./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-8390-axnet_cs.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_575c31c7-992c-47c9-9941-1b19010e9831/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_575c31c7-992c-47c9-9941-1b19010e9831/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_575c31c7-992c-47c9-9941-1b19010e9831/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_575c31c7-992c-47c9-9941-1b19010e9831/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_575c31c7-992c-47c9-9941-1b19010e9831/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_575c31c7-992c-47c9-9941-1b19010e9831/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 6b81be647295ba0700d02fa1d093d31284b02ba80deefc4d677fbd988693200b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:09:48,031 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:09:48,110 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_575c31c7-992c-47c9-9941-1b19010e9831/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 17:09:48,114 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:09:48,115 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:09:48,148 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:09:48,148 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:09:48,149 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:09:48,149 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:09:48,150 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:09:48,150 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:09:48,151 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:09:48,151 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:09:48,152 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 17:09:48,152 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:09:48,153 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:09:48,153 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 17:09:48,154 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 17:09:48,154 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:09:48,155 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 17:09:48,155 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 17:09:48,156 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 17:09:48,157 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:09:48,157 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:09:48,158 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 17:09:48,158 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:09:48,159 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:09:48,159 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:09:48,159 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:09:48,160 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:09:48,160 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:09:48,161 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:09:48,161 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:09:48,161 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:09:48,161 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:09:48,162 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:09:48,162 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:09:48,162 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 17:09:48,162 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 17:09:48,162 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 17:09:48,163 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:09:48,163 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 17:09:48,163 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:09:48,163 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:09:48,164 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_575c31c7-992c-47c9-9941-1b19010e9831/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_575c31c7-992c-47c9-9941-1b19010e9831/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b81be647295ba0700d02fa1d093d31284b02ba80deefc4d677fbd988693200b [2023-12-02 17:09:48,392 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:09:48,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:09:48,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:09:48,435 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:09:48,435 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:09:48,436 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_575c31c7-992c-47c9-9941-1b19010e9831/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i [2023-12-02 17:09:51,101 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:09:51,562 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:09:51,563 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_575c31c7-992c-47c9-9941-1b19010e9831/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i [2023-12-02 17:09:51,603 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_575c31c7-992c-47c9-9941-1b19010e9831/bin/utaipan-verify-nQ1chXbOIh/data/a5dbb77dc/bf77b04a3ccb47228c765e94c3193a68/FLAGbe83f5b75 [2023-12-02 17:09:51,617 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_575c31c7-992c-47c9-9941-1b19010e9831/bin/utaipan-verify-nQ1chXbOIh/data/a5dbb77dc/bf77b04a3ccb47228c765e94c3193a68 [2023-12-02 17:09:51,620 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:09:51,621 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:09:51,623 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:09:51,623 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:09:51,628 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:09:51,629 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:09:51" (1/1) ... [2023-12-02 17:09:51,630 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bccfaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:09:51, skipping insertion in model container [2023-12-02 17:09:51,630 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:09:51" (1/1) ... [2023-12-02 17:09:51,776 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:09:53,951 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_575c31c7-992c-47c9-9941-1b19010e9831/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315060,315073] [2023-12-02 17:09:53,955 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_575c31c7-992c-47c9-9941-1b19010e9831/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315229,315242] [2023-12-02 17:09:53,956 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_575c31c7-992c-47c9-9941-1b19010e9831/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315396,315409] [2023-12-02 17:09:53,956 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_575c31c7-992c-47c9-9941-1b19010e9831/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315564,315577] [2023-12-02 17:09:53,973 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:09:54,018 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:09:54,126 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"); [5461] [2023-12-02 17:09:54,127 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)); [5468] [2023-12-02 17:09:54,128 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("":); [5475] [2023-12-02 17:09:54,131 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outb %b0, %w1": : "a" (value), "Nd" (port)); [5569] [2023-12-02 17:09:54,131 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inb %w1, %b0": "=a" (value): "Nd" (port)); [5577] [2023-12-02 17:09:54,132 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inw %w1, %w0": "=a" (value): "Nd" (port)); [5608] [2023-12-02 17:09:54,132 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("rep; outsw": "+S" (addr), "+c" (count): "d" (port)); [5615] [2023-12-02 17:09:54,133 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("rep; insw": "+D" (addr), "+c" (count): "d" (port)); [5622] [2023-12-02 17:09:54,257 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_575c31c7-992c-47c9-9941-1b19010e9831/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315060,315073] [2023-12-02 17:09:54,257 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_575c31c7-992c-47c9-9941-1b19010e9831/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315229,315242] [2023-12-02 17:09:54,258 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_575c31c7-992c-47c9-9941-1b19010e9831/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315396,315409] [2023-12-02 17:09:54,258 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_575c31c7-992c-47c9-9941-1b19010e9831/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315564,315577] [2023-12-02 17:09:54,264 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:09:54,412 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:09:54,412 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:09:54 WrapperNode [2023-12-02 17:09:54,413 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:09:54,414 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:09:54,414 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:09:54,414 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:09:54,421 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:09:54" (1/1) ... [2023-12-02 17:09:54,499 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:09:54" (1/1) ... [2023-12-02 17:09:54,652 INFO L138 Inliner]: procedures = 370, calls = 2290, calls flagged for inlining = 174, calls inlined = 154, statements flattened = 4652 [2023-12-02 17:09:54,653 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:09:54,654 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:09:54,654 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:09:54,654 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:09:54,663 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:09:54" (1/1) ... [2023-12-02 17:09:54,663 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:09:54" (1/1) ... [2023-12-02 17:09:54,688 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:09:54" (1/1) ... [2023-12-02 17:09:54,688 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:09:54" (1/1) ... [2023-12-02 17:09:54,769 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:09:54" (1/1) ... [2023-12-02 17:09:54,788 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:09:54" (1/1) ... [2023-12-02 17:09:54,810 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:09:54" (1/1) ... [2023-12-02 17:09:54,823 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:09:54" (1/1) ... [2023-12-02 17:09:54,852 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:09:54,853 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:09:54,853 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:09:54,853 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:09:54,854 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:09:54" (1/1) ... [2023-12-02 17:09:54,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:09:54,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_575c31c7-992c-47c9-9941-1b19010e9831/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:09:54,881 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_575c31c7-992c-47c9-9941-1b19010e9831/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:09:54,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_575c31c7-992c-47c9-9941-1b19010e9831/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:09:54,952 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_page_lock_of_ei_device [2023-12-02 17:09:54,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_page_lock_of_ei_device [2023-12-02 17:09:54,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-12-02 17:09:54,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-12-02 17:09:54,953 INFO L130 BoogieDeclarations]: Found specification of procedure axnet_detach [2023-12-02 17:09:54,954 INFO L138 BoogieDeclarations]: Found implementation of procedure axnet_detach [2023-12-02 17:09:54,954 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-12-02 17:09:54,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-12-02 17:09:54,954 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-12-02 17:09:54,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-12-02 17:09:54,955 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2023-12-02 17:09:54,955 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2023-12-02 17:09:54,955 INFO L130 BoogieDeclarations]: Found specification of procedure AX88190_init [2023-12-02 17:09:54,955 INFO L138 BoogieDeclarations]: Found implementation of procedure AX88190_init [2023-12-02 17:09:54,956 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2023-12-02 17:09:54,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2023-12-02 17:09:54,956 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-12-02 17:09:54,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-12-02 17:09:54,956 INFO L130 BoogieDeclarations]: Found specification of procedure slow_down_io [2023-12-02 17:09:54,956 INFO L138 BoogieDeclarations]: Found implementation of procedure slow_down_io [2023-12-02 17:09:54,956 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2023-12-02 17:09:54,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2023-12-02 17:09:54,957 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_70 [2023-12-02 17:09:54,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_70 [2023-12-02 17:09:54,957 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-12-02 17:09:54,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-12-02 17:09:54,957 INFO L130 BoogieDeclarations]: Found specification of procedure ei_receive [2023-12-02 17:09:54,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ei_receive [2023-12-02 17:09:54,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 17:09:54,958 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 17:09:54,958 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_axnet_cs_driver_exit_14_2 [2023-12-02 17:09:54,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_axnet_cs_driver_exit_14_2 [2023-12-02 17:09:54,958 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-12-02 17:09:54,958 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-12-02 17:09:54,958 INFO L130 BoogieDeclarations]: Found specification of procedure axnet_release [2023-12-02 17:09:54,959 INFO L138 BoogieDeclarations]: Found implementation of procedure axnet_release [2023-12-02 17:09:54,959 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2023-12-02 17:09:54,959 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2023-12-02 17:09:54,959 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_write_config_byte [2023-12-02 17:09:54,959 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_write_config_byte [2023-12-02 17:09:54,959 INFO L130 BoogieDeclarations]: Found specification of procedure insw [2023-12-02 17:09:54,959 INFO L138 BoogieDeclarations]: Found implementation of procedure insw [2023-12-02 17:09:54,960 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_netdev_dbg [2023-12-02 17:09:54,960 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_netdev_dbg [2023-12-02 17:09:54,960 INFO L130 BoogieDeclarations]: Found specification of procedure PRIV [2023-12-02 17:09:54,960 INFO L138 BoogieDeclarations]: Found implementation of procedure PRIV [2023-12-02 17:09:54,960 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2023-12-02 17:09:54,961 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2023-12-02 17:09:54,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 17:09:54,961 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2023-12-02 17:09:54,961 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2023-12-02 17:09:54,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 17:09:54,961 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-12-02 17:09:54,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-12-02 17:09:54,961 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2023-12-02 17:09:54,962 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2023-12-02 17:09:54,962 INFO L130 BoogieDeclarations]: Found specification of procedure set_multicast_list [2023-12-02 17:09:54,962 INFO L138 BoogieDeclarations]: Found implementation of procedure set_multicast_list [2023-12-02 17:09:54,962 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-12-02 17:09:54,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-12-02 17:09:54,962 INFO L130 BoogieDeclarations]: Found specification of procedure NS8390_trigger_send [2023-12-02 17:09:54,962 INFO L138 BoogieDeclarations]: Found implementation of procedure NS8390_trigger_send [2023-12-02 17:09:54,963 INFO L130 BoogieDeclarations]: Found specification of procedure ei_tx_intr [2023-12-02 17:09:54,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ei_tx_intr [2023-12-02 17:09:54,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 17:09:54,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 17:09:54,963 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-12-02 17:09:54,963 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-12-02 17:09:54,963 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2023-12-02 17:09:54,963 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2023-12-02 17:09:54,964 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-12-02 17:09:54,964 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-12-02 17:09:54,964 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2023-12-02 17:09:54,964 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2023-12-02 17:09:54,964 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-12-02 17:09:54,964 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-12-02 17:09:54,964 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_info [2023-12-02 17:09:54,965 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_info [2023-12-02 17:09:54,965 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-12-02 17:09:54,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-12-02 17:09:54,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-12-02 17:09:54,965 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_sync [2023-12-02 17:09:54,965 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_sync [2023-12-02 17:09:54,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 17:09:54,966 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-12-02 17:09:54,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-12-02 17:09:54,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 17:09:54,966 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2023-12-02 17:09:54,966 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2023-12-02 17:09:54,966 INFO L130 BoogieDeclarations]: Found specification of procedure ei_irq_wrapper [2023-12-02 17:09:54,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ei_irq_wrapper [2023-12-02 17:09:54,967 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2023-12-02 17:09:54,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2023-12-02 17:09:54,967 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-12-02 17:09:54,967 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-12-02 17:09:54,967 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2023-12-02 17:09:54,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2023-12-02 17:09:54,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 17:09:54,968 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-12-02 17:09:54,968 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-12-02 17:09:54,968 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-12-02 17:09:54,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-12-02 17:09:54,969 INFO L130 BoogieDeclarations]: Found specification of procedure axnet_reset_8390 [2023-12-02 17:09:54,969 INFO L138 BoogieDeclarations]: Found implementation of procedure axnet_reset_8390 [2023-12-02 17:09:54,969 INFO L130 BoogieDeclarations]: Found specification of procedure axnet_tx_timeout [2023-12-02 17:09:54,969 INFO L138 BoogieDeclarations]: Found implementation of procedure axnet_tx_timeout [2023-12-02 17:09:54,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-12-02 17:09:54,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-12-02 17:09:54,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 17:09:54,970 INFO L130 BoogieDeclarations]: Found specification of procedure inb_p [2023-12-02 17:09:54,970 INFO L138 BoogieDeclarations]: Found implementation of procedure inb_p [2023-12-02 17:09:54,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2023-12-02 17:09:54,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2023-12-02 17:09:54,970 INFO L130 BoogieDeclarations]: Found specification of procedure axnet_cs_driver_exit [2023-12-02 17:09:54,970 INFO L138 BoogieDeclarations]: Found implementation of procedure axnet_cs_driver_exit [2023-12-02 17:09:54,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 17:09:54,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-12-02 17:09:54,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-12-02 17:09:54,971 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-12-02 17:09:54,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-12-02 17:09:54,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 17:09:54,971 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-12-02 17:09:54,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-12-02 17:09:54,972 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-12-02 17:09:54,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-12-02 17:09:54,972 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2023-12-02 17:09:54,972 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2023-12-02 17:09:54,972 INFO L130 BoogieDeclarations]: Found specification of procedure outb_p [2023-12-02 17:09:54,972 INFO L138 BoogieDeclarations]: Found implementation of procedure outb_p [2023-12-02 17:09:54,973 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2023-12-02 17:09:54,973 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2023-12-02 17:09:54,973 INFO L130 BoogieDeclarations]: Found specification of procedure do_set_multicast_list [2023-12-02 17:09:54,973 INFO L138 BoogieDeclarations]: Found implementation of procedure do_set_multicast_list [2023-12-02 17:09:54,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 17:09:54,973 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-12-02 17:09:54,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-12-02 17:09:54,974 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2023-12-02 17:09:54,974 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2023-12-02 17:09:54,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:09:54,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:09:55,509 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:09:55,512 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:09:55,744 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-12-02 17:10:00,889 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2023-12-02 17:10:01,001 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:10:02,110 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:10:02,110 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 17:10:02,112 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:10:02 BoogieIcfgContainer [2023-12-02 17:10:02,112 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:10:02,114 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:10:02,114 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:10:02,116 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:10:02,116 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:09:51" (1/3) ... [2023-12-02 17:10:02,117 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7847433 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:10:02, skipping insertion in model container [2023-12-02 17:10:02,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:09:54" (2/3) ... [2023-12-02 17:10:02,117 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7847433 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:10:02, skipping insertion in model container [2023-12-02 17:10:02,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:10:02" (3/3) ... [2023-12-02 17:10:02,119 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i [2023-12-02 17:10:02,134 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:10:02,135 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-12-02 17:10:02,199 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:10:02,205 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;@4e9244b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:10:02,205 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-02 17:10:02,213 INFO L276 IsEmpty]: Start isEmpty. Operand has 1070 states, 607 states have (on average 1.3031301482701811) internal successors, (791), 631 states have internal predecessors, (791), 400 states have call successors, (400), 62 states have call predecessors, (400), 61 states have return successors, (394), 386 states have call predecessors, (394), 394 states have call successors, (394) [2023-12-02 17:10:02,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-02 17:10:02,229 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:10:02,229 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:10:02,230 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)] === [2023-12-02 17:10:02,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:10:02,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1015143908, now seen corresponding path program 1 times [2023-12-02 17:10:02,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:10:02,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145811040] [2023-12-02 17:10:02,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:10:02,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:10:02,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:10:02,888 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2023-12-02 17:10:02,888 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:10:02,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145811040] [2023-12-02 17:10:02,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145811040] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:10:02,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:10:02,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:10:02,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092092307] [2023-12-02 17:10:02,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:10:02,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:10:02,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:10:02,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:10:02,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:10:02,922 INFO L87 Difference]: Start difference. First operand has 1070 states, 607 states have (on average 1.3031301482701811) internal successors, (791), 631 states have internal predecessors, (791), 400 states have call successors, (400), 62 states have call predecessors, (400), 61 states have return successors, (394), 386 states have call predecessors, (394), 394 states have call successors, (394) Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-02 