./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.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_7905ff0d-d603-4858-994c-9f5afae56e8a/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7905ff0d-d603-4858-994c-9f5afae56e8a/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7905ff0d-d603-4858-994c-9f5afae56e8a/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7905ff0d-d603-4858-994c-9f5afae56e8a/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7905ff0d-d603-4858-994c-9f5afae56e8a/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7905ff0d-d603-4858-994c-9f5afae56e8a/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 6a79b35c65887feb0e3310d99b98c096a3638844b86132f83b5aa5c0d07bcad8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:23:29,313 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:23:29,384 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7905ff0d-d603-4858-994c-9f5afae56e8a/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 16:23:29,390 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:23:29,390 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:23:29,414 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:23:29,415 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:23:29,415 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:23:29,416 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:23:29,417 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:23:29,417 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:23:29,418 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:23:29,418 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:23:29,419 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 16:23:29,419 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:23:29,420 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:23:29,421 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 16:23:29,421 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 16:23:29,422 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:23:29,422 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 16:23:29,423 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 16:23:29,424 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 16:23:29,424 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:23:29,425 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 16:23:29,425 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 16:23:29,426 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:23:29,426 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 16:23:29,427 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:23:29,427 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 16:23:29,428 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 16:23:29,428 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:23:29,428 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:23:29,429 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:23:29,429 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:23:29,429 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:23:29,430 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:23:29,430 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:23:29,430 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 16:23:29,430 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 16:23:29,430 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 16:23:29,431 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:23:29,431 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 16:23:29,431 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:23:29,431 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:23:29,432 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_7905ff0d-d603-4858-994c-9f5afae56e8a/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7905ff0d-d603-4858-994c-9f5afae56e8a/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a79b35c65887feb0e3310d99b98c096a3638844b86132f83b5aa5c0d07bcad8 [2023-12-02 16:23:29,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:23:29,688 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:23:29,690 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:23:29,691 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:23:29,692 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:23:29,693 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7905ff0d-d603-4858-994c-9f5afae56e8a/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i [2023-12-02 16:23:32,456 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:23:33,041 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:23:33,042 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7905ff0d-d603-4858-994c-9f5afae56e8a/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i [2023-12-02 16:23:33,113 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7905ff0d-d603-4858-994c-9f5afae56e8a/bin/utaipan-verify-nQ1chXbOIh/data/e3276f04e/62435a12d3f845c2bdcb904787700b1d/FLAG4dff4d8b6 [2023-12-02 16:23:33,127 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7905ff0d-d603-4858-994c-9f5afae56e8a/bin/utaipan-verify-nQ1chXbOIh/data/e3276f04e/62435a12d3f845c2bdcb904787700b1d [2023-12-02 16:23:33,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:23:33,131 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:23:33,132 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:23:33,132 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:23:33,138 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:23:33,138 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:23:33" (1/1) ... [2023-12-02 16:23:33,140 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70b2ac24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:33, skipping insertion in model container [2023-12-02 16:23:33,140 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:23:33" (1/1) ... [2023-12-02 16:23:33,319 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:23:36,555 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_7905ff0d-d603-4858-994c-9f5afae56e8a/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490366,490379] [2023-12-02 16:23:36,559 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_7905ff0d-d603-4858-994c-9f5afae56e8a/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490535,490548] [2023-12-02 16:23:36,560 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_7905ff0d-d603-4858-994c-9f5afae56e8a/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490702,490715] [2023-12-02 16:23:36,560 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_7905ff0d-d603-4858-994c-9f5afae56e8a/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490870,490883] [2023-12-02 16:23:36,571 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:23:36,623 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:23:36,731 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [6701] [2023-12-02 16:23:36,733 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("":); [6708] [2023-12-02 16:23:36,740 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/net/cfg80211.h"), "i" (3014), "i" (12UL)); [6946-6947] [2023-12-02 16:23:37,039 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_7905ff0d-d603-4858-994c-9f5afae56e8a/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490366,490379] [2023-12-02 16:23:37,039 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_7905ff0d-d603-4858-994c-9f5afae56e8a/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490535,490548] [2023-12-02 16:23:37,039 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_7905ff0d-d603-4858-994c-9f5afae56e8a/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490702,490715] [2023-12-02 16:23:37,040 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_7905ff0d-d603-4858-994c-9f5afae56e8a/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490870,490883] [2023-12-02 16:23:37,044 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:23:37,243 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:23:37,250 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:23:37,251 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:37 WrapperNode [2023-12-02 16:23:37,251 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:23:37,252 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:23:37,252 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:23:37,252 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:23:37,260 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:37" (1/1) ... [2023-12-02 16:23:37,341 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:37" (1/1) ... [2023-12-02 16:23:37,599 INFO L138 Inliner]: procedures = 473, calls = 4811, calls flagged for inlining = 229, calls inlined = 199, statements flattened = 9569 [2023-12-02 16:23:37,600 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:23:37,601 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:23:37,601 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:23:37,601 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:23:37,611 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:37" (1/1) ... [2023-12-02 16:23:37,611 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:37" (1/1) ... [2023-12-02 16:23:37,649 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:37" (1/1) ... [2023-12-02 16:23:37,650 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:37" (1/1) ... [2023-12-02 16:23:37,862 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:37" (1/1) ... [2023-12-02 16:23:37,908 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:37" (1/1) ... [2023-12-02 16:23:37,972 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:37" (1/1) ... [2023-12-02 16:23:38,021 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:37" (1/1) ... [2023-12-02 16:23:38,076 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:23:38,077 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:23:38,077 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:23:38,077 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:23:38,078 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:37" (1/1) ... [2023-12-02 16:23:38,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:23:38,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7905ff0d-d603-4858-994c-9f5afae56e8a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:23:38,117 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7905ff0d-d603-4858-994c-9f5afae56e8a/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:23:38,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7905ff0d-d603-4858-994c-9f5afae56e8a/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:23:38,161 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_reset [2023-12-02 16:23:38,161 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_reset [2023-12-02 16:23:38,162 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_frequency_to_channel [2023-12-02 16:23:38,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_frequency_to_channel [2023-12-02 16:23:38,162 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_stop [2023-12-02 16:23:38,162 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_stop [2023-12-02 16:23:38,162 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_config_parameter_str [2023-12-02 16:23:38,162 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_config_parameter_str [2023-12-02 16:23:38,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-12-02 16:23:38,163 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-12-02 16:23:38,163 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_inform_bss [2023-12-02 16:23:38,163 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_inform_bss [2023-12-02 16:23:38,163 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_pause_rx [2023-12-02 16:23:38,163 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_pause_rx [2023-12-02 16:23:38,164 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-12-02 16:23:38,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-12-02 16:23:38,164 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_tx_fixup [2023-12-02 16:23:38,164 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_tx_fixup [2023-12-02 16:23:38,164 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-12-02 16:23:38,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-12-02 16:23:38,165 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_bind [2023-12-02 16:23:38,165 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_bind [2023-12-02 16:23:38,165 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_set_multicast_list [2023-12-02 16:23:38,166 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_set_multicast_list [2023-12-02 16:23:38,166 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2023-12-02 16:23:38,166 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2023-12-02 16:23:38,166 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_purge_paused_rxq [2023-12-02 16:23:38,166 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_purge_paused_rxq [2023-12-02 16:23:38,167 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_netdev_dbg [2023-12-02 16:23:38,167 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_netdev_dbg [2023-12-02 16:23:38,167 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-12-02 16:23:38,167 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_unbind [2023-12-02 16:23:38,168 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_unbind [2023-12-02 16:23:38,168 INFO L130 BoogieDeclarations]: Found specification of procedure set_encr_mode [2023-12-02 16:23:38,168 INFO L138 BoogieDeclarations]: Found implementation of procedure set_encr_mode [2023-12-02 16:23:38,168 INFO L130 BoogieDeclarations]: Found specification of procedure get_rndis_wlan_priv [2023-12-02 16:23:38,168 INFO L138 BoogieDeclarations]: Found implementation of procedure get_rndis_wlan_priv [2023-12-02 16:23:38,168 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-12-02 16:23:38,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-12-02 16:23:38,168 INFO L130 BoogieDeclarations]: Found specification of procedure set_multicast_list [2023-12-02 16:23:38,169 INFO L138 BoogieDeclarations]: Found implementation of procedure set_multicast_list [2023-12-02 16:23:38,169 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2023-12-02 16:23:38,169 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2023-12-02 16:23:38,169 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-12-02 16:23:38,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-12-02 16:23:38,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 16:23:38,169 INFO L130 BoogieDeclarations]: Found specification of procedure set_infra_mode [2023-12-02 16:23:38,169 INFO L138 BoogieDeclarations]: Found implementation of procedure set_infra_mode [2023-12-02 16:23:38,169 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_command [2023-12-02 16:23:38,170 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_command [2023-12-02 16:23:38,170 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_scan_done [2023-12-02 16:23:38,170 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_scan_done [2023-12-02 16:23:38,170 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2023-12-02 16:23:38,170 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2023-12-02 16:23:38,171 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-12-02 16:23:38,171 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-12-02 16:23:38,171 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_fill_station_info [2023-12-02 16:23:38,171 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_fill_station_info [2023-12-02 16:23:38,171 INFO L130 BoogieDeclarations]: Found specification of procedure unknown_early_init [2023-12-02 16:23:38,172 INFO L138 BoogieDeclarations]: Found implementation of procedure unknown_early_init [2023-12-02 16:23:38,172 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_info [2023-12-02 16:23:38,172 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_info [2023-12-02 16:23:38,172 INFO L130 BoogieDeclarations]: Found specification of procedure disassociate [2023-12-02 16:23:38,172 INFO L138 BoogieDeclarations]: Found implementation of procedure disassociate [2023-12-02 16:23:38,172 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies_relative [2023-12-02 16:23:38,172 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies_relative [2023-12-02 16:23:38,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-12-02 16:23:38,173 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_query_oid [2023-12-02 16:23:38,173 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_query_oid [2023-12-02 16:23:38,173 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2023-12-02 16:23:38,173 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2023-12-02 16:23:38,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 16:23:38,174 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-12-02 16:23:38,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-12-02 16:23:38,174 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_tx_timeout [2023-12-02 16:23:38,174 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_tx_timeout [2023-12-02 16:23:38,174 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_free [2023-12-02 16:23:38,175 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_free [2023-12-02 16:23:38,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 16:23:38,175 INFO L130 BoogieDeclarations]: Found specification of procedure is_wpa_key [2023-12-02 16:23:38,175 INFO L138 BoogieDeclarations]: Found implementation of procedure is_wpa_key [2023-12-02 16:23:38,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-12-02 16:23:38,175 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-12-02 