./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-mutex_drivers-net-ethernet-micrel-ks8851.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_ae365bbc-5e22-449e-b18e-b7c66a41cd3c/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae365bbc-5e22-449e-b18e-b7c66a41cd3c/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_ae365bbc-5e22-449e-b18e-b7c66a41cd3c/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae365bbc-5e22-449e-b18e-b7c66a41cd3c/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae365bbc-5e22-449e-b18e-b7c66a41cd3c/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_ae365bbc-5e22-449e-b18e-b7c66a41cd3c/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 adad89b7f673beaaf8bb114b70e1447440d8d3333aba6712cecf0b1e8decf472 --- 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 02:50:43,096 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:50:43,098 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:50:43,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:50:43,135 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:50:43,139 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:50:43,142 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:50:43,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:50:43,149 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:50:43,154 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:50:43,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:50:43,158 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:50:43,159 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:50:43,161 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:50:43,164 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:50:43,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:50:43,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:50:43,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:50:43,170 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:50:43,177 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:50:43,179 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:50:43,180 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:50:43,181 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:50:43,182 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:50:43,188 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:50:43,188 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:50:43,188 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:50:43,189 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:50:43,190 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:50:43,191 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:50:43,191 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:50:43,192 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:50:43,193 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:50:43,194 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:50:43,194 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:50:43,195 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:50:43,195 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:50:43,196 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:50:43,196 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:50:43,197 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:50:43,202 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:50:43,204 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae365bbc-5e22-449e-b18e-b7c66a41cd3c/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:50:43,241 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:50:43,245 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:50:43,245 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:50:43,246 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:50:43,247 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:50:43,247 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:50:43,247 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:50:43,247 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:50:43,247 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:50:43,248 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:50:43,249 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:50:43,249 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:50:43,249 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:50:43,249 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:50:43,249 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:50:43,249 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:50:43,250 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:50:43,250 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:50:43,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:50:43,251 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:50:43,251 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:50:43,251 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:50:43,251 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:50:43,253 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:50:43,253 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:50:43,253 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:50:43,253 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:50:43,254 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:50:43,254 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:50:43,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:50:43,254 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:50:43,254 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:50:43,255 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:50:43,255 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:50:43,255 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:50:43,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:50:43,256 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:50:43,256 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:50:43,256 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_ae365bbc-5e22-449e-b18e-b7c66a41cd3c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae365bbc-5e22-449e-b18e-b7c66a41cd3c/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adad89b7f673beaaf8bb114b70e1447440d8d3333aba6712cecf0b1e8decf472 [2022-11-03 02:50:43,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:50:43,654 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:50:43,657 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:50:43,659 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:50:43,659 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:50:43,661 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae365bbc-5e22-449e-b18e-b7c66a41cd3c/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i [2022-11-03 02:50:43,748 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae365bbc-5e22-449e-b18e-b7c66a41cd3c/bin/utaipan-7li7fVZpFI/data/0ad29e6cb/b5a50acedd3043169b64d8acc8c079a9/FLAG87a51b2f4 [2022-11-03 02:50:44,676 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:50:44,677 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae365bbc-5e22-449e-b18e-b7c66a41cd3c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i [2022-11-03 02:50:44,748 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae365bbc-5e22-449e-b18e-b7c66a41cd3c/bin/utaipan-7li7fVZpFI/data/0ad29e6cb/b5a50acedd3043169b64d8acc8c079a9/FLAG87a51b2f4 [2022-11-03 02:50:45,078 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae365bbc-5e22-449e-b18e-b7c66a41cd3c/bin/utaipan-7li7fVZpFI/data/0ad29e6cb/b5a50acedd3043169b64d8acc8c079a9 [2022-11-03 02:50:45,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:50:45,084 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:50:45,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:50:45,089 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:50:45,092 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:50:45,094 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:50:45" (1/1) ... [2022-11-03 02:50:45,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f65ab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:50:45, skipping insertion in model container [2022-11-03 02:50:45,095 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:50:45" (1/1) ... [2022-11-03 02:50:45,104 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:50:45,249 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:50:47,877 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_ae365bbc-5e22-449e-b18e-b7c66a41cd3c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[295786,295799] [2022-11-03 02:50:47,886 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_ae365bbc-5e22-449e-b18e-b7c66a41cd3c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[295952,295965] [2022-11-03 02:50:47,887 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_ae365bbc-5e22-449e-b18e-b7c66a41cd3c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[296116,296129] [2022-11-03 02:50:47,888 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_ae365bbc-5e22-449e-b18e-b7c66a41cd3c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[296281,296294] [2022-11-03 02:50:47,954 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:50:47,995 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:50:48,405 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_ae365bbc-5e22-449e-b18e-b7c66a41cd3c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[295786,295799] [2022-11-03 02:50:48,405 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_ae365bbc-5e22-449e-b18e-b7c66a41cd3c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[295952,295965] [2022-11-03 02:50:48,406 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_ae365bbc-5e22-449e-b18e-b7c66a41cd3c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[296116,296129] [2022-11-03 02:50:48,407 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_ae365bbc-5e22-449e-b18e-b7c66a41cd3c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[296281,296294] [2022-11-03 02:50:48,417 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:50:48,663 