./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_e87b093b-a6a5-4901-a231-9cd0ddc99eba/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e87b093b-a6a5-4901-a231-9cd0ddc99eba/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e87b093b-a6a5-4901-a231-9cd0ddc99eba/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e87b093b-a6a5-4901-a231-9cd0ddc99eba/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e87b093b-a6a5-4901-a231-9cd0ddc99eba/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e87b093b-a6a5-4901-a231-9cd0ddc99eba/bin/utaipan-verify-nQ1chXbOIh --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 bc38af6d85a1ea18be4ba0c188eed765e9a84460b9b23510e792660c4b3625d7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:40:48,472 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:40:48,535 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e87b093b-a6a5-4901-a231-9cd0ddc99eba/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 15:40:48,540 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:40:48,541 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:40:48,568 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:40:48,568 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:40:48,569 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:40:48,570 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:40:48,570 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:40:48,571 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:40:48,571 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:40:48,572 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:40:48,572 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:40:48,573 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:40:48,573 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:40:48,574 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:40:48,574 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:40:48,575 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:40:48,575 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:40:48,576 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:40:48,576 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:40:48,577 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:40:48,578 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:40:48,578 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:40:48,578 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:40:48,579 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:40:48,579 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:40:48,580 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:40:48,580 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:40:48,580 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:40:48,581 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:40:48,581 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:40:48,581 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:40:48,582 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:40:48,582 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:40:48,582 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:40:48,582 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:40:48,582 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:40:48,583 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:40:48,583 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:40:48,583 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:40:48,583 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:40:48,584 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:40:48,584 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_e87b093b-a6a5-4901-a231-9cd0ddc99eba/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e87b093b-a6a5-4901-a231-9cd0ddc99eba/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bc38af6d85a1ea18be4ba0c188eed765e9a84460b9b23510e792660c4b3625d7 [2023-12-02 15:40:48,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:40:48,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:40:48,837 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:40:48,838 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:40:48,839 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:40:48,840 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e87b093b-a6a5-4901-a231-9cd0ddc99eba/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i [2023-12-02 15:40:51,869 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:40:52,432 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:40:52,432 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e87b093b-a6a5-4901-a231-9cd0ddc99eba/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i [2023-12-02 15:40:52,488 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e87b093b-a6a5-4901-a231-9cd0ddc99eba/bin/utaipan-verify-nQ1chXbOIh/data/2ec638c49/71e17d89ea6b4ad683a8e819fceb165d/FLAG04f16e205 [2023-12-02 15:40:52,502 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e87b093b-a6a5-4901-a231-9cd0ddc99eba/bin/utaipan-verify-nQ1chXbOIh/data/2ec638c49/71e17d89ea6b4ad683a8e819fceb165d [2023-12-02 15:40:52,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:40:52,507 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:40:52,508 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:40:52,508 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:40:52,514 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:40:52,514 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:40:52" (1/1) ... [2023-12-02 15:40:52,515 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@585c81af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:40:52, skipping insertion in model container [2023-12-02 15:40:52,516 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:40:52" (1/1) ... [2023-12-02 15:40:52,791 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:40:57,880 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_e87b093b-a6a5-4901-a231-9cd0ddc99eba/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i[552482,552495] [2023-12-02 15:40:57,885 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_e87b093b-a6a5-4901-a231-9cd0ddc99eba/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i[552651,552664] [2023-12-02 15:40:57,886 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_e87b093b-a6a5-4901-a231-9cd0ddc99eba/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i[552818,552831] [2023-12-02 15:40:57,887 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_e87b093b-a6a5-4901-a231-9cd0ddc99eba/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i[552986,552999] [2023-12-02 15:40:57,924 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:40:57,995 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:40:58,185 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/ethernet/oki-semi/pch_gbe/pch_gbe_param.c"), "i" (269), "i" (12UL)); [7882-7883] [2023-12-02 15:40:58,203 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/ethernet/oki-semi/pch_gbe/pch_gbe_param.c"), "i" (435), "i" (12UL)); [8408-8409] [2023-12-02 15:40:58,219 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"); [8883] [2023-12-02 15:40:58,220 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)); [8890] [2023-12-02 15:40:58,220 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("":); [8897] [2023-12-02 15:40:58,221 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/f860c18/linux-kernel-locking-spinlock/lkbce/arch/x86/include/asm/paravirt.h"), "i" (804), "i" (12UL)); [8949-8950] [2023-12-02 15:40:58,222 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"); [8955-8957] [2023-12-02 15:40:58,222 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("rep; nop": : : "memory"); [8971] [2023-12-02 15:40:58,223 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)); [8994] [2023-12-02 15:40:58,223 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("":); [9001] [2023-12-02 15:40:58,227 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ (" addl %1,%0\n adcl $0xffff,%0": "=r" (sum): "r" (sum << 16), "0" (sum & 4294901760U)); [9236] [2023-12-02 15:40:58,227 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ (" addl %1, %0\n adcl %2, %0\n adcl %3, %0\n adcl $0, %0\n": "=r" (sum): "g" (daddr), "g" (saddr), "g" (((int )len + (int )proto) << 8), "0" (sum)); [9244-9245] [2023-12-02 15:40:58,231 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/asm-generic/dma-mapping-common.h"), "i" (19), "i" (12UL)); [9318-9319] [2023-12-02 15:40:58,233 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/asm-generic/dma-mapping-common.h"), "i" (36), "i" (12UL)); [9352-9353] [2023-12-02 15:40:58,241 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)); [9680-9681] [2023-12-02 15:40:58,241 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [9687] [2023-12-02 15:40:58,592 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_e87b093b-a6a5-4901-a231-9cd0ddc99eba/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i[552482,552495] [2023-12-02 15:40:58,593 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_e87b093b-a6a5-4901-a231-9cd0ddc99eba/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i[552651,552664] [2023-12-02 15:40:58,593 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_e87b093b-a6a5-4901-a231-9cd0ddc99eba/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i[552818,552831] [2023-12-02 15:40:58,594 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_e87b093b-a6a5-4901-a231-9cd0ddc99eba/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i[552986,552999] [2023-12-02 15:40:58,612 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:40:59,093 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:40:59,094 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:40:59 WrapperNode [2023-12-02 15:40:59,094 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:40:59,095 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:40:59,095 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:40:59,095 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:40:59,105 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:40:59" (1/1) ... [2023-12-02 15:40:59,253 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:40:59" (1/1) ... [2023-12-02 15:40:59,680 INFO L138 Inliner]: procedures = 703, calls = 6707, calls flagged for inlining = 366, calls inlined = 324, statements flattened = 12508 [2023-12-02 15:40:59,681 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:40:59,682 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:40:59,682 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:40:59,683 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:40:59,695 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:40:59" (1/1) ... [2023-12-02 15:40:59,696 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:40:59" (1/1) ... [2023-12-02 15:40:59,756 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:40:59" (1/1) ... [2023-12-02 15:40:59,761 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:40:59" (1/1) ... [2023-12-02 15:41:00,144 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:40:59" (1/1) ... [2023-12-02 15:41:00,189 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:40:59" (1/1) ... [2023-12-02 15:41:00,287 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:40:59" (1/1) ... [2023-12-02 15:41:00,319 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:40:59" (1/1) ... [2023-12-02 15:41:00,447 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:41:00,449 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:41:00,449 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:41:00,449 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:41:00,450 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:40:59" (1/1) ... [2023-12-02 15:41:00,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:41:00,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e87b093b-a6a5-4901-a231-9cd0ddc99eba/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:41:00,486 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e87b093b-a6a5-4901-a231-9cd0ddc99eba/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:41:00,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e87b093b-a6a5-4901-a231-9cd0ddc99eba/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:41:00,528 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_93 [2023-12-02 15:41:00,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_93 [2023-12-02 15:41:00,528 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2023-12-02 15:41:00,529 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2023-12-02 15:41:00,529 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_irq_disable [2023-12-02 15:41:00,529 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_irq_disable [2023-12-02 15:41:00,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-12-02 15:41:00,530 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-12-02 15:41:00,530 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2023-12-02 15:41:00,530 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2023-12-02 15:41:00,530 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_80 [2023-12-02 15:41:00,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_80 [2023-12-02 15:41:00,530 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_intr [2023-12-02 15:41:00,531 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_intr [2023-12-02 15:41:00,531 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2023-12-02 15:41:00,531 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2023-12-02 15:41:00,531 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-12-02 15:41:00,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-12-02 15:41:00,532 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_minnow_platform_init [2023-12-02 15:41:00,532 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_minnow_platform_init [2023-12-02 15:41:00,532 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_open [2023-12-02 15:41:00,532 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_open [2023-12-02 15:41:00,532 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2023-12-02 15:41:00,532 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2023-12-02 15:41:00,533 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-12-02 15:41:00,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-12-02 15:41:00,533 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_reinit_locked [2023-12-02 15:41:00,533 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_reinit_locked [2023-12-02 15:41:00,533 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_hal_power_up_phy [2023-12-02 15:41:00,533 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_hal_power_up_phy [2023-12-02 15:41:00,533 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_setup_tx_resources [2023-12-02 15:41:00,534 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_setup_tx_resources [2023-12-02 15:41:00,534 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2023-12-02 15:41:00,534 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2023-12-02 15:41:00,534 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2023-12-02 15:41:00,534 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2023-12-02 15:41:00,534 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2023-12-02 15:41:00,535 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2023-12-02 15:41:00,535 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_netpoll [2023-12-02 15:41:00,535 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_netpoll [2023-12-02 15:41:00,535 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_plat_init_hw [2023-12-02 15:41:00,535 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_plat_init_hw [2023-12-02 15:41:00,535 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_free_rx_resources [2023-12-02 15:41:00,536 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_free_rx_resources [2023-12-02 15:41:00,536 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_free_tx_resources [2023-12-02 15:41:00,536 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_free_tx_resources [2023-12-02 15:41:00,536 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2023-12-02 15:41:00,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2023-12-02 15:41:00,536 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_pch_gbe_exit_module_17_2 [2023-12-02 15:41:00,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_pch_gbe_exit_module_17_2 [2023-12-02 15:41:00,537 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2023-12-02 15:41:00,537 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2023-12-02 15:41:00,537 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2023-12-02 15:41:00,537 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2023-12-02 15:41:00,537 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-12-02 15:41:00,538 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-12-02 15:41:00,538 INFO L130 BoogieDeclarations]: Found specification of procedure dma_zalloc_coherent [2023-12-02 15:41:00,538 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_zalloc_coherent [2023-12-02 15:41:00,538 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_netdev_dbg [2023-12-02 15:41:00,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_netdev_dbg [2023-12-02 15:41:00,538 INFO L130 BoogieDeclarations]: Found specification of procedure pch_set_station_address [2023-12-02 15:41:00,539 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_set_station_address [2023-12-02 15:41:00,539 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2023-12-02 15:41:00,539 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2023-12-02 15:41:00,539 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-12-02 15:41:00,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-12-02 15:41:00,539 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_mdio_write [2023-12-02 15:41:00,540 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_mdio_write [2023-12-02 15:41:00,540 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-12-02 15:41:00,540 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-12-02 15:41:00,540 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2023-12-02 15:41:00,540 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2023-12-02 15:41:00,540 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2023-12-02 15:41:00,541 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2023-12-02 15:41:00,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-12-02 15:41:00,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-12-02 15:41:00,541 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-12-02 15:41:00,541 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-12-02 15:41:00,541 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2023-12-02 15:41:00,542 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2023-12-02 15:41:00,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 