./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 30e01a73 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_034f7cdc-a7d2-4a7c-bc26-5a7ea48351f2/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034f7cdc-a7d2-4a7c-bc26-5a7ea48351f2/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034f7cdc-a7d2-4a7c-bc26-5a7ea48351f2/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034f7cdc-a7d2-4a7c-bc26-5a7ea48351f2/bin/utaipan-verify-mE87zJ7Ire/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_034f7cdc-a7d2-4a7c-bc26-5a7ea48351f2/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034f7cdc-a7d2-4a7c-bc26-5a7ea48351f2/bin/utaipan-verify-mE87zJ7Ire --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-30e01a7 [2023-11-23 21:15:15,305 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:15:15,428 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034f7cdc-a7d2-4a7c-bc26-5a7ea48351f2/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:15:15,434 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:15:15,434 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:15:15,464 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:15:15,465 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:15:15,466 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:15:15,466 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:15:15,467 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:15:15,468 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:15:15,468 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:15:15,469 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:15:15,469 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:15:15,470 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:15:15,471 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:15:15,474 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:15:15,475 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:15:15,476 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:15:15,476 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:15:15,477 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:15:15,478 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:15:15,479 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:15:15,479 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:15:15,480 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:15:15,481 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:15:15,481 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:15:15,482 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:15:15,483 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:15:15,483 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:15:15,484 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:15:15,485 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:15:15,485 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:15:15,486 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:15:15,486 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:15:15,487 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:15:15,488 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:15:15,488 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:15:15,489 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:15:15,490 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:15:15,490 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:15:15,491 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:15:15,492 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:15:15,492 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:15:15,493 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_034f7cdc-a7d2-4a7c-bc26-5a7ea48351f2/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034f7cdc-a7d2-4a7c-bc26-5a7ea48351f2/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2d7f6c194f04de54ba5a893678a720456a663ad567a49e51faf84a68b16d812 [2023-11-23 21:15:15,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:15:15,844 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:15:15,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:15:15,849 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:15:15,850 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:15:15,851 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034f7cdc-a7d2-4a7c-bc26-5a7ea48351f2/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2023-11-23 21:15:19,085 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:15:19,725 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:15:19,726 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034f7cdc-a7d2-4a7c-bc26-5a7ea48351f2/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2023-11-23 21:15:19,797 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034f7cdc-a7d2-4a7c-bc26-5a7ea48351f2/bin/utaipan-verify-mE87zJ7Ire/data/c834f3a78/f385ba9ed45b4f059b466e8fe46aed2e/FLAGd39edfec1 [2023-11-23 21:15:19,820 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034f7cdc-a7d2-4a7c-bc26-5a7ea48351f2/bin/utaipan-verify-mE87zJ7Ire/data/c834f3a78/f385ba9ed45b4f059b466e8fe46aed2e [2023-11-23 21:15:19,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:15:19,829 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:15:19,834 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:15:19,835 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:15:19,842 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:15:19,843 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:15:19" (1/1) ... [2023-11-23 21:15:19,844 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@345ccdc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:19, skipping insertion in model container [2023-11-23 21:15:19,845 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:15:19" (1/1) ... [2023-11-23 21:15:20,068 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:15:24,274 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_034f7cdc-a7d2-4a7c-bc26-5a7ea48351f2/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[415292,415305] [2023-11-23 21:15:24,278 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_034f7cdc-a7d2-4a7c-bc26-5a7ea48351f2/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[415437,415450] [2023-11-23 21:15:24,307 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:15:24,352 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:15:24,531 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] [2023-11-23 21:15:24,533 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] [2023-11-23 21:15:24,534 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("":); [6123] [2023-11-23 21:15:24,537 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] [2023-11-23 21:15:24,538 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] [2023-11-23 21:15:24,543 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] [2023-11-23 21:15:24,543 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] [2023-11-23 21:15:24,544 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] [2023-11-23 21:15:24,545 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] [2023-11-23 21:15:24,546 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] [2023-11-23 21:15:24,551 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] [2023-11-23 21:15:24,568 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] [2023-11-23 