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:50:48,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:50:48 WrapperNode [2022-11-03 02:50:48,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:50:48,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:50:48,665 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:50:48,666 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:50:48,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:50:48" (1/1) ... [2022-11-03 02:50:48,775 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:50:48" (1/1) ... [2022-11-03 02:50:48,945 INFO L138 Inliner]: procedures = 396, calls = 1613, calls flagged for inlining = 229, calls inlined = 191, statements flattened = 3922 [2022-11-03 02:50:48,946 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:50:48,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:50:48,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:50:48,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:50:48,957 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:50:48" (1/1) ... [2022-11-03 02:50:48,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:50:48" (1/1) ... [2022-11-03 02:50:48,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:50:48" (1/1) ... [2022-11-03 02:50:48,979 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:50:48" (1/1) ... [2022-11-03 02:50:49,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:50:48" (1/1) ... [2022-11-03 02:50:49,099 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:50:48" (1/1) ... [2022-11-03 02:50:49,134 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:50:48" (1/1) ... [2022-11-03 02:50:49,155 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:50:48" (1/1) ... [2022-11-03 02:50:49,188 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:50:49,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:50:49,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:50:49,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:50:49,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:50:48" (1/1) ... [2022-11-03 02:50:49,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:50:49,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae365bbc-5e22-449e-b18e-b7c66a41cd3c/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:50:49,227 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae365bbc-5e22-449e-b18e-b7c66a41cd3c/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:50:49,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae365bbc-5e22-449e-b18e-b7c66a41cd3c/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:50:49,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:50:49,266 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:50:49,266 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:50:49,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:50:49,267 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_ks8851_driver_exit_14_2 [2022-11-03 02:50:49,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_ks8851_driver_exit_14_2 [2022-11-03 02:50:49,267 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-03 02:50:49,267 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-03 02:50:49,267 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_resume [2022-11-03 02:50:49,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_resume [2022-11-03 02:50:49,268 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 02:50:49,268 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 02:50:49,268 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2022-11-03 02:50:49,268 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2022-11-03 02:50:49,268 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-03 02:50:49,268 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_net_stop [2022-11-03 02:50:49,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_net_stop [2022-11-03 02:50:49,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 02:50:49,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 02:50:49,269 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-03 02:50:49,269 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-03 02:50:49,269 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-03 02:50:49,269 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-03 02:50:49,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 02:50:49,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 02:50:49,270 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-03 02:50:49,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-03 02:50:49,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:50:49,270 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2022-11-03 02:50:49,270 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2022-11-03 02:50:49,270 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 02:50:49,270 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 02:50:49,270 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-03 02:50:49,271 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-03 02:50:49,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:50:49,271 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 02:50:49,271 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 02:50:49,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:50:49,271 INFO L130 BoogieDeclarations]: Found specification of procedure flush_work [2022-11-03 02:50:49,271 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_work [2022-11-03 02:50:49,272 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 02:50:49,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 02:50:49,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:50:49,272 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_disable [2022-11-03 02:50:49,272 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_disable [2022-11-03 02:50:49,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 02:50:49,272 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 02:50:49,272 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-03 02:50:49,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-03 02:50:49,273 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_ks8851_net [2022-11-03 02:50:49,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_ks8851_net [2022-11-03 02:50:49,273 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_rdreg8 [2022-11-03 02:50:49,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_rdreg8 [2022-11-03 02:50:49,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:50:49,273 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-03 02:50:49,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-03 02:50:49,274 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-03 02:50:49,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-03 02:50:49,274 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2022-11-03 02:50:49,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2022-11-03 02:50:49,274 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2022-11-03 02:50:49,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2022-11-03 02:50:49,274 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_rdreg16 [2022-11-03 02:50:49,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_rdreg16 [2022-11-03 02:50:49,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:50:49,275 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-03 02:50:49,275 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-03 02:50:49,275 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_probe [2022-11-03 02:50:49,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_probe [2022-11-03 02:50:49,275 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 02:50:49,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 02:50:49,275 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 02:50:49,275 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 02:50:49,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:50:49,276 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:50:49,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:50:49,276 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-03 02:50:49,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-03 02:50:49,276 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_put [2022-11-03 02:50:49,276 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_put [2022-11-03 02:50:49,276 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_ks8851_net [2022-11-03 02:50:49,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_ks8851_net [2022-11-03 02:50:49,277 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-03 02:50:49,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-03 02:50:49,277 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 02:50:49,277 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 02:50:49,277 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_write_mac_addr [2022-11-03 02:50:49,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_write_mac_addr [2022-11-03 02:50:49,277 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-03 02:50:49,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-03 02:50:49,278 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_suspend [2022-11-03 02:50:49,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_suspend [2022-11-03 02:50:49,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:50:49,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:50:49,278 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 02:50:49,278 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 02:50:49,278 INFO L130 BoogieDeclarations]: Found specification of procedure skb_dequeue [2022-11-03 02:50:49,278 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_dequeue [2022-11-03 02:50:49,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:50:49,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:50:49,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:50:49,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:50:49,279 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_net_open [2022-11-03 02:50:49,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_net_open [2022-11-03 02:50:49,279 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2022-11-03 02:50:49,279 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2022-11-03 02:50:49,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 02:50:49,280 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 02:50:49,280 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 02:50:49,280 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 02:50:49,280 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2022-11-03 02:50:49,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2022-11-03 02:50:49,280 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2022-11-03 02:50:49,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2022-11-03 02:50:49,280 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_set_rx_mode [2022-11-03 02:50:49,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_set_rx_mode [2022-11-03 02:50:49,281 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-03 02:50:49,281 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-03 02:50:49,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:50:49,281 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 02:50:49,281 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 02:50:49,281 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_set_powermode [2022-11-03 02:50:49,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_set_powermode [2022-11-03 02:50:49,281 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-03 02:50:49,281 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-03 02:50:49,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:50:49,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:50:49,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2022-11-03 02:50:49,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2022-11-03 02:50:49,282 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 02:50:49,282 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 02:50:49,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 02:50:49,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 02:50:49,282 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-03 02:50:49,282 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-03 02:50:49,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-03 02:50:49,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-03 02:50:49,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-03 02:50:49,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-03 02:50:49,283 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-03 02:50:49,283 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-03 02:50:49,283 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 02:50:49,283 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 02:50:49,283 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_rx_1msg [2022-11-03 02:50:49,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_rx_1msg [2022-11-03 02:50:49,284 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_get_eeprom_len [2022-11-03 02:50:49,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_get_eeprom_len [2022-11-03 02:50:49,284 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_soft_reset [2022-11-03 02:50:49,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_soft_reset [2022-11-03 02:50:49,284 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-03 02:50:49,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-03 02:50:49,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:50:49,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:50:49,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:50:49,285 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_rdreg [2022-11-03 02:50:49,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_rdreg [2022-11-03 02:50:49,285 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_nway_reset [2022-11-03 02:50:49,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_nway_reset [2022-11-03 02:50:49,285 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2022-11-03 02:50:49,285 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2022-11-03 02:50:49,285 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_remove [2022-11-03 02:50:49,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_remove [2022-11-03 02:50:49,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 02:50:49,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 02:50:49,286 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-03 02:50:49,286 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-03 02:50:49,286 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_wrreg16 [2022-11-03 02:50:49,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_wrreg16 [2022-11-03 02:50:49,286 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-03 02:50:49,286 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-03 02:50:49,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:50:49,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 02:50:49,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 02:50:50,128 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:50:50,134 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:50:51,940 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:50:54,522 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-03 02:50:54,738 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:50:55,636 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:50:55,636 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-03 02:50:55,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:50:55 BoogieIcfgContainer [2022-11-03 02:50:55,649 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:50:55,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:50:55,653 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:50:55,656 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:50:55,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:50:45" (1/3) ... [2022-11-03 02:50:55,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f371a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:50:55, skipping insertion in model container [2022-11-03 02:50:55,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:50:48" (2/3) ... [2022-11-03 02:50:55,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f371a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:50:55, skipping insertion in model container [2022-11-03 02:50:55,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:50:55" (3/3) ... [2022-11-03 02:50:55,661 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i [2022-11-03 02:50:55,683 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:50:55,683 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-03 02:50:55,799 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:50:55,807 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;@7980a346, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:50:55,807 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-03 02:50:55,817 INFO L276 IsEmpty]: Start isEmpty. Operand has 1118 states, 674 states have (on average 1.3293768545994065) internal successors, (896), 687 states have internal predecessors, (896), 366 states have call successors, (366), 78 states have call predecessors, (366), 77 states have return successors, (357), 356 states have call predecessors, (357), 357 states have call successors, (357) [2022-11-03 02:50:55,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-11-03 02:50:55,853 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:50:55,854 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:50:55,854 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:50:55,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:50:55,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1867949063, now seen corresponding path program 1 times [2022-11-03 02:50:55,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:50:55,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375508475] [2022-11-03 02:50:55,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:50:55,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:50:56,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:50:56,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2022-11-03 02:50:56,757 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:50:56,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375508475] [2022-11-03 02:50:56,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375508475] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:50:56,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:50:56,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:50:56,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647790346] [2022-11-03 02:50:56,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:50:56,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:50:56,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:50:56,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:50:56,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:50:56,797 INFO L87 Difference]: Start difference. First operand has 1118 states, 674 states have (on average 1.3293768545994065) internal successors, (896), 687 states have internal predecessors, (896), 366 states have call successors, (366), 78 states have call predecessors, (366), 77 states have return successors, (357), 356 states have call predecessors, (357), 357 states have call successors, (357) Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-03 02:50:59,784 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 02:51:02,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:02,509 INFO L93 Difference]: Finished difference Result 3129 states and 4718 transitions. [2022-11-03 02:51:02,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:51:02,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 191 [2022-11-03 02:51:02,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:02,546 INFO L225 Difference]: With dead ends: 3129 [2022-11-03 02:51:02,546 INFO L226 Difference]: Without dead ends: 2028 [2022-11-03 02:51:02,565 