./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.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_2a6f1d71-fa9a-4e29-b277-0f390cee188f/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6f1d71-fa9a-4e29-b277-0f390cee188f/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6f1d71-fa9a-4e29-b277-0f390cee188f/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6f1d71-fa9a-4e29-b277-0f390cee188f/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6f1d71-fa9a-4e29-b277-0f390cee188f/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6f1d71-fa9a-4e29-b277-0f390cee188f/bin/utaipan-verify-SwPr7d2a91 --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 7c9f1b92adb9acc769d32e01935187ba88bc4e22a7a5cb13176ef92b5b4818de --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:18:40,266 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:18:40,390 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6f1d71-fa9a-4e29-b277-0f390cee188f/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-24 23:18:40,395 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:18:40,396 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:18:40,425 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:18:40,426 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:18:40,427 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:18:40,428 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:18:40,436 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:18:40,436 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:18:40,438 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:18:40,438 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:18:40,440 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:18:40,442 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:18:40,442 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:18:40,442 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:18:40,443 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:18:40,443 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:18:40,444 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:18:40,444 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:18:40,445 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:18:40,446 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:18:40,446 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:18:40,447 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:18:40,447 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:18:40,447 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:18:40,448 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:18:40,448 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:18:40,449 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:18:40,449 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:18:40,450 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:18:40,450 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:18:40,450 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:18:40,451 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:18:40,451 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:18:40,451 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:18:40,452 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:18:40,452 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:18:40,452 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:18:40,452 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:18:40,453 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:18:40,453 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:18:40,453 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:18:40,454 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_2a6f1d71-fa9a-4e29-b277-0f390cee188f/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6f1d71-fa9a-4e29-b277-0f390cee188f/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c9f1b92adb9acc769d32e01935187ba88bc4e22a7a5cb13176ef92b5b4818de [2023-11-24 23:18:40,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:18:40,806 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:18:40,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:18:40,811 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:18:40,812 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:18:40,813 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6f1d71-fa9a-4e29-b277-0f390cee188f/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i [2023-11-24 23:18:44,183 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:18:44,999 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:18:45,000 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6f1d71-fa9a-4e29-b277-0f390cee188f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i [2023-11-24 23:18:45,056 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6f1d71-fa9a-4e29-b277-0f390cee188f/bin/utaipan-verify-SwPr7d2a91/data/d7d0eb0e5/1c3b4c271cc6475c9035cdf8c0501b35/FLAG5dd252e88 [2023-11-24 23:18:45,076 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6f1d71-fa9a-4e29-b277-0f390cee188f/bin/utaipan-verify-SwPr7d2a91/data/d7d0eb0e5/1c3b4c271cc6475c9035cdf8c0501b35 [2023-11-24 23:18:45,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:18:45,088 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:18:45,090 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:18:45,091 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:18:45,097 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:18:45,098 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:18:45" (1/1) ... [2023-11-24 23:18:45,099 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eac9f34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:18:45, skipping insertion in model container [2023-11-24 23:18:45,100 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:18:45" (1/1) ... [2023-11-24 23:18:45,351 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:18:48,884 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_2a6f1d71-fa9a-4e29-b277-0f390cee188f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i[315136,315149] [2023-11-24 23:18:48,889 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_2a6f1d71-fa9a-4e29-b277-0f390cee188f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i[315305,315318] [2023-11-24 23:18:48,890 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_2a6f1d71-fa9a-4e29-b277-0f390cee188f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i[315472,315485] [2023-11-24 23:18:48,891 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_2a6f1d71-fa9a-4e29-b277-0f390cee188f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i[315640,315653] [2023-11-24 23:18:48,931 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:18:48,999 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:18:49,141 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"); [5252] [2023-11-24 23:18:49,143 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)); [5259] [2023-11-24 23:18:49,144 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("":); [5266] [2023-11-24 23:18:49,147 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)); [5302-5303] [2023-11-24 23:18:49,148 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"); [5308-5310] [2023-11-24 23:18:49,163 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)); [5526-5527] [2023-11-24 23:18:49,167 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)); [5560-5561] [2023-11-24 23:18:49,295 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [7910] [2023-11-24 23:18:49,460 