./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbd29ce-4af2-4c5e-8c24-55c973ac2abd/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbd29ce-4af2-4c5e-8c24-55c973ac2abd/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbd29ce-4af2-4c5e-8c24-55c973ac2abd/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbd29ce-4af2-4c5e-8c24-55c973ac2abd/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbd29ce-4af2-4c5e-8c24-55c973ac2abd/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbd29ce-4af2-4c5e-8c24-55c973ac2abd/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2ff699a14ff18600b4164aac890b6c04e9203457f89a66ec1bef9ac9dce5edac --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:22:07,107 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:22:07,109 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:22:07,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:22:07,136 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:22:07,137 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:22:07,139 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:22:07,141 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:22:07,143 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:22:07,144 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:22:07,145 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:22:07,146 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:22:07,147 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:22:07,148 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:22:07,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:22:07,151 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:22:07,152 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:22:07,153 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:22:07,155 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:22:07,157 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:22:07,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:22:07,166 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:22:07,167 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:22:07,168 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:22:07,172 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:22:07,173 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:22:07,173 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:22:07,174 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:22:07,175 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:22:07,184 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:22:07,184 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:22:07,186 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:22:07,188 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:22:07,190 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:22:07,193 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:22:07,193 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:22:07,194 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:22:07,194 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:22:07,195 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:22:07,196 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:22:07,197 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:22:07,198 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbd29ce-4af2-4c5e-8c24-55c973ac2abd/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:22:07,244 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:22:07,245 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:22:07,245 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:22:07,246 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:22:07,247 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:22:07,247 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:22:07,247 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:22:07,248 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:22:07,248 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:22:07,248 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:22:07,249 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:22:07,250 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:22:07,250 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:22:07,250 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:22:07,250 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:22:07,251 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:22:07,252 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:22:07,252 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:22:07,253 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:22:07,254 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:22:07,254 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:22:07,254 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:22:07,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:22:07,255 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:22:07,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:22:07,255 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:22:07,255 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:22:07,258 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:22:07,258 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:22:07,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:22:07,259 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:22:07,259 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:22:07,259 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:22:07,259 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:22:07,260 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:22:07,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:22:07,260 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:22:07,260 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:22:07,261 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_9fbd29ce-4af2-4c5e-8c24-55c973ac2abd/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbd29ce-4af2-4c5e-8c24-55c973ac2abd/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ff699a14ff18600b4164aac890b6c04e9203457f89a66ec1bef9ac9dce5edac [2022-11-03 02:22:07,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:22:07,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:22:07,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:22:07,637 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:22:07,638 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:22:07,639 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbd29ce-4af2-4c5e-8c24-55c973ac2abd/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i [2022-11-03 02:22:07,727 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbd29ce-4af2-4c5e-8c24-55c973ac2abd/bin/utaipan-7li7fVZpFI/data/d4eb888d5/ca439b5e1d264ff080e81b845cf202e5/FLAG3b0806a28 [2022-11-03 02:22:08,781 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:22:08,782 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbd29ce-4af2-4c5e-8c24-55c973ac2abd/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i [2022-11-03 02:22:08,869 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbd29ce-4af2-4c5e-8c24-55c973ac2abd/bin/utaipan-7li7fVZpFI/data/d4eb888d5/ca439b5e1d264ff080e81b845cf202e5/FLAG3b0806a28 [2022-11-03 02:22:09,066 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbd29ce-4af2-4c5e-8c24-55c973ac2abd/bin/utaipan-7li7fVZpFI/data/d4eb888d5/ca439b5e1d264ff080e81b845cf202e5 [2022-11-03 02:22:09,069 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:22:09,070 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:22:09,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:22:09,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:22:09,077 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:22:09,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:22:09" (1/1) ... [2022-11-03 02:22:09,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61b45f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:22:09, skipping insertion in model container [2022-11-03 02:22:09,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:22:09" (1/1) ... [2022-11-03 02:22:09,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:22:09,293 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:22:15,918 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbd29ce-4af2-4c5e-8c24-55c973ac2abd/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[555016,555029] [2022-11-03 02:22:15,921 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbd29ce-4af2-4c5e-8c24-55c973ac2abd/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[555185,555198] [2022-11-03 02:22:15,921 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbd29ce-4af2-4c5e-8c24-55c973ac2abd/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[555352,555365] [2022-11-03 02:22:15,922 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbd29ce-4af2-4c5e-8c24-55c973ac2abd/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[555520,555533] [2022-11-03 02:22:15,952 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:22:16,043 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:22:16,830 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbd29ce-4af2-4c5e-8c24-55c973ac2abd/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[555016,555029] [2022-11-03 02:22:16,832 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbd29ce-4af2-4c5e-8c24-55c973ac2abd/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[555185,555198] [2022-11-03 02:22:16,833 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbd29ce-4af2-4c5e-8c24-55c973ac2abd/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[555352,555365] [2022-11-03 02:22:16,833 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbd29ce-4af2-4c5e-8c24-55c973ac2abd/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[555520,555533] [2022-11-03 02:22:16,846 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:22:17,258 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:22:17,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:22:17 WrapperNode [2022-11-03 02:22:17,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:22:17,260 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:22:17,260 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:22:17,261 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:22:17,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:22:17" (1/1) ... [2022-11-03 02:22:17,458 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:22:17" (1/1) ... [2022-11-03 02:22:17,839 INFO L138 Inliner]: procedures = 740, calls = 4332, calls flagged for inlining = 368, calls inlined = 334, statements flattened = 9898 [2022-11-03 02:22:17,840 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:22:17,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:22:17,841 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:22:17,841 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:22:17,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:22:17" (1/1) ... [2022-11-03 02:22:17,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:22:17" (1/1) ... [2022-11-03 02:22:17,918 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:22:17" (1/1) ... [2022-11-03 02:22:17,919 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:22:17" (1/1) ... [2022-11-03 02:22:18,388 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:22:17" (1/1) ... [2022-11-03 02:22:18,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:22:17" (1/1) ... [2022-11-03 02:22:18,507 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:22:17" (1/1) ... [2022-11-03 02:22:18,581 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:22:17" (1/1) ... [2022-11-03 02:22:18,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:22:18,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:22:18,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:22:18,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:22:18,665 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:22:17" (1/1) ... [2022-11-03 02:22:18,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:22:18,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbd29ce-4af2-4c5e-8c24-55c973ac2abd/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:22:18,698 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbd29ce-4af2-4c5e-8c24-55c973ac2abd/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:22:18,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbd29ce-4af2-4c5e-8c24-55c973ac2abd/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:22:18,752 INFO L130 BoogieDeclarations]: Found specification of procedure ipv6_hdr [2022-11-03 02:22:18,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ipv6_hdr [2022-11-03 02:22:18,753 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-03 02:22:18,753 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-03 02:22:18,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:22:18,753 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:22:18,753 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_0_6 [2022-11-03 02:22:18,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_0_6 [2022-11-03 02:22:18,754 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_clean_rx_irq [2022-11-03 02:22:18,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_clean_rx_irq [2022-11-03 02:22:18,754 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_setup_rx_resources [2022-11-03 02:22:18,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_setup_rx_resources [2022-11-03 02:22:18,754 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:22:18,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:22:18,755 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_tx_ctxtdesc [2022-11-03 02:22:18,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_tx_ctxtdesc [2022-11-03 02:22:18,755 INFO L130 BoogieDeclarations]: Found specification of procedure skb_header_pointer [2022-11-03 02:22:18,755 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_header_pointer [2022-11-03 02:22:18,755 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-03 02:22:18,756 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-03 02:22:18,756 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_write_eitr [2022-11-03 02:22:18,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_write_eitr [2022-11-03 02:22:18,756 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2022-11-03 