16:23:38,175 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2023-12-02 16:23:38,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2023-12-02 16:23:38,176 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_priv [2023-12-02 16:23:38,176 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_priv [2023-12-02 16:23:38,176 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-12-02 16:23:38,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-12-02 16:23:38,176 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_check_bssid_list [2023-12-02 16:23:38,176 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_check_bssid_list [2023-12-02 16:23:38,177 INFO L130 BoogieDeclarations]: Found specification of procedure __toupper [2023-12-02 16:23:38,177 INFO L138 BoogieDeclarations]: Found implementation of procedure __toupper [2023-12-02 16:23:38,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 16:23:38,177 INFO L130 BoogieDeclarations]: Found specification of procedure bcm4320b_early_init [2023-12-02 16:23:38,177 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm4320b_early_init [2023-12-02 16:23:38,177 INFO L130 BoogieDeclarations]: Found specification of procedure set_channel [2023-12-02 16:23:38,177 INFO L138 BoogieDeclarations]: Found implementation of procedure set_channel [2023-12-02 16:23:38,177 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2023-12-02 16:23:38,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2023-12-02 16:23:38,178 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_status [2023-12-02 16:23:38,178 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_status [2023-12-02 16:23:38,178 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2023-12-02 16:23:38,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2023-12-02 16:23:38,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 16:23:38,178 INFO L130 BoogieDeclarations]: Found specification of procedure level_to_qual [2023-12-02 16:23:38,179 INFO L138 BoogieDeclarations]: Found implementation of procedure level_to_qual [2023-12-02 16:23:38,179 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-12-02 16:23:38,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-12-02 16:23:38,179 INFO L130 BoogieDeclarations]: Found specification of procedure set_essid [2023-12-02 16:23:38,179 INFO L138 BoogieDeclarations]: Found implementation of procedure set_essid [2023-12-02 16:23:38,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 16:23:38,180 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_put_bss [2023-12-02 16:23:38,180 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_put_bss [2023-12-02 16:23:38,180 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_start_bssid_list_scan [2023-12-02 16:23:38,180 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_start_bssid_list_scan [2023-12-02 16:23:38,180 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-12-02 16:23:38,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-12-02 16:23:38,180 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_open [2023-12-02 16:23:38,180 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_open [2023-12-02 16:23:38,181 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_copy_module_params [2023-12-02 16:23:38,181 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_copy_module_params [2023-12-02 16:23:38,181 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2023-12-02 16:23:38,181 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2023-12-02 16:23:38,181 INFO L130 BoogieDeclarations]: Found specification of procedure set_auth_mode [2023-12-02 16:23:38,181 INFO L138 BoogieDeclarations]: Found implementation of procedure set_auth_mode [2023-12-02 16:23:38,181 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2023-12-02 16:23:38,182 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2023-12-02 16:23:38,182 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-12-02 16:23:38,182 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-12-02 16:23:38,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:23:38,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:23:38,182 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-12-02 16:23:38,182 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-12-02 16:23:38,182 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2023-12-02 16:23:38,183 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2023-12-02 16:23:38,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-12-02 16:23:38,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-12-02 16:23:38,183 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-12-02 16:23:38,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-12-02 16:23:38,183 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_rndis_wlan_driver_exit_11_2 [2023-12-02 16:23:38,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_rndis_wlan_driver_exit_11_2 [2023-12-02 16:23:38,184 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2023-12-02 16:23:38,184 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2023-12-02 16:23:38,184 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_cipher_to_alg [2023-12-02 16:23:38,184 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_cipher_to_alg [2023-12-02 16:23:38,185 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-12-02 16:23:38,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-12-02 16:23:38,185 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2023-12-02 16:23:38,185 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2023-12-02 16:23:38,185 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_get_channel [2023-12-02 16:23:38,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_get_channel [2023-12-02 16:23:38,186 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2023-12-02 16:23:38,186 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2023-12-02 16:23:38,186 INFO L130 BoogieDeclarations]: Found specification of procedure add_wep_key [2023-12-02 16:23:38,186 INFO L138 BoogieDeclarations]: Found implementation of procedure add_wep_key [2023-12-02 16:23:38,186 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_stop [2023-12-02 16:23:38,187 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_stop [2023-12-02 16:23:38,187 INFO L130 BoogieDeclarations]: Found specification of procedure is_broadcast_ether_addr [2023-12-02 16:23:38,187 INFO L138 BoogieDeclarations]: Found implementation of procedure is_broadcast_ether_addr [2023-12-02 16:23:38,187 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-12-02 16:23:38,187 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-12-02 16:23:38,187 INFO L130 BoogieDeclarations]: Found specification of procedure set_bssid [2023-12-02 16:23:38,187 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bssid [2023-12-02 16:23:38,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 16:23:38,188 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 16:23:38,188 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2023-12-02 16:23:38,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2023-12-02 16:23:38,188 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2023-12-02 16:23:38,188 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2023-12-02 16:23:38,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 16:23:38,188 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-12-02 16:23:38,188 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-12-02 16:23:38,189 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bssid [2023-12-02 16:23:38,189 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bssid [2023-12-02 16:23:38,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 16:23:38,189 INFO L130 BoogieDeclarations]: Found specification of procedure set_device_pmkids [2023-12-02 16:23:38,189 INFO L138 BoogieDeclarations]: Found implementation of procedure set_device_pmkids [2023-12-02 16:23:38,189 INFO L130 BoogieDeclarations]: Found specification of procedure get_device_pmkids [2023-12-02 16:23:38,189 INFO L138 BoogieDeclarations]: Found implementation of procedure get_device_pmkids [2023-12-02 16:23:38,189 INFO L130 BoogieDeclarations]: Found specification of procedure netif_addr_unlock_bh [2023-12-02 16:23:38,189 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_addr_unlock_bh [2023-12-02 16:23:38,190 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2023-12-02 16:23:38,190 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2023-12-02 16:23:38,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 16:23:38,190 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2023-12-02 16:23:38,190 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2023-12-02 16:23:38,190 INFO L130 BoogieDeclarations]: Found specification of procedure next_bssid_list_item [2023-12-02 16:23:38,190 INFO L138 BoogieDeclarations]: Found implementation of procedure next_bssid_list_item [2023-12-02 16:23:38,190 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-12-02 16:23:38,191 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-12-02 16:23:38,191 INFO L130 BoogieDeclarations]: Found specification of procedure set_priv_filter [2023-12-02 16:23:38,191 INFO L138 BoogieDeclarations]: Found implementation of procedure set_priv_filter [2023-12-02 16:23:38,191 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-12-02 16:23:38,191 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-12-02 16:23:38,191 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-12-02 16:23:38,191 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-12-02 16:23:38,191 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_wiphy_params [2023-12-02 16:23:38,191 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_wiphy_params [2023-12-02 16:23:38,191 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-12-02 16:23:38,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-12-02 16:23:38,192 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2023-12-02 16:23:38,192 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2023-12-02 16:23:38,192 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_7_4 [2023-12-02 16:23:38,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_7_4 [2023-12-02 16:23:38,192 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2023-12-02 16:23:38,192 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2023-12-02 16:23:38,192 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-12-02 16:23:38,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-12-02 16:23:38,193 INFO L130 BoogieDeclarations]: Found specification of procedure oid_to_string [2023-12-02 16:23:38,193 INFO L138 BoogieDeclarations]: Found implementation of procedure oid_to_string [2023-12-02 16:23:38,193 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2023-12-02 16:23:38,193 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2023-12-02 16:23:38,193 INFO L130 BoogieDeclarations]: Found specification of procedure deauthenticate [2023-12-02 16:23:38,193 INFO L138 BoogieDeclarations]: Found implementation of procedure deauthenticate [2023-12-02 16:23:38,194 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-12-02 16:23:38,194 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-12-02 16:23:38,194 INFO L130 BoogieDeclarations]: Found specification of procedure bcm4320a_early_init [2023-12-02 16:23:38,194 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm4320a_early_init [2023-12-02 16:23:38,194 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_michael_mic_failure [2023-12-02 16:23:38,194 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_michael_mic_failure [2023-12-02 16:23:38,195 INFO L130 BoogieDeclarations]: Found specification of procedure set_default_iw_params [2023-12-02 16:23:38,195 INFO L138 BoogieDeclarations]: Found implementation of procedure set_default_iw_params [2023-12-02 16:23:38,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 16:23:38,195 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_error_status [2023-12-02 16:23:38,195 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_error_status [2023-12-02 16:23:38,195 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-12-02 16:23:38,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-12-02 16:23:38,196 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume_rx [2023-12-02 16:23:38,196 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume_rx [2023-12-02 16:23:38,196 INFO L130 BoogieDeclarations]: Found specification of procedure ether_addr_equal [2023-12-02 16:23:38,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ether_addr_equal [2023-12-02 16:23:38,196 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2023-12-02 16:23:38,196 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2023-12-02 16:23:38,196 INFO L130 BoogieDeclarations]: Found specification of procedure get_bcm4320_power_dbm [2023-12-02 16:23:38,196 INFO L138 BoogieDeclarations]: Found implementation of procedure get_bcm4320_power_dbm [2023-12-02 16:23:38,196 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-12-02 16:23:38,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-12-02 16:23:38,197 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2023-12-02 16:23:38,197 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2023-12-02 16:23:38,197 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_rx_fixup [2023-12-02 16:23:38,197 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_rx_fixup [2023-12-02 16:23:38,197 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_oid [2023-12-02 16:23:38,197 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_oid [2023-12-02 16:23:38,197 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_indication [2023-12-02 16:23:38,197 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_indication [2023-12-02 16:23:38,198 INFO L130 BoogieDeclarations]: Found specification of procedure get_bssid [2023-12-02 16:23:38,198 INFO L138 BoogieDeclarations]: Found implementation of procedure get_bssid [2023-12-02 16:23:38,198 INFO L130 BoogieDeclarations]: Found specification of procedure is_associated [2023-12-02 16:23:38,198 INFO L138 BoogieDeclarations]: Found implementation of procedure is_associated [2023-12-02 16:23:38,198 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2023-12-02 16:23:38,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 16:23:38,198 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2023-12-02 16:23:38,198 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2023-12-02 16:23:38,198 INFO L130 BoogieDeclarations]: Found specification of procedure debug_print_pmkids [2023-12-02 16:23:38,198 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_print_pmkids [2023-12-02 16:23:38,199 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-12-02 16:23:38,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-12-02 16:23:39,330 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:23:39,334 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:23:39,710 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-12-02 16:23:54,801 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2023-12-02 16:23:55,137 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:23:56,890 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:23:56,890 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 16:23:56,893 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:23:56 BoogieIcfgContainer [2023-12-02 16:23:56,893 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:23:56,896 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:23:56,897 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:23:56,900 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:23:56,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:23:33" (1/3) ... [2023-12-02 16:23:56,901 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@551dc563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:23:56, skipping insertion in model container [2023-12-02 16:23:56,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:37" (2/3) ... [2023-12-02 16:23:56,902 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@551dc563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:23:56, skipping insertion in model container [2023-12-02 16:23:56,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:23:56" (3/3) ... [2023-12-02 16:23:56,903 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i [2023-12-02 16:23:56,924 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:23:56,924 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-12-02 16:23:57,026 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:23:57,033 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;@2f510c47, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:23:57,033 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-02 16:23:57,048 INFO L276 IsEmpty]: Start isEmpty. Operand has 2360 states, 1450 states have (on average 1.3158620689655172) internal successors, (1908), 1454 states have internal predecessors, (1908), 788 states have call successors, (788), 120 states have call predecessors, (788), 119 states have return successors, (780), 780 states have call predecessors, (780), 780 states have call successors, (780) [2023-12-02 16:23:57,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2023-12-02 16:23:57,084 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:23:57,085 INFO L195 NwaCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:23:57,086 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 16:23:57,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:23:57,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1399401794, now seen corresponding path program 1 times [2023-12-02 16:23:57,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:23:57,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189961893] [2023-12-02 16:23:57,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:23:57,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:23:57,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:23:58,514 INFO L134 CoverageAnalysis]: Checked inductivity of 5115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5115 trivial. 0 not checked. [2023-12-02 16:23:58,514 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:23:58,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189961893] [2023-12-02 16:23:58,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189961893] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:23:58,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:23:58,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:23:58,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157420331] [2023-12-02 16:23:58,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:23:58,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:23:58,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:23:58,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:23:58,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:23:58,561 INFO L87 Difference]: Start difference. First operand has 2360 states, 1450 states have (on average 1.3158620689655172) internal successors, (1908), 1454 states have internal predecessors, (1908), 788 states have call successors, (788), 120 states have call predecessors, (788), 119 states have return successors, (780), 780 states have call predecessors, (780), 780 states have call successors, (780) Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2023-12-02 16:24:01,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:24:04,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:24:06,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:24:07,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:24:07,524 INFO L93 Difference]: Finished difference Result 6843 states and 10137 transitions. [2023-12-02 16:24:07,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:24:07,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) Word has length 385 [2023-12-02 16:24:07,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:24:07,590 INFO L225 Difference]: With dead ends: 6843 [2023-12-02 16:24:07,590 INFO L226 Difference]: Without dead ends: 4544 [2023-12-02 16:24:07,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:24:07,616 INFO L413 NwaCegarLoop]: 3080 mSDtfsCounter, 3257 mSDsluCounter, 3030 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3257 SdHoareTripleChecker+Valid, 6110 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:24:07,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3257 Valid, 6110 Invalid, 830 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 814 Invalid, 3 Unknown, 0 Unchecked, 8.6s Time] [2023-12-02 16:24:07,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4544 states. [2023-12-02 16:24:07,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4544 to 4540. [2023-12-02 16:24:07,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4540 states, 2816 states have (on average 1.3128551136363635) internal successors, (3697), 2823 states have internal predecessors, (3697), 1487 states have call successors, (1487), 235 states have call predecessors, (1487), 234 states have return successors, (1483), 1483 states have call predecessors, (1483), 1483 states have call successors, (1483) [2023-12-02 16:24:08,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4540 states to 4540 states and 6667 transitions. [2023-12-02 16:24:08,016 INFO L78 Accepts]: Start accepts. Automaton has 4540 states and 6667 transitions. Word has length 385 [2023-12-02 16:24:08,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:24:08,018 INFO L495 AbstractCegarLoop]: Abstraction has 4540 states and 6667 transitions. [2023-12-02 16:24:08,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2023-12-02 16:24:08,019 INFO L276 IsEmpty]: Start isEmpty. Operand 4540 states and 6667 transitions. [2023-12-02 16:24:08,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2023-12-02 16:24:08,043 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:24:08,043 INFO L195 NwaCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:24:08,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 16:24:08,044 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 16:24:08,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:24:08,045 INFO L85 PathProgramCache]: Analyzing trace with hash 2114730327, now seen corresponding path program 1 times [2023-12-02 16:24:08,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:24:08,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474660183] [2023-12-02 16:24:08,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:24:08,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:24:08,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:24:08,909 INFO L134 CoverageAnalysis]: Checked inductivity of 5118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5118 trivial. 0 not checked. [2023-12-02 16:24:08,909 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:24:08,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474660183] [2023-12-02 16:24:08,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474660183] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:24:08,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:24:08,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:24:08,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168110097] [2023-12-02 16:24:08,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:24:08,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:24:08,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:24:08,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:24:08,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:24:08,914 INFO L87 Difference]: Start difference. First operand 4540 states and 6667 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2023-12-02 16:24:12,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:24:15,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:24:17,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:24:18,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:24:18,064 INFO L93 Difference]: Finished difference Result 11178 states and 16397 transitions. [2023-12-02 16:24:18,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:24:18,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 427 [2023-12-02 16:24:18,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:24:18,108 INFO L225 Difference]: With dead ends: 11178 [2023-12-02 16:24:18,108 INFO L226 Difference]: Without dead ends: 6711 [2023-12-02 16:24:18,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:24:18,129 INFO L413 NwaCegarLoop]: 3058 mSDtfsCounter, 3222 mSDsluCounter, 3023 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3222 SdHoareTripleChecker+Valid, 6081 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2023-12-02 16:24:18,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3222 Valid, 6081 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 820 Invalid, 3 Unknown, 0 Unchecked, 8.8s Time] [2023-12-02 16:24:18,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6711 states. [2023-12-02 16:24:18,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6711 to 6685. [2023-12-02 16:24:18,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6685 states, 4162 states have (on average 1.3113887554060548) internal successors, (5458), 4175 states have internal predecessors, (5458), 2166 states have call successors, (2166), 355 states have call predecessors, (2166), 354 states have return successors, (2162), 2157 states have call predecessors, (2162), 2162 states have call successors, (2162) [2023-12-02 16:24:18,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6685 states to 6685 states and 9786 transitions. [2023-12-02 16:24:18,564 INFO L78 Accepts]: Start accepts. Automaton has 6685 states and 9786 transitions. Word has length 427 [2023-12-02 16:24:18,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:24:18,565 INFO L495 AbstractCegarLoop]: Abstraction has 6685 states and 9786 transitions. [2023-12-02 16:24:18,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2023-12-02 16:24:18,566 INFO L276 IsEmpty]: Start isEmpty. Operand 6685 states and 9786 transitions. [2023-12-02 16:24:18,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2023-12-02 16:24:18,584 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:24:18,585 INFO L195 NwaCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:24:18,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 16:24:18,585 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 16:24:18,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:24:18,586 INFO L85 PathProgramCache]: Analyzing trace with hash -82380841, now seen corresponding path program 1 times [2023-12-02 16:24:18,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:24:18,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857340249] [2023-12-02 16:24:18,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:24:18,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:24:18,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:24:19,207 INFO L134 CoverageAnalysis]: Checked inductivity of 5118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5118 trivial. 0 not checked. [2023-12-02 16:24:19,207 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:24:19,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857340249] [2023-12-02 16:24:19,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857340249] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:24:19,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:24:19,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:24:19,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339567425] [2023-12-02 16:24:19,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:24:19,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:24:19,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:24:19,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:24:19,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:24:19,211 INFO L87 Difference]: Start difference. First operand 6685 states and 9786 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2023-12-02 16:24:22,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:24:25,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:24:27,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:24:27,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:24:27,883 INFO L93 Difference]: Finished difference Result 17613 states and 25764 transitions. [2023-12-02 16:24:27,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:24:27,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 428 [2023-12-02 16:24:27,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:24:27,986 INFO L225 Difference]: With dead ends: 17613 [2023-12-02 16:24:27,987 INFO L226 Difference]: Without dead ends: 11001 [2023-12-02 16:24:28,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:24:28,035 INFO L413 NwaCegarLoop]: 3114 mSDtfsCounter, 3221 mSDsluCounter, 3023 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3221 SdHoareTripleChecker+Valid, 6137 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:24:28,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3221 Valid, 6137 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 835 Invalid, 3 Unknown, 0 Unchecked, 8.2s Time] [2023-12-02 16:24:28,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11001 states. [2023-12-02 16:24:28,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11001 to 10975. [2023-12-02 16:24:28,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10975 states, 6854 states have (on average 1.310183834257368) internal successors, (8980), 6879 states have internal predecessors, (8980), 3524 states have call successors, (3524), 595 states have call predecessors, (3524), 594 states have return successors, (3520), 3505 states have call predecessors, (3520), 3520 states have call successors, (3520) [2023-12-02 16:24:28,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10975 states to 10975 states and 16024 transitions. [2023-12-02 16:24:28,740 INFO L78 Accepts]: Start accepts. Automaton has 10975 states and 16024 transitions. Word has length 428 [2023-12-02 16:24:28,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:24:28,741 INFO L495 AbstractCegarLoop]: Abstraction has 10975 states and 16024 transitions. [2023-12-02 16:24:28,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2023-12-02 16:24:28,743 INFO L276 IsEmpty]: Start isEmpty. Operand 10975 states and 16024 transitions. [2023-12-02 16:24:28,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2023-12-02 16:24:28,755 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:24:28,755 INFO L195 NwaCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:24:28,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 16:24:28,756 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 16:24:28,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:24:28,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1741358932, now seen corresponding path program 1 times [2023-12-02 16:24:28,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:24:28,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527416500] [2023-12-02 16:24:28,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:24:28,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:24:28,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:24:29,399 INFO L134 CoverageAnalysis]: Checked inductivity of 5118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5118 trivial. 0 not checked. [2023-12-02 16:24:29,400 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:24:29,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527416500] [2023-12-02 16:24:29,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527416500] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:24:29,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:24:29,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:24:29,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959853863] [2023-12-02 16:24:29,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:24:29,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:24:29,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:24:29,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:24:29,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:24:29,402 INFO L87 Difference]: Start difference. First operand 10975 states and 16024 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2023-12-02 16:24:32,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:24:35,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:24:37,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:24:38,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:24:38,352 INFO L93 Difference]: Finished difference Result 29980 states and 43773 transitions. [2023-12-02 16:24:38,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:24:38,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 426 [2023-12-02 16:24:38,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:24:38,435 INFO L225 Difference]: With dead ends: 29980 [2023-12-02 16:24:38,435 INFO L226 Difference]: Without dead ends: 19078 [2023-12-02 16:24:38,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:24:38,476 INFO L413 NwaCegarLoop]: 3370 mSDtfsCounter, 3223 mSDsluCounter, 3023 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3223 SdHoareTripleChecker+Valid, 6393 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:24:38,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3223 Valid, 6393 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 883 Invalid, 3 Unknown, 0 Unchecked, 8.4s Time] [2023-12-02 16:24:38,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19078 states. [2023-12-02 16:24:39,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19078 to 19052. [2023-12-02 16:24:39,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19052 states, 11933 states have (on average 1.3098969244950975) internal successors, (15631), 11982 states have internal predecessors, (15631), 6074 states have call successors, (6074), 1043 states have call predecessors, (6074), 1042 states have return successors, (6070), 6035 states have call predecessors, (6070), 6070 states have call successors, (6070) [2023-12-02 16:24:39,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19052 states to 19052 states and 27775 transitions. [2023-12-02 16:24:39,665 INFO L78 Accepts]: Start accepts. Automaton has 19052 states and 27775 transitions. Word has length 426 [2023-12-02 16:24:39,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:24:39,667 INFO L495 AbstractCegarLoop]: Abstraction has 19052 states and 27775 transitions. [2023-12-02 16:24:39,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2023-12-02 16:24:39,667 INFO L276 IsEmpty]: Start isEmpty. Operand 19052 states and 27775 transitions. [2023-12-02 16:24:39,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2023-12-02 16:24:39,677 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:24:39,677 INFO L195 NwaCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:24:39,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 16:24:39,678 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 16:24:39,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:24:39,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1707764447, now seen corresponding path program 1 times [2023-12-02 16:24:39,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:24:39,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410404426] [2023-12-02 16:24:39,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:24:39,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:24:39,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:24:40,751 INFO L134 CoverageAnalysis]: Checked inductivity of 5374 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5374 trivial. 0 not checked. [2023-12-02 16:24:40,752 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:24:40,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410404426] [2023-12-02 16:24:40,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410404426] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:24:40,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:24:40,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:24:40,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306760942] [2023-12-02 16:24:40,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:24:40,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:24:40,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:24:40,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:24:40,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:24:40,755 INFO L87 Difference]: Start difference. First operand 19052 states and 27775 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2023-12-02 16:24:44,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:24:46,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:24:48,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:24:49,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:24:49,990 INFO L93 Difference]: Finished difference Result 19058 states and 27780 transitions. [2023-12-02 16:24:49,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:24:49,990 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 432 [2023-12-02 16:24:49,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:24:50,086 INFO L225 Difference]: With dead ends: 19058 [2023-12-02 16:24:50,086 INFO L226 Difference]: Without dead ends: 19056 [2023-12-02 16:24:50,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:24:50,097 INFO L413 NwaCegarLoop]: 3051 mSDtfsCounter, 3337 mSDsluCounter, 6089 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3347 SdHoareTripleChecker+Valid, 9140 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:24:50,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3347 Valid, 9140 Invalid, 1190 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1186 Invalid, 3 Unknown, 0 Unchecked, 8.6s Time] [2023-12-02 16:24:50,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19056 states. [2023-12-02 16:24:50,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19056 to 19056. [2023-12-02 16:24:51,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19056 states, 11936 states have (on average 1.309819034852547) internal successors, (15634), 11985 states have internal predecessors, (15634), 6074 states have call successors, (6074), 1044 states have call predecessors, (6074), 1043 states have return successors, (6070), 6035 states have call predecessors, (6070), 6070 states have call successors, (6070) [2023-12-02 16:24:51,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19056 states to 19056 states and 27778 transitions. [2023-12-02 16:24:51,144 INFO L78 Accepts]: Start accepts. Automaton has 19056 states and 27778 transitions. Word has length 432 [2023-12-02 16:24:51,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:24:51,145 INFO L495 AbstractCegarLoop]: Abstraction has 19056 states and 27778 transitions. [2023-12-02 16:24:51,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2023-12-02 16:24:51,145 INFO L276 IsEmpty]: Start isEmpty. Operand 19056 states and 27778 transitions. [2023-12-02 16:24:51,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2023-12-02 16:24:51,158 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:24:51,158 INFO L195 NwaCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:24:51,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 16:24:51,158 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 16:24:51,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:24:51,159 INFO L85 PathProgramCache]: Analyzing trace with hash -63156996, now seen corresponding path program 1 times [2023-12-02 16:24:51,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:24:51,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252121938] [2023-12-02 16:24:51,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:24:51,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:24:51,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:24:51,922 INFO L134 CoverageAnalysis]: Checked inductivity of 5118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5118 trivial. 0 not checked. [2023-12-02 16:24:51,922 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:24:51,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252121938] [2023-12-02 16:24:51,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252121938] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:24:51,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:24:51,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:24:51,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669883332] [2023-12-02 16:24:51,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:24:51,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:24:51,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:24:51,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:24:51,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:24:51,924 INFO L87 Difference]: Start difference. First operand 19056 states and 27778 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2023-12-02 16:24:55,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:24:57,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:24:59,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:25:02,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:25:02,196 INFO L93 Difference]: Finished difference Result 55661 states and 81144 transitions. [2023-12-02 16:25:02,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:25:02,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 434 [2023-12-02 16:25:02,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:25:02,346 INFO L225 Difference]: With dead ends: 55661 [2023-12-02 16:25:02,346 INFO L226 Difference]: Without dead ends: 36678 [2023-12-02 16:25:02,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:25:02,407 INFO L413 NwaCegarLoop]: 3785 mSDtfsCounter, 3178 mSDsluCounter, 3027 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 16 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3178 SdHoareTripleChecker+Valid, 6812 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2023-12-02 16:25:02,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3178 Valid, 6812 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 865 Invalid, 3 Unknown, 0 Unchecked, 8.8s Time] [2023-12-02 16:25:02,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36678 states. [2023-12-02 16:25:04,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36678 to 36632. [2023-12-02 16:25:04,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36632 states, 23003 states have (on average 1.307655523192627) internal successors, (30080), 23117 states have internal predecessors, (30080), 11624 states have call successors, (11624), 2003 states have call predecessors, (11624), 2002 states have return successors, (11620), 11529 states have call predecessors, (11620), 11620 states have call successors, (11620) [2023-12-02 16:25:04,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36632 states to 36632 states and 53324 transitions. [2023-12-02 16:25:04,329 INFO L78 Accepts]: Start accepts. Automaton has 36632 states and 53324 transitions. Word has length 434 [2023-12-02 16:25:04,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:25:04,330 INFO L495 AbstractCegarLoop]: Abstraction has 36632 states and 53324 transitions. [2023-12-02 16:25:04,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2023-12-02 16:25:04,330 INFO L276 IsEmpty]: Start isEmpty. Operand 36632 states and 53324 transitions. [2023-12-02 16:25:04,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2023-12-02 16:25:04,339 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:25:04,340 INFO L195 NwaCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:25:04,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 16:25:04,340 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 16:25:04,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:25:04,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1223104164, now seen corresponding path program 1 times [2023-12-02 16:25:04,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:25:04,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982525751] [2023-12-02 16:25:04,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:25:04,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:25:04,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:25:05,330 INFO L134 CoverageAnalysis]: Checked inductivity of 5377 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5375 trivial. 0 not checked. [2023-12-02 16:25:05,330 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:25:05,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982525751] [2023-12-02 16:25:05,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982525751] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:25:05,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:25:05,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:25:05,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777902989] [2023-12-02 16:25:05,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:25:05,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:25:05,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:25:05,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:25:05,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:25:05,333 INFO L87 Difference]: Start difference. First operand 36632 states and 53324 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2023-12-02 16:25:08,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:25:10,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:25:12,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:25:14,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:25:14,933 INFO L93 Difference]: Finished difference Result 37054 states and 53777 transitions. [2023-12-02 16:25:14,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:25:14,933 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 438 [2023-12-02 16:25:14,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:25:15,099 INFO L225 Difference]: With dead ends: 37054 [2023-12-02 16:25:15,099 INFO L226 Difference]: Without dead ends: 37052 [2023-12-02 16:25:15,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:25:15,111 INFO L413 NwaCegarLoop]: 3052 mSDtfsCounter, 3299 mSDsluCounter, 6131 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3308 SdHoareTripleChecker+Valid, 9183 SdHoareTripleChecker+Invalid, 1211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:25:15,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3308 Valid, 9183 Invalid, 1211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1206 Invalid, 3 Unknown, 0 Unchecked, 8.4s Time] [2023-12-02 16:25:15,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37052 states. [2023-12-02 16:25:17,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37052 to 37052. [2023-12-02 16:25:17,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37052 states, 23246 states have (on average 1.3065043448335198) internal successors, (30371), 23360 states have internal predecessors, (30371), 11704 states have call successors, (11704), 2100 states have call predecessors, (11704), 2099 states have return successors, (11700), 11609 states have call predecessors, (11700), 11700 states have call successors, (11700) [2023-12-02 16:25:17,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37052 states to 37052 states and 53775 transitions. [2023-12-02 16:25:17,183 INFO L78 Accepts]: Start accepts. Automaton has 37052 states and 53775 transitions. Word has length 438 [2023-12-02 16:25:17,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:25:17,184 INFO L495 AbstractCegarLoop]: Abstraction has 37052 states and 53775 transitions. [2023-12-02 16:25:17,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2023-12-02 16:25:17,184 INFO L276 IsEmpty]: Start isEmpty. Operand 37052 states and 53775 transitions. [2023-12-02 16:25:17,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2023-12-02 16:25:17,203 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:25:17,204 INFO L195 NwaCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:25:17,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 16:25:17,204 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 16:25:17,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:25:17,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1537681279, now seen corresponding path program 1 times [2023-12-02 16:25:17,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:25:17,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219747148] [2023-12-02 16:25:17,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:25:17,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:25:17,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:25:18,325 INFO L134 CoverageAnalysis]: Checked inductivity of 5382 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5378 trivial. 0 not checked. [2023-12-02 16:25:18,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:25:18,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219747148] [2023-12-02 16:25:18,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219747148] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:25:18,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:25:18,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:25:18,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999035785] [2023-12-02 16:25:18,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:25:18,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:25:18,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:25:18,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:25:18,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:25:18,328 INFO L87 Difference]: Start difference. First operand 37052 states and 53775 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2023-12-02 16:25:21,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:25:23,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:25:25,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:25:28,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:25:28,427 INFO L93 Difference]: Finished difference Result 37058 states and 53780 transitions. [2023-12-02 16:25:28,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:25:28,427 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 442 [2023-12-02 16:25:28,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:25:28,542 INFO L225 Difference]: With dead ends: 37058 [2023-12-02 16:25:28,542 INFO L226 Difference]: Without dead ends: 37056 [2023-12-02 16:25:28,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:25:28,554 INFO L413 NwaCegarLoop]: 3054 mSDtfsCounter, 3332 mSDsluCounter, 6089 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3340 SdHoareTripleChecker+Valid, 9143 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:25:28,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3340 Valid, 9143 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1186 Invalid, 3 Unknown, 0 Unchecked, 8.6s Time] [2023-12-02 16:25:28,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37056 states. [2023-12-02 16:25:30,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37056 to 37056. [2023-12-02 16:25:30,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37056 states, 23249 states have (on average 1.306464794184696) internal successors, (30374), 23363 states have internal predecessors, (30374), 11704 states have call successors, (11704), 2101 states have call predecessors, (11704), 2100 states have return successors, (11700), 11609 states have call predecessors, (11700), 11700 states have call successors, (11700) [2023-12-02 16:25:30,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37056 states to 37056 states and 53778 transitions. [2023-12-02 16:25:30,739 INFO L78 Accepts]: Start accepts. Automaton has 37056 states and 53778 transitions. Word has length 442 [2023-12-02 16:25:30,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:25:30,740 INFO L495 AbstractCegarLoop]: Abstraction has 37056 states and 53778 transitions. [2023-12-02 16:25:30,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2023-12-02 16:25:30,740 INFO L276 IsEmpty]: Start isEmpty. Operand 37056 states and 53778 transitions. [2023-12-02 16:25:30,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2023-12-02 16:25:30,753 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:25:30,753 INFO L195 NwaCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:25:30,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 16:25:30,754 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 16:25:30,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:25:30,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1851796093, now seen corresponding path program 1 times [2023-12-02 16:25:30,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:25:30,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669066518] [2023-12-02 16:25:30,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:25:30,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:25:30,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:25:31,637 INFO L134 CoverageAnalysis]: Checked inductivity of 5391 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5385 trivial. 