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_2a6f1d71-fa9a-4e29-b277-0f390cee188f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i[315136,315149] [2023-11-24 23:18:49,461 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_2a6f1d71-fa9a-4e29-b277-0f390cee188f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i[315305,315318] [2023-11-24 23:18:49,462 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_2a6f1d71-fa9a-4e29-b277-0f390cee188f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i[315472,315485] [2023-11-24 23:18:49,463 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_2a6f1d71-fa9a-4e29-b277-0f390cee188f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i[315640,315653] [2023-11-24 23:18:49,476 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:18:49,722 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:18:49,723 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:18:49 WrapperNode [2023-11-24 23:18:49,723 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:18:49,724 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:18:49,725 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:18:49,725 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:18:49,734 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:18:49" (1/1) ... [2023-11-24 23:18:49,879 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:18:49" (1/1) ... [2023-11-24 23:18:50,171 INFO L138 Inliner]: procedures = 430, calls = 1731, calls flagged for inlining = 202, calls inlined = 186, statements flattened = 4813 [2023-11-24 23:18:50,172 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:18:50,174 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:18:50,174 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:18:50,174 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:18:50,185 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:18:49" (1/1) ... [2023-11-24 23:18:50,186 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:18:49" (1/1) ... [2023-11-24 23:18:50,217 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:18:49" (1/1) ... [2023-11-24 23:18:50,218 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:18:49" (1/1) ... [2023-11-24 23:18:50,348 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:18:49" (1/1) ... [2023-11-24 23:18:50,374 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:18:49" (1/1) ... [2023-11-24 23:18:50,397 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:18:49" (1/1) ... [2023-11-24 23:18:50,425 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:18:49" (1/1) ... [2023-11-24 23:18:50,465 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:18:50,466 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:18:50,466 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:18:50,466 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:18:50,467 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:18:49" (1/1) ... [2023-11-24 23:18:50,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:18:50,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6f1d71-fa9a-4e29-b277-0f390cee188f/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:18:50,501 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6f1d71-fa9a-4e29-b277-0f390cee188f/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:18:50,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6f1d71-fa9a-4e29-b277-0f390cee188f/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:18:50,552 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2023-11-24 23:18:50,553 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2023-11-24 23:18:50,553 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2023-11-24 23:18:50,553 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2023-11-24 23:18:50,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-24 23:18:50,554 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-24 23:18:50,554 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2023-11-24 23:18:50,555 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2023-11-24 23:18:50,555 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-24 23:18:50,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-24 23:18:50,555 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2023-11-24 23:18:50,556 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2023-11-24 23:18:50,557 INFO L130 BoogieDeclarations]: Found specification of procedure init_tfdlist [2023-11-24 23:18:50,557 INFO L138 BoogieDeclarations]: Found implementation of procedure init_tfdlist [2023-11-24 23:18:50,557 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-11-24 23:18:50,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-11-24 23:18:50,560 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2023-11-24 23:18:50,560 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2023-11-24 23:18:50,560 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2023-11-24 23:18:50,560 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2023-11-24 23:18:50,561 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_set_multicast_list [2023-11-24 23:18:50,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_set_multicast_list [2023-11-24 23:18:50,562 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2023-11-24 23:18:50,562 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2023-11-24 23:18:50,563 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2023-11-24 23:18:50,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2023-11-24 23:18:50,563 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2023-11-24 23:18:50,563 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2023-11-24 23:18:50,563 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_rx_clear [2023-11-24 23:18:50,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_rx_clear [2023-11-24 23:18:50,564 INFO L130 BoogieDeclarations]: Found specification of procedure skb_checksum_none_assert [2023-11-24 23:18:50,564 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_checksum_none_assert [2023-11-24 23:18:50,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-11-24 23:18:50,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-11-24 23:18:50,564 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2023-11-24 23:18:50,564 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2023-11-24 23:18:50,565 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2023-11-24 23:18:50,565 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2023-11-24 23:18:50,565 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2023-11-24 23:18:50,565 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2023-11-24 23:18:50,565 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-24 23:18:50,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-24 23:18:50,565 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2023-11-24 23:18:50,566 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2023-11-24 23:18:50,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:18:50,566 INFO L130 BoogieDeclarations]: Found specification of procedure read_phy_bit [2023-11-24 23:18:50,566 INFO L138 BoogieDeclarations]: Found implementation of procedure read_phy_bit [2023-11-24 23:18:50,567 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_remove [2023-11-24 23:18:50,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_remove [2023-11-24 23:18:50,569 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-24 23:18:50,569 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-24 23:18:50,569 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_info [2023-11-24 23:18:50,569 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_info [2023-11-24 23:18:50,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-24 23:18:50,569 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2023-11-24 23:18:50,569 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2023-11-24 23:18:50,570 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_open [2023-11-24 23:18:50,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_open [2023-11-24 23:18:50,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-24 23:18:50,571 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-24 23:18:50,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-11-24 23:18:50,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:18:50,571 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2023-11-24 23:18:50,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2023-11-24 23:18:50,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-24 23:18:50,572 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-24 23:18:50,572 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2023-11-24 23:18:50,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2023-11-24 23:18:50,572 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2023-11-24 23:18:50,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2023-11-24 23:18:50,572 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2023-11-24 23:18:50,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2023-11-24 23:18:50,573 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2023-11-24 23:18:50,574 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2023-11-24 23:18:50,574 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2023-11-24 23:18:50,574 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2023-11-24 23:18:50,574 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2023-11-24 23:18:50,574 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2023-11-24 23:18:50,574 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_get_stats [2023-11-24 23:18:50,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_get_stats [2023-11-24 23:18:50,575 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-11-24 23:18:50,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-11-24 23:18:50,575 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_rxrestore [2023-11-24 23:18:50,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_rxrestore [2023-11-24 23:18:50,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:18:50,575 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2023-11-24 23:18:50,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2023-11-24 23:18:50,576 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2023-11-24 23:18:50,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2023-11-24 23:18:50,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:18:50,576 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-24 23:18:50,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-24 23:18:50,576 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-11-24 23:18:50,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-11-24 23:18:50,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:18:50,577 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2023-11-24 23:18:50,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2023-11-24 23:18:50,578 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-24 23:18:50,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-24 23:18:50,578 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_ioaddr [2023-11-24 23:18:50,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_ioaddr [2023-11-24 23:18:50,578 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-11-24 23:18:50,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-11-24 23:18:50,579 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2023-11-24 23:18:50,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2023-11-24 23:18:50,580 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-24 23:18:50,580 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-24 23:18:50,580 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2023-11-24 23:18:50,580 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2023-11-24 23:18:50,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2023-11-24 23:18:50,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2023-11-24 23:18:50,581 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_get_rxbuff [2023-11-24 23:18:50,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_get_rxbuff [2023-11-24 23:18:50,581 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_write_phy_ctl [2023-11-24 23:18:50,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_write_phy_ctl [2023-11-24 23:18:50,581 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2023-11-24 23:18:50,581 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2023-11-24 23:18:50,581 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-11-24 23:18:50,581 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-11-24 23:18:50,582 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_drive_phy_ctl_low_high [2023-11-24 23:18:50,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_drive_phy_ctl_low_high [2023-11-24 23:18:50,582 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2023-11-24 23:18:50,583 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2023-11-24 23:18:50,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:18:50,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:18:50,583 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_txfree [2023-11-24 23:18:50,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_txfree [2023-11-24 23:18:50,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-24 23:18:50,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-24 23:18:50,585 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-24 23:18:50,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-24 23:18:50,585 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_tx_timeout [2023-11-24 23:18:50,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_tx_timeout [2023-11-24 23:18:50,587 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-11-24 23:18:50,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-11-24 23:18:50,590 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2023-11-24 23:18:50,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2023-11-24 23:18:50,591 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-24 23:18:50,592 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-24 23:18:50,592 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2023-11-24 23:18:50,593 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2023-11-24 23:18:50,593 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-24 23:18:50,595 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-24 23:18:50,600 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_tx_clear [2023-11-24 23:18:50,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_tx_clear [2023-11-24 23:18:50,600 INFO L130 BoogieDeclarations]: Found specification of procedure read_eeprom [2023-11-24 23:18:50,600 INFO L138 BoogieDeclarations]: Found implementation of procedure read_eeprom [2023-11-24 23:18:50,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:18:50,600 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2023-11-24 23:18:50,600 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2023-11-24 23:18:50,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:18:50,601 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_ipg_nic_private [2023-11-24 23:18:50,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_ipg_nic_private [2023-11-24 23:18:50,601 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_rx_free_skb [2023-11-24 23:18:50,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_rx_free_skb [2023-11-24 23:18:50,601 INFO L130 BoogieDeclarations]: Found specification of procedure send_three_state [2023-11-24 23:18:50,601 INFO L138 BoogieDeclarations]: Found implementation of procedure send_three_state [2023-11-24 23:18:50,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-24 23:18:50,602 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-24 23:18:50,602 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-24 23:18:50,602 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2023-11-24 23:18:50,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2023-11-24 23:18:50,602 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-24 23:18:50,602 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-24 23:18:50,602 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-24 23:18:50,602 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-24 23:18:50,603 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-11-24 23:18:50,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-11-24 23:18:50,603 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2023-11-24 23:18:50,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2023-11-24 23:18:50,603 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2023-11-24 23:18:50,603 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2023-11-24 23:18:50,603 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_io_config [2023-11-24 23:18:50,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_io_config [2023-11-24 23:18:50,604 INFO L130 BoogieDeclarations]: Found specification of procedure init_rfdlist [2023-11-24 23:18:50,604 INFO L138 BoogieDeclarations]: Found implementation of procedure init_rfdlist [2023-11-24 23:18:50,604 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2023-11-24 23:18:50,604 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2023-11-24 23:18:50,604 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2023-11-24 23:18:50,604 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2023-11-24 23:18:50,604 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-11-24 23:18:50,604 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-11-24 23:18:50,605 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-11-24 23:18:50,605 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-11-24 23:18:50,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:18:50,605 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2023-11-24 23:18:50,605 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_type_trans [2023-11-24 23:18:50,605 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-24 23:18:50,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-24 23:18:50,605 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nway_reset [2023-11-24 23:18:50,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nway_reset [2023-11-24 23:18:50,606 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_stop [2023-11-24 23:18:50,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_stop [2023-11-24 23:18:50,606 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_config_autoneg [2023-11-24 23:18:50,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_config_autoneg [2023-11-24 23:18:50,606 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_ipg_pci_driver_exit_13_2 [2023-11-24 23:18:50,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_ipg_pci_driver_exit_13_2 [2023-11-24 23:18:50,606 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_ipg_nic_private [2023-11-24 23:18:50,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_ipg_nic_private [2023-11-24 23:18:50,607 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-11-24 23:18:50,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-11-24 23:18:50,607 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_reset [2023-11-24 23:18:50,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_reset [2023-11-24 23:18:50,607 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2023-11-24 23:18:50,607 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2023-11-24 23:18:50,607 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2023-11-24 23:18:50,608 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2023-11-24 23:18:50,608 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2023-11-24 23:18:50,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:18:50,608 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_rx_check_error [2023-11-24 23:18:50,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_rx_check_error [2023-11-24 23:18:50,608 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-11-24 23:18:50,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-11-24 23:18:51,471 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:18:51,479 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:18:52,922 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-24 23:18:57,335 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2023-11-24 23:18:57,460 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:19:00,056 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:19:00,057 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-24 23:19:00,059 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:19:00 BoogieIcfgContainer [2023-11-24 23:19:00,059 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:19:00,062 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:19:00,062 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:19:00,066 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:19:00,066 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:18:45" (1/3) ... [2023-11-24 23:19:00,067 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e38b102 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:19:00, skipping insertion in model container [2023-11-24 23:19:00,067 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:18:49" (2/3) ... [2023-11-24 23:19:00,067 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e38b102 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:19:00, skipping insertion in model container [2023-11-24 23:19:00,067 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:19:00" (3/3) ... [2023-11-24 23:19:00,068 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i [2023-11-24 23:19:00,088 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:19:00,088 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-24 23:19:00,167 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:19:00,174 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;@4e30da, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:19:00,174 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-24 23:19:00,230 INFO L276 IsEmpty]: Start isEmpty. Operand has 1358 states, 787 states have (on average 1.2693773824650572) internal successors, (999), 815 states have internal predecessors, (999), 473 states have call successors, (473), 98 states have call predecessors, (473), 97 states have return successors, (467), 464 states have call predecessors, (467), 467 states have call successors, (467) [2023-11-24 23:19:00,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-24 23:19:00,260 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:19:00,261 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:19:00,261 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-24 23:19:00,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:19:00,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1365557510, now seen corresponding path program 1 times [2023-11-24 23:19:00,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:19:00,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957349458] [2023-11-24 23:19:00,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:19:00,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:19:00,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:19:01,095 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-11-24 23:19:01,096 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:19:01,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957349458] [2023-11-24 23:19:01,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957349458] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:19:01,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:19:01,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:19:01,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62328050] [2023-11-24 23:19:01,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:19:01,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:19:01,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:19:01,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:19:01,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:19:01,149 INFO L87 Difference]: Start difference. First operand has 1358 states, 787 states have (on average 1.2693773824650572) internal successors, (999), 815 states have internal predecessors, (999), 473 states have call successors, (473), 98 states have call predecessors, (473), 97 states have return successors, (467), 464 states have call predecessors, (467), 467 states have call successors, (467) Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-24 23:19:05,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:19:05,022 INFO L93 Difference]: Finished difference Result 3954 states and 5703 transitions. [2023-11-24 23:19:05,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:19:05,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 101 [2023-11-24 23:19:05,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:19:05,082 INFO L225 Difference]: With dead ends: 3954 [2023-11-24 23:19:05,082 INFO L226 Difference]: Without dead ends: 2603 [2023-11-24 23:19:05,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:19:05,103 INFO L413 NwaCegarLoop]: 1656 mSDtfsCounter, 1813 mSDsluCounter, 1612 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1813 SdHoareTripleChecker+Valid, 3268 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:19:05,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1813 Valid, 3268 Invalid, 573 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-24 23:19:05,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2603 states. [2023-11-24 23:19:05,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2603 to 2599. [2023-11-24 23:19:05,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2599 states, 1516 states have (on average 1.2618733509234827) internal successors, (1913), 1569 states have internal predecessors, (1913), 890 states have call successors, (890), 191 states have call predecessors, (890), 190 states have return successors, (886), 880 states have call predecessors, (886), 886 states have call successors, (886) [2023-11-24 23:19:05,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2599 states to 2599 states and 3689 transitions. [2023-11-24 23:19:05,518 INFO L78 Accepts]: Start accepts. Automaton has 2599 states and 3689 transitions. Word has length 101 [2023-11-24 23:19:05,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:19:05,519 INFO L495 AbstractCegarLoop]: Abstraction has 2599 states and 3689 transitions. [2023-11-24 23:19:05,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-24 23:19:05,520 INFO L276 IsEmpty]: Start isEmpty. Operand 2599 states and 3689 transitions. [2023-11-24 23:19:05,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-24 23:19:05,530 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:19:05,531 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:19:05,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:19:05,531 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-24 23:19:05,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:19:05,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1386754247, now seen corresponding path program 1 times [2023-11-24 23:19:05,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:19:05,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164120329] [2023-11-24 23:19:05,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:19:05,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:19:05,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:19:06,030 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-11-24 23:19:06,030 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:19:06,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164120329] [2023-11-24 23:19:06,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164120329] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:19:06,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:19:06,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:19:06,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142950910] [2023-11-24 23:19:06,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:19:06,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:19:06,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:19:06,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:19:06,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:19:06,035 INFO L87 Difference]: Start difference. First operand 2599 states and 3689 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-24 23:19:09,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:19:09,684 INFO L93 Difference]: Finished difference Result 7155 states and 10137 transitions. [2023-11-24 23:19:09,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:19:09,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 105 [2023-11-24 23:19:09,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:19:09,725 INFO L225 Difference]: With dead ends: 7155 [2023-11-24 23:19:09,725 INFO L226 Difference]: Without dead ends: 4573 [2023-11-24 23:19:09,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:19:09,739 INFO L413 NwaCegarLoop]: 1718 mSDtfsCounter, 1454 mSDsluCounter, 1588 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1454 SdHoareTripleChecker+Valid, 3306 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:19:09,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1454 Valid, 3306 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-24 23:19:09,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4573 states. [2023-11-24 23:19:10,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4573 to 4544. [2023-11-24 23:19:10,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4544 states, 2625 states have (on average 1.2525714285714287) internal successors, (3288), 2721 states have internal predecessors, (3288), 1563 states have call successors, (1563), 360 states have call predecessors, (1563), 353 states have return successors, (1579), 1530 states have call predecessors, (1579), 1559 states have call successors, (1579) [2023-11-24 23:19:10,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4544 states to 4544 states and 6430 transitions. [2023-11-24 23:19:10,061 INFO L78 Accepts]: Start accepts. Automaton has 4544 states and 6430 transitions. Word has length 105 [2023-11-24 23:19:10,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:19:10,062 INFO L495 AbstractCegarLoop]: Abstraction has 4544 states and 6430 transitions. [2023-11-24 23:19:10,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-24 23:19:10,062 INFO L276 IsEmpty]: Start isEmpty. Operand 4544 states and 6430 transitions. [2023-11-24 23:19:10,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-24 23:19:10,073 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:19:10,074 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 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] [2023-11-24 23:19:10,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 23:19:10,074 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-24 23:19:10,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:19:10,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1850622423, now seen corresponding path program 1 times [2023-11-24 23:19:10,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:19:10,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814303803] [2023-11-24 23:19:10,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:19:10,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:19:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:19:10,346 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2023-11-24 23:19:10,346 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:19:10,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814303803] [2023-11-24 23:19:10,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814303803] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:19:10,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:19:10,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:19:10,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233247498] [2023-11-24 23:19:10,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:19:10,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:19:10,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:19:10,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:19:10,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:19:10,349 INFO L87 Difference]: Start difference. First operand 4544 states and 6430 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, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-24 23:19:14,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:19:14,167 INFO L93 Difference]: Finished difference Result 13142 states and 18536 transitions. [2023-11-24 23:19:14,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:19:14,168 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, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 145 [2023-11-24 23:19:14,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:19:14,261 INFO L225 Difference]: With dead ends: 13142 [2023-11-24 23:19:14,261 INFO L226 Difference]: Without dead ends: 8615 [2023-11-24 23:19:14,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:19:14,299 INFO L413 NwaCegarLoop]: 1635 mSDtfsCounter, 1726 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1726 SdHoareTripleChecker+Valid, 3218 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:19:14,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1726 Valid, 3218 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-24 23:19:14,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8615 states. [2023-11-24 23:19:15,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8615 to 8584. [2023-11-24 23:19:15,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8584 states, 4945 states have (on average 1.243680485338726) internal successors, (6150), 5129 states have internal predecessors, (6150), 2943 states have call successors, (2943), 708 states have call predecessors, (2943), 693 states have return successors, (2979), 2870 states have call predecessors, (2979), 2939 states have call successors, (2979) [2023-11-24 23:19:15,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8584 states to 8584 states and 12072 transitions. [2023-11-24 23:19:15,147 INFO L78 Accepts]: Start accepts. Automaton has 8584 states and 12072 transitions. Word has length 145 [2023-11-24 23:19:15,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:19:15,151 INFO L495 AbstractCegarLoop]: Abstraction has 8584 states and 12072 transitions. [2023-11-24 23:19:15,153 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, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-24 23:19:15,153 INFO L276 IsEmpty]: Start isEmpty. Operand 8584 states and 12072 transitions. [2023-11-24 23:19:15,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-24 23:19:15,158 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:19:15,159 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 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] [2023-11-24 23:19:15,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 23:19:15,159 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-24 23:19:15,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:19:15,161 INFO L85 PathProgramCache]: Analyzing trace with hash 989907487, now seen corresponding path program 1 times [2023-11-24 23:19:15,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:19:15,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272978125] [2023-11-24 23:19:15,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:19:15,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:19:15,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:19:15,502 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2023-11-24 23:19:15,503 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:19:15,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272978125] [2023-11-24 23:19:15,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272978125] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:19:15,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:19:15,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:19:15,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130014602] [2023-11-24 23:19:15,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:19:15,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:19:15,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:19:15,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:19:15,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:19:15,507 INFO L87 Difference]: Start difference. First operand 8584 states and 12072 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, (23), 2 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-24 23:19:19,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:19:19,395 INFO L93 Difference]: Finished difference Result 15422 states and 21688 transitions. [2023-11-24 23:19:19,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:19:19,397 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, (23), 2 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 143 [2023-11-24 23:19:19,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:19:19,467 INFO L225 Difference]: With dead ends: 15422 [2023-11-24 23:19:19,467 INFO L226 Difference]: Without dead ends: 6855 [2023-11-24 23:19:19,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:19:19,524 INFO L413 NwaCegarLoop]: 2568 mSDtfsCounter, 1354 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1354 SdHoareTripleChecker+Valid, 4154 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:19:19,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1354 