Trace number 316103

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 2.02469 2.03728

General information on the benchmark

Namecrafted/spence/
medium/s61-100.cnf
MD5SUM8e686ecbc85309de84d77c0df9eeaa58
Bench CategoryCRAFTED (crafted instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark1.65375
Satisfiable
(Un)Satisfiability was proved
Number of variables61
Number of clauses132
Sum of the clauses size396
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 3132
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

1.99/2.03	c MXC attempting /tmp/evaluation/316103-1172664222/instance-316103-1172664222.cnf
1.99/2.03	c 0 assignments made, starting to guess now
1.99/2.03	c ===================================[MXC]=====================================
1.99/2.03	c | Conflicts |     ORIGINAL     |             LEARNT              | Progress |
1.99/2.03	c |           | Clauses Literals |  Limit Clauses Literals  Lit/Cl |          |
1.99/2.03	c =============================================================================
1.99/2.03	c |         0 |     132      396 |    1000       0       0     nan |  0.000 % |
1.99/2.03	c |       100 |     132      396 |    1100     100    1151    11.5 |  0.000 % |
1.99/2.03	c |       250 |     132      396 |    1210     250    2920    11.7 |  0.000 % |
1.99/2.03	c |       475 |     132      396 |    1331     475    5816    12.2 |  0.000 % |
1.99/2.03	c |       812 |     132      396 |    1464     812   10209    12.6 |  0.000 % |
1.99/2.03	c |      1320 |     132      396 |    1610    1320   16183    12.3 |  0.000 % |
1.99/2.03	c |      2080 |     132      396 |    1771    1274   13805    10.8 |  0.000 % |
1.99/2.03	c |      3221 |     132      396 |    1948    1529   15218    10.0 |  0.000 % |
1.99/2.03	c |      4931 |     132      396 |    2143    1289   13527    10.5 |  0.000 % |
1.99/2.03	c |      7493 |     132      396 |    2357    1707   16363     9.6 |  0.000 % |
1.99/2.03	c |     11338 |     132      396 |    2593    2016   18227     9.0 |  0.000 % |
1.99/2.03	c |     17105 |     132      396 |    2853    1301   12244     9.4 |  0.000 % |
1.99/2.03	c |     25754 |     132      396 |    3138    2815   24443     8.7 |  0.000 % |
1.99/2.03	c |     38728 |     132      396 |    3452    1667   15554     9.3 |  0.000 % |
1.99/2.03	c |     58189 |     132      396 |    3797    2142   17982     8.4 |  0.000 % |
1.99/2.03	c 2.020s elapsed
1.99/2.03	c restarts: 14
1.99/2.03	c decisions: 104012
1.99/2.03	c propagations: 1483147
1.99/2.03	c conflicts: 81653
1.99/2.03	s UNSATISFIABLE

Verifier Data (download as text)

No possible verification on an UNSAT instance

Watcher Data (download as text)

runsolver version 3.2.1 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node61/watcher-316103-1172664222 -o ROOT/results/node61/solver-316103-1172664222 -C 1200 -W 2400 -M 1800 --output-limit 1,15 /tmp/evaluation/316103-1172664222/mxc /tmp/evaluation/316103-1172664222/instance-316103-1172664222.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1230 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 2400 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: 0.90 0.95 0.97 3/64 27221
/proc/meminfo: memFree=1718992/2055920 swapFree=4183264/4192956
[pid=27221] ppid=27219 vsize=932 CPUtime=0
/proc/27221/stat : 27221 (mxc) R 27219 27221 26821 0 -1 4194304 96 0 0 0 0 0 0 0 18 0 1 0 286379105 954368 80 18446744073709551615 134512640 135013041 4294956640 18446744073709551615 134688363 0 0 4096 0 0 0 0 17 1 0 0
/proc/27221/statm: 233 80 59 122 0 107 0

[startup+0.0755949 s]
/proc/loadavg: 0.90 0.95 0.97 3/64 27221
/proc/meminfo: memFree=1718992/2055920 swapFree=4183264/4192956
[pid=27221] ppid=27219 vsize=1072 CPUtime=0.07
/proc/27221/stat : 27221 (mxc) R 27219 27221 26821 0 -1 4194304 146 0 0 0 7 0 0 0 18 0 1 0 286379105 1097728 128 18446744073709551615 134512640 135013041 4294956640 18446744073709551615 134519610 0 0 4096 0 0 0 0 17 1 0 0
/proc/27221/statm: 268 128 67 122 0 142 0
Current children cumulated CPU time (s) 0.07
Current children cumulated vsize (KiB) 1072

[startup+0.101595 s]
/proc/loadavg: 0.90 0.95 0.97 3/64 27221
/proc/meminfo: memFree=1718992/2055920 swapFree=4183264/4192956
[pid=27221] ppid=27219 vsize=1072 CPUtime=0.09
/proc/27221/stat : 27221 (mxc) R 27219 27221 26821 0 -1 4194304 149 0 0 0 9 0 0 0 18 0 1 0 286379105 1097728 131 18446744073709551615 134512640 135013041 4294956640 18446744073709551615 134519261 0 0 4096 0 0 0 0 17 1 0 0
/proc/27221/statm: 268 131 67 122 0 142 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 1072

