./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-wireless-cw1200-cw1200_wlan_spi.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2d30e0-1209-4da5-95e0-1feb8a2574be/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2d30e0-1209-4da5-95e0-1feb8a2574be/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2d30e0-1209-4da5-95e0-1feb8a2574be/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2d30e0-1209-4da5-95e0-1feb8a2574be/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2d30e0-1209-4da5-95e0-1feb8a2574be/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2d30e0-1209-4da5-95e0-1feb8a2574be/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0cef07d7f0384d28cd6187dbf399ce04548d86cf40895859810995ce7f7f2ba4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:13:14,517 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:13:14,616 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2d30e0-1209-4da5-95e0-1feb8a2574be/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:13:14,622 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:13:14,623 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:13:14,651 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:13:14,651 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:13:14,652 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:13:14,653 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:13:14,654 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:13:14,654 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:13:14,655 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:13:14,655 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:13:14,656 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:13:14,657 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:13:14,657 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:13:14,657 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:13:14,658 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:13:14,658 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:13:14,659 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:13:14,659 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:13:14,661 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:13:14,662 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:13:14,662 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:13:14,663 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:13:14,663 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:13:14,663 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:13:14,664 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:13:14,664 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:13:14,665 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:13:14,666 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:13:14,666 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:13:14,667 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:13:14,667 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:13:14,667 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:13:14,667 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:13:14,668 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:13:14,668 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:13:14,668 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:13:14,668 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:13:14,669 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:13:14,670 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:13:14,670 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:13:14,670 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:13:14,671 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_6b2d30e0-1209-4da5-95e0-1feb8a2574be/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2d30e0-1209-4da5-95e0-1feb8a2574be/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0cef07d7f0384d28cd6187dbf399ce04548d86cf40895859810995ce7f7f2ba4 [2023-11-23 21:13:14,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:13:14,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:13:14,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:13:15,000 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:13:15,001 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:13:15,003 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2d30e0-1209-4da5-95e0-1feb8a2574be/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i [2023-11-23 21:13:18,159 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:13:18,840 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:13:18,841 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2d30e0-1209-4da5-95e0-1feb8a2574be/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i [2023-11-23 21:13:18,894 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2d30e0-1209-4da5-95e0-1feb8a2574be/bin/utaipan-verify-mE87zJ7Ire/data/794aa5678/2e40ace2f6b2426e9ee948505761981b/FLAG989dca2e7 [2023-11-23 21:13:18,914 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2d30e0-1209-4da5-95e0-1feb8a2574be/bin/utaipan-verify-mE87zJ7Ire/data/794aa5678/2e40ace2f6b2426e9ee948505761981b [2023-11-23 21:13:18,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:13:18,924 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:13:18,925 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:13:18,926 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:13:18,930 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:13:18,931 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:13:18" (1/1) ... [2023-11-23 21:13:18,932 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20e6a054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:18, skipping insertion in model container [2023-11-23 21:13:18,932 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:13:18" (1/1) ... [2023-11-23 21:13:19,086 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:13:21,444 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_6b2d30e0-1209-4da5-95e0-1feb8a2574be/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i[292189,292202] [2023-11-23 21:13:21,449 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_6b2d30e0-1209-4da5-95e0-1feb8a2574be/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i[292358,292371] [2023-11-23 21:13:21,460 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2d30e0-1209-4da5-95e0-1feb8a2574be/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i[292525,292538] [2023-11-23 21:13:21,461 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2d30e0-1209-4da5-95e0-1feb8a2574be/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i[292693,292706] [2023-11-23 21:13:21,470 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:13:21,503 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:13:21,671 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [6219] [2023-11-23 21:13:21,673 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6222] [2023-11-23 21:13:21,673 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6225] [2023-11-23 21:13:21,674 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6228] [2023-11-23 21:13:21,706 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgb %b0, %1\n": "+q" (__ret), "+m" (tmp___0->state): : "memory", "cc"); [6657-6658] [2023-11-23 21:13:21,707 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgw %w0, %1\n": "+r" (__ret), "+m" (tmp___1->state): : "memory", "cc"); [6664-6665] [2023-11-23 21:13:21,707 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgl %0, %1\n": "+r" (__ret), "+m" (tmp___2->state): : "memory", "cc"); [6671-6672] [2023-11-23 21:13:21,707 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgq %q0, %1\n": "+r" (__ret), "+m" (tmp___3->state): : "memory", "cc"); [6678-6679] [2023-11-23 21:13:21,708 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgb %b0, %1\n": "+q" (__ret___0), "+m" (tmp___4->state): : "memory", "cc"); [6722-6723] [2023-11-23 21:13:21,709 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgw %w0, %1\n": "+r" (__ret___0), "+m" (tmp___5->state): : "memory", "cc"); [6729-6730] [2023-11-23 21:13:21,709 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgl %0, %1\n": "+r" (__ret___0), "+m" (tmp___6->state): : "memory", "cc"); [6736-6737] [2023-11-23 21:13:21,710 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgq %q0, %1\n": "+r" (__ret___0), "+m" (tmp___7->state): : "memory", "cc"); [6743-6744] [2023-11-23 21:13:21,900 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_6b2d30e0-1209-4da5-95e0-1feb8a2574be/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i[292189,292202] [2023-11-23 21:13:21,900 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_6b2d30e0-1209-4da5-95e0-1feb8a2574be/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i[292358,292371] [2023-11-23 21:13:21,901 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_6b2d30e0-1209-4da5-95e0-1feb8a2574be/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i[292525,292538] [2023-11-23 21:13:21,902 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_6b2d30e0-1209-4da5-95e0-1feb8a2574be/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i[292693,292706] [2023-11-23 21:13:21,905 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:13:22,038 WARN L675 CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:13:22,038 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:13:22,046 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:13:22,047 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:22 WrapperNode [2023-11-23 21:13:22,047 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:13:22,051 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:13:22,051 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:13:22,051 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:13:22,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:22" (1/1) ... [2023-11-23 21:13:22,183 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:22" (1/1) ... [2023-11-23 21:13:22,360 INFO L138 Inliner]: procedures = 325, calls = 936, calls flagged for inlining = 152, calls inlined = 139, statements flattened = 2746 [2023-11-23 21:13:22,361 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:13:22,362 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:13:22,362 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:13:22,362 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:13:22,374 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:22" (1/1) ... [2023-11-23 21:13:22,375 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:22" (1/1) ... [2023-11-23 21:13:22,416 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:22" (1/1) ... [2023-11-23 21:13:22,417 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:22" (1/1) ... [2023-11-23 21:13:22,508 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:22" (1/1) ... [2023-11-23 21:13:22,537 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:22" (1/1) ... [2023-11-23 21:13:22,572 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:22" (1/1) ... [2023-11-23 21:13:22,595 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:22" (1/1) ... [2023-11-23 21:13:22,617 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:13:22,618 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:13:22,618 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:13:22,619 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:13:22,619 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:22" (1/1) ... [2023-11-23 21:13:22,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:13:22,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2d30e0-1209-4da5-95e0-1feb8a2574be/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:13:22,650 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2d30e0-1209-4da5-95e0-1feb8a2574be/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:13:22,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2d30e0-1209-4da5-95e0-1feb8a2574be/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:13:22,702 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2023-11-23 21:13:22,702 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2023-11-23 21:13:22,702 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2023-11-23 21:13:22,702 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 21:13:22,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 21:13:22,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-23 21:13:22,703 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-23 21:13:22,703 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-11-23 21:13:22,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-11-23 21:13:22,703 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-11-23 21:13:22,704 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-11-23 21:13:22,704 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_request [2023-11-23 21:13:22,704 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_request [2023-11-23 21:13:22,704 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2023-11-23 21:13:22,704 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2023-11-23 21:13:22,705 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 21:13:22,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 21:13:22,705 INFO L130 BoogieDeclarations]: Found specification of procedure cw1200_spi_irq_unsubscribe [2023-11-23 21:13:22,705 INFO L138 BoogieDeclarations]: Found implementation of procedure cw1200_spi_irq_unsubscribe [2023-11-23 21:13:22,705 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2023-11-23 21:13:22,705 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2023-11-23 21:13:22,706 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~bool~0~TO~int [2023-11-23 21:13:22,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~bool~0~TO~int [2023-11-23 21:13:22,706 INFO L130 BoogieDeclarations]: Found specification of procedure cw1200_spi_unlock [2023-11-23 21:13:22,706 INFO L138 BoogieDeclarations]: Found implementation of procedure cw1200_spi_unlock [2023-11-23 21:13:22,706 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-11-23 21:13:22,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-11-23 21:13:22,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_66 [2023-11-23 21:13:22,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_66 [2023-11-23 21:13:22,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:13:22,707 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_platdata [2023-11-23 21:13:22,707 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_platdata [2023-11-23 21:13:22,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:13:22,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-11-23 21:13:22,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-11-23 21:13:22,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-23 21:13:22,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-23 21:13:22,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_hwbus_priv [2023-11-23 21:13:22,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_hwbus_priv [2023-11-23 21:13:22,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:13:22,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:13:22,709 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 21:13:22,709 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 21:13:22,709 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2023-11-23 21:13:22,709 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2023-11-23 21:13:22,709 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2023-11-23 21:13:22,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2023-11-23 