./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_f447f2db-aa22-44ec-8f55-1a54cba8bc60/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f447f2db-aa22-44ec-8f55-1a54cba8bc60/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f447f2db-aa22-44ec-8f55-1a54cba8bc60/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f447f2db-aa22-44ec-8f55-1a54cba8bc60/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f447f2db-aa22-44ec-8f55-1a54cba8bc60/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f447f2db-aa22-44ec-8f55-1a54cba8bc60/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --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 e373372610053a8b3f90a6fe69a2e2f77f1b445737e9545423fdaf4f64c3f09c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 01:45:08,093 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:45:08,096 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:45:08,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:45:08,134 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:45:08,135 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:45:08,137 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:45:08,139 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:45:08,142 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:45:08,143 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:45:08,144 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:45:08,146 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:45:08,147 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:45:08,148 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:45:08,150 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:45:08,152 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:45:08,153 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:45:08,154 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:45:08,156 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:45:08,159 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:45:08,161 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:45:08,163 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:45:08,165 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:45:08,166 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:45:08,171 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:45:08,171 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:45:08,172 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:45:08,173 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:45:08,174 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:45:08,175 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:45:08,176 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:45:08,177 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:45:08,178 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:45:08,179 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:45:08,181 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:45:08,181 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:45:08,182 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:45:08,183 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:45:08,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:45:08,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:45:08,186 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:45:08,187 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f447f2db-aa22-44ec-8f55-1a54cba8bc60/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 01:45:08,215 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:45:08,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:45:08,216 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:45:08,216 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:45:08,217 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:45:08,218 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:45:08,218 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:45:08,218 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:45:08,219 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:45:08,219 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:45:08,219 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:45:08,220 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:45:08,220 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:45:08,220 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:45:08,221 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:45:08,221 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:45:08,221 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:45:08,222 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:45:08,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:45:08,223 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:45:08,223 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:45:08,223 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:45:08,224 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:45:08,224 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:45:08,224 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:45:08,224 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:45:08,225 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:45:08,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:45:08,225 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:45:08,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:45:08,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:45:08,226 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:45:08,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:45:08,227 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:45:08,227 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:45:08,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:45:08,227 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:45:08,227 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:45:08,228 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_f447f2db-aa22-44ec-8f55-1a54cba8bc60/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f447f2db-aa22-44ec-8f55-1a54cba8bc60/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e373372610053a8b3f90a6fe69a2e2f77f1b445737e9545423fdaf4f64c3f09c [2022-11-03 01:45:08,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:45:08,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:45:08,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:45:08,668 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:45:08,670 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:45:08,672 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f447f2db-aa22-44ec-8f55-1a54cba8bc60/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i [2022-11-03 01:45:08,778 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f447f2db-aa22-44ec-8f55-1a54cba8bc60/bin/utaipan-7li7fVZpFI/data/50a87815f/63f537acb94a4fc0b10262658ee0084e/FLAG96d26404a [2022-11-03 01:45:10,016 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:45:10,021 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f447f2db-aa22-44ec-8f55-1a54cba8bc60/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i [2022-11-03 01:45:10,093 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f447f2db-aa22-44ec-8f55-1a54cba8bc60/bin/utaipan-7li7fVZpFI/data/50a87815f/63f537acb94a4fc0b10262658ee0084e/FLAG96d26404a [2022-11-03 01:45:10,254 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f447f2db-aa22-44ec-8f55-1a54cba8bc60/bin/utaipan-7li7fVZpFI/data/50a87815f/63f537acb94a4fc0b10262658ee0084e [2022-11-03 01:45:10,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:45:10,263 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:45:10,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:45:10,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:45:10,270 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:45:10,272 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:45:10" (1/1) ... [2022-11-03 01:45:10,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70417bf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:10, skipping insertion in model container [2022-11-03 01:45:10,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:45:10" (1/1) ... [2022-11-03 01:45:10,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:45:10,539 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:45:14,020 WARN L230 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_f447f2db-aa22-44ec-8f55-1a54cba8bc60/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[330704,330717] [2022-11-03 01:45:14,025 WARN L230 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_f447f2db-aa22-44ec-8f55-1a54cba8bc60/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[330873,330886] [2022-11-03 01:45:14,026 WARN L230 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_f447f2db-aa22-44ec-8f55-1a54cba8bc60/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[331040,331053] [2022-11-03 01:45:14,026 WARN L230 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_f447f2db-aa22-44ec-8f55-1a54cba8bc60/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[331208,331221] [2022-11-03 01:45:14,077 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:45:14,134 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:45:14,697 WARN L230 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_f447f2db-aa22-44ec-8f55-1a54cba8bc60/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[330704,330717] [2022-11-03 01:45:14,698 WARN L230 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_f447f2db-aa22-44ec-8f55-1a54cba8bc60/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[330873,330886] [2022-11-03 01:45:14,699 WARN L230 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_f447f2db-aa22-44ec-8f55-1a54cba8bc60/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[331040,331053] [2022-11-03 01:45:14,699 WARN L230 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_f447f2db-aa22-44ec-8f55-1a54cba8bc60/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[331208,331221] [2022-11-03 01:45:14,712 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:45:14,981 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:45:14,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:14 WrapperNode [2022-11-03 01:45:14,983 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:45:14,984 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:45:14,985 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:45:14,985 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:45:14,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:14" (1/1) ... [2022-11-03 01:45:15,124 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:14" (1/1) ... [2022-11-03 01:45:15,455 INFO L138 Inliner]: procedures = 423, calls = 1852, calls flagged for inlining = 204, calls inlined = 187, statements flattened = 4797 [2022-11-03 01:45:15,455 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:45:15,456 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:45:15,456 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:45:15,456 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:45:15,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:14" (1/1) ... [2022-11-03 01:45:15,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:14" (1/1) ... [2022-11-03 01:45:15,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:14" (1/1) ... [2022-11-03 01:45:15,512 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:14" (1/1) ... [2022-11-03 