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 02:51:02,568 INFO L413 NwaCegarLoop]: 1643 mSDtfsCounter, 1399 mSDsluCounter, 1578 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1401 SdHoareTripleChecker+Valid, 2952 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:02,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1401 Valid, 2952 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 563 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2022-11-03 02:51:02,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2028 states. [2022-11-03 02:51:02,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2028 to 2007. [2022-11-03 02:51:02,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2007 states, 1213 states have (on average 1.3281121187139324) internal successors, (1611), 1240 states have internal predecessors, (1611), 642 states have call successors, (642), 152 states have call predecessors, (642), 149 states have return successors, (682), 626 states have call predecessors, (682), 638 states have call successors, (682) [2022-11-03 02:51:02,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2007 states to 2007 states and 2935 transitions. [2022-11-03 02:51:02,828 INFO L78 Accepts]: Start accepts. Automaton has 2007 states and 2935 transitions. Word has length 191 [2022-11-03 02:51:02,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:02,837 INFO L495 AbstractCegarLoop]: Abstraction has 2007 states and 2935 transitions. [2022-11-03 02:51:02,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-03 02:51:02,837 INFO L276 IsEmpty]: Start isEmpty. Operand 2007 states and 2935 transitions. [2022-11-03 02:51:02,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-11-03 02:51:02,857 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:02,858 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 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] [2022-11-03 02:51:02,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:51:02,858 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:51:02,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:02,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1705722180, now seen corresponding path program 1 times [2022-11-03 02:51:02,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:51:02,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139842589] [2022-11-03 02:51:02,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:02,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:51:02,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:03,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1125 trivial. 0 not checked. [2022-11-03 02:51:03,342 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:51:03,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139842589] [2022-11-03 02:51:03,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139842589] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:03,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:03,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:51:03,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087777756] [2022-11-03 02:51:03,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:03,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:51:03,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:51:03,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:51:03,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:51:03,352 INFO L87 Difference]: Start difference. First operand 2007 states and 2935 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-03 02:51:06,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:51:08,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:08,836 INFO L93 Difference]: Finished difference Result 5864 states and 8574 transitions. [2022-11-03 02:51:08,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:51:08,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 195 [2022-11-03 02:51:08,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:08,872 INFO L225 Difference]: With dead ends: 5864 [2022-11-03 02:51:08,872 INFO L226 Difference]: Without dead ends: 3892 [2022-11-03 02:51:08,886 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 02:51:08,887 INFO L413 NwaCegarLoop]: 1608 mSDtfsCounter, 1460 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1460 SdHoareTripleChecker+Valid, 2864 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:08,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1460 Valid, 2864 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-03 02:51:08,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3892 states. [2022-11-03 02:51:09,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3892 to 3888. [2022-11-03 02:51:09,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3888 states, 2368 states have (on average 1.3272804054054055) internal successors, (3143), 2414 states have internal predecessors, (3143), 1222 states have call successors, (1222), 300 states have call predecessors, (1222), 295 states have return successors, (1306), 1197 states have call predecessors, (1306), 1218 states have call successors, (1306) [2022-11-03 02:51:09,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3888 states to 3888 states and 5671 transitions. [2022-11-03 02:51:09,196 INFO L78 Accepts]: Start accepts. Automaton has 3888 states and 5671 transitions. Word has length 195 [2022-11-03 02:51:09,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:09,197 INFO L495 AbstractCegarLoop]: Abstraction has 3888 states and 5671 transitions. [2022-11-03 02:51:09,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-03 02:51:09,198 INFO L276 IsEmpty]: Start isEmpty. Operand 3888 states and 5671 transitions. [2022-11-03 02:51:09,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-11-03 02:51:09,202 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:09,203 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:51:09,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:51:09,203 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:51:09,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:09,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1827929935, now seen corresponding path program 1 times [2022-11-03 02:51:09,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:51:09,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776339404] [2022-11-03 02:51:09,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:09,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:51:09,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:09,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2022-11-03 02:51:09,483 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:51:09,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776339404] [2022-11-03 02:51:09,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776339404] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:09,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:09,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:51:09,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029804279] [2022-11-03 02:51:09,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:09,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:51:09,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:51:09,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:51:09,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:51:09,485 INFO L87 Difference]: Start difference. First operand 3888 states and 5671 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 02:51:13,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:51:14,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:14,417 INFO L93 Difference]: Finished difference Result 11158 states and 16195 transitions. [2022-11-03 02:51:14,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:51:14,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 195 [2022-11-03 02:51:14,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:14,469 INFO L225 Difference]: With dead ends: 11158 [2022-11-03 02:51:14,469 INFO L226 Difference]: Without dead ends: 7305 [2022-11-03 02:51:14,491 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 02:51:14,496 INFO L413 NwaCegarLoop]: 1580 mSDtfsCounter, 1320 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1320 SdHoareTripleChecker+Valid, 2820 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:14,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1320 Valid, 2820 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-03 02:51:14,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7305 states. [2022-11-03 02:51:14,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7305 to 7280. [2022-11-03 02:51:14,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7280 states, 4400 states have (on average 1.3065909090909091) internal successors, (5749), 4498 states have internal predecessors, (5749), 2292 states have call successors, (2292), 594 states have call predecessors, (2292), 585 states have return successors, (2398), 2235 states have call predecessors, (2398), 2288 states have call successors, (2398) [2022-11-03 02:51:15,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7280 states to 7280 states and 10439 transitions. [2022-11-03 02:51:15,086 INFO L78 Accepts]: Start accepts. Automaton has 7280 states and 10439 transitions. Word has length 195 [2022-11-03 02:51:15,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:15,088 INFO L495 AbstractCegarLoop]: Abstraction has 7280 states and 10439 transitions. [2022-11-03 02:51:15,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 02:51:15,089 INFO L276 IsEmpty]: Start isEmpty. Operand 7280 states and 10439 transitions. [2022-11-03 02:51:15,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-11-03 02:51:15,093 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:15,094 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:51:15,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:51:15,094 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:51:15,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:15,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1043345255, now