21:15:24,568 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [6926] [2023-11-23 21:15:24,607 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] [2023-11-23 21:15:24,607 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] [2023-11-23 21:15:24,609 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7656] [2023-11-23 21:15:24,610 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7661] [2023-11-23 21:15:24,610 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [7663] [2023-11-23 21:15:24,613 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] [2023-11-23 21:15:24,617 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("lfence": : : "memory"); [7745] [2023-11-23 21:15:24,619 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] [2023-11-23 21:15:24,621 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [7787] [2023-11-23 21:15:24,626 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] [2023-11-23 21:15:24,628 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] [2023-11-23 21:15:24,629 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] [2023-11-23 21:15:24,631 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] [2023-11-23 21:15:24,632 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] [2023-11-23 21:15:24,638 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] [2023-11-23 21:15:24,641 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] [2023-11-23 21:15:24,645 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [8259] [2023-11-23 21:15:24,645 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [8261] [2023-11-23 21:15:24,648 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] [2023-11-23 21:15:24,655 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] [2023-11-23 21:15:24,663 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] [2023-11-23 21:15:24,664 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] [2023-11-23 21:15:24,668 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] [2023-11-23 21:15:24,671 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("lfence": : : "memory"); [8840] [2023-11-23 21:15:24,676 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [8955] [2023-11-23 21:15:24,688 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("": "=r" (__ptr): "0" (np->stats)); [9027] [2023-11-23 21:15:24,701 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("": "=r" (__ptr): "0" (np->stats)); [9397] [2023-11-23 21:15:24,911 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_034f7cdc-a7d2-4a7c-bc26-5a7ea48351f2/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[415292,415305] [2023-11-23 21:15:24,912 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_034f7cdc-a7d2-4a7c-bc26-5a7ea48351f2/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[415437,415450] [2023-11-23 21:15:24,921 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:15:25,227 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:25,236 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:15:25,237 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:25 WrapperNode [2023-11-23 21:15:25,237 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:15:25,239 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:15:25,239 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:15:25,239 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:15:25,247 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:25" (1/1) ... [2023-11-23 21:15:25,392 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:25" (1/1) ... [2023-11-23 21:15:25,588 INFO L138 Inliner]: procedures = 562, calls = 2419, calls flagged for inlining = 267, calls inlined = 188, statements flattened = 4629 [2023-11-23 21:15:25,589 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:15:25,590 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:15:25,590 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:15:25,591 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:15:25,601 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:25" (1/1) ... [2023-11-23 21:15:25,601 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:25" (1/1) ... [2023-11-23 21:15:25,653 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:25" (1/1) ... [2023-11-23 21:15:25,654 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:25" (1/1) ... [2023-11-23 21:15:25,769 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:25" (1/1) ... [2023-11-23 21:15:25,789 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:25" (1/1) ... [2023-11-23 21:15:25,819 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:25" (1/1) ... [2023-11-23 21:15:25,849 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:25" (1/1) ... [2023-11-23 21:15:25,896 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:15:25,898 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:15:25,898 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:15:25,898 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:15:25,899 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:25" (1/1) ... [2023-11-23 21:15:25,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:15:25,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034f7cdc-a7d2-4a7c-bc26-5a7ea48351f2/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:15:25,937 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034f7cdc-a7d2-4a7c-bc26-5a7ea48351f2/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:15:25,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034f7cdc-a7d2-4a7c-bc26-5a7ea48351f2/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:15:25,985 INFO L130 BoogieDeclarations]: Found specification of procedure get_page [2023-11-23 21:15:25,985 INFO L138 BoogieDeclarations]: Found implementation of procedure get_page [2023-11-23 21:15:25,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-23 21:15:25,986 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-23 21:15:25,986 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2023-11-23 21:15:25,986 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2023-11-23 21:15:25,986 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2023-11-23 21:15:25,986 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2023-11-23 21:15:25,987 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 21:15:25,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 21:15:25,987 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_scanf [2023-11-23 21:15:25,987 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_scanf [2023-11-23 21:15:25,987 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_rx_lock_of_netfront_info [2023-11-23 21:15:25,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_rx_lock_of_netfront_info [2023-11-23 21:15:25,988 INFO L130 BoogieDeclarations]: Found specification of procedure bind_evtchn_to_irqhandler [2023-11-23 21:15:25,988 INFO L138 BoogieDeclarations]: Found implementation of procedure bind_evtchn_to_irqhandler [2023-11-23 21:15:25,988 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2023-11-23 21:15:25,989 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2023-11-23 21:15:25,989 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_tx_interrupt [2023-11-23 21:15:25,990 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_tx_interrupt [2023-11-23 21:15:25,990 