Trace number 1521891

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. The first timestamp (if present) is estimated CPU time. The last timestamp is wall clock 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
iPAWS 2009-03-22SAT 0.401938 0.401192

General information on the benchmark

NameRANDOM/LARGE/3SAT/UNKNOWN/2000/
unif-k3-r4.2-v2000-c8400-S136987316-008.cnf
MD5SUMf6ddf1b0f08bcc31521c4b74db5ce22f
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.330948
Satisfiable
(Un)Satisfiability was proved
Number of variables2000
Number of clauses8400
Sum of the clauses size25200
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 38400
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.29/0.40	s SATISFIABLE
0.29/0.40	v -1 -2 3 -4 5 6 -7 8 9 10 -11 -12 13 14 -15 16 -17 -18 19 -20 21 -22 23 -24 25 26 27 28 29 -30 -31 32 33 -34 -35 -36 37 38 39 40 41 42 43 44 45 -46 -47 -48 49 -50 51 -52 53 -54 55 -56 -57 -58 59 -60 -61 62 63 64 -65 -66 67 -68 -69 70 71 -72 73 74 75 -76 -77 -78 -79 -80 81 -82 -83 -84 -85 -86 87 88 89 90 91 -92 93 94 -95 -96 97 98 -99 -100 101 102 -103 -104 105 106 107 -108 -109 -110 -111 112 113 -114 -115 -116 -117 -118 -119 -120 -121 -122 -123 -124 -125 126 127 -128 129 130 -131 -132 133 134 135 -136 -137 138 -139 140 -141 142 143 144 145 -146 -147 148 -149 -150 -151 152 -153 154 -155 -156 157 -158 159 160 161 162 163 164 -165 166 -167 168 -169 170 171 -172 -173 -174 175 176 177 -178 179 -180 -181 -182 -183 -184 -185 186 -187 -188 -189 190 -191 192 -193 -194 -195 -196 -197 -198 199 200 -201 -202 -203 204 -205 -206 207 208 209 -210 211 -212 -213 -214 -215 -216 -217 218 -219 -220 -221 -222 223 -224 225 -226 -227 -228 -229 -230 231 232 -233 -234 235 -236 237 -238 239 -240 -241 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1833 1834 1835 -1836 1837 1838 1839 1840 -1841 1842 -1843 -1844 1845 -1846 -1847 -1848 -1849 1850 -1851 1852 -1853 1854 -1855 -1856 1857 1858 -1859 1860 1861 1862 -1863 -1864 1865 -1866 1867 1868 -1869 1870 -1871 -1872 1873 -1874 -1875 1876 1877 -1878 -1879 -1880 -1881 -1882 -1883 -1884 1885 1886 -1887 -1888 1889 -1890 -1891 1892 -1893 1894 -1895 1896 -1897 -1898 -1899 1900 -1901 1902 -1903 -1904 -1905 1906 -1907 -1908 1909 1910 -1911 -1912 -1913 1914 -1915 -1916 1917 -1918 -1919 1920 -1921 1922 -1923 -1924 -1925 -1926 1927 -1928 -1929 -1930 1931 -1932 -1933 1934 1935 -1936 1937 -1938 1939 1940 1941 1942 -1943 1944 1945 -1946 -1947 -1948 -1949 -1950 1951 -1952 -1953 1954 1955 1956 1957 -1958 1959 1960 1961 1962 1963 1964 1965 -1966 -1967 1968 1969 1970 1971 -1972 1973 -1974 -1975 -1976 1977 -1978 1979 -1980 -1981 -1982 1983 -1984 -1985 -1986 -1987 -1988 -1989 -1990 -1991 1992 -1993 1994 1995 1996 -1997 1998 -1999 -2000 0
0.29/0.40	c input file instance-1521891-1238387673.cnf, flips 210363

Verifier Data 

OK

Watcher Data 

runsolver version 3.2.9 (svn:489) (c) roussel@cril.univ-artois.fr

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-1521891-1238387673/watcher-1521891-1238387673 -o /tmp/evaluation-result-1521891-1238387673/solver-1521891-1238387673 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/iPAWS HOME/instance-1521891-1238387673.cnf 1895157781 