17:10:05,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:10:05,630 INFO L93 Difference]: Finished difference Result 3100 states and 4667 transitions. [2023-12-02 17:10:05,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:10:05,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 91 [2023-12-02 17:10:05,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:10:05,665 INFO L225 Difference]: With dead ends: 3100 [2023-12-02 17:10:05,665 INFO L226 Difference]: Without dead ends: 2035 [2023-12-02 17:10:05,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:10:05,679 INFO L413 NwaCegarLoop]: 1383 mSDtfsCounter, 1468 mSDsluCounter, 1339 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 2722 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-02 17:10:05,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1468 Valid, 2722 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-02 17:10:05,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2035 states. [2023-12-02 17:10:05,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2035 to 2031. [2023-12-02 17:10:05,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2031 states, 1163 states have (on average 1.294926913155632) internal successors, (1506), 1208 states have internal predecessors, (1506), 747 states have call successors, (747), 119 states have call predecessors, (747), 118 states have return successors, (743), 727 states have call predecessors, (743), 743 states have call successors, (743) [2023-12-02 17:10:05,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2031 states to 2031 states and 2996 transitions. [2023-12-02 17:10:05,927 INFO L78 Accepts]: Start accepts. Automaton has 2031 states and 2996 transitions. Word has length 91 [2023-12-02 17:10:05,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:10:05,928 INFO L495 AbstractCegarLoop]: Abstraction has 2031 states and 2996 transitions. [2023-12-02 17:10:05,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-02 17:10:05,929 INFO L276 IsEmpty]: Start isEmpty. Operand 2031 states and 2996 transitions. [2023-12-02 17:10:05,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-02 17:10:05,936 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:10:05,936 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:10:05,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 17:10:05,937 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)] === [2023-12-02 17:10:05,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:10:05,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1365890016, now seen corresponding path program 1 times [2023-12-02 17:10:05,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:10:05,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995348414] [2023-12-02 17:10:05,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:10:05,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:10:06,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:10:06,260 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2023-12-02 17:10:06,260 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:10:06,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995348414] [2023-12-02 17:10:06,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995348414] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:10:06,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:10:06,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:10:06,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219268327] [2023-12-02 17:10:06,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:10:06,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:10:06,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:10:06,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:10:06,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:10:06,265 INFO L87 Difference]: Start difference. First operand 2031 states and 2996 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-02 17:10:07,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:10:09,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:10:09,323 INFO L93 Difference]: Finished difference Result 5731 states and 8418 transitions. [2023-12-02 17:10:09,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:10:09,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 99 [2023-12-02 17:10:09,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:10:09,348 INFO L225 Difference]: With dead ends: 5731 [2023-12-02 17:10:09,348 INFO L226 Difference]: Without dead ends: 3715 [2023-12-02 17:10:09,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:10:09,358 INFO L413 NwaCegarLoop]: 1430 mSDtfsCounter, 1261 mSDsluCounter, 1326 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1261 SdHoareTripleChecker+Valid, 2756 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-02 17:10:09,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1261 Valid, 2756 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-02 17:10:09,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3715 states. [2023-12-02 17:10:09,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3715 to 3684. [2023-12-02 17:10:09,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3684 states, 2108 states have (on average 1.2851043643263758) internal successors, (2709), 2190 states have internal predecessors, (2709), 1342 states have call successors, (1342), 230 states have call predecessors, (1342), 231 states have return successors, (1344), 1309 states have call predecessors, (1344), 1338 states have call successors, (1344) [2023-12-02 17:10:09,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3684 states to 3684 states and 5395 transitions. [2023-12-02 17:10:09,604 INFO L78 Accepts]: Start accepts. Automaton has 3684 states and 5395 transitions. Word has length 99 [2023-12-02 17:10:09,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:10:09,604 INFO L495 AbstractCegarLoop]: Abstraction has 3684 states and 5395 transitions. [2023-12-02 17:10:09,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-02 17:10:09,605 INFO L276 IsEmpty]: Start isEmpty. Operand 3684 states and 5395 transitions. [2023-12-02 17:10:09,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-02 17:10:09,607 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:10:09,608 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 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] [2023-12-02 17:10:09,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 17:10:09,608 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)] === [2023-12-02 17:10:09,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:10:09,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1701766531, now seen corresponding path program 1 times [2023-12-02 17:10:09,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:10:09,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588108001] [2023-12-02 17:10:09,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:10:09,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:10:09,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:10:10,059 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-02 17:10:10,059 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:10:10,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588108001] [2023-12-02 17:10:10,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588108001] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:10:10,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:10:10,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:10:10,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203681346] [2023-12-02 17:10:10,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:10:10,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:10:10,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:10:10,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:10:10,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:10:10,062 INFO L87 Difference]: Start difference. First operand 3684 states and 5395 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-02 17:10:12,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:10:13,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:10:13,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:10:13,786 INFO L93 Difference]: Finished difference Result 10072 states and 14685 transitions. [2023-12-02 17:10:13,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:10:13,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 103 [2023-12-02 17:10:13,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:10:13,841 INFO L225 Difference]: With dead ends: 10072 [2023-12-02 17:10:13,841 INFO L226 Difference]: Without dead ends: 6403 [2023-12-02 17:10:13,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:10:13,863 INFO L413 NwaCegarLoop]: 1376 mSDtfsCounter, 1213 mSDsluCounter, 1332 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1213 SdHoareTripleChecker+Valid, 2708 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-02 17:10:13,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1213 Valid, 2708 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-02 17:10:13,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6403 states. [2023-12-02 17:10:14,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6403 to 6370. [2023-12-02 17:10:14,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6370 states, 3644 states have (on average 1.280735455543359) internal successors, (4667), 3782 states have internal predecessors, (4667), 2292 states have call successors, (2292), 434 states have call predecessors, (2292), 431 states have return successors, (2300), 2219 states have call predecessors, (2300), 2288 states have call successors, (2300) [2023-12-02 17:10:14,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6370 states to 6370 states and 9259 transitions. [2023-12-02 17:10:14,373 INFO L78 Accepts]: Start accepts. Automaton has 6370 states and 9259 transitions. Word has length 103 [2023-12-02 17:10:14,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:10:14,373 INFO L495 AbstractCegarLoop]: Abstraction has 6370 states and 9259 transitions. [2023-12-02 17:10:14,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-02 17:10:14,374 INFO L276 IsEmpty]: Start isEmpty. Operand 6370 states and 9259 transitions. [2023-12-02 17:10:14,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-02 17:10:14,376 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:10:14,377 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:10:14,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 17:10:14,377 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)] === [2023-12-02 17:10:14,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:10:14,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1789860430, now seen corresponding path program 1 times [2023-12-02 17:10:14,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:10:14,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195066036] [2023-12-02 17:10:14,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:10:14,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:10:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:10:14,860 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2023-12-02 17:10:14,860 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:10:14,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195066036] [2023-12-02 17:10:14,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195066036] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:10:14,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:10:14,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:10:14,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517566907] [2023-12-02 17:10:14,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:10:14,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:10:14,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:10:14,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:10:14,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:10:14,863 INFO L87 Difference]: Start difference. First operand 6370 states and 9259 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-02 17:10:17,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:10:17,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:10:17,258 INFO L93 Difference]: Finished difference Result 11245 states and 16319 transitions. [2023-12-02 17:10:17,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:10:17,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 122 [2023-12-02 17:10:17,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:10:17,289 INFO L225 Difference]: With dead ends: 11245 [2023-12-02 17:10:17,289 INFO L226 Difference]: Without dead ends: 4890 [2023-12-02 17:10:17,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:10:17,311 INFO L413 NwaCegarLoop]: 1803 mSDtfsCounter, 1386 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1386 SdHoareTripleChecker+Valid, 2482 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:10:17,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1386 Valid, 2482 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-02 17:10:17,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4890 states. [2023-12-02 17:10:17,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4890 to 4851. [2023-12-02 17:10:17,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4851 states, 2818 states have (on average 1.2732434350603266) internal successors, (3588), 2962 states have internal predecessors, (3588), 1675 