-> [Checker] Execute 2: MUTEX_LOCK(mutex: 0, owner:2) (stack depth: 1, state: 1, 0 interleaves)
-> [Checker] Execute 2: MUTEX_WAIT(mutex: 0, owner:2) (stack depth: 2, state: 2, 0 interleaves)
-> [Checker] Execute 2: MUTEX_UNLOCK(mutex: 0, owner:-1) (stack depth: 3, state: 3, 0 interleaves)
-> [Checker] Execute 3: MUTEX_LOCK(mutex: 0, owner:3) (stack depth: 4, state: 4, 0 interleaves)
-> [Checker] Execute 3: MUTEX_WAIT(mutex: 0, owner:3) (stack depth: 5, state: 5, 0 interleaves)
-> [Checker] Execute 3: MUTEX_UNLOCK(mutex: 0, owner:-1) (stack depth: 6, state: 6, 0 interleaves)
-> [Checker] Backtracking from 2;2;2;3;3;3;0
-> [Checker] INDEPENDENT Transitions:
-> [Checker] MUTEX_UNLOCK(mutex: 0, owner:-1) (state=3)
-> [Checker] MUTEX_LOCK(mutex: 0, owner:3) (state=4)
-> [Checker] INDEPENDENT Transitions:
-> [Checker] MUTEX_WAIT(mutex: 0, owner:2) (state=2)
-> [Checker] MUTEX_LOCK(mutex: 0, owner:3) (state=4)
-> [Checker] Dependent Transitions:
-> [Checker] MUTEX_LOCK(mutex: 0, owner:2) (state=1)
-> [Checker] MUTEX_LOCK(mutex: 0, owner:3) (state=4)
-> [Checker] Execute 3: MUTEX_LOCK(mutex: 0, owner:3) (stack depth: 1, state: 1, 0 interleaves)
-> [Checker] Execute 2: MUTEX_LOCK(mutex: 0, owner:3) (stack depth: 2, state: 8, 0 interleaves)
-> [Checker] Execute 3: MUTEX_WAIT(mutex: 0, owner:3) (stack depth: 3, state: 9, 0 interleaves)
-> [Checker] Execute 3: MUTEX_UNLOCK(mutex: 0, owner:2) (stack depth: 4, state: 10, 0 interleaves)
-> [Checker] Execute 2: MUTEX_WAIT(mutex: 0, owner:2) (stack depth: 5, state: 11, 0 interleaves)
-> [Checker] Execute 2: MUTEX_UNLOCK(mutex: 0, owner:-1) (stack depth: 6, state: 12, 0 interleaves)
-> [Checker] Backtracking from 3;2;3;3;2;2;0
+> [Checker] Start a DFS exploration. Reduction is: dpor.
+> [Checker] Execute 1: MUTEX_ASYNC_LOCK(mutex: 0, owner: 1) (stack depth: 1, state: 1, 0 interleaves)
+> [Checker] Execute 1: MUTEX_WAIT(mutex: 0, owner: 1) (stack depth: 2, state: 2, 0 interleaves)
+> [Checker] Execute 1: MUTEX_UNLOCK(mutex: 0, owner: -1) (stack depth: 3, state: 3, 0 interleaves)
+> [Checker] Execute 2: MUTEX_ASYNC_LOCK(mutex: 0, owner: 2) (stack depth: 4, state: 4, 0 interleaves)
+> [Checker] Execute 2: MUTEX_WAIT(mutex: 0, owner: 2) (stack depth: 5, state: 5, 0 interleaves)
+> [Checker] Execute 2: MUTEX_UNLOCK(mutex: 0, owner: -1) (stack depth: 6, state: 6, 0 interleaves)
+> [Checker] Execution came to an end at 1;1;1;2;2;2;0 (state: 7, depth: 7)
+> [Checker] Backtracking from 1;1;1;2;2;2;0