Need explanation of an ouput

[domainexpert]

After clicking the "Analyze" button on the web interface, I've got the following report. How do I read it? Thanks in advance.

Behaviors

2 behaviors cover the possibilities (assuming enough gas).

back fwd
Behavior 0

under conditions:

    (value of this call) is not zero.

hits an unimplemented instruction UNKNOWN fd in this analyzer.
Behavior 1

under conditions:

    (value of this call) is zero.

returns with output
(take (0x1bd6) bytes at (0x0) from
(codecopy mem: (0x0), code: (0xd4), size: (0x1bd6), on
(mem_write32 addr: (0x20) val: (0x1) in
(mem_write32 addr: (0x0) val: ((0xffffffffffffffffffffffffffffffffffffffff) and ((0xffffffffffffffffffffffffffffffffffffffff) and (address of caller))) in
(mem_write32 addr: (0x40) val: (0x60) in
(empty)
)
)
)
)
)
and state {
last instruction: PUSH_N0x00
stack: [(0x0), (0x1bd6)](size 2)
memory:
(codecopy mem: (0x0), code: (0xd4), size: (0x1bd6), on
(mem_write32 addr: (0x20) val: (0x1) in
(mem_write32 addr: (0x0) val: ((0xffffffffffffffffffffffffffffffffffffffff) and ((0xffffffffffffffffffffffffffffffffffffffff) and (address of caller))) in
(mem_write32 addr: (0x40) val: (0x60) in
(empty)
)
)
)
)

storage:
(storage_write at: (sha3 (concat ((0xffffffffffffffffffffffffffffffffffffffff) and ((0xffffffffffffffffffffffffffffffffffffffff) and (address of caller))) (0x1))), val: ((0x1dcd6500) * ((0xa) ** ((0xff) and (0x12))))
(storage_write at: (0x0), val: ((0x1dcd6500) * ((0xa) ** ((0xff) and (0x12))))
(storage_write at: (0x3), val: ((((0xffffffffffffffffffffffffffffffffffffffff) and (address of caller)) * (0x1)) or ((not ((0xffffffffffffffffffffffffffffffffffffffff) * (0x1))) and (((0x0) * (0x10000000000000000000000000000000000000000)) or ((not ((0xff) * (0x10000000000000000000000000000000000000000))) and (get_storage (0x3) (initial storage))))))
(storage_write at: (0x3), val: (((0x0) * (0x10000000000000000000000000000000000000000)) or ((not ((0xff) * (0x10000000000000000000000000000000000000000))) and (get_storage (0x3) (initial storage))))
(initial storage)
)
)
)
)

log: XXX
remaining_program: XXX
}.