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): 1800 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: 2.00 1.86 1.49 2/65 12394
/proc/meminfo: memFree=1678944/2055920 swapFree=4177700/4192956
[pid=12394] ppid=12392 vsize=335916 CPUtime=0
/proc/12394/stat : 12394 (iPAWS) R 12392 12394 12201 0 -1 4194304 485 0 0 0 0 0 0 0 18 0 1 0 1111429529 343977984 469 1992294400 134512640 135114423 4294956208 18446744073709551615 134533181 0 0 4096 0 0 0 0 17 1 0 0
/proc/12394/statm: 83979 469 54 146 0 83831 0

[startup+0.0993251 s]
/proc/loadavg: 2.00 1.86 1.49 2/65 12394
/proc/meminfo: memFree=1678944/2055920 swapFree=4177700/4192956
[pid=12394] ppid=12392 vsize=335916 CPUtime=0.09
/proc/12394/stat : 12394 (iPAWS) R 12392 12394 12201 0 -1 4194304 1062 0 0 0 9 0 0 0 18 0 1 0 1111429529 343977984 1046 1992294400 134512640 135114423 4294956208 18446744073709551615 134515629 0 0 4096 0 0 0 0 17 1 0 0
/proc/12394/statm: 83979 1046 57 146 0 83831 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 335916

[startup+0.101326 s]
/proc/loadavg: 2.00 1.86 1.49 2/65 12394
/proc/meminfo: memFree=1678944/2055920 swapFree=4177700/4192956
[pid=12394] ppid=12392 vsize=335916 CPUtime=0.09
/proc/12394/stat : 12394 (iPAWS) R 12392 12394 12201 0 -1 4194304 1062 0 0 0 9 0 0 0 18 0 1 0 1111429529 343977984 1046 1992294400 134512640 135114423 4294956208 18446744073709551615 134514908 0 0 4096 0 0 0 0 17 1 0 0
/proc/12394/statm: 83979 1046 57 146 0 83831 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 335916

[startup+0.301359 s]
/proc/loadavg: 2.00 1.86 1.49 2/65 12394
/proc/meminfo: memFree=1678944/2055920 swapFree=4177700/4192956
[pid=12394] ppid=12392 vsize=335916 CPUtime=0.29
/proc/12394/stat : 12394 (iPAWS) R 12392 12394 12201 0 -1 4194304 1062 0 0 0 29 0 0 0 19 0 1 0 1111429529 343977984 1046 1992294400 134512640 135114423 4294956208 18446744073709551615 134554721 0 0 4096 0 0 0 0 17 1 0 0
/proc/12394/statm: 83979 1046 57 146 0 83831 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 335916

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

Child status: 0
Real time (s): 0.401192
CPU time (s): 0.401938
CPU user time (s): 0.396939
CPU system time (s): 0.004999
CPU usage (%): 100.186
Max. virtual memory (cumulated for all children) (KiB): 335916

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.396939
system time used= 0.004999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 1070
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= 2
involuntary context switches= 1

runsolver used 0.002999 second user time and 0.004999 second system time

The end

Launcher Data 

Begin job on node56 at 2009-03-30 06:34:33
IDJOB=1521891
IDBENCH=70286
IDSOLVER=516
FILE ID=node56/1521891-1238387673
PBS_JOBID= 9061347
Free space on /tmp= 103044 MiB

SOLVER NAME= iPAWS 2009-03-22
BENCH NAME= SAT09/RANDOM/LARGE/3SAT/UNKNOWN/2000/unif-k3-r4.2-v2000-c8400-S136987316-008.cnf
COMMAND LINE= HOME/iPAWS BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1521891-1238387673/watcher-1521891-1238387673 -o /tmp/evaluation-result-1521891-1238387673/solver-1521891-1238387673 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/iPAWS HOME/instance-1521891-1238387673.cnf 1895157781

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB
MAX NB THREAD= 0

MD5SUM BENCH= f6ddf1b0f08bcc31521c4b74db5ce22f
RANDOM SEED=1895157781

node56.alineos.net Linux 2.6.9-22.EL.rootsmp #1 SMP Mon Oct 3 08:59:52 CEST 2005

/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		: 3000.256
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		: 3000.256
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:       1679360 kB
Buffers:         67776 kB
Cached:         214096 kB
SwapCached:       9032 kB
Active:          64036 kB
Inactive:       228296 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1679360 kB
SwapTotal:     4192956 kB
SwapFree:      4177700 kB
Dirty:             812 kB
Writeback:           0 kB
Mapped:          16108 kB
Slab:            70100 kB
Committed_AS:  2520320 kB
PageTables:       1472 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= 103044 MiB
End job on node56 at 2009-03-30 06:34:33