states have call successors, (1675), 394 states have call predecessors, (1675), 355 states have return successors, (1707), 1529 states have call predecessors, (1707), 1671 states have call successors, (1707) [2023-12-02 17:10:17,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4851 states to 4851 states and 6970 transitions. [2023-12-02 17:10:17,585 INFO L78 Accepts]: Start accepts. Automaton has 4851 states and 6970 transitions. Word has length 122 [2023-12-02 17:10:17,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:10:17,585 INFO L495 AbstractCegarLoop]: Abstraction has 4851 states and 6970 transitions. [2023-12-02 17:10:17,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-02 17:10:17,585 INFO L276 IsEmpty]: Start isEmpty. Operand 4851 states and 6970 transitions. [2023-12-02 17:10:17,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-02 17:10:17,587 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:10:17,587 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 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] [2023-12-02 17:10:17,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 17:10:17,587 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)] === [2023-12-02 17:10:17,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:10:17,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1598379610, now seen corresponding path program 1 times [2023-12-02 17:10:17,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:10:17,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82630672] [2023-12-02 17:10:17,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:10:17,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:10:17,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:10:18,096 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2023-12-02 17:10:18,096 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:10:18,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82630672] [2023-12-02 17:10:18,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82630672] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:10:18,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:10:18,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:10:18,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827145593] [2023-12-02 17:10:18,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:10:18,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:10:18,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:10:18,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:10:18,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:10:18,100 INFO L87 Difference]: Start difference. First operand 4851 states and 6970 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-02 17:10:20,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:10:21,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:10:23,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:10:23,160 INFO L93 Difference]: Finished difference Result 4857 states and 6975 transitions. [2023-12-02 17:10:23,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:10:23,161 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 133 [2023-12-02 17:10:23,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:10:23,193 INFO L225 Difference]: With dead ends: 4857 [2023-12-02 17:10:23,194 INFO L226 Difference]: Without dead ends: 4855 [2023-12-02 17:10:23,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 17:10:23,196 INFO L413 NwaCegarLoop]: 1352 mSDtfsCounter, 1511 mSDsluCounter, 2690 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 4042 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-12-02 17:10:23,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1522 Valid, 4042 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-12-02 17:10:23,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4855 states. [2023-12-02 17:10:23,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4855 to 4855. [2023-12-02 17:10:23,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4855 states, 2821 states have (on average 1.2729528535980148) internal successors, (3591), 2965 states have internal predecessors, (3591), 1675 states have call successors, (1675), 395 states have call predecessors, (1675), 356 states have return successors, (1707), 1529 states have call predecessors, (1707), 1671 states have call successors, (1707) [2023-12-02 17:10:23,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4855 states to 4855 states and 6973 transitions. [2023-12-02 17:10:23,543 INFO L78 Accepts]: Start accepts. Automaton has 4855 states and 6973 transitions. Word has length 133 [2023-12-02 17:10:23,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:10:23,544 INFO L495 AbstractCegarLoop]: Abstraction has 4855 states and 6973 transitions. [2023-12-02 17:10:23,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-02 17:10:23,545 INFO L276 IsEmpty]: Start isEmpty. Operand 4855 states and 6973 transitions. [2023-12-02 17:10:23,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-02 17:10:23,548 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:10:23,548 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 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] [2023-12-02 17:10:23,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 17:10:23,548 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)] === [2023-12-02 17:10:23,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:10:23,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1754514214, now seen corresponding path program 1 times [2023-12-02 17:10:23,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:10:23,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206675214] [2023-12-02 17:10:23,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:10:23,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:10:23,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:10:24,171 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2023-12-02 17:10:24,171 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:10:24,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206675214] [2023-12-02 17:10:24,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206675214] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:10:24,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:10:24,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:10:24,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278190880] [2023-12-02 17:10:24,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:10:24,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:10:24,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:10:24,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:10:24,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:10:24,173 INFO L87 Difference]: Start difference. First operand 4855 states and 6973 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 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) [2023-12-02 17:10:26,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:10:28,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:10:28,197 INFO L93 Difference]: Finished difference Result 4861 states and 6978 transitions. [2023-12-02 17:10:28,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:10:28,197 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 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 138 [2023-12-02 17:10:28,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:10:28,229 INFO L225 Difference]: With dead ends: 4861 [2023-12-02 17:10:28,230 INFO L226 Difference]: Without dead ends: 4859 [2023-12-02 17:10:28,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 17:10:28,233 INFO L413 NwaCegarLoop]: 1355 mSDtfsCounter, 1506 mSDsluCounter, 2690 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 4045 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-02 17:10:28,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 4045 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-02 17:10:28,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4859 states. [2023-12-02 17:10:28,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4859 to 4859. [2023-12-02 17:10:28,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4859 states, 2824 states have (on average 1.2726628895184136) internal successors, (3594), 2968 states have internal predecessors, (3594), 1675 states have call successors, (1675), 396 states have call predecessors, (1675), 357 states have return successors, (1707), 1529 states have call predecessors, (1707), 1671 states have call successors, (1707) [2023-12-02 17:10:28,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4859 states to 4859 states and 6976 transitions. [2023-12-02 17:10:28,514 INFO L78 Accepts]: Start accepts. Automaton has 4859 states and 6976 transitions. Word has length 138 [2023-12-02 17:10:28,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:10:28,514 INFO L495 AbstractCegarLoop]: Abstraction has 4859 states and 6976 transitions. [2023-12-02 17:10:28,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 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) [2023-12-02 17:10:28,514 INFO L276 IsEmpty]: Start isEmpty. Operand 4859 states and 6976 transitions. [2023-12-02 17:10:28,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-02 17:10:28,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:10:28,517 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:10:28,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 17:10:28,517 INFO L420 AbstractCegarLoop]: === Iteration 7 === 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)] === [2023-12-02 17:10:28,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:10:28,518 INFO L85 PathProgramCache]: Analyzing trace with hash -41084519, now seen corresponding path program 1 times [2023-12-02 17:10:28,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:10:28,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488592619] [2023-12-02 17:10:28,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:10:28,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:10:28,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:10:28,997 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2023-12-02 17:10:28,997 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:10:28,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488592619] [2023-12-02 17:10:28,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488592619] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:10:28,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:10:28,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:10:28,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134422787] [2023-12-02 17:10:28,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:10:28,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:10:28,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:10:28,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:10:28,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:10:28,999 INFO L87 Difference]: Start difference. First operand 4859 states and 6976 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-02 17:10:32,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:10:32,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:10:32,741 INFO L93 Difference]: Finished difference Result 4865 states and 6981 transitions. [2023-12-02 17:10:32,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:10:32,741 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 151 [2023-12-02 17:10:32,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:10:32,765 INFO L225 Difference]: With dead ends: 4865 [2023-12-02 17:10:32,766 INFO L226 Difference]: Without dead ends: 4863 [2023-12-02 17:10:32,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 17:10:32,769 INFO L413 NwaCegarLoop]: 1355 mSDtfsCounter, 1505 mSDsluCounter, 2690 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 4045 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-02 17:10:32,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 4045 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-02 17:10:32,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4863 states. [2023-12-02 17:10:33,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4863 to 4863. [2023-12-02 17:10:33,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4863 states, 2827 states have (on average 1.272373540856031) internal successors, (3597), 2971 states have internal predecessors, (3597), 1675 states have call successors, (1675), 397 states have call predecessors, (1675), 358 states have return successors, (1707), 1529 states have call predecessors, (1707), 1671 states have call successors, (1707) [2023-12-02 17:10:33,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4863 states to 4863 states and 6979 transitions. [2023-12-02 17:10:33,165 INFO L78 Accepts]: Start accepts. Automaton has 4863 states and 6979 transitions. Word has length 151 [2023-12-02 17:10:33,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:10:33,166 INFO L495 AbstractCegarLoop]: Abstraction has 4863 states and 6979 transitions. [2023-12-02 17:10:33,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-02 17:10:33,166 INFO L276 IsEmpty]: Start isEmpty. Operand 4863 states and 6979 transitions. [2023-12-02 17:10:33,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-02 17:10:33,169 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:10:33,170 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 4, 4, 4, 3, 3, 