02:22:18,756 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2022-11-03 02:22:18,757 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 02:22:18,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 02:22:18,757 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_set_uc_addr_vf [2022-11-03 02:22:18,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_set_uc_addr_vf [2022-11-03 02:22:18,758 INFO L130 BoogieDeclarations]: Found specification of procedure netif_napi_del [2022-11-03 02:22:18,758 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_napi_del [2022-11-03 02:22:18,758 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-03 02:22:18,758 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-03 02:22:18,759 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-03 02:22:18,759 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-03 02:22:18,759 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~X~~u32~0~X~~bool~0~TO~~s32~0 [2022-11-03 02:22:18,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~X~~u32~0~X~~bool~0~TO~~s32~0 [2022-11-03 02:22:18,759 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 02:22:18,760 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 02:22:18,760 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_desc_unused [2022-11-03 02:22:18,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_desc_unused [2022-11-03 02:22:18,760 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_poll_for_ack [2022-11-03 02:22:18,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_poll_for_ack [2022-11-03 02:22:18,760 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_setup_tx_resources [2022-11-03 02:22:18,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_setup_tx_resources [2022-11-03 02:22:18,761 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_remove [2022-11-03 02:22:18,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_remove [2022-11-03 02:22:18,761 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-03 02:22:18,761 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-03 02:22:18,761 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 02:22:18,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 02:22:18,762 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-03 02:22:18,762 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-03 02:22:18,762 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-03 02:22:18,762 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-03 02:22:18,762 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-03 02:22:18,763 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-03 02:22:18,763 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 02:22:18,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 02:22:18,763 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2022-11-03 02:22:18,763 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2022-11-03 02:22:18,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:22:18,764 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-03 02:22:18,764 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-03 02:22:18,764 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_resume [2022-11-03 02:22:18,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_resume [2022-11-03 02:22:18,764 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2022-11-03 02:22:18,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2022-11-03 02:22:18,765 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2022-11-03 02:22:18,765 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2022-11-03 02:22:18,765 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-11-03 02:22:18,765 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-11-03 02:22:18,765 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_write_mbx_vf [2022-11-03 02:22:18,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_write_mbx_vf [2022-11-03 02:22:18,766 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_read_posted_mbx [2022-11-03 02:22:18,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_read_posted_mbx [2022-11-03 02:22:18,766 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_read_mbx_vf [2022-11-03 02:22:18,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_read_mbx_vf [2022-11-03 02:22:18,766 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 02:22:18,766 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 02:22:18,767 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-11-03 02:22:18,767 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-11-03 02:22:18,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:22:18,767 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_reinit_locked [2022-11-03 02:22:18,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_reinit_locked [2022-11-03 02:22:18,767 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_up [2022-11-03 02:22:18,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_up [2022-11-03 02:22:18,769 INFO L130 BoogieDeclarations]: Found specification of procedure pci_save_state [2022-11-03 02:22:18,769 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_save_state [2022-11-03 02:22:18,769 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 02:22:18,769 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 02:22:18,769 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 02:22:18,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 02:22:18,770 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_free_irq [2022-11-03 02:22:18,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_free_irq [2022-11-03 02:22:18,770 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_set_rar_vf [2022-11-03 02:22:18,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_set_rar_vf [2022-11-03 02:22:18,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:22:18,771 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 02:22:18,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 02:22:18,771 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_78 [2022-11-03 02:22:18,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_78 [2022-11-03 02:22:18,772 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header_len [2022-11-03 02:22:18,772 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header_len [2022-11-03 02:22:18,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:22:18,773 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-03 02:22:18,776 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-03 02:22:18,777 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_set_vfta_vf [2022-11-03 02:22:18,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_set_vfta_vf [2022-11-03 02:22:18,777 INFO L130 BoogieDeclarations]: Found specification of procedure vzalloc [2022-11-03 02:22:18,777 INFO L138 BoogieDeclarations]: Found implementation of procedure vzalloc [2022-11-03 02:22:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 02:22:18,778 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 02:22:18,779 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_down [2022-11-03 02:22:18,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_down [2022-11-03 02:22:18,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-03 02:22:18,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-03 02:22:18,786 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2022-11-03 02:22:18,787 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2022-11-03 02:22:18,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-03 02:22:18,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-03 02:22:18,787 INFO L130 BoogieDeclarations]: Found specification of procedure map_vector_to_txq [2022-11-03 02:22:18,787 INFO L138 BoogieDeclarations]: Found implementation of procedure map_vector_to_txq [2022-11-03 02:22:18,787 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_offset [2022-11-03 02:22:18,787 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_offset [2022-11-03 02:22:18,788 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_free_all_rx_resources [2022-11-03 02:22:18,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_free_all_rx_resources [2022-11-03 02:22:18,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-03 02:22:18,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-03 02:22:18,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_94 [2022-11-03 02:22:18,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_94 [2022-11-03 02:22:18,789 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-11-03 02:22:18,789 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-11-03 02:22:18,789 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_tx_timeout [2022-11-03 02:22:18,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_tx_timeout [2022-11-03 02:22:18,789 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-03 02:22:18,789 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-03 02:22:18,789 INFO L130 BoogieDeclarations]: Found specification of procedure __udelay [2022-11-03 02:22:18,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __udelay [2022-11-03 02:22:18,790 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_negotiate_api [2022-11-03 02:22:18,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_negotiate_api [2022-11-03 02:22:18,790 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 02:22:18,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 02:22:18,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:22:18,791 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-03 02:22:18,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-03 02:22:18,791 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-03 02:22:18,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-03 02:22:18,791 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-03 02:22:18,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-03 02:22:18,791 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_alloc_rx_buffers [2022-11-03 02:22:18,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_alloc_rx_buffers [2022-11-03 02:22:18,792 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2022-11-03 02:22:18,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2022-11-03 02:22:18,792 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_init_interrupt_scheme [2022-11-03 02:22:18,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_init_interrupt_scheme [2022-11-03 02:22:18,792 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2022-11-03 02:22:18,792 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2022-11-03 02:22:18,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:22:18,793 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-03 02:22:18,793 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-03 02:22:18,793 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 02:22:18,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 02:22:18,794 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 02:22:18,794 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 02:22:18,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:22:18,794 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 02:22:18,794 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_free_tx_resources [2022-11-03 02:22:18,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_free_tx_resources [2022-11-03 02:22:18,795 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_init_hw_vf [2022-11-03 02:22:18,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_init_hw_vf [2022-11-03 02:22:18,795 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2022-11-03 02:22:18,795 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2022-11-03 02:22:18,795 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_maybe_stop_tx [2022-11-03 02:22:18,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_maybe_stop_tx [2022-11-03 02:22:18,796 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_check_for_msg_vf [2022-11-03 02:22:18,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_check_for_msg_vf [2022-11-03 02:22:18,796 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-03 02:22:18,796 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-03 02:22:18,797 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_busy_poll_recv [2022-11-03 02:22:18,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_busy_poll_recv [2022-11-03 02:22:18,798 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_write_posted_mbx [2022-11-03 02:22:18,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_write_posted_mbx [2022-11-03 02:22:18,798 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~X~$Pointer$~TO~~s32~0 [2022-11-03 02:22:18,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~X~$Pointer$~TO~~s32~0 [2022-11-03 02:22:18,799 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-03 02:22:18,799 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-03 02:22:18,799 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2022-11-03 02:22:18,799 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2022-11-03 02:22:18,799 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 02:22:18,800 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 02:22:18,800 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~~s32~0 [2022-11-03 02:22:18,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~~s32~0 [2022-11-03 02:22:18,800 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_init_last_counter_stats [2022-11-03 02:22:18,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_init_last_counter_stats [2022-11-03 02:22:18,800 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_io_resume [2022-11-03 02:22:18,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_io_resume [2022-11-03 02:22:18,801 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-03 02:22:18,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-03 02:22:18,801 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_up_complete [2022-11-03 02:22:18,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_up_complete [2022-11-03 02:22:18,801 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_begin_bh [2022-11-03 02:22:18,801 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_begin_bh [2022-11-03 02:22:18,801 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_set_ivar [2022-11-03 