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/MIPLIB/miplib3/normalized-mps-v2-20-10-nw04.opb
MD5SUMa5c401bba5afccf02c7b40cb1c595b15
Bench Categoryoptimization, medium integers (OPTMEDINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 30407
Optimality of the best value was proved NO
Number of terms in the objective function 87482
Biggest coefficient in the objective function 5220
Number of bits for the biggest coefficient in the objective function 13
Sum of the numbers in the objective function 120189580
Number of bits of the sum of numbers in the objective function 27
Biggest number in a constraint 5220
Number of bits of the biggest number in a constraint 13
Biggest sum of numbers in a constraint 120189580
Number of bits of the biggest sum of numbers27
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1204.44
Number of variables87482
Total number of constraints87518
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)87518
Number of constraints which are nor clauses,nor cardinality constraints0
Minimum length of a constraint1
Maximum length of a constraint42032

Trace number 1261

Launcher Data

LAUNCH ON wulflinc9 THE 2005-09-18 14:41:21 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=650 boxname=wulflinc9 idbench=650 idsolver=1 numberseed=0
MD5SUM SOLVER: 38f99674050b34630888bf623b924b59  /oldhome/oroussel/solvers/bsolo
MD5SUM BENCH:  a5c401bba5afccf02c7b40cb1c595b15  /oldhome/oroussel/tmp/wulflinc9/normalized-mps-v2-20-10-nw04.opb
REAL COMMAND:  bsolo /oldhome/oroussel/tmp/wulflinc9/normalized-mps-v2-20-10-nw04.opb
IDLAUNCH: 650
/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:        908204 kB
Buffers:         33804 kB
Cached:          65996 kB
SwapCached:       1044 kB
Active:          78324 kB
Inactive:        24208 kB
HighTotal:      131008 kB
HighFree:        61824 kB
LowTotal:       903652 kB
LowFree:        846380 kB
SwapTotal:     2097136 kB
SwapFree:      2095568 kB
Dirty:              40 kB
Writeback:           0 kB
Mapped:           5660 kB
Slab:            18304 kB
Committed_AS:    64168 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-18 14:41:45 (client local time) WITH STATUS 0 IN 20.1359 SECONDS
stats: 650 7 20.1359 0

Solver Data

c INFO: OSL Context initialized.
c Caught signal: 15
s UNKNOWN
c Exit Code: 0

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/1085/stat): 1085 (bsolo) R 1084 1085 30740 0 -1 0 19 0 0 0 0 0 0 0 23 0 1 0 1783826279 438272 3 4294967295 134512640 134736556 3221224560 3221224560 1073744960 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/1085/statm): 107 3 90 68 0 39 0
[pid=1085] vsize: 428
open syscall for file /etc/ld.so.preload
open syscall for file tls/i686/mmx/libosl.so
open syscall for file tls/i686/libosl.so
open syscall for file tls/mmx/libosl.so
open syscall for file tls/libosl.so
open syscall for file i686/mmx/libosl.so
open syscall for file i686/libosl.so
open syscall for file mmx/libosl.so
open syscall for file libosl.so
open syscall for file /oldhome/oroussel/lib/tls/i686/mmx/libosl.so
open syscall for file /oldhome/oroussel/lib/tls/i686/libosl.so
open syscall for file /oldhome/oroussel/lib/tls/mmx/libosl.so
open syscall for file /oldhome/oroussel/lib/tls/libosl.so
open syscall for file /oldhome/oroussel/lib/i686/mmx/libosl.so
open syscall for file /oldhome/oroussel/lib/i686/libosl.so
open syscall for file /oldhome/oroussel/lib/mmx/libosl.so
open syscall for file /oldhome/oroussel/lib/libosl.so
open syscall for file tls/i686/mmx/libstdc++-libc6.2-2.so.3
open syscall for file tls/i686/libstdc++-libc6.2-2.so.3
open syscall for file tls/mmx/libstdc++-libc6.2-2.so.3
open syscall for file tls/libstdc++-libc6.2-2.so.3
open syscall for file i686/mmx/libstdc++-libc6.2-2.so.3
open syscall for file i686/libstdc++-libc6.2-2.so.3
open syscall for file mmx/libstdc++-libc6.2-2.so.3
open syscall for file libstdc++-libc6.2-2.so.3
open syscall for file /oldhome/oroussel/lib/libstdc++-libc6.2-2.so.3
open syscall for file /etc/ld.so.cache
open syscall for file /usr/lib/libstdc++-libc6.2-2.so.3
open syscall for file tls/i686/mmx/libm.so.6
open syscall for file tls/i686/libm.so.6
open syscall for file tls/mmx/libm.so.6
open syscall for file tls/libm.so.6
open syscall for file i686/mmx/libm.so.6
open syscall for file i686/libm.so.6
open syscall for file mmx/libm.so.6
open syscall for file libm.so.6
open syscall for file /oldhome/oroussel/lib/libm.so.6
open syscall for file /lib/tls/libm.so.6
open syscall for file tls/i686/mmx/libpthread.so.0
open syscall for file tls/i686/libpthread.so.0
open syscall for file tls/mmx/libpthread.so.0
open syscall for file tls/libpthread.so.0
open syscall for file i686/mmx/libpthread.so.0
open syscall for file i686/libpthread.so.0
open syscall for file mmx/libpthread.so.0
open syscall for file libpthread.so.0
open syscall for file /oldhome/oroussel/lib/libpthread.so.0
open syscall for file /lib/tls/libpthread.so.0
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 tls/i686/mmx/libgcc_s.so.1
open syscall for file tls/i686/libgcc_s.so.1
open syscall for file tls/mmx/libgcc_s.so.1
open syscall for file tls/libgcc_s.so.1
open syscall for file i686/mmx/libgcc_s.so.1
open syscall for file i686/libgcc_s.so.1
open syscall for file mmx/libgcc_s.so.1
open syscall for file libgcc_s.so.1
open syscall for file /oldhome/oroussel/lib/libgcc_s.so.1
open syscall for file /lib/libgcc_s.so.1
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /etc/localtime
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/tmp/wulflinc9/normalized-mps-v2-20-10-nw04.opb

[startup+10.0032 s]
Raw data (loadavg): 0.97 1.01 0.99 2/56 1085
Raw data (/proc/1085/stat): 1085 (bsolo) R 1084 1085 30740 0 -1 0 140467 0 0 0 639 303 0 0 25 0 1 0 1783826279 578609152 140378 4294967295 134512640 134736556 3221224560 3221223084 1077399562 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/1085/statm): 141262 140378 1116 68 0 141194 0
[pid=1085] vsize: 565048
Current children cumulated CPU time (s) 9.42
Current children cumulated vsize (Kb) 565048

[startup+20.004 s]
Raw data (loadavg): 0.97 1.01 0.99 2/56 1085
Raw data (/proc/1085/stat): 1085 (bsolo) R 1084 1085 30740 0 -1 0 225169 0 0 0 1447 458 0 0 25 0 1 0 1783826279 925609984 225017 4294967295 134512640 134736556 3221224560 3221223104 134573621 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/1085/statm): 225979 225017 1116 68 0 225911 0
[pid=1085] vsize: 903916
Current children cumulated CPU time (s) 19.05
Current children cumulated vsize (Kb) 903916



Mem limit exceeded: sending SIGTERM then SIGKILL

[startup+20.9403 s]
Raw data (loadavg): 0.98 1.01 0.99 1/56 1085
Raw data (/proc/1085/stat): 1085 (bsolo) T 1084 1085 30740 0 -1 0 229584 0 8 0 1502 468 0 0 20 0 1 0 1783826279 943738880 228504 4294967295 134512640 134736556 3221224560 3221222796 1077782939 0 0 5 16384 3222434794 0 0 17 0 0 0
Raw data (/proc/1085/statm): 230405 228504 1116 68 0 230337 0
[pid=1085] vsize: 921620
Current children cumulated CPU time (s) 19.7
Current children cumulated vsize (Kb) 921620

Sending SIGTERM to -1085
Sleeping 2 seconds
Sending SIGKILL to -1085
One traced child (pid=1085) ended because it received signal 9 (SIGKILL)
All traced children have exited ! Game is over.

Child ended because it received signal 9 (SIGKILL)
Real time (s): 23.3672
CPU time (s): 20.1359
CPU user time (s): 15.0297
CPU system time (s): 5.10622
CPU usage (%): 86.1718
Max. virtual memory (cumulated for all children) (Kb): 921620

Verifier Data

ERROR: no interpretation found !