### uname -a: Linux clpc8.cs.ox.ac.uk 2.6.34.7-56.fc13.x86_64 #1 SMP Wed Sep 15 03:36:55 UTC 2010 x86_64 x86_64 x86_64 GNU/Linux ### cat /proc/cpuinfo: processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 23 model name : Intel(R) Core(TM)2 Quad CPU Q9550 @ 2.83GHz stepping : 10 cpu MHz : 2826.601 cache size : 6144 KB physical id : 0 siblings : 4 core id : 0 cpu cores : 4 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good aperfmperf pni dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 xsave lahf_lm tpr_shadow vnmi flexpriority bogomips : 5653.20 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: processor : 1 vendor_id : GenuineIntel cpu family : 6 model : 23 model name : Intel(R) Core(TM)2 Quad CPU Q9550 @ 2.83GHz stepping : 10 cpu MHz : 2826.601 cache size : 6144 KB physical id : 0 siblings : 4 core id : 1 cpu cores : 4 apicid : 1 initial apicid : 1 fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good aperfmperf pni dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 xsave lahf_lm tpr_shadow vnmi flexpriority bogomips : 5652.19 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: processor : 2 vendor_id : GenuineIntel cpu family : 6 model : 23 model name : Intel(R) Core(TM)2 Quad CPU Q9550 @ 2.83GHz stepping : 10 cpu MHz : 2826.601 cache size : 6144 KB physical id : 0 siblings : 4 core id : 2 cpu cores : 4 apicid : 2 initial apicid : 2 fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good aperfmperf pni dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 xsave lahf_lm tpr_shadow vnmi flexpriority bogomips : 5652.20 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: processor : 3 vendor_id : GenuineIntel cpu family : 6 model : 23 model name : Intel(R) Core(TM)2 Quad CPU Q9550 @ 2.83GHz stepping : 10 cpu MHz : 2826.601 cache size : 6144 KB physical id : 0 siblings : 4 core id : 3 cpu cores : 4 apicid : 3 initial apicid : 3 fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good aperfmperf pni dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 xsave lahf_lm tpr_shadow vnmi flexpriority bogomips : 5652.21 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: ### cat /proc/meminfo: MemTotal: 3891428 kB MemFree: 3554300 kB Buffers: 940 kB Cached: 63704 kB SwapCached: 50860 kB Active: 39456 kB Inactive: 116544 kB Active(anon): 32864 kB Inactive(anon): 100404 kB Active(file): 6592 kB Inactive(file): 16140 kB Unevictable: 0 kB Mlocked: 0 kB SwapTotal: 12586892 kB SwapFree: 10153544 kB Dirty: 96 kB Writeback: 0 kB AnonPages: 54668 kB Mapped: 3900 kB Shmem: 41844 kB Slab: 39088 kB SReclaimable: 21280 kB SUnreclaim: 17808 kB KernelStack: 2088 kB PageTables: 17376 kB NFS_Unstable: 0 kB Bounce: 0 kB WritebackTmp: 0 kB CommitLimit: 14532604 kB Committed_AS: 2871532 kB VmallocTotal: 34359738367 kB VmallocUsed: 385656 kB VmallocChunk: 34359345788 kB HardwareCorrupted: 0 kB HugePages_Total: 0 HugePages_Free: 0 HugePages_Rsvd: 0 HugePages_Surp: 0 Hugepagesize: 2048 kB DirectMap4k: 10236 kB DirectMap2M: 4016128 kB ### date: Fri Oct 14 01:35:20 BST 2011 ### user: mictau ### ulimit -a: core file size (blocks, -c) 0 data seg size (kbytes, -d) unlimited scheduling priority (-e) 0 file size (blocks, -f) unlimited pending signals (-i) 30273 max locked memory (kbytes, -l) 64 max memory size (kbytes, -m) unlimited open files (-n) 1024 pipe size (512 bytes, -p) 8 POSIX message queues (bytes, -q) 819200 real-time priority (-r) 0 stack size (kbytes, -s) 10240 cpu time (seconds, -t) unlimited max user processes (-u) 1024 virtual memory (kbytes, -v) 3584000 file locks (-x) unlimited ### timeout: timeout -s SIGINT 3600 ### tool version info: 4.0 ### tool command: cbmc ### full command line: cbmc /home/scratch/mictau/cprover-benchmarking.git/tmp/cdfpl/build/other/nsv3/eps_line1.0.0.i ### expected verification result: unknown ############################################################################### file /home/scratch/mictau/cprover-benchmarking.git/tmp/cdfpl/build/other/nsv3/eps_line1.0.0.i: Parsing Converting Type-checking eps_line1.0.0 Generating GOTO Program Adding CPROVER library Function Pointer Removal Partial Inlining Generic Property Instrumentation Starting Bounded Model Checking size of program expression: 51 assignments simple slicing removed 1 assignments Generated 1 VCC(s), 1 remaining after simplification Passing problem to propositional reduction Running propositional reduction Solving with MiniSAT2 with simplifier 35685 variables, 146149 clauses SAT checker: negated claim is SATISFIABLE, i.e., does not hold Runtime decision procedure: 0.537s Building error trace Counterexample: State 2 file line 26 thread 0 ---------------------------------------------------- __CPROVER_deallocated=NULL (0000000000000000000000000000000000000000000000000000000000000000) State 3 file line 27 thread 0 ---------------------------------------------------- __CPROVER_malloc_object=NULL (0000000000000000000000000000000000000000000000000000000000000000) State 4 file line 28 thread 0 ---------------------------------------------------- __CPROVER_malloc_size=0 (0000000000000000000000000000000000000000000000000000000000000000) State 5 file line 37 thread 0 ---------------------------------------------------- __CPROVER_rounding_mode=0 (00000000000000000000000000000000) State 8 file other/nsv3/eps_line1.c line 43 function main thread 0 ---------------------------------------------------- sx=8352270921771753315993448145517281280.000000f (01111100110010010001001011011000) State 9 file other/nsv3/eps_line1.c line 43 function main thread 0 ---------------------------------------------------- sy=-0.000000f (10000001001011100100110001101110) State 10 file other/nsv3/eps_line1.c line 43 function main thread 0 ---------------------------------------------------- vx=+NaN (01111111101100011000100011000000) State 11 file other/nsv3/eps_line1.c line 43 function main thread 0 ---------------------------------------------------- vy=590566941130022191104.000000f (01100010000000000000111100001101) State 13 file other/nsv3/eps_line1.c line 33 function eps_line thread 0 ---------------------------------------------------- x=+NaN (01111111100000000000000000000001) State 14 file other/nsv3/eps_line1.c line 33 function eps_line thread 0 ---------------------------------------------------- e1=-75.000000f (11000010100101100000000000000000) State 15 file other/nsv3/eps_line1.c line 33 function eps_line thread 0 ---------------------------------------------------- e2=-15.000000f (11000001011100000000000000000000) State 19 file other/nsv3/eps_line1.c line 16 function sign thread 0 ---------------------------------------------------- s1=0 (00000000000000000000000000000000) State 21 file other/nsv3/eps_line1.c line 34 function eps_line thread 0 ---------------------------------------------------- x=+NaN (01111111100000000000000000000001) State 22 file other/nsv3/eps_line1.c line 34 function eps_line thread 0 ---------------------------------------------------- e1=-75.000000f (11000010100101100000000000000000) State 23 file other/nsv3/eps_line1.c line 34 function eps_line thread 0 ---------------------------------------------------- e2=-15.000000f (11000001011100000000000000000000) State 27 file other/nsv3/eps_line1.c line 16 function sign thread 0 ---------------------------------------------------- s2=0 (00000000000000000000000000000000) State 29 file other/nsv3/eps_line1.c line 36 function eps_line thread 0 ---------------------------------------------------- res=0 (00000000000000000000000000000000) Violated property: file other/nsv3/eps_line1.c line 44 function main assertion res != 0 VERIFICATION FAILED ############################################################################### ### exit code: 10 ### /usr/bin/time -v: Command exited with non-zero status 10 Command being timed: "cbmc /home/scratch/mictau/cprover-benchmarking.git/tmp/cdfpl/build/other/nsv3/eps_line1.0.0.i" User time (seconds): 0.53 System time (seconds): 0.01 Percent of CPU this job got: 96% Elapsed (wall clock) time (h:mm:ss or m:ss): 0:00.56 Average shared text size (kbytes): 0 Average unshared data size (kbytes): 0 Average stack size (kbytes): 0 Average total size (kbytes): 0 Maximum resident set size (kbytes): 26352 Average resident set size (kbytes): 0 Major (requiring I/O) page faults: 1 Minor (reclaiming a frame) page faults: 9338 Voluntary context switches: 5 Involuntary context switches: 3 Swaps: 0 File system inputs: 112 File system outputs: 8 Socket messages sent: 0 Socket messages received: 0 Signals delivered: 0 Page size (bytes): 4096 Exit status: 10