0 not checked. [2023-12-02 16:25:31,637 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:25:31,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669066518] [2023-12-02 16:25:31,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669066518] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:25:31,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:25:31,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:25:31,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732190805] [2023-12-02 16:25:31,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:25:31,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:25:31,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:25:31,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:25:31,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:25:31,640 INFO L87 Difference]: Start difference. First operand 37056 states and 53778 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2023-12-02 16:25:34,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:25:36,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:25:38,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:25:41,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:25:41,483 INFO L93 Difference]: Finished difference Result 37062 states and 53783 transitions. [2023-12-02 16:25:41,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:25:41,483 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 450 [2023-12-02 16:25:41,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:25:41,609 INFO L225 Difference]: With dead ends: 37062 [2023-12-02 16:25:41,610 INFO L226 Difference]: Without dead ends: 37060 [2023-12-02 16:25:41,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:25:41,630 INFO L413 NwaCegarLoop]: 3054 mSDtfsCounter, 3333 mSDsluCounter, 6089 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3340 SdHoareTripleChecker+Valid, 9143 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:25:41,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3340 Valid, 9143 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1186 Invalid, 3 Unknown, 0 Unchecked, 8.4s Time] [2023-12-02 16:25:41,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37060 states. [2023-12-02 16:25:43,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37060 to 37060. [2023-12-02 16:25:43,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37060 states, 23252 states have (on average 1.3064252537416137) internal successors, (30377), 23366 states have internal predecessors, (30377), 11704 states have call successors, (11704), 2102 states have call predecessors, (11704), 2101 states have return successors, (11700), 11609 states have call predecessors, (11700), 11700 states have call successors, (11700) [2023-12-02 16:25:44,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37060 states to 37060 states and 53781 transitions. [2023-12-02 16:25:44,028 INFO L78 Accepts]: Start accepts. Automaton has 37060 states and 53781 transitions. Word has length 450 [2023-12-02 16:25:44,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:25:44,029 INFO L495 AbstractCegarLoop]: Abstraction has 37060 states and 53781 transitions. [2023-12-02 16:25:44,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2023-12-02 16:25:44,029 INFO L276 IsEmpty]: Start isEmpty. Operand 37060 states and 53781 transitions. [2023-12-02 16:25:44,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2023-12-02 16:25:44,042 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:25:44,042 INFO L195 NwaCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 5, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:25:44,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 16:25:44,042 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 16:25:44,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:25:44,043 INFO L85 PathProgramCache]: Analyzing trace with hash -752202721, now seen corresponding path program 1 times [2023-12-02 16:25:44,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:25:44,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499264888] [2023-12-02 16:25:44,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:25:44,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:25:44,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:25:44,878 INFO L134 CoverageAnalysis]: Checked inductivity of 5406 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5398 trivial. 0 not checked. [2023-12-02 16:25:44,878 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:25:44,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499264888] [2023-12-02 16:25:44,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499264888] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:25:44,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:25:44,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:25:44,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711114476] [2023-12-02 16:25:44,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:25:44,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:25:44,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:25:44,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:25:44,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:25:44,880 INFO L87 Difference]: Start difference. First operand 37060 states and 53781 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2023-12-02 16:25:48,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:25:50,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:25:52,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:25:54,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:25:54,884 INFO L93 Difference]: Finished difference Result 37066 states and 53786 transitions. [2023-12-02 16:25:54,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:25:54,884 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) Word has length 452 [2023-12-02 16:25:54,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:25:54,993 INFO L225 Difference]: With dead ends: 37066 [2023-12-02 16:25:54,993 INFO L226 Difference]: Without dead ends: 37064 [2023-12-02 16:25:55,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:25:55,009 INFO L413 NwaCegarLoop]: 3054 mSDtfsCounter, 3332 mSDsluCounter, 6089 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3338 SdHoareTripleChecker+Valid, 9143 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:25:55,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3338 Valid, 9143 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1186 Invalid, 3 Unknown, 0 Unchecked, 8.4s Time] [2023-12-02 16:25:55,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37064 states. [2023-12-02 16:25:57,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37064 to 37064. [2023-12-02 16:25:57,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37064 states, 23255 states have (on average 1.3063857235003224) internal successors, (30380), 23369 states have internal predecessors, (30380), 11704 states have call successors, (11704), 2103 states have call predecessors, (11704), 2102 states have return successors, (11700), 11609 states have call predecessors, (11700), 11700 states have call successors, (11700) [2023-12-02 16:25:57,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37064 states to 37064 states and 53784 transitions. [2023-12-02 16:25:57,335 INFO L78 Accepts]: Start accepts. Automaton has 37064 states and 53784 transitions. Word has length 452 [2023-12-02 16:25:57,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:25:57,336 INFO L495 AbstractCegarLoop]: Abstraction has 37064 states and 53784 transitions. [2023-12-02 16:25:57,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2023-12-02 16:25:57,336 INFO L276 IsEmpty]: Start isEmpty. Operand 37064 states and 53784 transitions. [2023-12-02 16:25:57,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2023-12-02 16:25:57,350 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:25:57,351 INFO L195 NwaCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 6, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:25:57,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-02 16:25:57,351 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 16:25:57,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:25:57,352 INFO L85 PathProgramCache]: Analyzing trace with hash -666967142, now seen corresponding path program 1 times [2023-12-02 16:25:57,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:25:57,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495938369] [2023-12-02 16:25:57,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:25:57,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:25:57,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:25:58,216 INFO L134 CoverageAnalysis]: Checked inductivity of 5424 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5414 trivial. 0 not checked. [2023-12-02 16:25:58,216 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:25:58,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495938369] [2023-12-02 16:25:58,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495938369] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:25:58,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:25:58,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:25:58,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635312985] [2023-12-02 16:25:58,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:25:58,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:25:58,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:25:58,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:25:58,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:25:58,219 INFO L87 Difference]: Start difference. First operand 37064 states and 53784 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2023-12-02 16:26:01,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:26:03,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:26:05,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:26:08,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:26:08,841 INFO L93 Difference]: Finished difference Result 37070 states and 53789 transitions. [2023-12-02 16:26:08,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:26:08,841 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 457 [2023-12-02 16:26:08,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:26:08,963 INFO L225 Difference]: With dead ends: 37070 [2023-12-02 16:26:08,963 INFO L226 Difference]: Without dead ends: 37068 [2023-12-02 16:26:08,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:26:08,982 INFO L413 NwaCegarLoop]: 3054 mSDtfsCounter, 3332 mSDsluCounter, 6089 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3337 SdHoareTripleChecker+Valid, 9143 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:26:08,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3337 Valid, 9143 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1186 Invalid, 3 Unknown, 0 Unchecked, 8.5s Time] [2023-12-02 16:26:09,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37068 states. [2023-12-02 16:26:11,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37068 to 37068. [2023-12-02 16:26:11,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37068 states, 23258 states have (on average 1.3063462034568751) internal successors, (30383), 23372 states have internal predecessors, (30383), 11704 states have call successors, (11704), 2104 states have call predecessors, (11704), 2103 states have return successors, (11700), 11609 states have call predecessors, (11700), 11700 states have call successors, (11700) [2023-12-02 16:26:11,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37068 states to 37068 states and 53787 transitions. [2023-12-02 16:26:11,465 INFO L78 Accepts]: Start accepts. Automaton has 37068 states and 53787 transitions. Word has length 457 [2023-12-02 16:26:11,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:26:11,466 INFO L495 AbstractCegarLoop]: Abstraction has 37068 states and 53787 transitions. [2023-12-02 16:26:11,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2023-12-02 16:26:11,466 INFO L276 IsEmpty]: Start isEmpty. Operand 37068 states and 53787 transitions. [2023-12-02 16:26:11,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2023-12-02 16:26:11,485 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:26:11,486 INFO L195 NwaCegarLoop]: trace histogram [38, 36, 36, 36, 36, 36, 36, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:26:11,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-02 16:26:11,486 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 16:26:11,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:26:11,487 INFO L85 PathProgramCache]: Analyzing trace with hash -886133366, now seen corresponding path program 1 times [2023-12-02 16:26:11,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:26:11,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057753944] [2023-12-02 16:26:11,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:26:11,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:26:11,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:26:12,002 INFO L134 CoverageAnalysis]: Checked inductivity of 5203 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5192 trivial. 0 not checked. [2023-12-02 16:26:12,002 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:26:12,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057753944] [2023-12-02 16:26:12,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057753944] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:26:12,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:26:12,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:26:12,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030080382] [2023-12-02 16:26:12,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:26:12,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:26:12,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:26:12,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:26:12,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:26:12,005 INFO L87 Difference]: Start difference. First operand 37068 states and 53787 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2023-12-02 16:26:14,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:26:19,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:26:21,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:26:23,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:26:23,620 INFO L93 Difference]: Finished difference Result 88493 states and 128377 transitions. [2023-12-02 16:26:23,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:26:23,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) Word has length 456 [2023-12-02 16:26:23,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:26:23,817 INFO L225 Difference]: With dead ends: 88493 [2023-12-02 16:26:23,817 INFO L226 Difference]: Without dead ends: 51498 [2023-12-02 16:26:23,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:26:23,913 INFO L413 NwaCegarLoop]: 3896 mSDtfsCounter, 3173 mSDsluCounter, 3042 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3173 SdHoareTripleChecker+Valid, 6938 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2023-12-02 16:26:23,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3173 Valid, 6938 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 930 Invalid, 3 Unknown, 0 Unchecked, 8.7s Time] [2023-12-02 16:26:23,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51498 states. [2023-12-02 16:26:27,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51498 to 51436. [2023-12-02 16:26:27,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51436 states, 32271 states have (on average 1.305568467044715) internal successors, (42132), 32436 states have internal predecessors, (42132), 16245 states have call successors, (16245), 2926 states have call predecessors, (16245), 2917 states have return successors, (16241), 16098 states have call predecessors, (16241), 16241 states have call successors, (16241) [2023-12-02 16:26:27,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51436 states to 51436 states and 74618 transitions. [2023-12-02 16:26:27,593 INFO L78 Accepts]: Start accepts. Automaton has 51436 states and 74618 transitions. Word has length 456 [2023-12-02 16:26:27,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:26:27,594 INFO L495 AbstractCegarLoop]: Abstraction has 51436 states and 74618 transitions. [2023-12-02 16:26:27,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2023-12-02 16:26:27,594 INFO L276 IsEmpty]: Start isEmpty. Operand 51436 states and 74618 transitions. [2023-12-02 16:26:27,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2023-12-02 16:26:27,608 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:26:27,608 INFO L195 NwaCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 7, 6, 6, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:26:27,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-02 16:26:27,608 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 16:26:27,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:26:27,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1567742143, now seen corresponding path program 1 times [2023-12-02 16:26:27,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:26:27,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376263346] [2023-12-02 16:26:27,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:26:27,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:26:27,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:26:28,534 INFO L134 CoverageAnalysis]: Checked inductivity of 5446 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 5434 trivial. 