./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.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_d31732bf-e5cd-4bbf-8204-0fea00c02888/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31732bf-e5cd-4bbf-8204-0fea00c02888/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_d31732bf-e5cd-4bbf-8204-0fea00c02888/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31732bf-e5cd-4bbf-8204-0fea00c02888/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31732bf-e5cd-4bbf-8204-0fea00c02888/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_d31732bf-e5cd-4bbf-8204-0fea00c02888/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 5a5abe7d84ebfba3a3d05a8884a5cfb8bfd1e0698553d38fcfc4a2d2724f4159 --- 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 03:49:36,144 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:49:36,147 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:49:36,200 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:49:36,201 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:49:36,205 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:49:36,207 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:49:36,211 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:49:36,212 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:49:36,213 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:49:36,214 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:49:36,215 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:49:36,216 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:49:36,217 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:49:36,218 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:49:36,219 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:49:36,219 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:49:36,220 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:49:36,222 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:49:36,239 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:49:36,240 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:49:36,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:49:36,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:49:36,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:49:36,257 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:49:36,259 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:49:36,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:49:36,261 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:49:36,262 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:49:36,263 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:49:36,264 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:49:36,264 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:49:36,267 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:49:36,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:49:36,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:49:36,271 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:49:36,272 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:49:36,272 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:49:36,273 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:49:36,282 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:49:36,283 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:49:36,284 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31732bf-e5cd-4bbf-8204-0fea00c02888/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 03:49:36,335 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:49:36,336 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:49:36,336 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:49:36,337 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:49:36,338 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:49:36,338 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:49:36,338 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:49:36,338 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:49:36,339 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:49:36,339 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:49:36,340 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:49:36,340 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:49:36,340 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:49:36,341 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:49:36,341 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:49:36,341 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:49:36,341 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:49:36,342 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:49:36,343 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:49:36,343 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:49:36,343 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:49:36,343 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:49:36,343 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:49:36,344 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:49:36,344 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:49:36,344 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:49:36,344 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:49:36,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:49:36,345 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:49:36,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:49:36,345 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:49:36,346 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:49:36,346 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:49:36,346 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:49:36,346 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:49:36,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:49:36,347 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:49:36,347 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:49:36,347 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_d31732bf-e5cd-4bbf-8204-0fea00c02888/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31732bf-e5cd-4bbf-8204-0fea00c02888/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a5abe7d84ebfba3a3d05a8884a5cfb8bfd1e0698553d38fcfc4a2d2724f4159 [2022-11-03 03:49:36,600 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:49:36,629 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:49:36,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:49:36,633 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:49:36,634 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:49:36,635 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31732bf-e5cd-4bbf-8204-0fea00c02888/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i [2022-11-03 03:49:36,704 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31732bf-e5cd-4bbf-8204-0fea00c02888/bin/utaipan-7li7fVZpFI/data/82bc684be/ec97d6ad6c4d48fab13259d6e0994cd6/FLAG21d1db082 [2022-11-03 03:49:37,625 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:49:37,625 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31732bf-e5cd-4bbf-8204-0fea00c02888/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i [2022-11-03 03:49:37,679 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31732bf-e5cd-4bbf-8204-0fea00c02888/bin/utaipan-7li7fVZpFI/data/82bc684be/ec97d6ad6c4d48fab13259d6e0994cd6/FLAG21d1db082 [2022-11-03 03:49:38,122 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31732bf-e5cd-4bbf-8204-0fea00c02888/bin/utaipan-7li7fVZpFI/data/82bc684be/ec97d6ad6c4d48fab13259d6e0994cd6 [2022-11-03 03:49:38,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:49:38,129 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:49:38,130 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:49:38,130 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:49:38,134 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:49:38,135 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:49:38" (1/1) ... [2022-11-03 03:49:38,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62f4e2de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:49:38, skipping insertion in model container [2022-11-03 03:49:38,136 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:49:38" (1/1) ... [2022-11-03 03:49:38,143 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:49:38,314 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:49:42,245 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_d31732bf-e5cd-4bbf-8204-0fea00c02888/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i[459471,459484] [2022-11-03 03:49:42,248 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_d31732bf-e5cd-4bbf-8204-0fea00c02888/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i[459640,459653] [2022-11-03 03:49:42,249 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_d31732bf-e5cd-4bbf-8204-0fea00c02888/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i[459807,459820] [2022-11-03 03:49:42,249 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_d31732bf-e5cd-4bbf-8204-0fea00c02888/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i[459975,459988] [2022-11-03 03:49:42,277 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:49:42,358 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:49:42,822 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_d31732bf-e5cd-4bbf-8204-0fea00c02888/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i[459471,459484] [2022-11-03 03:49:42,822 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_d31732bf-e5cd-4bbf-8204-0fea00c02888/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i[459640,459653] [2022-11-03 03:49:42,823 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_d31732bf-e5cd-4bbf-8204-0fea00c02888/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i[459807,459820] [2022-11-03 03:49:42,823 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_d31732bf-e5cd-4bbf-8204-0fea00c02888/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i[459975,459988] [2022-11-03 03:49:42,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:49:43,048 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:49:43,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:49:43 WrapperNode [2022-11-03 03:49:43,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:49:43,050 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:49:43,050 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:49:43,051 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:49:43,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:49:43" (1/1) ... [2022-11-03 03:49:43,178 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:49:43" (1/1) ... [2022-11-03 03:49:43,409 INFO L138 Inliner]: procedures = 522, calls = 3749, calls flagged for inlining = 276, calls inlined = 260, statements flattened = 6740 [2022-11-03 03:49:43,410 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:49:43,411 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:49:43,411 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:49:43,411 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:49:43,421 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:49:43" (1/1) ... [2022-11-03 03:49:43,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:49:43" (1/1) ... [2022-11-03 03:49:43,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:49:43" (1/1) ... [2022-11-03 03:49:43,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:49:43" (1/1) ... [2022-11-03 03:49:43,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:49:43" (1/1) ... [2022-11-03 03:49:43,787 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:49:43" (1/1) ... [2022-11-03 03:49:43,873 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:49:43" (1/1) ... [2022-11-03 03:49:43,902 