[startup+0.301614 s]
/proc/loadavg: 0.90 0.95 0.97 3/64 27221
/proc/meminfo: memFree=1718992/2055920 swapFree=4183264/4192956
[pid=27221] ppid=27219 vsize=1200 CPUtime=0.29
/proc/27221/stat : 27221 (mxc) R 27219 27221 26821 0 -1 4194304 171 0 0 0 29 0 0 0 19 0 1 0 286379105 1228800 153 18446744073709551615 134512640 135013041 4294956640 18446744073709551615 134530317 0 0 4096 0 0 0 0 17 1 0 0
/proc/27221/statm: 300 153 67 122 0 174 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 1200

[startup+0.701653 s]
/proc/loadavg: 0.90 0.95 0.97 3/64 27221
/proc/meminfo: memFree=1718992/2055920 swapFree=4183264/4192956
[pid=27221] ppid=27219 vsize=1324 CPUtime=0.69
/proc/27221/stat : 27221 (mxc) R 27219 27221 26821 0 -1 4194304 196 0 0 0 69 0 0 0 23 0 1 0 286379105 1355776 178 18446744073709551615 134512640 135013041 4294956640 18446744073709551615 134519215 0 0 4096 0 0 0 0 17 1 0 0
/proc/27221/statm: 331 178 67 122 0 205 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 1324

[startup+1.50173 s]
/proc/loadavg: 0.90 0.95 0.97 2/65 27222
/proc/meminfo: memFree=1718536/2055920 swapFree=4183264/4192956
[pid=27221] ppid=27219 vsize=1324 CPUtime=1.49
/proc/27221/stat : 27221 (mxc) R 27219 27221 26821 0 -1 4194304 212 0 0 0 149 0 0 0 25 0 1 0 286379105 1355776 194 18446744073709551615 134512640 135013041 4294956640 18446744073709551615 134534751 0 0 4096 0 0 0 0 17 1 0 0
/proc/27221/statm: 331 194 67 122 0 205 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 1324

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

[startup+1.90177 s]
/proc/loadavg: 0.90 0.95 0.97 2/65 27222
/proc/meminfo: memFree=1718536/2055920 swapFree=4183264/4192956
[pid=27221] ppid=27219 vsize=1324 CPUtime=1.89
/proc/27221/stat : 27221 (mxc) R 27219 27221 26821 0 -1 4194304 219 0 0 0 189 0 0 0 25 0 1 0 286379105 1355776 201 18446744073709551615 134512640 135013041 4294956640 18446744073709551615 134530184 0 0 4096 0 0 0 0 17 1 0 0
/proc/27221/statm: 331 201 67 122 0 205 0
Current children cumulated CPU time (s) 1.89
Current children cumulated vsize (KiB) 1324

[startup+2.00178 s]
/proc/loadavg: 0.90 0.95 0.97 2/65 27222
/proc/meminfo: memFree=1718536/2055920 swapFree=4183264/4192956
[pid=27221] ppid=27219 vsize=1324 CPUtime=1.99
/proc/27221/stat : 27221 (mxc) R 27219 27221 26821 0 -1 4194304 223 0 0 0 199 0 0 0 25 0 1 0 286379105 1355776 205 18446744073709551615 134512640 135013041 4294956640 18446744073709551615 134617009 0 0 4096 0 0 0 0 17 1 0 0
/proc/27221/statm: 331 205 67 122 0 205 0
Current children cumulated CPU time (s) 1.99
Current children cumulated vsize (KiB) 1324

Child status: 20
Real time (s): 2.03728
CPU time (s): 2.02469
CPU user time (s): 2.02269
CPU system time (s): 0.001999
CPU usage (%): 99.382
Max. virtual memory (cumulated for all children) (KiB): 1324

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 2.02269
system time used= 0.001999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 224
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= 2

runsolver used 0.004999 second user time and 0.009998 second system time

The end

Launcher Data (download as text)

Begin job on node61 on Wed Feb 28 12:03:42 UTC 2007

IDJOB= 316103
IDBENCH= 20433
IDSOLVER= 107
FILE ID= node61/316103-1172664222

PBS_JOBID= 3981219

Free space on /tmp= 66523 MiB

SOLVER NAME= MXC 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/crafted/spence/medium/s61-100.cnf
COMMAND LINE= /tmp/evaluation/316103-1172664222/mxc /tmp/evaluation/316103-1172664222/instance-316103-1172664222.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node61/watcher-316103-1172664222 -o ROOT/results/node61/solver-316103-1172664222 -C 1200 -W 2400 -M 1800 --output-limit 1,15  /tmp/evaluation/316103-1172664222/mxc /tmp/evaluation/316103-1172664222/instance-316103-1172664222.cnf            

META MD5SUM SOLVER= fd459248d3e92e664505cc2f0f683bf4
MD5SUM BENCH=  8e686ecbc85309de84d77c0df9eeaa58

RANDOM SEED= 365114531

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node61.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		: 3000.216
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		: 3000.216
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:       1719400 kB
Buffers:          9696 kB
Cached:         277400 kB
SwapCached:       3468 kB
Active:          32192 kB
Inactive:       264308 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1719400 kB
SwapTotal:     4192956 kB
SwapFree:      4183264 kB
Dirty:             696 kB
Writeback:           0 kB
Mapped:          15320 kB
Slab:            26120 kB
Committed_AS:   812352 kB
PageTables:       1388 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= 66523 MiB

End job on node61 on Wed Feb 28 12:03:44 UTC 2007