./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 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef6e1d7-eefb-4012-835b-14960dd6feef/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef6e1d7-eefb-4012-835b-14960dd6feef/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef6e1d7-eefb-4012-835b-14960dd6feef/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef6e1d7-eefb-4012-835b-14960dd6feef/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef6e1d7-eefb-4012-835b-14960dd6feef/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef6e1d7-eefb-4012-835b-14960dd6feef/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0cef07d7f0384d28cd6187dbf399ce04548d86cf40895859810995ce7f7f2ba4 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:56:01,178 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:56:01,252 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef6e1d7-eefb-4012-835b-14960dd6feef/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-24 23:56:01,259 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:56:01,259 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:56:01,286 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:56:01,287 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:56:01,288 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:56:01,289 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:56:01,290 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:56:01,290 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:56:01,291 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:56:01,291 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:56:01,292 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:56:01,293 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:56:01,293 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:56:01,294 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:56:01,294 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:56:01,295 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:56:01,295 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:56:01,296 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:56:01,296 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:56:01,297 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:56:01,298 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:56:01,298 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:56:01,299 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:56:01,299 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:56:01,300 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:56:01,300 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:56:01,300 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:56:01,301 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:56:01,301 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:56:01,302 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:56:01,302 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:56:01,302 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:56:01,303 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:56:01,303 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:56:01,303 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:56:01,304 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:56:01,304 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:56:01,304 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:56:01,305 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:56:01,305 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:56:01,305 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:56:01,305 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_aef6e1d7-eefb-4012-835b-14960dd6feef/bin/utaipan-verify-SwPr7d2a91/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef6e1d7-eefb-4012-835b-14960dd6feef/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0cef07d7f0384d28cd6187dbf399ce04548d86cf40895859810995ce7f7f2ba4 [2023-11-24 23:56:01,568 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:56:01,590 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:56:01,593 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:56:01,594 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:56:01,595 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:56:01,596 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef6e1d7-eefb-4012-835b-14960dd6feef/bin/utaipan-verify-SwPr7d2a91/../../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 [2023-11-24 23:56:04,599 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:56:05,320 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:56:05,321 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef6e1d7-eefb-4012-835b-14960dd6feef/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 [2023-11-24 23:56:05,376 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef6e1d7-eefb-4012-835b-14960dd6feef/bin/utaipan-verify-SwPr7d2a91/data/9c7a5c5d0/157bd96e179b40dc97ab105c7c433407/FLAG8da2838dd [2023-11-24 23:56:05,392 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef6e1d7-eefb-4012-835b-14960dd6feef/bin/utaipan-verify-SwPr7d2a91/data/9c7a5c5d0/157bd96e179b40dc97ab105c7c433407 [2023-11-24 23:56:05,399 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:56:05,401 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:56:05,402 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:56:05,402 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:56:05,408 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:56:05,410 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:56:05" (1/1) ... [2023-11-24 23:56:05,412 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6685285f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:05, skipping insertion in model container [2023-11-24 23:56:05,412 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:56:05" (1/1) ... [2023-11-24 23:56:05,597 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:56:07,993 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_aef6e1d7-eefb-4012-835b-14960dd6feef/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] [2023-11-24 23:56:07,997 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_aef6e1d7-eefb-4012-835b-14960dd6feef/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] [2023-11-24 23:56:07,998 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_aef6e1d7-eefb-4012-835b-14960dd6feef/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] [2023-11-24 23:56:07,998 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_aef6e1d7-eefb-4012-835b-14960dd6feef/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] [2023-11-24 23:56:08,004 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:56:08,021 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:56:08,146 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [6219] [2023-11-24 23:56:08,148 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6222] [2023-11-24 23:56:08,149 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6225] [2023-11-24 23:56:08,149 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6228] [2023-11-24 23:56:08,167 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] [2023-11-24 23:56:08,167 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] [2023-11-24 23:56:08,168 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] [2023-11-24 23:56:08,168 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] [2023-11-24 23:56:08,169 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] [2023-11-24 23:56:08,170 