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:49:43" (1/1) ... [2022-11-03 03:49:43,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:49:43,961 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:49:43,961 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:49:43,961 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:49:43,963 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:49:43" (1/1) ... [2022-11-03 03:49:43,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:49:43,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31732bf-e5cd-4bbf-8204-0fea00c02888/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:49:43,995 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31732bf-e5cd-4bbf-8204-0fea00c02888/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:49:44,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d31732bf-e5cd-4bbf-8204-0fea00c02888/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:49:44,094 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_ioread8 [2022-11-03 03:49:44,095 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_ioread8 [2022-11-03 03:49:44,095 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_frequency_to_channel [2022-11-03 03:49:44,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_frequency_to_channel [2022-11-03 03:49:44,095 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_free_tx_ring [2022-11-03 03:49:44,095 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_free_tx_ring [2022-11-03 03:49:44,096 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_iowrite8 [2022-11-03 03:49:44,096 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_iowrite8 [2022-11-03 03:49:44,096 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-03 03:49:44,096 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-03 03:49:44,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 03:49:44,096 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 03:49:44,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 03:49:44,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 03:49:44,097 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_init [2022-11-03 03:49:44,097 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_init [2022-11-03 03:49:44,097 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_calc_rssi [2022-11-03 03:49:44,097 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_calc_rssi [2022-11-03 03:49:44,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 03:49:44,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 03:49:44,098 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-03 03:49:44,098 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-03 03:49:44,098 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-03 03:49:44,098 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-03 03:49:44,098 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 03:49:44,098 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 03:49:44,099 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_write_phy_antenna [2022-11-03 03:49:44,099 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_write_phy_antenna [2022-11-03 03:49:44,099 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_init [2022-11-03 03:49:44,099 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_init [2022-11-03 03:49:44,099 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_ioread32 [2022-11-03 03:49:44,099 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_ioread32 [2022-11-03 03:49:44,099 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 03:49:44,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 03:49:44,100 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_free_rx_ring [2022-11-03 03:49:44,100 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_free_rx_ring [2022-11-03 03:49:44,100 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_bss_info_changed [2022-11-03 03:49:44,100 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_bss_info_changed [2022-11-03 03:49:44,100 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_calc_rssi [2022-11-03 03:49:44,100 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_calc_rssi [2022-11-03 03:49:44,101 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 03:49:44,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 03:49:44,101 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-03 03:49:44,101 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-03 03:49:44,101 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_rtl8180_driver_exit_14_2 [2022-11-03 03:49:44,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_rtl8180_driver_exit_14_2 [2022-11-03 03:49:44,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:49:44,102 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225z2_rf_set_tx_power [2022-11-03 03:49:44,102 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225z2_rf_set_tx_power [2022-11-03 03:49:44,102 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_ioread16 [2022-11-03 03:49:44,102 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_ioread16 [2022-11-03 03:49:44,102 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_set_anaparam [2022-11-03 03:49:44,102 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_set_anaparam [2022-11-03 03:49:44,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 03:49:44,103 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_get_tx_rate [2022-11-03 03:49:44,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_get_tx_rate [2022-11-03 03:49:44,103 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_conf_erp [2022-11-03 03:49:44,103 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_conf_erp [2022-11-03 03:49:44,103 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 03:49:44,103 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 03:49:44,104 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 03:49:44,104 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 03:49:44,104 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_stop [2022-11-03 03:49:44,104 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_stop [2022-11-03 03:49:44,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 03:49:44,104 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 03:49:44,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 03:49:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_stop [2022-11-03 03:49:44,105 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_stop [2022-11-03 03:49:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:49:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-03 03:49:44,105 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-03 03:49:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_get_tsf [2022-11-03 03:49:44,105 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_get_tsf [2022-11-03 03:49:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 03:49:44,106 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 03:49:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-03 03:49:44,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-03 03:49:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-03 03:49:44,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-03 03:49:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-03 03:49:44,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-03 03:49:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2022-11-03 03:49:44,107 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2022-11-03 03:49:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_add_interface [2022-11-03 03:49:44,107 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_add_interface [2022-11-03 03:49:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_write_phy_antenna [2022-11-03 03:49:44,107 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_write_phy_antenna [2022-11-03 03:49:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-03 03:49:44,108 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-03 03:49:44,108 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-03 03:49:44,108 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-03 03:49:44,108 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_set_channel [2022-11-03 03:49:44,108 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_set_channel [2022-11-03 03:49:44,108 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_set_tx_power [2022-11-03 03:49:44,109 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_set_tx_power [2022-11-03 03:49:44,109 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_set_channel [2022-11-03 03:49:44,109 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_set_channel [2022-11-03 03:49:44,109 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 03:49:44,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 03:49:44,109 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2022-11-03 03:49:44,109 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2022-11-03 03:49:44,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:49:44,110 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-03 03:49:44,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-03 03:49:44,110 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-03 03:49:44,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-03 03:49:44,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:49:44,110 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-03 03:49:44,111 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-03 03:49:44,111 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_free_hw [2022-11-03 03:49:44,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_free_hw [2022-11-03 03:49:44,111 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_write_phy_cck [2022-11-03 03:49:44,111 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_write_phy_cck [2022-11-03 03:49:44,111 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 03:49:44,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 03:49:44,112 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 03:49:44,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 03:49:44,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:49:44,112 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:49:44,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:49:44,112 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-03 03:49:44,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-03 03:49:44,113 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_get_rts_cts_rate [2022-11-03 03:49:44,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_get_rts_cts_rate [2022-11-03 03:49:44,113 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_start [2022-11-03 03:49:44,113 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_start [2022-11-03 03:49:44,113 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_set_channel [2022-11-03 03:49:44,113 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_set_channel [2022-11-03 03:49:44,113 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 03:49:44,114 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 03:49:44,114 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_resume [2022-11-03 03:49:44,114 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_resume [2022-11-03 03:49:44,114 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_write_phy_ofdm [2022-11-03 03:49:44,114 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_write_phy_ofdm [2022-11-03 03:49:44,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_rtl8180_priv [2022-11-03 03:49:44,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_rtl8180_priv [2022-11-03 03:49:44,115 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_calc_rssi [2022-11-03 03:49:44,115 