./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff7a2c7-8be4-41a7-8a92-dede554e690e/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff7a2c7-8be4-41a7-8a92-dede554e690e/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff7a2c7-8be4-41a7-8a92-dede554e690e/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff7a2c7-8be4-41a7-8a92-dede554e690e/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff7a2c7-8be4-41a7-8a92-dede554e690e/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff7a2c7-8be4-41a7-8a92-dede554e690e/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c2d7f6c194f04de54ba5a893678a720456a663ad567a49e51faf84a68b16d812 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:09:19,270 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:09:19,389 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff7a2c7-8be4-41a7-8a92-dede554e690e/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 05:09:19,399 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:09:19,400 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:09:19,438 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:09:19,439 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:09:19,439 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:09:19,440 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:09:19,445 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:09:19,446 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:09:19,446 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:09:19,447 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:09:19,448 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:09:19,450 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:09:19,450 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:09:19,450 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:09:19,451 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:09:19,451 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:09:19,452 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:09:19,452 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:09:19,453 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:09:19,454 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:09:19,455 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:09:19,455 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:09:19,455 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:09:19,456 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:09:19,456 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:09:19,457 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:09:19,457 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:09:19,458 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:09:19,459 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:09:19,459 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:09:19,459 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:09:19,459 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:09:19,460 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:09:19,460 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:09:19,460 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:09:19,460 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:09:19,461 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:09:19,461 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:09:19,461 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:09:19,461 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_aff7a2c7-8be4-41a7-8a92-dede554e690e/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff7a2c7-8be4-41a7-8a92-dede554e690e/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2d7f6c194f04de54ba5a893678a720456a663ad567a49e51faf84a68b16d812 [2023-11-19 05:09:19,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:09:19,763 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:09:19,765 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:09:19,767 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:09:19,767 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:09:19,769 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff7a2c7-8be4-41a7-8a92-dede554e690e/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2023-11-19 05:09:22,931 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:09:23,738 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:09:23,740 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff7a2c7-8be4-41a7-8a92-dede554e690e/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2023-11-19 05:09:23,811 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff7a2c7-8be4-41a7-8a92-dede554e690e/bin/utaipan-verify-t7M7D8N6sZ/data/e81fb21fd/19bd58cea09141c48d21746ac66660c5/FLAG8bef9164a [2023-11-19 05:09:23,829 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff7a2c7-8be4-41a7-8a92-dede554e690e/bin/utaipan-verify-t7M7D8N6sZ/data/e81fb21fd/19bd58cea09141c48d21746ac66660c5 [2023-11-19 05:09:23,834 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:09:23,837 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:09:23,840 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:09:23,840 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:09:23,845 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:09:23,846 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:09:23" (1/1) ... [2023-11-19 05:09:23,847 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b73c05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:23, skipping insertion in model container [2023-11-19 05:09:23,848 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:09:23" (1/1) ... [2023-11-19 05:09:24,121 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:09:28,495 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_aff7a2c7-8be4-41a7-8a92-dede554e690e/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[415292,415305] [2023-11-19 05:09:28,500 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_aff7a2c7-8be4-41a7-8a92-dede554e690e/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[415437,415450] [2023-11-19 05:09:28,524 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:09:28,561 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:09:28,745 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"); [6109] [2023-11-19 05:09:28,747 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)); [6116] [2023-11-19 05:09:28,747 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("":); [6123] [2023-11-19 05:09:28,751 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/debian/klever-work/native-scheduler-work-dir/scheduler/jobs/dfbfd2da522a1f5f4786ee57b863db44/klever-core-work-dir/de2fed6/linux-alloc-spinlock/lkbce/arch/x86/include/asm/paravirt.h"), "i" (804), "i" (12UL)); [6227-6228] [2023-11-19 05:09:28,751 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("771:\n\tcall *%c2;\n772:\n.pushsection .parainstructions,\"a\"\n .balign 8 \n .quad 771b\n .byte %c1\n .byte 772b-771b\n .short %c3\n.popsection\n": "=a" (__eax): [paravirt_typenum] "i" (44UL), [paravirt_opptr] "i" (& pv_irq_ops.save_fl.func), [paravirt_clobber] "i" (1): "memory", "cc"); [6233-6235] [2023-11-19 05:09:28,752 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/debian/klever-work/native-scheduler-work-dir/scheduler/jobs/dfbfd2da522a1f5f4786ee57b863db44/klever-core-work-dir/de2fed6/linux-alloc-spinlock/lkbce/arch/x86/include/asm/paravirt.h"), "i" (809), "i" (12UL)); [6260-6261] [2023-11-19 05:09:28,753 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("771:\n\tcall *%c2;\n772:\n.pushsection .parainstructions,\"a\"\n .balign 8 \n .quad 771b\n .byte %c1\n .byte 772b-771b\n .short %c3\n.popsection\n": "=a" (__eax): [paravirt_typenum] "i" (45UL), [paravirt_opptr] "i" (& pv_irq_ops.restore_fl.func), [paravirt_clobber] "i" (1), "D" (f): "memory", "cc"); [6266-6268] [2023-11-19 05:09:28,753 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/debian/klever-work/native-scheduler-work-dir/scheduler/jobs/dfbfd2da522a1f5f4786ee57b863db44/klever-core-work-dir/de2fed6/linux-alloc-spinlock/lkbce/arch/x86/include/asm/paravirt.h"), "i" (814), "i" (12UL)); [6292-6293] [2023-11-19 