Set parameter Username
Set parameter LogFile to value "t_puzzle.log"

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Warning: your license will expire in 14 days
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Academic license - for non-commercial use only - expires 2022-02-07
Using license file /home/burkardt/gurobi.lic

Gurobi Optimizer version 9.5.0 build v9.5.0rc5 (linux64)
Copyright (c) 2021, Gurobi Optimization, LLC

Read LP format model from file t_puzzle.lp
Reading time = 0.01 seconds
: 220 rows, 218 columns, 7022 nonzeros
Thread count: 4 physical cores, 8 logical processors, using up to 8 threads
Optimize a model with 220 rows, 218 columns and 7022 nonzeros
Model fingerprint: 0x9f1b4ec8
Variable types: 0 continuous, 218 integer (218 binary)
Coefficient statistics:
  Matrix range     [1e+00, 1e+00]
  Objective range  [0e+00, 0e+00]
  Bounds range     [1e+00, 1e+00]
  RHS range        [1e+00, 1e+00]
Presolve removed 220 rows and 218 columns
Presolve time: 0.01s
Presolve: All rows and columns removed

Explored 0 nodes (0 simplex iterations) in 0.01 seconds (0.00 work units)
Thread count was 1 (of 8 available processors)

Solution count 1: -0 
No other solutions better than -0

Optimal solution found (tolerance 1.00e-04)
Best objective -0.000000000000e+00, best bound -0.000000000000e+00, gap 0.0000%

Wrote result file 't_puzzle.sol'