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] [2023-12-02 17:10:33,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 17:10:33,170 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 17:10:33,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:10:33,171 INFO L85 PathProgramCache]: Analyzing trace with hash 441533286, now seen corresponding path program 1 times [2023-12-02 17:10:33,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:10:33,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145236188] [2023-12-02 17:10:33,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:10:33,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:10:33,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:10:33,703 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2023-12-02 17:10:33,703 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:10:33,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145236188] [2023-12-02 17:10:33,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145236188] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:10:33,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:10:33,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:10:33,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897007955] [2023-12-02 17:10:33,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:10:33,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:10:33,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:10:33,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:10:33,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:10:33,706 INFO L87 Difference]: Start difference. First operand 4863 states and 6979 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 17:10:36,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:10:36,730 INFO L93 Difference]: Finished difference Result 4869 states and 6984 transitions. [2023-12-02 17:10:36,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:10:36,731 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 148 [2023-12-02 17:10:36,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:10:36,753 INFO L225 Difference]: With dead ends: 4869 [2023-12-02 17:10:36,753 INFO L226 Difference]: Without dead ends: 4867 [2023-12-02 17:10:36,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 17:10:36,757 INFO L413 NwaCegarLoop]: 1355 mSDtfsCounter, 1506 mSDsluCounter, 2690 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 4045 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-02 17:10:36,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 4045 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-02 17:10:36,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4867 states. [2023-12-02 17:10:37,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4867 to 4867. [2023-12-02 17:10:37,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4867 states, 2830 states have (on average 1.2720848056537102) internal successors, (3600), 2974 states have internal predecessors, (3600), 1675 states have call successors, (1675), 398 states have call predecessors, (1675), 359 states have return successors, (1707), 1529 states have call predecessors, (1707), 1671 states have call successors, (1707) [2023-12-02 17:10:37,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4867 states to 4867 states and 6982 transitions. [2023-12-02 17:10:37,128 INFO L78 Accepts]: Start accepts. Automaton has 4867 states and 6982 transitions. Word has length 148 [2023-12-02 17:10:37,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:10:37,129 INFO L495 AbstractCegarLoop]: Abstraction has 4867 states and 6982 transitions. [2023-12-02 17:10:37,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 17:10:37,130 INFO L276 IsEmpty]: Start isEmpty. Operand 4867 states and 6982 transitions. [2023-12-02 17:10:37,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-02 17:10:37,133 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:10:37,133 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:10:37,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 17:10:37,134 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 17:10:37,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:10:37,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1410088473, now seen corresponding path program 1 times [2023-12-02 17:10:37,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:10:37,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543187198] [2023-12-02 17:10:37,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:10:37,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:10:37,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:10:37,737 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2023-12-02 17:10:37,737 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:10:37,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543187198] [2023-12-02 17:10:37,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543187198] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:10:37,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:10:37,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:10:37,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59426721] [2023-12-02 17:10:37,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:10:37,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:10:37,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:10:37,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:10:37,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:10:37,740 INFO L87 Difference]: Start difference. First operand 4867 states and 6982 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-12-02 17:10:40,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:10:41,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:10:41,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:10:41,917 INFO L93 Difference]: Finished difference Result 4873 states and 6987 transitions. [2023-12-02 17:10:41,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:10:41,918 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 161 [2023-12-02 17:10:41,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:10:41,931 INFO L225 Difference]: With dead ends: 4873 [2023-12-02 17:10:41,932 INFO L226 Difference]: Without dead ends: 4871 [2023-12-02 17:10:41,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 17:10:41,934 INFO L413 NwaCegarLoop]: 1355 mSDtfsCounter, 1505 mSDsluCounter, 2690 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 4045 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-02 17:10:41,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 4045 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-02 17:10:41,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4871 states. [2023-12-02 17:10:42,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4871 to 4871. [2023-12-02 17:10:42,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4871 states, 2833 states have (on average 1.2717966819625839) internal successors, (3603), 2977 states have internal predecessors, (3603), 1675 states have call successors, (1675), 399 states have call predecessors, (1675), 360 states have return successors, (1707), 1529 states have call predecessors, (1707), 1671 states have call successors, (1707) [2023-12-02 17:10:42,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4871 states to 4871 states and 6985 transitions. [2023-12-02 17:10:42,239 INFO L78 Accepts]: Start accepts. Automaton has 4871 states and 6985 transitions. Word has length 161 [2023-12-02 17:10:42,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:10:42,240 INFO L495 AbstractCegarLoop]: Abstraction has 4871 states and 6985 transitions. [2023-12-02 17:10:42,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-12-02 17:10:42,240 INFO L276 IsEmpty]: Start isEmpty. Operand 4871 states and 6985 transitions. [2023-12-02 17:10:42,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-02 17:10:42,244 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:10:42,244 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:10:42,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 17:10:42,244 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 17:10:42,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:10:42,245 INFO L85 PathProgramCache]: Analyzing trace with hash -177784377, now seen corresponding path program 1 times [2023-12-02 17:10:42,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:10:42,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859832181] [2023-12-02 17:10:42,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:10:42,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:10:42,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:10:42,593 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2023-12-02 17:10:42,593 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:10:42,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859832181] [2023-12-02 17:10:42,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859832181] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:10:42,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:10:42,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:10:42,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851896169] [2023-12-02 17:10:42,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:10:42,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:10:42,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:10:42,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:10:42,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:10:42,595 INFO L87 Difference]: Start difference. First operand 4871 states and 6985 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-12-02 17:10:44,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:10:46,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:10:46,906 INFO L93 Difference]: Finished difference Result 4877 states and 6990 transitions. [2023-12-02 17:10:46,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:10:46,907 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 166 [2023-12-02 17:10:46,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:10:46,921 INFO L225 Difference]: With dead ends: 4877 [2023-12-02 17:10:46,922 INFO L226 Difference]: Without dead ends: 4875 [2023-12-02 17:10:46,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 17:10:46,925 INFO L413 NwaCegarLoop]: 1355 mSDtfsCounter, 1505 mSDsluCounter, 2690 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 4045 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:10:46,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1511 Valid, 4045 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-02 17:10:46,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4875 states. [2023-12-02 17:10:47,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4875 to 4875. [2023-12-02 17:10:47,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4875 states, 2836 states have (on average 1.271509167842031) internal successors, (3606), 2980 states have internal predecessors, (3606), 1675 states have call successors, (1675), 400 states have call predecessors, (1675), 361 states have return successors, (1707), 1529 states have call predecessors, (1707), 1671 states have call successors, (1707) [2023-12-02 17:10:47,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4875 states to 4875 states and 6988 transitions. [2023-12-02 17:10:47,319 INFO L78 Accepts]: Start accepts. Automaton has 4875 states and 6988 transitions. Word has length 166 [2023-12-02 17:10:47,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:10:47,319 INFO L495 AbstractCegarLoop]: Abstraction has 4875 states and 6988 transitions. [2023-12-02 17:10:47,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-12-02 17:10:47,320 INFO L276 IsEmpty]: Start isEmpty. Operand 4875 states and 6988 transitions. [2023-12-02 17:10:47,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-02 17:10:47,323 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:10:47,324 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:10:47,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-02 17:10:47,324 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 17:10:47,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:10:47,324 INFO L85 PathProgramCache]: Analyzing trace with hash 6076830, now seen corresponding path program 1 times [2023-12-02 17:10:47,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:10:47,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140683181] [2023-12-02 17:10:47,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:10:47,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:10:47,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:10:47,826 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2023-12-02 17:10:47,826 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:10:47,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140683181] [2023-12-02 17:10:47,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140683181] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:10:47,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:10:47,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:10:47,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621555063] [2023-12-02 17:10:47,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:10:47,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:10:47,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:10:47,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:10:47,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:10:47,828 