
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 01:03:32 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2235.41.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/grafo2235.41.lp
Reading time = 0.33 seconds
: 154813 rows, 2882 columns, 467280 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 154813 rows, 2882 columns and 467280 nonzeros
Model fingerprint: 0xcf2ffdd7
Variable types: 56 continuous, 2826 integer (2826 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, 6e+01]
Presolve removed 43830 rows and 29 columns
Presolve time: 1.46s
Presolved: 110983 rows, 2853 columns, 336409 nonzeros
Variable types: 0 continuous, 2853 integer (2797 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2853 rows, 113836 columns, 339262 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   14713    6.2852938e+01   0.000000e+00   5.919253e+05      5s
   29762    6.2705296e+01   0.000000e+00   4.633648e+04     10s
   45256    6.2617235e+01   0.000000e+00   3.908950e+04     15s
   59764    6.2598863e+01   0.000000e+00   1.385705e+04     20s
   74272    6.2594007e+01   0.000000e+00   8.447625e+01     25s
   76008    6.3000000e+01   0.000000e+00   0.000000e+00     26s
   76008    6.3000000e+01   0.000000e+00   0.000000e+00     26s

Root relaxation: objective 6.300000e+01, 76008 iterations, 24.13 seconds (14.71 work units)
Total elapsed time = 48.26s (DegenMoves)

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

     0     0   63.00000    0  892    7.00000   63.00000   800%     -   50s

Explored 1 nodes (90406 simplex iterations) in 50.06 seconds (36.81 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 7 

Time limit reached
Best objective 7.000000000000e+00, best bound 6.300000000000e+01, gap 800.0000%

Wrote result file './lp_solutions/grafo2235.41.sol'