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] [2023-11-24 23:56:08,170 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] [2023-11-24 23:56:08,171 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] [2023-11-24 23:56:08,408 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_aef6e1d7-eefb-4012-835b-14960dd6feef/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] [2023-11-24 23:56:08,409 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_aef6e1d7-eefb-4012-835b-14960dd6feef/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] [2023-11-24 23:56:08,410 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_aef6e1d7-eefb-4012-835b-14960dd6feef/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] [2023-11-24 23:56:08,410 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_aef6e1d7-eefb-4012-835b-14960dd6feef/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] [2023-11-24 23:56:08,417 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:56:08,568 WARN L675 CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:56:08,568 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:56:08,577 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:56:08,578 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:08 WrapperNode [2023-11-24 23:56:08,578 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:56:08,579 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:56:08,579 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:56:08,580 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:56:08,588 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:08" (1/1) ... [2023-11-24 23:56:08,688 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:08" (1/1) ... [2023-11-24 23:56:08,858 INFO L138 Inliner]: procedures = 325, calls = 936, calls flagged for inlining = 152, calls inlined = 139, statements flattened = 2778 [2023-11-24 23:56:08,858 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:56:08,859 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:56:08,860 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:56:08,860 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:56:08,870 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:08" (1/1) ... [2023-11-24 23:56:08,871 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:08" (1/1) ... [2023-11-24 23:56:08,897 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:08" (1/1) ... [2023-11-24 23:56:08,898 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:08" (1/1) ... [2023-11-24 23:56:08,974 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:08" (1/1) ... [2023-11-24 23:56:08,989 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:08" (1/1) ... [2023-11-24 23:56:09,006 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:08" (1/1) ... [2023-11-24 23:56:09,021 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:08" (1/1) ... [2023-11-24 23:56:09,085 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:56:09,086 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:56:09,086 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:56:09,086 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:56:09,087 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:08" (1/1) ... [2023-11-24 23:56:09,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:56:09,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef6e1d7-eefb-4012-835b-14960dd6feef/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:56:09,130 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef6e1d7-eefb-4012-835b-14960dd6feef/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:56:09,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aef6e1d7-eefb-4012-835b-14960dd6feef/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:56:09,165 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2023-11-24 23:56:09,165 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2023-11-24 23:56:09,165 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2023-11-24 23:56:09,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-24 23:56:09,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-24 23:56:09,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-24 23:56:09,166 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-24 23:56:09,166 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-11-24 23:56:09,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-11-24 23:56:09,166 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-11-24 23:56:09,168 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-11-24 23:56:09,168 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_request [2023-11-24 23:56:09,169 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_request [2023-11-24 23:56:09,169 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2023-11-24 23:56:09,169 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2023-11-24 23:56:09,169 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-24 23:56:09,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-24 23:56:09,170 INFO L130 BoogieDeclarations]: Found specification of procedure cw1200_spi_irq_unsubscribe [2023-11-24 23:56:09,170 INFO L138 BoogieDeclarations]: Found implementation of procedure cw1200_spi_irq_unsubscribe [2023-11-24 23:56:09,170 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2023-11-24 23:56:09,170 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2023-11-24 23:56:09,170 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~bool~0~TO~int [2023-11-24 23:56:09,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~bool~0~TO~int [2023-11-24 23:56:09,171 INFO L130 BoogieDeclarations]: Found specification of procedure cw1200_spi_unlock [2023-11-24 23:56:09,171 INFO L138 BoogieDeclarations]: Found implementation of procedure cw1200_spi_unlock [2023-11-24 23:56:09,171 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-11-24 23:56:09,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-11-24 23:56:09,171 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_66 [2023-11-24 23:56:09,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_66 [2023-11-24 23:56:09,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:56:09,172 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_platdata [2023-11-24 23:56:09,172 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_platdata [2023-11-24 23:56:09,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:56:09,172 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-11-24 23:56:09,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-11-24 23:56:09,173 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-24 23:56:09,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-24 23:56:09,173 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_hwbus_priv [2023-11-24 23:56:09,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_hwbus_priv [2023-11-24 23:56:09,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:56:09,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-24 23:56:09,174 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-24 23:56:09,174 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-24 23:56:09,174 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2023-11-24 23:56:09,175 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2023-11-24 23:56:09,175 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2023-11-24 23:56:09,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2023-11-24 23:56:09,175 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-11-24 23:56:09,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-11-24 23:56:09,175 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2023-11-24 23:56:09,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2023-11-24 23:56:09,176 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-24 23:56:09,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-24 23:56:09,176 INFO L130 BoogieDeclarations]: Found specification of procedure cw1200_spi_probe [2023-11-24 23:56:09,176 INFO L138 BoogieDeclarations]: Found implementation of procedure cw1200_spi_probe [2023-11-24 23:56:09,176 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-24 23:56:09,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-11-24 23:56:09,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:56:09,177 INFO L130 BoogieDeclarations]: Found specification of procedure irq_set_irq_wake [2023-11-24 23:56:09,177 INFO L138 BoogieDeclarations]: Found implementation of procedure irq_set_irq_wake [2023-11-24 23:56:09,177 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2023-11-24 23:56:09,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2023-11-24 23:56:09,178 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-24 23:56:09,178 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-24 23:56:09,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:56:09,178 INFO L130 BoogieDeclarations]: Found specification of procedure cw1200_spi_disconnect [2023-11-24 23:56:09,178 INFO L138 BoogieDeclarations]: Found implementation of procedure cw1200_spi_disconnect [2023-11-24 23:56:09,179 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_pr_debug [2023-11-24 23:56:09,179 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_pr_debug [2023-11-24 23:56:09,179 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-24 23:56:09,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-24 23:56:09,179 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_set_value [2023-11-24 23:56:09,180 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_set_value [2023-11-24 23:56:09,180 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_direction_output [2023-11-24 23:56:09,180 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_direction_output [2023-11-24 23:56:09,180 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-11-24 23:56:09,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-11-24 23:56:09,180 INFO L130 BoogieDeclarations]: Found specification of procedure cw1200_spi_off [2023-11-24 23:56:09,181 INFO L138 BoogieDeclarations]: Found implementation of procedure cw1200_spi_off [2023-11-24 23:56:09,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:56:09,181 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2023-11-24 23:56:09,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2023-11-24 23:56:09,181 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2023-11-24 23:56:09,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2023-11-24 23:56:09,182 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2023-11-24 23:56:09,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2023-11-24 23:56:09,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:56:09,182 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-24 23:56:09,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-24 23:56:09,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:56:09,183 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-24 23:56:09,183 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2023-11-24 23:56:09,183 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2023-11-24 23:56:09,183 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-24 23:56:09,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-24 23:56:09,184 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-11-24 23:56:09,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-11-24 23:56:09,184 INFO L130 BoogieDeclarations]: Found specification of procedure spi_get_drvdata [2023-11-24 23:56:09,184 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_get_drvdata [2023-11-24 23:56:09,184 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-11-24 23:56:09,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-11-24 23:56:09,185 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2023-11-24 23:56:09,185 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2023-11-24 23:56:09,185 INFO L130 BoogieDeclarations]: Found specification of procedure cw1200_spi_lock [2023-11-24 23:56:09,185 INFO L138 BoogieDeclarations]: Found implementation of procedure cw1200_spi_lock [2023-11-24 23:56:09,185 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-24 23:56:09,186 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-24 23:56:09,186 INFO L130 BoogieDeclarations]: Found specification of procedure cw1200_spi_resume [2023-11-24 23:56:09,186 INFO L138 BoogieDeclarations]: Found implementation of procedure cw1200_spi_resume [2023-11-24 23:56:09,186 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_spi_driver_exit_9_2 [2023-11-24 23:56:09,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_spi_driver_exit_9_2 [2023-11-24 23:56:09,186 INFO L130 BoogieDeclarations]: Found specification of procedure cw1200_spi_pm [2023-11-24 23:56:09,187 INFO L138 BoogieDeclarations]: Found implementation of procedure cw1200_spi_pm [2023-11-24 23:56:09,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:56:09,187 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-11-24 23:56:09,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-11-24 23:56:09,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:56:09,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:56:09,736 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:56:09,742 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:56:09,886 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-24 23:56:15,562 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2023-11-24 23:56:15,892 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:56:16,673 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:56:16,673 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-24 23:56:16,675 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:56:16 BoogieIcfgContainer [2023-11-24 23:56:16,675 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:56:16,678 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:56:16,679 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:56:16,682 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:56:16,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:56:05" (1/3) ... [2023-11-24 23:56:16,683 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590ab3f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:56:16, skipping insertion in model container [2023-11-24 23:56:16,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:08" (2/3) ... [2023-11-24 23:56:16,684 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590ab3f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:56:16, skipping insertion in model container [2023-11-24 23:56:16,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:56:16" (3/3) ... [2023-11-24 23:56:16,686 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-cw1200-cw1200_wlan_spi.cil.i [2023-11-24 23:56:16,707 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:56:16,708 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-24 23:56:16,782 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:56:16,789 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;@61739afc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:56:16,790 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-24 23:56:16,799 INFO L276 IsEmpty]: Start isEmpty. Operand has 803 states, 497 states have (on average 1.3541247484909458) internal successors, (673), 505 states have internal predecessors, (673), 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) [2023-11-24 23:56:16,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-24 23:56:16,824 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:16,825 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, 1] [2023-11-24 23:56:16,826 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-24 23:56:16,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:16,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1564461181, now seen corresponding path program 1 times [2023-11-24 23:56:16,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:16,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098069098] [2023-11-24 23:56:16,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:16,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:17,781 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2023-11-24 23:56:17,782 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:17,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098069098] [2023-11-24 23:56:17,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098069098] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:17,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:17,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:56:17,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439618957] [2023-11-24 23:56:17,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:17,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:56:17,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:17,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:56:17,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:56:17,843 INFO L87 Difference]: Start difference. First operand has 803 states, 497 states have (on average 1.3541247484909458) internal successors, (673), 505 states have internal predecessors, (673), 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 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2023-11-24 23:56:20,404 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 [] [2023-11-24 23:56:22,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:56:25,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:56:27,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:56:29,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:56:31,125 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 [] [2023-11-24 23:56:31,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:31,254 INFO L93 Difference]: Finished difference Result 2252 states and 3337 transitions. [2023-11-24 23:56:31,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:56:31,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 135 [2023-11-24 23:56:31,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:31,283 INFO L225 Difference]: With dead ends: 2252 [2023-11-24 23:56:31,283 INFO L226 Difference]: Without dead ends: 1459 [2023-11-24 23:56:31,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:56:31,295 INFO L413 NwaCegarLoop]: 955 mSDtfsCounter, 1016 mSDsluCounter, 909 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 9 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1016 SdHoareTripleChecker+Valid, 1864 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:31,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1016 Valid, 1864 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 398 Invalid, 6 Unknown, 0 Unchecked, 13.2s Time] [2023-11-24 23:56:31,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2023-11-24 23:56:31,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 1455. [2023-11-24 23:56:31,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1455 states, 921 states have (on average 1.3355048859934853) internal successors, (1230), 940 states have internal predecessors, (1230), 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) [2023-11-24 23:56:31,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1455 states to 1455 states and 2092 transitions. [2023-11-24 23:56:31,497 INFO L78 Accepts]: Start accepts. Automaton has 1455 states and 2092 transitions. Word has length 135 [2023-11-24 23:56:31,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:31,499 INFO L495 AbstractCegarLoop]: Abstraction has 1455 states and 2092 transitions. [2023-11-24 23:56:31,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2023-11-24 23:56:31,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states and 2092 transitions. [2023-11-24 23:56:31,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-24 23:56:31,515 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:31,515 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] [2023-11-24 23:56:31,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:56:31,517 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-24 23:56:31,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:31,518 INFO L85 PathProgramCache]: Analyzing trace with hash -818259176, now seen corresponding path program 1 times [2023-11-24 23:56:31,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:31,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129333017] [2023-11-24 23:56:31,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:31,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:31,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:31,863 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2023-11-24 23:56:31,864 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:31,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129333017] [2023-11-24 23:56:31,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129333017] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:31,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:31,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:56:31,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161522413] [2023-11-24 23:56:31,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:31,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:56:31,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:31,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:56:31,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:56:31,871 INFO L87 Difference]: Start difference. First operand 1455 states and 2092 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) [2023-11-24 23:56:34,752 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 [] [2023-11-24 23:56:36,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:56:38,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:56:40,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:56:42,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:56:44,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:56:45,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:45,323 INFO L93 Difference]: Finished difference Result 4075 states and 5844 transitions. [2023-11-24 23:56:45,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:56:45,324 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 [2023-11-24 23:56:45,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:45,352 INFO L225 Difference]: With dead ends: 4075 [2023-11-24 23:56:45,352 INFO L226 Difference]: Without dead ends: 2643 [2023-11-24 23:56:45,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:56:45,368 INFO L413 NwaCegarLoop]: 1105 mSDtfsCounter, 858 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 29 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 1971 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:45,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 1971 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 481 Invalid, 6 Unknown, 0 Unchecked, 13.2s Time] [2023-11-24 23:56:45,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2643 states. [2023-11-24 23:56:45,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2643 to 2614. [2023-11-24 23:56:45,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2614 states, 1648 states have (on average 1.3064320388349515) internal successors, (2153), 1686 states have internal predecessors, (2153), 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) [2023-11-24 23:56:45,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2614 states to 2614 states and 3693 transitions. [2023-11-24 23:56:45,589 INFO L78 Accepts]: Start accepts. Automaton has 2614 states and 3693 transitions. Word has length 133 [2023-11-24 23:56:45,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:45,590 INFO L495 AbstractCegarLoop]: Abstraction has 2614 states and 3693 transitions. [2023-11-24 23:56:45,590 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) [2023-11-24 23:56:45,591 INFO L276 IsEmpty]: Start isEmpty. Operand 2614 states and 3693 transitions. [2023-11-24 23:56:45,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-24 23:56:45,594 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:45,594 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] [2023-11-24 23:56:45,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 23:56:45,595 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-24 23:56:45,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:45,596 INFO L85 PathProgramCache]: Analyzing trace with hash -88963028, now seen corresponding path program 1 times [2023-11-24 23:56:45,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:45,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024197536] [2023-11-24 23:56:45,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:45,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:45,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:45,803 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2023-11-24 23:56:45,804 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:45,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024197536] [2023-11-24 23:56:45,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024197536] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:45,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:45,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:56:45,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685963655] [2023-11-24 23:56:45,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:45,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:56:45,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:45,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:56:45,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:56:45,807 INFO L87 Difference]: Start difference. First operand 2614 states and 3693 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) [2023-11-24 23:56:48,317 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 [] [2023-11-24 23:56:50,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:56:53,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:56:55,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:56:57,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:56:59,213 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 [] [2023-11-24 23:56:59,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:59,390 INFO L93 Difference]: Finished difference Result 7700 states and 11015 transitions. [2023-11-24 23:56:59,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:56:59,391 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 [2023-11-24 23:56:59,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:59,442 INFO L225 Difference]: With dead ends: 7700 [2023-11-24 23:56:59,442 INFO L226 Difference]: Without dead ends: 5109 [2023-11-24 23:56:59,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:56:59,457 INFO L413 NwaCegarLoop]: 950 mSDtfsCounter, 1079 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 6 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1079 SdHoareTripleChecker+Valid, 1851 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 [2023-11-24 23:56:59,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1079 Valid, 1851 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 387 Invalid, 6 Unknown, 0 Unchecked, 13.2s Time] [2023-11-24 23:56:59,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5109 states. [2023-11-24 23:56:59,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5109 to 5076. [2023-11-24 23:56:59,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5076 states, 3218 states have (on average 1.3085767557489123) internal successors, (4211), 3300 states have internal predecessors, (4211), 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) [2023-11-24 23:56:59,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5076 states to 5076 states and 7303 transitions. [2023-11-24 23:56:59,849 INFO L78 Accepts]: Start accepts. Automaton has 5076 states and 7303 transitions. Word has length 137 [2023-11-24 23:56:59,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:59,852 INFO L495 AbstractCegarLoop]: Abstraction has 5076 states and 7303 transitions. [2023-11-24 23:56:59,852 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) [2023-11-24 23:56:59,852 INFO L276 IsEmpty]: Start isEmpty. Operand 5076 states and 7303 transitions. [2023-11-24 23:56:59,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-24 23:56:59,855 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:59,855 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] [2023-11-24 23:56:59,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 23:56:59,856 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-24 23:56:59,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:59,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1610348844, now seen corresponding path program 1 times [2023-11-24 23:56:59,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:59,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330311329] [2023-11-24 23:56:59,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:59,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:59,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:57:00,045 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2023-11-24 23:57:00,046 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:57:00,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330311329] [2023-11-24 23:57:00,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330311329] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:57:00,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:57:00,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:57:00,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673135749] [2023-11-24 23:57:00,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:57:00,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:57:00,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:57:00,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:57:00,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:57:00,049 INFO L87 Difference]: Start difference. First operand 5076 states and 7303 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) [2023-11-24 23:57:03,200 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 []