./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 b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898d6766-9140-45a2-a00c-fcd2ae46597b/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898d6766-9140-45a2-a00c-fcd2ae46597b/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898d6766-9140-45a2-a00c-fcd2ae46597b/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898d6766-9140-45a2-a00c-fcd2ae46597b/bin/utaipan-g80aRyZoba/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_898d6766-9140-45a2-a00c-fcd2ae46597b/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898d6766-9140-45a2-a00c-fcd2ae46597b/bin/utaipan-g80aRyZoba --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-b5237d8 [2022-11-22 01:50:52,893 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:50:52,895 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:50:52,926 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:50:52,930 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:50:52,933 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:50:52,937 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:50:52,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:50:52,948 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:50:52,951 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:50:52,952 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:50:52,955 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:50:52,956 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:50:52,961 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:50:52,963 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:50:52,966 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:50:52,968 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:50:52,970 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:50:52,972 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:50:52,973 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:50:52,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:50:52,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:50:52,982 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:50:52,983 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:50:52,989 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:50:52,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:50:52,994 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:50:52,995 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:50:52,996 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:50:52,999 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:50:53,001 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:50:53,002 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:50:53,003 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:50:53,005 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:50:53,007 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:50:53,008 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:50:53,008 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:50:53,009 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:50:53,009 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:50:53,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:50:53,011 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:50:53,012 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898d6766-9140-45a2-a00c-fcd2ae46597b/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 01:50:53,048 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:50:53,049 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:50:53,049 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:50:53,050 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:50:53,050 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:50:53,051 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:50:53,051 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:50:53,051 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:50:53,051 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:50:53,052 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:50:53,053 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:50:53,053 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:50:53,053 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:50:53,054 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:50:53,054 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:50:53,054 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:50:53,054 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:50:53,055 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:50:53,055 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:50:53,056 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:50:53,056 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:50:53,056 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:50:53,056 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:50:53,057 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:50:53,057 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:50:53,057 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:50:53,058 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:50:53,058 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:50:53,058 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:50:53,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:50:53,059 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:50:53,059 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:50:53,059 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:50:53,060 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:50:53,060 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:50:53,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:50:53,060 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:50:53,061 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:50:53,061 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_898d6766-9140-45a2-a00c-fcd2ae46597b/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898d6766-9140-45a2-a00c-fcd2ae46597b/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a5abe7d84ebfba3a3d05a8884a5cfb8bfd1e0698553d38fcfc4a2d2724f4159 [2022-11-22 01:50:53,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:50:53,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:50:53,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:50:53,366 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:50:53,367 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:50:53,368 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898d6766-9140-45a2-a00c-fcd2ae46597b/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i [2022-11-22 01:50:56,361 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:50:57,144 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:50:57,145 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898d6766-9140-45a2-a00c-fcd2ae46597b/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i [2022-11-22 01:50:57,212 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898d6766-9140-45a2-a00c-fcd2ae46597b/bin/utaipan-g80aRyZoba/data/cd5a246e1/1363d9fac49e4888bdabe0d7aaa94ed4/FLAG5ab64af0d [2022-11-22 01:50:57,227 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898d6766-9140-45a2-a00c-fcd2ae46597b/bin/utaipan-g80aRyZoba/data/cd5a246e1/1363d9fac49e4888bdabe0d7aaa94ed4 [2022-11-22 01:50:57,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:50:57,231 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:50:57,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:50:57,233 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:50:57,236 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:50:57,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:50:57" (1/1) ... [2022-11-22 01:50:57,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@741f74eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:50:57, skipping insertion in model container [2022-11-22 01:50:57,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:50:57" (1/1) ... [2022-11-22 01:50:57,247 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:50:57,496 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:51:01,345 WARN L237 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_898d6766-9140-45a2-a00c-fcd2ae46597b/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i[459471,459484] [2022-11-22 01:51:01,353 WARN L237 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_898d6766-9140-45a2-a00c-fcd2ae46597b/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i[459640,459653] [2022-11-22 01:51:01,353 WARN L237 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_898d6766-9140-45a2-a00c-fcd2ae46597b/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i[459807,459820] [2022-11-22 01:51:01,354 WARN L237 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_898d6766-9140-45a2-a00c-fcd2ae46597b/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i[459975,459988] [2022-11-22 01:51:01,456 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:51:01,531 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:51:02,022 WARN L237 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_898d6766-9140-45a2-a00c-fcd2ae46597b/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i[459471,459484] [2022-11-22 01:51:02,023 WARN L237 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_898d6766-9140-45a2-a00c-fcd2ae46597b/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i[459640,459653] [2022-11-22 01:51:02,024 WARN L237 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_898d6766-9140-45a2-a00c-fcd2ae46597b/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i[459807,459820] [2022-11-22 01:51:02,024 WARN L237 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_898d6766-9140-45a2-a00c-fcd2ae46597b/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i[459975,459988] [2022-11-22 01:51:02,038 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:51:02,284 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:51:02,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:02 WrapperNode [2022-11-22 01:51:02,285 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:51:02,286 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:51:02,286 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:51:02,286 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:51:02,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:02" (1/1) ... [2022-11-22 01:51:02,398 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:02" (1/1) ... [2022-11-22 01:51:02,666 INFO L138 Inliner]: procedures = 522, calls = 3821, calls flagged for inlining = 276, calls inlined = 260, statements flattened = 6768 [2022-11-22 01:51:02,666 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:51:02,667 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:51:02,668 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:51:02,668 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:51:02,678 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:02" (1/1) ... [2022-11-22 01:51:02,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:02" (1/1) ... [2022-11-22 01:51:02,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:02" (1/1) ... [2022-11-22 01:51:02,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:02" (1/1) ... [2022-11-22 01:51:03,027 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:02" (1/1) ... [2022-11-22 01:51:03,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:02" (1/1) ... [2022-11-22 01:51:03,114 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:02" (1/1) ... [2022-11-22 01:51:03,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:02" (1/1) ... [2022-11-22 