
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 05:03:15 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3562.40.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/grafo3562.40.lp
Reading time = 0.29 seconds
: 181381 rows, 2577 columns, 546563 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 181381 rows, 2577 columns and 546563 nonzeros
Model fingerprint: 0x5b5310b5
Variable types: 52 continuous, 2525 integer (2525 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 65518 rows and 21 columns
Presolve time: 1.22s
Presolved: 115863 rows, 2556 columns, 350419 nonzeros
Variable types: 0 continuous, 2556 integer (2504 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2550 rows, 118413 columns, 352975 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   18239    6.1827198e+01   0.000000e+00   7.850012e+04      5s
   39829    5.9715085e+01   0.000000e+00   3.429958e+04     10s
   61879    5.9697834e+01   0.000000e+00   2.761045e+03     15s
   70273    6.0000000e+01   0.000000e+00   0.000000e+00     17s
   70273    6.0000000e+01   0.000000e+00   0.000000e+00     17s
   70273    6.0000000e+01   0.000000e+00   0.000000e+00     17s

Root relaxation: objective 6.000000e+01, 70273 iterations, 15.66 seconds (11.99 work units)
Total elapsed time = 38.73s (DegenMoves)

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

     0     0   60.00000    0  832    7.00000   60.00000   757%     -   50s

Explored 1 nodes (91682 simplex iterations) in 50.04 seconds (56.46 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 7 

Time limit reached
Best objective 7.000000000000e+00, best bound 6.000000000000e+01, gap 757.1429%

Wrote result file './lp_solutions/grafo3562.40.sol'

