./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0486b5f8-69b9-49bc-86ef-f6d843de6579/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0486b5f8-69b9-49bc-86ef-f6d843de6579/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0486b5f8-69b9-49bc-86ef-f6d843de6579/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0486b5f8-69b9-49bc-86ef-f6d843de6579/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0486b5f8-69b9-49bc-86ef-f6d843de6579/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0486b5f8-69b9-49bc-86ef-f6d843de6579/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 7918e78c7fa8e57a6cd382ed800c3c73f2f498c616ea3e9ed6a8775509cf80ff --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:14:09,238 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:14:09,361 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0486b5f8-69b9-49bc-86ef-f6d843de6579/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 05:14:09,373 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:14:09,373 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:14:09,421 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:14:09,422 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:14:09,423 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:14:09,424 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:14:09,429 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:14:09,429 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:14:09,430 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:14:09,430 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:14:09,432 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:14:09,432 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:14:09,433 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:14:09,433 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:14:09,434 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:14:09,434 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:14:09,435 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:14:09,435 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:14:09,436 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:14:09,437 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:14:09,437 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:14:09,438 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:14:09,438 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:14:09,438 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:14:09,439 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:14:09,439 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:14:09,440 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:14:09,441 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:14:09,441 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:14:09,442 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:14:09,442 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:14:09,442 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:14:09,442 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:14:09,443 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:14:09,443 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:14:09,443 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:14:09,443 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:14:09,444 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:14:09,444 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:14:09,444 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0486b5f8-69b9-49bc-86ef-f6d843de6579/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0486b5f8-69b9-49bc-86ef-f6d843de6579/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7918e78c7fa8e57a6cd382ed800c3c73f2f498c616ea3e9ed6a8775509cf80ff [2023-11-19 05:14:09,757 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:14:09,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:14:09,793 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:14:09,794 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:14:09,796 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:14:09,797 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0486b5f8-69b9-49bc-86ef-f6d843de6579/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i [2023-11-19 05:14:13,005 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:14:13,749 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:14:13,750 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0486b5f8-69b9-49bc-86ef-f6d843de6579/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i [2023-11-19 05:14:13,804 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0486b5f8-69b9-49bc-86ef-f6d843de6579/bin/utaipan-verify-t7M7D8N6sZ/data/7c1b6f161/9e08d6de8481457ba91727e52b396425/FLAG6c1b90640 [2023-11-19 05:14:13,820 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0486b5f8-69b9-49bc-86ef-f6d843de6579/bin/utaipan-verify-t7M7D8N6sZ/data/7c1b6f161/9e08d6de8481457ba91727e52b396425 [2023-11-19 05:14:13,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:14:13,828 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:14:13,831 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:14:13,831 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:14:13,837 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:14:13,838 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:14:13" (1/1) ... [2023-11-19 05:14:13,839 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a8d9394 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:13, skipping insertion in model container [2023-11-19 05:14:13,839 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:14:13" (1/1) ... [2023-11-19 05:14:13,991 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:14:16,368 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0486b5f8-69b9-49bc-86ef-f6d843de6579/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i[325202,325215] [2023-11-19 05:14:16,507 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:14:16,587 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:14:16,738 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [6154] [2023-11-19 05:14:16,740 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [6156] [2023-11-19 05:14:16,741 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [6166] [2023-11-19 05:14:16,742 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("bt %2,%1\n\tsbb %0,%0": "=r" (oldbit): "m" (*((unsigned long *)addr)), "Ir" (nr)); [6174-6175] [2023-11-19 05:14:16,749 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [6351] [2023-11-19 05:14:16,750 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6354] [2023-11-19 05:14:16,750 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6357] [2023-11-19 05:14:16,750 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6360] [2023-11-19 05:14:16,751 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; incl %0": "+m" (v->counter)); [6394] [2023-11-19 05:14:16,752 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; decl %0": "+m" (v->counter)); [6401] [2023-11-19 05:14:16,752 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; decl %0; sete %1": "+m" (v->counter), "=qm" (c): : "memory"); [6409-6410] [2023-11-19 05:14:16,754 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incb %%gs:%0": "+m" (__preempt_count)); [6449] [2023-11-19 05:14:16,754 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decb %%gs:%0": "+m" (__preempt_count)); [6452] [2023-11-19 05:14:16,754 