INFO L87 Difference]: Start difference. First operand 4875 states and 6988 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-02 17:10:50,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:10:50,598 INFO L93 Difference]: Finished difference Result 4881 states and 6993 transitions. [2023-12-02 17:10:50,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:10:50,599 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 170 [2023-12-02 17:10:50,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:10:50,622 INFO L225 Difference]: With dead ends: 4881 [2023-12-02 17:10:50,622 INFO L226 Difference]: Without dead ends: 4879 [2023-12-02 17:10:50,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 17:10:50,626 INFO L413 NwaCegarLoop]: 1355 mSDtfsCounter, 1505 mSDsluCounter, 2690 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 4045 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:10:50,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 4045 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-02 17:10:50,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4879 states. [2023-12-02 17:10:50,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4879 to 4879. [2023-12-02 17:10:50,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4879 states, 2839 states have (on average 1.2712222613596336) internal successors, (3609), 2983 states have internal predecessors, (3609), 1675 states have call successors, (1675), 401 states have call predecessors, (1675), 362 states have return successors, (1707), 1529 states have call predecessors, (1707), 1671 states have call successors, (1707) [2023-12-02 17:10:50,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4879 states to 4879 states and 6991 transitions. [2023-12-02 17:10:50,996 INFO L78 Accepts]: Start accepts. Automaton has 4879 states and 6991 transitions. Word has length 170 [2023-12-02 17:10:50,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:10:50,997 INFO L495 AbstractCegarLoop]: Abstraction has 4879 states and 6991 transitions. [2023-12-02 17:10:50,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-02 17:10:50,997 INFO L276 IsEmpty]: Start isEmpty. Operand 4879 states and 6991 transitions. [2023-12-02 17:10:51,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-02 17:10:51,001 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:10:51,001 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:10:51,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-02 17:10:51,002 INFO L420 AbstractCegarLoop]: === Iteration 12 === 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)] === [2023-12-02 17:10:51,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:10:51,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1554485530, now seen corresponding path program 1 times [2023-12-02 17:10:51,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:10:51,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229145128] [2023-12-02 17:10:51,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:10:51,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:10:51,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:10:51,285 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2023-12-02 17:10:51,285 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:10:51,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229145128] [2023-12-02 17:10:51,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229145128] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:10:51,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:10:51,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:10:51,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456159499] [2023-12-02 17:10:51,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:10:51,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:10:51,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:10:51,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:10:51,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:10:51,287 INFO L87 Difference]: Start difference. First operand 4879 states and 6991 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-12-02 17:10:53,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:10:54,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:10:54,158 INFO L93 Difference]: Finished difference Result 10699 states and 15338 transitions. [2023-12-02 17:10:54,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:10:54,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 169 [2023-12-02 17:10:54,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:10:54,176 INFO L225 Difference]: With dead ends: 10699 [2023-12-02 17:10:54,176 INFO L226 Difference]: Without dead ends: 5889 [2023-12-02 17:10:54,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:10:54,198 INFO L413 NwaCegarLoop]: 1711 mSDtfsCounter, 493 mSDsluCounter, 1344 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 3055 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-02 17:10:54,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 3055 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-02 17:10:54,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5889 states. [2023-12-02 17:10:54,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5889 to 5830. [2023-12-02 17:10:54,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5830 states, 3414 states have (on average 1.2721148213239601) internal successors, (4343), 3604 states have internal predecessors, (4343), 1967 states have call successors, (1967), 518 states have call predecessors, (1967), 446 states have return successors, (2011), 1742 states have call predecessors, (2011), 1963 states have call successors, (2011) [2023-12-02 17:10:54,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5830 states to 5830 states and 8321 transitions. [2023-12-02 17:10:54,674 INFO L78 Accepts]: Start accepts. Automaton has 5830 states and 8321 transitions. Word has length 169 [2023-12-02 17:10:54,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:10:54,674 INFO L495 AbstractCegarLoop]: Abstraction has 5830 states and 8321 transitions. [2023-12-02 17:10:54,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-12-02 17:10:54,675 INFO L276 IsEmpty]: Start isEmpty. Operand 5830 states and 8321 transitions. [2023-12-02 17:10:54,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-12-02 17:10:54,678 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:10:54,678 INFO L195 NwaCegarLoop]: trace histogram [11, 8, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:10:54,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-02 17:10:54,678 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 17:10:54,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:10:54,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1317078215, now seen corresponding path program 1 times [2023-12-02 17:10:54,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:10:54,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580908508] [2023-12-02 17:10:54,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:10:54,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:10:54,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:10:55,051 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2023-12-02 17:10:55,051 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:10:55,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580908508] [2023-12-02 17:10:55,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580908508] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:10:55,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:10:55,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:10:55,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140224940] [2023-12-02 17:10:55,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:10:55,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:10:55,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:10:55,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:10:55,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:10:55,054 INFO L87 Difference]: Start difference. First operand 5830 states and 8321 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-12-02 17:10:58,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:10:58,648 INFO L93 Difference]: Finished difference Result 5836 states and 8326 transitions. [2023-12-02 17:10:58,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:10:58,649 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 176 [2023-12-02 17:10:58,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:10:58,663 INFO L225 Difference]: With dead ends: 5836 [2023-12-02 17:10:58,663 INFO L226 Difference]: Without dead ends: 5834 [2023-12-02 17:10:58,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 17:10:58,666 INFO L413 NwaCegarLoop]: 1355 mSDtfsCounter, 1505 mSDsluCounter, 2690 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1509 SdHoareTripleChecker+Valid, 4045 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:10:58,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1509 Valid, 4045 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-02 17:10:58,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5834 states. [2023-12-02 17:10:59,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5834 to 5834. [2023-12-02 17:10:59,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5834 states, 3417 states have (on average 1.2718759145449225) internal successors, (4346), 3607 states have internal predecessors, (4346), 1967 states have call successors, (1967), 519 states have call predecessors, (1967), 447 states have return successors, (2011), 1742 states have call predecessors, (2011), 1963 states have call successors, (2011) [2023-12-02 17:10:59,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5834 states to 5834 states and 8324 transitions. [2023-12-02 17:10:59,286 INFO L78 Accepts]: Start accepts. Automaton has 5834 states and 8324 transitions. Word has length 176 [2023-12-02 17:10:59,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:10:59,287 INFO L495 AbstractCegarLoop]: Abstraction has 5834 states and 8324 transitions. [2023-12-02 17:10:59,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-12-02 17:10:59,287 INFO L276 IsEmpty]: Start isEmpty. Operand 5834 states and 8324 transitions. [2023-12-02 17:10:59,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-02 17:10:59,290 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:10:59,290 INFO L195 NwaCegarLoop]: trace histogram [11, 9, 8, 8, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:10:59,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-02 17:10:59,290 INFO L420 AbstractCegarLoop]: === Iteration 14 === 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)] === [2023-12-02 17:10:59,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:10:59,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1824787622, now seen corresponding path program 1 times [2023-12-02 17:10:59,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:10:59,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190873398] [2023-12-02 17:10:59,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:10:59,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:10:59,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:10:59,808 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2023-12-02 17:10:59,808 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:10:59,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190873398] [2023-12-02 17:10:59,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190873398] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:10:59,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:10:59,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:10:59,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526817788] [2023-12-02 17:10:59,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:10:59,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:10:59,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:10:59,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:10:59,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:10:59,811 INFO L87 Difference]: Start difference. First operand 5834 states and 8324 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-12-02 17:11:03,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:11:04,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:11:04,734 INFO L93 Difference]: Finished difference Result 6774 states and 9515 transitions. [2023-12-02 17:11:04,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:11:04,734 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 173 [2023-12-02 17:11:04,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:11:04,749 INFO L225 Difference]: With dead ends: 6774 [2023-12-02 17:11:04,749 INFO L226 Difference]: Without dead ends: 6772 [2023-12-02 17:11:04,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 17:11:04,752 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 1005 mSDsluCounter, 3685 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 5178 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-12-02 17:11:04,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1008 Valid, 5178 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-12-02 17:11:04,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6772 states. [2023-12-02 17:11:05,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6772 to 6730. [2023-12-02 17:11:05,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6730 