./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--xen-netfront.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_c23790d8-3890-4953-8049-9031e5dbe86c/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23790d8-3890-4953-8049-9031e5dbe86c/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23790d8-3890-4953-8049-9031e5dbe86c/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23790d8-3890-4953-8049-9031e5dbe86c/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23790d8-3890-4953-8049-9031e5dbe86c/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23790d8-3890-4953-8049-9031e5dbe86c/bin/utaipan-verify-NcY6lQBIFX --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 c92cf9b42919bd0ad39ed67eff3f7cfedcded9ddd3bd80f0a39950ee91c5e90b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:15:00,129 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:15:00,229 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23790d8-3890-4953-8049-9031e5dbe86c/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-12 00:15:00,233 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:15:00,234 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:15:00,274 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:15:00,274 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:15:00,275 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:15:00,276 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:15:00,276 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:15:00,277 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:15:00,277 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:15:00,278 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:15:00,278 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:15:00,279 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:15:00,279 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:15:00,280 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:15:00,280 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:15:00,281 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:15:00,297 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:15:00,298 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:15:00,299 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:15:00,299 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:15:00,300 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:15:00,300 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:15:00,301 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:15:00,301 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:15:00,301 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:15:00,302 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:15:00,302 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:15:00,302 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:15:00,303 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:15:00,303 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:15:00,303 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:15:00,303 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:15:00,304 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:15:00,304 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:15:00,304 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:15:00,304 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:15:00,304 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:15:00,305 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:15:00,305 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:15:00,305 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_c23790d8-3890-4953-8049-9031e5dbe86c/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23790d8-3890-4953-8049-9031e5dbe86c/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c92cf9b42919bd0ad39ed67eff3f7cfedcded9ddd3bd80f0a39950ee91c5e90b [2023-11-12 00:15:00,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:15:00,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:15:00,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:15:00,626 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:15:00,627 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:15:00,628 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23790d8-3890-4953-8049-9031e5dbe86c/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i [2023-11-12 00:15:03,794 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:15:04,425 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:15:04,427 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23790d8-3890-4953-8049-9031e5dbe86c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i [2023-11-12 00:15:04,474 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23790d8-3890-4953-8049-9031e5dbe86c/bin/utaipan-verify-NcY6lQBIFX/data/44a83091d/79f9e250e5b6452bb26a4477edf4d7b1/FLAG105035c8e [2023-11-12 00:15:04,524 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23790d8-3890-4953-8049-9031e5dbe86c/bin/utaipan-verify-NcY6lQBIFX/data/44a83091d/79f9e250e5b6452bb26a4477edf4d7b1 [2023-11-12 00:15:04,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:15:04,532 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:15:04,536 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:15:04,536 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:15:04,542 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:15:04,543 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:15:04" (1/1) ... [2023-11-12 00:15:04,544 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d7ee4e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:04, skipping insertion in model container [2023-11-12 00:15:04,544 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:15:04" (1/1) ... [2023-11-12 00:15:04,707 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:15:05,574 WARN L635 FunctionHandler]: implicit declaration of function ldv_undef_int [2023-11-12 00:15:05,576 WARN L635 FunctionHandler]: implicit declaration of function ldv_assume [2023-11-12 00:15:07,228 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_c23790d8-3890-4953-8049-9031e5dbe86c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i[319906,319919] [2023-11-12 00:15:07,301 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:15:07,352 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:15:07,591 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"); [6278] [2023-11-12 00:15:07,592 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; btr %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr)); [6285] [2023-11-12 00:15:07,593 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 %2, %0; setc %1": "+m" (*addr), "=qm" (c): "Ir" (nr): "memory"); [6293-6294] [2023-11-12 00:15:07,595 WARN L635 FunctionHandler]: implicit declaration of function ldv_undef_int [2023-11-12 00:15:07,596 WARN L635 FunctionHandler]: implicit declaration of function ldv_assume [2023-11-12 00:15:07,601 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)); [6519] [2023-11-12 00:15:07,612 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/mm.h"), "i" (543), "i" (12UL)); [6705-6706] [2023-11-12 00:15:07,636 