R1 Thread 1026 try a->acquire();
R1 Thread 1026 try b->acquire();
R2 Thread 2051 try b->acquire();
R1 Thread 1026 try a->release();
R1 Thread 1026 try b->release();
R2 Thread 2051 try c->acquire();
R2 Thread 2051 try c->release();
R2 Thread 2051 try b->release();
R4 Thread 3076 try c->acquire();
R4 Thread 3076 try a->acquire();
R4 Thread 3076 try c->release();
R4 Thread 3076 try a->release();
see potential deadlock

Example 2: Output with potential deadlock.