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-v2-20-10-80bau3b.opb
MD5SUM482f3c6a016323a565c292702d2c5673
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 183640
Biggest coefficient in the objective function 179765856174080000
Number of bits for the biggest coefficient in the objective function 58
Sum of the numbers in the objective function 6977628092477113102
Number of bits of the sum of numbers in the objective function 63
Biggest number in a constraint 179765856174080000
Number of bits of the biggest number in a constraint 58
Biggest sum of numbers in a constraint 6977628092477113102
Number of bits of the biggest sum of numbers63
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark42.7925
Number of variables228990
Total number of constraints5220
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 constraints5220
Minimum length of a constraint10
Maximum length of a constraint3330

Trace number 2650

Launcher Data

LAUNCH ON wulflinc12 THE 2005-09-18 20:38:58 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=2831 boxname=wulflinc12 idbench=487 idsolver=3 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  482f3c6a016323a565c292702d2c5673  /oldhome/oroussel/tmp/wulflinc12/normalized-mps-v2-20-10-80bau3b.opb
REAL COMMAND:  minisat+_script /oldhome/oroussel/tmp/wulflinc12/normalized-mps-v2-20-10-80bau3b.opb
IDLAUNCH: 2831
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.091
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	: 888.83

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.091
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:        871552 kB
Buffers:         38780 kB
Cached:          83756 kB
SwapCached:        544 kB
Active:          89020 kB
Inactive:        45784 kB
HighTotal:      131008 kB
HighFree:        47180 kB
LowTotal:       903652 kB
LowFree:        824372 kB
SwapTotal:     2097136 kB
SwapFree:      2096072 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5884 kB
Slab:            22660 kB
Committed_AS:    64164 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-18 20:40:23 (client local time) WITH STATUS 20 IN 82.9414 SECONDS
stats: 2831 7 82.9414 20

Solver Data

c Parsing PB file...
c PARSE ERROR! [line 9803] Integer overflow. Use BigNum-version.
c OK -- Running BigNum-version instead...
c Parsing PB file...
c Converting 4862 PB-constraints to clauses...
c   -- Unit propagations: pppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppp  -- Detecting intervals from adjacent constraints: (none)
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              : 81.6226 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/26155/stat): 26155 (minisat+_script) R 26154 26155 8263 0 -1 0 19 0 0 0 0 0 0 0 22 0 1 0 1785960293 712704 3 4294967295 134512640 135087896 3221224496 3221224496 1073744960 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/26155/statm): 174 3 169 147 0 27 0
[pid=26155] 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=26156
New process pid=26157
New process pid=26158
execve syscall for /bin/sed executable
One traced child (pid=26157) 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=26158) exited with status: 0
One traced child (pid=26156) exited with status: 0
New process pid=26159
execve syscall for /oldhome/oroussel/solvers/minisat+_64-bit_static executable
open syscall for file /dev/null
open syscall for file /oldhome/oroussel/tmp/wulflinc12/normalized-mps-v2-20-10-80bau3b.opb
One traced child (pid=26159) exited with status: 5
open syscall for file /oldhome/oroussel/solvers/
New process pid=26160
execve syscall for /oldhome/oroussel/solvers/minisat+_bignum_static executable
open syscall for file /dev/null
open syscall for file /oldhome/oroussel/tmp/wulflinc12/normalized-mps-v2-20-10-80bau3b.opb

[startup+10.0039 s]
Raw data (loadavg): 0.94 0.96 0.91 2/57 26160
Raw data (/proc/26155/stat): 26155 (minisat+_script) S 26154 26155 8263 0 -1 0 314 332 0 0 0 1 1 2 20 0 1 0 1785960293 2179072 234 4294967295 134512640 135087896 3221224496 3221223384 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (/proc/26155/statm): 532 234 485 147 0 385 0
[pid=26155] vsize: 2128
Raw data (/proc/26160/stat): 26160 (minisat+_bignum) R 26155 26155 8263 0 -1 0 4809 0 0 0 940 26 0 0 25 0 1 0 1785960303 20426752 4505 4294967295 134512640 135167914 3221224448 3221223272 134697041 0 0 5 16386 0 0 0 17 1 0 0
Raw data (/proc/26160/statm): 4987 4505 162 162 0 4825 0
[pid=26160] vsize: 19948
Current children cumulated CPU time (s) 9.7
Current children cumulated vsize (Kb) 22076

[startup+20.0057 s]
Raw data (loadavg): 0.95 0.96 0.91 2/57 26160
Raw data (/proc/26155/stat): 26155 (minisat+_script) S 26154 26155 8263 0 -1 0 314 332 0 0 0 1 1 2 20 0 1 0 1785960293 2179072 234 4294967295 134512640 135087896 3221224496 3221223384 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (/proc/26155/statm): 532 234 485 147 0 385 0
[pid=26155] vsize: 2128
Raw data (/proc/26160/stat): 26160 (minisat+_bignum) R 26155 26155 8263 0 -1 0 10398 0 0 0 1882 54 0 0 25 0 1 0 1785960303 44744704 9404 4294967295 134512640 135167914 3221224448 3221220832 134849061 0 0 5 16386 0 0 0 17 0 0 0
Raw data (/proc/26160/statm): 10924 9404 162 162 0 10762 0
[pid=26160] vsize: 43696
Current children cumulated CPU time (s) 19.4
Current children cumulated vsize (Kb) 45824

[startup+30.0065 s]
Raw data (loadavg): 0.96 0.96 0.91 1/57 26160
Raw data (/proc/26155/stat): 26155 (minisat+_script) S 26154 26155 8263 0 -1 0 314 332 0 0 0 1 1 2 20 0 1 0 1785960293 2179072 234 4294967295 134512640 135087896 3221224496 3221223384 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (/proc/26155/statm): 532 234 485 147 0 385 0
[pid=26155] vsize: 2128
Raw data (/proc/26160/stat): 26160 (minisat+_bignum) T 26155 26155 8263 0 -1 0 10830 0 0 0 2865 63 0 0 25 0 1 0 1785960303 46481408 9836 4294967295 134512640 135167914 3221224448 3221223288 134865821 0 0 5 16386 3222434794 0 0 17 0 0 0
Raw data (/proc/26160/statm): 11348 9836 162 162 0 11186 0
[pid=26160] vsize: 45392
Current children cumulated CPU time (s) 29.32
Current children cumulated vsize (Kb) 47520

[startup+40.0074 s]
Raw data (loadavg): 0.96 0.96 0.91 2/57 26160
Raw data (/proc/26155/stat): 26155 (minisat+_script) S 26154 26155 8263 0 -1 0 314 332 0 0 0 1 1 2 20 0 1 0 1785960293 2179072 234 4294967295 134512640 135087896 3221224496 3221223384 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (/proc/26155/statm): 532 234 485 147 0 385 0
[pid=26155] vsize: 2128
Raw data (/proc/26160/stat): 26160 (minisat+_bignum) R 26155 26155 8263 0 -1 0 12111 0 0 0 3838 75 0 0 25 0 1 0 1785960303 51122176 11117 4294967295 134512640 135167914 3221224448 3221223284 134860166 0 0 5 16386 0 0 0 17 1 0 0
Raw data (/proc/26160/statm): 12481 11117 162 162 0 12319 0
[pid=26160] vsize: 49924
Current children cumulated CPU time (s) 39.17
Current children cumulated vsize (Kb) 52052

[startup+50.0092 s]
Raw data (loadavg): 0.97 0.96 0.91 2/57 26160
Raw data (/proc/26155/stat): 26155 (minisat+_script) S 26154 26155 8263 0 -1 0 314 332 0 0 0 1 1 2 20 0 1 0 1785960293 2179072 234 4294967295 134512640 135087896 3221224496 3221223384 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (/proc/26155/statm): 532 234 485 147 0 385 0
[pid=26155] vsize: 2128
Raw data (/proc/26160/stat): 26160 (minisat+_bignum) R 26155 26155 8263 0 -1 0 13502 0 0 0 4814 85 0 0 25 0 1 0 1785960303 56188928 12390 4294967295 134512640 135167914 3221224448 3221221496 134522321 0 0 5 16386 0 0 0 17 0 0 0
Raw data (/proc/26160/statm): 13718 12390 162 162 0 13556 0
[pid=26160] vsize: 54872
Current children cumulated CPU time (s) 49.03
Current children cumulated vsize (Kb) 57000

[startup+60.01 s]
Raw data (loadavg): 0.97 0.96 0.91 1/57 26160
Raw data (/proc/26155/stat): 26155 (minisat+_script) S 26154 26155 8263 0 -1 0 314 332 0 0 0 1 1 2 20 0 1 0 1785960293 2179072 234 4294967295 134512640 135087896 3221224496 3221223384 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (/proc/26155/statm): 532 234 485 147 0 385 0
[pid=26155] vsize: 2128
Raw data (/proc/26160/stat): 26160 (minisat+_bignum) T 26155 26155 8263 0 -1 0 14530 0 0 0 5793 95 0 0 25 0 1 0 1785960303 59367424 13418 4294967295 134512640 135167914 3221224448 3221223288 134865821 0 0 5 16386 3222434794 0 0 17 0 0 0
Raw data (/proc/26160/statm): 14494 13418 162 162 0 14332 0
[pid=26160] vsize: 57976
Current children cumulated CPU time (s) 58.92
Current children cumulated vsize (Kb) 60104

[startup+70.0108 s]
Raw data (loadavg): 0.98 0.96 0.91 2/57 26160
Raw data (/proc/26155/stat): 26155 (minisat+_script) S 26154 26155 8263 0 -1 0 314 332 0 0 0 1 1 2 20 0 1 0 1785960293 2179072 234 4294967295 134512640 135087896 3221224496 3221223384 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (/proc/26155/statm): 532 234 485 147 0 385 0
[pid=26155] vsize: 2128
Raw data (/proc/26160/stat): 26160 (minisat+_bignum) R 26155 26155 8263 0 -1 0 15325 0 0 0 6773 103 0 0 25 0 1 0 1785960303 62439424 14213 4294967295 134512640 135167914 3221224448 3221220780 134722218 0 0 5 16386 0 0 0 17 1 0 0
Raw data (/proc/26160/statm): 15244 14213 162 162 0 15082 0
[pid=26160] vsize: 60976
Current children cumulated CPU time (s) 68.8
Current children cumulated vsize (Kb) 63104

[startup+80.0127 s]
Raw data (loadavg): 0.98 0.96 0.91 2/57 26160
Raw data (/proc/26155/stat): 26155 (minisat+_script) S 26154 26155 8263 0 -1 0 314 332 0 0 0 1 1 2 20 0 1 0 1785960293 2179072 234 4294967295 134512640 135087896 3221224496 3221223384 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (/proc/26155/statm): 532 234 485 147 0 385 0
[pid=26155] vsize: 2128
Raw data (/proc/26160/stat): 26160 (minisat+_bignum) R 26155 26155 8263 0 -1 0 16094 0 0 0 7758 109 0 0 25 0 1 0 1785960303 64905216 14982 4294967295 134512640 135167914 3221224448 3221223312 134608335 0 0 5 16386 0 0 0 17 1 0 0
Raw data (/proc/26160/statm): 15846 14982 162 162 0 15684 0
[pid=26160] vsize: 63384
Current children cumulated CPU time (s) 78.71
Current children cumulated vsize (Kb) 65512
One traced child (pid=26160) exited with status: 20
One traced child (pid=26155) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 84.3408
CPU time (s): 82.9414
CPU user time (s): 81.6436
CPU system time (s): 1.2978
CPU usage (%): 98.3408
Max. virtual memory (cumulated for all children) (Kb): 65512

Verifier Data

ERROR: no interpretation found !