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_calc_rssi [2022-11-03 03:49:44,115 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_write_phy [2022-11-03 03:49:44,115 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_write_phy [2022-11-03 03:49:44,115 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2022-11-03 03:49:44,115 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2022-11-03 03:49:44,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:49:44,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:49:44,116 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-03 03:49:44,116 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-03 03:49:44,116 INFO L130 BoogieDeclarations]: Found specification of procedure write_sa2400 [2022-11-03 03:49:44,116 INFO L138 BoogieDeclarations]: Found implementation of procedure write_sa2400 [2022-11-03 03:49:44,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 03:49:44,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 03:49:44,116 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 03:49:44,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 03:49:44,117 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_stop [2022-11-03 03:49:44,117 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_stop [2022-11-03 03:49:44,117 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 03:49:44,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 03:49:44,118 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ieee80211_free_hw [2022-11-03 03:49:44,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ieee80211_free_hw [2022-11-03 03:49:44,118 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_init [2022-11-03 03:49:44,118 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_init [2022-11-03 03:49:44,118 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225z2_rf_init [2022-11-03 03:49:44,118 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225z2_rf_init [2022-11-03 03:49:44,119 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_remove [2022-11-03 03:49:44,119 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_remove [2022-11-03 03:49:44,119 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-11-03 03:49:44,119 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-11-03 03:49:44,119 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-03 03:49:44,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-03 03:49:44,119 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-03 03:49:44,119 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-03 03:49:44,120 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_stop [2022-11-03 03:49:44,120 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_stop [2022-11-03 03:49:44,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 03:49:44,120 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 03:49:44,120 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-03 03:49:44,120 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-03 03:49:44,120 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_write [2022-11-03 03:49:44,121 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_write [2022-11-03 03:49:44,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:49:44,121 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_write_phy_antenna [2022-11-03 03:49:44,121 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_write_phy_antenna [2022-11-03 03:49:44,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:49:44,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 03:49:44,121 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2022-11-03 03:49:44,121 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2022-11-03 03:49:44,122 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 03:49:44,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 03:49:44,122 INFO L130 BoogieDeclarations]: Found specification of procedure write_max2820 [2022-11-03 03:49:44,122 INFO L138 BoogieDeclarations]: Found implementation of procedure write_max2820 [2022-11-03 03:49:44,122 INFO L130 BoogieDeclarations]: Found specification of procedure write_grf5101 [2022-11-03 03:49:44,122 INFO L138 BoogieDeclarations]: Found implementation of procedure write_grf5101 [2022-11-03 03:49:44,122 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_remove_interface [2022-11-03 03:49:44,122 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_remove_interface [2022-11-03 03:49:44,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_61 [2022-11-03 03:49:44,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_61 [2022-11-03 03:49:44,123 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2022-11-03 03:49:44,123 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2022-11-03 03:49:44,123 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_read [2022-11-03 03:49:44,123 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_read [2022-11-03 03:49:44,123 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_set_channel [2022-11-03 03:49:44,124 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_set_channel [2022-11-03 03:49:44,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:49:44,124 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_93cx6_read [2022-11-03 03:49:44,124 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_93cx6_read [2022-11-03 03:49:44,124 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2022-11-03 03:49:44,124 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2022-11-03 03:49:44,124 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 03:49:44,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 03:49:44,125 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_handle_tx [2022-11-03 03:49:44,125 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_handle_tx [2022-11-03 03:49:44,125 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_configure_filter [2022-11-03 03:49:44,125 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_configure_filter [2022-11-03 03:49:44,125 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_rtl8180_priv [2022-11-03 03:49:44,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_rtl8180_priv [2022-11-03 03:49:44,126 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2022-11-03 03:49:44,126 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2022-11-03 03:49:44,126 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_len [2022-11-03 03:49:44,126 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_len [2022-11-03 03:49:44,126 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 03:49:44,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 03:49:44,126 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_prepare_multicast [2022-11-03 03:49:44,126 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_prepare_multicast [2022-11-03 03:49:44,127 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-03 03:49:44,127 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-03 03:49:44,127 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_iowrite32 [2022-11-03 03:49:44,127 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_iowrite32 [2022-11-03 03:49:44,127 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_93cx6_multiread [2022-11-03 03:49:44,127 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_93cx6_multiread [2022-11-03 03:49:44,127 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2022-11-03 03:49:44,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:49:44,128 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-11-03 03:49:44,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-11-03 03:49:44,128 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_config [2022-11-03 03:49:44,128 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_config [2022-11-03 03:49:44,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 03:49:44,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 03:49:44,129 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_tx [2022-11-03 03:49:44,129 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_tx [2022-11-03 03:49:44,129 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_iowrite16 [2022-11-03 03:49:44,129 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_iowrite16 [2022-11-03 03:49:44,129 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_CB [2022-11-03 03:49:44,129 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_CB [2022-11-03 03:49:45,523 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:49:45,526 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:49:45,783 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 03:49:55,874 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-03 03:49:56,061 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:49:58,313 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:49:58,314 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 03:49:58,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:49:58 BoogieIcfgContainer [2022-11-03 03:49:58,320 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:49:58,323 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:49:58,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:49:58,327 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:49:58,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:49:38" (1/3) ... [2022-11-03 03:49:58,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dc0f6ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:49:58, skipping insertion in model container [2022-11-03 03:49:58,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:49:43" (2/3) ... [2022-11-03 03:49:58,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dc0f6ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:49:58, skipping insertion in model container [2022-11-03 03:49:58,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:49:58" (3/3) ... [2022-11-03 03:49:58,335 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i [2022-11-03 03:49:58,358 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:49:58,358 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-03 03:49:58,485 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:49:58,491 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;@1d827f59, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:49:58,492 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-03 03:49:58,504 INFO L276 IsEmpty]: Start isEmpty. Operand has 2498 states, 1174 states have (on average 1.2589437819420783) internal successors, (1478), 1212 states have internal predecessors, (1478), 1209 states have call successors, (1209), 113 states have call predecessors, (1209), 112 states have return successors, (1201), 1184 states have call predecessors, (1201), 1201 states have call successors, (1201) [2022-11-03 03:49:58,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2022-11-03 03:49:58,537 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:49:58,538 INFO L195 NwaCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:49:58,539 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 03:49:58,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:49:58,544 INFO L85 PathProgramCache]: Analyzing trace with hash 298194244, now seen corresponding path program 1 times [2022-11-03 03:49:58,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:49:58,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118580683] [2022-11-03 03:49:58,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:49:58,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:49:59,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:49:59,808 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5112 trivial. 