./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs --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 0a0fd6bb20819f4c1984e3b3e8e83ec7b86578d28f1c3e6d8ae5f0c954457512 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:02:36,881 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:02:36,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:02:36,947 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:02:36,948 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:02:36,949 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:02:36,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:02:36,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:02:36,958 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:02:36,960 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:02:36,962 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:02:36,966 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:02:36,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:02:36,974 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:02:36,977 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:02:36,982 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:02:36,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:02:36,990 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:02:37,001 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:02:37,005 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:02:37,013 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:02:37,015 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:02:37,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:02:37,020 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:02:37,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:02:37,035 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:02:37,038 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:02:37,040 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:02:37,041 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:02:37,045 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:02:37,046 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:02:37,048 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:02:37,050 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:02:37,051 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:02:37,054 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:02:37,055 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:02:37,057 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:02:37,057 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:02:37,058 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:02:37,059 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:02:37,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:02:37,062 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 14:02:37,131 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:02:37,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:02:37,133 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:02:37,133 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:02:37,133 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:02:37,133 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:02:37,133 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:02:37,134 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:02:37,134 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:02:37,134 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:02:37,134 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:02:37,134 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:02:37,135 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:02:37,135 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:02:37,135 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:02:37,135 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:02:37,136 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:02:37,136 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:02:37,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:02:37,137 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:02:37,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:02:37,137 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:02:37,137 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:02:37,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:02:37,138 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:02:37,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:02:37,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:02:37,138 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:02:37,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:02:37,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:02:37,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:02:37,139 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:02:37,139 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:02:37,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:02:37,140 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:02:37,140 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:02:37,140 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:02:37,141 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a0fd6bb20819f4c1984e3b3e8e83ec7b86578d28f1c3e6d8ae5f0c954457512 [2021-11-19 14:02:37,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:02:37,645 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:02:37,650 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:02:37,652 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:02:37,653 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:02:37,656 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i [2021-11-19 14:02:37,752 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/data/112fc469f/5f43ed56ed8d4742ab2a1b617f1cfd63/FLAGdba271d45 [2021-11-19 14:02:39,076 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:02:39,077 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i [2021-11-19 14:02:39,135 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/data/112fc469f/5f43ed56ed8d4742ab2a1b617f1cfd63/FLAGdba271d45 [2021-11-19 14:02:39,284 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/data/112fc469f/5f43ed56ed8d4742ab2a1b617f1cfd63 [2021-11-19 14:02:39,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:02:39,288 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:02:39,290 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:02:39,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:02:39,305 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:02:39,307 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:02:39" (1/1) ... [2021-11-19 14:02:39,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45534b26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:02:39, skipping insertion in model container [2021-11-19 14:02:39,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:02:39" (1/1) ... [2021-11-19 14:02:39,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:02:39,560 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:02:41,379 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:02:41,382 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:02:43,091 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_d61c8c72-98b1-4c06-b623-1e199d4114c8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348095,348108] [2021-11-19 14:02:43,097 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_d61c8c72-98b1-4c06-b623-1e199d4114c8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348264,348277] [2021-11-19 14:02:43,098 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_d61c8c72-98b1-4c06-b623-1e199d4114c8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348431,348444] [2021-11-19 14:02:43,098 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_d61c8c72-98b1-4c06-b623-1e199d4114c8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348599,348612] [2021-11-19 14:02:43,117 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:02:43,167 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 14:02:43,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6e390330 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:02:43, skipping insertion in model container [2021-11-19 14:02:43,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:02:43,168 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:02:43,171 INFO L158 Benchmark]: Toolchain (without parser) took 3881.35ms. Allocated memory was 96.5MB in the beginning and 119.5MB in the end (delta: 23.1MB). Free memory was 69.7MB in the beginning and 62.2MB in the end (delta: 7.4MB). Peak memory consumption was 58.2MB. Max. memory is 16.1GB. [2021-11-19 14:02:43,172 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 96.5MB. Free memory is still 71.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:02:43,173 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3878.09ms. Allocated memory was 96.5MB in the beginning and 119.5MB in the end (delta: 23.1MB). Free memory was 69.5MB in the beginning and 62.2MB in the end (delta: 7.2MB). Peak memory consumption was 58.2MB. Max. memory is 16.1GB. [2021-11-19 14:02:43,175 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45ms. Allocated memory is still 96.5MB. Free memory is still 71.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3878.09ms. Allocated memory was 96.5MB in the beginning and 119.5MB in the end (delta: 23.1MB). Free memory was 69.5MB in the beginning and 62.2MB in the end (delta: 7.2MB). Peak memory consumption was 58.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 5624]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs --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 0a0fd6bb20819f4c1984e3b3e8e83ec7b86578d28f1c3e6d8ae5f0c954457512 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:02:45,796 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:02:45,801 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:02:45,870 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:02:45,871 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:02:45,876 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:02:45,878 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:02:45,883 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:02:45,887 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:02:45,899 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:02:45,901 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:02:45,904 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:02:45,905 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:02:45,911 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:02:45,914 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:02:45,920 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:02:45,923 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:02:45,924 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:02:45,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:02:45,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:02:45,940 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:02:45,942 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:02:45,946 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:02:45,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:02:45,960 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:02:45,963 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:02:45,964 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:02:45,966 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:02:45,967 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:02:45,969 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:02:45,970 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:02:45,971 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:02:45,973 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:02:45,975 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:02:45,977 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:02:45,977 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:02:45,979 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:02:45,979 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:02:45,979 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:02:45,982 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:02:45,983 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:02:45,990 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 14:02:46,044 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:02:46,044 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:02:46,046 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:02:46,047 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:02:46,047 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:02:46,047 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:02:46,048 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:02:46,048 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:02:46,048 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:02:46,048 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:02:46,052 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:02:46,052 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:02:46,052 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:02:46,053 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:02:46,053 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:02:46,053 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:02:46,054 