seen corresponding path program 1 times [2022-11-03 02:51:15,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:51:15,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352212336] [2022-11-03 02:51:15,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:15,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:51:15,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:15,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2022-11-03 02:51:15,469 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:51:15,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352212336] [2022-11-03 02:51:15,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352212336] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:15,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:15,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:51:15,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698225732] [2022-11-03 02:51:15,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:15,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:51:15,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:51:15,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:51:15,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:51:15,473 INFO L87 Difference]: Start difference. First operand 7280 states and 10439 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 02:51:18,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:51:20,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:51:22,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:22,112 INFO L93 Difference]: Finished difference Result 17574 states and 25122 transitions. [2022-11-03 02:51:22,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:51:22,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 196 [2022-11-03 02:51:22,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:22,173 INFO L225 Difference]: With dead ends: 17574 [2022-11-03 02:51:22,174 INFO L226 Difference]: Without dead ends: 10329 [2022-11-03 02:51:22,202 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 02:51:22,206 INFO L413 NwaCegarLoop]: 1610 mSDtfsCounter, 1414 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1414 SdHoareTripleChecker+Valid, 2877 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:22,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1414 Valid, 2877 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-03 02:51:22,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10329 states. [2022-11-03 02:51:22,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10329 to 10304. [2022-11-03 02:51:22,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10304 states, 6206 states have (on average 1.2918143731872382) internal successors, (8017), 6360 states have internal predecessors, (8017), 3232 states have call successors, (3232), 876 states have call predecessors, (3232), 863 states have return successors, (3381), 3135 states have call predecessors, (3381), 3228 states have call successors, (3381) [2022-11-03 02:51:22,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10304 states to 10304 states and 14630 transitions. [2022-11-03 02:51:22,978 INFO L78 Accepts]: Start accepts. Automaton has 10304 states and 14630 transitions. Word has length 196 [2022-11-03 02:51:22,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:22,979 INFO L495 AbstractCegarLoop]: Abstraction has 10304 states and 14630 transitions. [2022-11-03 02:51:22,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 02:51:22,981 INFO L276 IsEmpty]: Start isEmpty. Operand 10304 states and 14630 transitions. [2022-11-03 02:51:22,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-11-03 02:51:22,987 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:22,988 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 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] [2022-11-03 02:51:22,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:51:22,989 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:51:22,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:22,990 INFO L85 PathProgramCache]: Analyzing trace with hash 711528274, now seen corresponding path program 1 times [2022-11-03 02:51:22,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:51:22,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450882212] [2022-11-03 02:51:22,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:22,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:51:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:23,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1124 trivial. 0 not checked. [2022-11-03 02:51:23,328 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:51:23,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450882212] [2022-11-03 02:51:23,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450882212] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:23,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:23,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:51:23,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540383817] [2022-11-03 02:51:23,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:23,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:51:23,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:51:23,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:51:23,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:51:23,331 INFO L87 Difference]: Start difference. First operand 10304 states and 14630 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-03 02:51:26,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:51:28,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:28,585 INFO L93 Difference]: Finished difference Result 27344 states and 38807 transitions. [2022-11-03 02:51:28,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:51:28,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 219 [2022-11-03 02:51:28,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:28,684 INFO L225 Difference]: With dead ends: 27344 [2022-11-03 02:51:28,685 INFO L226 Difference]: Without dead ends: 17075 [2022-11-03 02:51:28,736 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 02:51:28,738 INFO L413 NwaCegarLoop]: 1658 mSDtfsCounter, 1464 mSDsluCounter, 1539 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 2930 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:28,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1464 Valid, 2930 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-03 02:51:28,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17075 states. [2022-11-03 02:51:29,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17075 to 17044. [2022-11-03 02:51:29,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17044 states, 10302 states have (on average 1.2887788778877889) internal successors, (13277), 10571 states have internal predecessors, (13277), 5286 states have call successors, (5286), 1482 states have call predecessors, (5286), 1453 states have return successors, (5527), 5104 states have call predecessors, (5527), 5282 states have call successors, (5527) [2022-11-03 02:51:29,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17044 states to 17044 states and 24090 transitions. [2022-11-03 02:51:29,801 INFO L78 Accepts]: Start accepts. Automaton has 17044 states and 24090 transitions. Word has length 219 [2022-11-03 02:51:29,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:29,802 INFO L495 AbstractCegarLoop]: Abstraction has 17044 states and 24090 transitions. [2022-11-03 02:51:29,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-03 02:51:29,803 INFO L276 IsEmpty]: Start isEmpty. Operand 17044 states and 24090 transitions. [2022-11-03 02:51:29,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-11-03 02:51:29,807 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:29,807 INFO L195 NwaCegarLoop]: trace histogram [19, 17, 17, 17, 17, 17, 17, 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] [2022-11-03 02:51:29,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:51:29,808 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:51:29,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:29,808 INFO L85 PathProgramCache]: Analyzing trace with hash -511341333, now seen corresponding path program 1 times [2022-11-03 02:51:29,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:51:29,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997856873] [2022-11-03 02:51:29,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:29,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:51:29,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:30,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1165 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1158 trivial. 