005 rows, 66435 columns, 197219 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   28264    3.6832895e+01   0.000000e+00   1.030601e+02      5s
   28962    3.7000000e+01   0.000000e+00   0.000000e+00      5s
   28962    3.7000000e+01   0.000000e+00   0.000000e+00      5s

Root relaxation: objective 3.700000e+01, 28962 iterations, 4.53 seconds (3.63 work units)
Total elapsed time = 16.86s (DegenMoves)

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

     0     0   37.00000    0  590    7.00000   37.00000   429%     -   18s
H    0     0                       8.0000000   37.00000   362%     -   20s
     0     0   37.00000    0  800    8.00000   37.00000   362%     -   29s
     0     0   37.00000    0  767    8.00000   37.00000   362%     -   31s
     0     0   37.00000    0  833    8.00000   37.00000   362%     -   50s

Cutting planes:
  Gomory: 2
  Lift-and-project: 21
  Cover: 11
  Clique: 19
  MIR: 103
  Zero half: 62
  RLT: 45
  BQP: 1

Explored 1 nodes (60673 simplex iterations) in 50.10 seconds (43.80 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 8 7 1 

Time limit reached
Best objective 8.000000000000e+00, best bound 3.700000000000e+01, gap 362.5000%

Wrote result file './lp_solutions/grafo6934.41.sol'