0 not checked. [2022-11-03 03:49:59,809 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:49:59,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118580683] [2022-11-03 03:49:59,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118580683] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:49:59,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:49:59,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:49:59,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690856977] [2022-11-03 03:49:59,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:49:59,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:49:59,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:49:59,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:49:59,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:50:00,003 INFO L87 Difference]: Start difference. First operand has 2498 states, 1174 states have (on average 1.2589437819420783) internal successors, (1478), 1212 states have internal predecessors, (1478), 1209 states have call successors, (1209), 113 states have call predecessors, (1209), 112 states have return successors, (1201), 1184 states have call predecessors, (1201), 1201 states have call successors, (1201) Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-11-03 03:50:02,256 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 03:50:06,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:50:07,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:50:07,926 INFO L93 Difference]: Finished difference Result 7260 states and 11399 transitions. [2022-11-03 03:50:07,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:50:07,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 381 [2022-11-03 03:50:07,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:50:08,017 INFO L225 Difference]: With dead ends: 7260 [2022-11-03 03:50:08,018 INFO L226 Difference]: Without dead ends: 4821 [2022-11-03 03:50:08,049 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 03:50:08,053 INFO L413 NwaCegarLoop]: 4667 mSDtfsCounter, 3667 mSDsluCounter, 3835 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3676 SdHoareTripleChecker+Valid, 8168 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:50:08,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3676 Valid, 8168 Invalid, 717 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 708 Invalid, 2 Unknown, 0 Unchecked, 7.4s Time] [2022-11-03 03:50:08,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4821 states. [2022-11-03 03:50:08,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4821 to 4815. [2022-11-03 03:50:08,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4815 states, 2265 states have (on average 1.2565121412803533) internal successors, (2846), 2337 states have internal predecessors, (2846), 2327 states have call successors, (2327), 221 states have call predecessors, (2327), 220 states have return successors, (2332), 2288 states have call predecessors, (2332), 2323 states have call successors, (2332) [2022-11-03 03:50:08,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4815 states to 4815 states and 7505 transitions. [2022-11-03 03:50:08,753 INFO L78 Accepts]: Start accepts. Automaton has 4815 states and 7505 transitions. Word has length 381 [2022-11-03 03:50:08,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:50:08,756 INFO L495 AbstractCegarLoop]: Abstraction has 4815 states and 7505 transitions. [2022-11-03 03:50:08,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-11-03 03:50:08,757 INFO L276 IsEmpty]: Start isEmpty. Operand 4815 states and 7505 transitions. [2022-11-03 03:50:08,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2022-11-03 03:50:08,776 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:50:08,777 INFO L195 NwaCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:50:08,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:50:08,777 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 03:50:08,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:50:08,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1635874778, now seen corresponding path program 1 times [2022-11-03 03:50:08,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:50:08,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040397293] [2022-11-03 03:50:08,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:50:08,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:50:09,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:50:09,586 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5112 trivial. 0 not checked. [2022-11-03 03:50:09,586 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:50:09,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040397293] [2022-11-03 03:50:09,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040397293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:50:09,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:50:09,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:50:09,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021019343] [2022-11-03 03:50:09,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:50:09,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:50:09,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:50:09,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:50:09,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:50:09,590 INFO L87 Difference]: Start difference. First operand 4815 states and 7505 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-11-03 03:50:13,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:50:14,968 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 03:50:16,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:50:16,501 INFO L93 Difference]: Finished difference Result 14075 states and 22016 transitions. [2022-11-03 03:50:16,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:50:16,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 383 [2022-11-03 03:50:16,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:50:16,709 INFO L225 Difference]: With dead ends: 14075 [2022-11-03 03:50:16,709 INFO L226 Difference]: Without dead ends: 9333 [2022-11-03 03:50:16,758 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 03:50:16,760 INFO L413 NwaCegarLoop]: 4679 mSDtfsCounter, 3590 mSDsluCounter, 3841 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3595 SdHoareTripleChecker+Valid, 8183 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:50:16,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3595 Valid, 8183 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 698 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2022-11-03 03:50:16,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9333 states. [2022-11-03 03:50:17,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9333 to 9305. [2022-11-03 03:50:17,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9305 states, 4351 states have (on average 1.2567225925074696) internal successors, (5468), 4490 states have internal predecessors, (5468), 4522 states have call successors, (4522), 432 states have call predecessors, (4522), 429 states have return successors, (4587), 4438 states have call predecessors, (4587), 4518 states have call successors, (4587) [2022-11-03 03:50:17,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9305 states to 9305 states and 14577 transitions. [2022-11-03 03:50:17,941 INFO L78 Accepts]: Start accepts. Automaton has 9305 states and 14577 transitions. Word has length 383 [2022-11-03 03:50:17,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:50:17,944 INFO L495 AbstractCegarLoop]: Abstraction has 9305 states and 14577 transitions. [2022-11-03 03:50:17,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-11-03 03:50:17,945 INFO L276 IsEmpty]: Start isEmpty. Operand 9305 states and 14577 transitions. [2022-11-03 03:50:17,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2022-11-03 03:50:17,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:50:17,965 INFO L195 NwaCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:50:17,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:50:17,967 INFO L420 AbstractCegarLoop]: === Iteration 3 === 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 03:50:17,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:50:17,967 INFO L85 PathProgramCache]: Analyzing trace with hash -509427797, now seen corresponding path program 1 times [2022-11-03 03:50:17,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:50:17,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978795217] [2022-11-03 03:50:17,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:50:17,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:50:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:50:19,463 INFO L134 CoverageAnalysis]: Checked inductivity of 5367 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5367 trivial. 0 not checked. [2022-11-03 03:50:19,465 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:50:19,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978795217] [2022-11-03 03:50:19,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978795217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:50:19,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:50:19,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:50:19,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121785266] [2022-11-03 03:50:19,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:50:19,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:50:19,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:50:19,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:50:19,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:50:19,470 INFO L87 Difference]: Start difference. First operand 9305 states and 14577 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2022-11-03 03:50:22,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:27,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:50:28,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:50:28,543 INFO L93 Difference]: Finished difference Result 9330 states and 14602 transitions. [2022-11-03 03:50:28,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:50:28,544 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 423 [2022-11-03 03:50:28,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:50:28,667 INFO L225 Difference]: With dead ends: 9330 [2022-11-03 03:50:28,668 INFO L226 Difference]: Without dead ends: 9328 [2022-11-03 03:50:28,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:50:28,685 INFO L413 NwaCegarLoop]: 3519 mSDtfsCounter, 3748 mSDsluCounter, 7741 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3764 SdHoareTripleChecker+Valid, 10562 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:50:28,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3764 Valid, 10562 Invalid, 1065 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1063 Invalid, 1 Unknown, 0 Unchecked, 8.4s Time] [2022-11-03 03:50:28,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9328 states. [2022-11-03 03:50:29,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9328 to 9326. [2022-11-03 03:50:29,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9326 states, 4363 states have (on average 1.256245702498281) internal successors, (5481), 4503 states have internal predecessors, (5481), 4524 states have call successors, (4524), 438 states have call predecessors, (4524), 436 states have return successors, (4594), 4440 states have call predecessors, (4594), 4520 states have call successors, (4594) [2022-11-03 03:50:29,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9326 states to 9326 states and 14599 transitions. [2022-11-03 03:50:29,783 INFO L78 Accepts]: Start accepts. Automaton has 9326 states and 14599 transitions. Word has length 423 [2022-11-03 03:50:29,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:50:29,784 INFO L495 AbstractCegarLoop]: Abstraction has 9326 states and 14599 transitions. [2022-11-03 03:50:29,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2022-11-03 03:50:29,785 INFO L276 IsEmpty]: Start isEmpty. Operand 9326 states and 14599 transitions. [2022-11-03 03:50:29,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2022-11-03 03:50:29,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:50:29,802 INFO L195 NwaCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:50:29,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:50:29,803 INFO L420 AbstractCegarLoop]: === Iteration 4 === 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 03:50:29,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:50:29,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1846096521, now seen corresponding path program 1 times [2022-11-03 03:50:29,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:50:29,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886714183] [2022-11-03 03:50:29,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:50:29,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:50:29,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:50:31,043 INFO L134 CoverageAnalysis]: Checked inductivity of 5377 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5375 trivial. 0 not checked. [2022-11-03 03:50:31,043 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:50:31,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886714183] [2022-11-03 03:50:31,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886714183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:50:31,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:50:31,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:50:31,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553534036] [2022-11-03 03:50:31,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:50:31,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:50:31,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:50:31,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:50:31,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:50:31,048 INFO L87 Difference]: Start difference. First operand 9326 states and 14599 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2022-11-03 03:50:33,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:37,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:50:38,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:50:38,858 INFO L93 Difference]: Finished difference Result 9334 states and 14605 transitions. [2022-11-03 03:50:38,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:50:38,859 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 432 [2022-11-03 03:50:38,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:50:38,927 INFO L225 Difference]: With dead ends: 9334 [2022-11-03 03:50:38,927 INFO L226 Difference]: Without dead ends: 9332 [2022-11-03 03:50:38,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:50:38,935 INFO L413 NwaCegarLoop]: 3522 mSDtfsCounter, 3742 mSDsluCounter, 7741 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3757 SdHoareTripleChecker+Valid, 10565 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:50:38,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3757 Valid, 10565 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1063 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2022-11-03 03:50:38,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9332 states. [2022-11-03 03:50:39,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9332 to 9330. [2022-11-03 03:50:39,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9330 states, 4366 states have (on average 1.256069628950985) internal successors, (5484), 4506 states have internal predecessors, (5484), 4524 states have call successors, (4524), 439 states have call predecessors, (4524), 437 states have return successors, (4594), 4440 states have call predecessors, (4594), 4520 states have call successors, (4594) [2022-11-03 03:50:39,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9330 states to 9330 states and 14602 transitions. [2022-11-03 03:50:39,809 INFO L78 Accepts]: Start accepts. Automaton has 9330 states and 14602 transitions. Word has length 432 [2022-11-03 03:50:39,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:50:39,810 INFO L495 AbstractCegarLoop]: Abstraction has 9330 states and 14602 transitions. [2022-11-03 03:50:39,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2022-11-03 03:50:39,811 INFO L276 IsEmpty]: Start isEmpty. Operand 9330 states and 14602 transitions. [2022-11-03 03:50:39,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2022-11-03 03:50:39,827 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:50:39,827 INFO L195 NwaCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:50:39,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:50:39,827 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 03:50:39,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:50:39,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1060634800, now seen corresponding path program 1 times [2022-11-03 03:50:39,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:50:39,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69544925] [2022-11-03 03:50:39,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:50:39,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:50:39,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:50:40,964 INFO L134 CoverageAnalysis]: Checked inductivity of 5382 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5378 trivial. 0 not checked. [2022-11-03 03:50:40,965 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:50:40,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69544925] [2022-11-03 03:50:40,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69544925] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:50:40,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:50:40,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:50:40,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975288240] [2022-11-03 03:50:40,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:50:40,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:50:40,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:50:40,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:50:40,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:50:40,970 INFO L87 Difference]: Start difference. First operand 9330 states and 14602 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-03 03:50:42,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:44,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:45,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:50,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:50:51,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:50:51,459 INFO L93 Difference]: Finished difference Result 9338 states and 14608 transitions. [2022-11-03 03:50:51,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:50:51,460 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 436 [2022-11-03 03:50:51,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:50:51,530 INFO L225 Difference]: With dead ends: 9338 [2022-11-03 03:50:51,530 INFO L226 Difference]: Without dead ends: 9336 [2022-11-03 03:50:51,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:50:51,543 INFO L413 NwaCegarLoop]: 3522 mSDtfsCounter, 3742 mSDsluCounter, 7741 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3756 SdHoareTripleChecker+Valid, 10565 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:50:51,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3756 Valid, 10565 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1063 Invalid, 1 Unknown, 0 Unchecked, 9.8s Time] [2022-11-03 03:50:51,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9336 states. [2022-11-03 03:50:52,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9336 to 9334. [2022-11-03 03:50:52,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9334 states, 4369 states have (on average 1.255893797207599) internal successors, (5487), 4509 states have internal predecessors, (5487), 4524 states have call successors, (4524), 440 states have call predecessors, (4524), 438 states have return successors, (4594), 4440 states have call predecessors, (4594), 4520 states have call successors, (4594) [2022-11-03 03:50:52,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9334 states to 9334 states and 14605 transitions. [2022-11-03 03:50:52,657 INFO L78 Accepts]: Start accepts. Automaton has 9334 states and 14605 transitions. Word has length 436 [2022-11-03 03:50:52,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:50:52,658 INFO L495 AbstractCegarLoop]: Abstraction has 9334 states and 14605 transitions. [2022-11-03 03:50:52,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-03 03:50:52,660 INFO L276 IsEmpty]: Start isEmpty. Operand 9334 states and 14605 transitions. [2022-11-03 03:50:52,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2022-11-03 03:50:52,679 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:50:52,679 INFO L195 NwaCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:50:52,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:50:52,680 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 03:50:52,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:50:52,680 INFO L85 PathProgramCache]: Analyzing trace with hash -981470553, now seen corresponding path program 1 times [2022-11-03 03:50:52,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:50:52,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232052287] [2022-11-03 03:50:52,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:50:52,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:50:52,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:50:53,848 INFO L134 CoverageAnalysis]: Checked inductivity of 5385 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5379 trivial. 