
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 05:37:19 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7486.42.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/grafo7486.42.lp
Reading time = 0.16 seconds
: 103018 rows, 2545 columns, 311350 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 103018 rows, 2545 columns and 311350 nonzeros
Model fingerprint: 0xe227ace1
Variable types: 52 continuous, 2493 integer (2493 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 -0.0000000
Presolve removed 20970 rows and 36 columns
Presolve time: 0.71s
Presolved: 82048 rows, 2509 columns, 248899 nonzeros
Variable types: 0 continuous, 2509 integer (2457 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 2506 rows, 84554 columns, 251408 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   19837    5.1607388e+01   0.000000e+00   3.018552e+04      5s
   40477    5.1585201e+01   0.000000e+00   5.723914e+03     10s
   61868    5.1579908e+01   0.000000e+00   1.736212e+02     15s
   68120    5.2000000e+01   0.000000e+00   0.000000e+00     17s
   68120    5.2000000e+01   0.000000e+00   0.000000e+00     17s
   68120    5.2000000e+01   0.000000e+00   0.000000e+00     17s

Root relaxation: objective 5.200000e+01, 68120 iterations, 15.74 seconds (14.20 work units)
Total elapsed time = 34.19s (DegenMoves)

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

     0     0   52.00000    0  875    5.00000   52.00000   940%     -   50s

Explored 1 nodes (95298 simplex iterations) in 50.02 seconds (59.71 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 5 -0 

Time limit reached
Best objective 5.000000000000e+00, best bound 5.200000000000e+01, gap 940.0000%

Wrote result file './lp_solutions/grafo7486.42.sol'