02:22:18,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_set_ivar [2022-11-03 02:22:18,802 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_check_for_bit_vf [2022-11-03 02:22:18,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_check_for_bit_vf [2022-11-03 02:22:18,802 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-03 02:22:18,802 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-03 02:22:18,802 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-03 02:22:18,803 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-03 02:22:18,803 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_shutdown [2022-11-03 02:22:18,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_shutdown [2022-11-03 02:22:18,803 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_reset_interrupt_capability [2022-11-03 02:22:18,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_reset_interrupt_capability [2022-11-03 02:22:18,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:22:18,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:22:18,804 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-11-03 02:22:18,804 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-11-03 02:22:18,804 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_nway_reset [2022-11-03 02:22:18,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_nway_reset [2022-11-03 02:22:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2022-11-03 02:22:18,805 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2022-11-03 02:22:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_obtain_mbx_lock_vf [2022-11-03 02:22:18,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_obtain_mbx_lock_vf [2022-11-03 02:22:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_clean_tx_ring [2022-11-03 02:22:18,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_clean_tx_ring [2022-11-03 02:22:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_check_for_rst_vf [2022-11-03 02:22:18,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_check_for_rst_vf [2022-11-03 02:22:18,806 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_read_v2p_mailbox [2022-11-03 02:22:18,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_read_v2p_mailbox [2022-11-03 02:22:18,806 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-03 02:22:18,807 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-03 02:22:18,811 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_check_for_ack_vf [2022-11-03 02:22:18,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_check_for_ack_vf [2022-11-03 02:22:18,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:22:18,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:22:18,812 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:22:18,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:22:18,812 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_update_stats [2022-11-03 02:22:18,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_update_stats [2022-11-03 02:22:18,812 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-03 02:22:18,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-03 02:22:18,813 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_irq_enable [2022-11-03 02:22:18,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_irq_enable [2022-11-03 02:22:18,814 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 02:22:18,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 02:22:18,814 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-11-03 02:22:18,814 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-11-03 02:22:18,814 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-03 02:22:18,814 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-03 02:22:18,814 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-03 02:22:18,814 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_start_hw_vf [2022-11-03 02:22:18,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_start_hw_vf [2022-11-03 02:22:18,815 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-11-03 02:22:18,815 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-11-03 02:22:18,815 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-03 02:22:18,815 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-03 02:22:18,815 INFO L130 BoogieDeclarations]: Found specification of procedure napi_hash_del [2022-11-03 02:22:18,815 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_hash_del [2022-11-03 02:22:18,816 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-03 02:22:18,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-03 02:22:18,816 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_update_begin [2022-11-03 02:22:18,816 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_update_begin [2022-11-03 02:22:18,816 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_all_queues [2022-11-03 02:22:18,816 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_all_queues [2022-11-03 02:22:18,816 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_set_rx_mode [2022-11-03 02:22:18,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_set_rx_mode [2022-11-03 02:22:18,817 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2022-11-03 02:22:18,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2022-11-03 02:22:18,817 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2022-11-03 02:22:18,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2022-11-03 02:22:18,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 02:22:18,817 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 02:22:18,817 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~X~$Pointer$~X~~u32~0~TO~~s32~0 [2022-11-03 02:22:18,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~X~$Pointer$~X~~u32~0~TO~~s32~0 [2022-11-03 02:22:18,818 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_poll_for_msg [2022-11-03 02:22:18,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_poll_for_msg [2022-11-03 02:22:18,818 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_suspend [2022-11-03 02:22:18,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_suspend [2022-11-03 02:22:18,818 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2022-11-03 02:22:18,818 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2022-11-03 02:22:18,818 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2022-11-03 02:22:18,819 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2022-11-03 02:22:18,819 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-03 02:22:18,819 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-03 02:22:18,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:22:18,819 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 02:22:18,819 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 02:22:18,819 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2022-11-03 02:22:18,820 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2022-11-03 02:22:18,820 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-03 02:22:18,820 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-03 02:22:18,820 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_link_test [2022-11-03 02:22:18,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_link_test [2022-11-03 02:22:18,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:22:18,820 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_vlan_rx_add_vid [2022-11-03 02:22:18,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_vlan_rx_add_vid [2022-11-03 02:22:18,821 INFO L130 BoogieDeclarations]: Found specification of procedure map_vector_to_rxq [2022-11-03 02:22:18,821 INFO L138 BoogieDeclarations]: Found implementation of procedure map_vector_to_rxq [2022-11-03 02:22:18,821 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~~bool~0~TO~~s32~0 [2022-11-03 02:22:18,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~~bool~0~TO~~s32~0 [2022-11-03 02:22:18,821 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~s32~0 [2022-11-03 02:22:18,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~s32~0 [2022-11-03 02:22:18,821 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2022-11-03 02:22:18,822 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2022-11-03 02:22:18,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:22:18,822 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_get_mac_addr_vf [2022-11-03 02:22:18,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_get_mac_addr_vf [2022-11-03 02:22:18,822 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_configure [2022-11-03 02:22:18,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_configure [2022-11-03 02:22:18,822 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_free_all_tx_resources [2022-11-03 02:22:18,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_free_all_tx_resources [2022-11-03 02:22:18,823 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 02:22:18,823 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 02:22:18,823 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-03 02:22:18,823 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-03 02:22:18,823 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_get_queues [2022-11-03 02:22:18,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_get_queues [2022-11-03 02:22:18,823 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 02:22:18,824 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 02:22:18,824 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2022-11-03 02:22:18,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2022-11-03 02:22:18,824 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_write_msg_read_ack [2022-11-03 02:22:18,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_write_msg_read_ack [2022-11-03 02:22:18,824 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 02:22:18,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 02:22:18,824 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-03 02:22:18,825 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-03 02:22:18,825 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-03 02:22:18,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-03 02:22:18,825 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-03 02:22:18,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-03 02:22:18,825 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-11-03 02:22:18,825 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-11-03 02:22:18,826 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_open [2022-11-03 02:22:18,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_open [2022-11-03 02:22:18,826 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u16~0~TO~~s32~0 [2022-11-03 02:22:18,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u16~0~TO~~s32~0 [2022-11-03 02:22:18,826 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_93 [2022-11-03 02:22:18,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_93 [2022-11-03 02:22:18,826 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_ixgbevf_exit_module_17_2 [2022-11-03 02:22:18,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_ixgbevf_exit_module_17_2 [2022-11-03 02:22:18,827 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_check_mac_link_vf [2022-11-03 02:22:18,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_check_mac_link_vf [2022-11-03 02:22:18,827 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_clear_interrupt_scheme [2022-11-03 02:22:18,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_clear_interrupt_scheme [2022-11-03 02:22:18,827 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_get_regs_len [2022-11-03 02:22:18,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_get_regs_len [2022-11-03 02:22:18,827 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-03 02:22:18,828 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-03 02:22:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-03 02:22:18,828 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-03 02:22:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 02:22:18,828 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 02:22:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-03 02:22:18,828 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-03 02:22:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_update_mc_addr_list_vf [2022-11-03 02:22:18,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_update_mc_addr_list_vf [2022-11-03 02:22:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_free_rx_resources [2022-11-03 02:22:18,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_free_rx_resources [2022-11-03 02:22:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-03 02:22:18,829 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-03 02:22:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_77 [2022-11-03 02:22:18,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_77 [2022-11-03 02:22:18,830 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2022-11-03 02:22:18,830 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2022-11-03 02:22:18,830 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 02:22:18,830 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 02:22:18,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:22:18,830 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_init_mbx_params_vf [2022-11-03 02:22:18,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_init_mbx_params_vf [2022-11-03 02:22:18,831 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2022-11-03 02:22:18,831 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2022-11-03 02:22:18,831 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_free_q_vectors [2022-11-03 02:22:18,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_free_q_vectors [2022-11-03 02:22:18,831 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:22:18,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:22:18,831 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_disable_rx_queue [2022-11-03 02:22:18,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_disable_rx_queue [2022-11-03 02:22:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_reset [2022-11-03 02:22:18,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_reset [2022-11-03 02:22:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_close [2022-11-03 