15:41:00,542 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_phy_power_up [2023-12-02 15:41:00,542 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_phy_power_up [2023-12-02 15:41:00,542 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2023-12-02 15:41:00,542 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2023-12-02 15:41:00,542 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_resume [2023-12-02 15:41:00,543 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_resume [2023-12-02 15:41:00,543 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-12-02 15:41:00,543 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-12-02 15:41:00,543 INFO L130 BoogieDeclarations]: Found specification of procedure pch_ch_event_write [2023-12-02 15:41:00,543 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_ch_event_write [2023-12-02 15:41:00,543 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_consistent_dma_mask [2023-12-02 15:41:00,544 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_consistent_dma_mask [2023-12-02 15:41:00,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-12-02 15:41:00,544 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-12-02 15:41:00,544 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-12-02 15:41:00,544 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2023-12-02 15:41:00,544 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2023-12-02 15:41:00,545 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2023-12-02 15:41:00,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2023-12-02 15:41:00,545 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-12-02 15:41:00,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-12-02 15:41:00,545 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_enable_dma_rx [2023-12-02 15:41:00,545 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_enable_dma_rx [2023-12-02 15:41:00,545 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_configure_rx [2023-12-02 15:41:00,546 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_configure_rx [2023-12-02 15:41:00,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 15:41:00,546 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_wait_clr_bit [2023-12-02 15:41:00,546 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_wait_clr_bit [2023-12-02 15:41:00,546 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-12-02 15:41:00,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-12-02 15:41:00,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 15:41:00,547 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2023-12-02 15:41:00,547 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2023-12-02 15:41:00,547 INFO L130 BoogieDeclarations]: Found specification of procedure vzalloc [2023-12-02 15:41:00,547 INFO L138 BoogieDeclarations]: Found implementation of procedure vzalloc [2023-12-02 15:41:00,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-12-02 15:41:00,548 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-12-02 15:41:00,548 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_remove [2023-12-02 15:41:00,548 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_remove [2023-12-02 15:41:00,548 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2023-12-02 15:41:00,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2023-12-02 15:41:00,548 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2023-12-02 15:41:00,548 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2023-12-02 15:41:00,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2023-12-02 15:41:00,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2023-12-02 15:41:00,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2023-12-02 15:41:00,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2023-12-02 15:41:00,549 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2023-12-02 15:41:00,549 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2023-12-02 15:41:00,550 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_mac_force_mac_fc [2023-12-02 15:41:00,550 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_mac_force_mac_fc [2023-12-02 15:41:00,550 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_suspend [2023-12-02 15:41:00,550 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_suspend [2023-12-02 15:41:00,550 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2023-12-02 15:41:00,550 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2023-12-02 15:41:00,551 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2023-12-02 15:41:00,551 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2023-12-02 15:41:00,551 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2023-12-02 15:41:00,551 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2023-12-02 15:41:00,551 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_set_value [2023-12-02 15:41:00,551 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_set_value [2023-12-02 15:41:00,552 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-12-02 15:41:00,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-12-02 15:41:00,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 15:41:00,552 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2023-12-02 15:41:00,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2023-12-02 15:41:00,552 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2023-12-02 15:41:00,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2023-12-02 15:41:00,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2023-12-02 15:41:00,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2023-12-02 15:41:00,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_5 [2023-12-02 15:41:00,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_5 [2023-12-02 15:41:00,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2023-12-02 15:41:00,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2023-12-02 15:41:00,554 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2023-12-02 15:41:00,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2023-12-02 15:41:00,554 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2023-12-02 15:41:00,554 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2023-12-02 15:41:00,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:41:00,554 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2023-12-02 15:41:00,554 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2023-12-02 15:41:00,555 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-12-02 15:41:00,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-12-02 15:41:00,555 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-12-02 15:41:00,555 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-12-02 15:41:00,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 15:41:00,555 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-12-02 15:41:00,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-12-02 15:41:00,556 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2023-12-02 15:41:00,556 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2023-12-02 15:41:00,556 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-12-02 15:41:00,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-12-02 15:41:00,556 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2023-12-02 15:41:00,556 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2023-12-02 15:41:00,556 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kzalloc [2023-12-02 15:41:00,557 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kzalloc [2023-12-02 15:41:00,557 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2023-12-02 15:41:00,557 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2023-12-02 15:41:00,557 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_mac_set_wol_event [2023-12-02 15:41:00,557 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_mac_set_wol_event [2023-12-02 15:41:00,557 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-12-02 15:41:00,557 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-12-02 15:41:00,558 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_mac_ctrl_miim [2023-12-02 15:41:00,558 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_mac_ctrl_miim [2023-12-02 15:41:00,558 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2023-12-02 15:41:00,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2023-12-02 15:41:00,558 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_get_regs_len [2023-12-02 15:41:00,558 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_get_regs_len [2023-12-02 15:41:00,558 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-12-02 15:41:00,559 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-12-02 15:41:00,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:41:00,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:41:00,559 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_alloc_rx_buffers [2023-12-02 15:41:00,559 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_alloc_rx_buffers [2023-12-02 15:41:00,559 INFO L130 BoogieDeclarations]: Found specification of procedure __pch_gbe_suspend [2023-12-02 15:41:00,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __pch_gbe_suspend [2023-12-02 15:41:00,560 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2023-12-02 15:41:00,560 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2023-12-02 15:41:00,560 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_plat_get_bus_info [2023-12-02 15:41:00,560 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_plat_get_bus_info [2023-12-02 15:41:00,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-12-02 15:41:00,560 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-12-02 15:41:00,560 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_phy_power_down [2023-12-02 15:41:00,561 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_phy_power_down [2023-12-02 15:41:00,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-12-02 15:41:00,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-12-02 15:41:00,561 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-12-02 15:41:00,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-12-02 15:41:00,561 INFO L130 BoogieDeclarations]: Found specification of procedure csum_tcpudp_magic [2023-12-02 15:41:00,561 INFO L138 BoogieDeclarations]: Found implementation of procedure csum_tcpudp_magic [2023-12-02 15:41:00,562 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-12-02 15:41:00,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-12-02 15:41:00,562 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_update_stats [2023-12-02 15:41:00,562 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_update_stats [2023-12-02 15:41:00,562 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2023-12-02 15:41:00,562 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2023-12-02 15:41:00,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_try [2023-12-02 15:41:00,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_try [2023-12-02 15:41:00,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2023-12-02 15:41:00,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2023-12-02 15:41:00,563 INFO L130 BoogieDeclarations]: Found specification of procedure skb_checksum [2023-12-02 15:41:00,563 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_checksum [2023-12-02 15:41:00,563 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_mdio_read [2023-12-02 15:41:00,564 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_mdio_read [2023-12-02 15:41:00,564 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_clean_rx_ring [2023-12-02 15:41:00,564 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_clean_rx_ring [2023-12-02 15:41:00,564 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2023-12-02 15:41:00,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2023-12-02 15:41:00,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_tx_lock_of_pch_gbe_tx_ring [2023-12-02 15:41:00,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_tx_lock_of_pch_gbe_tx_ring [2023-12-02 15:41:00,565 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_up [2023-12-02 15:41:00,565 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_up [2023-12-02 15:41:00,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 15:41:00,565 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 15:41:00,565 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-12-02 15:41:00,565 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-12-02 15:41:00,565 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2023-12-02 15:41:00,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2023-12-02 15:41:00,566 INFO L130 BoogieDeclarations]: Found specification of procedure mii_ethtool_gset [2023-12-02 15:41:00,566 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_ethtool_gset [2023-12-02 15:41:00,566 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_clean_tx_ring [2023-12-02 15:41:00,566 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_clean_tx_ring [2023-12-02 15:41:00,566 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_reset [2023-12-02 15:41:00,566 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_reset [2023-12-02 15:41:00,567 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2023-12-02 15:41:00,567 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2023-12-02 15:41:00,567 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies [2023-12-02 15:41:00,567 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies [2023-12-02 15:41:00,567 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev_stop_14_2 [2023-12-02 15:41:00,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev_stop_14_2 [2023-12-02 15:41:00,567 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_stop [2023-12-02 15:41:00,568 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_stop [2023-12-02 15:41:00,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 15:41:00,568 INFO L130 BoogieDeclarations]: Found specification of procedure ns_to_ktime [2023-12-02 15:41:00,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_to_ktime [2023-12-02 15:41:00,568 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2023-12-02 15:41:00,568 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2023-12-02 15:41:00,568 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2023-12-02 15:41:00,569 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2023-12-02 15:41:00,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 15:41:00,569 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_io_resume [2023-12-02 15:41:00,569 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_io_resume [2023-12-02 15:41:00,569 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~s32~0 [2023-12-02 15:41:00,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~s32~0 [2023-12-02 15:41:00,570 INFO L130 BoogieDeclarations]: Found specification of procedure pch_ch_event_read [2023-12-02 15:41:00,570 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_ch_event_read [2023-12-02 15:41:00,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 15:41:00,570 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-12-02 15:41:00,570 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-12-02 15:41:00,570 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-12-02 15:41:00,570 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-12-02 15:41:00,571 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2023-12-02 15:41:00,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2023-12-02 15:41:00,571 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2023-12-02 15:41:00,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2023-12-02 15:41:00,571 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-12-02 15:41:00,571 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-12-02 15:41:00,571 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_nway_reset [2023-12-02 15:41:00,572 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_nway_reset [2023-12-02 15:41:00,572 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-12-02 15:41:00,572 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-12-02 15:41:00,572 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2023-12-02 15:41:00,572 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2023-12-02 15:41:00,572 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_irq_enable [2023-12-02 15:41:00,572 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_irq_enable [2023-12-02 15:41:00,573 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-12-02 15:41:00,573 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-12-02 15:41:00,573 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_phy_hw_reset [2023-12-02 15:41:00,573 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_phy_hw_reset [2023-12-02 15:41:00,573 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_tx_timeout [2023-12-02 15:41:00,573 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_tx_timeout [2023-12-02 15:41:00,573 INFO L130 BoogieDeclarations]: Found specification of procedure mii_link_ok [2023-12-02 15:41:00,574 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_link_ok [2023-12-02 15:41:00,574 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-12-02 15:41:00,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-12-02 15:41:00,574 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-12-02 15:41:00,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-12-02 15:41:00,574 INFO L130 BoogieDeclarations]: Found specification of procedure mii_ethtool_sset [2023-12-02 15:41:00,575 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_ethtool_sset [2023-12-02 15:41:00,575 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_hal_power_down_phy [2023-12-02 15:41:00,575 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_hal_power_down_phy [2023-12-02 15:41:00,575 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2023-12-02 15:41:00,575 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2023-12-02 15:41:00,575 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_set_mode [2023-12-02 15:41:00,575 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_set_mode [2023-12-02 15:41:00,576 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2023-12-02 15:41:00,576 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2023-12-02 15:41:00,576 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-12-02 15:41:00,576 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-12-02 15:41:00,576 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_setup_rx_resources [2023-12-02 15:41:00,577 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_setup_rx_resources [2023-12-02 15:41:00,577 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-12-02 15:41:00,577 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-12-02 15:41:00,577 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-12-02 15:41:00,577 