0 not checked. [2023-12-02 16:26:28,534 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:26:28,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376263346] [2023-12-02 16:26:28,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376263346] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:26:28,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:26:28,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:26:28,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672655594] [2023-12-02 16:26:28,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:26:28,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:26:28,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:26:28,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:26:28,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:26:28,536 INFO L87 Difference]: Start difference. First operand 51436 states and 74618 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2023-12-02 16:26:31,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:26:33,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:26:35,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:26:39,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:26:39,754 INFO L93 Difference]: Finished difference Result 51442 states and 74623 transitions. [2023-12-02 16:26:39,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:26:39,755 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 462 [2023-12-02 16:26:39,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:26:40,033 INFO L225 Difference]: With dead ends: 51442 [2023-12-02 16:26:40,033 INFO L226 Difference]: Without dead ends: 51440 [2023-12-02 16:26:40,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:26:40,059 INFO L413 NwaCegarLoop]: 3054 mSDtfsCounter, 3332 mSDsluCounter, 6089 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3336 SdHoareTripleChecker+Valid, 9143 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:26:40,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3336 Valid, 9143 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1186 Invalid, 3 Unknown, 0 Unchecked, 8.5s Time] [2023-12-02 16:26:40,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51440 states. [2023-12-02 16:26:43,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51440 to 51440. [2023-12-02 16:26:43,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51440 states, 32274 states have (on average 1.3055400632087748) internal successors, (42135), 32439 states have internal predecessors, (42135), 16245 states have call successors, (16245), 2927 states have call predecessors, (16245), 2918 states have return successors, (16241), 16098 states have call predecessors, (16241), 16241 states have call successors, (16241) [2023-12-02 16:26:43,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51440 states to 51440 states and 74621 transitions. [2023-12-02 16:26:43,605 INFO L78 Accepts]: Start accepts. Automaton has 51440 states and 74621 transitions. Word has length 462 [2023-12-02 16:26:43,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:26:43,605 INFO L495 AbstractCegarLoop]: Abstraction has 51440 states and 74621 transitions. [2023-12-02 16:26:43,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2023-12-02 16:26:43,605 INFO L276 IsEmpty]: Start isEmpty. Operand 51440 states and 74621 transitions. [2023-12-02 16:26:43,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2023-12-02 16:26:43,616 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:26:43,616 INFO L195 NwaCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 8, 7, 7, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:26:43,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-02 16:26:43,617 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 16:26:43,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:26:43,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1005328956, now seen corresponding path program 1 times [2023-12-02 16:26:43,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:26:43,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318368149] [2023-12-02 16:26:43,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:26:43,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:26:43,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:26:44,375 INFO L134 CoverageAnalysis]: Checked inductivity of 5473 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5459 trivial. 0 not checked. [2023-12-02 16:26:44,375 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:26:44,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318368149] [2023-12-02 16:26:44,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318368149] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:26:44,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:26:44,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:26:44,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866724999] [2023-12-02 16:26:44,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:26:44,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:26:44,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:26:44,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:26:44,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:26:44,377 INFO L87 Difference]: Start difference. First operand 51440 states and 74621 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2023-12-02 16:26:47,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:26:49,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:26:51,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:26:55,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:26:55,724 INFO L93 Difference]: Finished difference Result 51446 states and 74626 transitions. [2023-12-02 16:26:55,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:26:55,725 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 468 [2023-12-02 16:26:55,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:26:55,878 INFO L225 Difference]: With dead ends: 51446 [2023-12-02 16:26:55,878 INFO L226 Difference]: Without dead ends: 51444 [2023-12-02 16:26:55,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:26:55,898 INFO L413 NwaCegarLoop]: 3054 mSDtfsCounter, 3332 mSDsluCounter, 6089 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3335 SdHoareTripleChecker+Valid, 9143 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:26:55,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3335 Valid, 9143 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1186 Invalid, 3 Unknown, 0 Unchecked, 8.2s Time] [2023-12-02 16:26:55,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51444 states. [2023-12-02 16:26:59,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51444 to 51444. [2023-12-02 16:26:59,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51444 states, 32277 states have (on average 1.3055116646528488) internal successors, (42138), 32442 states have internal predecessors, (42138), 16245 states have call successors, (16245), 2928 states have call predecessors, (16245), 2919 states have return successors, (16241), 16098 states have call predecessors, (16241), 16241 states have call successors, (16241) [2023-12-02 16:26:59,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51444 states to 51444 states and 74624 transitions. [2023-12-02 16:26:59,666 INFO L78 Accepts]: Start accepts. Automaton has 51444 states and 74624 transitions. Word has length 468 [2023-12-02 16:26:59,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:26:59,667 INFO L495 AbstractCegarLoop]: Abstraction has 51444 states and 74624 transitions. [2023-12-02 16:26:59,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2023-12-02 16:26:59,667 INFO L276 IsEmpty]: Start isEmpty. Operand 51444 states and 74624 transitions. [2023-12-02 16:26:59,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2023-12-02 16:26:59,679 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:26:59,679 INFO L195 NwaCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 9, 8, 8, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:26:59,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-02 16:26:59,680 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 16:26:59,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:26:59,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1017393334, now seen corresponding path program 1 times [2023-12-02 16:26:59,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:26:59,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583103361] [2023-12-02 16:26:59,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:26:59,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:26:59,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:27:00,471 INFO L134 CoverageAnalysis]: Checked inductivity of 5501 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 5485 trivial. 0 not checked. [2023-12-02 16:27:00,471 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:27:00,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583103361] [2023-12-02 16:27:00,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583103361] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:27:00,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:27:00,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:27:00,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051381680] [2023-12-02 16:27:00,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:27:00,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:27:00,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:27:00,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:27:00,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:27:00,473 INFO L87 Difference]: Start difference. First operand 51444 states and 74624 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2023-12-02 16:27:03,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:27:05,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:27:07,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:27:11,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:27:11,727 INFO L93 Difference]: Finished difference Result 51450 states and 74629 transitions. [2023-12-02 16:27:11,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:27:11,727 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 475 [2023-12-02 16:27:11,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:27:11,898 INFO L225 Difference]: With dead ends: 51450 [2023-12-02 16:27:11,898 INFO L226 Difference]: Without dead ends: 51448 [2023-12-02 16:27:11,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:27:11,921 INFO L413 NwaCegarLoop]: 3054 mSDtfsCounter, 3333 mSDsluCounter, 6089 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3335 SdHoareTripleChecker+Valid, 9143 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:27:11,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3335 Valid, 9143 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1186 Invalid, 3 Unknown, 0 Unchecked, 8.2s Time] [2023-12-02 16:27:11,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51448 states. [2023-12-02 16:27:15,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51448 to 51448. [2023-12-02 16:27:15,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51448 states, 32280 states have (on average 1.3054832713754647) internal successors, (42141), 32445 states have internal predecessors, (42141), 16245 states have call successors, (16245), 2929 states have call predecessors, (16245), 2920 states have return successors, (16241), 16098 states have call predecessors, (16241), 16241 states have call successors, (16241) [2023-12-02 16:27:15,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51448 states to 51448 states and 74627 transitions. [2023-12-02 16:27:15,834 INFO L78 Accepts]: Start accepts. Automaton has 51448 states and 74627 transitions. Word has length 475 [2023-12-02 16:27:15,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:27:15,834 INFO L495 AbstractCegarLoop]: Abstraction has 51448 states and 74627 transitions. [2023-12-02 16:27:15,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2023-12-02 16:27:15,835 INFO L276 IsEmpty]: Start isEmpty. Operand 51448 states and 74627 transitions. [2023-12-02 16:27:15,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2023-12-02 16:27:15,852 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:27:15,852 INFO L195 NwaCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 10, 9, 9, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:27:15,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-02 16:27:15,852 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 16:27:15,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:27:15,853 INFO L85 PathProgramCache]: Analyzing trace with hash -654184412, now seen corresponding path program 1 times [2023-12-02 16:27:15,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:27:15,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252355612] [2023-12-02 16:27:15,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:27:15,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:27:15,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:27:16,630 INFO L134 CoverageAnalysis]: Checked inductivity of 5537 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 5519 trivial. 0 not checked. [2023-12-02 16:27:16,630 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:27:16,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252355612] [2023-12-02 16:27:16,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252355612] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:27:16,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:27:16,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:27:16,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559897790] [2023-12-02 16:27:16,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:27:16,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:27:16,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:27:16,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:27:16,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:27:16,632 INFO L87 Difference]: Start difference. First operand 51448 states and 74627 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2023-12-02 16:27:19,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:27:21,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:27:23,752 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 [] [2023-12-02 16:27:28,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:27:28,324 INFO L93 Difference]: Finished difference Result 51454 states and 74632 transitions. [2023-12-02 16:27:28,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:27:28,325 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 478 [2023-12-02 16:27:28,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:27:28,501 INFO L225 Difference]: With dead ends: 51454 [2023-12-02 16:27:28,501 INFO L226 Difference]: Without dead ends: 51450 [2023-12-02 16:27:28,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:27:28,521 INFO L413 NwaCegarLoop]: 3054 mSDtfsCounter, 3332 mSDsluCounter, 6089 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3333 SdHoareTripleChecker+Valid, 9143 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:27:28,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3333 Valid, 9143 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1186 Invalid, 3 Unknown, 0 Unchecked, 8.3s Time] [2023-12-02 16:27:28,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51450 states. [2023-12-02 16:27:32,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51450 to 51450. [2023-12-02 16:27:32,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51450 states, 32282 states have (on average 1.305433368440617) internal successors, (42142), 32446 states have internal predecessors, (42142), 16245 states have call successors, (16245), 2930 states have call predecessors, (16245), 2920 states have return successors, (16241), 16098 states have call predecessors, (16241), 16241 states have call successors, (16241) [2023-12-02 16:27:32,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51450 states to 51450 states and 74628 transitions. [2023-12-02 16:27:32,991 INFO L78 Accepts]: Start accepts. Automaton has 51450 states and 74628 transitions. Word has length 478 [2023-12-02 16:27:32,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:27:32,991 INFO L495 AbstractCegarLoop]: Abstraction has 51450 states and 74628 transitions. [2023-12-02 16:27:32,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2023-12-02 16:27:32,992 INFO L276 IsEmpty]: Start isEmpty. Operand 51450 states and 74628 transitions. [2023-12-02 16:27:33,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2023-12-02 16:27:33,017 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:27:33,017 INFO L195 NwaCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 11, 10, 10, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:27:33,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-02 16:27:33,017 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 16:27:33,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:27:33,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1262889471, now seen corresponding path program 1 times [2023-12-02 16:27:33,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:27:33,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046607472] [2023-12-02 16:27:33,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:27:33,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:27:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:27:33,668 INFO L134 CoverageAnalysis]: Checked inductivity of 5574 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 5554 trivial. 