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 in four parts:
  1. 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 provide some useful information on the computer.
  2. 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 !
  3. 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 1200 seconds. 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 1230 seconds which will send a SIGXPU to the solver. The last limit is on the virtual memory used by the process (900Mb).
    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.
  4. 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.

General information on the benchmark

Namemps-v2-20-10/ftp.netlib.org/lp/data/normalized-mps-v2-20-10-scfxm3.opb
MD5SUM4386d3a42d53adecf557a6eee4db5bf4
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableNO
(Un)Satisfiability was proved
Best value of the objective function
Optimality of the best value was proved
Number of terms in the objective function 2070
Biggest coefficient in the objective function 5368709120
Number of bits for the biggest coefficient in the objective function 33
Sum of the numbers in the objective function 421980536439
Number of bits of the sum of numbers in the objective function 39
Biggest number in a constraint 53687091200000
Number of bits of the biggest number in a constraint 46
Biggest sum of numbers in a constraint 326830904793855
Number of bits of the biggest sum of numbers49
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark19.0541
Number of variables41130
Total number of constraints990
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)0
Number of constraints which are nor clauses,nor cardinality constraints990
Minimum length of a constraint30
Maximum length of a constraint1710

Trace number 2621

Launcher Data

LAUNCH ON wulflinc21 THE 2005-09-18 20:31:14 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=2804 boxname=wulflinc21 idbench=460 idsolver=3 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  4386d3a42d53adecf557a6eee4db5bf4  /oldhome/oroussel/tmp/wulflinc21/normalized-mps-v2-20-10-scfxm3.opb
REAL COMMAND:  minisat+_script /oldhome/oroussel/tmp/wulflinc21/normalized-mps-v2-20-10-scfxm3.opb
IDLAUNCH: 2804
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.161
cache size	: 512 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 2
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips	: 890.88

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.161
cache size	: 512 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 2
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips	: 899.07

/proc/meminfo:
MemTotal:      1034660 kB
MemFree:        887680 kB
Buffers:         35236 kB
Cached:          84216 kB
SwapCached:        908 kB
Active:          84156 kB
Inactive:        37948 kB
HighTotal:      131008 kB
HighFree:        50596 kB
LowTotal:       903652 kB
LowFree:        837084 kB
SwapTotal:     2097892 kB
SwapFree:      2096472 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5804 kB
Slab:            19148 kB
Committed_AS:    64348 kB
PageTables:        340 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-18 20:31:43 (client local time) WITH STATUS 20 IN 28.9616 SECONDS
stats: 2804 7 28.9616 20

Solver Data

c Parsing PB file...
c PARSE ERROR! [line 1385] Integer overflow. Use BigNum-version.
c OK -- Running BigNum-version instead...
c Parsing PB file...
c Converting 1521 PB-constraints to clauses...
c   -- Unit propagations: ppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppp  -- Detecting intervals from adjacent constraints: ####################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################
c   -- Clauses(.)/Splits(s): s
s UNSATISFIABLE
c _______________________________________________________________________________
c 
c restarts              : 0
c conflicts             : 0              (0 /sec)
c decisions             : 0              (0 /sec)
c propagations          : 0              (0 /sec)
c inspects              : 0              (0 /sec)
c CPU time              : 28.4537 s
c _______________________________________________________________________________