01:45:15,673 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:14" (1/1) ... [2022-11-03 01:45:15,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:14" (1/1) ... [2022-11-03 01:45:15,717 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:14" (1/1) ... [2022-11-03 01:45:15,734 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:14" (1/1) ... [2022-11-03 01:45:15,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:45:15,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:45:15,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:45:15,792 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:45:15,793 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:14" (1/1) ... [2022-11-03 01:45:15,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:45:15,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f447f2db-aa22-44ec-8f55-1a54cba8bc60/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:45:15,838 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f447f2db-aa22-44ec-8f55-1a54cba8bc60/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:45:15,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f447f2db-aa22-44ec-8f55-1a54cba8bc60/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:45:15,894 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-03 01:45:15,894 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-03 01:45:15,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 01:45:15,895 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 01:45:15,895 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 01:45:15,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 01:45:15,895 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 01:45:15,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 01:45:15,896 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-03 01:45:15,896 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-03 01:45:15,896 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2022-11-03 01:45:15,896 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2022-11-03 01:45:15,896 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2022-11-03 01:45:15,897 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2022-11-03 01:45:15,897 INFO L130 BoogieDeclarations]: Found specification of procedure desc_to_dma [2022-11-03 01:45:15,897 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_to_dma [2022-11-03 01:45:15,897 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-03 01:45:15,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-03 01:45:15,898 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2022-11-03 01:45:15,898 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2022-11-03 01:45:15,898 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 01:45:15,898 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 01:45:15,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 01:45:15,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 01:45:15,899 INFO L130 BoogieDeclarations]: Found specification of procedure mii_write [2022-11-03 01:45:15,899 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_write [2022-11-03 01:45:15,900 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-03 01:45:15,900 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-03 01:45:15,900 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-03 01:45:15,900 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-03 01:45:15,901 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-03 01:45:15,901 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-03 01:45:15,901 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 01:45:15,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 01:45:15,902 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 01:45:15,902 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 01:45:15,902 INFO L130 BoogieDeclarations]: Found specification of procedure set_multicast [2022-11-03 01:45:15,902 INFO L138 BoogieDeclarations]: Found implementation of procedure set_multicast [2022-11-03 01:45:15,902 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-03 01:45:15,903 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-03 01:45:15,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:45:15,904 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-11-03 01:45:15,904 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-11-03 01:45:15,906 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 01:45:15,906 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 01:45:15,906 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-03 01:45:15,907 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-03 01:45:15,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 01:45:15,908 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 01:45:15,908 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 01:45:15,909 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 01:45:15,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 01:45:15,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 01:45:15,910 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 01:45:15,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 01:45:15,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 01:45:15,911 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-03 01:45:15,911 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-03 01:45:15,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 01:45:15,911 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 01:45:15,911 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-03 01:45:15,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-03 01:45:15,912 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-03 01:45:15,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-03 01:45:15,912 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-03 01:45:15,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-03 01:45:15,913 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-03 01:45:15,914 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-03 01:45:15,914 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-03 01:45:15,914 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-03 01:45:15,914 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 01:45:15,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 01:45:15,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 01:45:15,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-03 01:45:15,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-03 01:45:15,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-03 01:45:15,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-03 01:45:15,916 INFO L130 BoogieDeclarations]: Found specification of procedure rio_close [2022-11-03 01:45:15,917 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_close [2022-11-03 01:45:15,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:45:15,917 INFO L130 BoogieDeclarations]: Found specification of procedure mii_getbit [2022-11-03 01:45:15,917 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_getbit [2022-11-03 01:45:15,918 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 01:45:15,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 01:45:15,919 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 01:45:15,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 01:45:15,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 01:45:15,920 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2022-11-03 01:45:15,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2022-11-03 01:45:15,921 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 01:45:15,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 01:45:15,921 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-03 01:45:15,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-03 01:45:15,921 INFO L130 BoogieDeclarations]: Found specification of procedure mii_read [2022-11-03 01:45:15,922 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_read [2022-11-03 01:45:15,922 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2022-11-03 01:45:15,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2022-11-03 01:45:15,923 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-03 01:45:15,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-03 01:45:15,923 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-03 01:45:15,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-03 01:45:15,923 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 01:45:15,924 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 01:45:15,925 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-03 01:45:15,926 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-03 01:45:15,929 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-03 01:45:15,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-03 01:45:15,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:45:15,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:45:15,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 01:45:15,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 01:45:15,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 01:45:15,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 01:45:15,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 01:45:15,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 01:45:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-03 01:45:15,939 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-03 01:45:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure get_stats [2022-11-03 01:45:15,939 INFO L138 BoogieDeclarations]: Found implementation of procedure get_stats [2022-11-03 01:45:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-03 01:45:15,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-03 01:45:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-03 01:45:15,940 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-03 01:45:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2022-11-03 01:45:15,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2022-11-03 01:45:15,941 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 01:45:15,941 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 01:45:15,941 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb_ip_align [2022-11-03 01:45:15,941 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb_ip_align [2022-11-03 01:45:15,941 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-03 01:45:15,941 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-03 01:45:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-03 01:45:15,942 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-03 01:45:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 01:45:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_tx_lock_of_netdev_private [2022-11-03 01:45:15,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_tx_lock_of_netdev_private [2022-11-03 01:45:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure rio_open [2022-11-03 01:45:15,943 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_open [2022-11-03 01:45:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 01:45:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-03 01:45:15,943 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-03 01:45:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_tx_lock_of_netdev_private [2022-11-03 01:45:15,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_tx_lock_of_netdev_private [2022-11-03 01:45:15,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 01:45:15,944 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-03 01:45:15,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-03 01:45:15,944 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 01:45:15,945 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 01:45:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 01:45:15,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 01:45:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_rx_lock_of_netdev_private [2022-11-03 01:45:15,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_rx_lock_of_netdev_private [2022-11-03 01:45:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-03 01:45:15,946 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-03 01:45:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 01:45:15,946 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 01:45:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure rio_free_tx [2022-11-03 01:45:15,946 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_free_tx [2022-11-03 01:45:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure rio_tx_timeout [2022-11-03 01:45:15,947 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_tx_timeout [2022-11-03 01:45:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_rx_lock_of_netdev_private [2022-11-03 01:45:15,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_rx_lock_of_netdev_private [2022-11-03 01:45:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure rio_remove1 [2022-11-03 01:45:15,948 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_remove1 [2022-11-03 01:45:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 01:45:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 01:45:15,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 01:45:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_rio_driver_exit_14_2 [2022-11-03 01:45:15,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_rio_driver_exit_14_2 [2022-11-03 01:45:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure mii_send_bits [2022-11-03 01:45:15,949 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_send_bits [2022-11-03 01:45:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 01:45:15,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 01:45:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure mii_set_media [2022-11-03 01:45:15,951 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_set_media [2022-11-03 01:45:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-03 01:45:15,951 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-03 01:45:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-03 01:45:15,953 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-03 01:45:15,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:45:15,954 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 01:45:15,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 01:45:17,001 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:45:17,005 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:45:17,194 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 01:45:21,428 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-03 01:45:21,588 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:45:23,822 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:45:23,822 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-03 01:45:23,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:45:23 BoogieIcfgContainer [2022-11-03 01:45:23,829 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:45:23,833 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:45:23,833 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:45:23,837 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:45:23,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:45:10" (1/3) ... [2022-11-03 01:45:23,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a7cc5ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:45:23, skipping insertion in model container [2022-11-03 01:45:23,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:14" (2/3) ... [2022-11-03 01:45:23,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a7cc5ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:45:23, skipping insertion in model container [2022-11-03 01:45:23,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:45:23" (3/3) ... [2022-11-03 01:45:23,841 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i [2022-11-03 01:45:23,865 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:45:23,866 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-03 01:45:24,004 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:45:24,014 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=LoopsAndPotentialCycles, 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;@597fe50, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:45:24,014 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-03 01:45:24,027 INFO L276 IsEmpty]: Start isEmpty. Operand has 1340 states, 778 states have (on average 1.2776349614395888) internal successors, (994), 811 states have internal predecessors, (994), 482 states have call successors, (482), 83 states have call predecessors, (482), 82 states have return successors, (476), 473 states have call predecessors, (476), 476 states have call successors, (476) [2022-11-03 01:45:24,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-03 01:45:24,062 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:24,063 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:24,064 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)] === [2022-11-03 01:45:24,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:24,073 INFO L85 PathProgramCache]: Analyzing trace with hash -899849820, now seen corresponding path program 1 times [2022-11-03 01:45:24,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:24,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803063119] [2022-11-03 01:45:24,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:24,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:24,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:24,922 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-11-03 01:45:24,923 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:24,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803063119] [2022-11-03 01:45:24,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803063119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:24,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:24,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:45:24,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362547602] [2022-11-03 01:45:24,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:24,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:45:24,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:24,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:45:24,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:24,995 INFO L87 Difference]: Start difference. First operand has 1340 states, 778 states have (on average 1.2776349614395888) internal successors, (994), 811 states have internal predecessors, (994), 482 states have call successors, (482), 83 states have call predecessors, (482), 82 states have return successors, (476), 473 states have call predecessors, (476), 476 states have call successors, (476) Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-03 01:45:28,353 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 [] [2022-11-03 01:45:31,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:45:31,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:31,806 INFO L93 Difference]: Finished difference Result 3747 states and 5498 transitions. [2022-11-03 01:45:31,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:45:31,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 111 [2022-11-03 01:45:31,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:31,847 INFO L225 Difference]: With dead ends: 3747 [2022-11-03 01:45:31,847 INFO L226 Difference]: Without dead ends: 2416 [2022-11-03 01:45:31,866 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 [2022-11-03 01:45:31,874 INFO L413 NwaCegarLoop]: 2051 mSDtfsCounter, 1601 mSDsluCounter, 1870 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1601 SdHoareTripleChecker+Valid, 3678 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:31,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1601 Valid, 3678 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 525 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2022-11-03 01:45:31,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2416 states. [2022-11-03 01:45:32,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2416 to 2401. [2022-11-03 01:45:32,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2401 states, 1392 states have (on average 1.2658045977011494) internal successors, (1762), 1445 states have internal predecessors, (1762), 851 states have call successors, (851), 156 states have call predecessors, (851), 155 states have return successors, (847), 842 states have call predecessors, (847), 847 states have call successors, (847) [2022-11-03 01:45:32,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2401 states to 2401 states and 3460 transitions. [2022-11-03 01:45:32,369 INFO L78 Accepts]: Start accepts. Automaton has 2401 states and 3460 transitions. Word has length 111 [2022-11-03 01:45:32,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:32,371 INFO L495 AbstractCegarLoop]: Abstraction has 2401 states and 3460 transitions. [2022-11-03 01:45:32,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-03 01:45:32,372 INFO L276 IsEmpty]: Start isEmpty. Operand 2401 states and 3460 transitions. [2022-11-03 01:45:32,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 01:45:32,382 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:32,382 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:32,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:45:32,383 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)] === [2022-11-03 01:45:32,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:32,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1818111408, now seen corresponding path program 1 times [2022-11-03 01:45:32,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:32,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607036225] [2022-11-03 01:45:32,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:32,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:32,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:32,916 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-11-03 01:45:32,916 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:32,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607036225] [2022-11-03 01:45:32,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607036225] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:32,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:32,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:45:32,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299938898] [2022-11-03 01:45:32,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:32,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:45:32,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:32,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:45:32,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:32,921 