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-v2-20-10-25fv47.opb
MD5SUM5984c30bfc33b34af2fab73888f86cf2
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 19170
Biggest coefficient in the objective function 536870912000000
Number of bits for the biggest coefficient in the objective function 49
Sum of the numbers in the objective function 10623608039212938
Number of bits of the sum of numbers in the objective function 54
Biggest number in a constraint 128285302811787264
Number of bits of the biggest number in a constraint 57
Biggest sum of numbers in a constraint 812950436219668362
Number of bits of the biggest sum of numbers60
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark34.4848
Number of variables47130
Total number of constraints820
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 constraints820
Minimum length of a constraint30
Maximum length of a constraint10200

Trace number 2646

Launcher Data

LAUNCH ON wulflinc3 THE 2005-09-18 20:38:45 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=2830 boxname=wulflinc3 idbench=486 idsolver=3 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  5984c30bfc33b34af2fab73888f86cf2  /oldhome/oroussel/tmp/wulflinc3/normalized-mps-v2-20-10-25fv47.opb
REAL COMMAND:  minisat+_script /oldhome/oroussel/tmp/wulflinc3/normalized-mps-v2-20-10-25fv47.opb
IDLAUNCH: 2830
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.190
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	: 2
cpu MHz		: 451.190
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:        918728 kB
Buffers:         34488 kB
Cached:          54824 kB
SwapCached:        856 kB
Active:          70436 kB
Inactive:        21560 kB
HighTotal:      131008 kB
HighFree:        74676 kB
LowTotal:       903652 kB
LowFree:        844052 kB
SwapTotal:     2097136 kB
SwapFree:      2095712 kB
Dirty:              36 kB
Writeback:           0 kB
Mapped:           5720 kB
Slab:            18300 kB
Committed_AS:    72360 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1388 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-18 20:39:45 (client local time) WITH STATUS 20 IN 58.7811 SECONDS
stats: 2830 7 58.7811 20

Solver Data

c Parsing PB file...
c PARSE ERROR! [line 1575] Integer overflow. Use BigNum-version.
c OK -- Running BigNum-version instead...
c Parsing PB file...
c Converting 1327 PB-constraints to clauses...
c   -- Unit propagations: ppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppp  -- 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              : 58.1252 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/20840/stat): 20840 (minisat+_script) R 20839 20840 31915 0 -1 0 19 0 0 0 0 0 0 0 23 0 1 0 1785958987 712704 3 4294967295 134512640 135087896 3221224512 3221224512 1073744960 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/20840/statm): 174 3 169 147 0 27 0
[pid=20840] 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=20841
New process pid=20842
New process pid=20843
execve syscall for /bin/sed executable
One traced child (pid=20842) exited with status: 0
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
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=20843) exited with status: 0
One traced child (pid=20841) exited with status: 0
New process pid=20844
execve syscall for /oldhome/oroussel/solvers/minisat+_64-bit_static executable
open syscall for file /dev/null
open syscall for file /oldhome/oroussel/tmp/wulflinc3/normalized-mps-v2-20-10-25fv47.opb
One traced child (pid=20844) exited with status: 5
open syscall for file /oldhome/oroussel/solvers/
New process pid=20845
execve syscall for /oldhome/oroussel/solvers/minisat+_bignum_static executable
open syscall for file /dev/null
open syscall for file /oldhome/oroussel/tmp/wulflinc3/normalized-mps-v2-20-10-25fv47.opb

[startup+10.0038 s]
Raw data (loadavg): 0.93 0.95 0.93 2/57 20845
Raw data (/proc/20840/stat): 20840 (minisat+_script) S 20839 20840 31915 0 -1 0 314 389 0 0 0 1 2 1 20 0 1 0 1785958987 2179072 234 4294967295 134512640 135087896 3221224512 3221223400 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (/proc/20840/statm): 532 234 485 147 0 385 0
[pid=20840] vsize: 2128
Raw data (/proc/20845/stat): 20845 (minisat+_bignum) R 20840 20840 31915 0 -1 0 3691 0 0 0 949 22 0 0 25 0 1 0 1785958995 16949248 3635 4294967295 134512640 135167914 3221224448 3221223368 134573057 0 0 5 16386 0 0 0 17 1 0 0
Raw data (/proc/20845/statm): 4138 3635 162 162 0 3976 0
[pid=20845] vsize: 16552
Current children cumulated CPU time (s) 9.75
Current children cumulated vsize (Kb) 18680

[startup+20.0057 s]
Raw data (loadavg): 0.94 0.96 0.93 2/57 20845
Raw data (/proc/20840/stat): 20840 (minisat+_script) S 20839 20840 31915 0 -1 0 314 389 0 0 0 1 2 1 20 0 1 0 1785958987 2179072 234 4294967295 134512640 135087896 3221224512 3221223400 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (/proc/20840/statm): 532 234 485 147 0 385 0
[pid=20840] vsize: 2128
Raw data (/proc/20845/stat): 20845 (minisat+_bignum) R 20840 20840 31915 0 -1 0 6878 0 0 0 1906 41 0 0 25 0 1 0 1785958995 26316800 5865 4294967295 134512640 135167914 3221224448 3221221136 134581221 0 0 5 16386 0 0 0 17 1 0 0
Raw data (/proc/20845/statm): 6425 5865 162 162 0 6263 0
[pid=20845] vsize: 25700
Current children cumulated CPU time (s) 19.51
Current children cumulated vsize (Kb) 27828

[startup+30.0065 s]
Raw data (loadavg): 0.95 0.96 0.93 2/57 20845
Raw data (/proc/20840/stat): 20840 (minisat+_script) S 20839 20840 31915 0 -1 0 314 389 0 0 0 1 2 1 20 0 1 0 1785958987 2179072 234 4294967295 134512640 135087896 3221224512 3221223400 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (/proc/20840/statm): 532 234 485 147 0 385 0
[pid=20840] vsize: 2128
Raw data (/proc/20845/stat): 20845 (minisat+_bignum) R 20840 20840 31915 0 -1 0 9559 0 0 0 2871 57 0 0 25 0 1 0 1785958995 36200448 8332 4294967295 134512640 135167914 3221224448 3221223216 134691221 0 0 5 16386 0 0 0 17 1 0 0
Raw data (/proc/20845/statm): 8838 8332 162 162 0 8676 0
[pid=20845] vsize: 35352
Current children cumulated CPU time (s) 29.32
Current children cumulated vsize (Kb) 37480

[startup+40.0084 s]
Raw data (loadavg): 0.95 0.96 0.93 2/57 20845
Raw data (/proc/20840/stat): 20840 (minisat+_script) S 20839 20840 31915 0 -1 0 314 389 0 0 0 1 2 1 20 0 1 0 1785958987 2179072 234 4294967295 134512640 135087896 3221224512 3221223400 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (/proc/20840/statm): 532 234 485 147 0 385 0
[pid=20840] vsize: 2128
Raw data (/proc/20845/stat): 20845 (minisat+_bignum) R 20840 20840 31915 0 -1 0 9559 0 0 0 3871 57 0 0 25 0 1 0 1785958995 36200448 8332 4294967295 134512640 135167914 3221224448 3221223204 134697173 0 0 5 16386 0 0 0 17 1 0 0
Raw data (/proc/20845/statm): 8838 8332 162 162 0 8676 0
[pid=20845] vsize: 35352
Current children cumulated CPU time (s) 39.32
Current children cumulated vsize (Kb) 37480

[startup+50.0092 s]
Raw data (loadavg): 0.96 0.96 0.93 2/57 20845
Raw data (/proc/20840/stat): 20840 (minisat+_script) S 20839 20840 31915 0 -1 0 314 389 0 0 0 1 2 1 20 0 1 0 1785958987 2179072 234 4294967295 134512640 135087896 3221224512 3221223400 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (/proc/20840/statm): 532 234 485 147 0 385 0
[pid=20840] vsize: 2128
Raw data (/proc/20845/stat): 20845 (minisat+_bignum) R 20840 20840 31915 0 -1 0 9560 0 0 0 4871 58 0 0 25 0 1 0 1785958995 36204544 8333 4294967295 134512640 135167914 3221224448 3221223296 134596417 0 0 5 16386 0 0 0 17 0 0 0
Raw data (/proc/20845/statm): 8839 8333 162 162 0 8677 0
[pid=20845] vsize: 35356
Current children cumulated CPU time (s) 49.33
Current children cumulated vsize (Kb) 37484
One traced child (pid=20845) exited with status: 20
One traced child (pid=20840) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 59.4438
CPU time (s): 58.7811
CPU user time (s): 58.1512
CPU system time (s): 0.629904
CPU usage (%): 98.8851
Max. virtual memory (cumulated for all children) (Kb): 37484

Verifier Data

ERROR: no interpretation found !