0 not checked. [2022-11-03 02:51:30,162 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:51:30,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997856873] [2022-11-03 02:51:30,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997856873] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:30,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:30,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:51:30,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581853930] [2022-11-03 02:51:30,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:30,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:51:30,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:51:30,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:51:30,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:51:30,164 INFO L87 Difference]: Start difference. First operand 17044 states and 24090 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-03 02:51:34,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:34,972 INFO L93 Difference]: Finished difference Result 43363 states and 61380 transitions. [2022-11-03 02:51:34,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:51:34,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 215 [2022-11-03 02:51:34,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:35,138 INFO L225 Difference]: With dead ends: 43363 [2022-11-03 02:51:35,138 INFO L226 Difference]: Without dead ends: 26354 [2022-11-03 02:51:35,211 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 02:51:35,213 INFO L413 NwaCegarLoop]: 1899 mSDtfsCounter, 1429 mSDsluCounter, 1536 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1429 SdHoareTripleChecker+Valid, 3167 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:35,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1429 Valid, 3167 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-03 02:51:35,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26354 states. [2022-11-03 02:51:36,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26354 to 26305. [2022-11-03 02:51:36,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26305 states, 15994 states have (on average 1.2886707515318245) internal successors, (20611), 16458 states have internal predecessors, (20611), 8076 states have call successors, (8076), 2279 states have call predecessors, (8076), 2232 states have return successors, (8436), 7743 states have call predecessors, (8436), 8072 states have call successors, (8436) [2022-11-03 02:51:36,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26305 states to 26305 states and 37123 transitions. [2022-11-03 02:51:36,883 INFO L78 Accepts]: Start accepts. Automaton has 26305 states and 37123 transitions. Word has length 215 [2022-11-03 02:51:36,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:36,884 INFO L495 AbstractCegarLoop]: Abstraction has 26305 states and 37123 transitions. [2022-11-03 02:51:36,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-03 02:51:36,884 INFO L276 IsEmpty]: Start isEmpty. Operand 26305 states and 37123 transitions. [2022-11-03 02:51:36,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-11-03 02:51:36,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:36,890 INFO L195 NwaCegarLoop]: trace histogram [21, 17, 17, 17, 17, 17, 17, 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] [2022-11-03 02:51:36,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:51:36,890 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:51:36,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:36,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1862360621, now seen corresponding path program 1 times [2022-11-03 02:51:36,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:51:36,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190325243] [2022-11-03 02:51:36,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:36,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:51:37,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:37,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1271 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1271 trivial. 0 not checked. [2022-11-03 02:51:37,872 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:51:37,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190325243] [2022-11-03 02:51:37,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190325243] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:37,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:37,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:51:37,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320310837] [2022-11-03 02:51:37,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:37,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:51:37,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:51:37,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:51:37,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:51:37,876 INFO L87 Difference]: Start difference. First operand 26305 states and 37123 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 02:51:43,250 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 02:51:44,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:51:46,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:46,746 INFO L93 Difference]: Finished difference Result 26311 states and 37128 transitions. [2022-11-03 02:51:46,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:51:46,748 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 239 [2022-11-03 02:51:46,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:46,905 INFO L225 Difference]: With dead ends: 26311 [2022-11-03 02:51:46,905 INFO L226 Difference]: Without dead ends: 26309 [2022-11-03 02:51:46,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:51:46,921 INFO L413 NwaCegarLoop]: 1290 mSDtfsCounter, 1515 mSDsluCounter, 3135 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1518 SdHoareTripleChecker+Valid, 3865 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:46,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1518 Valid, 3865 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 850 Invalid, 1 Unknown, 0 Unchecked, 7.5s Time] [2022-11-03 02:51:46,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26309 states. [2022-11-03 02:51:48,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26309 to 26309. [2022-11-03 02:51:48,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26309 states, 15997 states have (on average 1.288616615615428) internal successors, (20614), 16461 states have internal predecessors, (20614), 8076 states have call successors, (8076), 2280 states have call predecessors, (8076), 2233 states have return successors, (8436), 7743 states have call predecessors, (8436), 8072 states have call successors, (8436) [2022-11-03 02:51:48,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26309 states to 26309 states and 37126 transitions. [2022-11-03 02:51:48,637 INFO L78 Accepts]: Start accepts. Automaton has 26309 states and 37126 transitions. Word has length 239 [2022-11-03 02:51:48,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:48,638 INFO L495 AbstractCegarLoop]: Abstraction has 26309 states and 37126 transitions. [2022-11-03 02:51:48,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 02:51:48,638 INFO L276 IsEmpty]: Start isEmpty. Operand 26309 states and 37126 transitions. [2022-11-03 02:51:48,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-11-03 02:51:48,642 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:48,643 INFO L195 NwaCegarLoop]: trace histogram [21, 17, 17, 17, 17, 17, 17, 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] [2022-11-03 02:51:48,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:51:48,643 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:51:48,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:48,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1762830743, now seen corresponding path program 1 times [2022-11-03 02:51:48,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:51:48,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170956654] [2022-11-03 02:51:48,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:48,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:51:48,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:49,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1272 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1270 trivial. 0 not checked. [2022-11-03 02:51:49,605 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:51:49,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170956654] [2022-11-03 02:51:49,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170956654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:49,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:49,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:51:49,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077919022] [2022-11-03 02:51:49,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:49,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:51:49,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:51:49,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:51:49,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:51:49,609 INFO L87 Difference]: Start difference. First operand 26309 states and 37126 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 02:51:54,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:51:56,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:56,580 INFO L93 Difference]: Finished difference Result 26315 states and 37131 transitions. [2022-11-03 02:51:56,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:51:56,581 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 243 [2022-11-03 02:51:56,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:56,716 INFO L225 Difference]: With dead ends: 26315 [2022-11-03 02:51:56,717 INFO L226 Difference]: Without dead ends: 26313 [2022-11-03 02:51:56,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:51:56,733 INFO L413 NwaCegarLoop]: 1293 mSDtfsCounter, 1510 mSDsluCounter, 3135 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 3868 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:56,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 3868 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-03 02:51:56,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26313 states. [2022-11-03 02:51:58,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26313 to 26313. [2022-11-03 02:51:58,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26313 states, 16000 states have (on average 1.2885625) internal successors, (20617), 16464 states have internal predecessors, (20617), 8076 states have call successors, (8076), 2281 states have call predecessors, (8076), 2234 states have return successors, (8436), 7743 states have call predecessors, (8436), 8072 states have call successors, (8436) [2022-11-03 02:51:58,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26313 states to 26313 states and 37129 transitions. [2022-11-03 02:51:58,789 INFO L78 Accepts]: Start accepts. Automaton has 26313 states and 37129 transitions. Word has length 243 [2022-11-03 02:51:58,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:58,790 INFO L495 AbstractCegarLoop]: Abstraction has 26313 states and 37129 transitions. [2022-11-03 02:51:58,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 02:51:58,791 INFO L276 IsEmpty]: Start isEmpty. Operand 26313 states and 37129 transitions. [2022-11-03 02:51:58,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-11-03 02:51:58,796 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:58,796 INFO L195 NwaCegarLoop]: trace histogram [21, 17, 17, 17, 17, 17, 17, 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] [2022-11-03 02:51:58,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:51:58,796 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:51:58,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:58,797 INFO L85 PathProgramCache]: Analyzing trace with hash -941548313, now seen corresponding path program 1 times [2022-11-03 02:51:58,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:51:58,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470221512] [2022-11-03 02:51:58,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:58,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:51:58,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:59,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1278 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1274 trivial. 