05:09:28,754 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("771:\n\tcall *%c2;\n772:\n.pushsection .parainstructions,\"a\"\n .balign 8 \n .quad 771b\n .byte %c1\n .byte 772b-771b\n .short %c3\n.popsection\n": "=a" (__eax): [paravirt_typenum] "i" (46UL), [paravirt_opptr] "i" (& pv_irq_ops.irq_disable.func), [paravirt_clobber] "i" (1): "memory", "cc"); [6298-6300] [2023-11-19 05:09:28,755 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)); [6335] [2023-11-19 05:09:28,762 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" (488), "i" (12UL)); [6535-6536] [2023-11-19 05:09:28,783 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" (502), "i" (12UL)); [6919-6920] [2023-11-19 05:09:28,783 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [6926] [2023-11-19 05:09:28,821 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 *)"drivers/net/xen-netfront.c"), "i" (317), "i" (12UL)); [7618-7619] [2023-11-19 05:09:28,822 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 *)"drivers/net/xen-netfront.c"), "i" (321), "i" (12UL)); [7632-7633] [2023-11-19 05:09:28,824 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7656] [2023-11-19 05:09:28,824 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7661] [2023-11-19 05:09:28,824 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [7663] [2023-11-19 05:09:28,827 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 *)"drivers/net/xen-netfront.c"), "i" (374), "i" (12UL)); [7737-7738] [2023-11-19 05:09:28,831 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("lfence": : : "memory"); [7745] [2023-11-19 05:09:28,832 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 *)"drivers/net/xen-netfront.c"), "i" (393), "i" (12UL)); [7764-7765] [2023-11-19 05:09:28,834 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [7787] [2023-11-19 05:09:28,837 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 *)"drivers/net/xen-netfront.c"), "i" (451), "i" (12UL)); [7868-7869] [2023-11-19 05:09:28,839 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 *)"drivers/net/xen-netfront.c"), "i" (473), "i" (12UL)); [7909-7910] [2023-11-19 05:09:28,840 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 *)"drivers/net/xen-netfront.c"), "i" (482), "i" (12UL)); [7924-7925] [2023-11-19 05:09:28,842 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 *)"drivers/net/xen-netfront.c"), "i" (496), "i" (12UL)); [7950-7951] [2023-11-19 05:09:28,843 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 *)"drivers/net/xen-netfront.c"), "i" (514), "i" (12UL)); [7977-7978] [2023-11-19 05:09:28,847 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("add %%gs:%P1, %0": "=r" (tcp_ptr__): "m" (this_cpu_off), "0" (np->stats)); [8093] [2023-11-19 05:09:28,850 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 *)"drivers/net/xen-netfront.c"), "i" (599), "i" (12UL)); [8207-8208] [2023-11-19 05:09:28,855 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [8259] [2023-11-19 05:09:28,856 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [8261] [2023-11-19 05:09:28,859 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 *)"drivers/net/xen-netfront.c"), "i" (678), "i" (12UL)); [8324-8325] [2023-11-19 05:09:28,866 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 *)"drivers/net/xen-netfront.c"), "i" (775), "i" (12UL)); [8507-8508] [2023-11-19 05:09:28,873 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 *)"drivers/net/xen-netfront.c"), "i" (855), "i" (12UL)); [8657-8658] [2023-11-19 05:09:28,874 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 *)"drivers/net/xen-netfront.c"), "i" (858), "i" (12UL)); [8674-8675] [2023-11-19 05:09:28,877 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("add %%gs:%P1, %0": "=r" (tcp_ptr__): "m" (this_cpu_off), "0" (np->stats)); [8752] [2023-11-19 05:09:28,880 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("lfence": : : "memory"); [8840] [2023-11-19 05:09:28,886 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [8955] [2023-11-19 05:09:28,889 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("": "=r" (__ptr): "0" (np->stats)); [9027] [2023-11-19 05:09:28,913 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("": "=r" (__ptr): "0" (np->stats)); [9397] [2023-11-19 05:09:29,119 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_aff7a2c7-8be4-41a7-8a92-dede554e690e/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[415292,415305] [2023-11-19 05:09:29,121 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_aff7a2c7-8be4-41a7-8a92-dede554e690e/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[415437,415450] [2023-11-19 05:09:29,132 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:09:29,466 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:09:29,474 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:09:29,475 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:29 WrapperNode [2023-11-19 05:09:29,475 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:09:29,476 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:09:29,476 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:09:29,476 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:09:29,485 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:29" (1/1) ... [2023-11-19 05:09:29,630 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:29" (1/1) ... [2023-11-19 05:09:29,814 INFO L138 Inliner]: procedures = 562, calls = 2419, calls flagged for inlining = 267, calls inlined = 188, statements flattened = 4629 [2023-11-19 05:09:29,815 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:09:29,816 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:09:29,816 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:09:29,816 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:09:29,826 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:29" (1/1) ... [2023-11-19 05:09:29,827 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:29" (1/1) ... [2023-11-19 05:09:29,850 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:29" (1/1) ... [2023-11-19 05:09:29,850 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:29" (1/1) ... [2023-11-19 05:09:29,974 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:29" (1/1) ... [2023-11-19 05:09:30,008 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:29" (1/1) ... [2023-11-19 05:09:30,047 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:29" (1/1) ... [2023-11-19 05:09:30,069 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:29" (1/1) ... [2023-11-19 05:09:30,111 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:09:30,112 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:09:30,113 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:09:30,113 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:09:30,114 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:29" (1/1) ... [2023-11-19 05:09:30,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:09:30,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff7a2c7-8be4-41a7-8a92-dede554e690e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:09:30,149 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff7a2c7-8be4-41a7-8a92-dede554e690e/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:09:30,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff7a2c7-8be4-41a7-8a92-dede554e690e/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:09:30,199 INFO L130 BoogieDeclarations]: Found specification of procedure get_page [2023-11-19 05:09:30,199 INFO L138 BoogieDeclarations]: Found implementation of procedure get_page [2023-11-19 05:09:30,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-19 05:09:30,199 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-19 05:09:30,200 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2023-11-19 05:09:30,200 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2023-11-19 05:09:30,200 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2023-11-19 05:09:30,200 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2023-11-19 