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addb %1, %%gs:%0": "+m" (__preempt_count): "qi" (val)); [6454] [2023-11-19 05:14:16,755 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incw %%gs:%0": "+m" (__preempt_count)); [6459] [2023-11-19 05:14:16,756 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decw %%gs:%0": "+m" (__preempt_count)); [6462] [2023-11-19 05:14:16,756 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addw %1, %%gs:%0": "+m" (__preempt_count): "ri" (val)); [6464] [2023-11-19 05:14:16,757 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incl %%gs:%0": "+m" (__preempt_count)); [6469] [2023-11-19 05:14:16,757 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decl %%gs:%0": "+m" (__preempt_count)); [6472] [2023-11-19 05:14:16,757 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addl %1, %%gs:%0": "+m" (__preempt_count): "ri" (val)); [6474] [2023-11-19 05:14:16,758 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incq %%gs:%0": "+m" (__preempt_count)); [6479] [2023-11-19 05:14:16,758 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decq %%gs:%0": "+m" (__preempt_count)); [6482] [2023-11-19 05:14:16,759 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addq %1, %%gs:%0": "+m" (__preempt_count): "re" (val)); [6484] [2023-11-19 05:14:16,761 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incb %%gs:%0": "+m" (__preempt_count)); [6502] [2023-11-19 05:14:16,761 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decb %%gs:%0": "+m" (__preempt_count)); [6505] [2023-11-19 05:14:16,761 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addb %1, %%gs:%0": "+m" (__preempt_count): "qi" (- val)); [6507] [2023-11-19 05:14:16,762 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incw %%gs:%0": "+m" (__preempt_count)); [6512] [2023-11-19 05:14:16,762 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decw %%gs:%0": "+m" (__preempt_count)); [6515] [2023-11-19 05:14:16,762 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addw %1, %%gs:%0": "+m" (__preempt_count): "ri" (- val)); [6517] [2023-11-19 05:14:16,763 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incl %%gs:%0": "+m" (__preempt_count)); [6522] [2023-11-19 05:14:16,763 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decl %%gs:%0": "+m" (__preempt_count)); [6525] [2023-11-19 05:14:16,763 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addl %1, %%gs:%0": "+m" (__preempt_count): "ri" (- val)); [6527] [2023-11-19 05:14:16,764 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incq %%gs:%0": "+m" (__preempt_count)); [6532] [2023-11-19 05:14:16,765 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decq %%gs:%0": "+m" (__preempt_count)); [6535] [2023-11-19 05:14:16,765 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addq %1, %%gs:%0": "+m" (__preempt_count): "re" (- val)); [6537] [2023-11-19 05:14:16,770 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [6617] [2023-11-19 05:14:16,770 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [6624] [2023-11-19 05:14:16,784 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/linux/skbuff.h"), "i" (1056), "i" (12UL)); [6887-6888] [2023-11-19 05:14:16,801 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/linux/skbuff.h"), "i" (1714), "i" (12UL)); [7054-7055] [2023-11-19 05:14:16,813 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"/home/ldvuser/mutilin/launch/work/current--X--drivers/--X--defaultlinux-4.2-rc1.tar.xz--X--43_2a--X--cpachecker/linux-4.2-rc1.tar.xz/csd_deg_dscv/11985/dscv_tempdir/dscv/ri/43_2a/drivers/net/ppp/ppp_generic.c"), "i" (291), "i" (12UL)); [7404-7405] [2023-11-19 05:14:16,817 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgb %b0, %1\n": "+q" (__ret), "+m" (tmp___1->state): : "memory", "cc"); [7566-7567] [2023-11-19 05:14:16,820 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgw %w0, %1\n": "+r" (__ret), "+m" (tmp___2->state): : "memory", "cc"); [7571-7572] [2023-11-19 05:14:16,820 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgl %0, %1\n": "+r" (__ret), "+m" (tmp___3->state): : "memory", "cc"); [7576-7577] [2023-11-19 05:14:16,820 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgq %q0, %1\n": "+r" (__ret), "+m" (tmp___4->state): : "memory", "cc"); [7581-7582] [2023-11-19 05:14:16,822 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgb %b0, %1\n": "+q" (__ret___0), "+m" (tmp___8->state): : "memory", "cc"); [7628-7629] [2023-11-19 05:14:16,822 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgw %w0, %1\n": "+r" (__ret___0), "+m" (tmp___9->state): : "memory", "cc"); [7633-7634] [2023-11-19 05:14:16,823 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgl %0, %1\n": "+r" (__ret___0), "+m" (tmp___10->state): : "memory", "cc"); [7638-7639] [2023-11-19 05:14:16,823 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgq %q0, %1\n": "+r" (__ret___0), "+m" (tmp___11->state): : "memory", "cc"); [7643-7644] [2023-11-19 05:14:16,843 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __get_user_%P3": "=a" (__ret_gu), "=r" (__val_gu): "0" (p), "i" (4UL)); [7886-7887] [2023-11-19 05:14:16,846 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __get_user_%P3": "=a" (__ret_gu___0), "=r" (__val_gu___0): "0" (p), "i" (4UL)); [7927-7928] [2023-11-19 05:14:16,847 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __get_user_%P3": "=a" (__ret_gu___1), "=r" (__val_gu___1): "0" (p), "i" (4UL)); [7940-7941] [2023-11-19 05:14:16,849 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_1": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [7970] [2023-11-19 05:14:16,850 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_2": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [7973] [2023-11-19 05:14:16,851 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_4": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [7976] [2023-11-19 05:14:16,852 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_8": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [7979] [2023-11-19 05:14:16,852 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_X": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [7982] [2023-11-19 05:14:16,853 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_1": "=a" (__ret_pu___0): "0" (__pu_val___0), "c" (p): "ebx"); [8001-8002] [2023-11-19 05:14:16,853 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_2": "=a" (__ret_pu___0): "0" (__pu_val___0), "c" (p): "ebx"); [8005-8006] [2023-11-19 05:14:16,853 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_4": "=a" (__ret_pu___0): "0" (__pu_val___0), "c" (p): "ebx"); [8009-8010] [2023-11-19 05:14:16,855 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_8": "=a" (__ret_pu___0): "0" (__pu_val___0), "c" (p): "ebx"); [8013-8014] [2023-11-19 05:14:16,855 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_X": "=a" (__ret_pu___0): "0" (__pu_val___0), "c" (p): "ebx"); [8017-8018] [2023-11-19 05:14:16,856 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __get_user_%P3": "=a" (__ret_gu___2), "=r" (__val_gu___2): "0" (p), "i" (4UL)); [8031-8032] [2023-11-19 05:14:16,858 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_1": "=a" (__ret_pu___1): "0" (__pu_val___1), "c" (p): "ebx"); [8047-8048] [2023-11-19 05:14:16,859 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_2": "=a" (__ret_pu___1): "0" (__pu_val___1), "c" (p): "ebx"); [8051-8052] [2023-11-19 05:14:16,859 