21:13:22,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-11-23 21:13:22,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-11-23 21:13:22,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2023-11-23 21:13:22,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2023-11-23 21:13:22,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-23 21:13:22,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-23 21:13:22,711 INFO L130 BoogieDeclarations]: Found specification of procedure cw1200_spi_probe [2023-11-23 21:13:22,711 INFO L138 BoogieDeclarations]: Found implementation of procedure cw1200_spi_probe [2023-11-23 21:13:22,711 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-23 21:13:22,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-11-23 21:13:22,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:13:22,711 INFO L130 BoogieDeclarations]: Found specification of procedure irq_set_irq_wake [2023-11-23 21:13:22,712 INFO L138 BoogieDeclarations]: Found implementation of procedure irq_set_irq_wake [2023-11-23 21:13:22,712 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2023-11-23 21:13:22,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2023-11-23 21:13:22,712 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-23 21:13:22,712 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-23 21:13:22,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:13:22,713 INFO L130 BoogieDeclarations]: Found specification of procedure cw1200_spi_disconnect [2023-11-23 21:13:22,713 INFO L138 BoogieDeclarations]: Found implementation of procedure cw1200_spi_disconnect [2023-11-23 21:13:22,713 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_pr_debug [2023-11-23 21:13:22,713 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_pr_debug [2023-11-23 21:13:22,713 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 21:13:22,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 21:13:22,714 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_set_value [2023-11-23 21:13:22,714 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_set_value [2023-11-23 21:13:22,714 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_direction_output [2023-11-23 21:13:22,714 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_direction_output [2023-11-23 21:13:22,714 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-11-23 21:13:22,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-11-23 21:13:22,714 INFO L130 BoogieDeclarations]: Found specification of procedure cw1200_spi_off [2023-11-23 21:13:22,715 INFO L138 BoogieDeclarations]: Found implementation of procedure cw1200_spi_off [2023-11-23 21:13:22,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:13:22,715 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2023-11-23 21:13:22,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2023-11-23 21:13:22,715 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2023-11-23 21:13:22,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2023-11-23 21:13:22,715 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2023-11-23 21:13:22,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2023-11-23 21:13:22,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:13:22,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-23 21:13:22,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-23 21:13:22,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:13:22,716 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-23 21:13:22,717 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2023-11-23 21:13:22,717 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2023-11-23 21:13:22,717 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 21:13:22,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 21:13:22,717 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-11-23 21:13:22,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-11-23 21:13:22,717 INFO L130 BoogieDeclarations]: Found specification of procedure spi_get_drvdata [2023-11-23 21:13:22,718 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_get_drvdata [2023-11-23 21:13:22,718 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-11-23 21:13:22,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-11-23 21:13:22,718 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2023-11-23 21:13:22,718 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2023-11-23 21:13:22,718 INFO L130 BoogieDeclarations]: Found specification of procedure cw1200_spi_lock [2023-11-23 21:13:22,719 INFO L138 BoogieDeclarations]: Found implementation of procedure cw1200_spi_lock [2023-11-23 21:13:22,719 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-23 21:13:22,719 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-23 21:13:22,719 INFO L130 BoogieDeclarations]: Found specification of procedure cw1200_spi_resume [2023-11-23 21:13:22,719 INFO L138 BoogieDeclarations]: Found implementation of procedure cw1200_spi_resume [2023-11-23 21:13:22,719 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_spi_driver_exit_9_2 [2023-11-23 21:13:22,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_spi_driver_exit_9_2 [2023-11-23 21:13:22,720 INFO L130 BoogieDeclarations]: Found specification of procedure cw1200_spi_pm [2023-11-23 21:13:22,720 INFO L138 BoogieDeclarations]: Found implementation of procedure cw1200_spi_pm [2023-11-23 21:13:22,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:13:22,720 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-11-23 21:13:22,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-11-23 21:13:22,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:13:22,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:13:23,316 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:13:23,320 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:13:23,414 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 21:13:28,133 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2023-11-23 21:13:28,541 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:13:29,283 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:13:29,284 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-23 21:13:29,286 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:13:29 BoogieIcfgContainer [2023-11-23 21:13:29,287 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:13:29,292 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:13:29,294 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:13:29,299 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:13:29,299 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:13:18" (1/3) ... [2023-11-23 21:13:29,301 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@489b14aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:13:29, skipping insertion in model container [2023-11-23 21:13:29,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:22" (2/3) ... [2023-11-23 21:13:29,302 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@489b14aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:13:29, skipping insertion in model container [2023-11-23 21:13:29,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:13:29" (3/3) ... [2023-11-23 21:13:29,305 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i [2023-11-23 21:13:29,327 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:13:29,328 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-23 21:13:29,404 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:13:29,412 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;@6fd07057, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:13:29,412 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-23 21:13:29,422 INFO L276 IsEmpty]: Start isEmpty. Operand has 801 states, 495 states have (on average 1.3555555555555556) internal