INFO L87 Difference]: Start difference. First operand 2401 states and 3460 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-03 01:45:36,859 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 [] [2022-11-03 01:45:38,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:38,586 INFO L93 Difference]: Finished difference Result 6901 states and 9931 transitions. [2022-11-03 01:45:38,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:45:38,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 115 [2022-11-03 01:45:38,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:38,630 INFO L225 Difference]: With dead ends: 6901 [2022-11-03 01:45:38,630 INFO L226 Difference]: Without dead ends: 4519 [2022-11-03 01:45:38,649 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 [2022-11-03 01:45:38,650 INFO L413 NwaCegarLoop]: 2073 mSDtfsCounter, 1623 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1623 SdHoareTripleChecker+Valid, 3666 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:38,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1623 Valid, 3666 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 511 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2022-11-03 01:45:38,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4519 states. [2022-11-03 01:45:39,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4519 to 4478. [2022-11-03 01:45:39,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4478 states, 2600 states have (on average 1.265) internal successors, (3289), 2701 states have internal predecessors, (3289), 1575 states have call successors, (1575), 303 states have call predecessors, (1575), 300 states have return successors, (1581), 1551 states have call predecessors, (1581), 1571 states have call successors, (1581) [2022-11-03 01:45:39,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4478 states to 4478 states and 6445 transitions. [2022-11-03 01:45:39,081 INFO L78 Accepts]: Start accepts. Automaton has 4478 states and 6445 transitions. Word has length 115 [2022-11-03 01:45:39,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:39,083 INFO L495 AbstractCegarLoop]: Abstraction has 4478 states and 6445 transitions. [2022-11-03 01:45:39,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-03 01:45:39,083 INFO L276 IsEmpty]: Start isEmpty. Operand 4478 states and 6445 transitions. [2022-11-03 01:45:39,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-03 01:45:39,096 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:39,096 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 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] [2022-11-03 01:45:39,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:45:39,097 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)] === [2022-11-03 01:45:39,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:39,109 INFO L85 PathProgramCache]: Analyzing trace with hash 112315929, now seen corresponding path program 1 times [2022-11-03 01:45:39,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:39,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585833813] [2022-11-03 01:45:39,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:39,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:39,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:40,000 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2022-11-03 01:45:40,000 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:40,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585833813] [2022-11-03 01:45:40,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585833813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:40,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:40,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:45:40,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751701348] [2022-11-03 01:45:40,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:40,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:45:40,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:40,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:45:40,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:45:40,003 INFO L87 Difference]: Start difference. First operand 4478 states and 6445 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-03 01:45:49,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:45:54,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:45:56,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:56,786 INFO L93 Difference]: Finished difference Result 11681 states and 16736 transitions. [2022-11-03 01:45:56,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:45:56,787 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 129 [2022-11-03 01:45:56,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:56,856 INFO L225 Difference]: With dead ends: 11681 [2022-11-03 01:45:56,856 INFO L226 Difference]: Without dead ends: 7222 [2022-11-03 01:45:56,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:45:56,887 INFO L413 NwaCegarLoop]: 2341 mSDtfsCounter, 3678 mSDsluCounter, 4731 mSDsCounter, 0 mSdLazyCounter, 2642 mSolverCounterSat, 555 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3807 SdHoareTripleChecker+Valid, 6284 SdHoareTripleChecker+Invalid, 3199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 555 IncrementalHoareTripleChecker+Valid, 2642 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:56,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3807 Valid, 6284 Invalid, 3199 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [555 Valid, 2642 Invalid, 2 Unknown, 0 Unchecked, 15.9s Time] [2022-11-03 01:45:56,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7222 states. [2022-11-03 01:45:57,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7222 to 7161. [2022-11-03 01:45:57,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7161 states, 4203 states have (on average 1.264572924101832) internal successors, (5315), 4365 states have internal predecessors, (5315), 2430 states have call successors, (2430), 532 states have call predecessors, (2430), 525 states have return successors, (2431), 2388 states have call predecessors, (2431), 2426 states have call successors, (2431) [2022-11-03 01:45:57,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7161 states to 7161 states and 10176 transitions. [2022-11-03 01:45:57,493 INFO L78 Accepts]: Start accepts. Automaton has 7161 states and 10176 transitions. Word has length 129 [2022-11-03 01:45:57,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:57,494 INFO L495 AbstractCegarLoop]: Abstraction has 7161 states and 10176 transitions. [2022-11-03 01:45:57,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-03 01:45:57,495 INFO L276 IsEmpty]: Start isEmpty. Operand 7161 states and 10176 transitions. [2022-11-03 01:45:57,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-03 01:45:57,500 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:57,500 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 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] [2022-11-03 01:45:57,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 01:45:57,501 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)] === [2022-11-03 01:45:57,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:57,502 INFO L85 PathProgramCache]: Analyzing trace with hash -545374415, now seen corresponding path program 1 times [2022-11-03 01:45:57,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:57,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338599600] [2022-11-03 01:45:57,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:57,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:57,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:57,908 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2022-11-03 01:45:57,909 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:57,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338599600] [2022-11-03 01:45:57,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338599600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:57,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:57,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:45:57,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418983564] [2022-11-03 01:45:57,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:57,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:45:57,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:57,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:45:57,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:57,914 INFO L87 Difference]: Start difference. First operand 7161 states and 10176 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-03 01:46:02,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:46:04,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:46:04,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:04,909 INFO L93 Difference]: Finished difference Result 17918 states and 25333 transitions. [2022-11-03 01:46:04,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:46:04,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 131 [2022-11-03 01:46:04,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:04,996 INFO L225 Difference]: With dead ends: 17918 [2022-11-03 01:46:04,996 INFO L226 Difference]: Without dead ends: 10776 [2022-11-03 01:46:05,033 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 [2022-11-03 01:46:05,038 INFO L413 NwaCegarLoop]: 2112 mSDtfsCounter, 1368 mSDsluCounter, 1830 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1368 SdHoareTripleChecker+Valid, 3702 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:05,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1368 Valid, 3702 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 516 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2022-11-03 01:46:05,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10776 states. [2022-11-03 01:46:05,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10776 to 10733. [2022-11-03 01:46:05,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10733 states, 6254 states have (on average 1.2583946274384394) internal successors, (7870), 6499 states have internal predecessors, (7870), 3610 states have call successors, (3610), 881 states have call predecessors, (3610), 866 states have return successors, (3627), 3523 states have call predecessors, (3627), 3606 states have call successors, (3627) [2022-11-03 01:46:05,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10733 states to 10733 states and 15107 transitions. [2022-11-03 01:46:05,832 INFO L78 Accepts]: Start accepts. Automaton has 10733 states and 15107 transitions. Word has length 131 [2022-11-03 01:46:05,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:05,832 INFO L495 AbstractCegarLoop]: Abstraction has 10733 states and 15107 transitions. [2022-11-03 01:46:05,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-03 01:46:05,833 INFO L276 IsEmpty]: Start isEmpty. Operand 10733 states and 15107 transitions. [2022-11-03 01:46:05,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-03 01:46:05,836 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:05,836 INFO L195 NwaCegarLoop]: trace histogram [11, 9, 9, 9, 9, 9, 9, 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] [2022-11-03 01:46:05,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 01:46:05,837 INFO L420 AbstractCegarLoop]: === Iteration 5 === 