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_4": "=a" (__ret_pu___1): "0" (__pu_val___1), "c" (p): "ebx"); [8055-8056] [2023-11-19 05:14:16,860 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_8": "=a" (__ret_pu___1): "0" (__pu_val___1), "c" (p): "ebx"); [8059-8060] [2023-11-19 05:14:16,860 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_X": "=a" (__ret_pu___1): "0" (__pu_val___1), "c" (p): "ebx"); [8063-8064] [2023-11-19 05:14:16,862 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __get_user_%P3": "=a" (__ret_gu___3), "=r" (__val_gu___3): "0" (p), "i" (4UL)); [8087-8088] [2023-11-19 05:14:16,867 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __get_user_%P3": "=a" (__ret_gu___4), "=r" (__val_gu___4): "0" (p), "i" (4UL)); [8202-8203] [2023-11-19 05:14:16,870 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __get_user_%P3": "=a" (__ret_gu), "=r" (__val_gu): "0" (p), "i" (4UL)); [8247-8248] [2023-11-19 05:14:16,871 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_1": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [8267] [2023-11-19 05:14:16,937 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_2": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [8270] [2023-11-19 05:14:16,938 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_4": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [8273] [2023-11-19 05:14:16,938 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_8": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [8276] [2023-11-19 05:14:16,938 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_X": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [8279] [2023-11-19 05:14:16,939 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __get_user_%P3": "=a" (__ret_gu___0), "=r" (__val_gu___0): "0" (p), "i" (4UL)); [8292-8293] [2023-11-19 05:14:16,939 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __get_user_%P3": "=a" (__ret_gu___1), "=r" (__val_gu___1): "0" (p), "i" (4UL)); [8314-8315] [2023-11-19 05:14:17,102 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0486b5f8-69b9-49bc-86ef-f6d843de6579/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i[325202,325215] [2023-11-19 05:14:17,116 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:14:17,296 WARN L675 CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:14:17,296 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:14:17,297 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:14:17,305 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:14:17,305 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:17 WrapperNode [2023-11-19 05:14:17,306 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:14:17,307 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:14:17,307 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:14:17,307 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:14:17,316 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:17" (1/1) ... [2023-11-19 05:14:17,447 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:17" (1/1) ... [2023-11-19 05:14:17,685 INFO L138 Inliner]: procedures = 336, calls = 2319, calls flagged for inlining = 156, calls inlined = 154, statements flattened = 6333 [2023-11-19 05:14:17,686 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:14:17,686 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:14:17,687 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:14:17,687 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:14:17,698 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:17" (1/1) ... [2023-11-19 05:14:17,698 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:17" (1/1) ... [2023-11-19 05:14:17,759 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:17" (1/1) ... [2023-11-19 05:14:17,763 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:17" (1/1) ... [2023-11-19 05:14:18,033 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:17" (1/1) ... [2023-11-19 05:14:18,072 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:17" (1/1) ... [2023-11-19 05:14:18,130 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:17" (1/1) ... [2023-11-19 05:14:18,184 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:17" (1/1) ... [2023-11-19 05:14:18,241 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:14:18,243 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:14:18,243 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:14:18,243 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:14:18,244 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:17" (1/1) ... [2023-11-19 05:14:18,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:14:18,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0486b5f8-69b9-49bc-86ef-f6d843de6579/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:14:18,285 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0486b5f8-69b9-49bc-86ef-f6d843de6579/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:14:18,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0486b5f8-69b9-49bc-86ef-f6d843de6579/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:14:18,358 INFO L130 BoogieDeclarations]: Found specification of procedure find_comp_entry [2023-11-19 05:14:18,358 INFO L138 BoogieDeclarations]: Found implementation of procedure find_comp_entry [2023-11-19 05:14:18,358 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2023-11-19 05:14:18,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2023-11-19 05:14:18,358 INFO L130 BoogieDeclarations]: Found specification of procedure skb_dequeue [2023-11-19 05:14:18,358 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_dequeue [2023-11-19 05:14:18,359 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock_bh [2023-11-19 05:14:18,359 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock_bh [2023-11-19 05:14:18,359 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2023-11-19 05:14:18,359 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock_bh [2023-11-19 05:14:18,359 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock_bh [2023-11-19 05:14:18,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 05:14:18,359 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_skb [2023-11-19 05:14:18,360 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_skb [2023-11-19 05:14:18,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 05:14:18,360 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-19 05:14:18,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-19 05:14:18,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-19 05:14:18,360 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-19 05:14:18,361 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2023-11-19 05:14:18,361 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2023-11-19 05:14:18,361 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2023-11-19 05:14:18,361 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2023-11-19 05:14:18,361 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_xmit_process [2023-11-19 05:14:18,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_xmit_process [2023-11-19 05:14:18,361 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_unlink [2023-11-19 05:14:18,362 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_unlink [2023-11-19 05:14:18,362 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_shutdown_interface [2023-11-19 05:14:18,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_shutdown_interface [2023-11-19 05:14:18,362 