successors, (671), 505 states have internal predecessors, (671), 254 states have call successors, (254), 52 states have call predecessors, (254), 51 states have return successors, (245), 244 states have call predecessors, (245), 245 states have call successors, (245) [2023-11-23 21:13:29,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-23 21:13:29,448 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:13:29,449 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 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] [2023-11-23 21:13:29,449 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 21:13:29,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:13:29,455 INFO L85 PathProgramCache]: Analyzing trace with hash 407630565, now seen corresponding path program 1 times [2023-11-23 21:13:29,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:13:29,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330795633] [2023-11-23 21:13:29,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:29,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:13:29,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:13:30,287 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2023-11-23 21:13:30,288 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:13:30,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330795633] [2023-11-23 21:13:30,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330795633] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:13:30,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:13:30,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:13:30,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958860582] [2023-11-23 21:13:30,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:13:30,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:13:30,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:13:30,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:13:30,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:13:30,337 INFO L87 Difference]: Start difference. First operand has 801 states, 495 states have (on average 1.3555555555555556) internal successors, (671), 505 states have internal predecessors, (671), 254 states have call successors, (254), 52 states have call predecessors, (254), 51 states have return successors, (245), 244 states have call predecessors, (245), 245 states have call successors, (245) Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-23 21:13:33,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:13:35,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:13:37,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:13:39,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:13:41,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:13:43,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:13:43,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:13:43,924 INFO L93 Difference]: Finished difference Result 2246 states and 3331 transitions. [2023-11-23 21:13:43,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:13:43,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 134 [2023-11-23 21:13:43,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:13:43,958 INFO L225 Difference]: With dead ends: 2246 [2023-11-23 21:13:43,958 INFO L226 Difference]: Without dead ends: 1455 [2023-11-23 21:13:43,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:13:43,978 INFO L413 NwaCegarLoop]: 953 mSDtfsCounter, 1015 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 9 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 1860 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:13:43,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1015 Valid, 1860 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 398 Invalid, 6 Unknown, 0 Unchecked, 13.3s Time] [2023-11-23 21:13:44,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2023-11-23 21:13:44,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1451. [2023-11-23 21:13:44,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1451 states, 917 states have (on average 1.3369683751363142) internal successors, (1226), 940 states have internal predecessors, (1226), 433 states have call successors, (433), 99 states have call predecessors, (433), 98 states have return successors, (429), 427 states have call predecessors, (429), 429 states have call successors, (429) [2023-11-23 21:13:44,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1451 states to 1451 states and 2088 transitions. [2023-11-23 21:13:44,197 INFO L78 Accepts]: Start accepts. Automaton has 1451 states and 2088 transitions. Word has length 134 [2023-11-23 21:13:44,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:13:44,198 INFO L495 AbstractCegarLoop]: Abstraction has 1451 states and 2088 transitions. [2023-11-23 21:13:44,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-23 21:13:44,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 2088 transitions. [2023-11-23 21:13:44,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-23 21:13:44,205 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:13:44,206 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:13:44,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:13:44,211 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 21:13:44,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:13:44,212 INFO L85 PathProgramCache]: Analyzing trace with hash 13459224, now seen corresponding path program 1 times [2023-11-23 21:13:44,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:13:44,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311077909] [2023-11-23 21:13:44,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:44,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:13:44,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:13:44,641 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2023-11-23 21:13:44,642 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:13:44,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311077909] [2023-11-23 21:13:44,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311077909] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:13:44,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:13:44,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:13:44,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418351813] [2023-11-23 21:13:44,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:13:44,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:13:44,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:13:44,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:13:44,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:13:44,646 INFO L87 Difference]: Start difference. First operand 1451 states and 2088 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 21:13:47,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:13:49,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:13:51,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:13:53,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:13:55,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:13:57,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:13:58,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:13:58,175 INFO L93 Difference]: Finished difference Result 4063 states and 5832 transitions. [2023-11-23 21:13:58,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:13:58,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 133 [2023-11-23 21:13:58,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:13:58,203 INFO L225 Difference]: With dead ends: 4063 [2023-11-23 21:13:58,204 INFO L226 Difference]: Without dead ends: 2635 [2023-11-23 21:13:58,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:13:58,214 INFO L413 NwaCegarLoop]: 1101 mSDtfsCounter, 856 