0 not checked. [2023-12-02 16:27:33,668 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:27:33,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046607472] [2023-12-02 16:27:33,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046607472] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:27:33,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:27:33,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:27:33,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127506967] [2023-12-02 16:27:33,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:27:33,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:27:33,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:27:33,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:27:33,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:27:33,671 INFO L87 Difference]: Start difference. First operand 51450 states and 74628 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2023-12-02 16:27:36,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:27:38,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:27:40,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:27:45,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:27:45,746 INFO L93 Difference]: Finished difference Result 51450 states and 74628 transitions. [2023-12-02 16:27:45,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:27:45,746 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) Word has length 482 [2023-12-02 16:27:45,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:27:45,927 INFO L225 Difference]: With dead ends: 51450 [2023-12-02 16:27:45,927 INFO L226 Difference]: Without dead ends: 51192 [2023-12-02 16:27:45,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:27:45,951 INFO L413 NwaCegarLoop]: 3052 mSDtfsCounter, 3328 mSDsluCounter, 6088 mSDsCounter, 0 mSdLazyCounter, 1181 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3328 SdHoareTripleChecker+Valid, 9140 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1181 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:27:45,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3328 Valid, 9140 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1181 Invalid, 3 Unknown, 0 Unchecked, 8.4s Time] [2023-12-02 16:27:45,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51192 states. [2023-12-02 16:27:50,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51192 to 51192. [2023-12-02 16:27:50,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51192 states, 32209 states have (on average 1.3038902170200874) internal successors, (41997), 32301 states have internal predecessors, (41997), 16087 states have call successors, (16087), 2894 states have call predecessors, (16087), 2894 states have return successors, (16087), 16021 states have call predecessors, (16087), 16087 states have call successors, (16087) [2023-12-02 16:27:50,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51192 states to 51192 states and 74171 transitions. [2023-12-02 16:27:50,627 INFO L78 Accepts]: Start accepts. Automaton has 51192 states and 74171 transitions. Word has length 482 [2023-12-02 16:27:50,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:27:50,628 INFO L495 AbstractCegarLoop]: Abstraction has 51192 states and 74171 transitions. [2023-12-02 16:27:50,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2023-12-02 16:27:50,628 INFO L276 IsEmpty]: Start isEmpty. Operand 51192 states and 74171 transitions. [2023-12-02 16:27:50,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2023-12-02 16:27:50,667 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:27:50,668 INFO L195 NwaCegarLoop]: trace histogram [41, 36, 36, 36, 36, 36, 36, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:27:50,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-02 16:27:50,668 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 16:27:50,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:27:50,668 INFO L85 PathProgramCache]: Analyzing trace with hash -195277178, now seen corresponding path program 1 times [2023-12-02 16:27:50,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:27:50,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131761008] [2023-12-02 16:27:50,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:27:50,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:27:50,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:27:51,016 INFO L134 CoverageAnalysis]: Checked inductivity of 5464 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5457 trivial. 0 not checked. [2023-12-02 16:27:51,016 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:27:51,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131761008] [2023-12-02 16:27:51,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131761008] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:27:51,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:27:51,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:27:51,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43207994] [2023-12-02 16:27:51,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:27:51,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:27:51,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:27:51,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:27:51,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:27:51,019 INFO L87 Difference]: Start difference. First operand 51192 states and 74171 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2023-12-02 16:27:53,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:27:55,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:28:00,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:28:05,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:28:05,400 INFO L93 Difference]: Finished difference Result 124742 states and 180789 transitions. [2023-12-02 16:28:05,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:28:05,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) Word has length 495 [2023-12-02 16:28:05,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:28:05,686 INFO L225 Difference]: With dead ends: 124742 [2023-12-02 16:28:05,686 INFO L226 Difference]: Without dead ends: 75137 [2023-12-02 16:28:05,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:28:05,828 INFO L413 NwaCegarLoop]: 5191 mSDtfsCounter, 3189 mSDsluCounter, 2965 mSDsCounter, 0 mSdLazyCounter, 1079 mSolverCounterSat, 9 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3189 SdHoareTripleChecker+Valid, 8156 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1079 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:28:05,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3189 Valid, 8156 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1079 Invalid, 3 Unknown, 0 Unchecked, 8.5s Time] [2023-12-02 16:28:05,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75137 states. [2023-12-02 16:28:12,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75137 to 75127. [2023-12-02 16:28:12,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75127 states, 47300 states have (on average 1.3036786469344608) internal successors, (61664), 47440 states have internal predecessors, (61664), 23569 states have call successors, (23569), 4256 states have call predecessors, (23569), 4256 states have return successors, (23569), 23467 states have call predecessors, (23569), 23569 states have call successors, (23569) [2023-12-02 16:28:12,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75127 states to 75127 states and 108802 transitions. [2023-12-02 16:28:12,774 INFO L78 Accepts]: Start accepts. Automaton has 75127 states and 108802 transitions. Word has length 495 [2023-12-02 16:28:12,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:28:12,774 INFO L495 AbstractCegarLoop]: Abstraction has 75127 states and 108802 transitions. [2023-12-02 16:28:12,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2023-12-02 16:28:12,775 INFO L276 IsEmpty]: Start isEmpty. Operand 75127 states and 108802 transitions. [2023-12-02 16:28:12,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2023-12-02 16:28:12,804 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:28:12,805 INFO L195 NwaCegarLoop]: trace histogram [41, 36, 36, 36, 36, 36, 36, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:28:12,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-02 16:28:12,805 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 16:28:12,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:28:12,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1496342851, now seen corresponding path program 1 times [2023-12-02 16:28:12,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:28:12,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434956774] [2023-12-02 16:28:12,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:28:12,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:28:12,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:28:13,159 INFO L134 CoverageAnalysis]: Checked inductivity of 5464 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5457 trivial. 0 not checked. [2023-12-02 16:28:13,159 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:28:13,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434956774] [2023-12-02 16:28:13,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434956774] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:28:13,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:28:13,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:28:13,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053094392] [2023-12-02 16:28:13,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:28:13,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:28:13,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:28:13,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:28:13,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:28:13,162 INFO L87 Difference]: Start difference. First operand 75127 states and 108802 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2023-12-02 16:28:16,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:28:18,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:28:21,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:28:30,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:28:30,242 INFO L93 Difference]: Finished difference Result 183602 states and 265969 transitions. [2023-12-02 16:28:30,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:28:30,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) Word has length 496 [2023-12-02 16:28:30,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:28:30,674 INFO L225 Difference]: With dead ends: 183602 [2023-12-02 16:28:30,674 INFO L226 Difference]: Without dead ends: 110062 [2023-12-02 16:28:30,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:28:30,873 INFO L413 NwaCegarLoop]: 5281 mSDtfsCounter, 3188 mSDsluCounter, 2965 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 9 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3188 SdHoareTripleChecker+Valid, 8246 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:28:30,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3188 Valid, 8246 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1082 Invalid, 3 Unknown, 0 Unchecked, 8.5s Time] [2023-12-02 16:28:30,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110062 states. [2023-12-02 16:28:40,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110062 to 110052. [2023-12-02 16:28:40,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110052 states, 69345 states have (on average 1.3033816425120772) internal successors, (90383), 69557 states have internal predecessors, (90383), 34457 states have call successors, (34457), 6248 states have call predecessors, (34457), 6248 states have return successors, (34457), 34301 states have call predecessors, (34457), 34457 states have call successors, (34457) [2023-12-02 16:28:40,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110052 states to 110052 states and 159297 transitions. [2023-12-02 16:28:40,913 INFO L78 Accepts]: Start accepts. Automaton has 110052 states and 159297 transitions. Word has length 496 [2023-12-02 16:28:40,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:28:40,914 INFO L495 AbstractCegarLoop]: Abstraction has 110052 states and 159297 transitions. [2023-12-02 16:28:40,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2023-12-02 16:28:40,914 INFO L276 IsEmpty]: Start isEmpty. Operand 110052 states and 159297 transitions. [2023-12-02 16:28:40,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2023-12-02 16:28:40,941 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:28:40,941 INFO L195 NwaCegarLoop]: trace histogram [41, 36, 36, 36, 36, 36, 36, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:28:40,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-02 16:28:40,941 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 16:28:40,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:28:40,942 INFO L85 PathProgramCache]: Analyzing trace with hash -356499663, now seen corresponding path program 1 times [2023-12-02 16:28:40,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:28:40,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546626644] [2023-12-02 16:28:40,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:28:41,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:28:41,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:28:41,474 INFO L134 CoverageAnalysis]: Checked inductivity of 5464 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5457 trivial. 0 not checked. [2023-12-02 16:28:41,474 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:28:41,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546626644] [2023-12-02 16:28:41,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546626644] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:28:41,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:28:41,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:28:41,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923742353] [2023-12-02 16:28:41,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:28:41,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:28:41,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:28:41,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:28:41,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:28:41,477 INFO L87 Difference]: Start difference. First operand 110052 states and 159297 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2023-12-02 16:28:44,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:28:46,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:28:50,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:29:02,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:29:02,996 INFO L93 Difference]: Finished difference Result 269931 states and 390905 transitions. [2023-12-02 16:29:02,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:29:02,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) Word has length 497 [2023-12-02 16:29:02,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:29:03,676 INFO L225 Difference]: With dead ends: 269931 [2023-12-02 16:29:03,676 INFO L226 Difference]: Without dead ends: 161466 [2023-12-02 16:29:03,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:29:03,976 INFO L413 NwaCegarLoop]: 5388 mSDtfsCounter, 3187 mSDsluCounter, 2965 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 9 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3187 SdHoareTripleChecker+Valid, 8353 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:29:03,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3187 Valid, 8353 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1093 Invalid, 3 Unknown, 0 Unchecked, 9.3s Time] [2023-12-02 16:29:04,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161466 states. [2023-12-02 16:29:18,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161466 to 161456. [2023-12-02 16:29:18,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161456 states, 101836 states have (on average 1.303340665383558) internal successors, (132727), 102156 states have internal predecessors, (132727), 50465 states have call successors, (50465), 9153 states have call predecessors, (50465), 9153 states have return successors, (50465), 50228 states have call predecessors, (50465), 50465 states have call successors, (50465) [2023-12-02 16:29:19,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161456 states to 161456 states and 233657 transitions. [2023-12-02 16:29:19,545 INFO L78 Accepts]: Start accepts. Automaton has 161456 states and 233657 transitions. Word has length 497 [2023-12-02 16:29:19,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:29:19,546 INFO L495 AbstractCegarLoop]: Abstraction has 161456 states and 233657 transitions. [2023-12-02 16:29:19,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2023-12-02 16:29:19,546 INFO L276 IsEmpty]: Start isEmpty. Operand 161456 states and 233657 transitions. [2023-12-02 16:29:19,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2023-12-02 16:29:19,581 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:29:19,582 INFO L195 NwaCegarLoop]: trace histogram [41, 36, 36, 36, 36, 36, 36, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:29:19,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-02 16:29:19,582 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 16:29:19,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:29:19,583 INFO L85 PathProgramCache]: Analyzing trace with hash -21157527, now seen corresponding path program 1 times [2023-12-02 16:29:19,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:29:19,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504871976] [2023-12-02 16:29:19,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:29:19,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:29:19,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:29:20,434 INFO L134 CoverageAnalysis]: Checked inductivity of 5473 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5459 trivial. 