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)] === [2022-11-03 01:46:05,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:05,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1238756010, now seen corresponding path program 1 times [2022-11-03 01:46:05,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:46:05,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990454678] [2022-11-03 01:46:05,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:05,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:46:05,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:06,090 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2022-11-03 01:46:06,091 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:46:06,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990454678] [2022-11-03 01:46:06,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990454678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:06,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:06,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:46:06,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423812821] [2022-11-03 01:46:06,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:06,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:46:06,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:46:06,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:46:06,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:46:06,095 INFO L87 Difference]: Start difference. First operand 10733 states and 15107 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-03 01:46:10,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:46:12,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:46:13,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:13,578 INFO L93 Difference]: Finished difference Result 30245 states and 42616 transitions. [2022-11-03 01:46:13,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:46:13,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 133 [2022-11-03 01:46:13,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:13,735 INFO L225 Difference]: With dead ends: 30245 [2022-11-03 01:46:13,735 INFO L226 Difference]: Without dead ends: 19531 [2022-11-03 01:46:13,797 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 [2022-11-03 01:46:13,800 INFO L413 NwaCegarLoop]: 2120 mSDtfsCounter, 1651 mSDsluCounter, 1887 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1651 SdHoareTripleChecker+Valid, 3761 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:13,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1651 Valid, 3761 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 520 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2022-11-03 01:46:13,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19531 states. [2022-11-03 01:46:15,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19531 to 19470. [2022-11-03 01:46:15,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19470 states, 11333 states have (on average 1.2592429189093797) internal successors, (14271), 11802 states have internal predecessors, (14271), 6565 states have call successors, (6565), 1598 states have call predecessors, (6565), 1569 states have return successors, (6603), 6378 states have call predecessors, (6603), 6561 states have call successors, (6603) [2022-11-03 01:46:15,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19470 states to 19470 states and 27439 transitions. [2022-11-03 01:46:15,506 INFO L78 Accepts]: Start accepts. Automaton has 19470 states and 27439 transitions. Word has length 133 [2022-11-03 01:46:15,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:15,508 INFO L495 AbstractCegarLoop]: Abstraction has 19470 states and 27439 transitions. [2022-11-03 01:46:15,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-03 01:46:15,509 INFO L276 IsEmpty]: Start isEmpty. Operand 19470 states and 27439 transitions. [2022-11-03 01:46:15,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-03 01:46:15,513 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:15,513 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 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] [2022-11-03 01:46:15,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 01:46:15,513 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)] === [2022-11-03 01:46:15,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:15,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1117849443, now seen corresponding path program 1 times [2022-11-03 01:46:15,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:46:15,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260182471] [2022-11-03 01:46:15,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:15,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:46:15,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:15,761 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2022-11-03 01:46:15,761 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:46:15,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260182471] [2022-11-03 01:46:15,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260182471] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:15,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:15,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:46:15,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241832407] [2022-11-03 01:46:15,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:15,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:46:15,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:46:15,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:46:15,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:46:15,764 INFO L87 Difference]: Start difference. First operand 19470 states and 27439 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-03 01:46:19,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:46:22,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:46:23,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:46:23,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:23,922 INFO L93 Difference]: Finished difference Result 50536 states and 70933 transitions. [2022-11-03 01:46:23,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:46:23,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 134 [2022-11-03 01:46:23,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:24,116 INFO L225 Difference]: With dead ends: 50536 [2022-11-03 01:46:24,116 INFO L226 Difference]: Without dead ends: 31085 [2022-11-03 01:46:24,204 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 [2022-11-03 01:46:24,206 INFO L413 NwaCegarLoop]: 2003 mSDtfsCounter, 1397 mSDsluCounter, 1829 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1397 SdHoareTripleChecker+Valid, 3604 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:24,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1397 Valid, 3604 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 537 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2022-11-03 01:46:24,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31085 states. [2022-11-03 01:46:26,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31085 to 31044. [2022-11-03 01:46:26,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31044 states, 18056 states have (on average 1.2476185201595038) internal successors, (22527), 18817 states have internal predecessors, (22527), 10366 states have call successors, (10366), 2676 states have call predecessors, (10366), 2619 states have return successors, (10452), 9991 states have call predecessors, (10452), 10362 states have call successors, (10452) [2022-11-03 01:46:26,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31044 states to 31044 states and 43345 transitions. [2022-11-03 01:46:26,737 INFO L78 Accepts]: Start accepts. Automaton has 31044 states and 43345 transitions. Word has length 134 [2022-11-03 01:46:26,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:26,738 INFO L495 AbstractCegarLoop]: Abstraction has 31044 states and 43345 transitions. [2022-11-03 01:46:26,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-03 01:46:26,738 INFO L276 IsEmpty]: Start isEmpty. Operand 31044 states and 43345 transitions. [2022-11-03 01:46:26,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-03 01:46:26,741 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:26,741 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:26,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 01:46:26,742 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)] === [2022-11-03 01:46:26,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:26,743 INFO L85 PathProgramCache]: Analyzing trace with hash -816720849, now seen corresponding path program 1 times [2022-11-03 01:46:26,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:46:26,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021522902] [2022-11-03 01:46:26,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:26,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:46:26,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:27,334 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-11-03 01:46:27,334 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:46:27,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021522902] [2022-11-03 01:46:27,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021522902] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:27,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:27,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:46:27,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949879662] [2022-11-03 01:46:27,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:27,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:46:27,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:46:27,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:46:27,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:46:27,336 INFO L87 Difference]: Start difference. First operand 31044 states and 43345 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 01:46:31,828 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 [] [2022-11-03 01:46:36,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:46:37,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:46:38,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:46:39,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:39,924 INFO L93 Difference]: Finished difference Result 43245 states and 60085 transitions. [2022-11-03 01:46:39,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:46:39,925 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 153 [2022-11-03 01:46:39,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:40,136 INFO L225 Difference]: With dead ends: 43245 [2022-11-03 01:46:40,137 INFO L226 Difference]: Without dead ends: 43243 [2022-11-03 01:46:40,157 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 [2022-11-03 01:46:40,158 INFO L413 NwaCegarLoop]: 1997 mSDtfsCounter, 1385 mSDsluCounter, 6358 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1397 SdHoareTripleChecker+Valid, 7594 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:40,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1397 Valid, 7594 Invalid, 1040 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1037 Invalid, 1 Unknown, 0 Unchecked, 10.6s Time] [2022-11-03 01:46:40,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43243 states. [2022-11-03 01:46:42,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43243 