1 2before lock #1 3before lock #2 4before lock #3 5before unlock #1 6before unlock #2 7before unlock #3 8before unlock #4 9Mutex not locked by calling thread: mutex 0x........, recursion count 0, owner 1. 10 at 0x........: pthread_mutex_unlock (drd_pthread_intercepts.c:?) 11 by 0x........: nearly_main (tc10_rec_lock.c:42) 12 by 0x........: main (tc10_rec_lock.c:47) 13mutex 0x........ was first observed at: 14 at 0x........: pthread_mutex_init (drd_pthread_intercepts.c:?) 15 by 0x........: nearly_main (tc10_rec_lock.c:24) 16 by 0x........: main (tc10_rec_lock.c:47) 17 18 19ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 0 from 0) 20