05:09:30,200 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 05:09:30,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 05:09:30,201 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_scanf [2023-11-19 05:09:30,201 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_scanf [2023-11-19 05:09:30,201 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_rx_lock_of_netfront_info [2023-11-19 05:09:30,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_rx_lock_of_netfront_info [2023-11-19 05:09:30,201 INFO L130 BoogieDeclarations]: Found specification of procedure bind_evtchn_to_irqhandler [2023-11-19 05:09:30,202 INFO L138 BoogieDeclarations]: Found implementation of procedure bind_evtchn_to_irqhandler [2023-11-19 05:09:30,202 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2023-11-19 05:09:30,202 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2023-11-19 05:09:30,203 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_tx_interrupt [2023-11-19 05:09:30,203 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_tx_interrupt [2023-11-19 05:09:30,203 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2023-11-19 05:09:30,204 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2023-11-19 05:09:30,205 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_grant_ring [2023-11-19 05:09:30,205 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_grant_ring [2023-11-19 05:09:30,205 INFO L130 BoogieDeclarations]: Found specification of procedure free_percpu [2023-11-19 05:09:30,205 INFO L138 BoogieDeclarations]: Found implementation of procedure free_percpu [2023-11-19 05:09:30,206 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_claim_grant_reference [2023-11-19 05:09:30,206 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_claim_grant_reference [2023-11-19 05:09:30,206 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_end_foreign_access [2023-11-19 05:09:30,206 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_end_foreign_access [2023-11-19 05:09:30,206 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_disconnect_backend [2023-11-19 05:09:30,207 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_disconnect_backend [2023-11-19 05:09:30,208 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-19 05:09:30,208 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-19 05:09:30,208 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_alloc_grant_references [2023-11-19 05:09:30,208 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_alloc_grant_references [2023-11-19 05:09:30,209 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-19 05:09:30,209 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_release_grant_reference [2023-11-19 05:09:30,209 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_release_grant_reference [2023-11-19 05:09:30,209 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-11-19 05:09:30,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-11-19 05:09:30,209 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2023-11-19 05:09:30,210 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2023-11-19 05:09:30,210 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-19 05:09:30,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-19 05:09:30,211 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_rxidx [2023-11-19 05:09:30,211 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_rxidx [2023-11-19 05:09:30,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:09:30,211 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2023-11-19 05:09:30,212 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2023-11-19 05:09:30,212 INFO L130 BoogieDeclarations]: Found specification of procedure pfn_to_mfn [2023-11-19 05:09:30,212 INFO L138 BoogieDeclarations]: Found implementation of procedure pfn_to_mfn [2023-11-19 05:09:30,212 INFO L130 BoogieDeclarations]: Found specification of procedure skb_entry_set_link [2023-11-19 05:09:30,212 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_entry_set_link [2023-11-19 05:09:30,212 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-19 05:09:30,213 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-19 05:09:30,213 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_free_grant_references [2023-11-19 05:09:30,213 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_free_grant_references [2023-11-19 05:09:30,213 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2023-11-19 05:09:30,213 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2023-11-19 05:09:30,213 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2023-11-19 05:09:30,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2023-11-19 05:09:30,214 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-19 05:09:30,214 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-19 05:09:30,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 05:09:30,214 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-19 05:09:30,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-11-19 05:09:30,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:09:30,215 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2023-11-19 05:09:30,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2023-11-19 05:09:30,216 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2023-11-19 05:09:30,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2023-11-19 05:09:30,216 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_124 [2023-11-19 05:09:30,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_124 [2023-11-19 05:09:30,217 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2023-11-19 05:09:30,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2023-11-19 05:09:30,218 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-11-19 05:09:30,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-11-19 05:09:30,218 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_get_rx_ref [2023-11-19 05:09:30,218 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_get_rx_ref [2023-11-19 05:09:30,219 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_tx_lock_of_netfront_info [2023-11-19 05:09:30,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_tx_lock_of_netfront_info [2023-11-19 05:09:30,219 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-19 05:09:30,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-19 05:09:30,219 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2023-11-19 05:09:30,221 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2023-11-19 05:09:30,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:09:30,221 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2023-11-19 05:09:30,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2023-11-19 05:09:30,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:09:30,222 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-19 05:09:30,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-19 05:09:30,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:09:30,222 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2023-11-19 05:09:30,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2023-11-19 05:09:30,224 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2023-11-19 05:09:30,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2023-11-19 05:09:30,224 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_grant_foreign_access_ref [2023-11-19 05:09:30,224 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_grant_foreign_access_ref [2023-11-19 05:09:30,224 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2023-11-19 05:09:30,224 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2023-11-19 05:09:30,225 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-19 05:09:30,225 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-19 05:09:30,225 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2023-11-19 05:09:30,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2023-11-19 05:09:30,226 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-11-19 05:09:30,227 