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 29 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 1965 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:13:58,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 1965 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 481 Invalid, 6 Unknown, 0 Unchecked, 13.3s Time] [2023-11-23 21:13:58,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2635 states. [2023-11-23 21:13:58,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2635 to 2606. [2023-11-23 21:13:58,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2606 states, 1640 states have (on average 1.3079268292682926) internal successors, (2145), 1686 states have internal predecessors, (2145), 772 states have call successors, (772), 192 states have call predecessors, (772), 191 states have return successors, (768), 759 states have call predecessors, (768), 768 states have call successors, (768) [2023-11-23 21:13:58,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2606 states to 2606 states and 3685 transitions. [2023-11-23 21:13:58,464 INFO L78 Accepts]: Start accepts. Automaton has 2606 states and 3685 transitions. Word has length 133 [2023-11-23 21:13:58,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:13:58,465 INFO L495 AbstractCegarLoop]: Abstraction has 2606 states and 3685 transitions. [2023-11-23 21:13:58,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 21:13:58,465 INFO L276 IsEmpty]: Start isEmpty. Operand 2606 states and 3685 transitions. [2023-11-23 21:13:58,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-23 21:13:58,469 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:13:58,469 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:13:58,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:13:58,470 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 21:13:58,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:13:58,470 INFO L85 PathProgramCache]: Analyzing trace with hash 804949674, now seen corresponding path program 1 times [2023-11-23 21:13:58,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:13:58,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253439692] [2023-11-23 21:13:58,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:58,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:13:58,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:13:58,708 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2023-11-23 21:13:58,708 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:13:58,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253439692] [2023-11-23 21:13:58,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253439692] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:13:58,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:13:58,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:13:58,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826557602] [2023-11-23 21:13:58,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:13:58,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:13:58,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:13:58,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:13:58,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:13:58,713 INFO L87 Difference]: Start difference. First operand 2606 states and 3685 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-23 21:14:01,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:14:03,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:14:05,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:14:07,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:14:10,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:14:12,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:14:12,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:14:12,225 INFO L93 Difference]: Finished difference Result 7676 states and 10991 transitions. [2023-11-23 21:14:12,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:14:12,226 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 137 [2023-11-23 21:14:12,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:14:12,282 INFO L225 Difference]: With dead ends: 7676 [2023-11-23 21:14:12,282 INFO L226 Difference]: Without dead ends: 5093 [2023-11-23 21:14:12,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:14:12,298 INFO L413 NwaCegarLoop]: 947 mSDtfsCounter, 1077 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 6 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 1846 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:14:12,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1077 Valid, 1846 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 387 Invalid, 6 Unknown, 0 Unchecked, 13.2s Time] [2023-11-23 21:14:12,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5093 states. [2023-11-23 21:14:12,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5093 to 5060. [2023-11-23 21:14:12,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5060 states, 3202 states have (on average 1.3101186758276078) internal successors, (4195), 3300 states have internal predecessors, (4195), 1486 states have call successors, (1486), 378 states have call predecessors, (1486), 369 states have return successors, (1606), 1437 states have call predecessors, (1606), 1482 states have call successors, (1606) [2023-11-23 21:14:12,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5060 states to 5060 states and 7287 transitions. [2023-11-23 21:14:12,731 INFO L78 Accepts]: Start accepts. Automaton has 5060 states and 7287 transitions. Word has length 137 [2023-11-23 21:14:12,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:14:12,732 INFO L495 AbstractCegarLoop]: Abstraction has 5060 states and 7287 transitions. [2023-11-23 21:14:12,732 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-23 21:14:12,732 INFO L276 IsEmpty]: Start isEmpty. Operand 5060 states and 7287 transitions. [2023-11-23 21:14:12,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-23 21:14:12,737 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:14:12,738 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:14:12,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:14:12,738 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 21:14:12,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:14:12,740 INFO L85 PathProgramCache]: Analyzing trace with hash 807345938, now seen corresponding path program 1 times [2023-11-23 21:14:12,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:14:12,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473528309] [2023-11-23 21:14:12,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:12,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:14:12,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:14:12,902 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2023-11-23 21:14:12,903 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:14:12,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473528309] [2023-11-23 21:14:12,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473528309] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:14:12,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:14:12,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:14:12,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778065507] [2023-11-23 21:14:12,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:14:12,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:14:12,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:14:12,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:14:12,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:14:12,907 INFO L87 Difference]: Start difference. First operand 5060 states and 7287 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 21:14:16,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []