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-v2-13-7/ftp.netlib.org/lp/data/normalized-mps-v2-13-7-fffff800.opb
MD5SUMebc468f65dc9d723d06e698aa1880f66
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 160
Biggest coefficient in the objective function 524288
Number of bits for the biggest coefficient in the objective function 20
Sum of the numbers in the objective function 8388600
Number of bits of the sum of numbers in the objective function 23
Biggest number in a constraint 15728640000000000
Number of bits of the biggest number in a constraint 54
Biggest sum of numbers in a constraint 383727820204435150
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 benchmark12.4251
Number of variables17080
Total number of constraints524
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 constraints524
Minimum length of a constraint20
Maximum length of a constraint5020

Trace number 10264

Launcher Data

LAUNCH ON wulflinc32 THE 2005-09-23 17:44:40 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=9014 boxname=wulflinc32 idbench=810 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  ebc468f65dc9d723d06e698aa1880f66  /oldhome/oroussel/tmp/wulflinc32/normalized-mps-v2-13-7-fffff800.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc32/normalized-mps-v2-13-7-fffff800.opb
IDLAUNCH: 9014
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.145
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		: 451.145
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	: 901.12

/proc/meminfo:
MemTotal:      1034724 kB
MemFree:        918612 kB
Buffers:         15232 kB
Cached:          80920 kB
SwapCached:          0 kB
Active:          45120 kB
Inactive:        53892 kB
HighTotal:      131072 kB
HighFree:        45792 kB
LowTotal:       903652 kB
LowFree:        872820 kB
SwapTotal:     2097892 kB
SwapFree:      2097892 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6988 kB
Slab:            11452 kB
Committed_AS:    63660 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-23 17:46:04 (client local time) WITH STATUS 0 IN 82.7324 SECONDS
stats: 9014 7 82.7324 0

Solver Data

c This solver internally uses Chaff 2004.11.15 Simplified
*** glibc detected *** pb2sat: free(): invalid next size (fast): 0x18806868 ***
======= Backtrace: =========
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======= Memory map: ========
08048000-081b1000 r-xp 00000000 00:14 3276939    /oldhome/oroussel/solvers/pb2sat
081b1000-081b4000 rw-p 00168000 00:14 3276939    /oldhome/oroussel/solvers/pb2sat
081b4000-18834000 rw-p 081b4000 00:00 0 
40000000-40001000 rw-p 40000000 00:00 0 
40024000-40045000 rw-p 40024000 00:00 0 
4e296000-4ea97000 rw-p 4e296000 00:00 0 
52697000-58698000 rw-p 40069000 00:00 0 
58700000-58724000 rw-p 58700000 00:00 0 
58724000-58800000 ---p 58724000 00:00 0 
5c699000-70e9b000 rw-p 5c699000 00:00 0 
bfe63000-c0000000 rw-p bfe63000 00:00 0 
ffffe000-fffff000 ---p 00000000 00:00 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/8590/stat): 8590 (pb2sat) R 8589 8590 4005 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 22045452 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/8590/statm): 373 2 364 364 0 9 0
[pid=8590] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc32/normalized-mps-v2-13-7-fffff800.opb

[startup+10.0022 s]
Raw data (loadavg): 1.18 1.04 0.98 2/55 8590
Raw data (/proc/8590/stat): 8590 (pb2sat) R 8589 8590 4005 0 -1 0 30188 0 0 0 925 71 0 0 25 0 1 0 22045452 97726464 19067 4294967295 134512640 135987407 3221224560 3219861584 134887932 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8590/statm): 23859 19067 364 364 0 23495 0
[pid=8590] vsize: 95436
Current children cumulated CPU time (s) 9.96
Current children cumulated vsize (Kb) 95436

[startup+20.003 s]
Raw data (loadavg): 1.15 1.04 0.98 2/55 8590
Raw data (/proc/8590/stat): 8590 (pb2sat) R 8589 8590 4005 0 -1 0 60674 0 0 0 1858 135 0 0 25 0 1 0 22045452 192471040 38346 4294967295 134512640 135987407 3221224560 3219890748 135486837 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8590/statm): 46990 38346 364 364 0 46626 0
[pid=8590] vsize: 187960
Current children cumulated CPU time (s) 19.93
Current children cumulated vsize (Kb) 187960

[startup+30.0037 s]
Raw data (loadavg): 1.13 1.04 0.98 2/55 8590
Raw data (/proc/8590/stat): 8590 (pb2sat) R 8589 8590 4005 0 -1 0 103355 0 0 0 2762 227 0 0 25 0 1 0 22045452 324616192 58834 4294967295 134512640 135987407 3221224560 3220048256 134878604 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8590/statm): 79252 58834 364 364 0 78888 0
[pid=8590] vsize: 317008
Current children cumulated CPU time (s) 29.89
Current children cumulated vsize (Kb) 317008

[startup+40.0045 s]
Raw data (loadavg): 1.11 1.04 0.98 2/55 8590
Raw data (/proc/8590/stat): 8590 (pb2sat) R 8589 8590 4005 0 -1 0 121375 0 0 0 3721 266 0 0 25 0 1 0 22045452 381419520 76638 4294967295 134512640 135987407 3221224560 3220313168 134887865 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8590/statm): 93120 76638 364 364 0 92756 0
[pid=8590] vsize: 372480
Current children cumulated CPU time (s) 39.87
Current children cumulated vsize (Kb) 372480

[startup+50.0053 s]
Raw data (loadavg): 1.09 1.03 0.98 2/55 8590
Raw data (/proc/8590/stat): 8590 (pb2sat) R 8589 8590 4005 0 -1 0 140612 0 0 0 4674 312 0 0 25 0 1 0 22045452 406155264 95643 4294967295 134512640 135987407 3221224560 3220509680 134537503 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8590/statm): 99159 95643 364 364 0 98795 0
[pid=8590] vsize: 396636
Current children cumulated CPU time (s) 49.86
Current children cumulated vsize (Kb) 396636

[startup+60.0061 s]
Raw data (loadavg): 1.08 1.03 0.98 2/55 8590
Raw data (/proc/8590/stat): 8590 (pb2sat) R 8589 8590 4005 0 -1 0 206642 0 0 0 5531 448 0 0 25 0 1 0 22045452 645574656 117524 4294967295 134512640 135987407 3221224560 3220862284 135499903 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8590/statm): 157611 117524 364 364 0 157247 0
[pid=8590] vsize: 630444
Current children cumulated CPU time (s) 59.79
Current children cumulated vsize (Kb) 630444

[startup+70.0068 s]
Raw data (loadavg): 1.06 1.03 0.98 2/55 8590
Raw data (/proc/8590/stat): 8590 (pb2sat) R 8589 8590 4005 0 -1 0 223153 0 0 0 6490 488 0 0 25 0 1 0 22045452 700485632 133836 4294967295 134512640 135987407 3221224560 3220926916 135478476 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8590/statm): 171017 133836 364 364 0 170653 0
[pid=8590] vsize: 684068
Current children cumulated CPU time (s) 69.78
Current children cumulated vsize (Kb) 684068

[startup+80.0076 s]
Raw data (loadavg): 1.05 1.03 0.98 2/55 8590
Raw data (/proc/8590/stat): 8590 (pb2sat) R 8589 8590 4005 0 -1 0 242143 0 0 0 7441 534 0 0 25 0 1 0 22045452 724951040 152598 4294967295 134512640 135987407 3221224560 3221030956 135480548 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8590/statm): 176990 152598 364 364 0 176626 0
[pid=8590] vsize: 707960
Current children cumulated CPU time (s) 79.75
Current children cumulated vsize (Kb) 707960
open syscall for file /dev/tty
open syscall for file /proc/self/maps
One traced child (pid=8590) ended because it received signal 6 (SIGABRT)
All traced children have exited ! Game is over.

Child ended because it received signal 6 (SIGABRT)
Real time (s): 82.991
CPU time (s): 82.7324
CPU user time (s): 76.9373
CPU system time (s): 5.79512
CPU usage (%): 99.6884
Max. virtual memory (cumulated for all children) (Kb): 707960

Verifier Data

ERROR: no interpretation found !