
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 01:43:11 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7420.41.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/grafo7420.41.lp
Reading time = 0.48 seconds
: 249907 rows, 2755 columns, 752398 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 249907 rows, 2755 columns and 752398 nonzeros
Model fingerprint: 0x682d3009
Variable types: 53 continuous, 2702 integer (2702 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 97777 rows and 12 columns
Presolve time: 2.10s
Presolved: 152130 rows, 2743 columns, 459484 nonzeros
Variable types: 0 continuous, 2743 integer (2690 binary)
Found heuristic solution: objective 10.0000000
Root relaxation presolved: 2735 rows, 154865 columns, 462227 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   12644    8.8322812e+01   0.000000e+00   9.000417e+06      5s
   30226    5.5209872e+01   0.000000e+00   1.538735e+05     10s
   44518    5.4635681e+01   0.000000e+00   8.519289e+04     15s
   60313    5.4598862e+01   0.000000e+00   2.961442e+04     20s
   76579    5.4582891e+01   0.000000e+00   2.670140e+04     25s
   92172    5.4574167e+01   0.000000e+00   1.254297e+04     30s
  109080    5.4570508e+01   0.000000e+00   2.571405e+03     35s
  124716    5.4570029e+01   0.000000e+00   2.295251e-02     40s
  124844    5.5000000e+01   0.000000e+00   0.000000e+00     40s
  124844    5.5000000e+01   0.000000e+00   0.000000e+00     40s
  124844    5.5000000e+01   0.000000e+00   0.000000e+00     40s

Root relaxation: objective 5.500000e+01, 124844 iterations, 37.72 seconds (22.82 work units)

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

     0     0   55.00000    0 1617   10.00000   55.00000   450%     -   50s

Explored 1 nodes (128626 simplex iterations) in 50.08 seconds (33.60 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 10 

Time limit reached
Best objective 1.000000000000e+01, best bound 5.500000000000e+01, gap 450.0000%

Wrote result file './lp_solutions/grafo7420.41.sol'