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_destroy_interface [2023-11-19 05:14:18,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_destroy_interface [2023-11-19 05:14:18,362 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2023-11-19 05:14:18,362 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2023-11-19 05:14:18,362 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2023-11-19 05:14:18,363 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2023-11-19 05:14:18,363 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-11-19 05:14:18,363 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-11-19 05:14:18,363 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-11-19 05:14:18,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-11-19 05:14:18,363 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 05:14:18,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 05:14:18,364 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_lock_bh [2023-11-19 05:14:18,364 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_lock_bh [2023-11-19 05:14:18,364 INFO L130 BoogieDeclarations]: Found specification of procedure bpf_prog_destroy [2023-11-19 05:14:18,364 INFO L138 BoogieDeclarations]: Found implementation of procedure bpf_prog_destroy [2023-11-19 05:14:18,364 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_push [2023-11-19 05:14:18,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_push [2023-11-19 05:14:18,365 INFO L130 BoogieDeclarations]: Found specification of procedure unit_find [2023-11-19 05:14:18,365 INFO L138 BoogieDeclarations]: Found implementation of procedure unit_find [2023-11-19 05:14:18,365 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-19 05:14:18,365 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-19 05:14:18,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-19 05:14:18,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-19 05:14:18,366 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_be16 [2023-11-19 05:14:18,366 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_be16 [2023-11-19 05:14:18,366 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2023-11-19 05:14:18,366 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2023-11-19 05:14:18,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 05:14:18,367 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 05:14:18,368 INFO L130 BoogieDeclarations]: Found specification of procedure init_ppp_file [2023-11-19 05:14:18,368 INFO L138 BoogieDeclarations]: Found implementation of procedure init_ppp_file [2023-11-19 05:14:18,368 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 05:14:18,368 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 05:14:18,368 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-19 05:14:18,369 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-19 05:14:18,369 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2023-11-19 05:14:18,369 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2023-11-19 05:14:18,369 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-19 05:14:18,370 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-19 05:14:18,370 INFO L130 BoogieDeclarations]: Found specification of procedure skb_peek [2023-11-19 05:14:18,373 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_peek [2023-11-19 05:14:18,374 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_release [2023-11-19 05:14:18,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_release [2023-11-19 05:14:18,374 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2023-11-19 05:14:18,375 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2023-11-19 05:14:18,375 INFO L130 BoogieDeclarations]: Found specification of procedure get_filter [2023-11-19 05:14:18,376 INFO L138 BoogieDeclarations]: Found implementation of procedure get_filter [2023-11-19 05:14:18,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:14:18,376 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-19 05:14:18,382 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-19 05:14:18,383 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-19 05:14:18,383 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2023-11-19 05:14:18,383 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2023-11-19 05:14:18,383 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2023-11-19 05:14:18,383 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2023-11-19 05:14:18,383 INFO L130 BoogieDeclarations]: Found specification of procedure bpf_prog_create [2023-11-19 05:14:18,383 INFO L138 BoogieDeclarations]: Found implementation of procedure bpf_prog_create [2023-11-19 05:14:18,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:14:18,385 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_get_stats64 [2023-11-19 05:14:18,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_get_stats64 [2023-11-19 05:14:18,385 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2023-11-19 05:14:18,385 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2023-11-19 05:14:18,385 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2023-11-19 05:14:18,386 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2023-11-19 05:14:18,386 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_send_frame [2023-11-19 05:14:18,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_send_frame [2023-11-19 05:14:18,386 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2023-11-19 05:14:18,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2023-11-19 05:14:18,387 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-19 05:14:18,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-19 05:14:18,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:14:18,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 05:14:18,387 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_receive_error [2023-11-19 05:14:18,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_receive_error [2023-11-19 05:14:18,387 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_find_unit [2023-11-19 05:14:18,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_find_unit [2023-11-19 05:14:18,388 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 05:14:18,388 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 05:14:18,388 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2023-11-19 05:14:18,388 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2023-11-19 05:14:18,388 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2023-11-19 05:14:18,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2023-11-19 05:14:18,389 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-11-19 05:14:18,389 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-11-19 05:14:18,389 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-19 05:14:18,389 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-19 05:14:18,389 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2023-11-19 05:14:18,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2023-11-19 05:14:18,390 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_channel_push [2023-11-19 05:14:18,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_channel_push [2023-11-19 05:14:18,390 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-19 05:14:18,390 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-19 05:14:18,390 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-19 05:14:18,390 