02:22:18,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_close [2022-11-03 02:22:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~$Pointer$~TO~int [2022-11-03 02:22:18,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~$Pointer$~TO~int [2022-11-03 02:22:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device_mem [2022-11-03 02:22:18,833 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device_mem [2022-11-03 02:22:18,833 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_retry_bh [2022-11-03 02:22:18,833 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_retry_bh [2022-11-03 02:22:18,833 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-03 02:22:18,833 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-03 02:22:18,833 INFO L130 BoogieDeclarations]: Found specification of procedure vmalloc [2022-11-03 02:22:18,833 INFO L138 BoogieDeclarations]: Found implementation of procedure vmalloc [2022-11-03 02:22:18,833 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-03 02:22:18,834 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-03 02:22:18,834 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask_and_coherent [2022-11-03 02:22:18,834 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask_and_coherent [2022-11-03 02:22:18,834 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdrlen [2022-11-03 02:22:18,834 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdrlen [2022-11-03 02:22:18,834 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2022-11-03 02:22:18,834 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2022-11-03 02:22:18,835 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2022-11-03 02:22:18,835 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2022-11-03 02:22:18,835 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 02:22:18,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 02:22:18,835 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-03 02:22:18,835 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-03 02:22:18,835 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-03 02:22:18,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-03 02:22:18,836 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_clean_rx_ring [2022-11-03 02:22:18,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_clean_rx_ring [2022-11-03 02:22:18,836 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_stop_hw_vf [2022-11-03 02:22:18,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_stop_hw_vf [2022-11-03 02:22:18,836 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_1_6 [2022-11-03 02:22:18,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_1_6 [2022-11-03 02:22:18,836 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_reset_hw_vf [2022-11-03 02:22:18,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_reset_hw_vf [2022-11-03 02:22:18,837 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-11-03 02:22:18,837 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-11-03 02:22:18,837 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-03 02:22:18,837 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-03 02:22:18,837 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_unmap_and_free_tx_resource [2022-11-03 02:22:18,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_unmap_and_free_tx_resource [2022-11-03 02:22:18,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:22:18,838 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_page [2022-11-03 02:22:18,838 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_page [2022-11-03 02:22:18,838 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 02:22:18,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 02:22:18,838 INFO L130 BoogieDeclarations]: Found specification of procedure netpoll_trap [2022-11-03 02:22:18,838 INFO L138 BoogieDeclarations]: Found implementation of procedure netpoll_trap [2022-11-03 02:22:20,473 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:22:20,478 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:22:20,763 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:25:35,023 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-03 02:25:35,168 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:25:39,852 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:25:39,852 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-03 02:25:39,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:25:39 BoogieIcfgContainer [2022-11-03 02:25:39,859 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:25:39,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:25:39,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:25:39,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:25:39,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:22:09" (1/3) ... [2022-11-03 02:25:39,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@613af1d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:25:39, skipping insertion in model container [2022-11-03 02:25:39,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:22:17" (2/3) ... [2022-11-03 02:25:39,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@613af1d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:25:39, skipping insertion in model container [2022-11-03 02:25:39,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:25:39" (3/3) ... [2022-11-03 02:25:39,868 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i [2022-11-03 02:25:39,890 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:25:39,890 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-03 02:25:39,984 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:25:39,990 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;@6bd688b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:25:39,990 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-03 02:25:40,002 INFO L276 IsEmpty]: Start isEmpty. Operand has 2779 states, 1656 states have (on average 1.2952898550724639) internal successors, (2145), 1700 states have internal predecessors, (2145), 915 states have call successors, (915), 206 states have call predecessors, (915), 205 states have return successors, (908), 904 states have call predecessors, (908), 908 states have call successors, (908) [2022-11-03 02:25:40,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2022-11-03 02:25:40,027 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:40,028 INFO L195 NwaCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:40,028 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:25:40,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:40,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1957563835, now seen corresponding path program 1 times [2022-11-03 02:25:40,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:40,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325866094] [2022-11-03 02:25:40,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:40,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:41,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:42,415 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3306 trivial. 0 not checked. [2022-11-03 02:25:42,416 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:42,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325866094] [2022-11-03 02:25:42,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325866094] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:42,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:42,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:25:42,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105750655] [2022-11-03 02:25:42,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:42,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:25:42,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:42,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:25:42,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:25:42,483 INFO L87 Difference]: Start difference. First operand has 2779 states, 1656 states have (on average 1.2952898550724639) internal successors, (2145), 1700 states have internal predecessors, (2145), 915 states have call successors, (915), 206 states have call predecessors, (915), 205 states have return successors, (908), 904 states have call predecessors, (908), 908 states have call successors, (908) Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-03 02:25:44,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:49,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:52,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:54,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:00,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:00,039 INFO L93 Difference]: Finished difference Result 8124 states and 11755 transitions. [2022-11-03 02:26:00,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:26:00,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 311 [2022-11-03 02:26:00,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:00,095 INFO L225 Difference]: With dead ends: 8124 [2022-11-03 02:26:00,095 INFO L226 Difference]: Without dead ends: 5393 [2022-11-03 02:26:00,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:26:00,121 INFO L413 NwaCegarLoop]: 4232 mSDtfsCounter, 3755 mSDsluCounter, 3913 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 7 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3755 SdHoareTripleChecker+Valid, 7587 SdHoareTripleChecker+Invalid, 1162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:00,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3755 Valid, 7587 Invalid, 1162 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 1151 Invalid, 4 Unknown, 0 Unchecked, 16.9s Time] [2022-11-03 02:26:00,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5393 states. [2022-11-03 02:26:00,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5393 to 5389. [2022-11-03 02:26:00,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5389 states, 3235 states have (on average 1.2927357032457496) internal successors, (4182), 3320 states have internal predecessors, (4182), 1745 states have call successors, (1745), 407 states have call predecessors, (1745), 406 states have return successors, (1741), 1733 states have call predecessors, (1741), 1741 states have call successors, (1741) [2022-11-03 02:26:00,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5389 states to 5389 states and 7668 transitions. [2022-11-03 02:26:00,515 INFO L78 Accepts]: Start accepts. Automaton has 5389 states and 7668 transitions. Word has length 311 [2022-11-03 02:26:00,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:00,521 INFO L495 AbstractCegarLoop]: Abstraction has 5389 states and 7668 transitions. [2022-11-03 02:26:00,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-03 02:26:00,521 INFO L276 IsEmpty]: Start isEmpty. Operand 5389 states and 7668 transitions. [2022-11-03 02:26:00,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2022-11-03 02:26:00,537 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:00,537 INFO L195 NwaCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:00,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:26:00,541 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:26:00,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:00,542 INFO L85 PathProgramCache]: Analyzing trace with hash 2013626300, now seen corresponding path program 1 times [2022-11-03 02:26:00,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:00,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244507150] [2022-11-03 02:26:00,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:00,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:01,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:02,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3306 trivial. 0 not checked. [2022-11-03 02:26:02,129 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:02,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244507150] [2022-11-03 02:26:02,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244507150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:02,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:02,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:26:02,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740617682] [2022-11-03 02:26:02,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:02,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:26:02,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:02,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:26:02,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:26:02,136 INFO L87 Difference]: Start difference. First operand 5389 states and 7668 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-03 02:26:04,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:08,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:10,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:18,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:18,433 INFO L93 Difference]: Finished difference Result 12064 states and 17168 transitions. [2022-11-03 02:26:18,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:26:18,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 322 [2022-11-03 02:26:18,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:18,488 INFO L225 Difference]: With dead ends: 12064 [2022-11-03 02:26:18,488 INFO L226 Difference]: Without dead ends: 6734 [2022-11-03 02:26:18,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:26:18,515 INFO L413 NwaCegarLoop]: 4318 mSDtfsCounter, 2843 mSDsluCounter, 3876 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 19 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2843 SdHoareTripleChecker+Valid, 7640 SdHoareTripleChecker+Invalid, 1286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:18,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2843 Valid, 7640 Invalid, 1286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1264 Invalid, 3 Unknown, 0 Unchecked, 15.8s Time] [2022-11-03 02:26:18,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6734 states. [2022-11-03 02:26:18,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6734 to 6705. [2022-11-03 02:26:18,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6705 states, 4063 states have (on average 1.2919025350726066) internal successors, (5249), 4165 states have internal predecessors, (5249), 2135 states have call successors, (2135), 506 states have call predecessors, (2135), 504 states have return successors, (2131), 2118 states have call predecessors, (2131), 2131 states have call successors, (2131) [2022-11-03 02:26:18,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6705 states to 6705 states and 9515 transitions. [2022-11-03 02:26:18,908 INFO L78 Accepts]: Start accepts. Automaton has 6705 states and 9515 transitions. Word has length 322 [2022-11-03 02:26:18,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:18,913 INFO L495 AbstractCegarLoop]: Abstraction has 6705 states and 9515 transitions. [2022-11-03 02:26:18,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-03 02:26:18,915 INFO L276 IsEmpty]: Start isEmpty. Operand 6705 states and 9515 transitions. [2022-11-03 02:26:18,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2022-11-03 02:26:18,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:18,923 INFO L195 NwaCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:18,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:26:18,923 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:26:18,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:18,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1307579142, now seen corresponding path program 1 times [2022-11-03 02:26:18,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:18,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810967774] [2022-11-03 02:26:18,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:18,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:19,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:20,098 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3306 trivial. 0 not checked. [2022-11-03 02:26:20,099 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:20,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810967774] [2022-11-03 02:26:20,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810967774] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:20,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:20,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:26:20,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918670104] [2022-11-03 02:26:20,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:20,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:26:20,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:20,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:26:20,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:26:20,102 INFO L87 Difference]: Start difference. First operand 6705 states and 9515 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-03 02:26:22,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:28,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:32,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:35,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:37,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:37,222 INFO L93 Difference]: Finished difference Result 14566 states and 20591 transitions. [2022-11-03 02:26:37,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:26:37,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 328 [2022-11-03 02:26:37,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:37,273 INFO L225 Difference]: With dead ends: 14566 [2022-11-03 02:26:37,273 INFO L226 Difference]: Without dead ends: 7920 [2022-11-03 02:26:37,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:26:37,302 INFO L413 NwaCegarLoop]: 4025 mSDtfsCounter, 2800 mSDsluCounter, 3847 mSDsCounter, 0 mSdLazyCounter, 1185 mSolverCounterSat, 7 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2800 SdHoareTripleChecker+Valid, 7347 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1185 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:37,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2800 Valid, 7347 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1185 Invalid, 4 Unknown, 0 Unchecked, 16.6s Time] [2022-11-03 02:26:37,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7920 states. [2022-11-03 02:26:37,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7920 to 7889. [2022-11-03 02:26:37,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7889 states, 4781 states have (on average 1.2898975109809663) internal successors, (6167), 4901 states have internal predecessors, (6167), 2471 states have call successors, (2471), 637 states have call predecessors, (2471), 634 states have return successors, (2468), 2442 states have call predecessors, (2468), 2467 states have call successors, (2468) [2022-11-03 02:26:37,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7889 states to 7889 states and 11106 transitions. [2022-11-03 02:26:37,697 INFO L78 Accepts]: Start accepts. Automaton has 7889 states and 11106 transitions. Word has length 328 [2022-11-03 02:26:37,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:37,699 INFO L495 AbstractCegarLoop]: Abstraction has 7889 states and 11106 transitions. [2022-11-03 02:26:37,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-03 02:26:37,699 INFO L276 IsEmpty]: Start isEmpty. Operand 7889 states and 11106 transitions. [2022-11-03 02:26:37,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2022-11-03 02:26:37,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:37,708 INFO L195 NwaCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 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] [2022-11-03 02:26:37,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:26:37,708 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:26:37,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:37,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1418269582, now seen corresponding path program 1 times [2022-11-03 02:26:37,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:37,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378238560] [2022-11-03 02:26:37,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:37,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:38,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:39,973 INFO L134 CoverageAnalysis]: Checked inductivity of 3519 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3519 trivial. 0 not checked. [2022-11-03 02:26:39,973 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:39,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378238560] [2022-11-03 02:26:39,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378238560] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:39,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:39,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:26:39,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692060687] [2022-11-03 02:26:39,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:39,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:26:39,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:39,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:26:39,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:26:39,976 INFO L87 Difference]: Start difference. First operand 7889 states and 11106 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-03 02:26:42,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:50,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:55,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:57,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:02,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:02,644 INFO L93 Difference]: Finished difference Result 15153 states and 21374 transitions. [2022-11-03 02:27:02,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:27:02,648 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 353 [2022-11-03 02:27:02,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:02,762 INFO L225 Difference]: With dead ends: 15153 [2022-11-03 02:27:02,762 INFO L226 Difference]: Without dead ends: 15151 [2022-11-03 02:27:02,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:27:02,776 INFO L413 NwaCegarLoop]: 4257 mSDtfsCounter, 3835 mSDsluCounter, 13478 mSDsCounter, 0 mSdLazyCounter, 2290 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3850 SdHoareTripleChecker+Valid, 16037 SdHoareTripleChecker+Invalid, 2296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2290 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:02,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3850 Valid, 16037 Invalid, 2296 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 2290 Invalid, 3 Unknown, 0 Unchecked, 22.0s Time] [2022-11-03 02:27:02,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15151 states. [2022-11-03 02:27:04,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15151 to 15142. [2022-11-03 02:27:04,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15142 states, 9161 states have (on average 1.2902521558781792) internal successors, (11820), 9398 states have internal predecessors, (11820), 4754 states have call successors, (4754), 1230 states have call predecessors, (4754), 1224 states have return successors, (4792), 4693 states have call predecessors, (4792), 4746 states have call successors, (4792) [2022-11-03 02:27:04,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15142 states to 15142 states and 21366 transitions. [2022-11-03 02:27:04,166 INFO L78 Accepts]: Start accepts. Automaton has 15142 states and 21366 transitions. Word has length 353 [2022-11-03 02:27:04,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:04,167 INFO L495 AbstractCegarLoop]: Abstraction has 15142 states and 21366 transitions. [2022-11-03 02:27:04,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-03 02:27:04,167 INFO L276 IsEmpty]: Start isEmpty. Operand 15142 states and 21366 transitions. [2022-11-03 02:27:04,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2022-11-03 02:27:04,178 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:04,178 INFO L195 NwaCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 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] [2022-11-03 02:27:04,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:27:04,181 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:27:04,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:04,182 INFO L85 PathProgramCache]: Analyzing trace with hash -76944224, now seen corresponding path program 1 times [2022-11-03 02:27:04,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:27:04,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466062572] [2022-11-03 02:27:04,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:04,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:27:04,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:06,373 INFO L134 CoverageAnalysis]: Checked inductivity of 3529 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3527 trivial. 0 not checked. [2022-11-03 02:27:06,373 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:27:06,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466062572] [2022-11-03 02:27:06,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466062572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:06,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:06,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:27:06,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268812852] [2022-11-03 02:27:06,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:06,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:27:06,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:27:06,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:27:06,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:27:06,375 INFO L87 Difference]: Start difference. First operand 15142 states and 21366 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2022-11-03 02:27:08,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:20,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:22,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:27,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:27,729 INFO L93 Difference]: Finished difference Result 22497 states and 31692 transitions. [2022-11-03 02:27:27,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:27:27,730 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) Word has length 362 [2022-11-03 02:27:27,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:27,860 INFO L225 Difference]: With dead ends: 22497 [2022-11-03 02:27:27,860 INFO L226 Difference]: Without dead ends: 22495 [2022-11-03 02:27:27,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:27:27,879 INFO L413 NwaCegarLoop]: 4255 mSDtfsCounter, 3817 mSDsluCounter, 13474 mSDsCounter, 0 mSdLazyCounter, 2297 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3831 SdHoareTripleChecker+Valid, 16025 SdHoareTripleChecker+Invalid, 2302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2297 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:27,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3831 Valid, 16025 Invalid, 2302 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 2297 Invalid, 3 Unknown, 0 Unchecked, 20.6s Time] [2022-11-03 02:27:27,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22495 states. [2022-11-03 02:27:29,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22495 to 22489. [2022-11-03 02:27:29,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22489 states, 13595 states have (on average 1.2898859874954027) internal successors, (17536), 13952 states have internal predecessors, (17536), 7058 states have call successors, (7058), 1842 states have call predecessors, (7058), 1833 states have return successors, (7093), 6968 states have call predecessors, (7093), 7046 states have call successors, (7093) [2022-11-03 02:27:29,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22489 states to 22489 states and 31687 transitions. [2022-11-03 02:27:29,370 INFO L78 Accepts]: Start accepts. Automaton has 22489 states and 31687 transitions. Word has length 362 [2022-11-03 02:27:29,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:29,372 INFO L495 AbstractCegarLoop]: Abstraction has 22489 states and 31687 transitions. [2022-11-03 02:27:29,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2022-11-03 02:27:29,373 INFO L276 IsEmpty]: Start isEmpty. Operand 22489 states and 31687 transitions. [2022-11-03 02:27:29,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-11-03 02:27:29,384 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:29,385 INFO L195 NwaCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:27:29,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:27:29,385 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:27:29,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:29,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1903823208, now seen corresponding path program 1 times [2022-11-03 02:27:29,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:27:29,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388553450] [2022-11-03 02:27:29,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:29,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:27:29,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:31,802 INFO L134 CoverageAnalysis]: Checked inductivity of 3534 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3530 trivial. 0 not checked. [2022-11-03 02:27:31,802 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:27:31,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388553450] [2022-11-03 02:27:31,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388553450] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:31,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:31,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:27:31,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899811469] [2022-11-03 02:27:31,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:31,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:27:31,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:27:31,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:27:31,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:27:31,804 INFO L87 Difference]: Start difference. First operand 22489 states and 31687 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2022-11-03 02:27:33,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:46,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:48,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:52,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:52,925 INFO L93 Difference]: Finished difference Result 22501 states and 31695 transitions. [2022-11-03 02:27:52,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:27:52,929 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 366 [2022-11-03 02:27:52,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:53,028 INFO L225 Difference]: With dead ends: 22501 [2022-11-03 02:27:53,029 INFO L226 Difference]: Without dead ends: 22499 [2022-11-03 02:27:53,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:27:53,039 INFO L413 NwaCegarLoop]: 4255 mSDtfsCounter, 3817 mSDsluCounter, 13474 mSDsCounter, 0 mSdLazyCounter, 2297 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3830 SdHoareTripleChecker+Valid, 16025 SdHoareTripleChecker+Invalid, 2302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2297 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:53,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3830 Valid, 16025 Invalid, 2302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2297 Invalid, 3 Unknown, 0 Unchecked, 20.3s Time] [2022-11-03 02:27:53,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22499 states. [2022-11-03 02:27:54,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22499 to 22493. [2022-11-03 02:27:54,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22493 states, 13598 states have (on average 1.2898220326518606) internal successors, (17539), 13955 states have internal predecessors, (17539), 7058 states have call successors, (7058), 1843 states have call predecessors, (7058), 1834 states have return successors, (7093), 6968 states have call predecessors, (7093), 7046 states have call successors, (7093) [2022-11-03 02:27:54,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22493 states to 22493 states and 31690 transitions. [2022-11-03 02:27:54,416 INFO L78 Accepts]: Start accepts. Automaton has 22493 states and 31690 transitions. Word has length 366 [2022-11-03 02:27:54,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:54,417 INFO L495 AbstractCegarLoop]: Abstraction has 22493 states and 31690 transitions. [2022-11-03 02:27:54,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2022-11-03 02:27:54,418 INFO L276 IsEmpty]: Start isEmpty. Operand 22493 states and 31690 transitions. [2022-11-03 02:27:54,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2022-11-03 02:27:54,429 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:54,430 INFO L195 NwaCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 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] [2022-11-03 02:27:54,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:27:54,430 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:27:54,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:54,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1244286580, now seen corresponding path program 1 times [2022-11-03 02:27:54,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:27:54,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791836007] [2022-11-03 02:27:54,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:54,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:27:54,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:56,932 INFO L134 CoverageAnalysis]: Checked inductivity of 3537 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3531 trivial. 0 not checked. [2022-11-03 02:27:56,932 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:27:56,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791836007] [2022-11-03 02:27:56,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791836007] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:56,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:56,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:27:56,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015080510] [2022-11-03 02:27:56,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:56,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:27:56,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:27:56,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:27:56,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:27:56,934 INFO L87 Difference]: Start difference. First operand 22493 states and 31690 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2022-11-03 02:27:59,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:11,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:13,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:18,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:28:18,563 INFO L93 Difference]: Finished difference Result 22505 states and 31698 transitions. [2022-11-03 02:28:18,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:28:18,564 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) Word has length 368 [2022-11-03 02:28:18,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:28:18,670 INFO L225 Difference]: With dead ends: 22505 [2022-11-03 02:28:18,670 INFO L226 Difference]: Without dead ends: 22503 [2022-11-03 02:28:18,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:28:18,680 INFO L413 NwaCegarLoop]: 4255 mSDtfsCounter, 3818 mSDsluCounter, 13474 mSDsCounter, 0 mSdLazyCounter, 2297 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3830 SdHoareTripleChecker+Valid, 16025 SdHoareTripleChecker+Invalid, 2302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2297 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:28:18,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3830 Valid, 16025 Invalid, 2302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2297 Invalid, 3 Unknown, 0 Unchecked, 20.8s Time] [2022-11-03 02:28:18,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22503 states. [2022-11-03 02:28:19,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22503 to 22497. [2022-11-03 02:28:19,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22497 states, 13601 states have (on average 1.2897581060216161) internal successors, (17542), 13958 states have internal predecessors, (17542), 7058 states have call successors, (7058), 1844 states have call predecessors, (7058), 1835 states have return successors, (7093), 6968 states have call predecessors, (7093), 7046 states have call successors, (7093) [2022-11-03 02:28:20,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22497 states to 22497 states and 31693 transitions. [2022-11-03 02:28:20,124 INFO L78 Accepts]: Start accepts. Automaton has 22497 states and 31693 transitions. Word has length 368 [2022-11-03 02:28:20,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:28:20,125 INFO L495 AbstractCegarLoop]: Abstraction has 22497 states and 31693 transitions. [2022-11-03 02:28:20,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2022-11-03 02:28:20,125 INFO L276 IsEmpty]: Start isEmpty. Operand 22497 states and 31693 transitions. [2022-11-03 02:28:20,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2022-11-03 02:28:20,135 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:28:20,136 INFO L195 NwaCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 4, 4, 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] [2022-11-03 02:28:20,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:28:20,136 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:28:20,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:28:20,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1067320530, now seen corresponding path program 1 times [2022-11-03 02:28:20,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:28:20,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906237504] [2022-11-03 02:28:20,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:28:20,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:28:20,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:28:21,409 INFO L134 CoverageAnalysis]: Checked inductivity of 3513 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3510 trivial. 0 not checked. [2022-11-03 02:28:21,409 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:28:21,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906237504] [2022-11-03 02:28:21,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906237504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:28:21,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:28:21,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:28:21,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867459208] [2022-11-03 02:28:21,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:28:21,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:28:21,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:28:21,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:28:21,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:28:21,411 INFO L87 Difference]: Start difference. First operand 22497 states and 31693 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2022-11-03 02:28:23,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:34,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:36,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:39,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:28:39,779 INFO L93 Difference]: Finished difference Result 52227 states and 73683 transitions. [2022-11-03 02:28:39,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:28:39,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 369 [2022-11-03 02:28:39,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:28:39,911 INFO L225 Difference]: With dead ends: 52227 [2022-11-03 02:28:39,912 INFO L226 Difference]: Without dead ends: 30332 [2022-11-03 02:28:39,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:28:39,996 INFO L413 NwaCegarLoop]: 5717 mSDtfsCounter, 2837 mSDsluCounter, 3874 mSDsCounter, 0 mSdLazyCounter, 1631 mSolverCounterSat, 15 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2837 SdHoareTripleChecker+Valid, 9037 SdHoareTripleChecker+Invalid, 1649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1631 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:28:39,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2837 Valid, 9037 Invalid, 1649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1631 Invalid, 3 Unknown, 0 Unchecked, 17.2s Time] [2022-11-03 02:28:40,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30332 states. [2022-11-03 02:28:41,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30332 to 30231. [2022-11-03 02:28:41,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30231 states, 18373 states have (on average 1.2920589996190062) internal successors, (23739), 18841 states have internal predecessors, (23739), 9411 states have call successors, (9411), 2459 states have call predecessors, (9411), 2444 states have return successors, (9451), 9284 states have call predecessors, (9451), 9399 states have call successors, (9451) [2022-11-03 02:28:42,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30231 states to 30231 states and 42601 transitions. [2022-11-03 02:28:42,180 INFO L78 Accepts]: Start accepts. Automaton has 30231 states and 42601 transitions. Word has length 369 [2022-11-03 02:28:42,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:28:42,181 INFO L495 AbstractCegarLoop]: Abstraction has 30231 states and 42601 transitions. [2022-11-03 02:28:42,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2022-11-03 02:28:42,182 INFO L276 IsEmpty]: Start isEmpty. Operand 30231 states and 42601 transitions. [2022-11-03 02:28:42,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2022-11-03 02:28:42,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:28:42,192 INFO L195 NwaCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 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] [2022-11-03 02:28:42,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:28:42,193 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:28:42,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:28:42,193 INFO L85 PathProgramCache]: Analyzing trace with hash -960992186, now seen corresponding path program 1 times [2022-11-03 02:28:42,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:28:42,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587214704] [2022-11-03 02:28:42,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:28:42,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:28:43,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:28:44,689 INFO L134 CoverageAnalysis]: Checked inductivity of 3559 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3551 trivial. 0 not checked. [2022-11-03 02:28:44,689 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:28:44,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587214704] [2022-11-03 02:28:44,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587214704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:28:44,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:28:44,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:28:44,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187033160] [2022-11-03 02:28:44,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:28:44,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:28:44,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:28:44,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:28:44,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:28:44,692 INFO L87 Difference]: Start difference. First operand 30231 states and 42601 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2022-11-03 02:28:46,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:59,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:29:01,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:29:07,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:07,348 INFO L93 Difference]: Finished difference Result 30243 states and 42609 transitions. [2022-11-03 02:29:07,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:29:07,348 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 377 [2022-11-03 02:29:07,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:07,481 INFO L225 Difference]: With dead ends: 30243 [2022-11-03 02:29:07,481 INFO L226 Difference]: Without dead ends: 30241 [2022-11-03 02:29:07,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:29:07,495 INFO L413 NwaCegarLoop]: 4255 mSDtfsCounter, 3817 mSDsluCounter, 13474 mSDsCounter, 0 mSdLazyCounter, 2297 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3828 SdHoareTripleChecker+Valid, 16025 SdHoareTripleChecker+Invalid, 2302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2297 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:07,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3828 Valid, 16025 Invalid, 2302 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 2297 Invalid, 3 Unknown, 0 Unchecked, 21.6s Time] [2022-11-03 02:29:07,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30241 states. [2022-11-03 02:29:08,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30241 to 30235. [2022-11-03 02:29:08,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30235 states, 18376 states have (on average 1.2920113191118852) internal successors, (23742), 18844 states have internal predecessors, (23742), 9411 states have call successors, (9411), 2460 states have call predecessors, (9411), 2445 states have return successors, (9451), 9284 states have call predecessors, (9451), 9399 states have call successors, (9451) [2022-11-03 02:29:08,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30235 states to 30235 states and 42604 transitions. [2022-11-03 02:29:08,936 INFO L78 Accepts]: Start accepts. Automaton has 30235 states and 42604 transitions. Word has length 377 [2022-11-03 02:29:08,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:08,937 INFO L495 AbstractCegarLoop]: Abstraction has 30235 states and 42604 transitions. [2022-11-03 02:29:08,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2022-11-03 02:29:08,937 INFO L276 IsEmpty]: Start isEmpty. Operand 30235 states and 42604 transitions. [2022-11-03 02:29:08,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2022-11-03 02:29:08,947 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:08,947 INFO L195 NwaCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 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] [2022-11-03 02:29:08,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:29:08,948 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:29:08,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:08,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1774340876, now seen corresponding path program 1 times [2022-11-03 02:29:08,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:29:08,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135181693] [2022-11-03 02:29:08,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:08,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:29:09,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:11,258 INFO L134 CoverageAnalysis]: Checked inductivity of 3569 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3559 trivial. 0 not checked. [2022-11-03 02:29:11,258 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:29:11,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135181693] [2022-11-03 02:29:11,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135181693] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:29:11,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:29:11,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:29:11,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176008391] [2022-11-03 02:29:11,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:29:11,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:29:11,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:29:11,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:29:11,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:29:11,260 INFO L87 Difference]: Start difference. First operand 30235 states and 42604 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2022-11-03 02:29:13,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:29:25,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:29:27,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:29:33,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:33,087 INFO L93 Difference]: Finished difference Result 30247 states and 42612 transitions. [2022-11-03 02:29:33,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:29:33,088 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 378 [2022-11-03 02:29:33,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:33,194 INFO L225 Difference]: With dead ends: 30247 [2022-11-03 02:29:33,194 INFO L226 Difference]: Without dead ends: 30245 [2022-11-03 02:29:33,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:29:33,212 INFO L413 NwaCegarLoop]: 4255 mSDtfsCounter, 3818 mSDsluCounter, 13474 mSDsCounter, 0 mSdLazyCounter, 2297 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3828 SdHoareTripleChecker+Valid, 16025 SdHoareTripleChecker+Invalid, 2302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2297 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:33,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3828 Valid, 16025 Invalid, 2302 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 2297 Invalid, 3 Unknown, 0 Unchecked, 20.5s Time] [2022-11-03 02:29:33,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30245 states. [2022-11-03 02:29:34,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30245 to 30239. [2022-11-03 02:29:34,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30239 states, 18379 states have (on average 1.2919636541705206) internal successors, (23745), 18847 states have internal predecessors, (23745), 9411 states have call successors, (9411), 2461 states have call predecessors, (9411), 2446 states have return successors, (9451), 9284 states have call predecessors, (9451), 9399 states have call successors, (9451) [2022-11-03 02:29:34,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30239 states to 30239 states and 42607 transitions. [2022-11-03 02:29:34,719 INFO L78 Accepts]: Start accepts. Automaton has 30239 states and 42607 transitions. Word has length 378 [2022-11-03 02:29:34,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:34,720 INFO L495 AbstractCegarLoop]: Abstraction has 30239 states and 42607 transitions. [2022-11-03 02:29:34,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2022-11-03 02:29:34,721 INFO L276 IsEmpty]: Start isEmpty. Operand 30239 states and 42607 transitions. [2022-11-03 02:29:34,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2022-11-03 02:29:34,728 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:34,728 INFO L195 NwaCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 7, 6, 6, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:29:34,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 02:29:34,729 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:29:34,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:34,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1765070440, now seen corresponding path program 1 times [2022-11-03 02:29:34,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:29:34,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698772572] [2022-11-03 02:29:34,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:34,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:29:35,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:36,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3598 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3586 trivial. 0 not checked. [2022-11-03 02:29:36,870 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:29:36,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698772572] [2022-11-03 02:29:36,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698772572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:29:36,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:29:36,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:29:36,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345478895] [2022-11-03 02:29:36,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:29:36,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:29:36,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:29:36,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:29:36,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:29:36,871 INFO L87 Difference]: Start difference. First operand 30239 states and 42607 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2022-11-03 02:29:39,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:29:50,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:29:57,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:29:59,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:30:03,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:30:03,767 INFO L93 Difference]: Finished difference Result 58928 states and 83171 transitions. [2022-11-03 02:30:03,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:30:03,768 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) Word has length 386 [2022-11-03 02:30:03,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:30:04,014 INFO L225 Difference]: With dead ends: 58928 [2022-11-03 02:30:04,014 INFO L226 Difference]: Without dead ends: 58926 [2022-11-03 02:30:04,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:30:04,030 INFO L413 NwaCegarLoop]: 4376 mSDtfsCounter, 3810 mSDsluCounter, 13682 mSDsCounter, 0 mSdLazyCounter, 2368 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3819 SdHoareTripleChecker+Valid, 16313 SdHoareTripleChecker+Invalid, 2375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2368 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:30:04,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3819 Valid, 16313 Invalid, 2375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2368 Invalid, 4 Unknown, 0 Unchecked, 24.9s Time] [2022-11-03 02:30:04,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58926 states. [2022-11-03 02:30:06,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58926 to 58899. [2022-11-03 02:30:06,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58899 states, 35775 states have (on average 1.2911250873515026) internal successors, (46190), 36666 states have internal predecessors, (46190), 18331 states have call successors, (18331), 4832 states have call predecessors, (18331), 4790 states have return successors, (18622), 18044 states have call predecessors, (18622), 18307 states have call successors, (18622) [2022-11-03 02:30:06,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58899 states to 58899 states and 83143 transitions. [2022-11-03 02:30:06,721 INFO L78 Accepts]: Start accepts. Automaton has 58899 states and 83143 transitions. Word has length 386 [2022-11-03 02:30:06,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:30:06,722 INFO L495 AbstractCegarLoop]: Abstraction has 58899 states and 83143 transitions. [2022-11-03 02:30:06,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2022-11-03 02:30:06,722 INFO L276 IsEmpty]: Start isEmpty. Operand 58899 states and 83143 transitions. [2022-11-03 02:30:06,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2022-11-03 02:30:06,731 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:30:06,732 INFO L195 NwaCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 8, 7, 7, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:30:06,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 02:30:06,732 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:30:06,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:30:06,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1663102706, now seen corresponding path program 1 times [2022-11-03 02:30:06,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:30:06,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106173558] [2022-11-03 02:30:06,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:06,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:30:07,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:30:08,992 INFO L134 CoverageAnalysis]: Checked inductivity of 3624 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3610 trivial. 0 not checked. [2022-11-03 02:30:08,992 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:30:08,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106173558] [2022-11-03 02:30:08,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106173558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:30:08,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:30:08,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:30:08,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205894273] [2022-11-03 02:30:08,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:30:08,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:30:08,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:30:08,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:30:08,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:30:08,995 INFO L87 Difference]: Start difference. First operand 58899 states and 83143 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 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) [2022-11-03 02:30:11,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:30:20,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:30:26,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:30:28,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:30:35,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:30:35,295 INFO L93 Difference]: Finished difference Result 58915 states and 83155 transitions. [2022-11-03 02:30:35,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:30:35,296 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 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 391 [2022-11-03 02:30:35,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:30:35,477 INFO L225 Difference]: With dead ends: 58915 [2022-11-03 02:30:35,477 INFO L226 Difference]: Without dead ends: 58913 [2022-11-03 02:30:35,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:30:35,501 INFO L413 NwaCegarLoop]: 4255 mSDtfsCounter, 3817 mSDsluCounter, 13474 mSDsCounter, 0 mSdLazyCounter, 2297 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3825 SdHoareTripleChecker+Valid, 16025 SdHoareTripleChecker+Invalid, 2302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2297 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:30:35,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3825 Valid, 16025 Invalid, 2302 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 2297 Invalid, 3 Unknown, 0 Unchecked, 24.2s Time] [2022-11-03 02:30:35,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58913 states. [2022-11-03 02:30:37,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58913 to 58907. [2022-11-03 02:30:37,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58907 states, 35781 states have (on average 1.2910762695285207) internal successors, (46196), 36672 states have internal predecessors, (46196), 18331 states have call successors, (18331), 4834 states have call predecessors, (18331), 4792 states have return successors, (18622), 18044 states have call predecessors, (18622), 18307 states have call successors, (18622) [2022-11-03 02:30:38,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58907 states to 58907 states and 83149 transitions. [2022-11-03 02:30:38,325 INFO L78 Accepts]: Start accepts. Automaton has 58907 states and 83149 transitions. Word has length 391 [2022-11-03 02:30:38,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:30:38,326 INFO L495 AbstractCegarLoop]: Abstraction has 58907 states and 83149 transitions. [2022-11-03 02:30:38,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 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) [2022-11-03 02:30:38,327 INFO L276 IsEmpty]: Start isEmpty. Operand 58907 states and 83149 transitions. [2022-11-03 02:30:38,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2022-11-03 02:30:38,336 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:30:38,336 INFO L195 NwaCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 9, 8, 8, 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] [2022-11-03 02:30:38,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 02:30:38,337 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:30:38,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:30:38,337 INFO L85 PathProgramCache]: Analyzing trace with hash 548363334, now seen corresponding path program 1 times [2022-11-03 02:30:38,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:30:38,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5124090] [2022-11-03 02:30:38,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:38,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:30:39,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:30:40,225 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 3639 trivial. 0 not checked. [2022-11-03 02:30:40,225 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:30:40,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5124090] [2022-11-03 02:30:40,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5124090] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:30:40,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:30:40,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:30:40,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470259409] [2022-11-03 02:30:40,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:30:40,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:30:40,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:30:40,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:30:40,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:30:40,227 INFO L87 Difference]: Start difference. First operand 58907 states and 83149 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2022-11-03 02:30:42,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:30:53,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:31:00,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:31:02,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:31:07,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:31:07,455 INFO L93 Difference]: Finished difference Result 68938 states and 97186 transitions. [2022-11-03 02:31:07,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:31:07,456 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 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 397 [2022-11-03 02:31:07,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:31:07,698 INFO L225 Difference]: With dead ends: 68938 [2022-11-03 02:31:07,698 INFO L226 Difference]: Without dead ends: 68936 [2022-11-03 02:31:07,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:31:07,720 INFO L413 NwaCegarLoop]: 4391 mSDtfsCounter, 3816 mSDsluCounter, 13805 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3823 SdHoareTripleChecker+Valid, 16433 SdHoareTripleChecker+Invalid, 2392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:31:07,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3823 Valid, 16433 Invalid, 2392 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 2386 Invalid, 4 Unknown, 0 Unchecked, 24.4s Time] [2022-11-03 02:31:07,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68936 states. [2022-11-03 02:31:10,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68936 to 68927. [2022-11-03 02:31:10,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68927 states, 41866 states have (on average 1.2908804280322934) internal successors, (54044), 42918 states have internal predecessors, (54044), 21423 states have call successors, (21423), 5682 states have call predecessors, (21423), 5635 states have return successors, (21711), 21092 states have call predecessors, (21711), 21395 states have call successors, (21711) [2022-11-03 02:31:11,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68927 states to 68927 states and 97178 transitions. [2022-11-03 02:31:11,185 INFO L78 Accepts]: Start accepts. Automaton has 68927 states and 97178 transitions. Word has length 397 [2022-11-03 02:31:11,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:31:11,185 INFO L495 AbstractCegarLoop]: Abstraction has 68927 states and 97178 transitions. [2022-11-03 02:31:11,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2022-11-03 02:31:11,186 INFO L276 IsEmpty]: Start isEmpty. Operand 68927 states and 97178 transitions. [2022-11-03 02:31:11,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2022-11-03 02:31:11,196 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:31:11,196 INFO L195 NwaCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 10, 9, 9, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:31:11,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 02:31:11,196 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:31:11,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:31:11,197 INFO L85 PathProgramCache]: Analyzing trace with hash 485460640, now seen corresponding path program 1 times [2022-11-03 02:31:11,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:31:11,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648584001] [2022-11-03 02:31:11,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:31:11,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:31:11,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:31:13,235 INFO L134 CoverageAnalysis]: Checked inductivity of 3689 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 3671 trivial. 0 not checked. [2022-11-03 02:31:13,236 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:31:13,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648584001] [2022-11-03 02:31:13,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648584001] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:31:13,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:31:13,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:31:13,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603819924] [2022-11-03 02:31:13,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:31:13,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:31:13,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:31:13,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:31:13,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:31:13,238 INFO L87 Difference]: Start difference. First operand 68927 states and 97178 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-03 02:31:15,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:31:30,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:31:32,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:31:38,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:31:38,961 INFO L93 Difference]: Finished difference Result 104943 states and 147938 transitions. [2022-11-03 02:31:38,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:31:38,962 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 402 [2022-11-03 02:31:38,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:31:39,431 INFO L225 Difference]: With dead ends: 104943 [2022-11-03 02:31:39,431 INFO L226 Difference]: Without dead ends: 104941 [2022-11-03 02:31:39,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:31:39,467 INFO L413 NwaCegarLoop]: 4121 mSDtfsCounter, 3727 mSDsluCounter, 12659 mSDsCounter, 0 mSdLazyCounter, 2231 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3733 SdHoareTripleChecker+Valid, 15143 SdHoareTripleChecker+Invalid, 2237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2231 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:31:39,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3733 Valid, 15143 Invalid, 2237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2231 Invalid, 3 Unknown, 0 Unchecked, 22.1s Time] [2022-11-03 02:31:39,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104941 states. [2022-11-03 02:31:44,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104941 to 104919. [2022-11-03 02:31:44,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104919 states, 63869 states have (on average 1.2930686248414724) internal successors, (82587), 65535 states have internal predecessors, (82587), 32237 states have call successors, (32237), 8997 states have call predecessors, (32237), 8810 states have return successors, (33087), 31476 states have call predecessors, (33087), 32193 states have call successors, (33087) [2022-11-03 02:31:45,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104919 states to 104919 states and 147911 transitions. [2022-11-03 02:31:45,186 INFO L78 Accepts]: Start accepts. Automaton has 104919 states and 147911 transitions. Word has length 402 [2022-11-03 02:31:45,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:31:45,186 INFO L495 AbstractCegarLoop]: Abstraction has 104919 states and 147911 transitions. [2022-11-03 02:31:45,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-03 02:31:45,187 INFO L276 IsEmpty]: Start isEmpty. Operand 104919 states and 147911 transitions. [2022-11-03 02:31:45,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2022-11-03 02:31:45,193 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:31:45,193 INFO L195 NwaCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 11, 10, 10, 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] [2022-11-03 02:31:45,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 02:31:45,193 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:31:45,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:31:45,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1312216718, now seen corresponding path program 1 times [2022-11-03 02:31:45,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:31:45,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803869707] [2022-11-03 02:31:45,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:31:45,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:31:45,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:31:47,137 INFO L134 CoverageAnalysis]: Checked inductivity of 3719 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 3699 trivial. 0 not checked. [2022-11-03 02:31:47,137 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:31:47,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803869707] [2022-11-03 02:31:47,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803869707] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:31:47,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:31:47,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:31:47,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617673539] [2022-11-03 02:31:47,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:31:47,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:31:47,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:31:47,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:31:47,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:31:47,140 INFO L87 Difference]: Start difference. First operand 104919 states and 147911 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2022-11-03 02:31:49,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []