Trace number 308855

Some explanations

A solver is run under the control of another program named runsolver. runsolver is in charge of imposing the CPU time limit and the memory limit to the solver. It also monitors some information about the process. The trace of the execution of a solver is divided into four (or five) parts:
  1. SOLVER DATA
    This is the output of the solver (stdout and stderr).
    Note that some very long lines in this section may be truncated by your web browser ! In such a case, you may want to use the "Download as text" link to get the trace as a text file.

    When the --timestamp option is passed to the runsolver program, each line output by the solver is prepended with a timestamp which indicates at what time the line was output by the solver. Times are relative to the start of the program, given in seconds, and are wall clock time (not CPU time).

    As some 'v lines' may be very long (sometimes several megabytes), the 'v line' output by your solver may be split on several lines to help limit the size of the trace recorded in the database. In any case, the exact output of your solver is preserved in a trace file.
  2. VERIFIER DATA
    The output of the solver is piped to a verifier program which will search a value line "v " and, if found, will check that the given interpretation satisfies all constraints.
  3. CONVERSION SCRIPT DATA (Optionnal)
    When a conversion script is used, this section shows the messages that were output by the conversion script.
  4. WATCHER DATA
    This is the informations gathered by the runsolver program. It first prints the different limits. There's a first limit on CPU time set to X seconds (see the parameters in the trace). After this time has ellapsed, runsolver sends a SIGTERM and 2 seconds later a SIGKILL to the solver. For safety, there's also another limit set to X+30 seconds which will send a SIGXPU to the solver. The last limit is on the virtual memory used by the process (see the parameters in the trace).
    Every ten seconds, the runsolver process fetches the content of /proc/loadavg, /proc/pid/stat and /proc/pid/statm (see man proc) and prints it as raw data. This is only recorded in case we need to investigate the behaviour of a solver. The memory used by the solver (vsize) is also given every ten seconds.
    When the solver exits, runsolver prints some informations such as status and time. CPU usage is the ratio CPU Time/Real Time.
  5. LAUNCHER DATA
    These informations are related to the script which will launch the solver. The most important informations are the command line given to the solver, the md5sum of the different files and the dump of the /proc/cpuinfo and /proc/meminfo which provides some useful information on the computer.

Solver answer on this benchmark

Solver NameAnswerCPU timeWall clock time
MXC 2007-02-08UNSAT 282.772 282.866

General information on the benchmark

Namerandom/2+p/p0.7/v4500/
unif2p-p0.7-v4500-c12015-S1293761391-11-UNSAT.cnf
MD5SUMbd48c0af40579fae130a490637a0c778
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark81.1437
Satisfiable
(Un)Satisfiability was proved
Number of variables4497
Number of clauses12014
Sum of the clauses size32438
Maximum clause length3
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 23604
Number of clauses of size 38410
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

282.69/282.86	c MXC attempting /tmp/evaluation/308855-1172529721/instance-308855-1172529721.cnf
282.69/282.86	c 0 assignments made, starting to guess now
282.69/282.86	c ===================================[MXC]=====================================
282.69/282.86	c | Conflicts |     ORIGINAL     |             LEARNT              | Progress |
282.69/282.86	c |           | Clauses Literals |  Limit Clauses Literals  Lit/Cl |          |
282.69/282.86	c =============================================================================
282.69/282.86	c |         0 |    8410    25230 |    2803       0       0     nan |  0.000 % |
282.69/282.86	c |       100 |    8410    25230 |    3083      97    1948    20.1 |  0.000 % |
282.69/282.86	c |       252 |    8410    25230 |    3391     243    4621    19.0 |  0.000 % |
282.69/282.86	c |       477 |    8410    25230 |    3730     467   10301    22.1 |  0.000 % |
282.69/282.86	c |       815 |    8410    25230 |    4103     803   17139    21.3 |  0.000 % |
282.69/282.86	c |      1321 |    8410    25230 |    4514    1306   29817    22.8 |  0.000 % |
282.69/282.86	c |      2081 |    8410    25230 |    4965    2065   51097    24.7 |  0.000 % |
282.69/282.86	c |      3221 |    8410    25230 |    5462    3205   76085    23.7 |  0.000 % |
282.69/282.86	c |      4931 |    8410    25230 |    6008    4913  129382    26.3 |  0.000 % |
282.69/282.86	c |      7494 |    8410    25230 |    6609    4470  134272    30.0 |  0.000 % |
282.69/282.86	c |     11339 |    8410    25230 |    7270    5003  123839    24.8 |  0.000 % |
282.69/282.86	c |     17105 |    8410    25230 |    7997    7129  194274    27.3 |  0.000 % |
282.69/282.86	c |     25754 |    8410    25230 |    8797    7778  223646    28.8 |  0.000 % |
282.69/282.86	c |     38728 |    8410    25230 |    9676    7548  189582    25.1 |  0.000 % |
282.69/282.86	c |     58189 |    8410    25230 |   10644    7651  211753    27.7 |  0.000 % |
282.69/282.86	c |     87381 |    8410    25230 |   11708   10242  330132    32.2 |  0.000 % |
282.69/282.86	c |    131171 |    8399    25197 |   12879    7201  179527    24.9 |  0.044 % |
282.69/282.86	c |    196856 |    8399    25197 |   14167    8496  230475    27.1 |  0.044 % |
282.69/282.86	c |    295382 |    8399    25197 |   15584    7881  217592    27.6 |  0.044 % |
282.69/282.86	c |    443171 |    8377    25131 |   17142   15408  381627    24.8 |  0.133 % |
282.69/282.86	c |    664854 |    8353    25059 |   18857   14258  376260    26.4 |  0.244 % |
282.69/282.86	c 282.800s elapsed
282.69/282.86	c restarts: 20
282.69/282.86	c decisions: 1150012
282.69/282.86	c propagations: 376525523
282.69/282.86	c conflicts: 913795
282.69/282.86	s UNSATISFIABLE

Verifier Data (download as text)

No possible verification on an UNSAT instance

Watcher Data (download as text)

runsolver version 3.2.0 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node63/watcher-308855-1172529721 -o ROOT/results/node63/solver-308855-1172529721 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/308855-1172529721/mxc /tmp/evaluation/308855-1172529721/instance-308855-1172529721.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1230 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 1843200 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 1894400 KiB
Solver output will be limited to a maximum of 15728640 bytes. The first 1048576 bytes and the last 14680064 bytes will be preserved
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 1.84 1.83 1.45 3/64 10242
/proc/meminfo: memFree=1900640/2055920 swapFree=4179036/4192956
[pid=10242] ppid=10240 vsize=1748 CPUtime=0
/proc/10242/stat : 10242 (mxc) R 10240 10242 10134 0 -1 4194304 261 0 0 0 0 0 0 0 18 0 1 0 272929457 1789952 245 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134688363 0 0 4096 0 0 0 0 17 1 0 0
/proc/10242/statm: 437 246 46 122 0 311 0

[startup+0.106666 s]
/proc/loadavg: 1.84 1.83 1.45 3/64 10242
/proc/meminfo: memFree=1900640/2055920 swapFree=4179036/4192956
[pid=10242] ppid=10240 vsize=1960 CPUtime=0.1
/proc/10242/stat : 10242 (mxc) R 10240 10242 10134 0 -1 4194304 378 0 0 0 10 0 0 0 18 0 1 0 272929457 2007040 314 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134688363 0 0 4096 0 0 0 0 17 1 0 0
/proc/10242/statm: 490 314 59 122 0 364 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 1960

[startup+0.514708 s]
/proc/loadavg: 1.84 1.83 1.45 3/64 10242
/proc/meminfo: memFree=1900640/2055920 swapFree=4179036/4192956
[pid=10242] ppid=10240 vsize=2356 CPUtime=0.51
/proc/10242/stat : 10242 (mxc) R 10240 10242 10134 0 -1 4194304 475 0 0 0 51 0 0 0 21 0 1 0 272929457 2412544 411 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134535083 0 0 4096 0 0 0 0 17 1 0 0
/proc/10242/statm: 589 411 59 122 0 463 0
Current children cumulated CPU time (s) 0.51
Current children cumulated vsize (KiB) 2356

[startup+1.33479 s]
/proc/loadavg: 1.84 1.83 1.45 2/65 10243
/proc/meminfo: memFree=1898776/2055920 swapFree=4179036/4192956
[pid=10242] ppid=10240 vsize=2760 CPUtime=1.33
/proc/10242/stat : 10242 (mxc) R 10240 10242 10134 0 -1 4194304 604 0 0 0 133 0 0 0 25 0 1 0 272929457 2826240 538 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134535083 0 0 4096 0 0 0 0 17 1 0 0
/proc/10242/statm: 690 538 67 122 0 564 0
Current children cumulated CPU time (s) 1.33
Current children cumulated vsize (KiB) 2760

[startup+2.97097 s]
/proc/loadavg: 1.84 1.83 1.45 2/65 10243
/proc/meminfo: memFree=1898456/2055920 swapFree=4179036/4192956
[pid=10242] ppid=10240 vsize=3024 CPUtime=2.96
/proc/10242/stat : 10242 (mxc) R 10240 10242 10134 0 -1 4194304 664 0 0 0 296 0 0 0 25 0 1 0 272929457 3096576 598 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134531117 0 0 4096 0 0 0 0 17 1 0 0
/proc/10242/statm: 756 598 67 122 0 630 0
Current children cumulated CPU time (s) 2.96
Current children cumulated vsize (KiB) 3024

[startup+6.25232 s]
/proc/loadavg: 1.77 1.81 1.45 2/65 10243
/proc/meminfo: memFree=1897880/2055920 swapFree=4179036/4192956
[pid=10242] ppid=10240 vsize=3552 CPUtime=6.24
/proc/10242/stat : 10242 (mxc) R 10240 10242 10134 0 -1 4194304 779 0 0 0 624 0 0 0 25 0 1 0 272929457 3637248 713 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134517394 0 0 4096 0 0 0 0 17 1 0 0
/proc/10242/statm: 888 714 67 122 0 762 0
Current children cumulated CPU time (s) 6.24
Current children cumulated vsize (KiB) 3552

[startup+12.708 s]
/proc/loadavg: 1.71 1.80 1.44 2/65 10243
/proc/meminfo: memFree=1897560/2055920 swapFree=4179036/4192956
[pid=10242] ppid=10240 vsize=3776 CPUtime=12.69
/proc/10242/stat : 10242 (mxc) R 10240 10242 10134 0 -1 4194304 859 0 0 0 1269 0 0 0 25 0 1 0 272929457 3866624 793 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519951 0 0 4096 0 0 0 0 17 1 0 0
/proc/10242/statm: 944 793 67 122 0 818 0
Current children cumulated CPU time (s) 12.69
Current children cumulated vsize (KiB) 3776

[startup+25.6094 s]
/proc/loadavg: 1.62 1.77 1.44 2/65 10243
/proc/meminfo: memFree=1896792/2055920 swapFree=4179036/4192956
[pid=10242] ppid=10240 vsize=4572 CPUtime=25.59
/proc/10242/stat : 10242 (mxc) R 10240 10242 10134 0 -1 4194304 1040 0 0 0 2559 0 0 0 25 0 1 0 272929457 4681728 974 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519200 0 0 4096 0 0 0 0 17 1 0 0
/proc/10242/statm: 1143 974 67 122 0 1017 0
Current children cumulated CPU time (s) 25.59
Current children cumulated vsize (KiB) 4572