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-19 05:14:18,390 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-19 05:14:18,391 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-19 05:14:18,391 INFO L130 BoogieDeclarations]: Found specification of procedure find_compressor [2023-11-19 05:14:18,391 INFO L138 BoogieDeclarations]: Found implementation of procedure find_compressor [2023-11-19 05:14:18,391 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_pernet [2023-11-19 05:14:18,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_pernet [2023-11-19 05:14:18,391 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-19 05:14:18,391 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-19 05:14:18,391 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2023-11-19 05:14:18,392 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2023-11-19 05:14:18,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 05:14:18,392 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_pernet_device [2023-11-19 05:14:18,392 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_pernet_device [2023-11-19 05:14:18,392 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-19 05:14:18,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-19 05:14:18,392 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_disconnect_channel [2023-11-19 05:14:18,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_disconnect_channel [2023-11-19 05:14:18,393 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_net_ioctl [2023-11-19 05:14:18,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_net_ioctl [2023-11-19 05:14:18,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 05:14:18,393 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_unlock_bh [2023-11-19 05:14:18,393 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_unlock_bh [2023-11-19 05:14:18,393 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2023-11-19 05:14:18,393 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2023-11-19 05:14:18,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:14:18,394 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-11-19 05:14:18,394 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-11-19 05:14:18,394 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2023-11-19 05:14:18,394 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2023-11-19 05:14:18,394 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_output_wakeup [2023-11-19 05:14:18,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_output_wakeup [2023-11-19 05:14:18,394 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_exit_net [2023-11-19 05:14:18,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_exit_net [2023-11-19 05:14:18,395 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_free [2023-11-19 05:14:18,395 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_free [2023-11-19 05:14:18,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-19 05:14:18,395 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-19 05:14:18,395 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2023-11-19 05:14:18,395 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2023-11-19 05:14:18,396 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_do_recv [2023-11-19 05:14:18,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_do_recv [2023-11-19 05:14:18,396 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_unregister_channel [2023-11-19 05:14:18,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_unregister_channel [2023-11-19 05:14:18,396 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be16 [2023-11-19 05:14:18,396 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be16 [2023-11-19 05:14:18,396 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2023-11-19 05:14:18,397 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2023-11-19 05:14:18,397 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-11-19 05:14:18,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-11-19 05:14:18,397 INFO L130 BoogieDeclarations]: Found specification of procedure proto_to_npindex [2023-11-19 05:14:18,397 INFO L138 BoogieDeclarations]: Found implementation of procedure proto_to_npindex [2023-11-19 05:14:18,397 INFO L130 BoogieDeclarations]: Found specification of procedure net_generic [2023-11-19 05:14:18,397 INFO L138 BoogieDeclarations]: Found implementation of procedure net_generic [2023-11-19 05:14:18,397 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_39 [2023-11-19 05:14:18,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_39 [2023-11-19 05:14:18,398 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-19 05:14:18,398 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-19 05:14:18,398 INFO L130 BoogieDeclarations]: Found specification of procedure unit_put [2023-11-19 05:14:18,398 INFO L138 BoogieDeclarations]: Found implementation of procedure unit_put [2023-11-19 05:14:18,398 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_receive_nonmp_frame [2023-11-19 05:14:18,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_receive_nonmp_frame [2023-11-19 05:14:18,398 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_purge [2023-11-19 05:14:18,398 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_purge [2023-11-19 05:14:18,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:14:18,399 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2023-11-19 05:14:18,399 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2023-11-19 05:14:18,399 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2023-11-19 05:14:18,399 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2023-11-19 05:14:18,399 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2023-11-19 05:14:18,399 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2023-11-19 05:14:18,399 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_write [2023-11-19 05:14:18,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_write [2023-11-19 05:14:18,401 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2023-11-19 05:14:18,403 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2023-11-19 05:14:18,405 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-19 05:14:18,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-19 05:14:18,406 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2023-11-19 05:14:18,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2023-11-19 05:14:18,406 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-19 05:14:18,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-19 05:14:18,406 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_ccp_closed [2023-11-19 05:14:18,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_ccp_closed [2023-11-19 05:14:18,407 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_open [2023-11-19 05:14:18,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_open [2023-11-19 05:14:18,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:14:18,408 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-19 05:14:18,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-19 05:14:18,408 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2023-11-19 05:14:18,408 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2023-11-19 05:14:18,408 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2023-11-19 05:14:18,408 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2023-11-19 05:14:18,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:14:18,409 