0 not checked. [2022-11-03 03:50:53,849 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:50:53,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232052287] [2022-11-03 03:50:53,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232052287] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:50:53,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:50:53,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:50:53,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850790709] [2022-11-03 03:50:53,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:50:53,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:50:53,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:50:53,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:50:53,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:50:53,852 INFO L87 Difference]: Start difference. First operand 9334 states and 14605 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2022-11-03 03:50:57,592 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 03:51:01,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:51:02,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:02,022 INFO L93 Difference]: Finished difference Result 9342 states and 14611 transitions. [2022-11-03 03:51:02,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:51:02,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 438 [2022-11-03 03:51:02,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:02,083 INFO L225 Difference]: With dead ends: 9342 [2022-11-03 03:51:02,084 INFO L226 Difference]: Without dead ends: 9340 [2022-11-03 03:51:02,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:51:02,093 INFO L413 NwaCegarLoop]: 3522 mSDtfsCounter, 3743 mSDsluCounter, 7741 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3756 SdHoareTripleChecker+Valid, 10565 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:02,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3756 Valid, 10565 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1062 Invalid, 2 Unknown, 0 Unchecked, 7.6s Time] [2022-11-03 03:51:02,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9340 states. [2022-11-03 03:51:03,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9340 to 9338. [2022-11-03 03:51:03,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9338 states, 4372 states have (on average 1.2557182067703567) internal successors, (5490), 4512 states have internal predecessors, (5490), 4524 states have call successors, (4524), 441 states have call predecessors, (4524), 439 states have return successors, (4594), 4440 states have call predecessors, (4594), 4520 states have call successors, (4594) [2022-11-03 03:51:03,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9338 states to 9338 states and 14608 transitions. [2022-11-03 03:51:03,097 INFO L78 Accepts]: Start accepts. Automaton has 9338 states and 14608 transitions. Word has length 438 [2022-11-03 03:51:03,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:03,098 INFO L495 AbstractCegarLoop]: Abstraction has 9338 states and 14608 transitions. [2022-11-03 03:51:03,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2022-11-03 03:51:03,098 INFO L276 IsEmpty]: Start isEmpty. Operand 9338 states and 14608 transitions. [2022-11-03 03:51:03,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2022-11-03 03:51:03,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:03,120 INFO L195 NwaCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 5, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:03,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 03:51:03,120 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 03:51:03,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:03,121 INFO L85 PathProgramCache]: Analyzing trace with hash -543089744, now seen corresponding path program 1 times [2022-11-03 03:51:03,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:03,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637892715] [2022-11-03 03:51:03,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:03,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:04,207 INFO L134 CoverageAnalysis]: Checked inductivity of 5406 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5398 trivial. 0 not checked. [2022-11-03 03:51:04,208 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:04,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637892715] [2022-11-03 03:51:04,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637892715] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:04,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:04,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:51:04,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069887066] [2022-11-03 03:51:04,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:04,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:51:04,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:04,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:51:04,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:51:04,211 INFO L87 Difference]: Start difference. First operand 9338 states and 14608 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2022-11-03 03:51:06,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:11,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:51:12,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:12,132 INFO L93 Difference]: Finished difference Result 9346 states and 14614 transitions. [2022-11-03 03:51:12,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:51:12,133 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) Word has length 446 [2022-11-03 03:51:12,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:12,195 INFO L225 Difference]: With dead ends: 9346 [2022-11-03 03:51:12,195 INFO L226 Difference]: Without dead ends: 9344 [2022-11-03 03:51:12,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:51:12,208 INFO L413 NwaCegarLoop]: 3522 mSDtfsCounter, 3742 mSDsluCounter, 7741 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3754 SdHoareTripleChecker+Valid, 10565 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:12,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3754 Valid, 10565 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1063 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2022-11-03 03:51:12,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9344 states. [2022-11-03 03:51:13,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9344 to 9342. [2022-11-03 03:51:13,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9342 states, 4375 states have (on average 1.255542857142857) internal successors, (5493), 4515 states have internal predecessors, (5493), 4524 states have call successors, (4524), 442 states have call predecessors, (4524), 440 states have return successors, (4594), 4440 states have call predecessors, (4594), 4520 states have call successors, (4594) [2022-11-03 03:51:13,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9342 states to 9342 states and 14611 transitions. [2022-11-03 03:51:13,257 INFO L78 Accepts]: Start accepts. Automaton has 9342 states and 14611 transitions. Word has length 446 [2022-11-03 03:51:13,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:13,258 INFO L495 AbstractCegarLoop]: Abstraction has 9342 states and 14611 transitions. [2022-11-03 03:51:13,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2022-11-03 03:51:13,258 INFO L276 IsEmpty]: Start isEmpty. Operand 9342 states and 14611 transitions. [2022-11-03 03:51:13,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2022-11-03 03:51:13,273 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:13,274 INFO L195 NwaCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 6, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:13,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 03:51:13,274 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 03:51:13,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:13,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1842374274, now seen corresponding path program 1 times [2022-11-03 03:51:13,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:13,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463205893] [2022-11-03 03:51:13,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:13,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:13,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:14,308 INFO L134 CoverageAnalysis]: Checked inductivity of 5424 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5414 trivial. 0 not checked. [2022-11-03 03:51:14,309 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:14,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463205893] [2022-11-03 03:51:14,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463205893] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:14,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:14,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:51:14,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041344145] [2022-11-03 03:51:14,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:14,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:51:14,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:14,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:51:14,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:51:14,312 INFO L87 Difference]: Start difference. First operand 9342 states and 14611 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2022-11-03 03:51:15,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:20,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:51:21,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:21,670 INFO L93 Difference]: Finished difference Result 9350 states and 14617 transitions. [2022-11-03 03:51:21,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:51:21,671 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 451 [2022-11-03 03:51:21,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:21,728 INFO L225 Difference]: With dead ends: 9350 [2022-11-03 03:51:21,729 INFO L226 Difference]: Without dead ends: 9348 [2022-11-03 03:51:21,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:51:21,739 INFO L413 NwaCegarLoop]: 3522 mSDtfsCounter, 3742 mSDsluCounter, 7741 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3753 SdHoareTripleChecker+Valid, 10565 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:21,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3753 Valid, 10565 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1063 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2022-11-03 03:51:21,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9348 states. [2022-11-03 03:51:22,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9348 to 9346. [2022-11-03 03:51:22,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9346 states, 4378 states have (on average 1.2553677478300593) internal successors, (5496), 4518 states have internal predecessors, (5496), 4524 states have call successors, (4524), 443 states have call predecessors, (4524), 441 states have return successors, (4594), 4440 states have call predecessors, (4594), 4520 states have call successors, (4594) [2022-11-03 03:51:22,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9346 states to 9346 states and 14614 transitions. [2022-11-03 03:51:22,860 INFO L78 Accepts]: Start accepts. Automaton has 9346 states and 14614 transitions. Word has length 451 [2022-11-03 03:51:22,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:22,861 INFO L495 AbstractCegarLoop]: Abstraction has 9346 states and 14614 transitions. [2022-11-03 03:51:22,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2022-11-03 03:51:22,862 INFO L276 IsEmpty]: Start isEmpty. Operand 9346 states and 14614 transitions. [2022-11-03 03:51:22,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2022-11-03 03:51:22,876 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:22,876 INFO L195 NwaCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 7, 6, 6, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:22,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 03:51:22,877 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 03:51:22,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:22,877 INFO L85 PathProgramCache]: Analyzing trace with hash -422811767, now seen corresponding path program 1 times [2022-11-03 03:51:22,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:22,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316410931] [2022-11-03 03:51:22,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:22,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:23,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:23,827 INFO L134 CoverageAnalysis]: Checked inductivity of 5447 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 5435 trivial. 