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-12-02 15:41:00,577 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_validate_option [2023-12-02 15:41:00,577 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_validate_option [2023-12-02 15:41:00,578 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_mac_reset_hw [2023-12-02 15:41:00,578 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_mac_reset_hw [2023-12-02 15:41:00,578 INFO L130 BoogieDeclarations]: Found specification of procedure udp_hdr [2023-12-02 15:41:00,578 INFO L138 BoogieDeclarations]: Found implementation of procedure udp_hdr [2023-12-02 15:41:00,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 15:41:00,578 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_setup_rctl [2023-12-02 15:41:00,578 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_setup_rctl [2023-12-02 15:41:00,579 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_phy_sw_reset [2023-12-02 15:41:00,579 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_phy_sw_reset [2023-12-02 15:41:00,579 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-12-02 15:41:00,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-12-02 15:41:00,579 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_hal_phy_hw_reset [2023-12-02 15:41:00,579 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_hal_phy_hw_reset [2023-12-02 15:41:00,579 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_phy_write_reg_miic [2023-12-02 15:41:00,580 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_phy_write_reg_miic [2023-12-02 15:41:00,580 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2023-12-02 15:41:00,580 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2023-12-02 15:41:00,580 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2023-12-02 15:41:00,580 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2023-12-02 15:41:00,580 INFO L130 BoogieDeclarations]: Found specification of procedure pch_ch_control_write [2023-12-02 15:41:00,580 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_ch_control_write [2023-12-02 15:41:00,581 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_set_multi [2023-12-02 15:41:00,581 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_set_multi [2023-12-02 15:41:00,581 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_shutdown [2023-12-02 15:41:00,581 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_shutdown [2023-12-02 15:41:00,581 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2023-12-02 15:41:00,581 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2023-12-02 15:41:00,582 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2023-12-02 15:41:00,582 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2023-12-02 15:41:00,582 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_phy_read_reg_miic [2023-12-02 15:41:00,582 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_phy_read_reg_miic [2023-12-02 15:41:00,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev_95 [2023-12-02 15:41:00,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev_95 [2023-12-02 15:41:00,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-12-02 15:41:00,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-12-02 15:41:00,583 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_mac_read_mac_addr [2023-12-02 15:41:00,583 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_mac_read_mac_addr [2023-12-02 15:41:00,583 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_set_rgmii_ctrl [2023-12-02 15:41:00,583 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_set_rgmii_ctrl [2023-12-02 15:41:00,583 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed [2023-12-02 15:41:00,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed [2023-12-02 15:41:00,584 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_down [2023-12-02 15:41:00,584 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_down [2023-12-02 15:41:00,584 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_free_irq [2023-12-02 15:41:00,584 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_free_irq [2023-12-02 15:41:00,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 15:41:00,584 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_mac_mar_set [2023-12-02 15:41:00,585 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_mac_mar_set [2023-12-02 15:41:00,585 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-12-02 15:41:00,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-12-02 15:41:02,130 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:41:02,137 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:41:02,605 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-12-02 15:41:21,449 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2023-12-02 15:41:22,461 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:41:25,477 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:41:25,477 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 15:41:25,480 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:41:25 BoogieIcfgContainer [2023-12-02 15:41:25,480 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:41:25,483 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:41:25,483 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:41:25,487 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:41:25,487 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:40:52" (1/3) ... [2023-12-02 15:41:25,488 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38bdf3c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:41:25, skipping insertion in model container [2023-12-02 15:41:25,488 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:40:59" (2/3) ... [2023-12-02 15:41:25,488 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38bdf3c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:41:25, skipping insertion in model container [2023-12-02 15:41:25,488 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:41:25" (3/3) ... [2023-12-02 15:41:25,489 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i [2023-12-02 15:41:25,510 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:41:25,510 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-12-02 15:41:25,613 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:41:25,618 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;@5862c17b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:41:25,619 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-12-02 15:41:25,636 INFO L276 IsEmpty]: Start isEmpty. Operand has 2903 states, 1747 states have (on average 1.2907842014882656) internal successors, (2255), 1789 states have internal predecessors, (2255), 978 states have call successors, (978), 176 states have call predecessors, (978), 175 states have return successors, (968), 953 states have call predecessors, (968), 968 states have call successors, (968) [2023-12-02 15:41:25,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-12-02 15:41:25,668 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:41:25,669 INFO L195 NwaCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 21, 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] [2023-12-02 15:41:25,669 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-02 15:41:25,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:41:25,674 INFO L85 PathProgramCache]: Analyzing trace with hash -982157779, now seen corresponding path program 1 times [2023-12-02 15:41:25,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:41:25,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861019021] [2023-12-02 15:41:25,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:41:25,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:41:26,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:41:27,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1725 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1725 trivial. 0 not checked. [2023-12-02 15:41:27,292 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:41:27,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861019021] [2023-12-02 15:41:27,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861019021] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:41:27,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:41:27,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:41:27,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038917413] [2023-12-02 15:41:27,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:41:27,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:41:27,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:41:27,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:41:27,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:41:27,337 INFO L87 Difference]: Start difference. First operand has 2903 states, 1747 states have (on average 1.2907842014882656) internal successors, (2255), 1789 states have internal predecessors, (2255), 978 states have call successors, (978), 176 states have call predecessors, (978), 175 states have return successors, (968), 953 states have call predecessors, (968), 968 states have call successors, (968) Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2023-12-02 15:41:32,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:41:35,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:41:37,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:41:37,169 INFO L93 Difference]: Finished difference Result 8513 states and 12634 transitions. [2023-12-02 15:41:37,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:41:37,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 234 [2023-12-02 15:41:37,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:41:37,252 INFO L225 Difference]: With dead ends: 8513 [2023-12-02 15:41:37,252 INFO L226 Difference]: Without dead ends: 5639 [2023-12-02 15:41:37,285 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 [2023-12-02 15:41:37,290 INFO L413 NwaCegarLoop]: 3729 mSDtfsCounter, 4021 mSDsluCounter, 3600 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4021 SdHoareTripleChecker+Valid, 7329 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2023-12-02 15:41:37,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4021 Valid, 7329 Invalid, 1097 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 1087 Invalid, 1 Unknown, 0 Unchecked, 9.4s Time] [2023-12-02 15:41:37,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5639 states. [2023-12-02 15:41:37,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5639 to 5633. [2023-12-02 15:41:37,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5633 states, 3412 states have (on average 1.2845838218053927) internal successors, (4383), 3492 states have internal predecessors, (4383), 1871 states have call successors, (1871), 347 states have call predecessors, (1871), 346 states have return successors, (1867), 1837 states have call predecessors, (1867), 1867 states have call successors, (1867) [2023-12-02 15:41:37,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5633 states to 5633 states and 8121 transitions. [2023-12-02 15:41:37,895 INFO L78 Accepts]: Start accepts. Automaton has 5633 states and 8121 transitions. Word has length 234 [2023-12-02 15:41:37,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:41:37,897 INFO L495 AbstractCegarLoop]: Abstraction has 5633 states and 8121 transitions. [2023-12-02 15:41:37,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2023-12-02 15:41:37,898 INFO L276 IsEmpty]: Start isEmpty. Operand 5633 states and 8121 transitions. [2023-12-02 15:41:37,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-12-02 15:41:37,909 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:41:37,910 INFO L195 NwaCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:41:37,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 15:41:37,910 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-02 15:41:37,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:41:37,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1816717705, now seen corresponding path program 1 times [2023-12-02 15:41:37,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:41:37,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042422890] [2023-12-02 15:41:37,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:41:37,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:41:38,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:41:38,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2023-12-02 15:41:38,599 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:41:38,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042422890] [2023-12-02 15:41:38,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042422890] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:41:38,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:41:38,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:41:38,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323445917] [2023-12-02 15:41:38,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:41:38,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:41:38,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:41:38,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:41:38,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:41:38,604 INFO L87 Difference]: Start difference. First operand 5633 states and 8121 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-12-02 15:41:44,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:41:48,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:41:50,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:41:50,795 INFO L93 Difference]: Finished difference Result 13970 states and 20118 transitions. [2023-12-02 15:41:50,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:41:50,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 239 [2023-12-02 15:41:50,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:41:50,858 INFO L225 Difference]: With dead ends: 13970 [2023-12-02 15:41:50,858 INFO L226 Difference]: Without dead ends: 8380 [2023-12-02 15:41:50,888 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 [2023-12-02 15:41:50,890 INFO L413 NwaCegarLoop]: 3725 mSDtfsCounter, 3991 mSDsluCounter, 3597 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3991 SdHoareTripleChecker+Valid, 7322 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2023-12-02 15:41:50,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3991 Valid, 7322 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1099 Invalid, 2 Unknown, 0 Unchecked, 11.7s Time] [2023-12-02 15:41:50,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8380 states. [2023-12-02 15:41:51,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8380 to 8346. [2023-12-02 15:41:51,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8346 states, 5051 states have (on average 1.2807364878241931) internal successors, (6469), 5173 states have internal predecessors, (6469), 2770 states have call successors, (2770), 522 states have call predecessors, (2770), 521 states have return successors, (2766), 2716 states have call predecessors, (2766), 2766 states have call successors, (2766) [2023-12-02 15:41:51,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8346 states to 8346 states and 12005 transitions. [2023-12-02 15:41:51,398 INFO L78 Accepts]: Start accepts. Automaton has 8346 states and 12005 transitions. Word has length 239 [2023-12-02 15:41:51,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:41:51,400 INFO L495 AbstractCegarLoop]: Abstraction has 8346 states and 12005 transitions. [2023-12-02 15:41:51,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-12-02 15:41:51,400 INFO L276 IsEmpty]: Start isEmpty. Operand 8346 states and 12005 transitions. [2023-12-02 15:41:51,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-12-02 15:41:51,407 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:41:51,407 INFO L195 NwaCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:41:51,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 15:41:51,407 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-02 15:41:51,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:41:51,408 INFO L85 PathProgramCache]: Analyzing trace with hash -581642237, now seen corresponding path program 1 times [2023-12-02 15:41:51,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:41:51,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209583057] [2023-12-02 15:41:51,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:41:51,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:41:51,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:41:52,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2023-12-02 15:41:52,479 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:41:52,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209583057] [2023-12-02 15:41:52,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209583057] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:41:52,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:41:52,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:41:52,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921232911] [2023-12-02 15:41:52,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:41:52,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:41:52,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:41:52,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:41:52,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:41:52,484 INFO L87 Difference]: Start difference. First operand 8346 states and 12005 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-12-02 15:41:55,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:41:57,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:41:57,234 INFO L93 Difference]: Finished difference Result 16442 states and 23629 transitions. [2023-12-02 15:41:57,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:41:57,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 241 [2023-12-02 15:41:57,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:41:57,280 INFO L225 Difference]: With dead ends: 16442 [2023-12-02 15:41:57,280 INFO L226 Difference]: Without dead ends: 8139 [2023-12-02 15:41:57,308 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 [2023-12-02 15:41:57,309 INFO L413 NwaCegarLoop]: 3522 mSDtfsCounter, 3967 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3967 SdHoareTripleChecker+Valid, 3600 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-12-02 15:41:57,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3967 Valid, 3600 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-12-02 15:41:57,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8139 states. [2023-12-02 15:41:57,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8139 to 8139. [2023-12-02 15:41:57,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8139 states, 4935 states have (on average 1.2808510638297872) internal successors, (6321), 5048 states have internal predecessors, (6321), 2684 states have call successors, (2684), 517 states have call predecessors, (2684), 516 states have return successors, (2680), 2633 states have call predecessors, (2680), 2680 states have call successors, (2680) [2023-12-02 15:41:57,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8139 states to 8139 states and 11685 transitions. [2023-12-02 15:41:57,811 INFO L78 Accepts]: Start accepts. Automaton has 8139 states and 11685 transitions. Word has length 241 [2023-12-02 15:41:57,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:41:57,812 INFO L495 AbstractCegarLoop]: Abstraction has 8139 states and 11685 transitions. [2023-12-02 15:41:57,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-12-02 15:41:57,813 INFO L276 IsEmpty]: Start isEmpty. Operand 8139 states and 11685 transitions. [2023-12-02 15:41:57,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2023-12-02 15:41:57,820 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:41:57,820 INFO L195 NwaCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:41:57,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 15:41:57,820 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-02 15:41:57,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:41:57,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1156300440, now seen corresponding path program 1 times [2023-12-02 15:41:57,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:41:57,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091192702] [2023-12-02 15:41:57,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:41:57,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:41:58,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:41:58,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2023-12-02 15:41:58,563 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:41:58,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091192702] [2023-12-02 15:41:58,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091192702] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:41:58,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:41:58,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:41:58,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266889952] [2023-12-02 15:41:58,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:41:58,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:41:58,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:41:58,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:41:58,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:41:58,566 INFO L87 Difference]: Start difference. First operand 8139 states and 11685 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-12-02 15:42:00,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:42:06,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:42:06,359 INFO L93 Difference]: Finished difference Result 22679 states and 32629 transitions. [2023-12-02 15:42:06,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:42:06,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 243 [2023-12-02 15:42:06,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:42:06,430 INFO L225 Difference]: With dead ends: 22679 [2023-12-02 15:42:06,430 INFO L226 Difference]: Without dead ends: 14601 [2023-12-02 15:42:06,461 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 [2023-12-02 15:42:06,462 INFO L413 NwaCegarLoop]: 3529 mSDtfsCounter, 3221 mSDsluCounter, 3458 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3221 SdHoareTripleChecker+Valid, 6987 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:42:06,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3221 Valid, 6987 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-12-02 15:42:06,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14601 states. [2023-12-02 15:42:07,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14601 to 14565. [2023-12-02 15:42:07,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14565 states, 8838 states have (on average 1.273704458022177) internal successors, (11257), 9034 states have internal predecessors, (11257), 4780 states have call successors, (4780), 953 states have call predecessors, (4780), 943 states have return successors, (4926), 4670 states have call predecessors, (4926), 4776 states have call successors, (4926) [2023-12-02 15:42:07,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14565 states to 14565 states and 20963 transitions. [2023-12-02 15:42:07,231 INFO L78 Accepts]: Start accepts. Automaton has 14565 states and 20963 transitions. Word has length 243 [2023-12-02 15:42:07,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:42:07,232 INFO L495 AbstractCegarLoop]: Abstraction has 14565 states and 20963 transitions. [2023-12-02 15:42:07,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-12-02 15:42:07,232 INFO L276 IsEmpty]: Start isEmpty. Operand 14565 states and 20963 transitions. [2023-12-02 15:42:07,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2023-12-02 15:42:07,238 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:42:07,239 INFO L195 NwaCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:42:07,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 15:42:07,239 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-02 15:42:07,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:42:07,239 INFO L85 PathProgramCache]: Analyzing trace with hash -141948317, now seen corresponding path program 1 times [2023-12-02 15:42:07,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:42:07,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889968045] [2023-12-02 15:42:07,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:42:07,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:42:07,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:42:07,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2023-12-02 15:42:07,994 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:42:07,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889968045] [2023-12-02 15:42:07,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889968045] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:42:07,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:42:07,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:42:07,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556725101] [2023-12-02 15:42:07,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:42:07,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:42:07,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:42:07,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:42:07,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:42:07,998 INFO L87 Difference]: Start difference. First operand 14565 states and 20963 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-12-02 15:42:12,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:42:14,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:42:16,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:42:20,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:42:20,600 INFO L93 Difference]: Finished difference Result 42847 states and 61574 transitions. [2023-12-02 15:42:20,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:42:20,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 245 [2023-12-02 15:42:20,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:42:20,738 INFO L225 Difference]: With dead ends: 42847 [2023-12-02 15:42:20,738 INFO L226 Difference]: Without dead ends: 28343 [2023-12-02 15:42:20,790 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 [2023-12-02 15:42:20,791 INFO L413 NwaCegarLoop]: 4126 mSDtfsCounter, 3758 mSDsluCounter, 3461 mSDsCounter, 0 mSdLazyCounter, 1196 mSolverCounterSat, 29 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3758 SdHoareTripleChecker+Valid, 7587 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1196 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2023-12-02 15:42:20,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3758 Valid, 7587 Invalid, 1228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1196 Invalid, 3 Unknown, 0 Unchecked, 11.6s Time] [2023-12-02 15:42:20,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28343 states. [2023-12-02 15:42:22,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28343 to 28299. [2023-12-02 15:42:22,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28299 states, 17133 states have (on average 1.2647522325337068) internal successors, (21669), 17534 states have internal predecessors, (21669), 9287 states have call successors, (9287), 1894 states have call predecessors, (9287), 1875 states have return successors, (9514), 9056 states have call predecessors, (9514), 9283 states have call successors, (9514) [2023-12-02 15:42:22,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28299 states to 28299 states and 40470 transitions. [2023-12-02 15:42:22,629 INFO L78 Accepts]: Start accepts. Automaton has 28299 states and 40470 transitions. Word has length 245 [2023-12-02 15:42:22,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:42:22,629 INFO L495 AbstractCegarLoop]: Abstraction has 28299 states and 40470 transitions. [2023-12-02 15:42:22,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-12-02 15:42:22,630 INFO L276 IsEmpty]: Start isEmpty. Operand 28299 states and 40470 transitions. [2023-12-02 15:42:22,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2023-12-02 15:42:22,640 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:42:22,641 INFO L195 NwaCegarLoop]: trace histogram [23, 21, 21, 21, 21, 21, 21, 2, 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] [2023-12-02 15:42:22,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 15:42:22,641 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-02 15:42:22,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:42:22,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1010616131, now seen corresponding path program 1 times [2023-12-02 15:42:22,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:42:22,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354888559] [2023-12-02 15:42:22,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:42:22,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:42:22,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:42:23,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1773 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1766 trivial. 0 not checked. [2023-12-02 15:42:23,328 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:42:23,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354888559] [2023-12-02 15:42:23,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354888559] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:42:23,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:42:23,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:42:23,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471441992] [2023-12-02 15:42:23,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:42:23,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:42:23,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:42:23,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:42:23,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:42:23,330 INFO L87 Difference]: Start difference. First operand 28299 states and 40470 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-12-02 15:42:29,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:42:33,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:42:33,394 INFO L93 Difference]: Finished difference Result 70477 states and 100707 transitions. [2023-12-02 15:42:33,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:42:33,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 265 [2023-12-02 15:42:33,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:42:33,548 INFO L225 Difference]: With dead ends: 70477 [2023-12-02 15:42:33,548 INFO L226 Difference]: Without dead ends: 42239 [2023-12-02 15:42:33,724 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 [2023-12-02 15:42:33,725 INFO L413 NwaCegarLoop]: 3727 mSDtfsCounter, 3885 mSDsluCounter, 3495 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3885 SdHoareTripleChecker+Valid, 7222 SdHoareTripleChecker+Invalid, 1145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-12-02 15:42:33,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3885 Valid, 7222 Invalid, 1145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1131 Invalid, 1 Unknown, 0 Unchecked, 8.4s Time] [2023-12-02 15:42:33,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42239 states. [2023-12-02 15:42:35,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42239 to 42191. [2023-12-02 15:42:35,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42191 states, 25546 states have (on average 1.2616848038831912) internal successors, (32231), 26168 states have internal predecessors, (32231), 13804 states have call successors, (13804), 2865 states have call predecessors, (13804), 2837 states have return successors, (14125), 13436 states have call predecessors, (14125), 13800 states have call successors, (14125) [2023-12-02 15:42:35,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42191 states to 42191 states and 60160 transitions. [2023-12-02 15:42:35,962 INFO L78 Accepts]: Start accepts. Automaton has 42191 states and 60160 transitions. Word has length 265 [2023-12-02 15:42:35,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:42:35,962 INFO L495 AbstractCegarLoop]: Abstraction has 42191 states and 60160 transitions. [2023-12-02 15:42:35,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-12-02 15:42:35,963 INFO L276 IsEmpty]: Start isEmpty. Operand 42191 states and 60160 transitions. [2023-12-02 15:42:35,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2023-12-02 15:42:35,967 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:42:35,968 INFO L195 NwaCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:42:35,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 15:42:35,968 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-02 15:42:35,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:42:35,968 INFO L85 PathProgramCache]: Analyzing trace with hash -356163229, now seen corresponding path program 1 times [2023-12-02 15:42:35,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:42:35,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659779626] [2023-12-02 15:42:35,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:42:35,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:42:36,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:42:36,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2023-12-02 15:42:36,469 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:42:36,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659779626] [2023-12-02 15:42:36,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659779626] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:42:36,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:42:36,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:42:36,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750954308] [2023-12-02 15:42:36,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:42:36,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:42:36,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:42:36,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:42:36,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:42:36,471 INFO L87 Difference]: Start difference. First operand 42191 states and 60160 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-12-02 15:42:42,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:42:44,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:42:49,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:42:49,779 INFO L93 Difference]: Finished difference Result 106826 states and 151872 transitions. [2023-12-02 15:42:49,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:42:49,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 270 [2023-12-02 15:42:49,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:42:50,023 INFO L225 Difference]: With dead ends: 106826 [2023-12-02 15:42:50,024 INFO L226 Difference]: Without dead ends: 64696 [2023-12-02 15:42:50,140 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 [2023-12-02 15:42:50,141 INFO L413 NwaCegarLoop]: 5643 mSDtfsCounter, 3175 mSDsluCounter, 3470 mSDsCounter, 0 mSdLazyCounter, 1460 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3175 SdHoareTripleChecker+Valid, 9113 SdHoareTripleChecker+Invalid, 1479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1460 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2023-12-02 15:42:50,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3175 Valid, 9113 Invalid, 1479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1460 Invalid, 1 Unknown, 0 Unchecked, 10.5s Time] [2023-12-02 15:42:50,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64696 states. [2023-12-02 15:42:53,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64696 to 64634. [2023-12-02 15:42:53,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64634 states, 39166 states have (on average 1.25642138589593) internal successors, (49209), 40149 states have internal predecessors, (49209), 20874 states have call successors, (20874), 4649 states have call predecessors, (20874), 4590 states have return successors, (21366), 20251 states have call predecessors, (21366), 20870 states have call successors, (21366) [2023-12-02 15:42:53,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64634 states to 64634 states and 91449 transitions. [2023-12-02 15:42:53,853 INFO L78 Accepts]: Start accepts. Automaton has 64634 states and 91449 transitions. Word has length 270 [2023-12-02 15:42:53,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:42:53,853 INFO L495 AbstractCegarLoop]: Abstraction has 64634 states and 91449 transitions. [2023-12-02 15:42:53,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-12-02 15:42:53,853 INFO L276 IsEmpty]: Start isEmpty. Operand 64634 states and 91449 transitions. [2023-12-02 15:42:53,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2023-12-02 15:42:53,856 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:42:53,857 INFO L195 NwaCegarLoop]: trace histogram [25, 21, 21, 21, 21, 21, 21, 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] [2023-12-02 15:42:53,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 15:42:53,857 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-02 15:42:53,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:42:53,857 INFO L85 PathProgramCache]: Analyzing trace with hash 196358899, now seen corresponding path program 1 times [2023-12-02 15:42:53,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:42:53,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427493076] [2023-12-02 15:42:53,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:42:53,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:42:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:42:54,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1894 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1894 trivial. 