Watcher Data

Enforcing CPU limit (will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime (will send SIGXCPU) limit: 1230 seconds
Enforcing Stack size limit: 67108864 bytes
Enforcing memory limit (will send SIGTERM then SIGKILL): 921600 Kb
Enforcing VSIZE limit: 994918400 bytes
Current StackSize limit: 67108864 bytes
Raw data (/proc/31856/stat): 31856 (minisat+_script) R 31855 31856 20602 0 -1 0 19 0 0 0 0 0 0 0 23 0 1 0 1721423124 712704 3 4294967295 134512640 135087896 3221224496 3221224496 1073744960 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/31856/statm): 174 3 169 147 0 27 0
[pid=31856] vsize: 696
open syscall for file /etc/ld.so.preload
open syscall for file tls/i686/mmx/libtermcap.so.2
open syscall for file tls/i686/libtermcap.so.2
open syscall for file tls/mmx/libtermcap.so.2
open syscall for file tls/libtermcap.so.2
open syscall for file i686/mmx/libtermcap.so.2
open syscall for file i686/libtermcap.so.2
open syscall for file mmx/libtermcap.so.2
open syscall for file libtermcap.so.2
open syscall for file /oldhome/oroussel/lib/tls/i686/mmx/libtermcap.so.2
open syscall for file /oldhome/oroussel/lib/tls/i686/libtermcap.so.2
open syscall for file /oldhome/oroussel/lib/tls/mmx/libtermcap.so.2
open syscall for file /oldhome/oroussel/lib/tls/libtermcap.so.2
open syscall for file /oldhome/oroussel/lib/i686/mmx/libtermcap.so.2
open syscall for file /oldhome/oroussel/lib/i686/libtermcap.so.2
open syscall for file /oldhome/oroussel/lib/mmx/libtermcap.so.2
open syscall for file /oldhome/oroussel/lib/libtermcap.so.2
open syscall for file /etc/ld.so.cache
open syscall for file /lib/libtermcap.so.2
open syscall for file tls/i686/mmx/libdl.so.2
open syscall for file tls/i686/libdl.so.2
open syscall for file tls/mmx/libdl.so.2
open syscall for file tls/libdl.so.2
open syscall for file i686/mmx/libdl.so.2
open syscall for file i686/libdl.so.2
open syscall for file mmx/libdl.so.2
open syscall for file libdl.so.2
open syscall for file /oldhome/oroussel/lib/libdl.so.2
open syscall for file /lib/libdl.so.2
open syscall for file tls/i686/mmx/libc.so.6
open syscall for file tls/i686/libc.so.6
open syscall for file tls/mmx/libc.so.6
open syscall for file tls/libc.so.6
open syscall for file i686/mmx/libc.so.6
open syscall for file i686/libc.so.6
open syscall for file mmx/libc.so.6
open syscall for file libc.so.6
open syscall for file /oldhome/oroussel/lib/libc.so.6
open syscall for file /lib/tls/libc.so.6
open syscall for file /dev/tty
open syscall for file /etc/mtab
open syscall for file /proc/meminfo
open syscall for file /oldhome/oroussel/solvers/minisat+_script
New process pid=31857
New process pid=31858
New process pid=31859
execve syscall for /bin/sed executable
open syscall for file /etc/ld.so.preload
open syscall for file tls/i686/mmx/libc.so.6
open syscall for file tls/i686/libc.so.6
open syscall for file tls/mmx/libc.so.6
open syscall for file tls/libc.so.6
open syscall for file i686/mmx/libc.so.6
One traced child (pid=31858) exited with status: 0
open syscall for file i686/libc.so.6
open syscall for file mmx/libc.so.6
open syscall for file libc.so.6
open syscall for file /oldhome/oroussel/lib/tls/i686/mmx/libc.so.6
open syscall for file /oldhome/oroussel/lib/tls/i686/libc.so.6
open syscall for file /oldhome/oroussel/lib/tls/mmx/libc.so.6
open syscall for file /oldhome/oroussel/lib/tls/libc.so.6
open syscall for file /oldhome/oroussel/lib/i686/mmx/libc.so.6
open syscall for file /oldhome/oroussel/lib/i686/libc.so.6
open syscall for file /oldhome/oroussel/lib/mmx/libc.so.6
open syscall for file /oldhome/oroussel/lib/libc.so.6
open syscall for file /etc/ld.so.cache
open syscall for file /lib/tls/libc.so.6
One traced child (pid=31859) exited with status: 0
One traced child (pid=31857) exited with status: 0
New process pid=31860
execve syscall for /oldhome/oroussel/solvers/minisat+_64-bit_static executable
open syscall for file /dev/null
open syscall for file /oldhome/oroussel/tmp/wulflinc21/normalized-mps-v2-20-10-scfxm3.opb
One traced child (pid=31860) exited with status: 5
open syscall for file /oldhome/oroussel/solvers/
New process pid=31861
execve syscall for /oldhome/oroussel/solvers/minisat+_bignum_static executable
open syscall for file /dev/null
open syscall for file /oldhome/oroussel/tmp/wulflinc21/normalized-mps-v2-20-10-scfxm3.opb

[startup+10.0027 s]
Raw data (loadavg): 0.93 0.96 0.91 2/58 31861
Raw data (/proc/31856/stat): 31856 (minisat+_script) S 31855 31856 20602 0 -1 0 314 514 0 0 0 0 4 2 19 0 1 0 1721423124 2179072 234 4294967295 134512640 135087896 3221224496 3221223384 1074634510 0 65536 5 65538 3222414538 0 0 17 0 0 0
Raw data (/proc/31856/statm): 532 234 485 147 0 385 0
[pid=31856] vsize: 2128
Raw data (/proc/31861/stat): 31861 (minisat+_bignum) R 31856 31856 20602 0 -1 0 3198 0 0 0 946 19 0 0 25 0 1 0 1721423137 14106624 3177 4294967295 134512640 135167914 3221224448 3221222736 134849435 0 0 5 16386 0 0 0 17 0 0 0
Raw data (/proc/31861/statm): 3444 3177 162 162 0 3282 0
[pid=31861] vsize: 13776
Current children cumulated CPU time (s) 9.71
Current children cumulated vsize (Kb) 15904

[startup+20.0034 s]
Raw data (loadavg): 0.94 0.96 0.91 2/58 31861
Raw data (/proc/31856/stat): 31856 (minisat+_script) S 31855 31856 20602 0 -1 0 314 514 0 0 0 0 4 2 19 0 1 0 1721423124 2179072 234 4294967295 134512640 135087896 3221224496 3221223384 1074634510 0 65536 5 65538 3222414538 0 0 17 0 0 0
Raw data (/proc/31856/statm): 532 234 485 147 0 385 0
[pid=31856] vsize: 2128
Raw data (/proc/31861/stat): 31861 (minisat+_bignum) R 31856 31856 20602 0 -1 0 6716 0 0 0 1901 41 0 0 25 0 1 0 1721423137 29081600 6609 4294967295 134512640 135167914 3221224448 3221223296 134594169 0 0 5 16386 0 0 0 17 1 0 0
Raw data (/proc/31861/statm): 7100 6609 162 162 0 6938 0
[pid=31861] vsize: 28400
Current children cumulated CPU time (s) 19.48
Current children cumulated vsize (Kb) 30528
One traced child (pid=31861) exited with status: 20
One traced child (pid=31856) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 29.4597
CPU time (s): 28.9616
CPU user time (s): 28.5037
CPU system time (s): 0.45793
CPU usage (%): 98.3092
Max. virtual memory (cumulated for all children) (Kb): 30528

Verifier Data

ERROR: no interpretation found !