to 43226. [2022-11-03 01:46:42,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43226 states, 25102 states have (on average 1.2419329137120547) internal successors, (31175), 26167 states have internal predecessors, (31175), 14384 states have call successors, (14384), 3823 states have call predecessors, (14384), 3737 states have return successors, (14508), 13824 states have call predecessors, (14508), 14376 states have call successors, (14508) [2022-11-03 01:46:42,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43226 states to 43226 states and 60067 transitions. [2022-11-03 01:46:42,934 INFO L78 Accepts]: Start accepts. Automaton has 43226 states and 60067 transitions. Word has length 153 [2022-11-03 01:46:42,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:42,935 INFO L495 AbstractCegarLoop]: Abstraction has 43226 states and 60067 transitions. [2022-11-03 01:46:42,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 01:46:42,935 INFO L276 IsEmpty]: Start isEmpty. Operand 43226 states and 60067 transitions. [2022-11-03 01:46:42,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-03 01:46:42,938 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:42,938 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 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] [2022-11-03 01:46:42,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 01:46:42,939 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)] === [2022-11-03 01:46:42,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:42,939 INFO L85 PathProgramCache]: Analyzing trace with hash 458422132, now seen corresponding path program 1 times [2022-11-03 01:46:42,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:46:42,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731665554] [2022-11-03 01:46:42,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:42,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:46:43,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:43,394 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 407 trivial. 0 not checked. [2022-11-03 01:46:43,394 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:46:43,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731665554] [2022-11-03 01:46:43,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731665554] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:43,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:43,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:46:43,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030317906] [2022-11-03 01:46:43,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:43,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:46:43,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:46:43,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:46:43,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:46:43,398 INFO L87 Difference]: Start difference. First operand 43226 states and 60067 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 01:46:47,727 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 [] [2022-11-03 01:46:52,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:46:53,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:46:54,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:46:55,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:55,172 INFO L93 Difference]: Finished difference Result 43249 states and 60088 transitions. [2022-11-03 01:46:55,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:46:55,173 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 162 [2022-11-03 01:46:55,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:55,368 INFO L225 Difference]: With dead ends: 43249 [2022-11-03 01:46:55,369 INFO L226 Difference]: Without dead ends: 43247 [2022-11-03 01:46:55,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:46:55,388 INFO L413 NwaCegarLoop]: 2000 mSDtfsCounter, 1379 mSDsluCounter, 6358 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1390 SdHoareTripleChecker+Valid, 7597 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:55,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1390 Valid, 7597 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1037 Invalid, 1 Unknown, 0 Unchecked, 9.8s Time] [2022-11-03 01:46:55,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43247 states. [2022-11-03 01:46:58,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43247 to 43230. [2022-11-03 01:46:58,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43230 states, 25105 states have (on average 1.2419040031866162) internal successors, (31178), 26170 states have internal predecessors, (31178), 14384 states have call successors, (14384), 3824 states have call predecessors, (14384), 3738 states have return successors, (14508), 13824 states have call predecessors, (14508), 14376 states have call successors, (14508) [2022-11-03 01:46:58,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43230 states to 43230 states and 60070 transitions. [2022-11-03 01:46:58,461 INFO L78 Accepts]: Start accepts. Automaton has 43230 states and 60070 transitions. Word has length 162 [2022-11-03 01:46:58,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:58,462 INFO L495 AbstractCegarLoop]: Abstraction has 43230 states and 60070 transitions. [2022-11-03 01:46:58,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 01:46:58,462 INFO L276 IsEmpty]: Start isEmpty. Operand 43230 states and 60070 transitions. [2022-11-03 01:46:58,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-03 01:46:58,466 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:58,466 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 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] [2022-11-03 01:46:58,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 01:46:58,467 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)] === [2022-11-03 01:46:58,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:58,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1105127875, now seen corresponding path program 1 times [2022-11-03 01:46:58,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:46:58,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885979670] [2022-11-03 01:46:58,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:58,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:46:58,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:59,026 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2022-11-03 01:46:59,027 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:46:59,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885979670] [2022-11-03 01:46:59,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885979670] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:46:59,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:46:59,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:46:59,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842094433] [2022-11-03 01:46:59,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:46:59,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:46:59,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:46:59,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:46:59,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:46:59,029 INFO L87 Difference]: Start difference. First operand 43230 states and 60070 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 01:47:03,943 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 [] [2022-11-03 01:47:08,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:47:10,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:10,484 INFO L93 Difference]: Finished difference Result 43253 states and 60091 transitions. [2022-11-03 01:47:10,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:47:10,485 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 166 [2022-11-03 01:47:10,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:10,736 INFO L225 Difference]: With dead ends: 43253 [2022-11-03 01:47:10,736 INFO L226 Difference]: Without dead ends: 43251 [2022-11-03 01:47:10,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:47:10,763 INFO L413 NwaCegarLoop]: 2000 mSDtfsCounter, 1379 mSDsluCounter, 6358 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1389 SdHoareTripleChecker+Valid, 7597 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:10,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1389 Valid, 7597 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1037 Invalid, 1 Unknown, 0 Unchecked, 9.1s Time] [2022-11-03 01:47:10,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43251 states. [2022-11-03 01:47:13,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43251 to 43234. [2022-11-03 01:47:13,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43234 states, 25108 states have (on average 1.2418750995698582) internal successors, (31181), 26173 states have internal predecessors, (31181), 14384 states have call successors, (14384), 3825 states have call predecessors, (14384), 3739 states have return successors, (14508), 13824 states have call predecessors, (14508), 14376 states have call successors, (14508) [2022-11-03 01:47:13,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43234 states to 43234 states and 60073 transitions. [2022-11-03 01:47:13,915 INFO L78 Accepts]: Start accepts. Automaton has 43234 states and 60073 transitions. Word has length 166 [2022-11-03 01:47:13,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:13,916 INFO L495 AbstractCegarLoop]: Abstraction has 43234 states and 60073 transitions. [2022-11-03 01:47:13,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 01:47:13,916 INFO L276 IsEmpty]: Start isEmpty. Operand 43234 states and 60073 transitions. [2022-11-03 01:47:13,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-03 01:47:13,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:13,921 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 5, 5, 4, 3, 3, 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] [2022-11-03 01:47:13,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 01:47:13,921 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)] === [2022-11-03 01:47:13,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:13,922 INFO L85 PathProgramCache]: Analyzing trace with hash -429108998, now seen corresponding path program 1 times [2022-11-03 01:47:13,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:47:13,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141043091] [2022-11-03 01:47:13,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:13,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:14,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:14,463 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2022-11-03 01:47:14,463 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:14,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141043091] [2022-11-03 01:47:14,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141043091] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:14,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:47:14,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:47:14,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579605587] [2022-11-03 01:47:14,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:14,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:47:14,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:47:14,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:47:14,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:47:14,466 