[startup+51.2141 s]
/proc/loadavg: 1.41 1.71 1.43 2/65 10243
/proc/meminfo: memFree=1896344/2055920 swapFree=4179036/4192956
[pid=10242] ppid=10240 vsize=4956 CPUtime=51.19
/proc/10242/stat : 10242 (mxc) R 10240 10242 10134 0 -1 4194304 1158 0 0 0 5119 0 0 0 25 0 1 0 272929457 5074944 1092 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519964 0 0 4096 0 0 0 0 17 1 0 0
/proc/10242/statm: 1239 1092 67 122 0 1113 0
Current children cumulated CPU time (s) 51.19
Current children cumulated vsize (KiB) 4956

[startup+102.423 s]
/proc/loadavg: 1.17 1.60 1.40 2/65 10243
/proc/meminfo: memFree=1895512/2055920 swapFree=4179036/4192956
[pid=10242] ppid=10240 vsize=5796 CPUtime=102.38
/proc/10242/stat : 10242 (mxc) R 10240 10242 10134 0 -1 4194304 1355 0 0 0 10238 0 0 0 25 0 1 0 272929457 5935104 1289 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134529821 0 0 4096 0 0 0 0 17 1 0 0
/proc/10242/statm: 1449 1289 67 122 0 1323 0
Current children cumulated CPU time (s) 102.38
Current children cumulated vsize (KiB) 5796

[startup+162.44 s]
/proc/loadavg: 1.06 1.49 1.37 2/65 10243
/proc/meminfo: memFree=1894680/2055920 swapFree=4179036/4192956
[pid=10242] ppid=10240 vsize=6588 CPUtime=162.38
/proc/10242/stat : 10242 (mxc) R 10240 10242 10134 0 -1 4194304 1547 0 0 0 16237 1 0 0 25 0 1 0 272929457 6746112 1481 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519890 0 0 4096 0 0 0 0 17 1 0 0
/proc/10242/statm: 1647 1481 67 122 0 1521 0
Current children cumulated CPU time (s) 162.38
Current children cumulated vsize (KiB) 6588

[startup+222.459 s]
/proc/loadavg: 1.02 1.40 1.35 2/65 10243
/proc/meminfo: memFree=1894424/2055920 swapFree=4179036/4192956
[pid=10242] ppid=10240 vsize=6812 CPUtime=222.39
/proc/10242/stat : 10242 (mxc) R 10240 10242 10134 0 -1 4194304 1605 0 0 0 22238 1 0 0 25 0 1 0 272929457 6975488 1539 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519249 0 0 4096 0 0 0 0 17 1 0 0
/proc/10242/statm: 1703 1539 67 122 0 1577 0
Current children cumulated CPU time (s) 222.39
Current children cumulated vsize (KiB) 6812

[startup+282.475 s]
/proc/loadavg: 1.01 1.32 1.33 2/65 10243
/proc/meminfo: memFree=1894040/2055920 swapFree=4179036/4192956
[pid=10242] ppid=10240 vsize=7180 CPUtime=282.38
/proc/10242/stat : 10242 (mxc) R 10240 10242 10134 0 -1 4194304 1702 0 0 0 28237 1 0 0 25 0 1 0 272929457 7352320 1636 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519249 0 0 4096 0 0 0 0 17 1 0 0
/proc/10242/statm: 1795 1636 67 122 0 1669 0
Current children cumulated CPU time (s) 282.38
Current children cumulated vsize (KiB) 7180

Solver just ended. Dumping a history of the last processes samples

[startup+282.679 s]
/proc/loadavg: 1.01 1.32 1.33 2/65 10243
/proc/meminfo: memFree=1894040/2055920 swapFree=4179036/4192956
[pid=10242] ppid=10240 vsize=7180 CPUtime=282.59
/proc/10242/stat : 10242 (mxc) R 10240 10242 10134 0 -1 4194304 1702 0 0 0 28258 1 0 0 25 0 1 0 272929457 7352320 1636 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134519987 0 0 4096 0 0 0 0 17 1 0 0
/proc/10242/statm: 1795 1636 67 122 0 1669 0
Current children cumulated CPU time (s) 282.59
Current children cumulated vsize (KiB) 7180