0 not checked. [2023-12-02 15:42:54,763 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:42:54,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427493076] [2023-12-02 15:42:54,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427493076] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:42:54,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:42:54,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:42:54,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979367643] [2023-12-02 15:42:54,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:42:54,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:42:54,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:42:54,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:42:54,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:42:54,765 INFO L87 Difference]: Start difference. First operand 64634 states and 91449 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-12-02 15:43:00,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:43:02,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:43:04,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:43:10,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:43:10,470 INFO L93 Difference]: Finished difference Result 64640 states and 91454 transitions. [2023-12-02 15:43:10,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:43:10,471 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 284 [2023-12-02 15:43:10,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:43:10,770 INFO L225 Difference]: With dead ends: 64640 [2023-12-02 15:43:10,770 INFO L226 Difference]: Without dead ends: 64638 [2023-12-02 15:43:10,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 15:43:10,802 INFO L413 NwaCegarLoop]: 3519 mSDtfsCounter, 3958 mSDsluCounter, 7019 mSDsCounter, 0 mSdLazyCounter, 1579 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3974 SdHoareTripleChecker+Valid, 10538 SdHoareTripleChecker+Invalid, 1583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1579 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:43:10,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3974 Valid, 10538 Invalid, 1583 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1579 Invalid, 3 Unknown, 0 Unchecked, 13.2s Time] [2023-12-02 15:43:10,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64638 states. [2023-12-02 15:43:13,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64638 to 64638. [2023-12-02 15:43:13,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64638 states, 39169 states have (on average 1.2564017462789452) internal successors, (49212), 40152 states have internal predecessors, (49212), 20874 states have call successors, (20874), 4650 states have call predecessors, (20874), 4591 states have return successors, (21366), 20251 states have call predecessors, (21366), 20870 states have call successors, (21366) [2023-12-02 15:43:14,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64638 states to 64638 states and 91452 transitions. [2023-12-02 15:43:14,165 INFO L78 Accepts]: Start accepts. Automaton has 64638 states and 91452 transitions. Word has length 284 [2023-12-02 15:43:14,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:43:14,165 INFO L495 AbstractCegarLoop]: Abstraction has 64638 states and 91452 transitions. [2023-12-02 15:43:14,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-12-02 15:43:14,165 INFO L276 IsEmpty]: Start isEmpty. Operand 64638 states and 91452 transitions. [2023-12-02 15:43:14,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2023-12-02 15:43:14,169 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:43:14,169 INFO L195 NwaCegarLoop]: trace histogram [25, 21, 21, 21, 21, 21, 21, 5, 5, 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] [2023-12-02 15:43:14,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 15:43:14,169 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-02 15:43:14,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:43:14,169 INFO L85 PathProgramCache]: Analyzing trace with hash -546992955, now seen corresponding path program 1 times [2023-12-02 15:43:14,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:43:14,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650613857] [2023-12-02 15:43:14,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:43:14,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:43:14,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:43:15,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1896 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1894 trivial. 0 not checked. [2023-12-02 15:43:15,490 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:43:15,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650613857] [2023-12-02 15:43:15,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650613857] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:43:15,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:43:15,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:43:15,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983925589] [2023-12-02 15:43:15,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:43:15,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:43:15,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:43:15,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:43:15,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:43:15,493 INFO L87 Difference]: Start difference. First operand 64638 states and 91452 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2023-12-02 15:43:21,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:43:23,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:43:30,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:43:30,285 INFO L93 Difference]: Finished difference Result 64644 states and 91457 transitions. [2023-12-02 15:43:30,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:43:30,286 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 289 [2023-12-02 15:43:30,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:43:30,507 INFO L225 Difference]: With dead ends: 64644 [2023-12-02 15:43:30,507 INFO L226 Difference]: Without dead ends: 64642 [2023-12-02 15:43:30,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 15:43:30,538 INFO L413 NwaCegarLoop]: 3522 mSDtfsCounter, 3953 mSDsluCounter, 7019 mSDsCounter, 0 mSdLazyCounter, 1580 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3968 SdHoareTripleChecker+Valid, 10541 SdHoareTripleChecker+Invalid, 1583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1580 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:43:30,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3968 Valid, 10541 Invalid, 1583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1580 Invalid, 2 Unknown, 0 Unchecked, 12.1s Time] [2023-12-02 15:43:30,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64642 states. [2023-12-02 15:43:33,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64642 to 64642. [2023-12-02 15:43:33,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64642 states, 39172 states have (on average 1.2563821096701726) internal successors, (49215), 40155 states have internal predecessors, (49215), 20874 states have call successors, (20874), 4651 states have call predecessors, (20874), 4592 states have return successors, (21366), 20251 states have call predecessors, (21366), 20870 states have call successors, (21366) [2023-12-02 15:43:34,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64642 states to 64642 states and 91455 transitions. [2023-12-02 15:43:34,276 INFO L78 Accepts]: Start accepts. Automaton has 64642 states and 91455 transitions. Word has length 289 [2023-12-02 15:43:34,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:43:34,276 INFO L495 AbstractCegarLoop]: Abstraction has 64642 states and 91455 transitions. [2023-12-02 15:43:34,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2023-12-02 15:43:34,276 INFO L276 IsEmpty]: Start isEmpty. Operand 64642 states and 91455 transitions. [2023-12-02 15:43:34,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-12-02 15:43:34,280 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:43:34,280 INFO L195 NwaCegarLoop]: trace histogram [25, 21, 21, 21, 21, 21, 21, 5, 5, 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] [2023-12-02 15:43:34,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 15:43:34,280 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-02 15:43:34,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:43:34,281 INFO L85 PathProgramCache]: Analyzing trace with hash -132473357, now seen corresponding path program 1 times [2023-12-02 15:43:34,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:43:34,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044370805] [2023-12-02 15:43:34,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:43:34,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:43:34,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:43:35,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1902 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1898 trivial. 0 not checked. [2023-12-02 15:43:35,063 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:43:35,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044370805] [2023-12-02 15:43:35,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044370805] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:43:35,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:43:35,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:43:35,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376782864] [2023-12-02 15:43:35,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:43:35,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:43:35,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:43:35,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:43:35,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:43:35,066 INFO L87 Difference]: Start difference. First operand 64642 states and 91455 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2023-12-02 15:43:41,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:43:43,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:43:45,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:43:51,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:43:51,415 INFO L93 Difference]: Finished difference Result 64648 states and 91460 transitions. [2023-12-02 15:43:51,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:43:51,416 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 294 [2023-12-02 15:43:51,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:43:51,621 INFO L225 Difference]: With dead ends: 64648 [2023-12-02 15:43:51,621 INFO L226 Difference]: Without dead ends: 64646 [2023-12-02 15:43:51,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 15:43:51,645 INFO L413 NwaCegarLoop]: 3522 mSDtfsCounter, 3953 mSDsluCounter, 7019 mSDsCounter, 0 mSdLazyCounter, 1579 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3967 SdHoareTripleChecker+Valid, 10541 SdHoareTripleChecker+Invalid, 1583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1579 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2023-12-02 15:43:51,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3967 Valid, 10541 Invalid, 1583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1579 Invalid, 3 Unknown, 0 Unchecked, 12.9s Time] [2023-12-02 15:43:51,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64646 states. [2023-12-02 15:43:55,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64646 to 64646. [2023-12-02 15:43:55,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64646 states, 39175 states have (on average 1.2563624760689216) internal successors, (49218), 40158 states have internal predecessors, (49218), 20874 states have call successors, (20874), 4652 states have call predecessors, (20874), 4593 states have return successors, (21366), 20251 states have call predecessors, (21366), 20870 states have call successors, (21366) [2023-12-02 15:43:55,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64646 states to 64646 states and 91458 transitions. [2023-12-02 15:43:55,562 INFO L78 Accepts]: Start accepts. Automaton has 64646 states and 91458 transitions. Word has length 294 [2023-12-02 15:43:55,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:43:55,563 INFO L495 AbstractCegarLoop]: Abstraction has 64646 states and 91458 transitions. [2023-12-02 15:43:55,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2023-12-02 15:43:55,563 INFO L276 IsEmpty]: Start isEmpty. Operand 64646 states and 91458 transitions. [2023-12-02 15:43:55,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2023-12-02 15:43:55,568 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:43:55,568 INFO L195 NwaCegarLoop]: trace histogram [25, 21, 21, 21, 21, 21, 21, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:43:55,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-02 15:43:55,569 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-02 15:43:55,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:43:55,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1135084783, now seen corresponding path program 1 times [2023-12-02 15:43:55,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:43:55,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330122526] [2023-12-02 15:43:55,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:43:55,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:43:55,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:43:56,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1913 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1907 trivial. 0 not checked. [2023-12-02 15:43:56,426 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:43:56,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330122526] [2023-12-02 15:43:56,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330122526] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:43:56,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:43:56,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:43:56,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426558435] [2023-12-02 15:43:56,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:43:56,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:43:56,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:43:56,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:43:56,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:43:56,429 INFO L87 Difference]: Start difference. First operand 64646 states and 91458 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-12-02 15:44:02,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:44:04,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:44:12,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:44:12,068 INFO L93 Difference]: Finished difference Result 64652 states and 91463 transitions. [2023-12-02 15:44:12,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:44:12,069 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 300 [2023-12-02 15:44:12,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:44:12,269 INFO L225 Difference]: With dead ends: 64652 [2023-12-02 15:44:12,269 INFO L226 Difference]: Without dead ends: 64650 [2023-12-02 15:44:12,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 15:44:12,292 INFO L413 NwaCegarLoop]: 3522 mSDtfsCounter, 3953 mSDsluCounter, 7019 mSDsCounter, 0 mSdLazyCounter, 1581 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3966 SdHoareTripleChecker+Valid, 10541 SdHoareTripleChecker+Invalid, 1583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1581 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:44:12,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3966 Valid, 10541 Invalid, 1583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1581 Invalid, 1 Unknown, 0 Unchecked, 12.1s Time] [2023-12-02 15:44:12,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64650 states. [2023-12-02 15:44:16,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64650 to 64650. [2023-12-02 15:44:16,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64650 states, 39178 states have (on average 1.256342845474501) internal successors, (49221), 40161 states have internal predecessors, (49221), 20874 states have call successors, (20874), 4653 states have call predecessors, (20874), 4594 states have return successors, (21366), 20251 states have call predecessors, (21366), 20870 states have call successors, (21366) [2023-12-02 15:44:16,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64650 states to 64650 states and 91461 transitions. [2023-12-02 15:44:16,484 INFO L78 Accepts]: Start accepts. Automaton has 64650 states and 91461 transitions. Word has length 300 [2023-12-02 15:44:16,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:44:16,485 INFO L495 AbstractCegarLoop]: Abstraction has 64650 states and 91461 transitions. [2023-12-02 15:44:16,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-12-02 15:44:16,485 INFO L276 IsEmpty]: Start isEmpty. Operand 64650 states and 91461 transitions. [2023-12-02 15:44:16,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2023-12-02 15:44:16,654 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:44:16,655 INFO L195 NwaCegarLoop]: trace histogram [25, 21, 21, 21, 21, 21, 21, 5, 5, 5, 4, 4, 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] [2023-12-02 15:44:16,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-02 15:44:16,655 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-02 15:44:16,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:44:16,655 INFO L85 PathProgramCache]: Analyzing trace with hash -701957901, now seen corresponding path program 1 times [2023-12-02 15:44:16,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:44:16,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317606416] [2023-12-02 15:44:16,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:44:16,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:44:16,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:44:17,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1926 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1918 trivial. 0 not checked. [2023-12-02 15:44:17,427 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:44:17,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317606416] [2023-12-02 15:44:17,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317606416] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:44:17,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:44:17,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:44:17,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870830902] [2023-12-02 15:44:17,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:44:17,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:44:17,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:44:17,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:44:17,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:44:17,429 INFO L87 Difference]: Start difference. First operand 64650 states and 91461 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2023-12-02 15:44:23,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:44:25,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:44:27,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:44:33,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:44:33,962 INFO L93 Difference]: Finished difference Result 64656 states and 91466 transitions. [2023-12-02 15:44:33,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:44:33,963 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 304 [2023-12-02 15:44:33,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:44:34,225 INFO L225 Difference]: With dead ends: 64656 [2023-12-02 15:44:34,225 INFO L226 Difference]: Without dead ends: 64654 [2023-12-02 15:44:34,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 15:44:34,244 INFO L413 NwaCegarLoop]: 3522 mSDtfsCounter, 3953 mSDsluCounter, 7019 mSDsCounter, 0 mSdLazyCounter, 1579 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3965 SdHoareTripleChecker+Valid, 10541 SdHoareTripleChecker+Invalid, 1583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1579 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:44:34,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3965 Valid, 10541 Invalid, 1583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1579 Invalid, 3 Unknown, 0 Unchecked, 13.1s Time] [2023-12-02 15:44:34,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64654 states. [2023-12-02 15:44:38,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64654 to 64654. [2023-12-02 15:44:38,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64654 states, 39181 states have (on average 1.2563232178862203) internal successors, (49224), 40164 states have internal predecessors, (49224), 20874 states have call successors, (20874), 4654 states have call predecessors, (20874), 4595 states have return successors, (21366), 20251 states have call predecessors, (21366), 20870 states have call successors, (21366) [2023-12-02 15:44:39,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64654 states to 64654 states and 91464 transitions. [2023-12-02 15:44:39,034 INFO L78 Accepts]: Start accepts. Automaton has 64654 states and 91464 transitions. Word has length 304 [2023-12-02 15:44:39,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:44:39,034 INFO L495 AbstractCegarLoop]: Abstraction has 64654 states and 91464 transitions. [2023-12-02 15:44:39,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2023-12-02 15:44:39,035 INFO L276 IsEmpty]: Start isEmpty. Operand 64654 states and 91464 transitions. [2023-12-02 15:44:39,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2023-12-02 15:44:39,040 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:44:39,040 INFO L195 NwaCegarLoop]: trace histogram [25, 21, 21, 21, 21, 21, 21, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 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] [2023-12-02 15:44:39,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-02 15:44:39,040 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-02 15:44:39,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:44:39,041 INFO L85 PathProgramCache]: Analyzing trace with hash -2000186208, now seen corresponding path program 1 times [2023-12-02 15:44:39,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:44:39,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802703074] [2023-12-02 15:44:39,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:44:39,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:44:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:44:39,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1939 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1929 trivial. 0 not checked. [2023-12-02 15:44:39,763 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:44:39,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802703074] [2023-12-02 15:44:39,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802703074] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:44:39,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:44:39,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:44:39,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685664017] [2023-12-02 15:44:39,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:44:39,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:44:39,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:44:39,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:44:39,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:44:39,765 INFO L87 Difference]: Start difference. First operand 64654 states and 91464 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-12-02 15:44:45,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:44:47,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:44:49,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:44:56,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:44:56,232 INFO L93 Difference]: Finished difference Result 64660 states and 91469 transitions. [2023-12-02 15:44:56,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:44:56,233 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 308 [2023-12-02 15:44:56,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:44:56,451 INFO L225 Difference]: With dead ends: 64660 [2023-12-02 15:44:56,451 INFO L226 Difference]: Without dead ends: 64658 [2023-12-02 15:44:56,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 15:44:56,482 INFO L413 NwaCegarLoop]: 3522 mSDtfsCounter, 3954 mSDsluCounter, 7019 mSDsCounter, 0 mSdLazyCounter, 1579 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3965 SdHoareTripleChecker+Valid, 10541 SdHoareTripleChecker+Invalid, 1583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1579 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2023-12-02 15:44:56,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3965 Valid, 10541 Invalid, 1583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1579 Invalid, 3 Unknown, 0 Unchecked, 12.5s Time] [2023-12-02 15:44:56,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64658 states. [2023-12-02 15:45:01,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64658 to 64658. [2023-12-02 15:45:01,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64658 states, 39184 states have (on average 1.256303593303389) internal successors, (49227), 40167 states have internal predecessors, (49227), 20874 states have call successors, (20874), 4655 states have call predecessors, (20874), 4596 states have return successors, (21366), 20251 states have call predecessors, (21366), 20870 states have call successors, (21366) [2023-12-02 15:45:01,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64658 states to 64658 states and 91467 transitions. [2023-12-02 15:45:01,372 INFO L78 Accepts]: Start accepts. Automaton has 64658 states and 91467 transitions. Word has length 308 [2023-12-02 15:45:01,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:45:01,372 INFO L495 AbstractCegarLoop]: Abstraction has 64658 states and 91467 transitions. [2023-12-02 15:45:01,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-12-02 15:45:01,373 INFO L276 IsEmpty]: Start isEmpty. Operand 64658 states and 91467 transitions. [2023-12-02 15:45:01,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2023-12-02 15:45:01,379 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:45:01,379 INFO L195 NwaCegarLoop]: trace histogram [26, 21, 21, 21, 21, 21, 21, 4, 4, 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] [2023-12-02 15:45:01,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-02 15:45:01,379 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-02 15:45:01,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:45:01,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1094345151, now seen corresponding path program 1 times [2023-12-02 15:45:01,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:45:01,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040460324] [2023-12-02 15:45:01,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:45:01,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:45:01,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:45:01,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1943 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1936 trivial. 0 not checked. [2023-12-02 15:45:01,750 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:45:01,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040460324] [2023-12-02 15:45:01,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040460324] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:45:01,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:45:01,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:45:01,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168912960] [2023-12-02 15:45:01,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:45:01,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:45:01,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:45:01,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:45:01,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:45:01,752 INFO L87 Difference]: Start difference. First operand 64658 states and 91467 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-12-02 15:45:09,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:45:11,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:45:13,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:45:22,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:45:22,660 INFO L93 Difference]: Finished difference Result 160949 states and 227746 transitions. [2023-12-02 15:45:22,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:45:22,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 305 [2023-12-02 15:45:22,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:45:22,999 INFO L225 Difference]: With dead ends: 160949 [2023-12-02 15:45:22,999 INFO L226 Difference]: Without dead ends: 96582 [2023-12-02 15:45:23,169 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 [2023-12-02 15:45:23,170 INFO L413 NwaCegarLoop]: 6911 mSDtfsCounter, 3902 mSDsluCounter, 3492 mSDsCounter, 0 mSdLazyCounter, 1563 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3902 SdHoareTripleChecker+Valid, 10403 SdHoareTripleChecker+Invalid, 1570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1563 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2023-12-02 15:45:23,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3902 Valid, 10403 Invalid, 1570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1563 Invalid, 3 Unknown, 0 Unchecked, 14.6s Time] [2023-12-02 15:45:23,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96582 states. [2023-12-02 15:45:30,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96582 to 96494. [2023-12-02 15:45:30,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96494 states, 58482 states have (on average 1.2566430696624602) internal successors, (73491), 59971 states have internal predecessors, (73491), 31131 states have call successors, (31131), 6965 states have call predecessors, (31131), 6877 states have return successors, (31871), 30181 states have call predecessors, (31871), 31127 states have call successors, (31871) [2023-12-02 15:45:30,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96494 states to 96494 states and 136493 transitions. [2023-12-02 15:45:30,831 INFO L78 Accepts]: Start accepts. Automaton has 96494 states and 136493 transitions. Word has length 305 [2023-12-02 15:45:30,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:45:30,832 INFO L495 AbstractCegarLoop]: Abstraction has 96494 states and 136493 transitions. [2023-12-02 15:45:30,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-12-02 15:45:30,832 INFO L276 IsEmpty]: Start isEmpty. Operand 96494 states and 136493 transitions. [2023-12-02 15:45:30,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2023-12-02 15:45:30,839 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:45:30,839 INFO L195 NwaCegarLoop]: trace histogram [25, 21, 21, 21, 21, 21, 21, 7, 6, 6, 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] [2023-12-02 15:45:30,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-02 15:45:30,840 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-02 15:45:30,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:45:30,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1756578803, now seen corresponding path program 1 times [2023-12-02 15:45:30,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:45:30,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122736105] [2023-12-02 15:45:30,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:45:30,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:45:30,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:45:31,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1966 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1954 trivial. 0 not checked. [2023-12-02 15:45:31,566 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:45:31,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122736105] [2023-12-02 15:45:31,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122736105] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:45:31,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:45:31,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:45:31,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855579555] [2023-12-02 15:45:31,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:45:31,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:45:31,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:45:31,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:45:31,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:45:31,568 INFO L87 Difference]: Start difference. First operand 96494 states and 136493 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2023-12-02 15:45:39,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:45:41,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:45:43,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:45:51,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:45:51,770 INFO L93 Difference]: Finished difference Result 96500 states and 136498 transitions. [2023-12-02 15:45:51,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:45:51,771 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 314 [2023-12-02 15:45:51,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:45:52,165 INFO L225 Difference]: With dead ends: 96500 [2023-12-02 15:45:52,166 INFO L226 Difference]: Without dead ends: 96498 [2023-12-02 15:45:52,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 15:45:52,199 INFO L413 NwaCegarLoop]: 3522 mSDtfsCounter, 3953 mSDsluCounter, 7019 mSDsCounter, 0 mSdLazyCounter, 1579 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3963 SdHoareTripleChecker+Valid, 10541 SdHoareTripleChecker+Invalid, 1583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1579 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2023-12-02 15:45:52,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3963 Valid, 10541 Invalid, 1583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1579 Invalid, 3 Unknown, 0 Unchecked, 13.7s Time] [2023-12-02 15:45:52,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96498 states. [2023-12-02 15:45:59,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96498 to 96498. [2023-12-02 15:45:59,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96498 states, 58485 states have (on average 1.2566299051038727) internal successors, (73494), 59974 states have internal predecessors, (73494), 31131 states have call successors, (31131), 6966 states have call predecessors, (31131), 6878 states have return successors, (31871), 30181 states have call predecessors, (31871), 31127 states have call successors, (31871) [2023-12-02 15:46:00,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96498 states to 96498 states and 136496 transitions. [2023-12-02 15:46:00,252 INFO L78 Accepts]: Start accepts. Automaton has 96498 states and 136496 transitions. Word has length 314 [2023-12-02 15:46:00,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:46:00,252 INFO L495 AbstractCegarLoop]: Abstraction has 96498 states and 136496 transitions. [2023-12-02 15:46:00,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2023-12-02 15:46:00,252 INFO L276 IsEmpty]: Start isEmpty. Operand 96498 states and 136496 transitions. [2023-12-02 15:46:00,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2023-12-02 15:46:00,261 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:46:00,262 INFO L195 NwaCegarLoop]: trace histogram [25, 21, 21, 21, 21, 21, 21, 8, 7, 7, 4, 4, 2, 2, 2, 2, 2, 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] [2023-12-02 15:46:00,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-02 15:46:00,262 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-02 15:46:00,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:46:00,262 INFO L85 PathProgramCache]: Analyzing trace with hash 366068576, now seen corresponding path program 1 times [2023-12-02 15:46:00,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:46:00,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942663406] [2023-12-02 15:46:00,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:46:00,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:46:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:46:01,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1987 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1973 trivial. 