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-11-19 05:09:30,230 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_dev_fatal [2023-11-19 05:09:30,230 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_dev_fatal [2023-11-19 05:09:30,231 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_get_rx_skb [2023-11-19 05:09:30,231 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_get_rx_skb [2023-11-19 05:09:30,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:09:30,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:09:30,233 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_netif_exit_20_2 [2023-11-19 05:09:30,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_netif_exit_20_2 [2023-11-19 05:09:30,233 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-19 05:09:30,239 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-19 05:09:30,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-19 05:09:30,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-19 05:09:30,240 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_release_tx_bufs [2023-11-19 05:09:30,240 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_release_tx_bufs [2023-11-19 05:09:30,240 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2023-11-19 05:09:30,240 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2023-11-19 05:09:30,240 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_write [2023-11-19 05:09:30,240 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_write [2023-11-19 05:09:30,240 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2023-11-19 05:09:30,241 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2023-11-19 05:09:30,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2023-11-19 05:09:30,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2023-11-19 05:09:30,241 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_transaction_end [2023-11-19 05:09:30,241 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_transaction_end [2023-11-19 05:09:30,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 05:09:30,242 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 05:09:30,242 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-19 05:09:30,242 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-19 05:09:30,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2023-11-19 05:09:30,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2023-11-19 05:09:30,242 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_alloc_evtchn [2023-11-19 05:09:30,242 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_alloc_evtchn [2023-11-19 05:09:30,243 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2023-11-19 05:09:30,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2023-11-19 05:09:30,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:09:30,243 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_printf [2023-11-19 05:09:30,243 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_printf [2023-11-19 05:09:30,243 INFO L130 BoogieDeclarations]: Found specification of procedure netfront_tx_slot_available [2023-11-19 05:09:30,243 INFO L138 BoogieDeclarations]: Found implementation of procedure netfront_tx_slot_available [2023-11-19 05:09:30,244 INFO L130 BoogieDeclarations]: Found specification of procedure notify_remote_via_irq [2023-11-19 05:09:30,244 INFO L138 BoogieDeclarations]: Found implementation of procedure notify_remote_via_irq [2023-11-19 05:09:30,244 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_tx_lock_of_netfront_info [2023-11-19 05:09:30,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_tx_lock_of_netfront_info [2023-11-19 05:09:30,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:09:30,244 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_tail [2023-11-19 05:09:30,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_tail [2023-11-19 05:09:30,245 INFO L130 BoogieDeclarations]: Found specification of procedure store_rxbuf_min [2023-11-19 05:09:30,245 INFO L138 BoogieDeclarations]: Found implementation of procedure store_rxbuf_min [2023-11-19 05:09:30,245 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_107 [2023-11-19 05:09:30,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_107 [2023-11-19 05:09:30,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 05:09:30,245 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 05:09:30,246 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 05:09:30,246 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2023-11-19 05:09:30,246 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2023-11-19 05:09:30,246 INFO L130 BoogieDeclarations]: Found specification of procedure add_id_to_freelist [2023-11-19 05:09:30,246 INFO L138 BoogieDeclarations]: Found implementation of procedure add_id_to_freelist [2023-11-19 05:09:30,246 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_alloc_rx_buffers [2023-11-19 05:09:30,246 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_alloc_rx_buffers [2023-11-19 05:09:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-19 05:09:30,247 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-19 05:09:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-11-19 05:09:30,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-11-19 05:09:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure free_pages [2023-11-19 05:09:30,247 INFO L138 BoogieDeclarations]: Found implementation of procedure free_pages [2023-11-19 05:09:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_end_foreign_access_ref [2023-11-19 05:09:30,248 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_end_foreign_access_ref [2023-11-19 05:09:30,248 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2023-11-19 05:09:30,248 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2023-11-19 05:09:30,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_104 [2023-11-19 05:09:30,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_104 [2023-11-19 05:09:30,304 INFO L130 BoogieDeclarations]: Found specification of procedure unbind_from_irqhandler [2023-11-19 05:09:30,304 INFO L138 BoogieDeclarations]: Found implementation of procedure unbind_from_irqhandler [2023-11-19 05:09:30,304 INFO L130 BoogieDeclarations]: Found specification of procedure get_zeroed_page [2023-11-19 05:09:30,304 INFO L138 BoogieDeclarations]: Found implementation of procedure get_zeroed_page [2023-11-19 05:09:30,304 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_insert [2023-11-19 05:09:30,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_insert [2023-11-19 05:09:30,304 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2023-11-19 05:09:30,305 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2023-11-19 05:09:30,305 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-11-19 05:09:30,305 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-11-19 05:09:30,305 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_page [2023-11-19 05:09:30,305 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_page [2023-11-19 05:09:30,305 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_end_access [2023-11-19 05:09:30,305 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_end_access [2023-11-19 05:09:30,305 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-11-19 05:09:30,305 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-11-19 05:09:30,305 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-19 05:09:30,305 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-19 05:09:30,305 INFO L130 BoogieDeclarations]: Found specification of procedure skb_add_rx_frag [2023-11-19 05:09:30,305 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_add_rx_frag [2023-11-19 05:09:30,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:09:30,306 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-19 05:09:30,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-19 05:09:30,306 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2023-11-19 05:09:30,306 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2023-11-19 