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2023-11-19 05:14:18,409 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2023-11-19 05:14:18,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:14:18,409 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2023-11-19 05:14:18,410 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2023-11-19 05:14:18,410 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-19 05:14:18,411 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~$Pointer$ [2023-11-19 05:14:18,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~$Pointer$ [2023-11-19 05:14:18,412 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-19 05:14:18,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-19 05:14:18,413 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2023-11-19 05:14:18,413 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2023-11-19 05:14:18,413 INFO L130 BoogieDeclarations]: Found specification of procedure idr_alloc [2023-11-19 05:14:18,413 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_alloc [2023-11-19 05:14:18,414 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_printk [2023-11-19 05:14:18,415 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_printk [2023-11-19 05:14:18,415 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2023-11-19 05:14:18,415 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2023-11-19 05:14:18,415 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-11-19 05:14:18,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-11-19 05:14:18,420 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2023-11-19 05:14:18,420 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2023-11-19 05:14:18,420 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_long_read [2023-11-19 05:14:18,420 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_long_read [2023-11-19 05:14:18,420 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2023-11-19 05:14:18,421 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2023-11-19 05:14:18,421 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2023-11-19 05:14:18,421 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2023-11-19 05:14:18,421 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2023-11-19 05:14:18,421 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2023-11-19 05:14:18,421 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_register_net_channel [2023-11-19 05:14:18,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_register_net_channel [2023-11-19 05:14:18,421 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-19 05:14:18,422 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-19 05:14:18,422 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_mp_explode [2023-11-19 05:14:18,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_mp_explode [2023-11-19 05:14:18,422 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_may_pull [2023-11-19 05:14:18,422 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_may_pull [2023-11-19 05:14:18,422 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-19 05:14:18,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-19 05:14:18,422 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_ioctl [2023-11-19 05:14:18,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_ioctl [2023-11-19 05:14:18,423 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_ccp_peek [2023-11-19 05:14:18,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_ccp_peek [2023-11-19 05:14:18,423 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_poll [2023-11-19 05:14:18,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_poll [2023-11-19 05:14:18,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:14:18,423 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_destroy_channel [2023-11-19 05:14:18,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_destroy_channel [2023-11-19 05:14:18,424 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2023-11-19 05:14:18,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2023-11-19 05:14:18,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:14:18,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:14:18,424 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2023-11-19 05:14:18,424 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2023-11-19 05:14:18,424 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-19 05:14:18,424 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-19 05:14:19,364 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:14:19,369 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:14:19,942 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-19 05:14:24,809 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:14:28,612 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:14:28,612 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 05:14:28,633 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:14:28 BoogieIcfgContainer [2023-11-19 05:14:28,633 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:14:28,636 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:14:28,637 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:14:28,640 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:14:28,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:14:13" (1/3) ... [2023-11-19 05:14:28,641 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fcf5b9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:14:28, skipping insertion in model container [2023-11-19 05:14:28,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:17" (2/3) ... [2023-11-19 05:14:28,643 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fcf5b9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:14:28, skipping insertion in model container [2023-11-19 05:14:28,643 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:14:28" (3/3) ... [2023-11-19 05:14:28,645 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i [2023-11-19 05:14:28,666 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:14:28,666 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:14:28,769 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:14:28,777 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@456d303, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:14:28,777 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:14:28,792 INFO L276 IsEmpty]: Start isEmpty. Operand has 1687 states, 1014 states have (on average 1.3530571992110454) internal successors, (1372), 1083 states have internal predecessors, (1372), 545 states have call successors, (545), 127 states have call predecessors, (545), 126 states have return successors, (540), 520 states have call predecessors, (540), 540 states have call successors, (540) [2023-11-19 05:14:28,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-11-19 05:14:28,819 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:28,820 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:14:28,820 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:14:28,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:28,825 INFO L85 PathProgramCache]: Analyzing trace with hash -403255955, now seen corresponding path program 1 times [2023-11-19 05:14:28,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:14:28,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584518246] [2023-11-19 05:14:28,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:28,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:14:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:29,854 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2023-11-19 05:14:29,854 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:14:29,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584518246] [2023-11-19 05:14:29,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584518246] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:14:29,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:14:29,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:14:29,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687324880] [2023-11-19 05:14:29,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:14:29,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:14:29,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:14:29,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:14:29,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:14:29,909 INFO L87 Difference]: Start difference. First operand has 1687 states, 1014 states have (on average 1.3530571992110454) internal successors, (1372), 1083 states have internal predecessors, (1372), 545 states have call successors, (545), 127 states have call predecessors, (545), 126 states have return successors, (540), 520 states have call predecessors, (540), 540 states have call successors, (540) Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 05:14:32,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:14:33,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:14:35,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:14:38,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:38,399 INFO L93 Difference]: Finished difference Result 4485 states and 6592 transitions. [2023-11-19 05:14:38,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:14:38,406 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 177 [2023-11-19 05:14:38,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:38,454 INFO L225 Difference]: With dead ends: 4485 [2023-11-19 05:14:38,454 INFO L226 Difference]: Without dead ends: 2786 [2023-11-19 05:14:38,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:14:38,476 INFO L413 NwaCegarLoop]: 2486 mSDtfsCounter, 1665 mSDsluCounter, 2102 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1665 SdHoareTripleChecker+Valid, 4588 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:38,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1665 Valid, 4588 Invalid, 620 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 614 Invalid, 2 Unknown, 0 Unchecked, 8.1s Time] [2023-11-19 05:14:38,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2023-11-19 05:14:38,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 2783. [2023-11-19 05:14:38,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2783 states, 1675 states have (on average 1.3408955223880596) internal successors, (2246), 1786 states have internal predecessors, (2246), 873 states have call successors, (873), 235 states have call predecessors, (873), 234 states have return successors, (872), 834 states have call predecessors, (872), 872 states have call successors, (872) [2023-11-19 05:14:38,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2783 states to 2783 states and 3991 transitions. [2023-11-19 05:14:38,760 INFO L78 Accepts]: Start accepts. Automaton has 2783 states and 3991 transitions. Word has length 177 [2023-11-19 05:14:38,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:38,761 INFO L495 AbstractCegarLoop]: Abstraction has 2783 states and 3991 transitions. [2023-11-19 05:14:38,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 05:14:38,762 INFO L276 IsEmpty]: Start isEmpty. Operand 2783 states and 3991 transitions. [2023-11-19 05:14:38,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-19 05:14:38,769 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:38,769 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:14:38,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:14:38,770 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:14:38,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:38,771 INFO L85 PathProgramCache]: Analyzing trace with hash 540189823, now seen corresponding path program 1 times [2023-11-19 05:14:38,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:14:38,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064346221] [2023-11-19 05:14:38,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:38,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:14:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:39,272 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2023-11-19 05:14:39,273 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:14:39,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064346221] [2023-11-19 05:14:39,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064346221] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:14:39,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:14:39,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:14:39,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340475871] [2023-11-19 05:14:39,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:14:39,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:14:39,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:14:39,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:14:39,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:14:39,281 INFO L87 Difference]: Start difference. First operand 2783 states and 3991 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-19 05:14:42,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:14:45,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:45,126 INFO L93 Difference]: Finished difference Result 8086 states and 11657 transitions. [2023-11-19 05:14:45,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:14:45,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 190 [2023-11-19 05:14:45,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:45,174 INFO L225 Difference]: With dead ends: 8086 [2023-11-19 05:14:45,174 INFO L226 Difference]: Without dead ends: 5338 [2023-11-19 05:14:45,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:14:45,189 INFO L413 NwaCegarLoop]: 2532 mSDtfsCounter, 2288 mSDsluCounter, 2066 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2288 SdHoareTripleChecker+Valid, 4598 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:45,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2288 Valid, 4598 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 619 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2023-11-19 05:14:45,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5338 states. [2023-11-19 05:14:45,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5338 to 5303. [2023-11-19 05:14:45,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5303 states, 3185 states have (on average 1.3409733124018839) internal successors, (4271), 3410 states have internal predecessors, (4271), 1661 states have call successors, (1661), 457 states have call predecessors, (1661), 456 states have return successors, (1743), 1579 states have call predecessors, (1743), 1660 states have call successors, (1743) [2023-11-19 05:14:45,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5303 states to 5303 states and 7675 transitions. [2023-11-19 05:14:45,523 INFO L78 Accepts]: Start accepts. Automaton has 5303 states and 7675 transitions. Word