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:02:46,054 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:02:46,054 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:02:46,054 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:02:46,055 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:02:46,055 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:02:46,055 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:02:46,056 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:02:46,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:02:46,056 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:02:46,057 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:02:46,057 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:02:46,057 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:02:46,058 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:02:46,058 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:02:46,058 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:02:46,059 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:02:46,059 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a0fd6bb20819f4c1984e3b3e8e83ec7b86578d28f1c3e6d8ae5f0c954457512 [2021-11-19 14:02:46,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:02:46,563 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:02:46,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:02:46,567 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:02:46,568 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:02:46,569 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i [2021-11-19 14:02:46,654 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/data/d61b0a15c/66324b5d63164f50b9d532bbb339bda9/FLAG2df70af65 [2021-11-19 14:02:47,945 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:02:47,946 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i [2021-11-19 14:02:48,008 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/data/d61b0a15c/66324b5d63164f50b9d532bbb339bda9/FLAG2df70af65 [2021-11-19 14:02:48,147 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/data/d61b0a15c/66324b5d63164f50b9d532bbb339bda9 [2021-11-19 14:02:48,149 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:02:48,151 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:02:48,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:02:48,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:02:48,166 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:02:48,167 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:02:48" (1/1) ... [2021-11-19 14:02:48,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a1bdfc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:02:48, skipping insertion in model container [2021-11-19 14:02:48,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:02:48" (1/1) ... [2021-11-19 14:02:48,178 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:02:48,462 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:02:51,570 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_d61c8c72-98b1-4c06-b623-1e199d4114c8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348095,348108] [2021-11-19 14:02:51,574 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_d61c8c72-98b1-4c06-b623-1e199d4114c8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348264,348277] [2021-11-19 14:02:51,574 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_d61c8c72-98b1-4c06-b623-1e199d4114c8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348431,348444] [2021-11-19 14:02:51,575 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_d61c8c72-98b1-4c06-b623-1e199d4114c8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348599,348612] [2021-11-19 14:02:51,597 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:02:51,696 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:02:51,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:02:52,380 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_d61c8c72-98b1-4c06-b623-1e199d4114c8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348095,348108] [2021-11-19 14:02:52,381 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_d61c8c72-98b1-4c06-b623-1e199d4114c8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348264,348277] [2021-11-19 14:02:52,381 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_d61c8c72-98b1-4c06-b623-1e199d4114c8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348431,348444] [2021-11-19 14:02:52,382 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_d61c8c72-98b1-4c06-b623-1e199d4114c8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348599,348612] [2021-11-19 14:02:52,388 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:02:52,417 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:02:52,848 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_d61c8c72-98b1-4c06-b623-1e199d4114c8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348095,348108] [2021-11-19 14:02:52,848 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_d61c8c72-98b1-4c06-b623-1e199d4114c8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348264,348277] [2021-11-19 14:02:52,849 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_d61c8c72-98b1-4c06-b623-1e199d4114c8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348431,348444] [2021-11-19 14:02:52,850 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_d61c8c72-98b1-4c06-b623-1e199d4114c8/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348599,348612] [2021-11-19 14:02:52,857 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:02:53,248 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:02:53,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:02:53 WrapperNode [2021-11-19 14:02:53,250 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:02:53,252 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:02:53,252 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:02:53,253 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:02:53,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:02:53" (1/1) ... [2021-11-19 14:02:53,441 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:02:53" (1/1) ... [2021-11-19 14:02:53,716 INFO L137 Inliner]: procedures = 406, calls = 2962, calls flagged for inlining = 179, calls inlined = 164, statements flattened = 5994 [2021-11-19 14:02:53,717 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:02:53,720 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:02:53,720 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:02:53,720 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:02:53,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:02:53" (1/1) ... [2021-11-19 14:02:53,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:02:53" (1/1) ... [2021-11-19 14:02:53,816 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:02:53" (1/1) ... [2021-11-19 14:02:53,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:02:53" (1/1) ... [2021-11-19 14:02:54,001 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:02:53" (1/1) ... [2021-11-19 14:02:54,049 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:02:53" (1/1) ... [2021-11-19 14:02:54,092 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:02:53" (1/1) ... [2021-11-19 14:02:54,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:02:54,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:02:54,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:02:54,132 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:02:54,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:02:53" (1/1) ... [2021-11-19 14:02:54,143 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:02:54,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:02:54,173 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:02:54,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:02:54,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-19 14:02:54,243 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-19 14:02:54,243 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_nway_reset [2021-11-19 14:02:54,243 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_nway_reset [2021-11-19 14:02:54,244 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_link_reset [2021-11-19 14:02:54,244 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_link_reset [2021-11-19 14:02:54,244 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-19 14:02:54,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-19 14:02:54,244 INFO L130 BoogieDeclarations]: Found specification of procedure smsc_crc [2021-11-19 14:02:54,245 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc_crc [2021-11-19 14:02:54,245 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_ethtool_getregslen [2021-11-19 14:02:54,245 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_ethtool_getregslen [2021-11-19 14:02:54,245 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc95xx_mdio_write [2021-11-19 14:02:54,245 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc95xx_mdio_write [2021-11-19 14:02:54,246 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-19 14:02:54,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-19 14:02:54,246 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_61 [2021-11-19 14:02:54,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_61 [2021-11-19 14:02:54,246 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_write_reg_nopm [2021-11-19 14:02:54,247 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_write_reg_nopm [2021-11-19 14:02:54,247 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_smsc95xx_driver_exit_6_2 [2021-11-19 14:02:54,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_smsc95xx_driver_exit_6_2 [2021-11-19 14:02:54,248 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_enable_phy_wakeup_interrupts [2021-11-19 14:02:54,248 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_enable_phy_wakeup_interrupts [2021-11-19 14:02:54,249 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-19 14:02:54,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-19 14:02:54,249 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_write_cmd_nopm [2021-11-19 14:02:54,250 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-19 14:02:54,250 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-19 14:02:54,250 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-19 14:02:54,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-19 14:02:54,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:02:54,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-19 14:02:54,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:02:54,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 14:02:54,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 14:02:54,252 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_write_reg [2021-11-19 14:02:54,252 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_write_reg [2021-11-19 14:02:54,252 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_rx_csum_offload [2021-11-19 14:02:54,253 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_rx_csum_offload [2021-11-19 14:02:54,253 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_read_reg_nopm [2021-11-19 14:02:54,254 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_read_reg_nopm [2021-11-19 14:02:54,255 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2021-11-19 14:02:54,256 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2021-11-19 14:02:54,256 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-19 14:02:54,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-19 14:02:54,256 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_tx_timeout [2021-11-19 14:02:54,257 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_tx_timeout [2021-11-19 14:02:54,257 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2021-11-19 14:02:54,257 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2021-11-19 14:02:54,257 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_mdio_write_nopm [2021-11-19 14:02:54,258 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_mdio_write_nopm [2021-11-19 14:02:54,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-19 14:02:54,259 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-19 14:02:54,259 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_ethtool_get_eeprom_len [2021-11-19 14:02:54,259 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_ethtool_get_eeprom_len [2021-11-19 14:02:54,259 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_write_cmd [2021-11-19 14:02:54,260 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2021-11-19 14:02:54,260 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2021-11-19 14:02:54,260 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_read_cmd_nopm [2021-11-19 14:02:54,261 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-19 14:02:54,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-19 14:02:54,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:02:54,262 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-19 14:02:54,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-19 14:02:54,262 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-19 14:02:54,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-19 14:02:54,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:02:54,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-19 14:02:54,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-19 14:02:54,263 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-19 