INFO L87 Difference]: Start difference. First operand 43234 states and 60073 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 01:47:19,008 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 [] [2022-11-03 01:47:23,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:47:26,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:47:26,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:26,521 INFO L93 Difference]: Finished difference Result 43257 states and 60094 transitions. [2022-11-03 01:47:26,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:47:26,523 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 171 [2022-11-03 01:47:26,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:26,755 INFO L225 Difference]: With dead ends: 43257 [2022-11-03 01:47:26,755 INFO L226 Difference]: Without dead ends: 43255 [2022-11-03 01:47:26,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:47:26,781 INFO L413 NwaCegarLoop]: 2000 mSDtfsCounter, 1379 mSDsluCounter, 6358 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1388 SdHoareTripleChecker+Valid, 7597 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:26,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1388 Valid, 7597 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1037 Invalid, 1 Unknown, 0 Unchecked, 9.9s Time] [2022-11-03 01:47:26,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43255 states. [2022-11-03 01:47:29,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43255 to 43238. [2022-11-03 01:47:29,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43238 states, 25111 states have (on average 1.2418462028593047) internal successors, (31184), 26176 states have internal predecessors, (31184), 14384 states have call successors, (14384), 3826 states have call predecessors, (14384), 3740 states have return successors, (14508), 13824 states have call predecessors, (14508), 14376 states have call successors, (14508) [2022-11-03 01:47:29,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43238 states to 43238 states and 60076 transitions. [2022-11-03 01:47:29,923 INFO L78 Accepts]: Start accepts. Automaton has 43238 states and 60076 transitions. Word has length 171 [2022-11-03 01:47:29,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:29,923 INFO L495 AbstractCegarLoop]: Abstraction has 43238 states and 60076 transitions. [2022-11-03 01:47:29,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 01:47:29,924 INFO L276 IsEmpty]: Start isEmpty. Operand 43238 states and 60076 transitions. [2022-11-03 01:47:29,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-11-03 01:47:29,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:29,931 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:29,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 01:47:29,932 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)] === [2022-11-03 01:47:29,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:29,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1020113719, now seen corresponding path program 1 times [2022-11-03 01:47:29,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:47:29,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268391863] [2022-11-03 01:47:29,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:29,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:30,572 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2022-11-03 01:47:30,573 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:30,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268391863] [2022-11-03 01:47:30,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268391863] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:30,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:47:30,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:47:30,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753305765] [2022-11-03 01:47:30,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:30,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:47:30,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:47:30,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:47:30,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:47:30,576 INFO L87 Difference]: Start difference. First operand 43238 states and 60076 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-03 01:47:35,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:47:41,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:47:41,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:41,584 INFO L93 Difference]: Finished difference Result 43261 states and 60097 transitions. [2022-11-03 01:47:41,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:47:41,585 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 177 [2022-11-03 01:47:41,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:41,743 INFO L225 Difference]: With dead ends: 43261 [2022-11-03 01:47:41,744 INFO L226 Difference]: Without dead ends: 43259 [2022-11-03 01:47:41,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:47:41,760 INFO L413 NwaCegarLoop]: 2000 mSDtfsCounter, 1379 mSDsluCounter, 6358 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1387 SdHoareTripleChecker+Valid, 7597 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:41,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1387 Valid, 7597 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1037 Invalid, 1 Unknown, 0 Unchecked, 8.9s Time] [2022-11-03 01:47:41,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43259 states. [2022-11-03 01:47:44,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43259 to 43242. [2022-11-03 01:47:44,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43242 states, 25114 states have (on average 1.2418173130524808) internal successors, (31187), 26179 states have internal predecessors, (31187), 14384 states have call successors, (14384), 3827 states have call predecessors, (14384), 3741 states have return successors, (14508), 13824 states have call predecessors, (14508), 14376 states have call successors, (14508) [2022-11-03 01:47:44,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43242 states to 43242 states and 60079 transitions. [2022-11-03 01:47:44,687 INFO L78 Accepts]: Start accepts. Automaton has 43242 states and 60079 transitions. Word has length 177 [2022-11-03 01:47:44,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:44,688 INFO L495 AbstractCegarLoop]: Abstraction has 43242 states and 60079 transitions. [2022-11-03 01:47:44,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-03 01:47:44,689 INFO L276 IsEmpty]: Start isEmpty. Operand 43242 states and 60079 transitions. [2022-11-03 01:47:44,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 01:47:44,695 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:44,696 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 6, 5, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:44,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 01:47:44,696 INFO L420 AbstractCegarLoop]: === Iteration 12 === 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)] === [2022-11-03 01:47:44,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:44,697 INFO L85 PathProgramCache]: Analyzing trace with hash 993399092, now seen corresponding path program 1 times [2022-11-03 01:47:44,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:47:44,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566809638] [2022-11-03 01:47:44,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:44,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:44,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:45,234 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2022-11-03 01:47:45,235 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:45,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566809638] [2022-11-03 01:47:45,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566809638] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:45,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:47:45,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:47:45,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19799185] [2022-11-03 01:47:45,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:45,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:47:45,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:47:45,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:47:45,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:47:45,237 INFO L87 Difference]: Start difference. First operand 43242 states and 60079 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-03 01:47:49,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:47:54,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:47:56,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:47:56,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:56,404 INFO L93 Difference]: Finished difference Result 43265 states and 60100 transitions. [2022-11-03 01:47:56,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:47:56,407 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 182 [2022-11-03 01:47:56,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:56,570 INFO L225 Difference]: With dead ends: 43265 [2022-11-03 01:47:56,570 INFO L226 Difference]: Without dead ends: 43263 [2022-11-03 01:47:56,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:47:56,591 INFO L413 NwaCegarLoop]: 2000 mSDtfsCounter, 1379 mSDsluCounter, 6358 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1386 SdHoareTripleChecker+Valid, 7597 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:56,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1386 Valid, 7597 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1037 Invalid, 1 Unknown, 0 Unchecked, 9.3s Time] [2022-11-03 01:47:56,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43263 states. [2022-11-03 01:47:59,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43263 to 43246. [2022-11-03 01:47:59,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43246 states, 25117 states have (on average 1.2417884301469124) internal successors, (31190), 26182 states have internal predecessors, (31190), 14384 states have call successors, (14384), 3828 states have call predecessors, (14384), 3742 states have return successors, (14508), 13824 states have call predecessors, (14508), 14376 states have call successors, (14508) [2022-11-03 01:47:59,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43246 states to 43246 states and 60082 transitions. [2022-11-03 01:47:59,247 INFO L78 Accepts]: Start accepts. Automaton has 43246 states and 60082 transitions. Word has length 182 [2022-11-03 01:47:59,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:59,248 INFO L495 AbstractCegarLoop]: Abstraction has 43246 states and 60082 transitions. [2022-11-03 01:47:59,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-03 01:47:59,249 INFO L276 IsEmpty]: Start isEmpty. Operand 43246 states and 60082 transitions. [2022-11-03 01:47:59,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-11-03 01:47:59,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:59,253 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 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] [2022-11-03 01:47:59,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 01:47:59,254 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)] === [2022-11-03 01:47:59,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:59,254 INFO L85 PathProgramCache]: Analyzing trace with hash 483161603, now seen corresponding path program 1 times [2022-11-03 01:47:59,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:47:59,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607522890] [2022-11-03 01:47:59,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:59,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:59,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:59,931 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 466 trivial. 