01:51:03,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:51:03,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:51:03,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:51:03,175 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:51:03,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:02" (1/1) ... [2022-11-22 01:51:03,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:51:03,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898d6766-9140-45a2-a00c-fcd2ae46597b/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:51:03,210 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898d6766-9140-45a2-a00c-fcd2ae46597b/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:51:03,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_898d6766-9140-45a2-a00c-fcd2ae46597b/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:51:03,254 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_ioread8 [2022-11-22 01:51:03,254 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_ioread8 [2022-11-22 01:51:03,255 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_frequency_to_channel [2022-11-22 01:51:03,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_frequency_to_channel [2022-11-22 01:51:03,255 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_free_tx_ring [2022-11-22 01:51:03,255 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_free_tx_ring [2022-11-22 01:51:03,255 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_iowrite8 [2022-11-22 01:51:03,255 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_iowrite8 [2022-11-22 01:51:03,256 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-22 01:51:03,256 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-22 01:51:03,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-22 01:51:03,256 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-22 01:51:03,256 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 01:51:03,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 01:51:03,257 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_init [2022-11-22 01:51:03,257 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_init [2022-11-22 01:51:03,257 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_calc_rssi [2022-11-22 01:51:03,257 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_calc_rssi [2022-11-22 01:51:03,258 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 01:51:03,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 01:51:03,259 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-22 01:51:03,259 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-22 01:51:03,260 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-22 01:51:03,260 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-22 01:51:03,260 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-22 01:51:03,260 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-22 01:51:03,260 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_write_phy_antenna [2022-11-22 01:51:03,260 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_write_phy_antenna [2022-11-22 01:51:03,261 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_init [2022-11-22 01:51:03,261 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_init [2022-11-22 01:51:03,261 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_ioread32 [2022-11-22 01:51:03,261 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_ioread32 [2022-11-22 01:51:03,261 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-22 01:51:03,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-22 01:51:03,262 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_free_rx_ring [2022-11-22 01:51:03,262 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_free_rx_ring [2022-11-22 01:51:03,262 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_bss_info_changed [2022-11-22 01:51:03,262 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_bss_info_changed [2022-11-22 01:51:03,262 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_calc_rssi [2022-11-22 01:51:03,262 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_calc_rssi [2022-11-22 01:51:03,262 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-22 01:51:03,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-22 01:51:03,263 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-22 01:51:03,264 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-22 01:51:03,264 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_rtl8180_driver_exit_14_2 [2022-11-22 01:51:03,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_rtl8180_driver_exit_14_2 [2022-11-22 01:51:03,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:51:03,264 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225z2_rf_set_tx_power [2022-11-22 01:51:03,264 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225z2_rf_set_tx_power [2022-11-22 01:51:03,265 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_ioread16 [2022-11-22 01:51:03,265 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_ioread16 [2022-11-22 01:51:03,265 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_set_anaparam [2022-11-22 01:51:03,265 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_set_anaparam [2022-11-22 01:51:03,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-22 01:51:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_get_tx_rate [2022-11-22 01:51:03,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_get_tx_rate [2022-11-22 01:51:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_conf_erp [2022-11-22 01:51:03,266 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_conf_erp [2022-11-22 01:51:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-22 01:51:03,266 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-22 01:51:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-22 01:51:03,267 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-22 01:51:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_stop [2022-11-22 01:51:03,267 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_stop [2022-11-22 01:51:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 01:51:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-22 01:51:03,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-22 01:51:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_stop [2022-11-22 01:51:03,268 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_stop [2022-11-22 01:51:03,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 01:51:03,269 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-22 01:51:03,269 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-22 01:51:03,269 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_get_tsf [2022-11-22 01:51:03,270 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_get_tsf [2022-11-22 01:51:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-22 01:51:03,270 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-22 01:51:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-22 01:51:03,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-22 01:51:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-22 01:51:03,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-22 01:51:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-22 01:51:03,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-22 01:51:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2022-11-22 01:51:03,272 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2022-11-22 01:51:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_add_interface [2022-11-22 01:51:03,273 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_add_interface [2022-11-22 01:51:03,273 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_write_phy_antenna [2022-11-22 01:51:03,273 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_write_phy_antenna [2022-11-22 01:51:03,273 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-22 01:51:03,273 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-22 01:51:03,274 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-22 01:51:03,274 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-22 01:51:03,274 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_set_channel [2022-11-22 01:51:03,274 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_set_channel [2022-11-22 01:51:03,275 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_set_tx_power [2022-11-22 01:51:03,275 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_set_tx_power [2022-11-22 01:51:03,275 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_set_channel [2022-11-22 01:51:03,275 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_set_channel [2022-11-22 01:51:03,275 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 01:51:03,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 01:51:03,275 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2022-11-22 01:51:03,276 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2022-11-22 01:51:03,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 01:51:03,276 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-22 01:51:03,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-22 01:51:03,280 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-22 01:51:03,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-22 01:51:03,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:51:03,281 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-22 01:51:03,281 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-22 01:51:03,282 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_free_hw [2022-11-22 01:51:03,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_free_hw [2022-11-22 01:51:03,283 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_write_phy_cck [2022-11-22 01:51:03,283 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_write_phy_cck [2022-11-22 01:51:03,290 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-22 01:51:03,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-22 01:51:03,290 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-22 01:51:03,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-22 01:51:03,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 01:51:03,291 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 01:51:03,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 01:51:03,292 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-22 01:51:03,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-22 01:51:03,292 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_get_rts_cts_rate [2022-11-22 01:51:03,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_get_rts_cts_rate [2022-11-22 01:51:03,292 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_start [2022-11-22 01:51:03,292 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_start [2022-11-22 01:51:03,293 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_set_channel [2022-11-22 01:51:03,293 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_set_channel [2022-11-22 01:51:03,293 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-22 01:51:03,293 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-22 01:51:03,293 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_resume [2022-11-22 01:51:03,293 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_resume [2022-11-22 01:51:03,293 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_write_phy_ofdm [2022-11-22 01:51:03,294 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_write_phy_ofdm [2022-11-22 01:51:03,294 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_rtl8180_priv [2022-11-22 01:51:03,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_rtl8180_priv [2022-11-22 01:51:03,294 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_calc_rssi [2022-11-22 01:51:03,294 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_calc_rssi [2022-11-22 01:51:03,294 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_write_phy [2022-11-22 01:51:03,294 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_write_phy [2022-11-22 01:51:03,295 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2022-11-22 01:51:03,295 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2022-11-22 01:51:03,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:51:03,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:51:03,295 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-22 01:51:03,295 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-22 01:51:03,295 INFO L130 BoogieDeclarations]: Found specification of procedure write_sa2400 [2022-11-22 01:51:03,296 INFO L138 BoogieDeclarations]: Found implementation of procedure write_sa2400 [2022-11-22 01:51:03,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-22 01:51:03,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-22 01:51:03,296 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 01:51:03,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 01:51:03,296 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_stop [2022-11-22 01:51:03,296 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_stop [2022-11-22 01:51:03,296 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 01:51:03,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 01:51:03,297 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ieee80211_free_hw [2022-11-22 01:51:03,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ieee80211_free_hw [2022-11-22 01:51:03,297 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_init [2022-11-22 01:51:03,297 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_init [2022-11-22 01:51:03,297 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225z2_rf_init [2022-11-22 01:51:03,297 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225z2_rf_init [2022-11-22 01:51:03,298 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_remove [2022-11-22 01:51:03,298 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_remove [2022-11-22 01:51:03,298 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-11-22 01:51:03,298 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-11-22 01:51:03,298 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-22 01:51:03,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-22 01:51:03,298 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-22 01:51:03,298 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-22 01:51:03,299 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_stop [2022-11-22 01:51:03,299 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_stop [2022-11-22 01:51:03,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-22 01:51:03,299 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-22 01:51:03,299 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-22 01:51:03,299 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-22 01:51:03,299 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_write [2022-11-22 01:51:03,300 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_write [2022-11-22 01:51:03,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:51:03,300 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_write_phy_antenna [2022-11-22 01:51:03,300 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_write_phy_antenna [2022-11-22 01:51:03,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 01:51:03,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 01:51:03,300 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2022-11-22 01:51:03,301 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2022-11-22 01:51:03,301 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-22 01:51:03,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-22 01:51:03,301 INFO L130 BoogieDeclarations]: Found specification of procedure write_max2820 [2022-11-22 01:51:03,301 INFO L138 BoogieDeclarations]: Found implementation of procedure write_max2820 [2022-11-22 01:51:03,301 INFO L130 BoogieDeclarations]: Found specification of procedure write_grf5101 [2022-11-22 01:51:03,301 INFO L138 BoogieDeclarations]: Found implementation of procedure write_grf5101 [2022-11-22 01:51:03,301 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_remove_interface [2022-11-22 01:51:03,302 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_remove_interface [2022-11-22 01:51:03,302 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_61 [2022-11-22 01:51:03,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_61 [2022-11-22 01:51:03,302 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2022-11-22 01:51:03,302 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2022-11-22 01:51:03,302 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_read [2022-11-22 01:51:03,302 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_read [2022-11-22 01:51:03,303 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_set_channel [2022-11-22 01:51:03,303 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_set_channel [2022-11-22 01:51:03,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 01:51:03,303 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_93cx6_read [2022-11-22 01:51:03,303 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_93cx6_read [2022-11-22 01:51:03,303 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2022-11-22 01:51:03,303 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2022-11-22 01:51:03,304 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 01:51:03,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 01:51:03,304 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_handle_tx [2022-11-22 01:51:03,304 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_handle_tx [2022-11-22 01:51:03,304 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_configure_filter [2022-11-22 01:51:03,304 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_configure_filter [2022-11-22 01:51:03,304 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_rtl8180_priv [2022-11-22 01:51:03,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_rtl8180_priv [2022-11-22 01:51:03,305 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2022-11-22 01:51:03,305 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2022-11-22 01:51:03,305 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_len [2022-11-22 01:51:03,305 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_len [2022-11-22 01:51:03,305 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-22 01:51:03,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-22 01:51:03,305 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_prepare_multicast [2022-11-22 01:51:03,306 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_prepare_multicast [2022-11-22 01:51:03,306 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-22 01:51:03,306 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-22 01:51:03,306 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_iowrite32 [2022-11-22 01:51:03,306 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_iowrite32 [2022-11-22 01:51:03,306 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_93cx6_multiread [2022-11-22 01:51:03,306 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_93cx6_multiread [2022-11-22 01:51:03,306 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2022-11-22 01:51:03,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:51:03,308 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-11-22 01:51:03,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-11-22 01:51:03,312 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_config [2022-11-22 01:51:03,312 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_config [2022-11-22 01:51:03,312 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-22 01:51:03,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-22 01:51:03,312 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_tx [2022-11-22 01:51:03,312 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_tx [2022-11-22 01:51:03,313 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_iowrite16 [2022-11-22 01:51:03,313 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_iowrite16 [2022-11-22 01:51:03,314 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_CB [2022-11-22 01:51:03,314 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_CB [2022-11-22 01:51:04,632 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:51:04,636 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:51:04,925 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 01:51:15,324 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-22 01:51:15,556 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:51:17,543 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:51:17,543 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-22 01:51:17,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:51:17 BoogieIcfgContainer [2022-11-22 01:51:17,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:51:17,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:51:17,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:51:17,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:51:17,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:50:57" (1/3) ... [2022-11-22 01:51:17,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47fd652a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:51:17, skipping insertion in model container [2022-11-22 01:51:17,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:51:02" (2/3) ... [2022-11-22 01:51:17,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47fd652a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:51:17, skipping insertion in model container [2022-11-22 01:51:17,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:51:17" (3/3) ... [2022-11-22 01:51:17,568 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i [2022-11-22 01:51:17,589 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:51:17,589 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-22 01:51:17,729 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:51:17,734 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;@13d79243, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:51:17,734 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-22 01:51:17,746 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) [2022-11-22 01:51:17,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2022-11-22 01:51:17,782 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:51:17,783 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] [2022-11-22 01:51:17,783 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)] === [2022-11-22 01:51:17,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:51:17,789 INFO L85 PathProgramCache]: Analyzing trace with hash 712637411, now seen corresponding path program 1 times [2022-11-22 01:51:17,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:51:17,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160301582] [2022-11-22 01:51:17,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:51:17,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:51:18,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:51:19,269 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5112 trivial. 0 not checked. [2022-11-22 01:51:19,270 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:51:19,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160301582] [2022-11-22 01:51:19,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160301582] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:51:19,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:51:19,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:51:19,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141684930] [2022-11-22 01:51:19,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:51:19,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:51:19,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:51:19,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:51:19,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:51:19,343 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) [2022-11-22 01:51:21,654 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 [] [2022-11-22 01:51:25,448 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 [] [2022-11-22 01:51:26,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:51:26,580 INFO L93 Difference]: Finished difference Result 7260 states and 11399 transitions. [2022-11-22 01:51:26,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:51:26,583 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 [2022-11-22 01:51:26,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:51:26,640 INFO L225 Difference]: With dead ends: 7260 [2022-11-22 01:51:26,641 INFO L226 Difference]: Without dead ends: 4821 [2022-11-22 01:51:26,666 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 [2022-11-22 01:51:26,670 INFO L413 NwaCegarLoop]: 4673 mSDtfsCounter, 3667 mSDsluCounter, 3507 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3676 SdHoareTripleChecker+Valid, 8180 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-22 01:51:26,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3676 Valid, 8180 Invalid, 705 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 696 Invalid, 2 Unknown, 0 Unchecked, 6.7s Time] [2022-11-22 01:51:26,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4821 states. [2022-11-22 01:51:27,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4821 to 4815. [2022-11-22 01:51:27,238 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) [2022-11-22 01:51:27,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4815 states to 4815 states and 7505 transitions. [2022-11-22 01:51:27,300 INFO L78 Accepts]: Start accepts. Automaton has 4815 states and 7505 transitions. Word has length 381 [2022-11-22 01:51:27,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:51:27,302 INFO L495 AbstractCegarLoop]: Abstraction has 4815 states and 7505 transitions. [2022-11-22 01:51:27,303 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) [2022-11-22 01:51:27,303 INFO L276 IsEmpty]: Start isEmpty. Operand 4815 states and 7505 transitions. [2022-11-22 01:51:27,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2022-11-22 01:51:27,314 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:51:27,314 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] [2022-11-22 01:51:27,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:51:27,315 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)] === [2022-11-22 01:51:27,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:51:27,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1313352518, now seen corresponding path program 1 times [2022-11-22 01:51:27,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:51:27,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428963012] [2022-11-22 01:51:27,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:51:27,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:51:27,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:51:28,154 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5112 trivial. 0 not checked. [2022-11-22 01:51:28,155 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:51:28,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428963012] [2022-11-22 01:51:28,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428963012] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:51:28,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:51:28,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:51:28,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150173974] [2022-11-22 01:51:28,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:51:28,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:51:28,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:51:28,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:51:28,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:51:28,161 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) [2022-11-22 01:51:30,337 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 [] [2022-11-22 01:51:33,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 01:51:34,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:51:34,918 INFO L93 Difference]: Finished difference Result 14067 states and 22008 transitions. [2022-11-22 01:51:34,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:51:34,919 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 [2022-11-22 01:51:34,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:51:35,009 INFO L225 Difference]: With dead ends: 14067 [2022-11-22 01:51:35,010 INFO L226 Difference]: Without dead ends: 9325 [2022-11-22 01:51:35,051 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 [2022-11-22 01:51:35,052 INFO L413 NwaCegarLoop]: 4672 mSDtfsCounter, 3577 mSDsluCounter, 3510 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3586 SdHoareTripleChecker+Valid, 8182 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:51:35,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3586 Valid, 8182 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 685 Invalid, 2 Unknown, 0 Unchecked, 6.1s Time] [2022-11-22 01:51:35,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9325 states. [2022-11-22 01:51:35,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9325 to 9296. [2022-11-22 01:51:36,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9296 states, 4346 states have (on average 1.257017947537966) internal successors, (5463), 4485 states have internal predecessors, (5463), 4518 states have call successors, (4518), 432 states have call predecessors, (4518), 429 states have return successors, (4587), 4434 states have call predecessors, (4587), 4514 states have call successors, (4587) [2022-11-22 01:51:36,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9296 states to 9296 states and 14568 transitions. [2022-11-22 01:51:36,107 INFO L78 Accepts]: Start accepts. Automaton has 9296 states and 14568 transitions. Word has length 383 [2022-11-22 01:51:36,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:51:36,113 INFO L495 AbstractCegarLoop]: Abstraction has 9296 states and 14568 transitions. [2022-11-22 01:51:36,114 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) [2022-11-22 01:51:36,114 INFO L276 IsEmpty]: Start isEmpty. Operand 9296 states and 14568 transitions. [2022-11-22 01:51:36,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2022-11-22 01:51:36,136 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:51:36,137 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] [2022-11-22 01:51:36,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:51:36,137 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)] === [2022-11-22 01:51:36,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:51:36,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1969816813, now seen corresponding path program 1 times [2022-11-22 01:51:36,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:51:36,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233147669] [2022-11-22 01:51:36,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:51:36,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:51:36,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:51:37,561 INFO L134 CoverageAnalysis]: Checked inductivity of 5367 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5367 trivial. 0 not checked. [2022-11-22 01:51:37,561 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:51:37,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233147669] [2022-11-22 01:51:37,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233147669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:51:37,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:51:37,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:51:37,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977958000] [2022-11-22 01:51:37,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:51:37,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:51:37,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:51:37,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:51:37,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:51:37,565 INFO L87 Difference]: Start difference. First operand 9296 states and 14568 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) [2022-11-22 01:51:39,790 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 [] [2022-11-22 01:51:43,464 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 [] [2022-11-22 01:51:44,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:51:44,641 INFO L93 Difference]: Finished difference Result 9327 states and 14600 transitions. [2022-11-22 01:51:44,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:51:44,642 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 [2022-11-22 01:51:44,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:51:44,738 INFO L225 Difference]: With dead ends: 9327 [2022-11-22 01:51:44,738 INFO L226 Difference]: Without dead ends: 9325 [2022-11-22 01:51:44,747 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 [2022-11-22 01:51:44,751 INFO L413 NwaCegarLoop]: 3525 mSDtfsCounter, 3735 mSDsluCounter, 7068 mSDsCounter, 0 mSdLazyCounter, 1050 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3755 SdHoareTripleChecker+Valid, 10593 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1050 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-22 01:51:44,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3755 Valid, 10593 Invalid, 1053 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1050 Invalid, 2 Unknown, 0 Unchecked, 6.5s Time] [2022-11-22 01:51:44,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9325 states. [2022-11-22 01:51:45,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9325 to 9323. [2022-11-22 01:51:45,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9323 states, 4361 states have (on average 1.2563632194450813) internal successors, (5479), 4502 states have internal predecessors, (5479), 4520 states have call successors, (4520), 440 states have call predecessors, (4520), 439 states have return successors, (4598), 4436 states have call predecessors, (4598), 4516 states have call successors, (4598) [2022-11-22 01:51:45,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9323 states to 9323 states and 14597 transitions. [2022-11-22 01:51:45,813 INFO L78 Accepts]: Start accepts. Automaton has 9323 states and 14597 transitions. Word has length 423 [2022-11-22 01:51:45,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:51:45,814 INFO L495 AbstractCegarLoop]: Abstraction has 9323 states and 14597 transitions. [2022-11-22 01:51:45,814 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) [2022-11-22 01:51:45,814 INFO L276 IsEmpty]: Start isEmpty. Operand 9323 states and 14597 transitions. [2022-11-22 01:51:45,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2022-11-22 01:51:45,831 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:51:45,831 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] [2022-11-22 01:51:45,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:51:45,832 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)] === [2022-11-22 01:51:45,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:51:45,832 INFO L85 PathProgramCache]: Analyzing trace with hash 2109781352, now seen corresponding path program 1 times [2022-11-22 01:51:45,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:51:45,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629206835] [2022-11-22 01:51:45,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:51:45,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:51:46,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:51:46,988 INFO L134 CoverageAnalysis]: Checked inductivity of 5377 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5375 trivial. 0 not checked. [2022-11-22 01:51:46,988 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:51:46,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629206835] [2022-11-22 01:51:46,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629206835] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:51:46,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:51:46,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:51:46,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849780654] [2022-11-22 01:51:46,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:51:46,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:51:46,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:51:46,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:51:46,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:51:46,993 INFO L87 Difference]: Start difference. First operand 9323 states and 14597 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) [2022-11-22 01:51:48,741 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 [] [2022-11-22 01:51:54,104 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 [] [2022-11-22 01:51:55,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:51:55,171 INFO L93 Difference]: Finished difference Result 9333 states and 14604 transitions. [2022-11-22 01:51:55,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:51:55,171 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 [2022-11-22 01:51:55,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:51:55,234 INFO L225 Difference]: With dead ends: 9333 [2022-11-22 01:51:55,235 INFO L226 Difference]: Without dead ends: 9331 [2022-11-22 01:51:55,244 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 [2022-11-22 01:51:55,245 INFO L413 NwaCegarLoop]: 3528 mSDtfsCounter, 3742 mSDsluCounter, 7055 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3757 SdHoareTripleChecker+Valid, 10583 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:51:55,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3757 Valid, 10583 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1045 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2022-11-22 01:51:55,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9331 states. [2022-11-22 01:51:56,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9331 to 9329. [2022-11-22 01:51:56,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9329 states, 4365 states have (on average 1.2561282932416953) internal successors, (5483), 4506 states have internal predecessors, (5483), 4520 states have call successors, (4520), 442 states have call predecessors, (4520), 441 states have return successors, (4598), 4436 states have call predecessors, (4598), 4516 states have call successors, (4598) [2022-11-22 01:51:56,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9329 states to 9329 states and 14601 transitions. [2022-11-22 01:51:56,406 INFO L78 Accepts]: Start accepts. Automaton has 9329 states and 14601 transitions. Word has length 432 [2022-11-22 01:51:56,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:51:56,408 INFO L495 AbstractCegarLoop]: Abstraction has 9329 states and 14601 transitions. [2022-11-22 01:51:56,408 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) [2022-11-22 01:51:56,408 INFO L276 IsEmpty]: Start isEmpty. Operand 9329 states and 14601 transitions. [2022-11-22 01:51:56,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2022-11-22 01:51:56,429 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:51:56,429 INFO L195 NwaCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:51:56,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 01:51:56,430 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)] === [2022-11-22 01:51:56,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:51:56,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1057011155, now seen corresponding path program 1 times [2022-11-22 01:51:56,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:51:56,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513656655] [2022-11-22 01:51:56,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:51:56,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:51:56,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:51:57,520 INFO L134 CoverageAnalysis]: Checked inductivity of 5375 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5371 trivial. 0 not checked. [2022-11-22 01:51:57,521 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:51:57,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513656655] [2022-11-22 01:51:57,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513656655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:51:57,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:51:57,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:51:57,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785564819] [2022-11-22 01:51:57,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:51:57,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:51:57,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:51:57,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:51:57,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:51:57,526 INFO L87 Difference]: Start difference. First operand 9329 states and 14601 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, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2022-11-22 01:51:59,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:52:01,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:52:04,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 01:52:06,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:52:06,014 INFO L93 Difference]: Finished difference Result 9337 states and 14607 transitions. [2022-11-22 01:52:06,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:52:06,015 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, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 433 [2022-11-22 01:52:06,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:52:06,076 INFO L225 Difference]: With dead ends: 9337 [2022-11-22 01:52:06,076 INFO L226 Difference]: Without dead ends: 9335 [2022-11-22 01:52:06,086 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 [2022-11-22 01:52:06,086 INFO L413 NwaCegarLoop]: 3528 mSDtfsCounter, 3743 mSDsluCounter, 7055 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3757 SdHoareTripleChecker+Valid, 10583 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-22 01:52:06,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3757 Valid, 10583 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1044 Invalid, 2 Unknown, 0 Unchecked, 7.9s Time] [2022-11-22 01:52:06,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9335 states. [2022-11-22 01:52:07,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9335 to 9333. [2022-11-22 01:52:07,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9333 states, 4368 states have (on average 1.255952380952381) internal successors, (5486), 4509 states have internal predecessors, (5486), 4520 states have call successors, (4520), 443 states have call predecessors, (4520), 442 states have return successors, (4598), 4436 states have call predecessors, (4598), 4516 states have call successors, (4598) [2022-11-22 01:52:07,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9333 states to 9333 states and 14604 transitions. [2022-11-22 01:52:07,139 INFO L78 Accepts]: Start accepts. Automaton has 9333 states and 14604 transitions. Word has length 433 [2022-11-22 01:52:07,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:52:07,140 INFO L495 AbstractCegarLoop]: Abstraction has 9333 states and 14604 transitions. [2022-11-22 01:52:07,140 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, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2022-11-22 01:52:07,140 INFO L276 IsEmpty]: Start isEmpty. Operand 9333 states and 14604 transitions. [2022-11-22 01:52:07,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2022-11-22 01:52:07,158 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:52:07,159 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] [2022-11-22 01:52:07,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 01:52:07,159 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)] === [2022-11-22 01:52:07,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:52:07,160 INFO L85 PathProgramCache]: Analyzing trace with hash 99176873, now seen corresponding path program 1 times [2022-11-22 01:52:07,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:52:07,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501511186] [2022-11-22 01:52:07,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:52:07,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:52:07,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:52:08,145 INFO L134 CoverageAnalysis]: Checked inductivity of 5385 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5379 trivial. 0 not checked. [2022-11-22 01:52:08,145 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:52:08,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501511186] [2022-11-22 01:52:08,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501511186] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:52:08,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:52:08,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:52:08,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716703956] [2022-11-22 01:52:08,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:52:08,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:52:08,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:52:08,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:52:08,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:52:08,149 INFO L87 Difference]: Start difference. First operand 9333 states and 14604 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) [2022-11-22 01:52:10,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:52:15,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 01:52:16,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:52:16,195 INFO L93 Difference]: Finished difference Result 9341 states and 14610 transitions. [2022-11-22 01:52:16,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:52:16,195 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 [2022-11-22 01:52:16,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:52:16,254 INFO L225 Difference]: With dead ends: 9341 [2022-11-22 01:52:16,254 INFO L226 Difference]: Without dead ends: 9339 [2022-11-22 01:52:16,263 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 [2022-11-22 01:52:16,264 INFO L413 NwaCegarLoop]: 3528 mSDtfsCounter, 3743 mSDsluCounter, 7055 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3756 SdHoareTripleChecker+Valid, 10583 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-22 01:52:16,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3756 Valid, 10583 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1044 Invalid, 2 Unknown, 0 Unchecked, 7.5s Time] [2022-11-22 01:52:16,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9339 states. [2022-11-22 01:52:17,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9339 to 9337. [2022-11-22 01:52:17,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9337 states, 4371 states have (on average 1.2557767101349806) internal successors, (5489), 4512 states have internal predecessors, (5489), 4520 states have call successors, (4520), 444 states have call predecessors, (4520), 443 states have return successors, (4598), 4436 states have call predecessors, (4598), 4516 states have call successors, (4598) [2022-11-22 01:52:17,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9337 states to 9337 states and 14607 transitions. [2022-11-22 01:52:17,333 INFO L78 Accepts]: Start accepts. Automaton has 9337 states and 14607 transitions. Word has length 438 [2022-11-22 01:52:17,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:52:17,334 INFO L495 AbstractCegarLoop]: Abstraction has 9337 states and 14607 transitions. [2022-11-22 01:52:17,334 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) [2022-11-22 01:52:17,334 INFO L276 IsEmpty]: Start isEmpty. Operand 9337 states and 14607 transitions. [2022-11-22 01:52:17,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2022-11-22 01:52:17,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:52:17,349 INFO L195 NwaCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:52:17,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 01:52:17,350 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)] === [2022-11-22 01:52:17,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:52:17,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1761838194, now seen corresponding path program 1 times [2022-11-22 01:52:17,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:52:17,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623102037] [2022-11-22 01:52:17,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:52:17,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:52:17,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:52:18,289 INFO L134 CoverageAnalysis]: Checked inductivity of 5407 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5399 trivial. 0 not checked. [2022-11-22 01:52:18,290 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:52:18,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623102037] [2022-11-22 01:52:18,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623102037] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:52:18,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:52:18,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:52:18,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681930301] [2022-11-22 01:52:18,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:52:18,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:52:18,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:52:18,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:52:18,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:52:18,292 INFO L87 Difference]: Start difference. First operand 9337 states and 14607 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) [2022-11-22 01:52:20,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:52:22,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:52:26,629 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 [] [2022-11-22 01:52:27,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:52:27,691 INFO L93 Difference]: Finished difference Result 9345 states and 14613 transitions. [2022-11-22 01:52:27,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:52:27,692 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 447 [2022-11-22 01:52:27,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:52:27,753 INFO L225 Difference]: With dead ends: 9345 [2022-11-22 01:52:27,754 INFO L226 Difference]: Without dead ends: 9343 [2022-11-22 01:52:27,764 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 [2022-11-22 01:52:27,766 INFO L413 NwaCegarLoop]: 3528 mSDtfsCounter, 3742 mSDsluCounter, 7055 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3754 SdHoareTripleChecker+Valid, 10583 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:52:27,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3754 Valid, 10583 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1044 Invalid, 2 Unknown, 0 Unchecked, 8.6s Time] [2022-11-22 01:52:27,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9343 states. [2022-11-22 01:52:28,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9343 to 9341. [2022-11-22 01:52:28,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9341 states, 4374 states have (on average 1.2556012802926384) internal successors, (5492), 4515 states have internal predecessors, (5492), 4520 states have call successors, (4520), 445 states have call predecessors, (4520), 444 states have return successors, (4598), 4436 states have call predecessors, (4598), 4516 states have call successors, (4598) [2022-11-22 01:52:28,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9341 states to 9341 states and 14610 transitions. [2022-11-22 01:52:28,757 INFO L78 Accepts]: Start accepts. Automaton has 9341 states and 14610 transitions. Word has length 447 [2022-11-22 01:52:28,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:52:28,758 INFO L495 AbstractCegarLoop]: Abstraction has 9341 states and 14610 transitions. [2022-11-22 01:52:28,758 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) [2022-11-22 01:52:28,758 INFO L276 IsEmpty]: Start isEmpty. Operand 9341 states and 14610 transitions. [2022-11-22 01:52:28,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2022-11-22 01:52:28,773 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:52:28,774 INFO L195 NwaCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:52:28,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 01:52:28,774 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)] === [2022-11-22 01:52:28,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:52:28,775 INFO L85 PathProgramCache]: Analyzing trace with hash 573465577, now seen corresponding path program 1 times [2022-11-22 01:52:28,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:52:28,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082636996] [2022-11-22 01:52:28,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:52:28,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:52:28,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:52:29,732 INFO L134 CoverageAnalysis]: Checked inductivity of 5417 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5407 trivial. 0 not checked. [2022-11-22 01:52:29,733 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:52:29,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082636996] [2022-11-22 01:52:29,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082636996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:52:29,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:52:29,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:52:29,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275510737] [2022-11-22 01:52:29,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:52:29,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:52:29,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:52:29,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:52:29,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:52:29,755 INFO L87 Difference]: Start difference. First operand 9341 states and 14610 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, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2022-11-22 01:52:32,809 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 [] [2022-11-22 01:52:36,932 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 [] [2022-11-22 01:52:38,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:52:38,045 INFO L93 Difference]: Finished difference Result 9349 states and 14616 transitions. [2022-11-22 01:52:38,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:52:38,046 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, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 448 [2022-11-22 01:52:38,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:52:38,091 INFO L225 Difference]: With dead ends: 9349 [2022-11-22 01:52:38,091 INFO L226 Difference]: Without dead ends: 9347 [2022-11-22 01:52:38,100 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 [2022-11-22 01:52:38,101 INFO L413 NwaCegarLoop]: 3528 mSDtfsCounter, 3743 mSDsluCounter, 7055 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3754 SdHoareTripleChecker+Valid, 10583 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:52:38,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3754 Valid, 10583 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1044 Invalid, 2 Unknown, 0 Unchecked, 7.6s Time] [2022-11-22 01:52:38,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9347 states. [2022-11-22 01:52:39,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9347 to 9345. [2022-11-22 01:52:39,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9345 states, 4377 states have (on average 1.2554260909298607) internal successors, (5495), 4518 states have internal predecessors, (5495), 4520 states have call successors, (4520), 446 states have call predecessors, (4520), 445 states have return successors, (4598), 4436 states have call predecessors, (4598), 4516 states have call successors, (4598) [2022-11-22 01:52:39,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9345 states to 9345 states and 14613 transitions. [2022-11-22 01:52:39,122 INFO L78 Accepts]: Start accepts. Automaton has 9345 states and 14613 transitions. Word has length 448 [2022-11-22 01:52:39,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:52:39,123 INFO L495 AbstractCegarLoop]: Abstraction has 9345 states and 14613 transitions. [2022-11-22 01:52:39,123 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, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2022-11-22 01:52:39,123 INFO L276 IsEmpty]: Start isEmpty. Operand 9345 states and 14613 transitions. [2022-11-22 01:52:39,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2022-11-22 01:52:39,141 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:52:39,141 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] [2022-11-22 01:52:39,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 01:52:39,142 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)] === [2022-11-22 01:52:39,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:52:39,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1712387186, now seen corresponding path program 1 times [2022-11-22 01:52:39,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:52:39,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045355877] [2022-11-22 01:52:39,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:52:39,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:52:39,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:52:40,166 INFO L134 CoverageAnalysis]: Checked inductivity of 5447 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 5435 trivial. 0 not checked. [2022-11-22 01:52:40,167 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:52:40,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045355877] [2022-11-22 01:52:40,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045355877] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:52:40,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:52:40,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:52:40,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369987911] [2022-11-22 01:52:40,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:52:40,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:52:40,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:52:40,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:52:40,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:52:40,170 INFO L87 Difference]: Start difference. First operand 9345 states and 14613 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) [2022-11-22 01:52:43,365 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 [] [2022-11-22 01:52:45,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:52:48,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 01:52:49,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:52:49,847 INFO L93 Difference]: Finished difference Result 9529 states and 14788 transitions. [2022-11-22 01:52:49,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:52:49,848 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 [2022-11-22 01:52:49,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:52:49,890 INFO L225 Difference]: With dead ends: 9529 [2022-11-22 01:52:49,890 INFO L226 Difference]: Without dead ends: 9527 [2022-11-22 01:52:49,898 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 [2022-11-22 01:52:49,898 INFO L413 NwaCegarLoop]: 3535 mSDtfsCounter, 3614 mSDsluCounter, 7228 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3619 SdHoareTripleChecker+Valid, 10763 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-22 01:52:49,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3619 Valid, 10763 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1078 Invalid, 2 Unknown, 0 Unchecked, 8.9s Time] [2022-11-22 01:52:49,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9527 states. [2022-11-22 01:52:50,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9527 to 9523. [2022-11-22 01:52:50,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9523 states, 4474 states have (on average 1.252123379526151) internal successors, (5602), 4615 states have internal predecessors, (5602), 4551 states have call successors, (4551), 496 states have call predecessors, (4551), 495 states have return successors, (4629), 4467 states have call predecessors, (4629), 4547 states have call successors, (4629) [2022-11-22 01:52:50,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9523 states to 9523 states and 14782 transitions. [2022-11-22 01:52:50,810 INFO L78 Accepts]: Start accepts. Automaton has 9523 states and 14782 transitions. Word has length 457 [2022-11-22 01:52:50,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:52:50,811 INFO L495 AbstractCegarLoop]: Abstraction has 9523 states and 14782 transitions. [2022-11-22 01:52:50,811 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) [2022-11-22 01:52:50,811 INFO L276 IsEmpty]: Start isEmpty. Operand 9523 states and 14782 transitions. [2022-11-22 01:52:50,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2022-11-22 01:52:50,828 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:52:50,828 INFO L195 NwaCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 8, 7, 7, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:52:50,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 01:52:50,829 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)] === [2022-11-22 01:52:50,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:52:50,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1738843112, now seen corresponding path program 1 times [2022-11-22 01:52:50,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:52:50,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445767795] [2022-11-22 01:52:50,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:52:50,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:52:50,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:52:51,846 INFO L134 CoverageAnalysis]: Checked inductivity of 5473 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5459 trivial. 0 not checked. [2022-11-22 01:52:51,846 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:52:51,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445767795] [2022-11-22 01:52:51,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445767795] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:52:51,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:52:51,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:52:51,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187960181] [2022-11-22 01:52:51,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:52:51,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:52:51,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:52:51,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:52:51,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:52:51,850 INFO L87 Difference]: Start difference. First operand 9523 states and 14782 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) [2022-11-22 01:52:54,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:52:58,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 01:52:59,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:52:59,378 INFO L93 Difference]: Finished difference Result 9531 states and 14788 transitions. [2022-11-22 01:52:59,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:52:59,378 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 462 [2022-11-22 01:52:59,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:52:59,430 INFO L225 Difference]: With dead ends: 9531 [2022-11-22 01:52:59,430 INFO L226 Difference]: Without dead ends: 9529 [2022-11-22 01:52:59,439 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 [2022-11-22 01:52:59,439 INFO L413 NwaCegarLoop]: 3529 mSDtfsCounter, 3741 mSDsluCounter, 7057 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3750 SdHoareTripleChecker+Valid, 10586 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-22 01:52:59,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3750 Valid, 10586 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1044 Invalid, 2 Unknown, 0 Unchecked, 6.8s Time] [2022-11-22 01:52:59,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9529 states. [2022-11-22 01:53:00,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9529 to 9527. [2022-11-22 01:53:00,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9527 states, 4477 states have (on average 1.2519544337726156) internal successors, (5605), 4618 states have internal predecessors, (5605), 4551 states have call successors, (4551), 497 states have call predecessors, (4551), 496 states have return successors, (4629), 4467 states have call predecessors, (4629), 4547 states have call successors, (4629) [2022-11-22 01:53:00,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9527 states to 9527 states and 14785 transitions. [2022-11-22 01:53:00,384 INFO L78 Accepts]: Start accepts. Automaton has 9527 states and 14785 transitions. Word has length 462 [2022-11-22 01:53:00,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:53:00,385 INFO L495 AbstractCegarLoop]: Abstraction has 9527 states and 14785 transitions. [2022-11-22 01:53:00,385 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) [2022-11-22 01:53:00,385 INFO L276 IsEmpty]: Start isEmpty. Operand 9527 states and 14785 transitions. [2022-11-22 01:53:00,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2022-11-22 01:53:00,402 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:53:00,403 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] [2022-11-22 01:53:00,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 01:53:00,404 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)] === [2022-11-22 01:53:00,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:53:00,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1801993048, now seen corresponding path program 1 times [2022-11-22 01:53:00,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:53:00,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071977563] [2022-11-22 01:53:00,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:53:00,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:53:00,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:53:00,974 INFO L134 CoverageAnalysis]: Checked inductivity of 5138 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5138 trivial. 0 not checked. [2022-11-22 01:53:00,975 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:53:00,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071977563] [2022-11-22 01:53:00,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071977563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:53:00,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:53:00,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:53:00,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263841270] [2022-11-22 01:53:00,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:53:00,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:53:00,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:53:00,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:53:00,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:53:00,977 INFO L87 Difference]: Start difference. First operand 9527 states and 14785 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2022-11-22 01:53:03,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:53:06,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 01:53:09,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:53:09,571 INFO L93 Difference]: Finished difference Result 28128 states and 43776 transitions. [2022-11-22 01:53:09,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:53:09,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 462 [2022-11-22 01:53:09,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:53:09,648 INFO L225 Difference]: With dead ends: 28128 [2022-11-22 01:53:09,648 INFO L226 Difference]: Without dead ends: 18674 [2022-11-22 01:53:09,727 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 [2022-11-22 01:53:09,727 INFO L413 NwaCegarLoop]: 4675 mSDtfsCounter, 3605 mSDsluCounter, 3472 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3612 SdHoareTripleChecker+Valid, 8147 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-22 01:53:09,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3612 Valid, 8147 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 745 Invalid, 2 Unknown, 0 Unchecked, 6.8s Time] [2022-11-22 01:53:09,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18674 states. [2022-11-22 01:53:11,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18674 to 18599. [2022-11-22 01:53:11,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18599 states, 8703 states have (on average 1.2475008617718029) internal successors, (10857), 8982 states have internal predecessors, (10857), 8925 states have call successors, (8925), 971 states have call predecessors, (8925), 968 states have return successors, (9191), 8757 states have call predecessors, (9191), 8921 states have call successors, (9191) [2022-11-22 01:53:11,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18599 states to 18599 states and 28973 transitions. [2022-11-22 01:53:11,745 INFO L78 Accepts]: Start accepts. Automaton has 18599 states and 28973 transitions. Word has length 462 [2022-11-22 01:53:11,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:53:11,746 INFO L495 AbstractCegarLoop]: Abstraction has 18599 states and 28973 transitions. [2022-11-22 01:53:11,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2022-11-22 01:53:11,747 INFO L276 IsEmpty]: Start isEmpty. Operand 18599 states and 28973 transitions. [2022-11-22 01:53:11,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2022-11-22 01:53:11,764 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:53:11,764 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] [2022-11-22 01:53:11,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 01:53:11,765 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)] === [2022-11-22 01:53:11,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:53:11,765 INFO L85 PathProgramCache]: Analyzing trace with hash 94279241, now seen corresponding path program 1 times [2022-11-22 01:53:11,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:53:11,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819356743] [2022-11-22 01:53:11,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:53:11,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:53:11,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:53:12,453 INFO L134 CoverageAnalysis]: Checked inductivity of 5430 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5430 trivial. 0 not checked. [2022-11-22 01:53:12,453 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:53:12,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819356743] [2022-11-22 01:53:12,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819356743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:53:12,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:53:12,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:53:12,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16688678] [2022-11-22 01:53:12,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:53:12,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:53:12,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:53:12,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:53:12,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:53:12,457 INFO L87 Difference]: Start difference. First operand 18599 states and 28973 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) [2022-11-22 01:53:14,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:53:18,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 01:53:21,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:53:21,860 INFO L93 Difference]: Finished difference Result 40469 states and 63020 transitions. [2022-11-22 01:53:21,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:53:21,861 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 [2022-11-22 01:53:21,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:53:21,973 INFO L225 Difference]: With dead ends: 40469 [2022-11-22 01:53:21,973 INFO L226 Difference]: Without dead ends: 21943 [2022-11-22 01:53:22,078 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 [2022-11-22 01:53:22,079 INFO L413 NwaCegarLoop]: 4977 mSDtfsCounter, 3358 mSDsluCounter, 3483 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3367 SdHoareTripleChecker+Valid, 8460 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-22 01:53:22,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3367 Valid, 8460 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 776 Invalid, 2 Unknown, 0 Unchecked, 6.8s Time] [2022-11-22 01:53:22,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21943 states. [2022-11-22 01:53:24,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21943 to 21874. [2022-11-22 01:53:24,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21874 states, 10063 states have (on average 1.2370068568021464) internal successors, (12448), 10418 states have internal predecessors, (12448), 10635 states have call successors, (10635), 1181 states have call predecessors, (10635), 1173 states have return successors, (10914), 10408 states have call predecessors, (10914), 10631 states have call successors, (10914) [2022-11-22 01:53:24,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21874 states to 21874 states and 33997 transitions. [2022-11-22 01:53:24,393 INFO L78 Accepts]: Start accepts. Automaton has 21874 states and 33997 transitions. Word has length 485 [2022-11-22 01:53:24,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:53:24,395 INFO L495 AbstractCegarLoop]: Abstraction has 21874 states and 33997 transitions. [2022-11-22 01:53:24,395 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) [2022-11-22 01:53:24,395 INFO L276 IsEmpty]: Start isEmpty. Operand 21874 states and 33997 transitions. [2022-11-22 01:53:24,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2022-11-22 01:53:24,417 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:53:24,417 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:53:24,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-22 01:53:24,418 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)] === [2022-11-22 01:53:24,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:53:24,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1146546736, now seen corresponding path program 1 times [2022-11-22 01:53:24,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:53:24,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110759944] [2022-11-22 01:53:24,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:53:24,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:53:24,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:53:25,284 INFO L134 CoverageAnalysis]: Checked inductivity of 5430 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5430 trivial. 0 not checked. [2022-11-22 01:53:25,284 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:53:25,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110759944] [2022-11-22 01:53:25,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110759944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:53:25,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:53:25,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:53:25,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282578043] [2022-11-22 01:53:25,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:53:25,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:53:25,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:53:25,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:53:25,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:53:25,288 INFO L87 Difference]: Start difference. First operand 21874 states and 33997 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2022-11-22 01:53:27,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:53:30,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 01:53:35,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:53:35,257 INFO L93 Difference]: Finished difference Result 60757 states and 94587 transitions. [2022-11-22 01:53:35,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:53:35,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) Word has length 506 [2022-11-22 01:53:35,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:53:35,546 INFO L225 Difference]: With dead ends: 60757 [2022-11-22 01:53:35,546 INFO L226 Difference]: Without dead ends: 38956 [2022-11-22 01:53:35,672 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 [2022-11-22 01:53:35,676 INFO L413 NwaCegarLoop]: 4677 mSDtfsCounter, 3613 mSDsluCounter, 3472 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3620 SdHoareTripleChecker+Valid, 8149 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:53:35,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3620 Valid, 8149 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 745 Invalid, 2 Unknown, 0 Unchecked, 6.2s Time] [2022-11-22 01:53:35,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38956 states. [2022-11-22 01:53:40,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38956 to 38865. [2022-11-22 01:53:40,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38865 states, 17833 states have (on average 1.230751976672461) internal successors, (21948), 18471 states have internal predecessors, (21948), 18926 states have call successors, (18926), 2119 states have call predecessors, (18926), 2103 states have return successors, (19604), 18516 states have call predecessors, (19604), 18922 states have call successors, (19604) [2022-11-22 01:53:40,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38865 states to 38865 states and 60478 transitions. [2022-11-22 01:53:40,472 INFO L78 Accepts]: Start accepts. Automaton has 38865 states and 60478 transitions. Word has length 506 [2022-11-22 01:53:40,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:53:40,473 INFO L495 AbstractCegarLoop]: Abstraction has 38865 states and 60478 transitions. [2022-11-22 01:53:40,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2022-11-22 01:53:40,474 INFO L276 IsEmpty]: Start isEmpty. Operand 38865 states and 60478 transitions. [2022-11-22 01:53:40,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2022-11-22 01:53:40,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:53:40,485 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] [2022-11-22 01:53:40,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-22 01:53:40,486 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)] === [2022-11-22 01:53:40,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:53:40,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1027882331, now seen corresponding path program 1 times [2022-11-22 01:53:40,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:53:40,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953669315] [2022-11-22 01:53:40,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:53:40,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:53:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:53:40,900 INFO L134 CoverageAnalysis]: Checked inductivity of 5138 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5138 trivial. 0 not checked. [2022-11-22 01:53:40,901 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:53:40,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953669315] [2022-11-22 01:53:40,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953669315] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:53:40,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:53:40,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:53:40,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221369012] [2022-11-22 01:53:40,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:53:40,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:53:40,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:53:40,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:53:40,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:53:40,903 INFO L87 Difference]: Start difference. First operand 38865 states and 60478 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) [2022-11-22 01:53:42,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:53:45,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 01:53:48,432 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 [] [2022-11-22 01:53:55,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:53:55,772 INFO L93 Difference]: Finished difference Result 111378 states and 173552 transitions. [2022-11-22 01:53:55,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:53:55,779 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 [2022-11-22 01:53:55,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:53:56,585 INFO L225 Difference]: With dead ends: 111378 [2022-11-22 01:53:56,585 INFO L226 Difference]: Without dead ends: 72586 [2022-11-22 01:53:56,792 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 [2022-11-22 01:53:56,793 INFO L413 NwaCegarLoop]: 4678 mSDtfsCounter, 3620 mSDsluCounter, 3472 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3624 SdHoareTripleChecker+Valid, 8150 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-22 01:53:56,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3624 Valid, 8150 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 743 Invalid, 2 Unknown, 0 Unchecked, 7.5s Time] [2022-11-22 01:53:56,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72586 states.