05:09:30,306 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_rx_interrupt [2023-11-19 05:09:30,306 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_rx_interrupt [2023-11-19 05:09:30,306 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_rx_lock_of_netfront_info [2023-11-19 05:09:30,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_rx_lock_of_netfront_info [2023-11-19 05:09:30,306 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2023-11-19 05:09:30,306 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2023-11-19 05:09:30,306 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_next [2023-11-19 05:09:30,307 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_next [2023-11-19 05:09:30,307 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_105 [2023-11-19 05:09:30,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_105 [2023-11-19 05:09:30,307 INFO L130 BoogieDeclarations]: Found specification of procedure store_rxbuf_max [2023-11-19 05:09:30,307 INFO L138 BoogieDeclarations]: Found implementation of procedure store_rxbuf_max [2023-11-19 05:09:30,307 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2023-11-19 05:09:30,307 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2023-11-19 05:09:30,307 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_len [2023-11-19 05:09:30,307 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_len [2023-11-19 05:09:30,307 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-11-19 05:09:30,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-11-19 05:09:30,307 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_interrupt [2023-11-19 05:09:30,307 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_interrupt [2023-11-19 05:09:30,307 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_123 [2023-11-19 05:09:30,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_123 [2023-11-19 05:09:30,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:09:30,308 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-11-19 05:09:30,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-11-19 05:09:30,308 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2023-11-19 05:09:30,308 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2023-11-19 05:09:30,308 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2023-11-19 05:09:30,308 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2023-11-19 05:09:30,308 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_free_evtchn [2023-11-19 05:09:30,310 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_free_evtchn [2023-11-19 05:09:30,310 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_tx_buf_gc [2023-11-19 05:09:30,310 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_tx_buf_gc [2023-11-19 05:09:31,087 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:09:31,092 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:09:31,329 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-19 05:09:37,354 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2023-11-19 05:09:37,586 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:09:38,818 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:09:38,818 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 05:09:38,835 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:09:38 BoogieIcfgContainer [2023-11-19 05:09:38,835 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:09:38,838 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:09:38,838 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:09:38,842 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:09:38,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:09:23" (1/3) ... [2023-11-19 05:09:38,843 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c07ef5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:09:38, skipping insertion in model container [2023-11-19 05:09:38,843 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:29" (2/3) ... [2023-11-19 05:09:38,844 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c07ef5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:09:38, skipping insertion in model container [2023-11-19 05:09:38,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:09:38" (3/3) ... [2023-11-19 05:09:38,845 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2023-11-19 05:09:38,873 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:09:38,873 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:09:38,982 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:09:38,991 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;@60b2c76d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:09:38,991 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:09:39,003 INFO L276 IsEmpty]: Start isEmpty. Operand has 1318 states, 748 states have (on average 1.2700534759358288) internal successors, (950), 770 states have internal predecessors, (950), 459 states have call successors, (459), 111 states have call predecessors, (459), 110 states have return successors, (454), 449 states have call predecessors, (454), 454 states have call successors, (454) [2023-11-19 05:09:39,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2023-11-19 05:09:39,080 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:09:39,081 INFO L195 NwaCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 29, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:09:39,082 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:09:39,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:09:39,090 INFO L85 PathProgramCache]: Analyzing trace with hash -830314801, now seen corresponding path program 1 times [2023-11-19 05:09:39,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:09:39,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193075551] [2023-11-19 05:09:39,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:09:39,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:09:39,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:09:40,381 INFO L134 CoverageAnalysis]: Checked inductivity of 3317 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3317 trivial. 0 not checked. [2023-11-19 05:09:40,382 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:09:40,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193075551] [2023-11-19 05:09:40,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193075551] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:09:40,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:09:40,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:09:40,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406222949] [2023-11-19 05:09:40,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:09:40,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:09:40,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:09:40,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:09:40,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:09:40,450 INFO L87 Difference]: Start difference. First operand has 1318 states, 748 states have (on average 1.2700534759358288) internal successors, (950), 770 states have internal predecessors, (950), 459 states have call successors, (459), 111 states have call predecessors, (459), 110 states have return successors, (454), 449 states have call predecessors, (454), 454 states have call successors, (454) Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2023-11-19 05:09:42,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:09:42,394 INFO L93 Difference]: Finished difference Result 3798 states and 5404 transitions. [2023-11-19 05:09:42,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:09:42,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) Word has length 395 [2023-11-19 05:09:42,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:09:42,445 INFO L225 Difference]: With dead ends: 3798 [2023-11-19 05:09:42,446 INFO L226 Difference]: Without dead ends: 2465 [2023-11-19 05:09:42,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:09:42,464 INFO L413 NwaCegarLoop]: 1598 mSDtfsCounter, 1705 mSDsluCounter, 1570 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1705 SdHoareTripleChecker+Valid, 3168 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:09:42,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1705 Valid, 3168 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-19 05:09:42,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2465 states. [2023-11-19 05:09:42,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2465 to 2461. [2023-11-19 05:09:42,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2461 states, 1428 states have (on average 1.265406162464986) internal successors, (1807), 1472 states have internal predecessors, (1807), 816 states have call successors, (816), 216 states have call predecessors, (816), 216 states have return successors, (816), 804 states have call predecessors, (816), 816 states have call successors, (816) [2023-11-19 05:09:42,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2461 states to 2461 states and 3439 transitions. [2023-11-19 05:09:42,786 INFO L78 Accepts]: Start accepts. Automaton has 2461 states and 3439 transitions. Word has length 395 [2023-11-19 05:09:42,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:09:42,792 INFO L495 AbstractCegarLoop]: Abstraction has 2461 states and 3439 transitions. [2023-11-19 05:09:42,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2023-11-19 05:09:42,793 INFO L276 IsEmpty]: Start isEmpty. Operand 2461 states and 3439 transitions. [2023-11-19 05:09:42,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2023-11-19 05:09:42,817 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:09:42,818 INFO L195 NwaCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 29, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:09:42,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:09:42,819 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:09:42,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:09:42,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1393891440, now seen corresponding path program 1 times [2023-11-19 05:09:42,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:09:42,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117821347] [2023-11-19 05:09:42,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:09:42,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:09:43,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:09:43,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3326 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3326 trivial. 0 not checked. [2023-11-19 05:09:43,535 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:09:43,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117821347] [2023-11-19 05:09:43,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117821347] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:09:43,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:09:43,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:09:43,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097174556] [2023-11-19 05:09:43,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:09:43,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:09:43,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:09:43,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:09:43,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:09:43,546 INFO L87 Difference]: Start difference. First operand 2461 states and 3439 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2023-11-19 05:09:45,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:09:45,410 INFO L93 Difference]: Finished difference Result 7203 states and 10046 transitions. [2023-11-19 05:09:45,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:09:45,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 399 [2023-11-19 05:09:45,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:09:45,457 INFO L225 Difference]: With dead ends: 7203 [2023-11-19 05:09:45,457 INFO L226 Difference]: Without dead ends: 4801 [2023-11-19 05:09:45,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:09:45,471 INFO L413 NwaCegarLoop]: 1550 mSDtfsCounter, 1640 mSDsluCounter, 1503 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1640 SdHoareTripleChecker+Valid, 3053 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:09:45,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1640 Valid, 3053 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-19 05:09:45,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4801 states. [2023-11-19 05:09:45,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4801 to 4797. [2023-11-19 05:09:45,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4797 states, 2790 states have (on average 1.2659498207885305) internal successors, (3532), 2880 states have internal predecessors, (3532), 1575 states have call successors, (1575), 431 states have call predecessors, (1575), 431 states have return successors, (1575), 1549 states have call predecessors, (1575), 1575 states have call successors, (1575) [2023-11-19 05:09:45,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4797 states to 4797 states and 6682 transitions. [2023-11-19 05:09:45,897 INFO L78 Accepts]: Start accepts. Automaton has 4797 states and 6682 transitions. Word has length 399 [2023-11-19 05:09:45,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:09:45,899 INFO L495 AbstractCegarLoop]: Abstraction has 4797 states and 6682 transitions. [2023-11-19 05:09:45,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2023-11-19 05:09:45,900 INFO L276 IsEmpty]: Start isEmpty. Operand 4797 states and 6682 transitions. [2023-11-19 05:09:45,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2023-11-19 05:09:45,927 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:09:45,928 INFO L195 NwaCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 29, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:09:45,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:09:45,928 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:09:45,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:09:45,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1025500955, now seen corresponding path program 1 times [2023-11-19 05:09:45,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:09:45,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650767933] [2023-11-19 05:09:45,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:09:45,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:09:46,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:09:46,665 INFO L134 CoverageAnalysis]: Checked inductivity of 3326 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3326 trivial. 0 not checked. [2023-11-19 05:09:46,665 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:09:46,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650767933] [2023-11-19 05:09:46,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650767933] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:09:46,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:09:46,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:09:46,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614614498] [2023-11-19 05:09:46,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:09:46,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:09:46,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:09:46,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:09:46,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:09:46,670 INFO L87 Difference]: Start difference. First operand 4797 states and 6682 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2023-11-19 05:09:48,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:09:48,827 INFO L93 Difference]: Finished difference Result 14147 states and 19679 transitions. [2023-11-19 05:09:48,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:09:48,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 400 [2023-11-19 05:09:48,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:09:48,913 INFO L225 Difference]: With dead ends: 14147 [2023-11-19 05:09:48,913 INFO L226 Difference]: Without dead ends: 9409 [2023-11-19 05:09:48,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:09:48,941 INFO L413 NwaCegarLoop]: 1757 mSDtfsCounter, 1639 mSDsluCounter, 1503 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1639 SdHoareTripleChecker+Valid, 3260 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:09:48,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1639 Valid, 3260 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-19 05:09:48,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9409 states. [2023-11-19 05:09:49,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9409 to 9405. [2023-11-19 05:09:49,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9405 states, 5480 states have (on average 1.264963503649635) internal successors, (6932), 5662 states have internal predecessors, (6932), 3065 states have call successors, (3065), 859 states have call predecessors, (3065), 859 states have return successors, (3065), 3011 states have call predecessors, (3065), 3065 states have call successors, (3065) [2023-11-19 05:09:49,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9405 states to 9405 states and 13062 transitions. [2023-11-19 05:09:49,670 INFO L78 Accepts]: Start accepts. Automaton has 9405 states and 13062 transitions. Word has length 400 [2023-11-19 05:09:49,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:09:49,675 INFO L495 AbstractCegarLoop]: Abstraction has 9405 states and 13062 transitions. [2023-11-19 05:09:49,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2023-11-19 05:09:49,676 INFO L276 IsEmpty]: Start isEmpty. Operand 9405 states and 13062 transitions. [2023-11-19 05:09:49,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2023-11-19 05:09:49,709 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:09:49,709 INFO L195 NwaCegarLoop]: trace histogram [31, 29, 29, 29, 29, 29, 29, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:09:49,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:09:49,710 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:09:49,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:09:49,711 INFO L85 PathProgramCache]: Analyzing trace with hash -160687213, now seen corresponding path program 1 times [2023-11-19 05:09:49,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:09:49,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300969768] [2023-11-19 05:09:49,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:09:49,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:09:49,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:09:50,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3401 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3398 trivial. 0 not checked. [2023-11-19 05:09:50,480 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:09:50,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300969768] [2023-11-19 05:09:50,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300969768] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:09:50,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:09:50,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:09:50,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592945251] [2023-11-19 05:09:50,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:09:50,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:09:50,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:09:50,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:09:50,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:09:50,484 INFO L87 Difference]: Start difference. First operand 9405 states and 13062 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2023-11-19 05:09:52,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:09:52,538 INFO L93 Difference]: Finished difference Result 19909 states and 27573 transitions. [2023-11-19 05:09:52,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:09:52,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) Word has length 415 [2023-11-19 05:09:52,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:09:52,621 INFO L225 Difference]: With dead ends: 19909 [2023-11-19 05:09:52,621 INFO L226 Difference]: Without dead ends: 10563 [2023-11-19 05:09:52,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:09:52,663 INFO L413 NwaCegarLoop]: 1640 mSDtfsCounter, 1502 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 3124 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:09:52,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 3124 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-19 05:09:52,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10563 states. [2023-11-19 05:09:53,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10563 to 10561. [2023-11-19 05:09:53,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10561 states, 6154 states have (on average 1.2619434514137147) internal successors, (7766), 6357 states have internal predecessors, (7766), 3414 states have call successors, (3414), 992 states have call predecessors, (3414), 992 states have return successors, (3414), 3355 states have call predecessors, (3414), 3414 states have call successors, (3414) [2023-11-19 05:09:53,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10561 states to 10561 states and 14594 transitions. [2023-11-19 05:09:53,340 INFO L78 Accepts]: Start accepts. Automaton has 10561 states and 14594 transitions. Word has length 415 [2023-11-19 05:09:53,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:09:53,341 INFO L495 AbstractCegarLoop]: Abstraction has 10561 states and 14594 transitions. [2023-11-19 05:09:53,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2023-11-19 05:09:53,341 INFO L276 IsEmpty]: Start isEmpty. Operand 10561 states and 14594 transitions. [2023-11-19 05:09:53,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2023-11-19 05:09:53,381 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:09:53,382 INFO L195 NwaCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 7, 7, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:09:53,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 05:09:53,382 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:09:53,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:09:53,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1132198271, now seen corresponding path program 1 times [2023-11-19 05:09:53,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:09:53,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797758274] [2023-11-19 05:09:53,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:09:53,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:09:53,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:09:53,949 INFO L134 CoverageAnalysis]: Checked inductivity of 3571 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3564 trivial. 0 not checked. [2023-11-19 05:09:53,949 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:09:53,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797758274] [2023-11-19 05:09:53,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797758274] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:09:53,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:09:53,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:09:53,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712760497] [2023-11-19 05:09:53,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:09:53,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:09:53,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:09:53,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:09:53,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:09:53,953 INFO L87 Difference]: Start difference. First operand 10561 states and 14594 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2023-11-19 05:09:56,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:09:56,332 INFO L93 Difference]: Finished difference Result 24643 states and 34055 transitions. [2023-11-19 05:09:56,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:09:56,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) Word