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-ship12s.opb
MD5SUM8b36f38cb0ceb42bd2113a818ef52485
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 82890
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 204819735955723812
Number of bits of the sum of numbers in the objective function 58
Biggest number in a constraint 1511023181824000
Number of bits of the biggest number in a constraint 51
Biggest sum of numbers in a constraint 204819735955723812
Number of bits of the biggest sum of numbers58
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark18.0513
Number of variables82890
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 constraint1470

Trace number 2640

Launcher Data

LAUNCH ON wulflinc17 THE 2005-09-18 20:37:40 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=2821 boxname=wulflinc17 idbench=477 idsolver=3 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  8b36f38cb0ceb42bd2113a818ef52485  /oldhome/oroussel/tmp/wulflinc17/normalized-mps-v2-20-10-ship12s.opb
REAL COMMAND:  minisat+_script /oldhome/oroussel/tmp/wulflinc17/normalized-mps-v2-20-10-ship12s.opb
IDLAUNCH: 2821
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.072
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	: 3
cpu MHz		: 451.072
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:        912016 kB
Buffers:         31804 kB
Cached:          63492 kB
SwapCached:        516 kB
Active:          40568 kB
Inactive:        57160 kB
HighTotal:      131008 kB
HighFree:        63560 kB
LowTotal:       903652 kB
LowFree:        848456 kB
SwapTotal:     2097892 kB
SwapFree:      2096672 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5680 kB
Slab:            19172 kB
Committed_AS:    64184 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-18 20:38:17 (client local time) WITH STATUS 20 IN 36.1755 SECONDS
stats: 2821 7 36.1755 20

Solver Data

c Parsing PB file...
c PARSE ERROR! [line 2767] Integer overflow. Use BigNum-version.
c OK -- Running BigNum-version instead...
c Parsing PB file...
c Converting 1403 PB-constraints to clauses...
c   -- Unit propagations: pppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppp  -- 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              : 35.5956 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/27434/stat): 27434 (minisat+_script) R 27433 27434 19316 0 -1 0 19 0 0 0 0 0 0 0 23 0 1 0 1844216699 712704 3 4294967295 134512640 135087896 3221224496 3221224496 1073744960 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/27434/statm): 174 3 169 147 0 27 0
[pid=27434] 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=27435
New process pid=27436
New process pid=27437
execve syscall for /bin/sed executable
One traced child (pid=27436) 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=27437) exited with status: 0
One traced child (pid=27435) exited with status: 0
New process pid=27438
execve syscall for /oldhome/oroussel/solvers/minisat+_64-bit_static executable
open syscall for file /dev/null
open syscall for file /oldhome/oroussel/tmp/wulflinc17/normalized-mps-v2-20-10-ship12s.opb
One traced child (pid=27438) exited with status: 5
open syscall for file /oldhome/oroussel/solvers/
New process pid=27439
execve syscall for /oldhome/oroussel/solvers/minisat+_bignum_static executable
open syscall for file /dev/null
open syscall for file /oldhome/oroussel/tmp/wulflinc17/normalized-mps-v2-20-10-ship12s.opb

[startup+10.0039 s]
Raw data (loadavg): 0.91 0.95 0.96 2/57 27439
Raw data (/proc/27434/stat): 27434 (minisat+_script) S 27433 27434 19316 0 -1 0 314 332 0 0 0 0 0 0 22 0 1 0 1844216699 2179072 234 4294967295 134512640 135087896 3221224496 3221223384 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (/proc/27434/statm): 532 234 485 147 0 385 0
[pid=27434] vsize: 2128
Raw data (/proc/27439/stat): 27439 (minisat+_bignum) R 27434 27434 19316 0 -1 0 5048 0 0 0 940 27 0 0 25 0 1 0 1844216706 23474176 4747 4294967295 134512640 135167914 3221224448 3221222800 134845933 0 0 5 16386 0 0 0 17 1 0 0
Raw data (/proc/27439/statm): 5731 4747 162 162 0 5569 0
[pid=27439] vsize: 22924
Current children cumulated CPU time (s) 9.67
Current children cumulated vsize (Kb) 25052

[startup+20.0045 s]
Raw data (loadavg): 0.92 0.95 0.96 2/57 27439
Raw data (/proc/27434/stat): 27434 (minisat+_script) S 27433 27434 19316 0 -1 0 314 332 0 0 0 0 0 0 22 0 1 0 1844216699 2179072 234 4294967295 134512640 135087896 3221224496 3221223384 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (/proc/27434/statm): 532 234 485 147 0 385 0
[pid=27434] vsize: 2128
Raw data (/proc/27439/stat): 27439 (minisat+_bignum) R 27434 27434 19316 0 -1 0 7160 0 0 0 1911 40 0 0 25 0 1 0 1844216706 32108544 6859 4294967295 134512640 135167914 3221224448 3221222864 134849179 0 0 5 16386 0 0 0 17 1 0 0
Raw data (/proc/27439/statm): 7839 6859 162 162 0 7677 0
[pid=27439] vsize: 31356
Current children cumulated CPU time (s) 19.51
Current children cumulated vsize (Kb) 33484

[startup+30.0051 s]
Raw data (loadavg): 0.93 0.95 0.96 2/57 27439
Raw data (/proc/27434/stat): 27434 (minisat+_script) S 27433 27434 19316 0 -1 0 314 332 0 0 0 0 0 0 22 0 1 0 1844216699 2179072 234 4294967295 134512640 135087896 3221224496 3221223384 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (/proc/27434/statm): 532 234 485 147 0 385 0
[pid=27434] vsize: 2128
Raw data (/proc/27439/stat): 27439 (minisat+_bignum) R 27434 27434 19316 0 -1 0 9037 0 0 0 2886 53 0 0 25 0 1 0 1844216706 39743488 8736 4294967295 134512640 135167914 3221224448 3221223204 134697070 0 0 5 16386 0 0 0 17 1 0 0
Raw data (/proc/27439/statm): 9703 8736 162 162 0 9541 0
[pid=27439] vsize: 38812
Current children cumulated CPU time (s) 29.39
Current children cumulated vsize (Kb) 40940
One traced child (pid=27439) exited with status: 20
One traced child (pid=27434) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 36.7606
CPU time (s): 36.1755
CPU user time (s): 35.6056
CPU system time (s): 0.569913
CPU usage (%): 98.4082
Max. virtual memory (cumulated for all children) (Kb): 40940

Verifier Data

ERROR: no interpretation found !