0 not checked. [2023-12-02 15:46:01,187 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:46:01,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942663406] [2023-12-02 15:46:01,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942663406] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:46:01,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:46:01,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:46:01,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034714596] [2023-12-02 15:46:01,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:46:01,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:46:01,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:46:01,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:46:01,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:46:01,190 INFO L87 Difference]: Start difference. First operand 96498 states and 136496 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2023-12-02 15:46:09,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:46:11,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:46:21,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:46:21,088 INFO L93 Difference]: Finished difference Result 96504 states and 136501 transitions. [2023-12-02 15:46:21,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:46:21,088 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 318 [2023-12-02 15:46:21,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:46:21,414 INFO L225 Difference]: With dead ends: 96504 [2023-12-02 15:46:21,414 INFO L226 Difference]: Without dead ends: 96502 [2023-12-02 15:46:21,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 15:46:21,448 INFO L413 NwaCegarLoop]: 3522 mSDtfsCounter, 3954 mSDsluCounter, 7019 mSDsCounter, 0 mSdLazyCounter, 1580 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3963 SdHoareTripleChecker+Valid, 10541 SdHoareTripleChecker+Invalid, 1583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1580 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2023-12-02 15:46:21,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3963 Valid, 10541 Invalid, 1583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1580 Invalid, 2 Unknown, 0 Unchecked, 12.8s Time] [2023-12-02 15:46:21,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96502 states. [2023-12-02 15:46:29,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96502 to 96502. [2023-12-02 15:46:29,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96502 states, 58488 states have (on average 1.2566167418957734) internal successors, (73497), 59977 states have internal predecessors, (73497), 31131 states have call successors, (31131), 6967 states have call predecessors, (31131), 6879 states have return successors, (31871), 30181 states have call predecessors, (31871), 31127 states have call successors, (31871) [2023-12-02 15:46:29,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96502 states to 96502 states and 136499 transitions. [2023-12-02 15:46:29,590 INFO L78 Accepts]: Start accepts. Automaton has 96502 states and 136499 transitions. Word has length 318 [2023-12-02 15:46:29,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:46:29,591 INFO L495 AbstractCegarLoop]: Abstraction has 96502 states and 136499 transitions. [2023-12-02 15:46:29,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2023-12-02 15:46:29,591 INFO L276 IsEmpty]: Start isEmpty. Operand 96502 states and 136499 transitions. [2023-12-02 15:46:29,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2023-12-02 15:46:29,600 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:46:29,600 INFO L195 NwaCegarLoop]: trace histogram [25, 21, 21, 21, 21, 21, 21, 9, 8, 8, 5, 5, 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] [2023-12-02 15:46:29,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-02 15:46:29,601 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-02 15:46:29,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:46:29,601 INFO L85 PathProgramCache]: Analyzing trace with hash 111033993, now seen corresponding path program 1 times [2023-12-02 15:46:29,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:46:29,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635401629] [2023-12-02 15:46:29,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:46:29,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:46:29,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:46:30,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2023 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2007 trivial. 0 not checked. [2023-12-02 15:46:30,374 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:46:30,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635401629] [2023-12-02 15:46:30,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635401629] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:46:30,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:46:30,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:46:30,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680681257] [2023-12-02 15:46:30,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:46:30,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:46:30,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:46:30,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:46:30,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:46:30,376 INFO L87 Difference]: Start difference. First operand 96502 states and 136499 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2023-12-02 15:46:37,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:46:39,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:46:41,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:46:52,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:46:52,132 INFO L93 Difference]: Finished difference Result 97160 states and 136901 transitions. [2023-12-02 15:46:52,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:46:52,133 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) Word has length 325 [2023-12-02 15:46:52,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:46:52,490 INFO L225 Difference]: With dead ends: 97160 [2023-12-02 15:46:52,491 INFO L226 Difference]: Without dead ends: 97158 [2023-12-02 15:46:52,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 15:46:52,526 INFO L413 NwaCegarLoop]: 3525 mSDtfsCounter, 3913 mSDsluCounter, 7059 mSDsCounter, 0 mSdLazyCounter, 1608 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3921 SdHoareTripleChecker+Valid, 10584 SdHoareTripleChecker+Invalid, 1613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1608 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2023-12-02 15:46:52,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3921 Valid, 10584 Invalid, 1613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1608 Invalid, 3 Unknown, 0 Unchecked, 14.4s Time] [2023-12-02 15:46:52,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97158 states. [2023-12-02 15:47:01,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97158 to 97156. [2023-12-02 15:47:01,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97156 states, 58863 states have (on average 1.255389633555884) internal successors, (73896), 60352 states have internal predecessors, (73896), 31131 states have call successors, (31131), 7246 states have call predecessors, (31131), 7158 states have return successors, (31871), 30181 states have call predecessors, (31871), 31127 states have call successors, (31871) [2023-12-02 15:47:01,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97156 states to 97156 states and 136898 transitions. [2023-12-02 15:47:01,617 INFO L78 Accepts]: Start accepts. Automaton has 97156 states and 136898 transitions. Word has length 325 [2023-12-02 15:47:01,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:47:01,618 INFO L495 AbstractCegarLoop]: Abstraction has 97156 states and 136898 transitions. [2023-12-02 15:47:01,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2023-12-02 15:47:01,618 INFO L276 IsEmpty]: Start isEmpty. Operand 97156 states and 136898 transitions. [2023-12-02 15:47:01,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2023-12-02 15:47:01,629 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:47:01,629 INFO L195 NwaCegarLoop]: trace histogram [25, 21, 21, 21, 21, 21, 21, 4, 4, 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] [2023-12-02 15:47:01,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-02 15:47:01,630 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-02 15:47:01,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:47:01,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1382633620, now seen corresponding path program 1 times [2023-12-02 15:47:01,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:47:01,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994435591] [2023-12-02 15:47:01,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:01,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:47:01,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:47:02,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1881 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1878 trivial. 0 not checked. [2023-12-02 15:47:02,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:47:02,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994435591] [2023-12-02 15:47:02,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994435591] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:47:02,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:47:02,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:47:02,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338089952] [2023-12-02 15:47:02,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:47:02,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:47:02,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:47:02,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:47:02,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:47:02,244 INFO L87 Difference]: Start difference. First operand 97156 states and 136898 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, (44), 2 states have call predecessors, (44), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2023-12-02 15:47:12,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:47:13,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:47:26,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:47:26,432 INFO L93 Difference]: Finished difference Result 234088 states and 329508 transitions. [2023-12-02 15:47:26,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:47:26,433 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, (44), 2 states have call predecessors, (44), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 325 [2023-12-02 15:47:26,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:47:26,977 INFO L225 Difference]: With dead ends: 234088 [2023-12-02 15:47:26,977 INFO L226 Difference]: Without dead ends: 137223 [2023-12-02 15:47:27,272 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 [2023-12-02 15:47:27,273 INFO L413 NwaCegarLoop]: 4487 mSDtfsCounter, 3168 mSDsluCounter, 3466 mSDsCounter, 0 mSdLazyCounter, 1280 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3168 SdHoareTripleChecker+Valid, 7953 SdHoareTripleChecker+Invalid, 1296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1280 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:47:27,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3168 Valid, 7953 Invalid, 1296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1280 Invalid, 1 Unknown, 0 Unchecked, 11.0s Time] [2023-12-02 15:47:27,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137223 states. [2023-12-02 15:47:41,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137223 to 137109. [2023-12-02 15:47:41,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137109 states, 83034 states have (on average 1.2527277982513187) internal successors, (104019), 85161 states have internal predecessors, (104019), 43726 states have call successors, (43726), 10484 states have call predecessors, (43726), 10345 states have return successors, (44760), 42339 states have call predecessors, (44760), 43722 states have call successors, (44760) [2023-12-02 15:47:42,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137109 states to 137109 states and 192505 transitions. [2023-12-02 15:47:42,127 INFO L78 Accepts]: Start accepts. Automaton has 137109 states and 192505 transitions. Word has length 325 [2023-12-02 15:47:42,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:47:42,127 INFO L495 AbstractCegarLoop]: Abstraction has 137109 states and 192505 transitions. [2023-12-02 15:47:42,127 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, (44), 2 states have call predecessors, (44), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2023-12-02 15:47:42,127 INFO L276 IsEmpty]: Start isEmpty. Operand 137109 states and 192505 transitions. [2023-12-02 15:47:42,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2023-12-02 15:47:42,136 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:47:42,136 INFO L195 NwaCegarLoop]: trace histogram [25, 21, 21, 21, 21, 21, 21, 10, 9, 9, 5, 5, 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] [2023-12-02 15:47:42,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-02 15:47:42,136 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-02 15:47:42,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:47:42,137 INFO L85 PathProgramCache]: Analyzing trace with hash -320205585, now seen corresponding path program 1 times [2023-12-02 15:47:42,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:47:42,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788528953] [2023-12-02 15:47:42,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:42,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:47:42,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:47:43,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2057 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2039 trivial. 0 not checked. [2023-12-02 15:47:43,143 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:47:43,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788528953] [2023-12-02 15:47:43,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788528953] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:47:43,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:47:43,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:47:43,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667992296] [2023-12-02 15:47:43,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:47:43,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:47:43,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:47:43,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:47:43,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:47:43,145 INFO L87 Difference]: Start difference. First operand 137109 states and 192505 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2023-12-02 15:47:52,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:47:54,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:47:56,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:48:10,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:48:10,427 INFO L93 Difference]: Finished difference Result 137115 states and 192510 transitions. [2023-12-02 15:48:10,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:48:10,428 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 330 [2023-12-02 15:48:10,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:48:11,086 INFO L225 Difference]: With dead ends: 137115 [2023-12-02 15:48:11,086 INFO L226 Difference]: Without dead ends: 137113 [2023-12-02 15:48:11,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 15:48:11,144 INFO L413 NwaCegarLoop]: 3522 mSDtfsCounter, 3953 mSDsluCounter, 7019 mSDsCounter, 0 mSdLazyCounter, 1579 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3960 SdHoareTripleChecker+Valid, 10541 SdHoareTripleChecker+Invalid, 1583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1579 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:48:11,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3960 Valid, 10541 Invalid, 1583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1579 Invalid, 3 Unknown, 0 Unchecked, 15.1s Time] [2023-12-02 15:48:11,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137113 states. [2023-12-02 15:48:24,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137113 to 137113. [2023-12-02 15:48:24,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137113 states, 83037 states have (on average 1.2527186675819213) internal successors, (104022), 85164 states have internal predecessors, (104022), 43726 states have call successors, (43726), 10485 states have call predecessors, (43726), 10346 states have return successors, (44760), 42339 states have call predecessors, (44760), 43722 states have call successors, (44760) [2023-12-02 15:48:25,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137113 states to 137113 states and 192508 transitions. [2023-12-02 15:48:25,810 INFO L78 Accepts]: Start accepts. Automaton has 137113 states and 192508 transitions. Word has length 330 [2023-12-02 15:48:25,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:48:25,810 INFO L495 AbstractCegarLoop]: Abstraction has 137113 states and 192508 transitions. [2023-12-02 15:48:25,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2023-12-02 15:48:25,811 INFO L276 IsEmpty]: Start isEmpty. Operand 137113 states and 192508 transitions. [2023-12-02 15:48:25,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2023-12-02 15:48:25,821 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:48:25,822 INFO L195 NwaCegarLoop]: trace histogram [25, 21, 21, 21, 21, 21, 21, 11, 10, 10, 5, 5, 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] [2023-12-02 15:48:25,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-02 15:48:25,822 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-02 15:48:25,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:48:25,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1912235529, now seen corresponding path program 1 times [2023-12-02 15:48:25,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:48:25,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902308745] [2023-12-02 15:48:25,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:48:25,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:48:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:48:26,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2095 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 2075 trivial. 0 not checked. [2023-12-02 15:48:26,893 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:48:26,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902308745] [2023-12-02 15:48:26,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902308745] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:48:26,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:48:26,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:48:26,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884662495] [2023-12-02 15:48:26,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:48:26,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:48:26,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:48:26,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:48:26,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:48:26,896 INFO L87 Difference]: Start difference. First operand 137113 states and 192508 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-12-02 15:48:36,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:48:38,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:48:52,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:48:52,483 INFO L93 Difference]: Finished difference Result 137119 states and 192513 transitions. [2023-12-02 15:48:52,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:48:52,484 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 335 [2023-12-02 15:48:52,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:48:53,159 INFO L225 Difference]: With dead ends: 137119 [2023-12-02 15:48:53,160 INFO L226 Difference]: Without dead ends: 137117 [2023-12-02 15:48:53,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 15:48:53,220 INFO L413 NwaCegarLoop]: 3522 mSDtfsCounter, 3953 mSDsluCounter, 7019 mSDsCounter, 0 mSdLazyCounter, 1580 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3959 SdHoareTripleChecker+Valid, 10541 SdHoareTripleChecker+Invalid, 1583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1580 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2023-12-02 15:48:53,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3959 Valid, 10541 Invalid, 1583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1580 Invalid, 2 Unknown, 0 Unchecked, 12.6s Time] [2023-12-02 15:48:53,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137117 states. [2023-12-02 15:49:08,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137117 to 137117. [2023-12-02 15:49:08,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137117 states, 83040 states have (on average 1.2527095375722543) internal successors, (104025), 85167 states have internal predecessors, (104025), 43726 states have call successors, (43726), 10486 states have call predecessors, (43726), 10347 states have return successors, (44760), 42339 states have call predecessors, (44760), 43722 states have call successors, (44760) [2023-12-02 15:49:09,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137117 states to 137117 states and 192511 transitions. [2023-12-02 15:49:09,971 INFO L78 Accepts]: Start accepts. Automaton has 137117 states and 192511 transitions. Word has length 335 [2023-12-02 15:49:09,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:49:09,971 INFO L495 AbstractCegarLoop]: Abstraction has 137117 states and 192511 transitions. [2023-12-02 15:49:09,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-12-02 15:49:09,972 INFO L276 IsEmpty]: Start isEmpty. Operand 137117 states and 192511 transitions. [2023-12-02 15:49:09,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2023-12-02 15:49:09,993 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:49:09,993 INFO L195 NwaCegarLoop]: trace histogram [28, 21, 21, 21, 21, 21, 21, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-02 15:49:09,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-02 15:49:09,994 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-02 15:49:09,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:49:09,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1326310133, now seen corresponding path program 1 times [2023-12-02 15:49:09,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:49:09,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965097461] [2023-12-02 15:49:09,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:49:09,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:49:10,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:49:10,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2068 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2049 trivial. 0 not checked. [2023-12-02 15:49:10,957 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:49:10,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965097461] [2023-12-02 15:49:10,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965097461] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:49:10,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:49:10,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:49:10,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233788280] [2023-12-02 15:49:10,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:49:10,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:49:10,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:49:10,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:49:10,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:49:10,960 INFO L87 Difference]: Start difference. First operand 137117 states and 192511 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (34), 3 states have call predecessors, (34), 2 states have call successors, (34) [2023-12-02 15:49:25,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:49:27,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:49:29,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:49:31,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:49:33,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:49:35,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:49:37,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:50:04,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:50:04,098 INFO L93 Difference]: Finished difference Result 319001 states and 447776 transitions. [2023-12-02 15:50:04,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 15:50:04,099 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (34), 3 states have call predecessors, (34), 2 states have call successors, (34) Word has length 331 [2023-12-02 15:50:04,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:50:04,975 INFO L225 Difference]: With dead ends: 319001 [2023-12-02 15:50:04,975 INFO L226 Difference]: Without dead ends: 182175 [2023-12-02 15:50:05,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:50:05,558 INFO L413 NwaCegarLoop]: 6911 mSDtfsCounter, 3877 mSDsluCounter, 17310 mSDsCounter, 0 mSdLazyCounter, 3602 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3877 SdHoareTripleChecker+Valid, 24221 SdHoareTripleChecker+Invalid, 3608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3602 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.7s IncrementalHoareTripleChecker+Time [2023-12-02 15:50:05,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3877 Valid, 24221 Invalid, 3608 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 3602 Invalid, 5 Unknown, 0 Unchecked, 32.7s Time] [2023-12-02 15:50:05,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182175 states. [2023-12-02 15:50:25,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182175 to 182003. [2023-12-02 15:50:25,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182003 states, 110123 states have (on average 1.2516186446064854) internal successors, (137832), 112974 states have internal predecessors, (137832), 58102 states have call successors, (58102), 13935 states have call predecessors, (58102), 13774 states have return successors, (59506), 56261 states have call predecessors, (59506), 58098 states have call successors, (59506) [2023-12-02 15:50:26,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182003 states to 182003 states and 255440 transitions. [2023-12-02 15:50:26,855 INFO L78 Accepts]: Start accepts. Automaton has 182003 states and 255440 transitions. Word has length 331 [2023-12-02 15:50:26,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:50:26,855 INFO L495 AbstractCegarLoop]: Abstraction has 182003 states and 255440 transitions. [2023-12-02 15:50:26,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (34), 3 states have call predecessors, (34), 2 states have call successors, (34) [2023-12-02 15:50:26,856 INFO L276 IsEmpty]: Start isEmpty. Operand 182003 states and 255440 transitions. [2023-12-02 15:50:26,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2023-12-02 15:50:26,871 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:50:26,871 INFO L195 NwaCegarLoop]: trace histogram [25, 21, 21, 21, 21, 21, 21, 12, 11, 11, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:50:26,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-02 15:50:26,872 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-02 15:50:26,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:50:26,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1565211409, now seen corresponding path program 1 times [2023-12-02 15:50:26,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:50:26,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311759961] [2023-12-02 15:50:26,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:50:26,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:50:27,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:50:27,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2137 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 2115 trivial. 0 not checked. [2023-12-02 15:50:27,686 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:50:27,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311759961] [2023-12-02 15:50:27,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311759961] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:50:27,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:50:27,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:50:27,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408739275] [2023-12-02 15:50:27,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:50:27,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:50:27,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:50:27,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:50:27,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:50:27,688 INFO L87 Difference]: Start difference. First operand 182003 states and 255440 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2023-12-02 15:50:40,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:50:42,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:50:44,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:51:02,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:51:02,746 INFO L93 Difference]: Finished difference Result 182009 states and 255445 transitions. [2023-12-02 15:51:02,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:51:02,747 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 340 [2023-12-02 15:51:02,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:51:03,781 INFO L225 Difference]: With dead ends: 182009 [2023-12-02 15:51:03,781 INFO L226 Difference]: Without dead ends: 182007 [2023-12-02 15:51:03,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 15:51:03,862 INFO L413 NwaCegarLoop]: 3522 mSDtfsCounter, 3953 mSDsluCounter, 7019 mSDsCounter, 0 mSdLazyCounter, 1579 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3958 SdHoareTripleChecker+Valid, 10541 SdHoareTripleChecker+Invalid, 1583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1579 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2023-12-02 15:51:03,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3958 Valid, 10541 Invalid, 1583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1579 Invalid, 3 Unknown, 0 Unchecked, 15.5s Time] [2023-12-02 15:51:04,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182007 states. [2023-12-02 15:51:24,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182007 to 182007. [2023-12-02 15:51:25,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182007 states, 110126 states have (on average 1.2516117901313042) internal successors, (137835), 112977 states have internal predecessors, (137835), 58102 states have call successors, (58102), 13936 states have call predecessors, (58102), 13775 states have return successors, (59506), 56261 states have call predecessors, (59506), 58098 states have call successors, (59506) [2023-12-02 15:51:26,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182007 states to 182007 states and 255443 transitions. [2023-12-02 15:51:26,216 INFO L78 Accepts]: Start accepts. Automaton has 182007 states and 255443 transitions. Word has length 340 [2023-12-02 15:51:26,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:51:26,216 INFO L495 AbstractCegarLoop]: Abstraction has 182007 states and 255443 transitions. [2023-12-02 15:51:26,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2023-12-02 15:51:26,217 INFO L276 IsEmpty]: Start isEmpty. Operand 182007 states and 255443 transitions. [2023-12-02 15:51:26,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2023-12-02 15:51:26,228 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:51:26,229 INFO L195 NwaCegarLoop]: trace histogram [28, 21, 21, 21, 21, 21, 21, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-02 15:51:26,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-02 15:51:26,229 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-02 15:51:26,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:51:26,229 INFO L85 PathProgramCache]: Analyzing trace with hash 761226763, now seen corresponding path program 1 times [2023-12-02 15:51:26,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:51:26,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746512112] [2023-12-02 15:51:26,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:51:26,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:51:26,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:51:27,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2068 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2049 trivial. 0 not checked. [2023-12-02 15:51:27,168 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:51:27,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746512112] [2023-12-02 15:51:27,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746512112] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:51:27,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:51:27,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:51:27,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141676450] [2023-12-02 15:51:27,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:51:27,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:51:27,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:51:27,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:51:27,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:51:27,171 INFO L87 Difference]: Start difference. First operand 182007 states and 255443 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (34), 3 states have call predecessors, (34), 2 states have call successors, (34) [2023-12-02 15:51:45,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:51:47,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:51:49,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:51:52,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:51:54,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:51:56,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:52:26,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:52:26,973 INFO L93 Difference]: Finished difference Result 408833 states and 573739 transitions. [2023-12-02 15:52:26,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 15:52:26,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (34), 3 states have call predecessors, (34), 2 states have call successors, (34) Word has length 332 [2023-12-02 15:52:26,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:52:28,359 INFO L225 Difference]: With dead ends: 408833 [2023-12-02 15:52:28,359 INFO L226 Difference]: Without dead ends: 227117 [2023-12-02 15:52:29,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:52:29,077 INFO L413 NwaCegarLoop]: 6916 mSDtfsCounter, 3879 mSDsluCounter, 17318 mSDsCounter, 0 mSdLazyCounter, 3602 mSolverCounterSat, 3 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3879 SdHoareTripleChecker+Valid, 24234 SdHoareTripleChecker+Invalid, 3611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 3602 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.7s IncrementalHoareTripleChecker+Time [2023-12-02 15:52:29,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3879 Valid, 24234 Invalid, 3611 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 3602 Invalid, 6 Unknown, 0 Unchecked, 33.7s Time] [2023-12-02 15:52:29,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227117 states. [2023-12-02 15:52:52,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227117 to 226941. [2023-12-02 15:52:52,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226941 states, 137257 states have (on average 1.2508651653467582) internal successors, (171690), 140832 states have internal predecessors, (171690), 72478 states have call successors, (72478), 17385 states have call predecessors, (72478), 17202 states have return successors, (74252), 70183 states have call predecessors, (74252), 72474 states have call successors, (74252) [2023-12-02 15:52:53,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226941 states to 226941 states and 318420 transitions. [2023-12-02 15:52:53,582 INFO L78 Accepts]: Start accepts. Automaton has 226941 states and 318420 transitions. Word has length 332 [2023-12-02 15:52:53,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:52:53,582 INFO L495 AbstractCegarLoop]: Abstraction has 226941 states and 318420 transitions. [2023-12-02 15:52:53,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (34), 3 states have call predecessors, (34), 2 states have call successors, (34) [2023-12-02 15:52:53,582 INFO L276 IsEmpty]: Start isEmpty. Operand 226941 states and 318420 transitions. [2023-12-02 15:52:53,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2023-12-02 15:52:53,593 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:52:53,593 INFO L195 NwaCegarLoop]: trace histogram [27, 21, 21, 21, 21, 21, 21, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 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] [2023-12-02 15:52:53,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-02 15:52:53,593 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-02 15:52:53,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:52:53,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1823092001, now seen corresponding path program 1 times [2023-12-02 15:52:53,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:52:53,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002780432] [2023-12-02 15:52:53,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:52:53,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:52:53,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:52:54,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2021 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 2001 trivial. 0 not checked. [2023-12-02 15:52:54,333 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:52:54,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002780432] [2023-12-02 15:52:54,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002780432] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:52:54,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:52:54,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:52:54,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164416065] [2023-12-02 15:52:54,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:52:54,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:52:54,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:52:54,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:52:54,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:52:54,335 INFO L87 Difference]: Start difference. First operand 226941 states and 318420 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34)