
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 00:55:58 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7767.40.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/grafo7767.40.lp
Reading time = 0.51 seconds
: 219659 rows, 2385 columns, 661109 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 219659 rows, 2385 columns and 661109 nonzeros
Model fingerprint: 0x54e63e97
Variable types: 49 continuous, 2336 integer (2336 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 87965 rows and 32 columns
Presolve time: 2.31s
Presolved: 131694 rows, 2353 columns, 397549 nonzeros
Variable types: 0 continuous, 2353 integer (2304 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2353 rows, 134047 columns, 399902 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   12303    8.0564851e+01   0.000000e+00   1.870560e+05      5s
   31475    5.5947731e+01   0.000000e+00   1.232000e+05     10s
   49008    5.1847194e+01   0.000000e+00   5.292622e+04     15s
   67818    5.1818441e+01   0.000000e+00   1.999954e+04     20s
   86006    5.1812137e+01   0.000000e+00   1.394267e+02     25s
   92573    5.2000000e+01   0.000000e+00   0.000000e+00     27s
   92573    5.2000000e+01   0.000000e+00   0.000000e+00     27s

Root relaxation: objective 5.200000e+01, 92573 iterations, 24.41 seconds (14.78 work units)

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

     0     0   52.00000    0 1300    7.00000   52.00000   643%     -   50s

Explored 1 nodes (103736 simplex iterations) in 50.05 seconds (37.04 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 7 

Time limit reached
Best objective 7.000000000000e+00, best bound 5.200000000000e+01, gap 642.8571%

Wrote result file './lp_solutions/grafo7767.40.sol'