Valid, 4154 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-24 23:19:19,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6855 states. [2023-11-24 23:19:20,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6855 to 6824. [2023-11-24 23:19:20,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6824 states, 3986 states have (on average 1.2413447064726544) internal successors, (4948), 4132 states have internal predecessors, (4948), 2281 states have call successors, (2281), 567 states have call predecessors, (2281), 554 states have return successors, (2298), 2215 states have call predecessors, (2298), 2277 states have call successors, (2298) [2023-11-24 23:19:20,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6824 states to 6824 states and 9527 transitions. [2023-11-24 23:19:20,072 INFO L78 Accepts]: Start accepts. Automaton has 6824 states and 9527 transitions. Word has length 143 [2023-11-24 23:19:20,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:19:20,073 INFO L495 AbstractCegarLoop]: Abstraction has 6824 states and 9527 transitions. [2023-11-24 23:19:20,074 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, (23), 2 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-24 23:19:20,074 INFO L276 IsEmpty]: Start isEmpty. Operand 6824 states and 9527 transitions. [2023-11-24 23:19:20,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-24 23:19:20,077 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:19:20,078 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 4, 4, 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] [2023-11-24 23:19:20,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 23:19:20,078 INFO L420 AbstractCegarLoop]: === Iteration 5 === 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-24 23:19:20,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:19:20,079 INFO L85 PathProgramCache]: Analyzing trace with hash 855734335, now seen corresponding path program 1 times [2023-11-24 23:19:20,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:19:20,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137157195] [2023-11-24 23:19:20,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:19:20,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:19:20,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:19:20,806 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2023-11-24 23:19:20,806 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:19:20,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137157195] [2023-11-24 23:19:20,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137157195] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:19:20,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:19:20,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 23:19:20,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161965524] [2023-11-24 23:19:20,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:19:20,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:19:20,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:19:20,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:19:20,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:19:20,811 INFO L87 Difference]: Start difference. First operand 6824 states and 9527 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-24 23:19:23,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:19:26,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:19:26,456 INFO L93 Difference]: Finished difference Result 6830 states and 9532 transitions. [2023-11-24 23:19:26,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:19:26,459 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 143 [2023-11-24 23:19:26,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:19:26,510 INFO L225 Difference]: With dead ends: 6830 [2023-11-24 23:19:26,511 INFO L226 Difference]: Without dead ends: 6828 [2023-11-24 23:19:26,516 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 [2023-11-24 23:19:26,517 INFO L413 NwaCegarLoop]: 1625 mSDtfsCounter, 1857 mSDsluCounter, 3236 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1868 SdHoareTripleChecker+Valid, 4861 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:19:26,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1868 Valid, 4861 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-11-24 23:19:26,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6828 states. [2023-11-24 23:19:26,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6828 to 6828. [2023-11-24 23:19:26,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6828 states, 3989 states have (on average 1.241163198796691) internal successors, (4951), 4135 states have internal predecessors, (4951), 2281 states have call successors, (2281), 568 states have call predecessors, (2281), 555 states have return successors, (2298), 2215 states have call predecessors, (2298), 2277 states have call successors, (2298) [2023-11-24 23:19:26,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6828 states to 6828 states and 9530 transitions. [2023-11-24 23:19:26,973 INFO L78 Accepts]: Start accepts. Automaton has 6828 states and 9530 transitions. Word has length 143 [2023-11-24 23:19:26,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:19:26,975 INFO L495 AbstractCegarLoop]: Abstraction has 6828 states and 9530 transitions. [2023-11-24 23:19:26,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-24 23:19:26,975 INFO L276 IsEmpty]: Start isEmpty. Operand 6828 states and 9530 transitions. [2023-11-24 23:19:26,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-24 23:19:26,979 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:19:26,980 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 4, 4, 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] [2023-11-24 23:19:26,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 23:19:26,980 INFO L420 AbstractCegarLoop]: === Iteration 6 === 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-24 23:19:26,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:19:26,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1505370717, now seen corresponding path program 1 times [2023-11-24 23:19:26,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:19:26,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506203961] [2023-11-24 23:19:26,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:19:26,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:19:27,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:19:27,570 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2023-11-24 23:19:27,570 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:19:27,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506203961] [2023-11-24 23:19:27,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506203961] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:19:27,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:19:27,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 23:19:27,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62015692] [2023-11-24 23:19:27,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:19:27,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:19:27,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:19:27,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:19:27,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:19:27,574 INFO L87 Difference]: Start difference. First operand 6828 states and 9530 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18)