0 not checked. [2022-11-03 02:51:59,547 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:51:59,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470221512] [2022-11-03 02:51:59,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470221512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:59,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:59,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:51:59,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403601479] [2022-11-03 02:51:59,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:59,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:51:59,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:51:59,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:51:59,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:51:59,550 INFO L87 Difference]: Start difference. First operand 26313 states and 37129 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-03 02:52:03,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:52:06,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:06,099 INFO L93 Difference]: Finished difference Result 28414 states and 39310 transitions. [2022-11-03 02:52:06,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:52:06,099 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 248 [2022-11-03 02:52:06,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:06,230 INFO L225 Difference]: With dead ends: 28414 [2022-11-03 02:52:06,230 INFO L226 Difference]: Without dead ends: 28410 [2022-11-03 02:52:06,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:52:06,247 INFO L413 NwaCegarLoop]: 1317 mSDtfsCounter, 1229 mSDsluCounter, 3547 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1230 SdHoareTripleChecker+Valid, 4249 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:06,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1230 Valid, 4249 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-03 02:52:06,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28410 states. [2022-11-03 02:52:08,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28410 to 28410. [2022-11-03 02:52:08,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28410 states, 17107 states have (on average 1.278424036943941) internal successors, (21870), 17570 states have internal predecessors, (21870), 8538 states have call successors, (8538), 2810 states have call predecessors, (8538), 2762 states have return successors, (8898), 8205 states have call predecessors, (8898), 8534 states have call successors, (8898) [2022-11-03 02:52:08,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28410 states to 28410 states and 39306 transitions. [2022-11-03 02:52:08,310 INFO L78 Accepts]: Start accepts. Automaton has 28410 states and 39306 transitions. Word has length 248 [2022-11-03 02:52:08,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:08,311 INFO L495 AbstractCegarLoop]: Abstraction has 28410 states and 39306 transitions. [2022-11-03 02:52:08,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-03 02:52:08,311 INFO L276 IsEmpty]: Start isEmpty. Operand 28410 states and 39306 transitions. [2022-11-03 02:52:08,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-11-03 02:52:08,317 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:08,317 INFO L195 NwaCegarLoop]: trace histogram [21, 17, 17, 17, 17, 17, 17, 5, 5, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:52:08,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:52:08,317 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:52:08,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:08,323 INFO L85 PathProgramCache]: Analyzing trace with hash -310850327, now seen corresponding path program 1 times [2022-11-03 02:52:08,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:52:08,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107074423] [2022-11-03 02:52:08,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:08,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:52:08,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:09,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1288 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1282 trivial. 0 not checked. [2022-11-03 02:52:09,030 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:52:09,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107074423] [2022-11-03 02:52:09,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107074423] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:09,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:09,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:52:09,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564930337] [2022-11-03 02:52:09,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:09,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:52:09,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:52:09,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:52:09,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:52:09,033 INFO L87 Difference]: Start difference. First operand 28410 states and 39306 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-03 02:52:14,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:14,652 INFO L93 Difference]: Finished difference Result 28410 states and 39306 transitions. [2022-11-03 02:52:14,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:52:14,653 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 253 [2022-11-03 02:52:14,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:14,749 INFO L225 Difference]: With dead ends: 28410 [2022-11-03 02:52:14,749 INFO L226 Difference]: Without dead ends: 28131 [2022-11-03 02:52:14,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:52:14,762 INFO L413 NwaCegarLoop]: 1291 mSDtfsCounter, 1506 mSDsluCounter, 3134 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 3865 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:14,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1506 Valid, 3865 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-03 02:52:14,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28131 states. [2022-11-03 02:52:16,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28131 to 28131. [2022-11-03 02:52:16,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28131 states, 17047 states have (on average 1.2737725112923095) internal successors, (21714), 17414 states have internal predecessors, (21714), 8339 states have call successors, (8339), 2773 states have call predecessors, (8339), 2743 states have return successors, (8703), 8119 states have call predecessors, (8703), 8339 states have call successors, (8703) [2022-11-03 02:52:16,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28131 states to 28131 states and 38756 transitions. [2022-11-03 02:52:16,505 INFO L78 Accepts]: Start accepts. Automaton has 28131 states and 38756 transitions. Word has length 253 [2022-11-03 02:52:16,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:16,506 INFO L495 AbstractCegarLoop]: Abstraction has 28131 states and 38756 transitions. [2022-11-03 02:52:16,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-03 02:52:16,506 INFO L276 IsEmpty]: Start isEmpty. Operand 28131 states and 38756 transitions. [2022-11-03 02:52:16,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2022-11-03 02:52:16,517 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:16,518 INFO L195 NwaCegarLoop]: trace histogram [22, 17, 17, 17, 17, 17, 17, 4, 4, 3, 3, 3, 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] [2022-11-03 02:52:16,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 02:52:16,518 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:52:16,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:16,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1976010743, now seen corresponding path program 1 times [2022-11-03 02:52:16,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:52:16,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405948091] [2022-11-03 02:52:16,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:16,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:52:16,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:16,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1312 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 1301 trivial. 0 not checked. [2022-11-03 02:52:16,910 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:52:16,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405948091] [2022-11-03 02:52:16,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405948091] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:52:16,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88047369] [2022-11-03 02:52:16,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:16,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:52:16,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae365bbc-5e22-449e-b18e-b7c66a41cd3c/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:52:16,914 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae365bbc-5e22-449e-b18e-b7c66a41cd3c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:52:16,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae365bbc-5e22-449e-b18e-b7c66a41cd3c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:52:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:18,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 2545 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:52:18,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:52:18,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1312 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 1263 trivial. 0 not checked. [2022-11-03 02:52:18,287 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:52:18,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88047369] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:18,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:52:18,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-03 02:52:18,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140133939] [2022-11-03 02:52:18,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:18,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:52:18,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:52:18,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:52:18,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:52:18,290 INFO L87 Difference]: Start difference. First operand 28131 states and 38756 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-03 02:52:22,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:52:26,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:26,788 INFO L93 Difference]: Finished difference Result 69268 states and 95492 transitions. [2022-11-03 02:52:26,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:52:26,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 257 [2022-11-03 02:52:26,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:26,935 INFO L225 Difference]: With dead ends: 69268 [2022-11-03 02:52:26,935 INFO L226 Difference]: Without dead ends: 41294 [2022-11-03 02:52:27,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:52:27,015 INFO L413 NwaCegarLoop]: 1684 mSDtfsCounter, 1403 mSDsluCounter, 1482 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1403 SdHoareTripleChecker+Valid, 2909 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:27,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1403 Valid, 2909 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-03 02:52:27,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41294 states. [2022-11-03 02:52:29,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41294 to 41258. [2022-11-03 02:52:29,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41258 states, 25009 states have (on average 1.2735015394457996) internal successors, (31849), 25566 states have internal predecessors, (31849), 12199 states have call successors, (12199), 4092 states have call predecessors, (12199), 4048 states have return successors, (12731), 11859 states have call predecessors, (12731), 12199 states have call successors, (12731) [2022-11-03 02:52:29,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41258 states to 41258 states and 56779 transitions. [2022-11-03 02:52:29,923 INFO L78 Accepts]: Start accepts. Automaton has 41258 states and 56779 transitions. Word has length 257 [2022-11-03 02:52:29,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:29,924 INFO L495 AbstractCegarLoop]: Abstraction has 41258 states and 56779 transitions. [2022-11-03 02:52:29,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-03 02:52:29,924 INFO L276 IsEmpty]: Start isEmpty. Operand 41258 states and 56779 transitions. [2022-11-03 02:52:29,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-11-03 02:52:29,933 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:29,934 INFO L195 NwaCegarLoop]: trace histogram [21, 17, 17, 17, 17, 17, 17, 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] [2022-11-03 02:52:29,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae365bbc-5e22-449e-b18e-b7c66a41cd3c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:52:30,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae365bbc-5e22-449e-b18e-b7c66a41cd3c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-03 02:52:30,154 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:52:30,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:30,155 INFO L85 PathProgramCache]: Analyzing trace with hash 991211405, now seen corresponding path program 1 times [2022-11-03 02:52:30,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:52:30,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727812615] [2022-11-03 02:52:30,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:30,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:52:30,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:30,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1271 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1268 trivial. 0 not checked. [2022-11-03 02:52:30,703 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:52:30,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727812615] [2022-11-03 02:52:30,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727812615] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:30,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:30,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:52:30,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451887913] [2022-11-03 02:52:30,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:30,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:52:30,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:52:30,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:52:30,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:52:30,706 INFO L87 Difference]: Start difference. First operand 41258 states and 56779 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-03 02:52:35,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:52:38,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:38,900 INFO L93 Difference]: Finished difference Result 101914 states and 140359 transitions. [2022-11-03 02:52:38,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:52:38,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 268 [2022-11-03 02:52:38,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:39,145 INFO L225 Difference]: With dead ends: 101914 [2022-11-03 02:52:39,145 INFO L226 Difference]: Without dead ends: 60813 [2022-11-03 02:52:39,250 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 02:52:39,251 INFO L413 NwaCegarLoop]: 1748 mSDtfsCounter, 1429 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1429 SdHoareTripleChecker+Valid, 2989 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:39,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1429 Valid, 2989 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-03 02:52:39,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60813 states. [2022-11-03 02:52:43,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60813 to 60785. [2022-11-03 02:52:43,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60785 states, 36919 states have (on average 1.27308431972697) internal successors, (47001), 37750 states have internal predecessors, (47001), 17878 states have call successors, (17878), 6050 states have call predecessors, (17878), 5986 states have return successors, (18664), 17368 states have call predecessors, (18664), 17878 states have call successors, (18664) [2022-11-03 02:52:43,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60785 states to 60785 states and 83543 transitions. [2022-11-03 02:52:43,725 INFO L78 Accepts]: Start accepts. Automaton has 60785 states and 83543 transitions. Word has length 268 [2022-11-03 02:52:43,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:43,726 INFO L495 AbstractCegarLoop]: Abstraction has 60785 states and 83543 transitions. [2022-11-03 02:52:43,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-03 02:52:43,727 INFO L276 IsEmpty]: Start isEmpty. Operand 60785 states and 83543 transitions. [2022-11-03 02:52:43,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2022-11-03 02:52:43,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:43,739 INFO L195 NwaCegarLoop]: trace histogram [23, 17, 17, 17, 17, 17, 17, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:43,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 02:52:43,740 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:52:43,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:43,740 INFO L85 PathProgramCache]: Analyzing trace with hash 609345488, now seen corresponding path program 1 times [2022-11-03 02:52:43,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:52:43,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903928714] [2022-11-03 02:52:43,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:43,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:52:43,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:44,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 1360 trivial. 0 not checked. [2022-11-03 02:52:44,019 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:52:44,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903928714] [2022-11-03 02:52:44,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903928714] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:44,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:44,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:52:44,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501595679] [2022-11-03 02:52:44,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:44,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:52:44,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:52:44,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:52:44,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:52:44,021 INFO L87 Difference]: Start difference. First operand 60785 states and 83543 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, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29)