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2023-11-23 21:15:25,990 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2023-11-23 21:15:25,991 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_grant_ring [2023-11-23 21:15:25,991 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_grant_ring [2023-11-23 21:15:25,991 INFO L130 BoogieDeclarations]: Found specification of procedure free_percpu [2023-11-23 21:15:25,991 INFO L138 BoogieDeclarations]: Found implementation of procedure free_percpu [2023-11-23 21:15:25,991 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_claim_grant_reference [2023-11-23 21:15:25,991 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_claim_grant_reference [2023-11-23 21:15:25,992 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_end_foreign_access [2023-11-23 21:15:25,992 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_end_foreign_access [2023-11-23 21:15:25,992 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_disconnect_backend [2023-11-23 21:15:25,992 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_disconnect_backend [2023-11-23 21:15:25,993 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-23 21:15:25,993 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-23 21:15:25,993 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_alloc_grant_references [2023-11-23 21:15:25,993 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_alloc_grant_references [2023-11-23 21:15:25,993 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-23 21:15:25,994 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_release_grant_reference [2023-11-23 21:15:25,994 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_release_grant_reference [2023-11-23 21:15:25,994 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-11-23 21:15:25,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-11-23 21:15:25,994 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2023-11-23 21:15:25,994 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2023-11-23 21:15:25,995 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-23 21:15:25,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-23 21:15:25,996 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_rxidx [2023-11-23 21:15:25,996 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_rxidx [2023-11-23 21:15:25,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:15:25,996 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2023-11-23 21:15:25,996 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2023-11-23 21:15:25,997 INFO L130 BoogieDeclarations]: Found specification of procedure pfn_to_mfn [2023-11-23 21:15:25,997 INFO L138 BoogieDeclarations]: Found implementation of procedure pfn_to_mfn [2023-11-23 21:15:25,997 INFO L130 BoogieDeclarations]: Found specification of procedure skb_entry_set_link [2023-11-23 21:15:25,997 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_entry_set_link [2023-11-23 21:15:25,997 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-23 21:15:25,998 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-23 21:15:25,998 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_free_grant_references [2023-11-23 21:15:25,998 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_free_grant_references [2023-11-23 21:15:25,998 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2023-11-23 21:15:25,999 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2023-11-23 21:15:25,999 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2023-11-23 21:15:25,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2023-11-23 21:15:25,999 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-23 21:15:25,999 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-23 21:15:25,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:15:26,000 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-23 21:15:26,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-11-23 21:15:26,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:15:26,001 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2023-11-23 21:15:26,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2023-11-23 21:15:26,001 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2023-11-23 21:15:26,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2023-11-23 21:15:26,002 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_124 [2023-11-23 21:15:26,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_124 [2023-11-23 21:15:26,003 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2023-11-23 21:15:26,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2023-11-23 21:15:26,003 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-11-23 21:15:26,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-11-23 21:15:26,003 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_get_rx_ref [2023-11-23 21:15:26,003 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_get_rx_ref [2023-11-23 21:15:26,004 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_tx_lock_of_netfront_info [2023-11-23 21:15:26,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_tx_lock_of_netfront_info [2023-11-23 21:15:26,004 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-23 21:15:26,004 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-23 21:15:26,005 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2023-11-23 21:15:26,005 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2023-11-23 21:15:26,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:15:26,006 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2023-11-23 21:15:26,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2023-11-23 21:15:26,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:15:26,006 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-23 21:15:26,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-23 21:15:26,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:15:26,007 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2023-11-23 21:15:26,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2023-11-23 21:15:26,008 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2023-11-23 21:15:26,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2023-11-23 21:15:26,008 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_grant_foreign_access_ref [2023-11-23 21:15:26,008 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_grant_foreign_access_ref [2023-11-23 21:15:26,008 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2023-11-23 21:15:26,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2023-11-23 21:15:26,008 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-23 21:15:26,009 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-23 21:15:26,009 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2023-11-23 21:15:26,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2023-11-23 21:15:26,013 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-11-23 21:15:26,014 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-11-23 21:15:26,014 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_dev_fatal [2023-11-23 21:15:26,014 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_dev_fatal [2023-11-23 21:15:26,015 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_get_rx_skb [2023-11-23 21:15:26,015 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_get_rx_skb [2023-11-23 21:15:26,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:15:26,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:15:26,016 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_netif_exit_20_2 [2023-11-23 21:15:26,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_netif_exit_20_2 [2023-11-23 21:15:26,023 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-23 21:15:26,023 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-23 21:15:26,023 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 21:15:26,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 21:15:26,024 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_release_tx_bufs [2023-11-23 21:15:26,024 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_release_tx_bufs [2023-11-23 21:15:26,024 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2023-11-23 21:15:26,025 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2023-11-23 21:15:26,025 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_write [2023-11-23 21:15:26,025 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_write [2023-11-23 21:15:26,025 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2023-11-23 21:15:26,025 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2023-11-23 21:15:26,025 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2023-11-23 21:15:26,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2023-11-23 21:15:26,026 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_transaction_end [2023-11-23 21:15:26,026 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_transaction_end [2023-11-23 21:15:26,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 21:15:26,026 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 21:15:26,026 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-23 21:15:26,026 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-23 21:15:26,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2023-11-23 21:15:26,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2023-11-23 21:15:26,093 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_alloc_evtchn [2023-11-23 21:15:26,093 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_alloc_evtchn [2023-11-23 21:15:26,093 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2023-11-23 21:15:26,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2023-11-23 21:15:26,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:15:26,093 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_printf [2023-11-23 21:15:26,093 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_printf [2023-11-23 21:15:26,093 INFO L130 BoogieDeclarations]: Found specification of procedure netfront_tx_slot_available [2023-11-23 21:15:26,094 INFO L138 BoogieDeclarations]: Found implementation of procedure netfront_tx_slot_available [2023-11-23 21:15:26,094 INFO L130 BoogieDeclarations]: Found specification of procedure notify_remote_via_irq [2023-11-23 21:15:26,094 INFO L138 BoogieDeclarations]: Found implementation of procedure notify_remote_via_irq [2023-11-23 21:15:26,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_tx_lock_of_netfront_info [2023-11-23 21:15:26,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_tx_lock_of_netfront_info [2023-11-23 21:15:26,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:15:26,094 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_tail [2023-11-23 21:15:26,094 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_tail [2023-11-23 21:15:26,094 INFO L130 BoogieDeclarations]: Found specification of procedure store_rxbuf_min [2023-11-23 21:15:26,094 INFO L138 BoogieDeclarations]: Found implementation of procedure store_rxbuf_min [2023-11-23 21:15:26,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_107 [2023-11-23 21:15:26,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_107 [2023-11-23 21:15:26,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:15:26,095 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 21:15:26,095 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 21:15:26,095 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2023-11-23 21:15:26,095 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2023-11-23 21:15:26,095 INFO L130 BoogieDeclarations]: Found specification of procedure add_id_to_freelist [2023-11-23 21:15:26,095 INFO L138 BoogieDeclarations]: Found implementation of procedure add_id_to_freelist [2023-11-23 21:15:26,095 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_alloc_rx_buffers [2023-11-23 21:15:26,095 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_alloc_rx_buffers [2023-11-23 21:15:26,095 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-23 21:15:26,095 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-23 21:15:26,095 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-11-23 21:15:26,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-11-23 21:15:26,096 INFO L130 BoogieDeclarations]: Found specification of procedure free_pages [2023-11-23 21:15:26,096 INFO L138 BoogieDeclarations]: Found implementation of procedure free_pages [2023-11-23 21:15:26,096 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_end_foreign_access_ref [2023-11-23 21:15:26,096 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_end_foreign_access_ref [2023-11-23 21:15:26,096 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2023-11-23 21:15:26,096 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2023-11-23 21:15:26,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_104 [2023-11-23 21:15:26,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_104 [2023-11-23 21:15:26,097 INFO L130 BoogieDeclarations]: Found specification of procedure unbind_from_irqhandler [2023-11-23 21:15:26,098 INFO L138 BoogieDeclarations]: Found implementation of procedure unbind_from_irqhandler [2023-11-23 21:15:26,098 INFO L130 BoogieDeclarations]: Found specification of procedure get_zeroed_page [2023-11-23 21:15:26,098 INFO L138 BoogieDeclarations]: Found implementation of procedure get_zeroed_page [2023-11-23 21:15:26,098 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_insert [2023-11-23 21:15:26,098 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_insert [2023-11-23 21:15:26,098 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2023-11-23 21:15:26,098 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2023-11-23 21:15:26,098 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-11-23 21:15:26,098 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-11-23 21:15:26,098 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_page [2023-11-23 21:15:26,098 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_page [2023-11-23 21:15:26,098 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_end_access [2023-11-23 21:15:26,099 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_end_access [2023-11-23 21:15:26,099 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-11-23 21:15:26,099 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-11-23 21:15:26,099 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-23 21:15:26,099 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-23 21:15:26,099 INFO L130 BoogieDeclarations]: Found specification of procedure skb_add_rx_frag [2023-11-23 21:15:26,099 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_add_rx_frag [2023-11-23 21:15:26,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:15:26,099 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 21:15:26,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 21:15:26,099 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2023-11-23 21:15:26,099 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2023-11-23 21:15:26,100 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_rx_interrupt [2023-11-23 21:15:26,100 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_rx_interrupt [2023-11-23 21:15:26,100 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_rx_lock_of_netfront_info [2023-11-23 21:15:26,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_rx_lock_of_netfront_info [2023-11-23 21:15:26,100 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2023-11-23 21:15:26,100 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2023-11-23 21:15:26,100 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_next [2023-11-23 21:15:26,100 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_next [2023-11-23 21:15:26,100 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_105 [2023-11-23 21:15:26,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_105 [2023-11-23 21:15:26,100 INFO L130 BoogieDeclarations]: Found specification of procedure store_rxbuf_max [2023-11-23 21:15:26,100 INFO L138 BoogieDeclarations]: Found implementation of procedure store_rxbuf_max [2023-11-23 21:15:26,101 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2023-11-23 21:15:26,101 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2023-11-23 21:15:26,101 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_len [2023-11-23 21:15:26,101 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_len [2023-11-23 21:15:26,101 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-11-23 21:15:26,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-11-23 21:15:26,101 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_interrupt [2023-11-23 21:15:26,101 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_interrupt [2023-11-23 21:15:26,101 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_123 [2023-11-23 21:15:26,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_123 [2023-11-23 21:15:26,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:15:26,101 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-11-23 21:15:26,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-11-23 21:15:26,102 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2023-11-23 21:15:26,102 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2023-11-23 21:15:26,102 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2023-11-23 21:15:26,102 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2023-11-23 21:15:26,102 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_free_evtchn [2023-11-23 21:15:26,102 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_free_evtchn [2023-11-23 21:15:26,102 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_tx_buf_gc [2023-11-23 21:15:26,102 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_tx_buf_gc [2023-11-23 21:15:26,860 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:15:26,871 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:15:27,094 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 21:15:30,175 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2023-11-23 21:15:30,438 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:15:31,706 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:15:31,706 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 21:15:31,709 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:15:31 BoogieIcfgContainer [2023-11-23 21:15:31,709 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:15:31,713 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:15:31,713 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:15:31,716 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:15:31,717 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:15:19" (1/3) ... [2023-11-23 21:15:31,719 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed50040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:15:31, skipping insertion in model container [2023-11-23 21:15:31,719 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:25" (2/3) ... [2023-11-23 21:15:31,719 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed50040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:15:31, skipping insertion in model container [2023-11-23 21:15:31,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:15:31" (3/3) ... [2023-11-23 21:15:31,721 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2023-11-23 21:15:31,743 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:15:31,743 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:15:31,853 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:15:31,861 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;@cd8e7d7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:15:31,861 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:15:31,874 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) [2023-11-23 21:15:31,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2023-11-23 21:15:31,942 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:31,944 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] [2023-11-23 21:15:31,944 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:15:31,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:31,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1411446685, now seen corresponding path program 1 times [2023-11-23 21:15:31,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:31,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565875499] [2023-11-23 21:15:31,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:31,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:32,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:33,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3317 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3317 trivial. 0 not checked. [2023-11-23 21:15:33,419 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:33,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565875499] [2023-11-23 21:15:33,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565875499] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:33,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:33,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:15:33,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410171201] [2023-11-23 21:15:33,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:33,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:15:33,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:33,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:15:33,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:15:33,469 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) [2023-11-23 21:15:35,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:35,288 INFO L93 Difference]: Finished difference Result 3798 states and 5404 transitions. [2023-11-23 21:15:35,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:15:35,291 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 [2023-11-23 21:15:35,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:35,326 INFO L225 Difference]: With dead ends: 3798 [2023-11-23 21:15:35,326 INFO L226 Difference]: Without dead ends: 2465 [2023-11-23 21:15:35,339 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 [2023-11-23 21:15:35,342 INFO L413 NwaCegarLoop]: 1598 mSDtfsCounter, 1705 mSDsluCounter, 1570 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:35,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1705 Valid, 3168 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-23 21:15:35,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2465 states. [2023-11-23 21:15:35,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2465 to 2461. [2023-11-23 21:15:35,630 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) [2023-11-23 21:15:35,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2461 states to 2461 states and 3439 transitions. [2023-11-23 21:15:35,658 INFO L78 Accepts]: Start accepts. Automaton has 2461 states and 3439 transitions. Word has length 395 [2023-11-23 21:15:35,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:35,661 INFO L495 AbstractCegarLoop]: Abstraction has 2461 states and 3439 transitions. [2023-11-23 21:15:35,661 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) [2023-11-23 21:15:35,661 INFO L276 IsEmpty]: Start isEmpty. Operand 2461 states and 3439 transitions. [2023-11-23 21:15:35,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2023-11-23 21:15:35,681 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:35,681 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] [2023-11-23 21:15:35,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:15:35,682 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:15:35,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:35,683 INFO L85 PathProgramCache]: Analyzing trace with hash -418071568, now seen corresponding path program 1 times [2023-11-23 21:15:35,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:35,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074344323] [2023-11-23 21:15:35,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:35,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:35,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:36,376 INFO L134 CoverageAnalysis]: Checked inductivity of 3326 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3326 trivial. 0 not checked. [2023-11-23 21:15:36,377 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:36,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074344323] [2023-11-23 21:15:36,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074344323] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:36,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:36,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:15:36,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769292129] [2023-11-23 21:15:36,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:36,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:15:36,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:36,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:15:36,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:15:36,388 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) [2023-11-23 21:15:38,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:38,099 INFO L93 Difference]: Finished difference Result 7203 states and 10046 transitions. [2023-11-23 21:15:38,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:15:38,100 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 [2023-11-23 21:15:38,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:38,142 INFO L225 Difference]: With dead ends: 7203 [2023-11-23 21:15:38,142 INFO L226 Difference]: Without dead ends: 4801 [2023-11-23 21:15:38,154 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 [2023-11-23 21:15:38,155 INFO L413 NwaCegarLoop]: 1550 mSDtfsCounter, 1640 mSDsluCounter, 1503 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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 [2023-11-23 21:15:38,156 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] [2023-11-23 21:15:38,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4801 states. [2023-11-23 21:15:38,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4801 to 4797. [2023-11-23 21:15:38,466 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) [2023-11-23 21:15:38,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4797 states to 4797 states and 6682 transitions. [2023-11-23 21:15:38,517 INFO L78 Accepts]: Start accepts. Automaton has 4797 states and 6682 transitions. Word has length 399 [2023-11-23 21:15:38,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:38,520 INFO L495 AbstractCegarLoop]: Abstraction has 4797 states and 6682 transitions. [2023-11-23 21:15:38,521 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) [2023-11-23 21:15:38,521 INFO L276 IsEmpty]: Start isEmpty. Operand 4797 states and 6682 transitions. [2023-11-23 21:15:38,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2023-11-23 21:15:38,544 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:38,544 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] [2023-11-23 21:15:38,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:15:38,545 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:15:38,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:38,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1358718474, now seen corresponding path program 1 times [2023-11-23 21:15:38,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:38,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571942693] [2023-11-23 21:15:38,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:38,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:38,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:39,143 INFO L134 CoverageAnalysis]: Checked inductivity of 3326 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3326 trivial. 0 not checked. [2023-11-23 21:15:39,143 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:39,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571942693] [2023-11-23 21:15:39,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571942693] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:39,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:39,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:15:39,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329972677] [2023-11-23 21:15:39,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:39,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:15:39,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:39,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:15:39,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:15:39,146 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) [2023-11-23 21:15:41,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:41,690 INFO L93 Difference]: Finished difference Result 14147 states and 19679 transitions. [2023-11-23 21:15:41,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:15:41,691 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 [2023-11-23 21:15:41,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:41,788 INFO L225 Difference]: With dead ends: 14147 [2023-11-23 21:15:41,788 INFO L226 Difference]: Without dead ends: 9409 [2023-11-23 21:15:41,816 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 [2023-11-23 21:15:41,820 INFO L413 NwaCegarLoop]: 1757 mSDtfsCounter, 1639 mSDsluCounter, 1503 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s 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, 1.9s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:41,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1639 Valid, 3260 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-23 21:15:41,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9409 states. [2023-11-23 21:15:42,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9409 to 9405. [2023-11-23 21:15:42,698 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) [2023-11-23 21:15:42,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9405 states to 9405 states and 13062 transitions. [2023-11-23 21:15:42,749 INFO L78 Accepts]: Start accepts. Automaton has 9405 states and 13062 transitions. Word has length 400 [2023-11-23 21:15:42,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:42,750 INFO L495 AbstractCegarLoop]: Abstraction has 9405 states and 13062 transitions. [2023-11-23 21:15:42,750 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) [2023-11-23 21:15:42,750 INFO L276 IsEmpty]: Start isEmpty. Operand 9405 states and 13062 transitions. [2023-11-23 21:15:42,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2023-11-23 21:15:42,784 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:42,785 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] [2023-11-23 21:15:42,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:15:42,785 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:15:42,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:42,786 INFO L85 PathProgramCache]: Analyzing trace with hash 845937563, now seen corresponding path program 1 times [2023-11-23 21:15:42,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:42,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737301127] [2023-11-23 21:15:42,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:42,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:43,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:43,493 INFO L134 CoverageAnalysis]: Checked inductivity of 3401 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3398 trivial. 0 not checked. [2023-11-23 21:15:43,493 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:43,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737301127] [2023-11-23 21:15:43,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737301127] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:43,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:43,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:15:43,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436593283] [2023-11-23 21:15:43,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:43,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:15:43,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:43,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:15:43,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:15:43,506 INFO L87 Difference]: Start difference. First operand 9405 states and 13062 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2023-11-23 21:15:46,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:46,027 INFO L93 Difference]: Finished difference Result 19909 states and 27573 transitions. [2023-11-23 21:15:46,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:15:46,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 414 [2023-11-23 21:15:46,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:46,127 INFO L225 Difference]: With dead ends: 19909 [2023-11-23 21:15:46,128 INFO L226 Difference]: Without dead ends: 10563 [2023-11-23 21:15:46,170 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 [2023-11-23 21:15:46,173 INFO L413 NwaCegarLoop]: 1640 mSDtfsCounter, 1502 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s 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, 1.9s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:46,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 3124 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-23 21:15:46,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10563 states. [2023-11-23 21:15:46,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10563 to 10561. [2023-11-23 21:15:46,933 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) [2023-11-23 21:15:46,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10561 states to 10561 states and 14594 transitions. [2023-11-23 21:15:46,989 INFO L78 Accepts]: Start accepts. Automaton has 10561 states and 14594 transitions. Word has length 414 [2023-11-23 21:15:46,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:46,990 INFO L495 AbstractCegarLoop]: Abstraction has 10561 states and 14594 transitions. [2023-11-23 21:15:46,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2023-11-23 21:15:46,991 INFO L276 IsEmpty]: Start isEmpty. Operand 10561 states and 14594 transitions. [2023-11-23 21:15:47,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2023-11-23 21:15:47,037 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:47,037 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] [2023-11-23 21:15:47,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:15:47,038 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:15:47,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:47,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1436432819, now seen corresponding path program 1 times [2023-11-23 21:15:47,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:47,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97597090] [2023-11-23 21:15:47,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:47,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:47,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:47,575 INFO L134 CoverageAnalysis]: Checked inductivity of 3553 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3546 trivial. 0 not checked. [2023-11-23 21:15:47,576 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:47,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97597090] [2023-11-23 21:15:47,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97597090] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:47,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:47,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:15:47,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981197596] [2023-11-23 21:15:47,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:47,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:15:47,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:47,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:15:47,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:15:47,580 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, (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) [2023-11-23 21:15:50,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:50,798 INFO L93 Difference]: Finished difference Result 24621 states and 34022 transitions. [2023-11-23 21:15:50,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:15:50,799 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 [2023-11-23 21:15:50,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:50,892 INFO L225 Difference]: With dead ends: 24621 [2023-11-23 21:15:50,895 INFO L226 Difference]: Without dead ends: 15187 [2023-11-23 21:15:50,940 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 [2023-11-23 21:15:50,941 INFO L413 NwaCegarLoop]: 2688 mSDtfsCounter, 1636 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1636 SdHoareTripleChecker+Valid, 4189 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:50,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1636 Valid, 4189 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-23 21:15:50,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15187 states. [2023-11-23 21:15:51,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15187 to 15183. [2023-11-23 21:15:51,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15183 states, 8845 states have (on average 1.2618428490672697) internal successors, (11161), 9140 states have internal predecessors, (11161), 4902 states have call successors, (4902), 1435 states have call predecessors, (4902), 1435 states have return successors, (4902), 4815 states have call predecessors, (4902), 4902 states have call successors, (4902) [2023-11-23 21:15:52,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15183 states to 15183 states and 20965 transitions. [2023-11-23 21:15:52,068 INFO L78 Accepts]: Start accepts. Automaton has 15183 states and 20965 transitions. Word has length 443 [2023-11-23 21:15:52,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:52,070 INFO L495 AbstractCegarLoop]: Abstraction has 15183 states and 20965 transitions. [2023-11-23 21:15:52,071 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) [2023-11-23 21:15:52,071 INFO L276 IsEmpty]: Start isEmpty. Operand 15183 states and 20965 transitions. [2023-11-23 21:15:52,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2023-11-23 21:15:52,111 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:52,111 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] [2023-11-23 21:15:52,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:15:52,112 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:15:52,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:52,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1250280062, now seen corresponding path program 1 times [2023-11-23 21:15:52,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:52,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861642263] [2023-11-23 21:15:52,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:52,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:52,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:52,613 INFO L134 CoverageAnalysis]: Checked inductivity of 3571 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3564 trivial. 0 not checked. [2023-11-23 21:15:52,613 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:52,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861642263] [2023-11-23 21:15:52,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861642263] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:52,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:52,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:15:52,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624494125] [2023-11-23 21:15:52,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:52,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:15:52,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:52,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:15:52,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:15:52,617 INFO L87 Difference]: Start difference. First operand 15183 states and 20965 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) [2023-11-23 21:15:55,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:55,493 INFO L93 Difference]: Finished difference Result 36154 states and 49922 transitions. [2023-11-23 21:15:55,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:15:55,498 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 [2023-11-23 21:15:55,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:55,604 INFO L225 Difference]: With dead ends: 36154 [2023-11-23 21:15:55,605 INFO L226 Difference]: Without dead ends: 22098 [2023-11-23 21:15:55,654 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 [2023-11-23 21:15:55,655 INFO L413 NwaCegarLoop]: 2684 mSDtfsCounter, 1640 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s 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, 2.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:55,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1640 Valid, 4185 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-23 21:15:55,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22098 states. [2023-11-23 21:15:57,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22098 to 22094. [2023-11-23 21:15:57,030 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) [2023-11-23 21:15:57,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22094 states to 22094 states and 30486 transitions. [2023-11-23 21:15:57,144 INFO L78 Accepts]: Start accepts. Automaton has 22094 states and 30486 transitions. Word has length 447 [2023-11-23 21:15:57,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:57,145 INFO L495 AbstractCegarLoop]: Abstraction has 22094 states and 30486 transitions. [2023-11-23 21:15:57,145 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) [2023-11-23 21:15:57,145 INFO L276 IsEmpty]: Start isEmpty. Operand 22094 states and 30486 transitions. [2023-11-23 21:15:57,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2023-11-23 21:15:57,192 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:57,193 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] [2023-11-23 21:15:57,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 21:15:57,193 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:15:57,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:57,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1179425496, now seen corresponding path program 1 times [2023-11-23 21:15:57,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:57,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23851738] [2023-11-23 21:15:57,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:57,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:57,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:57,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3571 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3564 trivial. 0 not checked. [2023-11-23 21:15:57,676 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:57,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23851738] [2023-11-23 21:15:57,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23851738] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:57,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:57,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:15:57,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165244627] [2023-11-23 21:15:57,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:57,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:15:57,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:57,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:15:57,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:15:57,680 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)