[startup+282.781 s]
/proc/loadavg: 1.01 1.32 1.33 2/65 10243
/proc/meminfo: memFree=1894040/2055920 swapFree=4179036/4192956
[pid=10242] ppid=10240 vsize=7180 CPUtime=282.69
/proc/10242/stat : 10242 (mxc) R 10240 10242 10134 0 -1 4194304 1702 0 0 0 28268 1 0 0 25 0 1 0 272929457 7352320 1636 18446744073709551615 134512640 135013041 4294956720 18446744073709551615 134530055 0 0 4096 0 0 0 0 17 1 0 0
/proc/10242/statm: 1795 1636 67 122 0 1669 0
Current children cumulated CPU time (s) 282.69
Current children cumulated vsize (KiB) 7180

Child status: 20
Real time (s): 282.866
CPU time (s): 282.772
CPU user time (s): 282.755
CPU system time (s): 0.016997
CPU usage (%): 99.9666
Max. virtual memory (cumulated for all children) (KiB): 7180

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 282.755
system time used= 0.016997
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 1704
page faults= 0
swaps= 0
block input operations= 0
block output operations= 0
messages sent= 0
messages received= 0
signals received= 0
voluntary context switches= 9
involuntary context switches= 386

runsolver used 0.163975 second user time and 0.596909 second system time

The end

Launcher Data (download as text)

Begin job on node63 on Mon Feb 26 22:42:01 UTC 2007

IDJOB= 308855
IDBENCH= 20243
IDSOLVER= 107
FILE ID= node63/308855-1172529721

PBS_JOBID= 3971809

Free space on /tmp= 66560 MiB

SOLVER NAME= MXC 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/2+p/p0.7/v4500/unif2p-p0.7-v4500-c12015-S1293761391-11-UNSAT.cnf
COMMAND LINE= /tmp/evaluation/308855-1172529721/mxc /tmp/evaluation/308855-1172529721/instance-308855-1172529721.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node63/watcher-308855-1172529721 -o ROOT/results/node63/solver-308855-1172529721 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/308855-1172529721/mxc /tmp/evaluation/308855-1172529721/instance-308855-1172529721.cnf            

META MD5SUM SOLVER= fd459248d3e92e664505cc2f0f683bf4
MD5SUM BENCH=  bd48c0af40579fae130a490637a0c778

RANDOM SEED= 948453025

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node63.alineos.net 2.6.9-22.EL.rootsmp #1 SMP Mon Oct 3 08:59:52 CEST 2005 x86_64 x86_64 x86_64 GNU/Linux

/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 15
model		: 4
model name	:                   Intel(R) Xeon(TM) CPU 3.00GHz
stepping	: 3
cpu MHz		: 3000.214
cache size	: 2048 KB
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm pni monitor ds_cpl cid cx16 xtpr
bogomips	: 5914.62
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 15
model		: 4
model name	:                   Intel(R) Xeon(TM) CPU 3.00GHz
stepping	: 3
cpu MHz		: 3000.214
cache size	: 2048 KB
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm pni monitor ds_cpl cid cx16 xtpr
bogomips	: 5586.94
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055920 kB
MemFree:       1901112 kB
Buffers:         22860 kB
Cached:          91088 kB
SwapCached:       7976 kB
Active:          41380 kB
Inactive:        86280 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1901112 kB
SwapTotal:     4192956 kB
SwapFree:      4179036 kB
Dirty:             780 kB
Writeback:           0 kB
Mapped:          15140 kB
Slab:            13184 kB
Committed_AS:   635804 kB
PageTables:       1460 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264952 kB
VmallocChunk: 536605679 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 66560 MiB

End job on node63 on Mon Feb 26 22:46:44 UTC 2007