states, 3870 states have (on average 1.2568475452196382) internal successors, (4864), 4075 states have internal predecessors, (4864), 2275 states have call successors, (2275), 690 states have call predecessors, (2275), 582 states have return successors, (2325), 2008 states have call predecessors, (2325), 2271 states have call successors, (2325) [2023-12-02 17:11:05,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6730 states to 6730 states and 9464 transitions. [2023-12-02 17:11:05,354 INFO L78 Accepts]: Start accepts. Automaton has 6730 states and 9464 transitions. Word has length 173 [2023-12-02 17:11:05,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:11:05,354 INFO L495 AbstractCegarLoop]: Abstraction has 6730 states and 9464 transitions. [2023-12-02 17:11:05,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-12-02 17:11:05,354 INFO L276 IsEmpty]: Start isEmpty. Operand 6730 states and 9464 transitions. [2023-12-02 17:11:05,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2023-12-02 17:11:05,356 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:11:05,356 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 9, 9, 7, 7, 7, 7, 7, 7, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:11:05,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-02 17:11:05,356 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 17:11:05,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:11:05,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1485488071, now seen corresponding path program 1 times [2023-12-02 17:11:05,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:11:05,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766728649] [2023-12-02 17:11:05,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:11:05,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:11:05,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:11:05,804 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2023-12-02 17:11:05,804 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:11:05,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766728649] [2023-12-02 17:11:05,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766728649] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:11:05,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:11:05,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:11:05,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510493766] [2023-12-02 17:11:05,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:11:05,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:11:05,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:11:05,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:11:05,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:11:05,807 INFO L87 Difference]: Start difference. First operand 6730 states and 9464 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-12-02 17:11:08,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:11:09,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:11:09,606 INFO L93 Difference]: Finished difference Result 6736 states and 9469 transitions. [2023-12-02 17:11:09,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:11:09,606 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 186 [2023-12-02 17:11:09,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:11:09,619 INFO L225 Difference]: With dead ends: 6736 [2023-12-02 17:11:09,619 INFO L226 Difference]: Without dead ends: 6734 [2023-12-02 17:11:09,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 17:11:09,622 INFO L413 NwaCegarLoop]: 1355 mSDtfsCounter, 1505 mSDsluCounter, 2690 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 4045 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:11:09,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 4045 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-02 17:11:09,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6734 states. [2023-12-02 17:11:10,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6734 to 6734. [2023-12-02 17:11:10,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6734 states, 3873 states have (on average 1.2566485928221018) internal successors, (4867), 4078 states have internal predecessors, (4867), 2275 states have call successors, (2275), 691 states have call predecessors, (2275), 583 states have return successors, (2325), 2008 states have call predecessors, (2325), 2271 states have call successors, (2325) [2023-12-02 17:11:10,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6734 states to 6734 states and 9467 transitions. [2023-12-02 17:11:10,133 INFO L78 Accepts]: Start accepts. Automaton has 6734 states and 9467 transitions. Word has length 186 [2023-12-02 17:11:10,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:11:10,134 INFO L495 AbstractCegarLoop]: Abstraction has 6734 states and 9467 transitions. [2023-12-02 17:11:10,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-12-02 17:11:10,134 INFO L276 IsEmpty]: Start isEmpty. Operand 6734 states and 9467 transitions. [2023-12-02 17:11:10,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-02 17:11:10,136 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:11:10,136 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 7, 7, 7, 7, 7, 7, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:11:10,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-02 17:11:10,137 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 17:11:10,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:11:10,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1065050594, now seen corresponding path program 1 times [2023-12-02 17:11:10,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:11:10,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102711314] [2023-12-02 17:11:10,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:11:10,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:11:10,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:11:10,595 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2023-12-02 17:11:10,595 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:11:10,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102711314] [2023-12-02 17:11:10,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102711314] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:11:10,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:11:10,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:11:10,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728482118] [2023-12-02 17:11:10,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:11:10,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:11:10,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:11:10,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:11:10,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:11:10,598 INFO L87 Difference]: Start difference. First operand 6734 states and 9467 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2023-12-02 17:11:13,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:11:14,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:11:14,787 INFO L93 Difference]: Finished difference Result 6740 states and 9472 transitions. [2023-12-02 17:11:14,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:11:14,787 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 190 [2023-12-02 17:11:14,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:11:14,800 INFO L225 Difference]: With dead ends: 6740 [2023-12-02 17:11:14,800 INFO L226 Difference]: Without dead ends: 6736 [2023-12-02 17:11:14,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 17:11:14,802 INFO L413 NwaCegarLoop]: 1355 mSDtfsCounter, 1505 mSDsluCounter, 2690 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 4045 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-02 17:11:14,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1506 Valid, 4045 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-02 17:11:14,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6736 states. [2023-12-02 17:11:15,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6736 to 6736. [2023-12-02 17:11:15,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6736 states, 3875 states have (on average 1.256258064516129) internal successors, (4868), 4079 states have internal predecessors, (4868), 2275 states have call successors, (2275), 692 states have call predecessors, (2275), 583 states have return successors, (2325), 2008 states have call predecessors, (2325), 2271 states have call successors, (2325) [2023-12-02 17:11:15,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6736 states to 6736 states and 9468 transitions. [2023-12-02 17:11:15,323 INFO L78 Accepts]: Start accepts. Automaton has 6736 states and 9468 transitions. Word has length 190 [2023-12-02 17:11:15,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:11:15,324 INFO L495 AbstractCegarLoop]: Abstraction has 6736 states and 9468 transitions. [2023-12-02 17:11:15,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2023-12-02 17:11:15,324 INFO L276 IsEmpty]: Start isEmpty. Operand 6736 states and 9468 transitions. [2023-12-02 17:11:15,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-12-02 17:11:15,326 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:11:15,326 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:11:15,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-02 17:11:15,326 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 17:11:15,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:11:15,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1980171366, now seen corresponding path program 1 times [2023-12-02 17:11:15,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:11:15,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787864375] [2023-12-02 17:11:15,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:11:15,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:11:15,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:11:15,674 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2023-12-02 17:11:15,674 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:11:15,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787864375] [2023-12-02 17:11:15,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787864375] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:11:15,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:11:15,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:11:15,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189394668] [2023-12-02 17:11:15,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:11:15,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:11:15,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:11:15,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:11:15,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:11:15,676 INFO L87 Difference]: Start difference. First operand 6736 states and 9468 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2023-12-02 17:11:18,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:11:19,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:11:20,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:11:20,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:11:20,925 INFO L93 Difference]: Finished difference Result 6736 states and 9468 transitions. [2023-12-02 17:11:20,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:11:20,925 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 188 [2023-12-02 17:11:20,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:11:20,938 INFO L225 Difference]: With dead ends: 6736 [2023-12-02 17:11:20,938 INFO L226 Difference]: Without dead ends: 6577 [2023-12-02 17:11:20,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 17:11:20,941 INFO L413 NwaCegarLoop]: 1353 mSDtfsCounter, 1502 mSDsluCounter, 2689 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 4042 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-02 17:11:20,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 4042 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-12-02 17:11:20,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6577 states. [2023-12-02 17:11:21,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6577 to 6577. [2023-12-02 17:11:21,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6577 states, 3821 states have (on average 1.2504579952891912) internal successors, (4778), 3989 states have internal predecessors, (4778), 2186 states have call successors, (2186), 665 states have call predecessors, (2186), 568 states have return successors, (2240), 1966 states have call predecessors, (2240), 2186 states have call successors, (2240) [2023-12-02 17:11:21,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6577 states to 6577 states and 9204 transitions. [2023-12-02 17:11:21,571 INFO L78 Accepts]: Start accepts. Automaton has 6577 states and 9204 transitions. Word has length 188 [2023-12-02 17:11:21,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:11:21,572 INFO L495 AbstractCegarLoop]: Abstraction has 6577 states and 9204 transitions. [2023-12-02 17:11:21,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2023-12-02 17:11:21,572 INFO L276 IsEmpty]: Start isEmpty. Operand 6577 states and 9204 transitions. [2023-12-02 17:11:21,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-12-02 17:11:21,575 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:11:21,575 INFO L195 NwaCegarLoop]: trace histogram [13, 8, 8, 7, 7, 7, 