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/netdevice.h"), "i" (507), "i" (12UL)); [7074-7075] [2023-11-12 00:15:07,636 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [7080] [2023-11-12 00:15:07,682 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/12156/dscv_tempdir/dscv/ri/43_2a/drivers/net/xen-netfront.c"), "i" (303), "i" (12UL)); [7567-7568] [2023-11-12 00:15:07,683 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/12156/dscv_tempdir/dscv/ri/43_2a/drivers/net/xen-netfront.c"), "i" (307), "i" (12UL)); [7578-7579] [2023-11-12 00:15:07,686 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7607] [2023-11-12 00:15:07,687 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7610] [2023-11-12 00:15:07,687 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [7612] [2023-11-12 00:15:07,699 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/12156/dscv_tempdir/dscv/ri/43_2a/drivers/net/xen-netfront.c"), "i" (369), "i" (12UL)); [7683-7684] [2023-11-12 00:15:07,700 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("lfence": : : "memory"); [7691] [2023-11-12 00:15:07,702 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/12156/dscv_tempdir/dscv/ri/43_2a/drivers/net/xen-netfront.c"), "i" (388), "i" (12UL)); [7707-7708] [2023-11-12 00:15:07,705 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [7729] [2023-11-12 00:15:07,707 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/12156/dscv_tempdir/dscv/ri/43_2a/drivers/net/xen-netfront.c"), "i" (431), "i" (12UL)); [7765-7766] [2023-11-12 00:15:07,714 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("add %%gs:%1, %0": "=r" (tcp_ptr__): "m" (this_cpu_off), "0" (np->tx_stats)); [7916] [2023-11-12 00:15:07,725 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [8051] [2023-11-12 00:15:07,726 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [8053] [2023-11-12 00:15:07,731 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/12156/dscv_tempdir/dscv/ri/43_2a/drivers/net/xen-netfront.c"), "i" (659), "i" (12UL)); [8116-8117] [2023-11-12 00:15:07,740 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/12156/dscv_tempdir/dscv/ri/43_2a/drivers/net/xen-netfront.c"), "i" (756), "i" (12UL)); [8256-8257] [2023-11-12 00:15:07,746 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/12156/dscv_tempdir/dscv/ri/43_2a/drivers/net/xen-netfront.c"), "i" (836), "i" (12UL)); [8373-8374] [2023-11-12 00:15:07,747 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/12156/dscv_tempdir/dscv/ri/43_2a/drivers/net/xen-netfront.c"), "i" (839), "i" (12UL)); [8385-8386] [2023-11-12 00:15:07,752 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("add %%gs:%1, %0": "=r" (tcp_ptr__): "m" (this_cpu_off), "0" ((queue->info)->rx_stats)); [8448] [2023-11-12 00:15:07,766 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("lfence": : : "memory"); [8520] [2023-11-12 00:15:07,773 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [8602] [2023-11-12 00:15:07,775 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("": "=r" (__ptr): "0" (np->rx_stats)); [8656] [2023-11-12 00:15:07,776 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("": "=r" (__ptr___0): "0" (np->tx_stats)); [8659] [2023-11-12 00:15:07,796 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("": "=r" (__ptr): "0" (pcpu_stats)); [8981] [2023-11-12 00:15:07,797 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("": "=r" (__ptr___0): "0" (pcpu_stats___0)); [9005] [2023-11-12 00:15:07,969 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_c23790d8-3890-4953-8049-9031e5dbe86c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i[319906,319919] [2023-11-12 00:15:07,982 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:15:08,197 WARN L672 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:15:08,197 WARN L672 CHandler]: The function ldv_assume is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:15:08,206 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:15:08,207 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:08 WrapperNode [2023-11-12 00:15:08,207 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:15:08,209 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:15:08,209 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:15:08,209 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:15:08,217 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:08" (1/1) ... [2023-11-12 00:15:08,351 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:08" (1/1) ... [2023-11-12 00:15:08,582 INFO L138 Inliner]: procedures = 337, calls = 1940, calls flagged for inlining = 167, calls inlined = 140, statements flattened = 4841 [2023-11-12 00:15:08,583 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:15:08,584 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:15:08,585 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:15:08,585 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:15:08,595 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:08" (1/1) ... [2023-11-12 00:15:08,595 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:08" (1/1) ... [2023-11-12 00:15:08,616 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:08" (1/1) ... [2023-11-12 00:15:08,617 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:08" (1/1) ... [2023-11-12 00:15:08,736 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:08" (1/1) ... [2023-11-12 00:15:08,768 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:08" (1/1) ... [2023-11-12 00:15:08,790 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:08" (1/1) ... [2023-11-12 00:15:08,807 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:08" (1/1) ... [2023-11-12 00:15:08,851 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:15:08,852 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:15:08,853 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:15:08,854 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:15:08,855 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:08" (1/1) ... [2023-11-12 00:15:08,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:15:08,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23790d8-3890-4953-8049-9031e5dbe86c/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:15:08,899 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23790d8-3890-4953-8049-9031e5dbe86c/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:15:08,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23790d8-3890-4953-8049-9031e5dbe86c/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:15:08,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-12 00:15:08,945 INFO L130 BoogieDeclarations]: Found specification of procedure get_page [2023-11-12 00:15:08,945 INFO L138 BoogieDeclarations]: Found implementation of procedure get_page [2023-11-12 00:15:08,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-12 00:15:08,946 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-12 00:15:08,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-12 00:15:08,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-12 00:15:08,946 