has length 447 [2023-11-19 05:09:56,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:09:56,425 INFO L225 Difference]: With dead ends: 24643 [2023-11-19 05:09:56,425 INFO L226 Difference]: Without dead ends: 15209 [2023-11-19 05:09:56,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:09:56,478 INFO L413 NwaCegarLoop]: 2684 mSDtfsCounter, 1640 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1640 SdHoareTripleChecker+Valid, 4185 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-19 05:09:56,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1640 Valid, 4185 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-19 05:09:56,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15209 states. [2023-11-19 05:09:57,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15209 to 15205. [2023-11-19 05:09:57,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15205 states, 8860 states have (on average 1.262076749435666) internal successors, (11182), 9155 states have internal predecessors, (11182), 4908 states have call successors, (4908), 1436 states have call predecessors, (4908), 1436 states have return successors, (4908), 4821 states have call predecessors, (4908), 4908 states have call successors, (4908) [2023-11-19 05:09:57,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15205 states to 15205 states and 20998 transitions. [2023-11-19 05:09:57,917 INFO L78 Accepts]: Start accepts. Automaton has 15205 states and 20998 transitions. Word has length 447 [2023-11-19 05:09:57,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:09:57,918 INFO L495 AbstractCegarLoop]: Abstraction has 15205 states and 20998 transitions. [2023-11-19 05:09:57,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2023-11-19 05:09:57,919 INFO L276 IsEmpty]: Start isEmpty. Operand 15205 states and 20998 transitions. [2023-11-19 05:09:57,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2023-11-19 05:09:57,968 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:09:57,968 INFO L195 NwaCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 6, 6, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:09:57,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 05:09:57,969 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:09:57,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:09:57,970 INFO L85 PathProgramCache]: Analyzing trace with hash 843474874, now seen corresponding path program 1 times [2023-11-19 05:09:57,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:09:57,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698681173] [2023-11-19 05:09:57,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:09:57,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:09:58,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:09:58,552 INFO L134 CoverageAnalysis]: Checked inductivity of 3553 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3546 trivial. 0 not checked. [2023-11-19 05:09:58,552 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:09:58,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698681173] [2023-11-19 05:09:58,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698681173] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:09:58,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:09:58,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:09:58,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126530141] [2023-11-19 05:09:58,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:09:58,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:09:58,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:09:58,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:09:58,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:09:58,556 INFO L87 Difference]: Start difference. First operand 15205 states and 20998 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2023-11-19 05:10:00,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:10:00,827 INFO L93 Difference]: Finished difference Result 36176 states and 49955 transitions. [2023-11-19 05:10:00,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:10:00,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) Word has length 443 [2023-11-19 05:10:00,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:10:00,962 INFO L225 Difference]: With dead ends: 36176 [2023-11-19 05:10:00,962 INFO L226 Difference]: Without dead ends: 22098 [2023-11-19 05:10:01,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:10:01,018 INFO L413 NwaCegarLoop]: 2706 mSDtfsCounter, 1636 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1636 SdHoareTripleChecker+Valid, 4207 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:10:01,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1636 Valid, 4207 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-19 05:10:01,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22098 states. [2023-11-19 05:10:02,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22098 to 22094. [2023-11-19 05:10:02,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22094 states, 12871 states have (on average 1.2617512236811437) internal successors, (16240), 13304 states have internal predecessors, (16240), 7123 states have call successors, (7123), 2099 states have call predecessors, (7123), 2099 states have return successors, (7123), 6994 states have call predecessors, (7123), 7123 states have call successors, (7123) [2023-11-19 05:10:02,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22094 states to 22094 states and 30486 transitions. [2023-11-19 05:10:02,647 INFO L78 Accepts]: Start accepts. Automaton has 22094 states and 30486 transitions. Word has length 443 [2023-11-19 05:10:02,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:10:02,648 INFO L495 AbstractCegarLoop]: Abstraction has 22094 states and 30486 transitions. [2023-11-19 05:10:02,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2023-11-19 05:10:02,648 INFO L276 IsEmpty]: Start isEmpty. Operand 22094 states and 30486 transitions. [2023-11-19 05:10:02,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2023-11-19 05:10:02,841 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:10:02,841 INFO L195 NwaCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 7, 7, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:10:02,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 05:10:02,842 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:10:02,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:10:02,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1502947308, now seen corresponding path program 1 times [2023-11-19 05:10:02,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:10:02,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442655169] [2023-11-19 05:10:02,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:10:02,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:10:03,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:10:03,483 INFO L134 CoverageAnalysis]: Checked inductivity of 3571 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3564 trivial. 0 not checked. [2023-11-19 05:10:03,484 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:10:03,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442655169] [2023-11-19 05:10:03,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442655169] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:10:03,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:10:03,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:10:03,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019798441] [2023-11-19 05:10:03,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:10:03,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:10:03,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:10:03,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:10:03,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:10:03,488 INFO L87 Difference]: Start difference. First operand 22094 states and 30486 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55)