0 not checked. [2023-12-02 16:29:20,435 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:29:20,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504871976] [2023-12-02 16:29:20,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504871976] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:29:20,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:29:20,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:29:20,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518186563] [2023-12-02 16:29:20,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:29:20,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:29:20,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:29:20,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:29:20,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:29:20,437 INFO L87 Difference]: Start difference. First operand 161456 states and 233657 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2023-12-02 16:29:23,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:29:26,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:29:28,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:29:46,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:29:46,247 INFO L93 Difference]: Finished difference Result 376231 states and 544470 transitions. [2023-12-02 16:29:46,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:29:46,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) Word has length 509 [2023-12-02 16:29:46,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:29:47,394 INFO L225 Difference]: With dead ends: 376231 [2023-12-02 16:29:47,394 INFO L226 Difference]: Without dead ends: 216362 [2023-12-02 16:29:48,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:29:48,033 INFO L413 NwaCegarLoop]: 2995 mSDtfsCounter, 3361 mSDsluCounter, 2819 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 18 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3361 SdHoareTripleChecker+Valid, 5814 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:29:48,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3361 Valid, 5814 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 785 Invalid, 3 Unknown, 0 Unchecked, 8.3s Time] [2023-12-02 16:29:48,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216362 states. [2023-12-02 16:30:07,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216362 to 216304. [2023-12-02 16:30:07,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216304 states, 136366 states have (on average 1.304210727014065) internal successors, (177850), 136819 states have internal predecessors, (177850), 67590 states have call successors, (67590), 12346 states have call predecessors, (67590), 12346 states have return successors, (67590), 67247 states have call predecessors, (67590), 67590 states have call successors, (67590) [2023-12-02 16:30:08,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216304 states to 216304 states and 313030 transitions. [2023-12-02 16:30:08,955 INFO L78 Accepts]: Start accepts. Automaton has 216304 states and 313030 transitions. Word has length 509 [2023-12-02 16:30:08,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:30:08,956 INFO L495 AbstractCegarLoop]: Abstraction has 216304 states and 313030 transitions. [2023-12-02 16:30:08,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2023-12-02 16:30:08,956 INFO L276 IsEmpty]: Start isEmpty. Operand 216304 states and 313030 transitions. [2023-12-02 16:30:08,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2023-12-02 16:30:08,988 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:30:08,989 INFO L195 NwaCegarLoop]: trace histogram [41, 36, 36, 36, 36, 36, 36, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:30:08,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-02 16:30:08,989 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 16:30:08,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:30:08,990 INFO L85 PathProgramCache]: Analyzing trace with hash -373988024, now seen corresponding path program 1 times [2023-12-02 16:30:08,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:30:08,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685260571] [2023-12-02 16:30:08,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:30:08,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:30:09,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:30:09,670 INFO L134 CoverageAnalysis]: Checked inductivity of 5473 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5459 trivial. 0 not checked. [2023-12-02 16:30:09,670 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:30:09,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685260571] [2023-12-02 16:30:09,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685260571] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:30:09,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:30:09,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:30:09,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281774020] [2023-12-02 16:30:09,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:30:09,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:30:09,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:30:09,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:30:09,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:30:09,673 INFO L87 Difference]: Start difference. First operand 216304 states and 313030 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2023-12-02 16:30:12,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:30:14,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:30:17,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:30:41,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:30:41,887 INFO L93 Difference]: Finished difference Result 482737 states and 698808 transitions. [2023-12-02 16:30:41,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:30:41,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) Word has length 510 [2023-12-02 16:30:41,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:30:43,077 INFO L225 Difference]: With dead ends: 482737 [2023-12-02 16:30:43,077 INFO L226 Difference]: Without dead ends: 268020 [2023-12-02 16:30:43,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:30:43,891 INFO L413 NwaCegarLoop]: 5778 mSDtfsCounter, 3144 mSDsluCounter, 2969 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 9 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3144 SdHoareTripleChecker+Valid, 8747 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:30:43,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3144 Valid, 8747 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1174 Invalid, 3 Unknown, 0 Unchecked, 9.2s Time] [2023-12-02 16:30:44,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268020 states. [2023-12-02 16:31:07,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268020 to 267962. [2023-12-02 16:31:08,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267962 states, 168971 states have (on average 1.3039101384261205) internal successors, (220323), 169557 states have internal predecessors, (220323), 83728 states have call successors, (83728), 15261 states have call predecessors, (83728), 15261 states have return successors, (83728), 83279 states have call predecessors, (83728), 83728 states have call successors, (83728) [2023-12-02 16:31:09,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267962 states to 267962 states and 387779 transitions. [2023-12-02 16:31:09,854 INFO L78 Accepts]: Start accepts. Automaton has 267962 states and 387779 transitions. Word has length 510 [2023-12-02 16:31:09,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:31:09,855 INFO L495 AbstractCegarLoop]: Abstraction has 267962 states and 387779 transitions. [2023-12-02 16:31:09,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2023-12-02 16:31:09,855 INFO L276 IsEmpty]: Start isEmpty. Operand 267962 states and 387779 transitions. [2023-12-02 16:31:09,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2023-12-02 16:31:09,929 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:31:09,929 INFO L195 NwaCegarLoop]: trace histogram [43, 36, 36, 36, 36, 36, 36, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:31:09,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-02 16:31:09,929 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 16:31:09,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:31:09,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1238844789, now seen corresponding path program 1 times [2023-12-02 16:31:09,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:31:09,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648462789] [2023-12-02 16:31:09,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:31:09,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:31:10,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:31:11,409 INFO L134 CoverageAnalysis]: Checked inductivity of 5885 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5885 trivial. 0 not checked. [2023-12-02 16:31:11,409 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:31:11,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648462789] [2023-12-02 16:31:11,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648462789] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:31:11,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:31:11,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:31:11,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598022124] [2023-12-02 16:31:11,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:31:11,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:31:11,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:31:11,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:31:11,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:31:11,412 INFO L87 Difference]: Start difference. First operand 267962 states and 387779 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2023-12-02 16:31:14,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:31:16,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:31:18,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:31:39,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:31:39,179 INFO L93 Difference]: Finished difference Result 267962 states and 387779 transitions. [2023-12-02 16:31:39,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 16:31:39,180 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 585 [2023-12-02 16:31:39,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:31:40,483 INFO L225 Difference]: With dead ends: 267962 [2023-12-02 16:31:40,483 INFO L226 Difference]: Without dead ends: 267960 [2023-12-02 16:31:40,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 16:31:40,586 INFO L413 NwaCegarLoop]: 3004 mSDtfsCounter, 3210 mSDsluCounter, 6052 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3211 SdHoareTripleChecker+Valid, 9056 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2023-12-02 16:31:40,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3211 Valid, 9056 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1182 Invalid, 3 Unknown, 0 Unchecked, 8.7s Time] [2023-12-02 16:31:40,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267960 states. [2023-12-02 16:32:04,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267960 to 267960. [2023-12-02 16:32:04,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267960 states, 168970 states have (on average 1.3032550156832574) internal successors, (220211), 169555 states have internal predecessors, (220211), 83728 states have call successors, (83728), 15261 states have call predecessors, (83728), 15261 states have return successors, (83728), 83279 states have call predecessors, (83728), 83728 states have call successors, (83728) [2023-12-02 16:32:06,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267960 states to 267960 states and 387667 transitions. [2023-12-02 16:32:06,402 INFO L78 Accepts]: Start accepts. Automaton has 267960 states and 387667 transitions. Word has length 585 [2023-12-02 16:32:06,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:32:06,402 INFO L495 AbstractCegarLoop]: Abstraction has 267960 states and 387667 transitions. [2023-12-02 16:32:06,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2023-12-02 16:32:06,403 INFO L276 IsEmpty]: Start isEmpty. Operand 267960 states and 387667 transitions. [2023-12-02 16:32:06,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 600 [2023-12-02 16:32:06,480 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:32:06,480 INFO L195 NwaCegarLoop]: trace histogram [43, 36, 36, 36, 36, 36, 36, 13, 13, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:32:06,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-02 16:32:06,481 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 16:32:06,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:32:06,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1402721967, now seen corresponding path program 1 times [2023-12-02 16:32:06,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:32:06,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555082169] [2023-12-02 16:32:06,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:32:06,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:32:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:32:07,527 INFO L134 CoverageAnalysis]: Checked inductivity of 5921 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5921 trivial. 0 not checked. [2023-12-02 16:32:07,527 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:32:07,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555082169] [2023-12-02 16:32:07,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555082169] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:32:07,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:32:07,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:32:07,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966620951] [2023-12-02 16:32:07,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:32:07,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:32:07,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:32:07,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:32:07,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:32:07,529 INFO L87 Difference]: Start difference. First operand 267960 states and 387667 transitions. Second operand has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (67), 3 states have call predecessors, (67), 1 states have return successors, (63), 1 states have call predecessors, (63), 1 states have call successors, (63) [2023-12-02 16:32:10,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:32:12,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:32:14,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:32:16,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:32:38,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:32:38,564 INFO L93 Difference]: Finished difference Result 267960 states and 387667 transitions. [2023-12-02 16:32:38,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 16:32:38,565 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (67), 3 states have call predecessors, (67), 1 states have return successors, (63), 1 states have call predecessors, (63), 1 states have call successors, (63) Word has length 599 [2023-12-02 16:32:38,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:32:38,567 INFO L225 Difference]: With dead ends: 267960 [2023-12-02 16:32:38,567 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 16:32:39,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 16:32:39,149 INFO L413 NwaCegarLoop]: 3025 mSDtfsCounter, 57 mSDsluCounter, 9021 mSDsCounter, 0 mSdLazyCounter, 1573 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 12046 SdHoareTripleChecker+Invalid, 1577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1573 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2023-12-02 16:32:39,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 12046 Invalid, 1577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1573 Invalid, 4 Unknown, 0 Unchecked, 11.9s Time] [2023-12-02 16:32:39,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 16:32:39,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 16:32:39,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:32:39,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 16:32:39,173 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 599 [2023-12-02 16:32:39,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:32:39,174 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 16:32:39,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (67), 3 states have call predecessors, (67), 1 states have return successors, (63), 1 states have call predecessors, (63), 1 states have call successors, (63) [2023-12-02 16:32:39,174 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 16:32:39,174 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 16:32:39,176 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-12-02 16:32:39,176 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-12-02 16:32:39,176 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-12-02 16:32:39,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-02 16:32:39,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.