has length 190 [2023-11-19 05:14:45,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:45,524 INFO L495 AbstractCegarLoop]: Abstraction has 5303 states and 7675 transitions. [2023-11-19 05:14:45,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-19 05:14:45,525 INFO L276 IsEmpty]: Start isEmpty. Operand 5303 states and 7675 transitions. [2023-11-19 05:14:45,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2023-11-19 05:14:45,532 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:45,532 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 7, 7, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:14:45,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:14:45,532 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:14:45,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:45,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1620862723, now seen corresponding path program 1 times [2023-11-19 05:14:45,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:14:45,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641230172] [2023-11-19 05:14:45,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:45,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:14:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:46,035 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 599 trivial. 0 not checked. [2023-11-19 05:14:46,036 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:14:46,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641230172] [2023-11-19 05:14:46,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641230172] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:14:46,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:14:46,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:14:46,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681816135] [2023-11-19 05:14:46,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:14:46,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:14:46,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:14:46,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:14:46,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:14:46,039 INFO L87 Difference]: Start difference. First operand 5303 states and 7675 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-19 05:14:49,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:14:49,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:49,813 INFO L93 Difference]: Finished difference Result 10568 states and 15297 transitions. [2023-11-19 05:14:49,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:14:49,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 225 [2023-11-19 05:14:49,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:49,869 INFO L225 Difference]: With dead ends: 10568 [2023-11-19 05:14:49,869 INFO L226 Difference]: Without dead ends: 5303 [2023-11-19 05:14:49,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:14:49,904 INFO L413 NwaCegarLoop]: 2137 mSDtfsCounter, 2409 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2409 SdHoareTripleChecker+Valid, 2137 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:49,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2409 Valid, 2137 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 275 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2023-11-19 05:14:49,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5303 states. [2023-11-19 05:14:50,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5303 to 5303. [2023-11-19 05:14:50,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5303 states, 3185 states have (on average 1.3397174254317112) internal successors, (4267), 3410 states have internal predecessors, (4267), 1661 states have call successors, (1661), 457 states have call predecessors, (1661), 456 states have return successors, (1743), 1579 states have call predecessors, (1743), 1660 states have call successors, (1743) [2023-11-19 05:14:50,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5303 states to 5303 states and 7671 transitions. [2023-11-19 05:14:50,570 INFO L78 Accepts]: Start accepts. Automaton has 5303 states and 7671 transitions. Word has length 225 [2023-11-19 05:14:50,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:50,571 INFO L495 AbstractCegarLoop]: Abstraction has 5303 states and 7671 transitions. [2023-11-19 05:14:50,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-19 05:14:50,572 INFO L276 IsEmpty]: Start isEmpty. Operand 5303 states and 7671 transitions. [2023-11-19 05:14:50,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2023-11-19 05:14:50,577 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:50,577 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 7, 7, 7, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:14:50,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:14:50,578 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:14:50,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:50,579 INFO L85 PathProgramCache]: Analyzing trace with hash -44390563, now seen corresponding path program 1 times [2023-11-19 05:14:50,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:14:50,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120280285] [2023-11-19 05:14:50,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:50,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:14:50,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:52,026 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2023-11-19 05:14:52,026 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:14:52,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120280285] [2023-11-19 05:14:52,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120280285] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:14:52,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:14:52,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:14:52,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831975343] [2023-11-19 05:14:52,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:14:52,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:14:52,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:14:52,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:14:52,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:14:52,031 INFO L87 Difference]: Start difference. First operand 5303 states and 7671 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-19 05:14:56,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:14:58,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:58,175 INFO L93 Difference]: Finished difference Result 8070 states and 11633 transitions. [2023-11-19 05:14:58,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:14:58,176 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 237 [2023-11-19 05:14:58,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:58,251 INFO L225 Difference]: With dead ends: 8070 [2023-11-19 05:14:58,251 INFO L226 Difference]: Without dead ends: 8067 [2023-11-19 05:14:58,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:14:58,260 INFO L413 NwaCegarLoop]: 2783 mSDtfsCounter, 2090 mSDsluCounter, 3831 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2090 SdHoareTripleChecker+Valid, 6614 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:58,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2090 Valid, 6614 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-11-19 05:14:58,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8067 states.