7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:11:21,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-02 17:11:21,575 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 17:11:21,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:11:21,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1963563873, now seen corresponding path program 1 times [2023-12-02 17:11:21,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:11:21,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884235867] [2023-12-02 17:11:21,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:11:21,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:11:21,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:11:22,539 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2023-12-02 17:11:22,539 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:11:22,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884235867] [2023-12-02 17:11:22,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884235867] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:11:22,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:11:22,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:11:22,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648111976] [2023-12-02 17:11:22,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:11:22,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:11:22,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:11:22,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:11:22,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:11:22,541 INFO L87 Difference]: Start difference. First operand 6577 states and 9204 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-12-02 17:11:26,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:11:26,747 INFO L93 Difference]: Finished difference Result 6590 states and 9215 transitions. [2023-12-02 17:11:26,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:11:26,748 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 212 [2023-12-02 17:11:26,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:11:26,761 INFO L225 Difference]: With dead ends: 6590 [2023-12-02 17:11:26,761 INFO L226 Difference]: Without dead ends: 6588 [2023-12-02 17:11:26,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 17:11:26,764 INFO L413 NwaCegarLoop]: 1443 mSDtfsCounter, 926 mSDsluCounter, 3604 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 927 SdHoareTripleChecker+Valid, 5047 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-02 17:11:26,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [927 Valid, 5047 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-02 17:11:26,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6588 states. [2023-12-02 17:11:27,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6588 to 6577. [2023-12-02 17:11:27,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6577 states, 3821 states have (on average 1.2475791677571317) internal successors, (4767), 3989 states have internal predecessors, (4767), 2186 states have call successors, (2186), 665 states have call predecessors, (2186), 568 states have return successors, (2240), 1966 states have call predecessors, (2240), 2186 states have call successors, (2240) [2023-12-02 17:11:27,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6577 states to 6577 states and 9193 transitions. [2023-12-02 17:11:27,329 INFO L78 Accepts]: Start accepts. Automaton has 6577 states and 9193 transitions. Word has length 212 [2023-12-02 17:11:27,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:11:27,329 INFO L495 AbstractCegarLoop]: Abstraction has 6577 states and 9193 transitions. [2023-12-02 17:11:27,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-12-02 17:11:27,330 INFO L276 IsEmpty]: Start isEmpty. Operand 6577 states and 9193 transitions. [2023-12-02 17:11:27,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2023-12-02 17:11:27,338 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:11:27,339 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 13, 7, 7, 7, 7, 7, 7, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:11:27,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-02 17:11:27,339 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_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)] === [2023-12-02 17:11:27,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:11:27,340 INFO L85 PathProgramCache]: Analyzing trace with hash -348689388, now seen corresponding path program 1 times [2023-12-02 17:11:27,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:11:27,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140383056] [2023-12-02 17:11:27,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:11:27,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:11:27,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:11:28,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2725 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2725 trivial. 0 not checked. [2023-12-02 17:11:28,060 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:11:28,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140383056] [2023-12-02 17:11:28,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140383056] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:11:28,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:11:28,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:11:28,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019370025] [2023-12-02 17:11:28,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:11:28,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:11:28,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:11:28,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:11:28,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:11:28,063 INFO L87 Difference]: Start difference. First operand 6577 states and 9193 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (61), 2 states have call predecessors, (61), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2023-12-02 17:11:30,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:11:31,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:11:31,263 INFO L93 Difference]: Finished difference Result 13157 states and 18479 transitions. [2023-12-02 17:11:31,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:11:31,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (61), 2 states have call predecessors, (61), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) Word has length 556 [2023-12-02 17:11:31,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:11:31,285 INFO L225 Difference]: With dead ends: 13157 [2023-12-02 17:11:31,285 INFO L226 Difference]: Without dead ends: 6649 [2023-12-02 17:11:31,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:11:31,311 INFO L413 NwaCegarLoop]: 1305 mSDtfsCounter, 6 mSDsluCounter, 1302 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2607 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-02 17:11:31,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2607 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-02 17:11:31,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6649 states. [2023-12-02 17:11:31,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6649 to 6585. [2023-12-02 17:11:31,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6585 states, 3829 states have (on average 1.2470618960564115) internal successors, (4775), 3997 states have internal predecessors, (4775), 2186 states have call successors, (2186), 665 states have call predecessors, (2186), 568 states have return successors, (2240), 1966 states have call predecessors, (2240), 2186 states have call successors, (2240) [2023-12-02 17:11:31,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6585 states to 6585 states and 9201 transitions. [2023-12-02 17:11:31,992 INFO L78 Accepts]: Start accepts. Automaton has 6585 states and 9201 transitions. Word has length 556 [2023-12-02 17:11:31,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:11:31,993 INFO L495 AbstractCegarLoop]: Abstraction has 6585 states and 9201 transitions. [2023-12-02 17:11:31,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (61), 2 states have call predecessors, (61), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2023-12-02 17:11:31,993 INFO L276 IsEmpty]: Start isEmpty. Operand 6585 states and 9201 transitions. [2023-12-02 17:11:32,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2023-12-02 17:11:32,003 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:11:32,003 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 13, 7, 7, 7, 7, 7, 7, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:11:32,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-02 17:11:32,003 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_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)] === [2023-12-02 17:11:32,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:11:32,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1209490644, now seen corresponding path program 1 times [2023-12-02 17:11:32,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:11:32,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805208872] [2023-12-02 17:11:32,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:11:32,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:11:32,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:11:32,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3225 trivial. 0 not checked. [2023-12-02 17:11:32,559 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:11:32,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805208872] [2023-12-02 17:11:32,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805208872] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:11:32,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286681] [2023-12-02 17:11:32,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:11:32,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:11:32,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_575c31c7-992c-47c9-9941-1b19010e9831/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:11:32,562 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_575c31c7-992c-47c9-9941-1b19010e9831/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:11:32,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_575c31c7-992c-47c9-9941-1b19010e9831/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 17:11:33,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:11:33,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 6294 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:11:33,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:11:34,093 INFO L134 CoverageAnalysis]: Checked inductivity of 3226 backedges. 588 proven. 1 refuted. 0 times theorem prover too weak. 2637 trivial. 0 not checked. [2023-12-02 17:11:34,093 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:11:34,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3225 trivial. 0 not checked. [2023-12-02 17:11:34,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286681] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:11:34,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [513994484] [2023-12-02 17:11:34,887 INFO L159 IcfgInterpreter]: Started Sifa with 207 locations of interest [2023-12-02 17:11:34,887 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:11:34,892 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:11:34,897 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:11:34,898 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:13:43,877 WARN L293 SmtUtils]: Spent 8.67s on a formula simplification that was a NOOP. DAG size: 4122 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 17:13:52,491 WARN L293 SmtUtils]: Spent 8.58s on a formula simplification that was a NOOP. DAG size: 4122 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 17:14:05,425 WARN L293 SmtUtils]: Spent 12.88s on a formula simplification. DAG size of input: 4123 DAG size of output: 4123 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 17:14:14,045 WARN L293 SmtUtils]: Spent 8.60s on a formula simplification that was a NOOP. DAG size: 4122 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 17:14:22,724 WARN L293 SmtUtils]: Spent 8.65s on a formula simplification that was a NOOP. DAG size: 4122 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 17:14:35,641 WARN L293 SmtUtils]: Spent 12.88s on a formula simplification. DAG size of input: 4123 DAG size of output: 4123 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 17:20:38,100 WARN L293 SmtUtils]: Spent 9.31s on a formula simplification that was a NOOP. DAG size: 4123 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 17:20:48,345 WARN L293 SmtUtils]: Spent 10.20s on a formula simplification that was a NOOP. DAG size: 4122 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 17:21:00,919 WARN L293 SmtUtils]: Spent 12.48s on a formula simplification. DAG size of input: 4123 DAG size of output: 4123 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 17:21:09,617 WARN L293 SmtUtils]: Spent 8.69s on a formula simplification that was a NOOP. DAG size: 4123 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 17:21:19,470 WARN L293 SmtUtils]: Spent 9.82s on a formula simplification that was a NOOP. DAG size: 4122 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 17:21:33,435 WARN L293 SmtUtils]: Spent 13.94s on a formula simplification. DAG size of input: 4123 DAG size of output: 4123 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm)