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-ship12l.opb
MD5SUMbdd9a8da4deb9b8348cff99945476562
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 162810
Biggest coefficient in the objective function 1511023181824000
Number of bits for the biggest coefficient in the objective function 51
Sum of the numbers in the objective function 426775792258590390
Number of bits of the sum of numbers in the objective function 59
Biggest number in a constraint 1511023181824000
Number of bits of the biggest number in a constraint 51
Biggest sum of numbers in a constraint 426775792258590390
Number of bits of the biggest sum of numbers59
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark28.5317
Number of variables162810
Total number of constraints1042
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 constraints1042
Minimum length of a constraint30
Maximum length of a constraint2250

Trace number 2643

Launcher Data

LAUNCH ON wulflinc9 THE 2005-09-18 20:37:03 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=2820 boxname=wulflinc9 idbench=476 idsolver=3 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  bdd9a8da4deb9b8348cff99945476562  /oldhome/oroussel/tmp/wulflinc9/normalized-mps-v2-20-10-ship12l.opb
REAL COMMAND:  minisat+_script /oldhome/oroussel/tmp/wulflinc9/normalized-mps-v2-20-10-ship12l.opb
IDLAUNCH: 2820
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.242
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		: 451.242
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:        898752 kB
Buffers:         30740 kB
Cached:          78648 kB
SwapCached:       1044 kB
Active:          68092 kB
Inactive:        44036 kB
HighTotal:      131008 kB
HighFree:        48776 kB
LowTotal:       903652 kB
LowFree:        849976 kB
SwapTotal:     2097136 kB
SwapFree:      2095568 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5660 kB
Slab:            18064 kB
Committed_AS:    64132 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-18 20:38:33 (client local time) WITH STATUS 20 IN 88.7405 SECONDS
stats: 2820 7 88.7405 20

Solver Data

c Parsing PB file...
c PARSE ERROR! [line 5431] Integer overflow. Use BigNum-version.
c OK -- Running BigNum-version instead...
c Parsing PB file...
c Converting 1409 PB-constraints to clauses...
c   -- Unit propagations: ppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppp  -- 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              : 87.6027 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/9595/stat): 9595 (minisat+_script) R 9594 9595 30740 0 -1 0 19 0 0 0 0 0 0 0 20 0 1 0 1785960712 712704 3 4294967295 134512640 135087896 3221224496 3221224496 1073744960 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/9595/statm): 174 3 169 147 0 27 0
[pid=9595] 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=9596
New process pid=9597
New process pid=9598
execve syscall for /bin/sed executable
One traced child (pid=9597) 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=9598) exited with status: 0
One traced child (pid=9596) exited with status: 0
New process pid=9599
execve syscall for /oldhome/oroussel/solvers/minisat+_64-bit_static executable
open syscall for file /dev/null
open syscall for file /oldhome/oroussel/tmp/wulflinc9/normalized-mps-v2-20-10-ship12l.opb
One traced child (pid=9599) exited with status: 5
open syscall for file /oldhome/oroussel/solvers/
New process pid=9600
execve syscall for /oldhome/oroussel/solvers/minisat+_bignum_static executable
open syscall for file /dev/null
open syscall for file /oldhome/oroussel/tmp/wulflinc9/normalized-mps-v2-20-10-ship12l.opb

[startup+10.0035 s]
Raw data (loadavg): 0.92 0.96 0.91 2/57 9600
Raw data (/proc/9595/stat): 9595 (minisat+_script) S 9594 9595 30740 0 -1 0 314 332 0 0 0 0 1 2 16 0 1 0 1785960712 2179072 234 4294967295 134512640 135087896 3221224496 3221223384 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (/proc/9595/statm): 532 234 485 147 0 385 0
[pid=9595] vsize: 2128
Raw data (/proc/9600/stat): 9600 (minisat+_bignum) R 9595 9595 30740 0 -1 0 8435 0 0 0 907 42 0 0 25 0 1 0 1785960720 40099840 7813 4294967295 134512640 135167914 3221224448 3221222800 134845901 0 0 5 16386 0 0 0 17 0 0 0
Raw data (/proc/9600/statm): 9790 7813 162 162 0 9628 0
[pid=9600] vsize: 39160
Current children cumulated CPU time (s) 9.52
Current children cumulated vsize (Kb) 41288

[startup+20.0053 s]
Raw data (loadavg): 0.93 0.96 0.91 2/57 9600
Raw data (/proc/9595/stat): 9595 (minisat+_script) S 9594 9595 30740 0 -1 0 314 332 0 0 0 0 1 2 16 0 1 0 1785960712 2179072 234 4294967295 134512640 135087896 3221224496 3221223384 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (/proc/9595/statm): 532 234 485 147 0 385 0
[pid=9595] vsize: 2128
Raw data (/proc/9600/stat): 9600 (minisat+_bignum) R 9595 9595 30740 0 -1 0 9712 0 0 0 1888 50 0 0 25 0 1 0 1785960720 45146112 8959 4294967295 134512640 135167914 3221224448 3221221136 134849108 0 0 5 16386 0 0 0 17 1 0 0
Raw data (/proc/9600/statm): 11022 8959 162 162 0 10860 0
[pid=9600] vsize: 44088
Current children cumulated CPU time (s) 19.41
Current children cumulated vsize (Kb) 46216

[startup+30.006 s]
Raw data (loadavg): 0.94 0.96 0.91 2/57 9600
Raw data (/proc/9595/stat): 9595 (minisat+_script) S 9594 9595 30740 0 -1 0 314 332 0 0 0 0 1 2 16 0 1 0 1785960712 2179072 234 4294967295 134512640 135087896 3221224496 3221223384 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (/proc/9595/statm): 532 234 485 147 0 385 0
[pid=9595] vsize: 2128
Raw data (/proc/9600/stat): 9600 (minisat+_bignum) R 9595 9595 30740 0 -1 0 12203 0 0 0 2853 67 0 0 25 0 1 0 1785960720 53067776 10913 4294967295 134512640 135167914 3221224448 3221222768 134612528 0 0 5 16386 0 0 0 17 1 0 0
Raw data (/proc/9600/statm): 12956 10913 162 162 0 12794 0
[pid=9600] vsize: 51824
Current children cumulated CPU time (s) 29.23
Current children cumulated vsize (Kb) 53952

[startup+40.0078 s]
Raw data (loadavg): 0.95 0.96 0.91 2/57 9600
Raw data (/proc/9595/stat): 9595 (minisat+_script) S 9594 9595 30740 0 -1 0 314 332 0 0 0 0 1 2 16 0 1 0 1785960712 2179072 234 4294967295 134512640 135087896 3221224496 3221223384 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (/proc/9595/statm): 532 234 485 147 0 385 0
[pid=9595] vsize: 2128
Raw data (/proc/9600/stat): 9600 (minisat+_bignum) R 9595 9595 30740 0 -1 0 14367 0 0 0 3823 82 0 0 25 0 1 0 1785960720 60211200 12689 4294967295 134512640 135167914 3221224448 3221222828 134842996 0 0 5 16386 0 0 0 17 1 0 0
Raw data (/proc/9600/statm): 14700 12689 162 162 0 14538 0
[pid=9600] vsize: 58800
Current children cumulated CPU time (s) 39.08
Current children cumulated vsize (Kb) 60928

[startup+50.0086 s]
Raw data (loadavg): 0.96 0.96 0.91 2/57 9600
Raw data (/proc/9595/stat): 9595 (minisat+_script) S 9594 9595 30740 0 -1 0 314 332 0 0 0 0 1 2 16 0 1 0 1785960712 2179072 234 4294967295 134512640 135087896 3221224496 3221223384 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (/proc/9595/statm): 532 234 485 147 0 385 0
[pid=9595] vsize: 2128
Raw data (/proc/9600/stat): 9600 (minisat+_bignum) R 9595 9595 30740 0 -1 0 17983 0 0 0 4774 105 0 0 25 0 1 0 1785960720 73981952 16072 4294967295 134512640 135167914 3221224448 3221223276 134522184 0 0 5 16386 0 0 0 17 0 0 0
Raw data (/proc/9600/statm): 18062 16072 162 162 0 17900 0
[pid=9600] vsize: 72248
Current children cumulated CPU time (s) 48.82
Current children cumulated vsize (Kb) 74376

[startup+60.0094 s]
Raw data (loadavg): 0.96 0.96 0.91 2/57 9600
Raw data (/proc/9595/stat): 9595 (minisat+_script) S 9594 9595 30740 0 -1 0 314 332 0 0 0 0 1 2 16 0 1 0 1785960712 2179072 234 4294967295 134512640 135087896 3221224496 3221223384 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (/proc/9595/statm): 532 234 485 147 0 385 0
[pid=9595] vsize: 2128
Raw data (/proc/9600/stat): 9600 (minisat+_bignum) R 9595 9595 30740 0 -1 0 17984 0 0 0 5774 105 0 0 25 0 1 0 1785960720 73981952 16073 4294967295 134512640 135167914 3221224448 3221223216 134691221 0 0 5 16386 0 0 0 17 1 0 0
Raw data (/proc/9600/statm): 18062 16073 162 162 0 17900 0
[pid=9600] vsize: 72248
Current children cumulated CPU time (s) 58.82
Current children cumulated vsize (Kb) 74376

[startup+70.0101 s]
Raw data (loadavg): 0.97 0.96 0.91 2/57 9600
Raw data (/proc/9595/stat): 9595 (minisat+_script) S 9594 9595 30740 0 -1 0 314 332 0 0 0 0 1 2 16 0 1 0 1785960712 2179072 234 4294967295 134512640 135087896 3221224496 3221223384 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (/proc/9595/statm): 532 234 485 147 0 385 0
[pid=9595] vsize: 2128
Raw data (/proc/9600/stat): 9600 (minisat+_bignum) R 9595 9595 30740 0 -1 0 17984 0 0 0 6774 106 0 0 25 0 1 0 1785960720 73981952 16073 4294967295 134512640 135167914 3221224448 3221223204 134697170 0 0 5 16386 0 0 0 17 1 0 0
Raw data (/proc/9600/statm): 18062 16073 162 162 0 17900 0
[pid=9600] vsize: 72248
Current children cumulated CPU time (s) 68.83
Current children cumulated vsize (Kb) 74376

[startup+80.0109 s]
Raw data (loadavg): 0.97 0.96 0.91 2/57 9600
Raw data (/proc/9595/stat): 9595 (minisat+_script) S 9594 9595 30740 0 -1 0 314 332 0 0 0 0 1 2 16 0 1 0 1785960712 2179072 234 4294967295 134512640 135087896 3221224496 3221223384 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (/proc/9595/statm): 532 234 485 147 0 385 0
[pid=9595] vsize: 2128
Raw data (/proc/9600/stat): 9600 (minisat+_bignum) R 9595 9595 30740 0 -1 0 17984 0 0 0 7774 106 0 0 25 0 1 0 1785960720 73981952 16073 4294967295 134512640 135167914 3221224448 3221223216 134691221 0 0 5 16386 0 0 0 17 1 0 0
Raw data (/proc/9600/statm): 18062 16073 162 162 0 17900 0
[pid=9600] vsize: 72248
Current children cumulated CPU time (s) 78.83
Current children cumulated vsize (Kb) 74376
One traced child (pid=9600) exited with status: 20
One traced child (pid=9595) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 89.9063
CPU time (s): 88.7405
CPU user time (s): 87.6167
CPU system time (s): 1.12383
CPU usage (%): 98.7034
Max. virtual memory (cumulated for all children) (Kb): 74376

Verifier Data

ERROR: no interpretation found !