14:02:54,263 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-19 14:02:54,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:02:54,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-19 14:02:54,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-19 14:02:54,265 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_start_rx_path [2021-11-19 14:02:54,265 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_start_rx_path [2021-11-19 14:02:54,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-19 14:02:54,266 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_open [2021-11-19 14:02:54,266 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_open [2021-11-19 14:02:54,266 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc95xx_write_reg [2021-11-19 14:02:54,267 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc95xx_write_reg [2021-11-19 14:02:54,268 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_set_features [2021-11-19 14:02:54,268 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_set_features [2021-11-19 14:02:54,268 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-19 14:02:54,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-19 14:02:54,268 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_wait_eeprom [2021-11-19 14:02:54,269 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_wait_eeprom [2021-11-19 14:02:54,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-19 14:02:54,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:02:54,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:02:54,269 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc95xx_read_reg [2021-11-19 14:02:54,270 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc95xx_read_reg [2021-11-19 14:02:54,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 14:02:54,270 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2021-11-19 14:02:54,270 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2021-11-19 14:02:54,270 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-19 14:02:54,271 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-19 14:02:54,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 14:02:54,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 14:02:54,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-19 14:02:54,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-19 14:02:54,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-19 14:02:54,275 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-19 14:02:54,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-19 14:02:54,279 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2021-11-19 14:02:54,279 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2021-11-19 14:02:54,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-19 14:02:54,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-19 14:02:54,281 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_reset [2021-11-19 14:02:54,282 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_reset [2021-11-19 14:02:54,282 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_stop [2021-11-19 14:02:54,283 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_stop [2021-11-19 14:02:54,288 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_mac_cr_lock_of_smsc95xx_priv [2021-11-19 14:02:54,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_mac_cr_lock_of_smsc95xx_priv [2021-11-19 14:02:54,289 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_read_reg [2021-11-19 14:02:54,289 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_read_reg [2021-11-19 14:02:54,289 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-19 14:02:54,289 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-19 14:02:54,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 14:02:54,290 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 14:02:54,290 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_mdio_write [2021-11-19 14:02:54,291 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_mdio_write [2021-11-19 14:02:54,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:02:54,291 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-19 14:02:54,291 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-19 14:02:54,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:02:54,291 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_enter_suspend1 [2021-11-19 14:02:54,292 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_enter_suspend1 [2021-11-19 14:02:54,292 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_enter_suspend2 [2021-11-19 14:02:54,292 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_enter_suspend2 [2021-11-19 14:02:54,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 14:02:54,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 14:02:54,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-19 14:02:54,293 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_read_eeprom [2021-11-19 14:02:54,293 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_read_eeprom [2021-11-19 14:02:54,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 14:02:54,293 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_set_multicast [2021-11-19 14:02:54,294 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_set_multicast [2021-11-19 14:02:54,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 14:02:54,294 INFO L130 BoogieDeclarations]: Found specification of procedure skb_checksum_start_offset [2021-11-19 14:02:54,294 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_checksum_start_offset [2021-11-19 14:02:54,294 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-19 14:02:54,295 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-19 14:02:54,295 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-19 14:02:54,295 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-19 14:02:54,295 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-19 14:02:54,295 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-19 14:02:54,296 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-19 14:02:54,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-19 14:02:54,297 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-19 14:02:54,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-19 14:02:54,297 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_mdio_read [2021-11-19 14:02:54,297 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_mdio_read [2021-11-19 14:02:54,298 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc95xx_phy_wait_not_busy [2021-11-19 14:02:54,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc95xx_phy_wait_not_busy [2021-11-19 14:02:54,298 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2021-11-19 14:02:54,299 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2021-11-19 14:02:54,299 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_2_4 [2021-11-19 14:02:54,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_2_4 [2021-11-19 14:02:54,299 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_write_reg_async [2021-11-19 14:02:54,299 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_write_reg_async [2021-11-19 14:02:54,300 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2021-11-19 14:02:54,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2021-11-19 14:02:54,300 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-19 14:02:54,300 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-19 14:02:54,300 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_mdio_read_nopm [2021-11-19 14:02:54,301 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_mdio_read_nopm [2021-11-19 14:02:54,301 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_resume [2021-11-19 14:02:54,301 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_resume [2021-11-19 14:02:54,301 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2021-11-19 14:02:54,301 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2021-11-19 14:02:54,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-19 14:02:54,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-19 14:02:54,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-19 14:02:54,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-19 14:02:54,302 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-19 14:02:54,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-19 14:02:54,303 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_read_cmd [2021-11-19 14:02:54,303 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u8~0~X~~u8~0~X~~u16~0~X~~u16~0~X~$Pointer$~X~~u16~0~TO~C_INT [2021-11-19 14:02:54,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u8~0~X~~u8~0~X~~u16~0~X~~u16~0~X~$Pointer$~X~~u16~0~TO~C_INT [2021-11-19 14:02:54,303 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc95xx_mdio_read [2021-11-19 14:02:54,303 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc95xx_mdio_read [2021-11-19 14:02:54,304 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_eeprom_confirm_not_busy [2021-11-19 14:02:54,304 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_eeprom_confirm_not_busy [2021-11-19 14:02:54,304 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-19 14:02:54,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-19 14:02:54,304 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-19 14:02:54,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-19 14:02:55,460 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:02:55,468 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:02:55,923 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-19 14:04:06,951 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-19 14:04:07,003 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:04:07,026 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:04:07,026 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 14:04:07,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:04:07 BoogieIcfgContainer [2021-11-19 14:04:07,032 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:04:07,034 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:04:07,034 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:04:07,037 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:04:07,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:02:48" (1/3) ... [2021-11-19 14:04:07,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13efce1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:04:07, skipping insertion in model container [2021-11-19 14:04:07,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:02:53" (2/3) ... [2021-11-19 14:04:07,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13efce1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:04:07, skipping insertion in model container [2021-11-19 14:04:07,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:04:07" (3/3) ... [2021-11-19 14:04:07,041 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i [2021-11-19 14:04:07,047 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:04:07,047 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-19 14:04:07,110 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:04:07,117 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 14:04:07,118 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-19 14:04:07,173 INFO L276 IsEmpty]: Start isEmpty. Operand has 1697 states, 1232 states have (on average 1.3465909090909092) internal successors, (1659), 1238 states have internal predecessors, (1659), 386 states have call successors, (386), 77 states have call predecessors, (386), 76 states have return successors, (379), 379 states have call predecessors, (379), 379 states have call successors, (379) [2021-11-19 14:04:07,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-11-19 14:04:07,201 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:07,203 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:04:07,203 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:04:07,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:07,215 INFO L85 PathProgramCache]: Analyzing trace with hash -2048722027, now seen corresponding path program 1 times [2021-11-19 14:04:07,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:04:07,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [94082390] [2021-11-19 14:04:07,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:07,247 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:04:07,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:04:07,257 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:04:07,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:04:09,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:09,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 1921 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:04:09,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:04:10,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 1377 trivial. 0 not checked. [2021-11-19 14:04:10,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:04:10,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2021-11-19 14:04:10,763 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:04:10,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [94082390] [2021-11-19 14:04:10,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [94082390] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:10,764 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:10,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:04:10,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607980253] [2021-11-19 14:04:10,767 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:10,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:04:10,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:04:10,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:04:10,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:04:10,807 INFO L87 Difference]: Start difference. First operand has 1697 states, 1232 states have (on average 1.3465909090909092) internal successors, (1659), 1238 states have internal predecessors, (1659), 386 states have call successors, (386), 77 states have call predecessors, (386), 76 states have return successors, (379), 379 states have call predecessors, (379), 379 states have call successors, (379) Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 4 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-19 14:04:13,008 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:04:18,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:18,593 INFO L93 Difference]: Finished difference Result 6485 states and 9759 transitions. [2021-11-19 14:04:18,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:04:18,596 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 4 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 228 [2021-11-19 14:04:18,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:18,664 INFO L225 Difference]: With dead ends: 6485 [2021-11-19 14:04:18,664 INFO L226 Difference]: Without dead ends: 4810 [2021-11-19 14:04:18,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 452 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:04:18,799 INFO L933 BasicCegarLoop]: 3101 mSDtfsCounter, 4574 mSDsluCounter, 6060 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4574 SdHoareTripleChecker+Valid, 9161 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:18,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4574 Valid, 9161 Invalid, 839 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [26 Valid, 812 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2021-11-19 14:04:18,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4810 states. [2021-11-19 14:04:19,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4810 to 4784. [2021-11-19 14:04:19,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4784 states, 3527 states have (on average 1.3442018712787072) internal successors, (4741), 3541 states have internal predecessors, (4741), 1033 states have call successors, (1033), 222 states have call predecessors, (1033), 221 states have return successors, (1029), 1029 states have call predecessors, (1029), 1029 states have call successors, (1029) [2021-11-19 14:04:19,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4784 states to 4784 states and 6803 transitions. [2021-11-19 14:04:19,355 INFO L78 Accepts]: Start accepts. Automaton has 4784 states and 6803 transitions. Word has length 228 [2021-11-19 14:04:19,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:19,364 INFO L470 AbstractCegarLoop]: Abstraction has 4784 states and 6803 transitions. [2021-11-19 14:04:19,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 4 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-19 14:04:19,365 INFO L276 IsEmpty]: Start isEmpty. Operand 4784 states and 6803 transitions. [2021-11-19 14:04:19,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-11-19 14:04:19,391 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:19,393 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:04:19,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:04:19,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:04:19,607 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:04:19,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:19,608 INFO L85 PathProgramCache]: Analyzing trace with hash 775454786, now seen corresponding path program 1 times [2021-11-19 14:04:19,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:04:19,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [669734141] [2021-11-19 14:04:19,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:19,613 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:04:19,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:04:19,619 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:04:19,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:04:21,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:21,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 1994 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:04:21,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:04:22,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 1377 trivial. 0 not checked. [2021-11-19 14:04:22,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:04:23,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2021-11-19 14:04:23,297 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:04:23,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [669734141] [2021-11-19 14:04:23,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [669734141] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:23,297 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:23,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:04:23,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560364767] [2021-11-19 14:04:23,298 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:23,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:04:23,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:04:23,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:04:23,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:04:23,302 INFO L87 Difference]: Start difference. First operand 4784 states and 6803 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-19 14:04:25,574 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:04:26,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:26,506 INFO L93 Difference]: Finished difference Result 12042 states and 17130 transitions. [2021-11-19 14:04:26,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:04:26,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 243 [2021-11-19 14:04:26,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:26,578 INFO L225 Difference]: With dead ends: 12042 [2021-11-19 14:04:26,578 INFO L226 Difference]: Without dead ends: 7299 [2021-11-19 14:04:26,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 483 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:04:26,609 INFO L933 BasicCegarLoop]: 2821 mSDtfsCounter, 1987 mSDsluCounter, 2300 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1987 SdHoareTripleChecker+Valid, 5121 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:26,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1987 Valid, 5121 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 87 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2021-11-19 14:04:26,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7299 states. [2021-11-19 14:04:26,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7299 to 7272. [2021-11-19 14:04:26,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7272 states, 5299 states have (on average 1.3455368937535384) internal successors, (7130), 5324 states have internal predecessors, (7130), 1605 states have call successors, (1605), 366 states have call predecessors, (1605), 365 states have return successors, (1601), 1596 states have call predecessors, (1601), 1601 states have call successors, (1601) [2021-11-19 14:04:27,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7272 states to 7272 states and 10336 transitions. [2021-11-19 14:04:27,042 INFO L78 Accepts]: Start accepts. Automaton has 7272 states and 10336 transitions. Word has length 243 [2021-11-19 14:04:27,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:27,044 INFO L470 AbstractCegarLoop]: Abstraction has 7272 states and 10336 transitions. [2021-11-19 14:04:27,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-19 14:04:27,045 INFO L276 IsEmpty]: Start isEmpty. Operand 7272 states and 10336 transitions. [2021-11-19 14:04:27,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-11-19 14:04:27,056 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:27,056 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:04:27,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:04:27,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:04:27,275 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:04:27,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:27,275 INFO L85 PathProgramCache]: Analyzing trace with hash -681413580, now seen corresponding path program 1 times [2021-11-19 14:04:27,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:04:27,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1280464500] [2021-11-19 14:04:27,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:27,278 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:04:27,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:04:27,279 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:04:27,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:04:28,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:29,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 2049 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:04:29,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:04:31,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1647 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1647 trivial. 0 not checked. [2021-11-19 14:04:31,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:04:32,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1647 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1647 trivial. 0 not checked. [2021-11-19 14:04:32,650 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:04:32,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1280464500] [2021-11-19 14:04:32,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1280464500] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:32,651 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:32,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 7 [2021-11-19 14:04:32,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949854823] [2021-11-19 14:04:32,652 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:32,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:04:32,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:04:32,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:04:32,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:04:32,654 INFO L87 Difference]: Start difference. First operand 7272 states and 10336 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (57), 4 states have call predecessors, (57), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2021-11-19 14:04:33,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:33,201 INFO L93 Difference]: Finished difference Result 7278 states and 10341 transitions. [2021-11-19 14:04:33,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:04:33,202 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (57), 4 states have call predecessors, (57), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 287 [2021-11-19 14:04:33,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:33,256 INFO L225 Difference]: With dead ends: 7278 [2021-11-19 14:04:33,256 INFO L226 Difference]: Without dead ends: 7276 [2021-11-19 14:04:33,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 567 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:04:33,262 INFO L933 BasicCegarLoop]: 2385 mSDtfsCounter, 2270 mSDsluCounter, 7132 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2281 SdHoareTripleChecker+Valid, 9517 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:33,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2281 Valid, 9517 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:04:33,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7276 states. [2021-11-19 14:04:33,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7276 to 7276. [2021-11-19 14:04:33,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7276 states, 5302 states have (on average 1.34534138061109) internal successors, (7133), 5327 states have internal predecessors, (7133), 1605 states have call successors, (1605), 367 states have call predecessors, (1605), 366 states have return successors, (1601), 1596 states have call predecessors, (1601), 1601 states have call successors, (1601) [2021-11-19 14:04:33,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7276 states to 7276 states and 10339 transitions. [2021-11-19 14:04:33,651 INFO L78 Accepts]: Start accepts. Automaton has 7276 states and 10339 transitions. Word has length 287 [2021-11-19 14:04:33,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:33,652 INFO L470 AbstractCegarLoop]: Abstraction has 7276 states and 10339 transitions. [2021-11-19 14:04:33,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (57), 4 states have call predecessors, (57), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2021-11-19 14:04:33,654 INFO L276 IsEmpty]: Start isEmpty. Operand 7276 states and 10339 transitions. [2021-11-19 14:04:33,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2021-11-19 14:04:33,668 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:33,669 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:04:33,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:04:33,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:04:33,895 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:04:33,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:33,895 INFO L85 PathProgramCache]: Analyzing trace with hash -2099691453, now seen corresponding path program 1 times [2021-11-19 14:04:33,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:04:33,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [410490552] [2021-11-19 14:04:33,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:33,898 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:04:33,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:04:33,901 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:04:33,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:04:35,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:35,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 2056 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:04:35,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:04:37,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1649 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1647 trivial. 0 not checked. [2021-11-19 14:04:37,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:04:39,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1649 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1647 trivial. 0 not checked. [2021-11-19 14:04:39,030 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:04:39,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [410490552] [2021-11-19 14:04:39,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [410490552] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:04:39,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:04:39,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:04:39,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995018269] [2021-11-19 14:04:39,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:39,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:04:39,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:04:39,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:04:39,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:04:39,033 INFO L87 Difference]: Start difference. First operand 7276 states and 10339 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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) [2021-11-19 14:04:39,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:39,565 INFO L93 Difference]: Finished difference Result 7282 states and 10344 transitions. [2021-11-19 14:04:39,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:04:39,566 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 292 [2021-11-19 14:04:39,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:39,657 INFO L225 Difference]: With dead ends: 7282 [2021-11-19 14:04:39,657 INFO L226 Difference]: Without dead ends: 7280 [2021-11-19 14:04:39,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 577 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:04:39,665 INFO L933 BasicCegarLoop]: 2388 mSDtfsCounter, 2304 mSDsluCounter, 4757 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2314 SdHoareTripleChecker+Valid, 7145 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:39,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2314 Valid, 7145 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:04:39,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7280 states. [2021-11-19 14:04:40,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7280 to 7280. [2021-11-19 14:04:40,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7280 states, 5305 states have (on average 1.3451460885956645) internal successors, (7136), 5330 states have internal predecessors, (7136), 1605 states have call successors, (1605), 368 states have call predecessors, (1605), 367 states have return successors, (1601), 1596 states have call predecessors, (1601), 1601 states have call successors, (1601) [2021-11-19 14:04:40,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7280 states to 7280 states and 10342 transitions. [2021-11-19 14:04:40,153 INFO L78 Accepts]: Start accepts. Automaton has 7280 states and 10342 transitions. Word has length 292 [2021-11-19 14:04:40,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:40,158 INFO L470 AbstractCegarLoop]: Abstraction has 7280 states and 10342 transitions. [2021-11-19 14:04:40,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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) [2021-11-19 14:04:40,159 INFO L276 IsEmpty]: Start isEmpty. Operand 7280 states and 10342 transitions. [2021-11-19 14:04:40,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2021-11-19 14:04:40,172 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:40,172 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:04:40,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:04:40,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:04:40,395 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:04:40,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:40,395 INFO L85 PathProgramCache]: Analyzing trace with hash -948454060, now seen corresponding path program 1 times [2021-11-19 14:04:40,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:04:40,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1248096302] [2021-11-19 14:04:40,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:40,398 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:04:40,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:04:40,400 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:04:40,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:04:41,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:41,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 2063 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:04:41,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:04:43,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1655 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1651 trivial. 0 not checked. [2021-11-19 14:04:43,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:04:45,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1655 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1651 trivial. 0 not checked. [2021-11-19 14:04:45,103 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:04:45,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1248096302] [2021-11-19 14:04:45,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1248096302] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:04:45,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:04:45,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:04:45,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923190158] [2021-11-19 14:04:45,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:45,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:04:45,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:04:45,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:04:45,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:04:45,107 INFO L87 Difference]: Start difference. First operand 7280 states and 10342 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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) [2021-11-19 14:04:45,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:45,579 INFO L93 Difference]: Finished difference Result 7286 states and 10347 transitions. [2021-11-19 14:04:45,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:04:45,580 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 297 [2021-11-19 14:04:45,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:45,615 INFO L225 Difference]: With dead ends: 7286 [2021-11-19 14:04:45,616 INFO L226 Difference]: Without dead ends: 7284 [2021-11-19 14:04:45,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 587 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:04:45,622 INFO L933 BasicCegarLoop]: 2388 mSDtfsCounter, 2304 mSDsluCounter, 4757 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2313 SdHoareTripleChecker+Valid, 7145 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:45,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2313 Valid, 7145 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:04:45,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7284 states. [2021-11-19 14:04:46,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7284 to 7284. [2021-11-19 14:04:46,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7284 states, 5308 states have (on average 1.3449510173323285) internal successors, (7139), 5333 states have internal predecessors, (7139), 1605 states have call successors, (1605), 369 states have call predecessors, (1605), 368 states have return successors, (1601), 1596 states have call predecessors, (1601), 1601 states have call successors, (1601) [2021-11-19 14:04:46,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7284 states to 7284 states and 10345 transitions. [2021-11-19 14:04:46,110 INFO L78 Accepts]: Start accepts. Automaton has 7284 states and 10345 transitions. Word has length 297 [2021-11-19 14:04:46,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:46,110 INFO L470 AbstractCegarLoop]: Abstraction has 7284 states and 10345 transitions. [2021-11-19 14:04:46,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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) [2021-11-19 14:04:46,111 INFO L276 IsEmpty]: Start isEmpty. Operand 7284 states and 10345 transitions. [2021-11-19 14:04:46,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2021-11-19 14:04:46,124 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:46,124 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:04:46,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:04:46,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:04:46,339 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:04:46,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:46,340 INFO L85 PathProgramCache]: Analyzing trace with hash 2041422695, now seen corresponding path program 1 times [2021-11-19 14:04:46,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:04:46,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2038884147] [2021-11-19 14:04:46,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:46,342 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:04:46,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:04:46,344 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:04:46,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:04:47,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:47,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 2112 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:04:47,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:04:48,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1674 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 1582 trivial. 0 not checked. [2021-11-19 14:04:48,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:04:49,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1674 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 1663 trivial. 0 not checked. [2021-11-19 14:04:49,285 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:04:49,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2038884147] [2021-11-19 14:04:49,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2038884147] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:04:49,285 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:04:49,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:04:49,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551918763] [2021-11-19 14:04:49,286 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:04:49,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:04:49,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:04:49,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:04:49,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:04:49,288 INFO L87 Difference]: Start difference. First operand 7284 states and 10345 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 4 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) [2021-11-19 14:04:51,448 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:04:56,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:04:56,171 INFO L93 Difference]: Finished difference Result 17453 states and 24777 transitions. [2021-11-19 14:04:56,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:04:56,172 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 4 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) Word has length 311 [2021-11-19 14:04:56,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:04:56,292 INFO L225 Difference]: With dead ends: 17453 [2021-11-19 14:04:56,292 INFO L226 Difference]: Without dead ends: 11522 [2021-11-19 14:04:56,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 620 GetRequests, 618 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:04:56,325 INFO L933 BasicCegarLoop]: 4873 mSDtfsCounter, 4563 mSDsluCounter, 3831 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4563 SdHoareTripleChecker+Valid, 8704 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:04:56,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4563 Valid, 8704 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 795 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2021-11-19 14:04:56,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11522 states. [2021-11-19 14:04:57,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11522 to 11484. [2021-11-19 14:04:57,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11484 states, 8380 states have (on average 1.3448687350835322) internal successors, (11270), 8413 states have internal predecessors, (11270), 2517 states have call successors, (2517), 585 states have call predecessors, (2517), 584 states have return successors, (2513), 2509 states have call predecessors, (2513), 2513 states have call successors, (2513) [2021-11-19 14:04:57,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11484 states to 11484 states and 16300 transitions. [2021-11-19 14:04:57,250 INFO L78 Accepts]: Start accepts. Automaton has 11484 states and 16300 transitions. Word has length 311 [2021-11-19 14:04:57,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:04:57,252 INFO L470 AbstractCegarLoop]: Abstraction has 11484 states and 16300 transitions. [2021-11-19 14:04:57,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 4 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) [2021-11-19 14:04:57,252 INFO L276 IsEmpty]: Start isEmpty. Operand 11484 states and 16300 transitions. [2021-11-19 14:04:57,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2021-11-19 14:04:57,342 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:04:57,342 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:04:57,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:04:57,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:04:57,559 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:04:57,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:04:57,560 INFO L85 PathProgramCache]: Analyzing trace with hash -299294395, now seen corresponding path program 1 times [2021-11-19 14:04:57,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:04:57,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1277172420] [2021-11-19 14:04:57,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:04:57,562 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:04:57,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:04:57,564 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:04:57,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:04:58,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:04:59,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 2113 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:04:59,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:04:59,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1675 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 1582 trivial. 0 not checked. [2021-11-19 14:04:59,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:05:00,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1675 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1663 trivial. 0 not checked. [2021-11-19 14:05:00,362 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:05:00,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1277172420] [2021-11-19 14:05:00,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1277172420] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:05:00,362 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:05:00,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:05:00,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424031161] [2021-11-19 14:05:00,363 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:05:00,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:05:00,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:05:00,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:05:00,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:05:00,364 INFO L87 Difference]: Start difference. First operand 11484 states and 16300 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 4 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) [2021-11-19 14:05:02,574 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:05:06,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:05:06,907 INFO L93 Difference]: Finished difference Result 24547 states and 34823 transitions. [2021-11-19 14:05:06,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:05:06,908 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 4 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) Word has length 312 [2021-11-19 14:05:06,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:05:06,982 INFO L225 Difference]: With dead ends: 24547 [2021-11-19 14:05:06,982 INFO L226 Difference]: Without dead ends: 14416 [2021-11-19 14:05:07,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 620 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:05:07,028 INFO L933 BasicCegarLoop]: 5005 mSDtfsCounter, 4590 mSDsluCounter, 4295 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4590 SdHoareTripleChecker+Valid, 9300 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 798 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:05:07,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4590 Valid, 9300 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 798 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2021-11-19 14:05:07,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14416 states. [2021-11-19 14:05:07,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14416 to 14348. [2021-11-19 14:05:07,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14348 states, 10480 states have (on average 1.3440839694656488) internal successors, (14086), 10519 states have internal predecessors, (14086), 3137 states have call successors, (3137), 729 states have call predecessors, (3137), 728 states have return successors, (3133), 3129 states have call predecessors, (3133), 3133 states have call successors, (3133) [2021-11-19 14:05:08,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14348 states to 14348 states and 20356 transitions. [2021-11-19 14:05:08,052 INFO L78 Accepts]: Start accepts. Automaton has 14348 states and 20356 transitions. Word has length 312 [2021-11-19 14:05:08,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:05:08,053 INFO L470 AbstractCegarLoop]: Abstraction has 14348 states and 20356 transitions. [2021-11-19 14:05:08,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 4 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) [2021-11-19 14:05:08,053 INFO L276 IsEmpty]: Start isEmpty. Operand 14348 states and 20356 transitions. [2021-11-19 14:05:08,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2021-11-19 14:05:08,070 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:05:08,071 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:05:08,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:05:08,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:05:08,286 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:05:08,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:05:08,287 INFO L85 PathProgramCache]: Analyzing trace with hash 545184419, now seen corresponding path program 1 times [2021-11-19 14:05:08,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:05:08,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1938811078] [2021-11-19 14:05:08,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:05:08,289 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:05:08,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:05:08,293 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:05:08,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:05:09,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:05:09,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 2070 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:05:09,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:05:11,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1665 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1659 trivial. 0 not checked. [2021-11-19 14:05:11,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:05:12,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1665 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1659 trivial. 0 not checked. [2021-11-19 14:05:12,894 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:05:12,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1938811078] [2021-11-19 14:05:12,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1938811078] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:05:12,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:05:12,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:05:12,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011280283] [2021-11-19 14:05:12,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:05:12,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:05:12,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:05:12,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:05:12,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:05:12,897 INFO L87 Difference]: Start difference. First operand 14348 states and 20356 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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) [2021-11-19 14:05:13,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:05:13,625 INFO L93 Difference]: Finished difference Result 14354 states and 20361 transitions. [2021-11-19 14:05:13,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:05:13,626 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 302 [2021-11-19 14:05:13,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:05:13,686 INFO L225 Difference]: With dead ends: 14354 [2021-11-19 14:05:13,686 INFO L226 Difference]: Without dead ends: 14352 [2021-11-19 14:05:13,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 597 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:05:13,694 INFO L933 BasicCegarLoop]: 2388 mSDtfsCounter, 2304 mSDsluCounter, 4757 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2312 SdHoareTripleChecker+Valid, 7145 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:05:13,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2312 Valid, 7145 Invalid, 20 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:05:13,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14352 states. [2021-11-19 14:05:14,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14352 to 14352. [2021-11-19 14:05:14,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14352 states, 10483 states have (on average 1.3439855003338739) internal successors, (14089), 10522 states have internal predecessors, (14089), 3137 states have call successors, (3137), 730 states have call predecessors, (3137), 729 states have return successors, (3133), 3129 states have call predecessors, (3133), 3133 states have call successors, (3133) [2021-11-19 14:05:14,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14352 states to 14352 states and 20359 transitions. [2021-11-19 14:05:14,682 INFO L78 Accepts]: Start accepts. Automaton has 14352 states and 20359 transitions. Word has length 302 [2021-11-19 14:05:14,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:05:14,683 INFO L470 AbstractCegarLoop]: Abstraction has 14352 states and 20359 transitions. [2021-11-19 14:05:14,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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) [2021-11-19 14:05:14,683 INFO L276 IsEmpty]: Start isEmpty. Operand 14352 states and 20359 transitions. [2021-11-19 14:05:14,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2021-11-19 14:05:14,700 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:05:14,701 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:05:14,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:05:14,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:05:14,918 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:05:14,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:05:14,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1464716916, now seen corresponding path program 1 times [2021-11-19 14:05:14,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:05:14,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [280753235] [2021-11-19 14:05:14,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:05:14,922 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:05:14,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:05:14,923 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:05:14,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:05:16,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:05:16,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 2077 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:05:16,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:05:18,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1679 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1671 trivial. 0 not checked. [2021-11-19 14:05:18,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:05:20,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1679 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1671 trivial. 0 not checked. [2021-11-19 14:05:20,192 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:05:20,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [280753235] [2021-11-19 14:05:20,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [280753235] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:05:20,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:05:20,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:05:20,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991632091] [2021-11-19 14:05:20,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:05:20,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:05:20,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:05:20,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:05:20,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:05:20,195 INFO L87 Difference]: Start difference. First operand 14352 states and 20359 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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) [2021-11-19 14:05:20,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:05:20,991 INFO L93 Difference]: Finished difference Result 14358 states and 20364 transitions. [2021-11-19 14:05:20,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:05:20,992 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 307 [2021-11-19 14:05:20,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:05:21,057 INFO L225 Difference]: With dead ends: 14358 [2021-11-19 14:05:21,058 INFO L226 Difference]: Without dead ends: 14356 [2021-11-19 14:05:21,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 615 GetRequests, 607 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:05:21,064 INFO L933 BasicCegarLoop]: 2388 mSDtfsCounter, 2304 mSDsluCounter, 4757 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2311 SdHoareTripleChecker+Valid, 7145 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:05:21,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2311 Valid, 7145 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:05:21,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14356 states. [2021-11-19 14:05:22,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14356 to 14356. [2021-11-19 14:05:22,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14356 states, 10486 states have (on average 1.3438870875452984) internal successors, (14092), 10525 states have internal predecessors, (14092), 3137 states have call successors, (3137), 731 states have call predecessors, (3137), 730 states have return successors, (3133), 3129 states have call predecessors, (3133), 3133 states have call successors, (3133) [2021-11-19 14:05:22,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14356 states to 14356 states and 20362 transitions. [2021-11-19 14:05:22,195 INFO L78 Accepts]: Start accepts. Automaton has 14356 states and 20362 transitions. Word has length 307 [2021-11-19 14:05:22,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:05:22,196 INFO L470 AbstractCegarLoop]: Abstraction has 14356 states and 20362 transitions. [2021-11-19 14:05:22,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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) [2021-11-19 14:05:22,196 INFO L276 IsEmpty]: Start isEmpty. Operand 14356 states and 20362 transitions. [2021-11-19 14:05:22,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2021-11-19 14:05:22,215 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:05:22,215 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 8, 8, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:05:22,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:05:22,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:05:22,435 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:05:22,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:05:22,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1342567629, now seen corresponding path program 1 times [2021-11-19 14:05:22,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:05:22,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [994552426] [2021-11-19 14:05:22,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:05:22,439 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:05:22,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:05:22,440 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:05:22,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:05:24,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:05:24,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 2752 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:05:24,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:05:26,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1677 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 1623 trivial. 0 not checked. [2021-11-19 14:05:26,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:05:26,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1677 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1677 trivial. 0 not checked. [2021-11-19 14:05:26,973 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:05:26,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [994552426] [2021-11-19 14:05:26,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [994552426] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:05:26,973 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:05:26,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:05:26,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775952046] [2021-11-19 14:05:26,974 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:05:26,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:05:26,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:05:26,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:05:26,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:05:26,976 INFO L87 Difference]: Start difference. First operand 14356 states and 20362 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (58), 3 states have call predecessors, (58), 3 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2021-11-19 14:05:29,114 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:05:30,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:05:30,447 INFO L93 Difference]: Finished difference Result 38734 states and 54986 transitions. [2021-11-19 14:05:30,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:05:30,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (58), 3 states have call predecessors, (58), 3 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) Word has length 435 [2021-11-19 14:05:30,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:05:30,580 INFO L225 Difference]: With dead ends: 38734 [2021-11-19 14:05:30,580 INFO L226 Difference]: Without dead ends: 24419 [2021-11-19 14:05:30,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 868 GetRequests, 867 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:05:30,639 INFO L933 BasicCegarLoop]: 2757 mSDtfsCounter, 1936 mSDsluCounter, 2348 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1936 SdHoareTripleChecker+Valid, 5105 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:05:30,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1936 Valid, 5105 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 39 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2021-11-19 14:05:30,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24419 states. [2021-11-19 14:05:32,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24419 to 24370. [2021-11-19 14:05:32,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24370 states, 17686 states have (on average 1.3438312789777225) internal successors, (23767), 17743 states have internal predecessors, (23767), 5409 states have call successors, (5409), 1273 states have call predecessors, (5409), 1272 states have return successors, (5405), 5390 states have call predecessors, (5405), 5405 states have call successors, (5405) [2021-11-19 14:05:32,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24370 states to 24370 states and 34581 transitions. [2021-11-19 14:05:32,480 INFO L78 Accepts]: Start accepts. Automaton has 24370 states and 34581 transitions. Word has length 435 [2021-11-19 14:05:32,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:05:32,481 INFO L470 AbstractCegarLoop]: Abstraction has 24370 states and 34581 transitions. [2021-11-19 14:05:32,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (58), 3 states have call predecessors, (58), 3 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2021-11-19 14:05:32,481 INFO L276 IsEmpty]: Start isEmpty. Operand 24370 states and 34581 transitions. [2021-11-19 14:05:32,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2021-11-19 14:05:32,490 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:05:32,491 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 6, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:05:32,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 14:05:32,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:05:32,707 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:05:32,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:05:32,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1067494659, now seen corresponding path program 1 times [2021-11-19 14:05:32,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:05:32,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2071738030] [2021-11-19 14:05:32,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:05:32,711 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:05:32,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:05:32,715 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:05:32,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 14:05:34,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:05:34,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 2084 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:05:34,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:05:36,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1697 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1687 trivial. 0 not checked. [2021-11-19 14:05:36,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:05:38,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1697 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1687 trivial. 0 not checked. [2021-11-19 14:05:38,074 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:05:38,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2071738030] [2021-11-19 14:05:38,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2071738030] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:05:38,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:05:38,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:05:38,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774627397] [2021-11-19 14:05:38,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:05:38,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:05:38,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:05:38,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:05:38,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:05:38,077 INFO L87 Difference]: Start difference. First operand 24370 states and 34581 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-19 14:05:39,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:05:39,130 INFO L93 Difference]: Finished difference Result 24376 states and 34586 transitions. [2021-11-19 14:05:39,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:05:39,130 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 312 [2021-11-19 14:05:39,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:05:39,204 INFO L225 Difference]: With dead ends: 24376 [2021-11-19 14:05:39,204 INFO L226 Difference]: Without dead ends: 24374 [2021-11-19 14:05:39,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 625 GetRequests, 617 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:05:39,214 INFO L933 BasicCegarLoop]: 2388 mSDtfsCounter, 2304 mSDsluCounter, 4757 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2310 SdHoareTripleChecker+Valid, 7145 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:05:39,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2310 Valid, 7145 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:05:39,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24374 states. [2021-11-19 14:05:40,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24374 to 24374. [2021-11-19 14:05:40,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24374 states, 17689 states have (on average 1.343772966250212) internal successors, (23770), 17746 states have internal predecessors, (23770), 5409 states have call successors, (5409), 1274 states have call predecessors, (5409), 1273 states have return successors, (5405), 5390 states have call predecessors, (5405), 5405 states have call successors, (5405) [2021-11-19 14:05:40,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24374 states to 24374 states and 34584 transitions. [2021-11-19 14:05:40,826 INFO L78 Accepts]: Start accepts. Automaton has 24374 states and 34584 transitions. Word has length 312 [2021-11-19 14:05:40,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:05:40,828 INFO L470 AbstractCegarLoop]: Abstraction has 24374 states and 34584 transitions. [2021-11-19 14:05:40,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-19 14:05:40,828 INFO L276 IsEmpty]: Start isEmpty. Operand 24374 states and 34584 transitions. [2021-11-19 14:05:40,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2021-11-19 14:05:40,840 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:05:40,841 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 8, 8, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:05:40,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 14:05:41,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:05:41,067 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:05:41,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:05:41,068 INFO L85 PathProgramCache]: Analyzing trace with hash 381872330, now seen corresponding path program 1 times [2021-11-19 14:05:41,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:05:41,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1395504832] [2021-11-19 14:05:41,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:05:41,070 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:05:41,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:05:41,072 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:05:41,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 14:05:42,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:05:42,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 2779 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:05:42,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:05:44,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1677 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 1623 trivial. 0 not checked. [2021-11-19 14:05:44,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:05:45,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1677 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1677 trivial. 0 not checked. [2021-11-19 14:05:45,465 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:05:45,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1395504832] [2021-11-19 14:05:45,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1395504832] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:05:45,465 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:05:45,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:05:45,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723353444] [2021-11-19 14:05:45,466 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:05:45,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:05:45,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:05:45,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:05:45,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:05:45,468 INFO L87 Difference]: Start difference. First operand 24374 states and 34584 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 4 states have call successors, (59), 3 states have call predecessors, (59), 3 states have return successors, (55), 4 states have call predecessors, (55), 4 states have call successors, (55) [2021-11-19 14:05:47,649 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:05:54,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:05:54,418 INFO L93 Difference]: Finished difference Result 77676 states and 109693 transitions. [2021-11-19 14:05:54,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:05:54,418 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 4 states have call successors, (59), 3 states have call predecessors, (59), 3 states have return successors, (55), 4 states have call predecessors, (55), 4 states have call successors, (55) Word has length 441 [2021-11-19 14:05:54,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:05:54,838 INFO L225 Difference]: With dead ends: 77676 [2021-11-19 14:05:54,838 INFO L226 Difference]: Without dead ends: 53343 [2021-11-19 14:05:54,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 880 GetRequests, 878 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:05:54,951 INFO L933 BasicCegarLoop]: 3408 mSDtfsCounter, 4834 mSDsluCounter, 3405 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 433 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4834 SdHoareTripleChecker+Valid, 6813 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:05:54,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4834 Valid, 6813 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 812 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2021-11-19 14:05:55,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53343 states. [2021-11-19 14:05:58,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53343 to 53169. [2021-11-19 14:05:58,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53169 states, 39085 states have (on average 1.3402072406293974) internal successors, (52382), 39290 states have internal predecessors, (52382), 11192 states have call successors, (11192), 2890 states have call predecessors, (11192), 2889 states have return successors, (11188), 11061 states have call predecessors, (11188), 11188 states have call successors, (11188) [2021-11-19 14:05:58,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53169 states to 53169 states and 74762 transitions. [2021-11-19 14:05:58,519 INFO L78 Accepts]: Start accepts. Automaton has 53169 states and 74762 transitions. Word has length 441 [2021-11-19 14:05:58,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:05:58,520 INFO L470 AbstractCegarLoop]: Abstraction has 53169 states and 74762 transitions. [2021-11-19 14:05:58,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 4 states have call successors, (59), 3 states have call predecessors, (59), 3 states have return successors, (55), 4 states have call predecessors, (55), 4 states have call successors, (55) [2021-11-19 14:05:58,520 INFO L276 IsEmpty]: Start isEmpty. Operand 53169 states and 74762 transitions. [2021-11-19 14:05:58,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2021-11-19 14:05:58,528 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:05:58,529 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 7, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:05:58,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 14:05:58,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:05:58,743 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:05:58,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:05:58,743 INFO L85 PathProgramCache]: Analyzing trace with hash -2104842348, now seen corresponding path program 1 times [2021-11-19 14:05:58,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:05:58,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1336518800] [2021-11-19 14:05:58,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:05:58,745 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:05:58,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:05:58,747 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:05:58,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 14:06:00,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:00,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 2091 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:06:00,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:06:02,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1719 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1707 trivial. 0 not checked. [2021-11-19 14:06:02,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:06:03,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1719 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1707 trivial. 0 not checked. [2021-11-19 14:06:03,415 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:06:03,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1336518800] [2021-11-19 14:06:03,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1336518800] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:06:03,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:06:03,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:06:03,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234014842] [2021-11-19 14:06:03,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:03,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:06:03,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:06:03,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:06:03,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:06:03,417 INFO L87 Difference]: Start difference. First operand 53169 states and 74762 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-19 14:06:05,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:05,724 INFO L93 Difference]: Finished difference Result 53175 states and 74767 transitions. [2021-11-19 14:06:05,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:06:05,724 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 317 [2021-11-19 14:06:05,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:05,892 INFO L225 Difference]: With dead ends: 53175 [2021-11-19 14:06:05,892 INFO L226 Difference]: Without dead ends: 53173 [2021-11-19 14:06:05,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 627 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:06:05,909 INFO L933 BasicCegarLoop]: 2388 mSDtfsCounter, 2304 mSDsluCounter, 4757 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2309 SdHoareTripleChecker+Valid, 7145 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:05,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2309 Valid, 7145 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:06:05,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53173 states. [2021-11-19 14:06:09,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53173 to 53173. [2021-11-19 14:06:09,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53173 states, 39088 states have (on average 1.3401811297584936) internal successors, (52385), 39293 states have internal predecessors, (52385), 11192 states have call successors, (11192), 2891 states have call predecessors, (11192), 2890 states have return successors, (11188), 11061 states have call predecessors, (11188), 11188 states have call successors, (11188) [2021-11-19 14:06:09,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53173 states to 53173 states and 74765 transitions. [2021-11-19 14:06:09,395 INFO L78 Accepts]: Start accepts. Automaton has 53173 states and 74765 transitions. Word has length 317 [2021-11-19 14:06:09,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:09,396 INFO L470 AbstractCegarLoop]: Abstraction has 53173 states and 74765 transitions. [2021-11-19 14:06:09,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-19 14:06:09,396 INFO L276 IsEmpty]: Start isEmpty. Operand 53173 states and 74765 transitions. [2021-11-19 14:06:09,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-11-19 14:06:09,402 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:09,402 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 8, 7, 7, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:09,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 14:06:09,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:06:09,627 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:06:09,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:09,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1012447075, now seen corresponding path program 1 times [2021-11-19 14:06:09,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:06:09,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [651784151] [2021-11-19 14:06:09,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:09,629 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:06:09,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:06:09,630 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:06:09,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d61c8c72-98b1-4c06-b623-1e199d4114c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 14:06:10,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:10,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 2098 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:06:10,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:06:13,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1745 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1731 trivial. 0 not checked. [2021-11-19 14:06:13,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:06:14,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1745 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1731 trivial. 0 not checked. [2021-11-19 14:06:14,445 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:06:14,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [651784151] [2021-11-19 14:06:14,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [651784151] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:06:14,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:06:14,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 14:06:14,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392923143] [2021-11-19 14:06:14,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:14,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:06:14,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:06:14,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:06:14,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:06:14,447 INFO L87 Difference]: Start difference. First operand 53173 states and 74765 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-19 14:06:17,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:17,067 INFO L93 Difference]: Finished difference Result 53536 states and 75025 transitions. [2021-11-19 14:06:17,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:06:17,067 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 322 [2021-11-19 14:06:17,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:17,323 INFO L225 Difference]: With dead ends: 53536 [2021-11-19 14:06:17,323 INFO L226 Difference]: Without dead ends: 53534 [2021-11-19 14:06:17,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 645 GetRequests, 637 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:06:17,337 INFO L933 BasicCegarLoop]: 2388 mSDtfsCounter, 2221 mSDsluCounter, 4843 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2225 SdHoareTripleChecker+Valid, 7231 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:17,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2225 Valid, 7231 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:06:17,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53534 states.