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-12 00:15:08,946 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2023-11-12 00:15:08,946 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2023-11-12 00:15:08,947 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_change_mtu [2023-11-12 00:15:08,947 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_change_mtu [2023-11-12 00:15:08,947 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2023-11-12 00:15:08,947 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2023-11-12 00:15:08,947 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_write [2023-11-12 00:15:08,947 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_write [2023-11-12 00:15:08,948 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2023-11-12 00:15:08,948 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2023-11-12 00:15:08,948 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-11-12 00:15:08,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-11-12 00:15:08,948 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-12 00:15:08,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-12 00:15:08,948 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2023-11-12 00:15:08,949 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2023-11-12 00:15:08,949 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_scanf [2023-11-12 00:15:08,949 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_scanf [2023-11-12 00:15:08,950 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_retry_irq [2023-11-12 00:15:08,950 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_retry_irq [2023-11-12 00:15:08,951 INFO L130 BoogieDeclarations]: Found specification of procedure bind_evtchn_to_irqhandler [2023-11-12 00:15:08,951 INFO L138 BoogieDeclarations]: Found implementation of procedure bind_evtchn_to_irqhandler [2023-11-12 00:15:08,951 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_transaction_end [2023-11-12 00:15:08,952 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_transaction_end [2023-11-12 00:15:08,952 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_remove [2023-11-12 00:15:08,952 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_remove [2023-11-12 00:15:08,952 INFO L130 BoogieDeclarations]: Found specification of procedure __alloc_percpu [2023-11-12 00:15:08,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __alloc_percpu [2023-11-12 00:15:08,952 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-12 00:15:08,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-12 00:15:08,953 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_make_txreqs [2023-11-12 00:15:08,953 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_make_txreqs [2023-11-12 00:15:08,953 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_destroy_queues [2023-11-12 00:15:08,953 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_destroy_queues [2023-11-12 00:15:08,953 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2023-11-12 00:15:08,953 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2023-11-12 00:15:08,954 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2023-11-12 00:15:08,954 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2023-11-12 00:15:08,954 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_grant_ring [2023-11-12 00:15:08,954 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_grant_ring [2023-11-12 00:15:08,954 INFO L130 BoogieDeclarations]: Found specification of procedure free_percpu [2023-11-12 00:15:08,954 INFO L138 BoogieDeclarations]: Found implementation of procedure free_percpu [2023-11-12 00:15:08,954 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2023-11-12 00:15:08,955 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2023-11-12 00:15:08,955 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_claim_grant_reference [2023-11-12 00:15:08,956 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_claim_grant_reference [2023-11-12 00:15:08,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-12 00:15:08,957 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-12 00:15:08,957 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:15:08,957 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:15:08,957 INFO L130 BoogieDeclarations]: Found specification of procedure netif_set_real_num_tx_queues [2023-11-12 00:15:08,958 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_set_real_num_tx_queues [2023-11-12 00:15:08,958 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_end_foreign_access [2023-11-12 00:15:08,958 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_end_foreign_access [2023-11-12 00:15:08,958 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_disconnect_backend [2023-11-12 00:15:08,958 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_disconnect_backend [2023-11-12 00:15:08,958 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_get_stats64 [2023-11-12 00:15:08,959 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_get_stats64 [2023-11-12 00:15:08,959 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-12 00:15:08,959 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-12 00:15:08,959 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_alloc_evtchn [2023-11-12 00:15:08,959 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_alloc_evtchn [2023-11-12 00:15:08,959 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2023-11-12 00:15:08,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2023-11-12 00:15:08,960 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_alloc_grant_references [2023-11-12 00:15:08,960 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_alloc_grant_references [2023-11-12 00:15:08,960 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2023-11-12 00:15:08,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2023-11-12 00:15:08,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:15:08,961 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_printf [2023-11-12 00:15:08,961 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_printf [2023-11-12 00:15:08,961 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-12 00:15:08,961 INFO L130 BoogieDeclarations]: Found specification of procedure netfront_tx_slot_available [2023-11-12 00:15:08,962 INFO L138 BoogieDeclarations]: Found implementation of procedure netfront_tx_slot_available [2023-11-12 00:15:08,962 INFO L130 BoogieDeclarations]: Found specification of procedure notify_remote_via_irq [2023-11-12 00:15:08,963 INFO L138 BoogieDeclarations]: Found implementation of procedure notify_remote_via_irq [2023-11-12 00:15:08,963 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_release_grant_reference [2023-11-12 00:15:08,963 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_release_grant_reference [2023-11-12 00:15:08,963 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2023-11-12 00:15:08,963 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2023-11-12 00:15:08,963 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2023-11-12 00:15:08,964 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2023-11-12 00:15:08,964 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_can_sg [2023-11-12 00:15:08,964 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_can_sg [2023-11-12 00:15:08,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:15:08,964 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2023-11-12 00:15:08,964 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2023-11-12 00:15:08,964 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2023-11-12 00:15:08,965 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2023-11-12 00:15:08,965 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2023-11-12 00:15:08,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2023-11-12 00:15:08,966 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_rxidx [2023-11-12 00:15:08,966 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_rxidx [2023-11-12 00:15:08,967 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-12 00:15:08,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-12 00:15:08,967 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-12 00:15:08,967 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-12 00:15:08,968 INFO L130 BoogieDeclarations]: Found specification of procedure __pskb_pull_tail [2023-11-12 00:15:08,968 INFO L138 BoogieDeclarations]: Found implementation of procedure __pskb_pull_tail [2023-11-12 00:15:08,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:15:08,968 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2023-11-12 00:15:08,969 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2023-11-12 00:15:08,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 00:15:08,970 INFO L130 BoogieDeclarations]: Found specification of procedure write_queue_xenstore_keys [2023-11-12 00:15:08,970 INFO L138 BoogieDeclarations]: Found implementation of procedure write_queue_xenstore_keys [2023-11-12 00:15:08,973 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-12 00:15:08,974 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-12 00:15:08,974 INFO L130 BoogieDeclarations]: Found specification of procedure pfn_to_mfn [2023-11-12 00:15:08,974 INFO L138 BoogieDeclarations]: Found implementation of procedure pfn_to_mfn [2023-11-12 00:15:08,974 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2023-11-12 00:15:08,974 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2023-11-12 00:15:08,975 INFO L130 BoogieDeclarations]: Found specification of procedure add_id_to_freelist [2023-11-12 00:15:08,975 INFO L138 BoogieDeclarations]: Found implementation of procedure add_id_to_freelist [2023-11-12 00:15:08,975 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_alloc_rx_buffers [2023-11-12 00:15:08,986 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_alloc_rx_buffers [2023-11-12 00:15:08,986 INFO L130 BoogieDeclarations]: Found specification of procedure skb_entry_set_link [2023-11-12 00:15:08,986 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_entry_set_link [2023-11-12 00:15:08,986 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-12 00:15:08,987 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-12 00:15:08,987 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-12 00:15:08,987 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-12 00:15:08,988 INFO L130 BoogieDeclarations]: Found specification of procedure store_rxbuf [2023-11-12 00:15:08,988 INFO L138 BoogieDeclarations]: Found implementation of procedure store_rxbuf [2023-11-12 00:15:08,988 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2023-11-12 00:15:08,988 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2023-11-12 00:15:08,988 INFO L130 BoogieDeclarations]: Found specification of procedure free_pages [2023-11-12 00:15:08,988 INFO L138 BoogieDeclarations]: Found implementation of procedure free_pages [2023-11-12 00:15:08,988 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_end_foreign_access_ref [2023-11-12 00:15:08,989 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_end_foreign_access_ref [2023-11-12 00:15:08,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-12 00:15:08,989 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_make_one_txreq [2023-11-12 00:15:08,989 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_make_one_txreq [2023-11-12 00:15:08,989 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2023-11-12 00:15:08,989 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2023-11-12 00:15:08,989 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_free_grant_references [2023-11-12 00:15:08,989 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_free_grant_references [2023-11-12 00:15:08,990 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2023-11-12 00:15:08,990 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2023-11-12 00:15:08,990 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-11-12 00:15:08,990 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-11-12 00:15:08,990 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-12 00:15:08,990 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-12 00:15:08,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-12 00:15:08,991 INFO L130 BoogieDeclarations]: Found specification of procedure unbind_from_irqhandler [2023-11-12 00:15:08,991 INFO L138 BoogieDeclarations]: Found implementation of procedure unbind_from_irqhandler [2023-11-12 00:15:08,991 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-12 00:15:08,991 INFO L130 BoogieDeclarations]: Found specification of procedure get_zeroed_page [2023-11-12 00:15:08,991 INFO L138 BoogieDeclarations]: Found implementation of procedure get_zeroed_page [2023-11-12 00:15:08,991 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_free_netdev [2023-11-12 00:15:08,992 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_free_netdev [2023-11-12 00:15:08,992 INFO L130 BoogieDeclarations]: Found specification of procedure netback_changed [2023-11-12 00:15:08,992 INFO L138 BoogieDeclarations]: Found implementation of procedure netback_changed [2023-11-12 00:15:08,992 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_poll_controller [2023-11-12 00:15:08,992 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_poll_controller [2023-11-12 00:15:08,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:15:08,992 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_page [2023-11-12 00:15:08,993 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_page [2023-11-12 00:15:08,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-12 00:15:08,993 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-12 00:15:08,993 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_select_queue [2023-11-12 00:15:08,993 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_select_queue [2023-11-12 00:15:08,993 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_end_access [2023-11-12 00:15:08,993 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_end_access [2023-11-12 00:15:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-11-12 00:15:08,994 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-11-12 00:15:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-11-12 00:15:08,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-11-12 00:15:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2023-11-12 00:15:08,994 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2023-11-12 00:15:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_init [2023-11-12 00:15:08,994 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_init [2023-11-12 00:15:08,995 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-12 00:15:08,995 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-12 00:15:08,995 INFO L130 BoogieDeclarations]: Found specification of procedure skb_add_rx_frag [2023-11-12 00:15:08,996 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_add_rx_frag [2023-11-12 00:15:08,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:15:08,996 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-12 00:15:08,996 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-12 00:15:08,996 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2023-11-12 00:15:08,996 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2023-11-12 00:15:08,996 INFO L130 BoogieDeclarations]: Found specification of procedure napi_enable [2023-11-12 00:15:08,997 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_enable [2023-11-12 00:15:08,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-12 00:15:08,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-12 00:15:08,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-12 00:15:08,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-12 00:15:08,997 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_fix_features [2023-11-12 00:15:08,997 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_fix_features [2023-11-12 00:15:08,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:15:08,998 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-12 00:15:08,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-12 00:15:08,998 INFO L130 BoogieDeclarations]: Found specification of procedure get_phys_to_machine [2023-11-12 00:15:08,998 INFO L138 BoogieDeclarations]: Found implementation of procedure get_phys_to_machine [2023-11-12 00:15:08,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:15:08,998 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2023-11-12 00:15:08,998 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2023-11-12 00:15:08,999 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_next [2023-11-12 00:15:08,999 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_next [2023-11-12 00:15:08,999 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-12 00:15:08,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-12 00:15:08,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:15:08,999 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2023-11-12 00:15:08,999 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2023-11-12 00:15:09,000 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2023-11-12 00:15:09,000 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2023-11-12 00:15:09,000 INFO L130 BoogieDeclarations]: Found specification of procedure show_rxbuf [2023-11-12 00:15:09,000 INFO L138 BoogieDeclarations]: Found implementation of procedure show_rxbuf [2023-11-12 00:15:09,000 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_gso [2023-11-12 00:15:09,000 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_gso [2023-11-12 00:15:09,000 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2023-11-12 00:15:09,001 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2023-11-12 00:15:09,001 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_grant_foreign_access_ref [2023-11-12 00:15:09,001 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_grant_foreign_access_ref [2023-11-12 00:15:09,001 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2023-11-12 00:15:09,001 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2023-11-12 00:15:09,001 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_set_features [2023-11-12 00:15:09,001 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_set_features [2023-11-12 00:15:09,002 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2023-11-12 00:15:09,002 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2023-11-12 00:15:09,002 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_begin_irq [2023-11-12 00:15:09,002 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_begin_irq [2023-11-12 00:15:09,002 INFO L130 BoogieDeclarations]: Found specification of procedure dev_warn [2023-11-12 00:15:09,002 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_warn [2023-11-12 00:15:09,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:15:09,003 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_dev_fatal [2023-11-12 00:15:09,003 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_dev_fatal [2023-11-12 00:15:09,003 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_free_evtchn [2023-11-12 00:15:09,003 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_free_evtchn [2023-11-12 00:15:09,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:15:09,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:15:09,003 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_tx_buf_gc [2023-11-12 00:15:09,004 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_tx_buf_gc [2023-11-12 00:15:09,008 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2023-11-12 00:15:09,008 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2023-11-12 00:15:09,009 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-12 00:15:09,009 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-12 00:15:09,873 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:15:09,896 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:15:11,250 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-12 00:15:16,292 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:15:17,827 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:15:17,828 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-12 00:15:17,836 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:15:17 BoogieIcfgContainer [2023-11-12 00:15:17,836 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:15:17,840 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:15:17,840 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:15:17,843 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:15:17,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:15:04" (1/3) ... [2023-11-12 00:15:17,846 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@720644d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:15:17, skipping insertion in model container [2023-11-12 00:15:17,846 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:08" (2/3) ... [2023-11-12 00:15:17,847 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@720644d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:15:17, skipping insertion in model container [2023-11-12 00:15:17,847 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:15:17" (3/3) ... [2023-11-12 00:15:17,849 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i [2023-11-12 00:15:17,873 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:15:17,873 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:15:17,984 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:15:17,993 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;@31687413, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:15:17,994 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:15:18,007 INFO L276 IsEmpty]: Start isEmpty. Operand has 1318 states, 814 states have (on average 1.3427518427518428) internal successors, (1093), 853 states have internal predecessors, (1093), 390 states have call successors, (390), 113 states have call predecessors, (390), 112 states have return successors, (381), 374 states have call predecessors, (381), 381 states have call successors, (381) [2023-11-12 00:15:18,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2023-11-12 00:15:18,071 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:15:18,072 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 9, 9, 9, 9, 9, 9, 3, 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, 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] [2023-11-12 00:15:18,073 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:15:18,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:15:18,081 INFO L85 PathProgramCache]: Analyzing trace with hash 505375411, now seen corresponding path program 1 times [2023-11-12 00:15:18,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:15:18,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058678293] [2023-11-12 00:15:18,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:15:18,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:15:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:15:19,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2023-11-12 00:15:19,617 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:15:19,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058678293] [2023-11-12 00:15:19,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058678293] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:15:19,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:15:19,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:15:19,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144124016] [2023-11-12 00:15:19,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:15:19,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:15:19,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:15:19,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:15:19,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:15:19,687 INFO L87 Difference]: Start difference. First operand has 1318 states, 814 states have (on average 1.3427518427518428) internal successors, (1093), 853 states have internal predecessors, (1093), 390 states have call successors, (390), 113 states have call predecessors, (390), 112 states have return successors, (381), 374 states have call predecessors, (381), 381 states have call successors, (381) Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2023-11-12 00:15:22,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:15:22,518 INFO L93 Difference]: Finished difference Result 3278 states and 4631 transitions. [2023-11-12 00:15:22,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:15:22,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 343 [2023-11-12 00:15:22,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:15:22,570 INFO L225 Difference]: With dead ends: 3278 [2023-11-12 00:15:22,570 INFO L226 Difference]: Without dead ends: 1975 [2023-11-12 00:15:22,582 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 [2023-11-12 00:15:22,585 INFO L413 NwaCegarLoop]: 1622 mSDtfsCounter, 1038 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1038 SdHoareTripleChecker+Valid, 3148 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:15:22,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1038 Valid, 3148 Invalid, 497 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-12 00:15:22,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2023-11-12 00:15:22,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1971. [2023-11-12 00:15:22,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1971 states, 1234 states have (on average 1.3322528363047001) internal successors, (1644), 1272 states have internal predecessors, (1644), 554 states have call successors, (554), 183 states have call predecessors, (554), 182 states have return successors, (553), 542 states have call predecessors, (553), 553 states have call successors, (553) [2023-11-12 00:15:22,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1971 states to 1971 states and 2751 transitions. [2023-11-12 00:15:22,864 INFO L78 Accepts]: Start accepts. Automaton has 1971 states and 2751 transitions. Word has length 343 [2023-11-12 00:15:22,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:15:22,869 INFO L495 AbstractCegarLoop]: Abstraction has 1971 states and 2751 transitions. [2023-11-12 00:15:22,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2023-11-12 00:15:22,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1971 states and 2751 transitions. [2023-11-12 00:15:22,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2023-11-12 00:15:22,882 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:15:22,883 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 9, 9, 9, 9, 9, 9, 3, 2, 2, 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, 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] [2023-11-12 00:15:22,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:15:22,883 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:15:22,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:15:22,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1080781016, now seen corresponding path program 1 times [2023-11-12 00:15:22,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:15:22,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245664797] [2023-11-12 00:15:22,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:15:22,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:15:23,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:15:23,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1464 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1464 trivial. 0 not checked. [2023-11-12 00:15:23,565 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:15:23,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245664797] [2023-11-12 00:15:23,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245664797] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:15:23,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:15:23,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:15:23,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171313067] [2023-11-12 00:15:23,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:15:23,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:15:23,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:15:23,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:15:23,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:15:23,574 INFO L87 Difference]: Start difference. First operand 1971 states and 2751 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2023-11-12 00:15:25,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:15:27,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:15:27,688 INFO L93 Difference]: Finished difference Result 4921 states and 6855 transitions. [2023-11-12 00:15:27,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:15:27,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 346 [2023-11-12 00:15:27,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:15:27,722 INFO L225 Difference]: With dead ends: 4921 [2023-11-12 00:15:27,722 INFO L226 Difference]: Without dead ends: 3008 [2023-11-12 00:15:27,732 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 [2023-11-12 00:15:27,734 INFO L413 NwaCegarLoop]: 1768 mSDtfsCounter, 1331 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1331 SdHoareTripleChecker+Valid, 3184 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-12 00:15:27,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1331 Valid, 3184 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-12 00:15:27,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2023-11-12 00:15:27,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 2996. [2023-11-12 00:15:27,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2996 states, 1895 states have (on average 1.3403693931398417) internal successors, (2540), 1967 states have internal predecessors, (2540), 817 states have call successors, (817), 286 states have call predecessors, (817), 283 states have return successors, (816), 788 states have call predecessors, (816), 816 states have call successors, (816) [2023-11-12 00:15:27,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2996 states to 2996 states and 4173 transitions. [2023-11-12 00:15:27,923 INFO L78 Accepts]: Start accepts. Automaton has 2996 states and 4173 transitions. Word has length 346 [2023-11-12 00:15:27,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:15:27,929 INFO L495 AbstractCegarLoop]: Abstraction has 2996 states and 4173 transitions. [2023-11-12 00:15:27,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2023-11-12 00:15:27,929 INFO L276 IsEmpty]: Start isEmpty. Operand 2996 states and 4173 transitions. [2023-11-12 00:15:27,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2023-11-12 00:15:27,941 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:15:27,942 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 9, 9, 9, 9, 9, 9, 3, 2, 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, 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] [2023-11-12 00:15:27,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:15:27,943 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:15:27,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:15:27,953 INFO L85 PathProgramCache]: Analyzing trace with hash 153837920, now seen corresponding path program 1 times [2023-11-12 00:15:27,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:15:27,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528480322] [2023-11-12 00:15:27,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:15:27,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:15:28,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:15:29,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2573 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2568 trivial. 0 not checked. [2023-11-12 00:15:29,082 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:15:29,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528480322] [2023-11-12 00:15:29,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528480322] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:15:29,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:15:29,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:15:29,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245202317] [2023-11-12 00:15:29,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:15:29,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:15:29,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:15:29,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:15:29,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:15:29,086 INFO L87 Difference]: Start difference. First operand 2996 states and 4173 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2023-11-12 00:15:31,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:15:34,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:15:34,967 INFO L93 Difference]: Finished difference Result 5946 states and 8279 transitions. [2023-11-12 00:15:34,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:15:34,968 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 431 [2023-11-12 00:15:34,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:15:34,992 INFO L225 Difference]: With dead ends: 5946 [2023-11-12 00:15:34,992 INFO L226 Difference]: Without dead ends: 2996 [2023-11-12 00:15:35,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:15:35,008 INFO L413 NwaCegarLoop]: 1585 mSDtfsCounter, 3 mSDsluCounter, 3166 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 4751 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-11-12 00:15:35,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 4751 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-11-12 00:15:35,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2996 states. [2023-11-12 00:15:35,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2996 to 2996. [2023-11-12 00:15:35,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2996 states, 1895 states have (on average 1.3361477572559366) internal successors, (2532), 1967 states have internal predecessors, (2532), 817 states have call successors, (817), 286 states have call predecessors, (817), 283 states have return successors, (816), 788 states have call predecessors, (816), 816 states have call successors, (816) [2023-11-12 00:15:35,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2996 states to 2996 states and 4165 transitions. [2023-11-12 00:15:35,186 INFO L78 Accepts]: Start accepts. Automaton has 2996 states and 4165 transitions. Word has length 431 [2023-11-12 00:15:35,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:15:35,188 INFO L495 AbstractCegarLoop]: Abstraction has 2996 states and 4165 transitions. [2023-11-12 00:15:35,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2023-11-12 00:15:35,189 INFO L276 IsEmpty]: Start isEmpty. Operand 2996 states and 4165 transitions. [2023-11-12 00:15:35,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2023-11-12 00:15:35,204 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:15:35,204 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 9, 9, 9, 9, 9, 9, 3, 2, 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, 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] [2023-11-12 00:15:35,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 00:15:35,205 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:15:35,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:15:35,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1844873497, now seen corresponding path program 1 times [2023-11-12 00:15:35,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:15:35,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770210243] [2023-11-12 00:15:35,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:15:35,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:15:35,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:15:36,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2573 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2568 trivial. 0 not checked. [2023-11-12 00:15:36,058 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:15:36,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770210243] [2023-11-12 00:15:36,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770210243] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:15:36,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:15:36,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:15:36,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976094129] [2023-11-12 00:15:36,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:15:36,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:15:36,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:15:36,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:15:36,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:15:36,064 INFO L87 Difference]: Start difference. First operand 2996 states and 4165 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2023-11-12 00:15:38,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:15:40,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:15:40,864 INFO L93 Difference]: Finished difference Result 7866 states and 10923 transitions. [2023-11-12 00:15:40,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:15:40,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) Word has length 437 [2023-11-12 00:15:40,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:15:40,901 INFO L225 Difference]: With dead ends: 7866 [2023-11-12 00:15:40,901 INFO L226 Difference]: Without dead ends: 4928 [2023-11-12 00:15:40,914 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 [2023-11-12 00:15:40,918 INFO L413 NwaCegarLoop]: 2480 mSDtfsCounter, 1665 mSDsluCounter, 1476 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1665 SdHoareTripleChecker+Valid, 3956 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-12 00:15:40,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1665 Valid, 3956 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-11-12 00:15:40,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4928 states. [2023-11-12 00:15:41,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4928 to 4923. [2023-11-12 00:15:41,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4923 states, 3117 states have (on average 1.3333333333333333) internal successors, (4156), 3240 states have internal predecessors, (4156), 1333 states have call successors, (1333), 475 states have call predecessors, (1333), 472 states have return successors, (1332), 1288 states have call predecessors, (1332), 1332 states have call successors, (1332) [2023-11-12 00:15:41,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4923 states to 4923 states and 6821 transitions. [2023-11-12 00:15:41,277 INFO L78 Accepts]: Start accepts. Automaton has 4923 states and 6821 transitions. Word has length 437 [2023-11-12 00:15:41,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:15:41,279 INFO L495 AbstractCegarLoop]: Abstraction has 4923 states and 6821 transitions. [2023-11-12 00:15:41,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2023-11-12 00:15:41,279 INFO L276 IsEmpty]: Start isEmpty. Operand 4923 states and 6821 transitions. [2023-11-12 00:15:41,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2023-11-12 00:15:41,297 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:15:41,297 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 9, 9, 9, 9, 9, 9, 3, 2, 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, 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] [2023-11-12 00:15:41,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 00:15:41,298 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:15:41,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:15:41,299 INFO L85 PathProgramCache]: Analyzing trace with hash 74577806, now seen corresponding path program 1 times [2023-11-12 00:15:41,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:15:41,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597736806] [2023-11-12 00:15:41,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:15:41,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:15:41,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:15:43,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2573 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2573 trivial. 0 not checked. [2023-11-12 00:15:43,610 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:15:43,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597736806] [2023-11-12 00:15:43,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597736806] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:15:43,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:15:43,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:15:43,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214007908] [2023-11-12 00:15:43,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:15:43,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:15:43,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:15:43,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:15:43,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:15:43,618 INFO L87 Difference]: Start difference. First operand 4923 states and 6821 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 3 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2023-11-12 00:15:45,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:15:48,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:15:48,274 INFO L93 Difference]: Finished difference Result 5264 states and 7135 transitions. [2023-11-12 00:15:48,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:15:48,274 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 3 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 436 [2023-11-12 00:15:48,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:15:48,311 INFO L225 Difference]: With dead ends: 5264 [2023-11-12 00:15:48,311 INFO L226 Difference]: Without dead ends: 5261 [2023-11-12 00:15:48,315 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 [2023-11-12 00:15:48,315 INFO L413 NwaCegarLoop]: 1613 mSDtfsCounter, 1341 mSDsluCounter, 1967 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1341 SdHoareTripleChecker+Valid, 3580 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-12 00:15:48,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1341 Valid, 3580 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-12 00:15:48,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5261 states.