0 not checked. [2022-11-03 03:51:23,827 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:23,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316410931] [2022-11-03 03:51:23,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316410931] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:23,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:23,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:51:23,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209513429] [2022-11-03 03:51:23,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:23,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:51:23,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:23,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:51:23,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:51:23,831 INFO L87 Difference]: Start difference. First operand 9346 states and 14614 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-03 03:51:25,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:27,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:29,760 WARN L539 Checker$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 03:51:33,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:51:34,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:34,971 INFO L93 Difference]: Finished difference Result 9530 states and 14789 transitions. [2022-11-03 03:51:34,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:51:34,972 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 457 [2022-11-03 03:51:34,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:35,010 INFO L225 Difference]: With dead ends: 9530 [2022-11-03 03:51:35,011 INFO L226 Difference]: Without dead ends: 9528 [2022-11-03 03:51:35,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:51:35,017 INFO L413 NwaCegarLoop]: 3529 mSDtfsCounter, 3614 mSDsluCounter, 7948 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3619 SdHoareTripleChecker+Valid, 10743 SdHoareTripleChecker+Invalid, 1102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:35,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3619 Valid, 10743 Invalid, 1102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1097 Invalid, 3 Unknown, 0 Unchecked, 10.4s Time] [2022-11-03 03:51:35,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9528 states. [2022-11-03 03:51:36,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9528 to 9524. [2022-11-03 03:51:36,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9524 states, 4475 states have (on average 1.2520670391061453) internal successors, (5603), 4615 states have internal predecessors, (5603), 4555 states have call successors, (4555), 493 states have call predecessors, (4555), 491 states have return successors, (4625), 4471 states have call predecessors, (4625), 4551 states have call successors, (4625) [2022-11-03 03:51:36,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9524 states to 9524 states and 14783 transitions. [2022-11-03 03:51:36,137 INFO L78 Accepts]: Start accepts. Automaton has 9524 states and 14783 transitions. Word has length 457 [2022-11-03 03:51:36,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:36,138 INFO L495 AbstractCegarLoop]: Abstraction has 9524 states and 14783 transitions. [2022-11-03 03:51:36,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-03 03:51:36,138 INFO L276 IsEmpty]: Start isEmpty. Operand 9524 states and 14783 transitions. [2022-11-03 03:51:36,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2022-11-03 03:51:36,157 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:36,157 INFO L195 NwaCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 8, 7, 7, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:51:36,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 03:51:36,158 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 03:51:36,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:36,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1107585794, now seen corresponding path program 1 times [2022-11-03 03:51:36,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:36,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734014913] [2022-11-03 03:51:36,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:36,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:36,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:37,235 INFO L134 CoverageAnalysis]: Checked inductivity of 5472 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5458 trivial. 0 not checked. [2022-11-03 03:51:37,235 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:37,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734014913] [2022-11-03 03:51:37,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734014913] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:37,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:37,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:51:37,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004767011] [2022-11-03 03:51:37,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:37,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:51:37,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:37,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:51:37,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:51:37,239 INFO L87 Difference]: Start difference. First operand 9524 states and 14783 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-11-03 03:51:39,896 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 03:51:41,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:46,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:51:47,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:47,097 INFO L93 Difference]: Finished difference Result 9532 states and 14789 transitions. [2022-11-03 03:51:47,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:51:47,097 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 461 [2022-11-03 03:51:47,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:47,143 INFO L225 Difference]: With dead ends: 9532 [2022-11-03 03:51:47,143 INFO L226 Difference]: Without dead ends: 9530 [2022-11-03 03:51:47,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:51:47,152 INFO L413 NwaCegarLoop]: 3523 mSDtfsCounter, 3741 mSDsluCounter, 7743 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3750 SdHoareTripleChecker+Valid, 10568 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:47,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3750 Valid, 10568 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1061 Invalid, 3 Unknown, 0 Unchecked, 9.1s Time] [2022-11-03 03:51:47,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9530 states. [2022-11-03 03:51:48,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9530 to 9528. [2022-11-03 03:51:48,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9528 states, 4478 states have (on average 1.2518981688253685) internal successors, (5606), 4618 states have internal predecessors, (5606), 4555 states have call successors, (4555), 494 states have call predecessors, (4555), 492 states have return successors, (4625), 4471 states have call predecessors, (4625), 4551 states have call successors, (4625) [2022-11-03 03:51:48,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9528 states to 9528 states and 14786 transitions. [2022-11-03 03:51:48,411 INFO L78 Accepts]: Start accepts. Automaton has 9528 states and 14786 transitions. Word has length 461 [2022-11-03 03:51:48,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:48,412 INFO L495 AbstractCegarLoop]: Abstraction has 9528 states and 14786 transitions. [2022-11-03 03:51:48,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-11-03 03:51:48,412 INFO L276 IsEmpty]: Start isEmpty. Operand 9528 states and 14786 transitions. [2022-11-03 03:51:48,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2022-11-03 03:51:48,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:48,431 INFO L195 NwaCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:51:48,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 03:51:48,432 INFO L420 AbstractCegarLoop]: === Iteration 11 === 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 03:51:48,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:48,433 INFO L85 PathProgramCache]: Analyzing trace with hash -165970737, now seen corresponding path program 1 times [2022-11-03 03:51:48,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:48,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553208641] [2022-11-03 03:51:48,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:48,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:48,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:49,059 INFO L134 CoverageAnalysis]: Checked inductivity of 5138 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5138 trivial. 0 not checked. [2022-11-03 03:51:49,060 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:49,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553208641] [2022-11-03 03:51:49,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553208641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:49,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:49,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:51:49,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416050616] [2022-11-03 03:51:49,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:49,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:51:49,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:49,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:51:49,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:51:49,063 INFO L87 Difference]: Start difference. First operand 9528 states and 14786 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2022-11-03 03:51:51,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:54,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:51:56,888 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 03:51:58,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:58,277 INFO L93 Difference]: Finished difference Result 28139 states and 43783 transitions. [2022-11-03 03:51:58,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:51:58,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) Word has length 464 [2022-11-03 03:51:58,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:58,383 INFO L225 Difference]: With dead ends: 28139 [2022-11-03 03:51:58,383 INFO L226 Difference]: Without dead ends: 18684 [2022-11-03 03:51:58,461 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 03:51:58,462 INFO L413 NwaCegarLoop]: 4669 mSDtfsCounter, 3603 mSDsluCounter, 3784 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3610 SdHoareTripleChecker+Valid, 8135 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:58,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3610 Valid, 8135 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 756 Invalid, 2 Unknown, 0 Unchecked, 7.5s Time] [2022-11-03 03:51:58,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18684 states. [2022-11-03 03:52:00,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18684 to 18600. [2022-11-03 03:52:00,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18600 states, 8700 states have (on average 1.2475862068965518) internal successors, (10854), 8978 states have internal predecessors, (10854), 8929 states have call successors, (8929), 972 states have call predecessors, (8929), 968 states have return successors, (9187), 8761 states have call predecessors, (9187), 8925 states have call successors, (9187) [2022-11-03 03:52:00,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18600 states to 18600 states and 28970 transitions. [2022-11-03 03:52:00,625 INFO L78 Accepts]: Start accepts. Automaton has 18600 states and 28970 transitions. Word has length 464 [2022-11-03 03:52:00,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:52:00,626 INFO L495 AbstractCegarLoop]: Abstraction has 18600 states and 28970 transitions. [2022-11-03 03:52:00,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2022-11-03 03:52:00,627 INFO L276 IsEmpty]: Start isEmpty. Operand 18600 states and 28970 transitions. [2022-11-03 03:52:00,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2022-11-03 03:52:00,645 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:52:00,645 INFO L195 NwaCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:52:00,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 03:52:00,646 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 03:52:00,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:52:00,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1180869103, now seen corresponding path program 1 times [2022-11-03 03:52:00,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:52:00,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904724107] [2022-11-03 03:52:00,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:00,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:52:00,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:01,110 INFO L134 CoverageAnalysis]: Checked inductivity of 5138 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5138 trivial. 