0 not checked. [2022-11-03 01:47:59,931 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:59,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607522890] [2022-11-03 01:47:59,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607522890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:59,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:47:59,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:47:59,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486185591] [2022-11-03 01:47:59,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:59,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:47:59,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:47:59,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:47:59,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:47:59,933 INFO L87 Difference]: Start difference. First operand 43246 states and 60082 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 01:48:04,383 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 [] [2022-11-03 01:48:08,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:48:10,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:48:10,190 INFO L93 Difference]: Finished difference Result 43269 states and 60103 transitions. [2022-11-03 01:48:10,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:48:10,191 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 186 [2022-11-03 01:48:10,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:48:10,344 INFO L225 Difference]: With dead ends: 43269 [2022-11-03 01:48:10,344 INFO L226 Difference]: Without dead ends: 43267 [2022-11-03 01:48:10,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:48:10,360 INFO L413 NwaCegarLoop]: 2000 mSDtfsCounter, 1379 mSDsluCounter, 6358 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1385 SdHoareTripleChecker+Valid, 7597 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:48:10,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1385 Valid, 7597 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1037 Invalid, 1 Unknown, 0 Unchecked, 7.9s Time] [2022-11-03 01:48:10,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43267 states. [2022-11-03 01:48:12,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43267 to 43250. [2022-11-03 01:48:12,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43250 states, 25120 states have (on average 1.2417595541401274) internal successors, (31193), 26185 states have internal predecessors, (31193), 14384 states have call successors, (14384), 3829 states have call predecessors, (14384), 3743 states have return successors, (14508), 13824 states have call predecessors, (14508), 14376 states have call successors, (14508) [2022-11-03 01:48:13,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43250 states to 43250 states and 60085 transitions. [2022-11-03 01:48:13,036 INFO L78 Accepts]: Start accepts. Automaton has 43250 states and 60085 transitions. Word has length 186 [2022-11-03 01:48:13,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:48:13,037 INFO L495 AbstractCegarLoop]: Abstraction has 43250 states and 60085 transitions. [2022-11-03 01:48:13,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 01:48:13,038 INFO L276 IsEmpty]: Start isEmpty. Operand 43250 states and 60085 transitions. [2022-11-03 01:48:13,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-11-03 01:48:13,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:48:13,044 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 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] [2022-11-03 01:48:13,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 01:48:13,045 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)] === [2022-11-03 01:48:13,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:48:13,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1871626772, now seen corresponding path program 1 times [2022-11-03 01:48:13,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:48:13,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131876280] [2022-11-03 01:48:13,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:13,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:48:13,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:13,744 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 491 trivial. 0 not checked. [2022-11-03 01:48:13,744 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:48:13,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131876280] [2022-11-03 01:48:13,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131876280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:48:13,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:48:13,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:48:13,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035168858] [2022-11-03 01:48:13,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:48:13,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:48:13,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:48:13,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:48:13,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:48:13,747 INFO L87 Difference]: Start difference. First operand 43250 states and 60085 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-03 01:48:18,231 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 [] [2022-11-03 01:48:23,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:48:25,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:48:25,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:48:25,399 INFO L93 Difference]: Finished difference Result 43273 states and 60106 transitions. [2022-11-03 01:48:25,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:48:25,401 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 192 [2022-11-03 01:48:25,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:48:25,671 INFO L225 Difference]: With dead ends: 43273 [2022-11-03 01:48:25,672 INFO L226 Difference]: Without dead ends: 43271 [2022-11-03 01:48:25,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:48:25,688 INFO L413 NwaCegarLoop]: 2000 mSDtfsCounter, 1379 mSDsluCounter, 6358 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1384 SdHoareTripleChecker+Valid, 7597 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:48:25,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1384 Valid, 7597 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1037 Invalid, 1 Unknown, 0 Unchecked, 9.3s Time] [2022-11-03 01:48:25,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43271 states. [2022-11-03 01:48:28,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43271 to 43254. [2022-11-03 01:48:28,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43254 states, 25123 states have (on average 1.2417306850296541) internal successors, (31196), 26188 states have internal predecessors, (31196), 14384 states have call successors, (14384), 3830 states have call predecessors, (14384), 3744 states have return successors, (14508), 13824 states have call predecessors, (14508), 14376 states have call successors, (14508) [2022-11-03 01:48:28,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43254 states to 43254 states and 60088 transitions. [2022-11-03 01:48:28,590 INFO L78 Accepts]: Start accepts. Automaton has 43254 states and 60088 transitions. Word has length 192 [2022-11-03 01:48:28,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:48:28,591 INFO L495 AbstractCegarLoop]: Abstraction has 43254 states and 60088 transitions. [2022-11-03 01:48:28,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-03 01:48:28,592 INFO L276 IsEmpty]: Start isEmpty. Operand 43254 states and 60088 transitions. [2022-11-03 01:48:28,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-03 01:48:28,602 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:48:28,602 INFO L195 NwaCegarLoop]: trace histogram [15, 9, 9, 9, 9, 9, 9, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:48:28,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 01:48:28,603 INFO L420 AbstractCegarLoop]: === Iteration 15 === 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)] === [2022-11-03 01:48:28,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:48:28,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1218104905, now seen corresponding path program 1 times [2022-11-03 01:48:28,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:48:28,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467491345] [2022-11-03 01:48:28,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:28,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:48:28,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:29,354 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2022-11-03 01:48:29,354 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:48:29,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467491345] [2022-11-03 01:48:29,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467491345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:48:29,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:48:29,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:48:29,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203661040] [2022-11-03 01:48:29,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:48:29,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:48:29,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:48:29,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:48:29,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:48:29,356 INFO L87 Difference]: Start difference. First operand 43254 states and 60088 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 01:48:33,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:48:39,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:48:41,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:48:41,668 INFO L93 Difference]: Finished difference Result 73407 states and 101890 transitions. [2022-11-03 01:48:41,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:48:41,669 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 190 [2022-11-03 01:48:41,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:48:42,168 INFO L225 Difference]: With dead ends: 73407 [2022-11-03 01:48:42,168 INFO L226 Difference]: Without dead ends: 73405 [2022-11-03 01:48:42,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:48:42,197 INFO L413 NwaCegarLoop]: 2206 mSDtfsCounter, 1586 mSDsluCounter, 6898 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1588 SdHoareTripleChecker+Valid, 8219 SdHoareTripleChecker+Invalid, 1219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:48:42,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1588 Valid, 8219 Invalid, 1219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1215 Invalid, 1 Unknown, 0 Unchecked, 9.0s Time] [2022-11-03 01:48:42,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73405 states.