0 not checked. [2022-11-03 03:52:01,110 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:52:01,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904724107] [2022-11-03 03:52:01,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904724107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:52:01,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:52:01,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:52:01,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420921543] [2022-11-03 03:52:01,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:52:01,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:52:01,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:52:01,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:52:01,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:52:01,113 INFO L87 Difference]: Start difference. First operand 18600 states and 28970 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2022-11-03 03:52:03,319 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 03:52:06,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:52:11,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:52:11,024 INFO L93 Difference]: Finished difference Result 55087 states and 85981 transitions. [2022-11-03 03:52:11,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:52:11,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) Word has length 461 [2022-11-03 03:52:11,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:52:11,319 INFO L225 Difference]: With dead ends: 55087 [2022-11-03 03:52:11,320 INFO L226 Difference]: Without dead ends: 36560 [2022-11-03 03:52:11,479 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 03:52:11,480 INFO L413 NwaCegarLoop]: 4669 mSDtfsCounter, 3606 mSDsluCounter, 3784 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3613 SdHoareTripleChecker+Valid, 8135 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:52:11,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3613 Valid, 8135 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 756 Invalid, 2 Unknown, 0 Unchecked, 6.5s Time] [2022-11-03 03:52:11,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36560 states. [2022-11-03 03:52:15,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36560 to 36472. [2022-11-03 03:52:15,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36472 states, 16992 states have (on average 1.2416431261770244) internal successors, (21098), 17546 states have internal predecessors, (21098), 17561 states have call successors, (17561), 1924 states have call predecessors, (17561), 1916 states have return successors, (18269), 17225 states have call predecessors, (18269), 17557 states have call successors, (18269) [2022-11-03 03:52:15,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36472 states to 36472 states and 56928 transitions. [2022-11-03 03:52:15,485 INFO L78 Accepts]: Start accepts. Automaton has 36472 states and 56928 transitions. Word has length 461 [2022-11-03 03:52:15,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:52:15,486 INFO L495 AbstractCegarLoop]: Abstraction has 36472 states and 56928 transitions. [2022-11-03 03:52:15,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2022-11-03 03:52:15,487 INFO L276 IsEmpty]: Start isEmpty. Operand 36472 states and 56928 transitions. [2022-11-03 03:52:15,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2022-11-03 03:52:15,509 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:52:15,509 INFO L195 NwaCegarLoop]: trace histogram [38, 37, 37, 37, 37, 37, 37, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:52:15,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 03:52:15,510 INFO L420 AbstractCegarLoop]: === Iteration 13 === 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 03:52:15,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:52:15,511 INFO L85 PathProgramCache]: Analyzing trace with hash 278718020, now seen corresponding path program 1 times [2022-11-03 03:52:15,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:52:15,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526419438] [2022-11-03 03:52:15,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:15,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:52:15,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:16,335 INFO L134 CoverageAnalysis]: Checked inductivity of 5430 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5430 trivial. 0 not checked. [2022-11-03 03:52:16,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:52:16,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526419438] [2022-11-03 03:52:16,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526419438] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:52:16,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:52:16,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:52:16,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074954388] [2022-11-03 03:52:16,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:52:16,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:52:16,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:52:16,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:52:16,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:52:16,338 INFO L87 Difference]: Start difference. First operand 36472 states and 56928 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2022-11-03 03:52:20,472 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 03:52:24,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:52:28,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:52:28,672 INFO L93 Difference]: Finished difference Result 75362 states and 117536 transitions. [2022-11-03 03:52:28,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:52:28,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) Word has length 485 [2022-11-03 03:52:28,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:52:28,915 INFO L225 Difference]: With dead ends: 75362 [2022-11-03 03:52:28,915 INFO L226 Difference]: Without dead ends: 38963 [2022-11-03 03:52:29,137 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 03:52:29,138 INFO L413 NwaCegarLoop]: 5369 mSDtfsCounter, 3371 mSDsluCounter, 3806 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3376 SdHoareTripleChecker+Valid, 8846 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:52:29,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3376 Valid, 8846 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 819 Invalid, 2 Unknown, 0 Unchecked, 8.2s Time] [2022-11-03 03:52:29,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38963 states. [2022-11-03 03:52:33,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38963 to 38887. [2022-11-03 03:52:33,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38887 states, 17832 states have (on average 1.2307649170031405) internal successors, (21947), 18474 states have internal predecessors, (21947), 18939 states have call successors, (18939), 2130 states have call predecessors, (18939), 2113 states have return successors, (19605), 18524 states have call predecessors, (19605), 18935 states have call successors, (19605) [2022-11-03 03:52:33,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38887 states to 38887 states and 60491 transitions. [2022-11-03 03:52:33,492 INFO L78 Accepts]: Start accepts. Automaton has 38887 states and 60491 transitions. Word has length 485 [2022-11-03 03:52:33,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:52:33,493 INFO L495 AbstractCegarLoop]: Abstraction has 38887 states and 60491 transitions. [2022-11-03 03:52:33,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2022-11-03 03:52:33,494 INFO L276 IsEmpty]: Start isEmpty. Operand 38887 states and 60491 transitions. [2022-11-03 03:52:33,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2022-11-03 03:52:33,511 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:52:33,511 INFO L195 NwaCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:52:33,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 03:52:33,511 INFO L420 AbstractCegarLoop]: === Iteration 14 === 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 03:52:33,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:52:33,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1637088479, now seen corresponding path program 1 times [2022-11-03 03:52:33,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:52:33,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291380590] [2022-11-03 03:52:33,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:33,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:52:33,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:34,066 INFO L134 CoverageAnalysis]: Checked inductivity of 5138 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5138 trivial. 0 not checked. [2022-11-03 03:52:34,066 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:52:34,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291380590] [2022-11-03 03:52:34,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291380590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:52:34,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:52:34,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:52:34,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41745353] [2022-11-03 03:52:34,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:52:34,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:52:34,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:52:34,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:52:34,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:52:34,069 INFO L87 Difference]: Start difference. First operand 38887 states and 60491 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2022-11-03 03:52:36,276 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 03:52:39,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 03:52:48,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:52:48,332 INFO L93 Difference]: Finished difference Result 111406 states and 173563 transitions. [2022-11-03 03:52:48,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:52:48,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) Word has length 463 [2022-11-03 03:52:48,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:52:48,954 INFO L225 Difference]: With dead ends: 111406 [2022-11-03 03:52:48,955 INFO L226 Difference]: Without dead ends: 72592 [2022-11-03 03:52:49,145 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 03:52:49,146 INFO L413 NwaCegarLoop]: 4671 mSDtfsCounter, 3606 mSDsluCounter, 3784 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3613 SdHoareTripleChecker+Valid, 8137 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:52:49,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3613 Valid, 8137 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 757 Invalid, 2 Unknown, 0 Unchecked, 7.3s Time] [2022-11-03 03:52:49,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72592 states.