./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF --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 d4784d7b609e947942ffa9f8266acf243583adf996e2bcae78fb9e8c8fa71002 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:16:40,215 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:16:40,218 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:16:40,262 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:16:40,263 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:16:40,265 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:16:40,267 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:16:40,269 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:16:40,272 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:16:40,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:16:40,275 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:16:40,276 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:16:40,277 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:16:40,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:16:40,280 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:16:40,282 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:16:40,283 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:16:40,285 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:16:40,288 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:16:40,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:16:40,293 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:16:40,298 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:16:40,299 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:16:40,300 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:16:40,304 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:16:40,304 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:16:40,304 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:16:40,306 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:16:40,306 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:16:40,307 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:16:40,308 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:16:40,309 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:16:40,310 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:16:40,311 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:16:40,312 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:16:40,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:16:40,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:16:40,314 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:16:40,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:16:40,316 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:16:40,317 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:16:40,318 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 23:16:40,349 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:16:40,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:16:40,351 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:16:40,351 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:16:40,351 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:16:40,352 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:16:40,352 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:16:40,352 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:16:40,353 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:16:40,353 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:16:40,353 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:16:40,354 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:16:40,354 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:16:40,355 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:16:40,355 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:16:40,355 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:16:40,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:16:40,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:16:40,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:16:40,357 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:16:40,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:16:40,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:16:40,358 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:16:40,359 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:16:40,359 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:16:40,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:16:40,360 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:16:40,360 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:16:40,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:16:40,361 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:16:40,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:16:40,362 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:16:40,362 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:16:40,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:16:40,363 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:16:40,363 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:16:40,363 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:16:40,363 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_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4784d7b609e947942ffa9f8266acf243583adf996e2bcae78fb9e8c8fa71002 [2021-11-12 23:16:40,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:16:40,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:16:40,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:16:40,628 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:16:40,629 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:16:40,631 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i [2021-11-12 23:16:40,691 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/data/b43e4d67b/f12404c4d31e454bb00eae7076a38434/FLAG8bf847879 [2021-11-12 23:16:41,618 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:16:41,619 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i [2021-11-12 23:16:41,667 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/data/b43e4d67b/f12404c4d31e454bb00eae7076a38434/FLAG8bf847879 [2021-11-12 23:16:42,069 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/data/b43e4d67b/f12404c4d31e454bb00eae7076a38434 [2021-11-12 23:16:42,073 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:16:42,076 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:16:42,079 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:16:42,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:16:42,084 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:16:42,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:16:42" (1/1) ... [2021-11-12 23:16:42,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a853f84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:42, skipping insertion in model container [2021-11-12 23:16:42,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:16:42" (1/1) ... [2021-11-12 23:16:42,096 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:16:42,308 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:16:44,455 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:16:44,468 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:16:45,544 WARN L228 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_02667086-d0f7-4eb2-bfa5-698db2d7be5d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349228,349241] [2021-11-12 23:16:45,547 WARN L228 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_02667086-d0f7-4eb2-bfa5-698db2d7be5d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349397,349410] [2021-11-12 23:16:45,547 WARN L228 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_02667086-d0f7-4eb2-bfa5-698db2d7be5d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349564,349577] [2021-11-12 23:16:45,548 WARN L228 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_02667086-d0f7-4eb2-bfa5-698db2d7be5d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349732,349745] [2021-11-12 23:16:45,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:16:45,626 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) [2021-11-12 23:16:45,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@36f96a45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:45, skipping insertion in model container [2021-11-12 23:16:45,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:16:45,628 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:16:45,630 INFO L158 Benchmark]: Toolchain (without parser) took 3552.71ms. Allocated memory was 90.2MB in the beginning and 134.2MB in the end (delta: 44.0MB). Free memory was 60.5MB in the beginning and 61.1MB in the end (delta: -627.6kB). Peak memory consumption was 51.9MB. Max. memory is 16.1GB. [2021-11-12 23:16:45,630 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 90.2MB. Free memory is still 46.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:16:45,631 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3548.95ms. Allocated memory was 90.2MB in the beginning and 134.2MB in the end (delta: 44.0MB). Free memory was 60.2MB in the beginning and 61.1MB in the end (delta: -938.4kB). Peak memory consumption was 49.8MB. Max. memory is 16.1GB. [2021-11-12 23:16:45,633 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 90.2MB. Free memory is still 46.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3548.95ms. Allocated memory was 90.2MB in the beginning and 134.2MB in the end (delta: 44.0MB). Free memory was 60.2MB in the beginning and 61.1MB in the end (delta: -938.4kB). Peak memory consumption was 49.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6182]: 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_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF --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 d4784d7b609e947942ffa9f8266acf243583adf996e2bcae78fb9e8c8fa71002 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:16:47,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:16:47,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:16:47,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:16:47,987 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:16:47,991 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:16:47,993 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:16:47,997 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:16:48,001 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:16:48,008 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:16:48,010 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:16:48,012 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:16:48,012 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:16:48,015 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:16:48,017 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:16:48,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:16:48,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:16:48,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:16:48,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:16:48,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:16:48,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:16:48,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:16:48,039 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:16:48,041 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:16:48,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:16:48,050 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:16:48,050 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:16:48,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:16:48,053 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:16:48,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:16:48,055 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:16:48,056 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:16:48,058 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:16:48,058 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:16:48,060 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:16:48,060 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:16:48,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:16:48,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:16:48,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:16:48,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:16:48,064 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:16:48,069 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 23:16:48,114 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:16:48,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:16:48,116 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:16:48,116 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:16:48,117 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:16:48,117 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:16:48,117 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:16:48,117 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:16:48,118 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:16:48,118 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:16:48,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:16:48,121 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:16:48,121 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:16:48,121 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:16:48,121 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:16:48,122 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:16:48,122 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:16:48,122 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:16:48,122 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:16:48,122 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:16:48,123 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:16:48,123 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:16:48,123 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:16:48,124 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:16:48,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:16:48,124 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:16:48,124 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:16:48,125 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:16:48,125 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:16:48,125 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:16:48,125 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:16:48,126 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:16:48,126 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:16:48,126 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_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4784d7b609e947942ffa9f8266acf243583adf996e2bcae78fb9e8c8fa71002 [2021-11-12 23:16:48,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:16:48,552 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:16:48,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:16:48,556 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:16:48,557 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:16:48,558 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i [2021-11-12 23:16:48,628 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/data/2831445a5/715f5105bac248ffb374f22466dc2fe9/FLAG7c7f4ab3c [2021-11-12 23:16:49,576 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:16:49,577 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i [2021-11-12 23:16:49,632 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/data/2831445a5/715f5105bac248ffb374f22466dc2fe9/FLAG7c7f4ab3c [2021-11-12 23:16:50,015 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/data/2831445a5/715f5105bac248ffb374f22466dc2fe9 [2021-11-12 23:16:50,018 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:16:50,020 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:16:50,022 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:16:50,022 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:16:50,031 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:16:50,031 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:16:50" (1/1) ... [2021-11-12 23:16:50,032 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a0b4af5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:50, skipping insertion in model container [2021-11-12 23:16:50,032 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:16:50" (1/1) ... [2021-11-12 23:16:50,055 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:16:50,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:16:53,543 WARN L228 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_02667086-d0f7-4eb2-bfa5-698db2d7be5d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349228,349241] [2021-11-12 23:16:53,546 WARN L228 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_02667086-d0f7-4eb2-bfa5-698db2d7be5d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349397,349410] [2021-11-12 23:16:53,546 WARN L228 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_02667086-d0f7-4eb2-bfa5-698db2d7be5d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349564,349577] [2021-11-12 23:16:53,547 WARN L228 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_02667086-d0f7-4eb2-bfa5-698db2d7be5d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349732,349745] [2021-11-12 23:16:53,580 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:16:53,678 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:16:53,780 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:16:54,201 WARN L228 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_02667086-d0f7-4eb2-bfa5-698db2d7be5d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349228,349241] [2021-11-12 23:16:54,202 WARN L228 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_02667086-d0f7-4eb2-bfa5-698db2d7be5d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349397,349410] [2021-11-12 23:16:54,202 WARN L228 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_02667086-d0f7-4eb2-bfa5-698db2d7be5d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349564,349577] [2021-11-12 23:16:54,203 WARN L228 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_02667086-d0f7-4eb2-bfa5-698db2d7be5d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349732,349745] [2021-11-12 23:16:54,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:16:54,249 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:16:54,657 WARN L228 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_02667086-d0f7-4eb2-bfa5-698db2d7be5d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349228,349241] [2021-11-12 23:16:54,657 WARN L228 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_02667086-d0f7-4eb2-bfa5-698db2d7be5d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349397,349410] [2021-11-12 23:16:54,658 WARN L228 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_02667086-d0f7-4eb2-bfa5-698db2d7be5d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349564,349577] [2021-11-12 23:16:54,658 WARN L228 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_02667086-d0f7-4eb2-bfa5-698db2d7be5d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349732,349745] [2021-11-12 23:16:54,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:16:54,995 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:16:54,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:54 WrapperNode [2021-11-12 23:16:54,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:16:55,000 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:16:55,001 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:16:55,001 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:16:55,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:54" (1/1) ... [2021-11-12 23:16:55,150 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:54" (1/1) ... [2021-11-12 23:16:55,421 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:16:55,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:16:55,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:16:55,423 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:16:55,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:54" (1/1) ... [2021-11-12 23:16:55,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:54" (1/1) ... [2021-11-12 23:16:55,504 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:54" (1/1) ... [2021-11-12 23:16:55,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:54" (1/1) ... [2021-11-12 23:16:55,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:54" (1/1) ... [2021-11-12 23:16:55,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:54" (1/1) ... [2021-11-12 23:16:55,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:54" (1/1) ... [2021-11-12 23:16:55,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:16:55,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:16:55,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:16:55,819 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:16:55,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:54" (1/1) ... [2021-11-12 23:16:55,826 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:16:55,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:16:55,849 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:16:55,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:16:55,892 INFO L130 BoogieDeclarations]: Found specification of procedure check_if_running [2021-11-12 23:16:55,893 INFO L138 BoogieDeclarations]: Found implementation of procedure check_if_running [2021-11-12 23:16:55,893 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2021-11-12 23:16:55,893 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2021-11-12 23:16:55,893 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-12 23:16:55,893 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-12 23:16:55,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-12 23:16:55,894 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-12 23:16:55,894 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-12 23:16:55,894 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-12 23:16:55,894 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-12 23:16:55,894 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-12 23:16:55,895 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-12 23:16:55,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-12 23:16:55,895 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-12 23:16:55,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-12 23:16:55,895 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-12 23:16:55,896 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-12 23:16:55,896 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-11-12 23:16:55,896 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-11-12 23:16:55,896 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2021-11-12 23:16:55,896 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2021-11-12 23:16:55,896 INFO L130 BoogieDeclarations]: Found specification of procedure reset_tx [2021-11-12 23:16:55,897 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_tx [2021-11-12 23:16:55,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_66 [2021-11-12 23:16:55,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_66 [2021-11-12 23:16:55,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_76 [2021-11-12 23:16:55,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_76 [2021-11-12 23:16:55,898 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-12 23:16:55,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-12 23:16:55,898 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-12 23:16:55,898 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-12 23:16:55,898 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-12 23:16:55,898 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-12 23:16:55,899 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-12 23:16:55,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-12 23:16:55,899 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-12 23:16:55,899 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-12 23:16:55,899 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-12 23:16:55,900 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-12 23:16:55,900 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-12 23:16:55,900 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-12 23:16:55,900 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-12 23:16:55,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-12 23:16:55,900 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-12 23:16:55,901 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-12 23:16:55,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:16:55,901 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_69 [2021-11-12 23:16:55,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_69 [2021-11-12 23:16:55,901 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2021-11-12 23:16:55,902 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2021-11-12 23:16:55,902 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2021-11-12 23:16:55,902 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2021-11-12 23:16:55,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:16:55,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 23:16:55,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-12 23:16:55,903 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-12 23:16:55,903 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-12 23:16:55,903 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-12 23:16:55,903 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-12 23:16:55,903 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-12 23:16:55,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-12 23:16:55,904 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-12 23:16:55,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-12 23:16:55,904 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-12 23:16:55,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-12 23:16:55,904 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2021-11-12 23:16:55,905 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2021-11-12 23:16:55,905 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-12 23:16:55,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-12 23:16:55,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-12 23:16:55,905 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-12 23:16:55,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-12 23:16:55,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-12 23:16:55,906 INFO L130 BoogieDeclarations]: Found specification of procedure check_duplex [2021-11-12 23:16:55,906 INFO L138 BoogieDeclarations]: Found implementation of procedure check_duplex [2021-11-12 23:16:55,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-12 23:16:55,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-12 23:16:55,906 INFO L130 BoogieDeclarations]: Found specification of procedure pci_choose_state [2021-11-12 23:16:55,907 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_choose_state [2021-11-12 23:16:55,907 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-12 23:16:55,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-12 23:16:55,907 INFO L130 BoogieDeclarations]: Found specification of procedure tx_timeout [2021-11-12 23:16:55,907 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_timeout [2021-11-12 23:16:55,908 INFO L130 BoogieDeclarations]: Found specification of procedure sundance_resume [2021-11-12 23:16:55,908 INFO L138 BoogieDeclarations]: Found implementation of procedure sundance_resume [2021-11-12 23:16:55,908 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-12 23:16:55,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-12 23:16:55,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:16:55,908 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-12 23:16:55,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-12 23:16:55,909 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-12 23:16:55,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-12 23:16:55,909 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2021-11-12 23:16:55,909 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2021-11-12 23:16:55,909 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-12 23:16:55,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-12 23:16:55,910 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-12 23:16:55,910 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-12 23:16:55,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:16:55,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-12 23:16:55,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-12 23:16:55,911 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-11-12 23:16:55,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-11-12 23:16:55,911 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-12 23:16:55,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-12 23:16:55,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-12 23:16:55,912 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2021-11-12 23:16:55,912 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2021-11-12 23:16:55,912 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2021-11-12 23:16:55,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2021-11-12 23:16:55,912 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-12 23:16:55,912 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-12 23:16:55,913 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-12 23:16:55,913 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-12 23:16:55,913 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-12 23:16:55,913 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-12 23:16:55,913 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-12 23:16:55,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-12 23:16:55,914 INFO L130 BoogieDeclarations]: Found specification of procedure __set_mac_addr [2021-11-12 23:16:55,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_mac_addr [2021-11-12 23:16:55,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-12 23:16:55,914 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-11-12 23:16:55,914 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-11-12 23:16:55,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:16:55,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:16:55,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_sundance_exit_14_2 [2021-11-12 23:16:55,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_sundance_exit_14_2 [2021-11-12 23:16:55,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 23:16:55,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 23:16:55,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 23:16:55,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-12 23:16:55,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-12 23:16:55,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-12 23:16:55,916 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-12 23:16:55,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-12 23:16:55,916 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_close [2021-11-12 23:16:55,917 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_close [2021-11-12 23:16:55,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-12 23:16:55,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-12 23:16:55,917 INFO L130 BoogieDeclarations]: Found specification of procedure get_stats [2021-11-12 23:16:55,917 INFO L138 BoogieDeclarations]: Found implementation of procedure get_stats [2021-11-12 23:16:55,917 INFO L130 BoogieDeclarations]: Found specification of procedure sundance_poll_controller [2021-11-12 23:16:55,918 INFO L138 BoogieDeclarations]: Found implementation of procedure sundance_poll_controller [2021-11-12 23:16:55,918 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-12 23:16:55,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-12 23:16:55,918 INFO L130 BoogieDeclarations]: Found specification of procedure nway_reset [2021-11-12 23:16:55,918 INFO L138 BoogieDeclarations]: Found implementation of procedure nway_reset [2021-11-12 23:16:55,918 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_netdev_private [2021-11-12 23:16:55,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_netdev_private [2021-11-12 23:16:55,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-12 23:16:55,919 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-12 23:16:55,919 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-12 23:16:55,919 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-12 23:16:55,919 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2021-11-12 23:16:55,920 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2021-11-12 23:16:55,920 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2021-11-12 23:16:55,920 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2021-11-12 23:16:55,920 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-12 23:16:55,920 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-12 23:16:55,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:16:55,921 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-12 23:16:55,921 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-12 23:16:55,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_75 [2021-11-12 23:16:55,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_75 [2021-11-12 23:16:55,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:16:55,921 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-12 23:16:55,922 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-12 23:16:55,922 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-12 23:16:55,922 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-12 23:16:55,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 23:16:55,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 23:16:55,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-12 23:16:55,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 23:16:55,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 23:16:55,923 INFO L130 BoogieDeclarations]: Found specification of procedure intr_handler [2021-11-12 23:16:55,923 INFO L138 BoogieDeclarations]: Found implementation of procedure intr_handler [2021-11-12 23:16:55,923 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-12 23:16:55,923 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-12 23:16:55,923 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~TO~VOID [2021-11-12 23:16:55,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~TO~VOID [2021-11-12 23:16:55,924 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-12 23:16:55,924 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-12 23:16:55,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_netdev_private [2021-11-12 23:16:55,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_netdev_private [2021-11-12 23:16:55,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-12 23:16:55,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-12 23:16:55,925 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-11-12 23:16:55,925 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-11-12 23:16:55,925 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_sync [2021-11-12 23:16:55,925 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_sync [2021-11-12 23:16:55,925 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_open [2021-11-12 23:16:55,926 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_open [2021-11-12 23:16:55,926 INFO L130 BoogieDeclarations]: Found specification of procedure sundance_reset [2021-11-12 23:16:55,926 INFO L138 BoogieDeclarations]: Found implementation of procedure sundance_reset [2021-11-12 23:16:55,926 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-12 23:16:55,926 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-12 23:16:55,926 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-12 23:16:55,927 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-12 23:16:55,927 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-12 23:16:55,927 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-12 23:16:55,927 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-12 23:16:55,927 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-12 23:16:55,928 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-12 23:16:55,928 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-12 23:16:55,928 INFO L130 BoogieDeclarations]: Found specification of procedure sundance_remove1 [2021-11-12 23:16:55,928 INFO L138 BoogieDeclarations]: Found implementation of procedure sundance_remove1 [2021-11-12 23:16:55,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_70 [2021-11-12 23:16:55,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_70 [2021-11-12 23:16:55,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-12 23:16:55,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-12 23:16:55,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-12 23:16:55,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-12 23:16:55,929 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-12 23:16:55,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-12 23:16:55,930 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-12 23:16:55,930 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-12 23:16:55,930 INFO L130 BoogieDeclarations]: Found specification of procedure refill_rx [2021-11-12 23:16:55,930 INFO L138 BoogieDeclarations]: Found implementation of procedure refill_rx [2021-11-12 23:16:55,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-12 23:16:55,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-12 23:16:55,931 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-12 23:16:55,931 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-12 23:16:55,931 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-12 23:16:55,931 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-12 23:16:55,931 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-11-12 23:16:55,931 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-11-12 23:16:55,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-12 23:16:55,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-12 23:16:55,932 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-12 23:16:55,932 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-12 23:17:03,597 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-12 23:19:14,759 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-12 23:19:14,881 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:19:14,881 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-12 23:19:14,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:19:14 BoogieIcfgContainer [2021-11-12 23:19:14,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:19:14,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:19:14,890 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:19:14,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:19:14,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:16:50" (1/3) ... [2021-11-12 23:19:14,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f447e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:19:14, skipping insertion in model container [2021-11-12 23:19:14,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:16:54" (2/3) ... [2021-11-12 23:19:14,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f447e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:19:14, skipping insertion in model container [2021-11-12 23:19:14,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:19:14" (3/3) ... [2021-11-12 23:19:14,902 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i [2021-11-12 23:19:14,908 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:19:14,909 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-12 23:19:14,982 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:19:14,993 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 [2021-11-12 23:19:14,994 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-12 23:19:15,059 INFO L276 IsEmpty]: Start isEmpty. Operand has 1917 states, 1307 states have (on average 1.2685539403213466) internal successors, (1658), 1345 states have internal predecessors, (1658), 511 states have call successors, (511), 101 states have call predecessors, (511), 100 states have return successors, (505), 498 states have call predecessors, (505), 505 states have call successors, (505) [2021-11-12 23:19:15,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-12 23:19:15,080 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:19:15,081 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:19:15,082 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)] === [2021-11-12 23:19:15,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:19:15,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1904040031, now seen corresponding path program 1 times [2021-11-12 23:19:15,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:19:15,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1767794226] [2021-11-12 23:19:15,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:19:15,107 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:19:15,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:19:15,110 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:19:15,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:19:17,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:19:17,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 1795 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:19:17,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:19:18,474 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2021-11-12 23:19:18,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:19:18,952 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2021-11-12 23:19:18,953 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:19:18,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1767794226] [2021-11-12 23:19:18,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1767794226] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:19:18,954 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:19:18,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:19:18,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356635320] [2021-11-12 23:19:18,958 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:19:18,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:19:18,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:19:19,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:19:19,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:19:19,012 INFO L87 Difference]: Start difference. First operand has 1917 states, 1307 states have (on average 1.2685539403213466) internal successors, (1658), 1345 states have internal predecessors, (1658), 511 states have call successors, (511), 101 states have call predecessors, (511), 100 states have return successors, (505), 498 states have call predecessors, (505), 505 states have call successors, (505) Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-11-12 23:19:21,379 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:19:26,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:19:26,898 INFO L93 Difference]: Finished difference Result 7380 states and 10506 transitions. [2021-11-12 23:19:26,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:19:26,902 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 171 [2021-11-12 23:19:26,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:19:26,961 INFO L225 Difference]: With dead ends: 7380 [2021-11-12 23:19:26,962 INFO L226 Difference]: Without dead ends: 5477 [2021-11-12 23:19:26,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:19:26,987 INFO L933 BasicCegarLoop]: 3567 mSDtfsCounter, 5034 mSDsluCounter, 4668 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6638.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5034 SdHoareTripleChecker+Valid, 8235 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 75.81ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7253.97ms IncrementalHoareTripleChecker+Time [2021-11-12 23:19:26,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5034 Valid, 8235 Invalid, 1022 Unknown, 0 Unchecked, 75.81ms Time], IncrementalHoareTripleChecker [19 Valid, 1002 Invalid, 1 Unknown, 0 Unchecked, 7253.97ms Time] [2021-11-12 23:19:27,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5477 states. [2021-11-12 23:19:27,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5477 to 5450. [2021-11-12 23:19:27,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5450 states, 3743 states have (on average 1.263959390862944) internal successors, (4731), 3841 states have internal predecessors, (4731), 1411 states have call successors, (1411), 294 states have call predecessors, (1411), 293 states have return successors, (1407), 1386 states have call predecessors, (1407), 1407 states have call successors, (1407) [2021-11-12 23:19:27,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5450 states to 5450 states and 7549 transitions. [2021-11-12 23:19:27,471 INFO L78 Accepts]: Start accepts. Automaton has 5450 states and 7549 transitions. Word has length 171 [2021-11-12 23:19:27,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:19:27,475 INFO L470 AbstractCegarLoop]: Abstraction has 5450 states and 7549 transitions. [2021-11-12 23:19:27,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-11-12 23:19:27,476 INFO L276 IsEmpty]: Start isEmpty. Operand 5450 states and 7549 transitions. [2021-11-12 23:19:27,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-12 23:19:27,490 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:19:27,490 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:19:27,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:19:27,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:19:27,712 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)] === [2021-11-12 23:19:27,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:19:27,713 INFO L85 PathProgramCache]: Analyzing trace with hash -702002883, now seen corresponding path program 1 times [2021-11-12 23:19:27,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:19:27,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1071927506] [2021-11-12 23:19:27,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:19:27,717 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:19:27,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:19:27,722 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:19:27,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:19:30,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:19:30,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 1835 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:19:30,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:19:30,955 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2021-11-12 23:19:30,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:19:31,440 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2021-11-12 23:19:31,440 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:19:31,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1071927506] [2021-11-12 23:19:31,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1071927506] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:19:31,441 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:19:31,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:19:31,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263320719] [2021-11-12 23:19:31,441 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:19:31,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:19:31,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:19:31,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:19:31,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:19:31,445 INFO L87 Difference]: Start difference. First operand 5450 states and 7549 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-12 23:19:33,708 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:19:34,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:19:34,580 INFO L93 Difference]: Finished difference Result 15379 states and 21293 transitions. [2021-11-12 23:19:34,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:19:34,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 180 [2021-11-12 23:19:34,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:19:34,682 INFO L225 Difference]: With dead ends: 15379 [2021-11-12 23:19:34,683 INFO L226 Difference]: Without dead ends: 9960 [2021-11-12 23:19:34,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:19:34,715 INFO L933 BasicCegarLoop]: 3062 mSDtfsCounter, 2158 mSDsluCounter, 2516 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2486.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2158 SdHoareTripleChecker+Valid, 5578 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.49ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2591.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:19:34,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2158 Valid, 5578 Invalid, 89 Unknown, 0 Unchecked, 21.49ms Time], IncrementalHoareTripleChecker [7 Valid, 81 Invalid, 1 Unknown, 0 Unchecked, 2591.00ms Time] [2021-11-12 23:19:34,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9960 states. [2021-11-12 23:19:35,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9960 to 9928. [2021-11-12 23:19:35,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9928 states, 6736 states have (on average 1.2602434679334917) internal successors, (8489), 6930 states have internal predecessors, (8489), 2619 states have call successors, (2619), 574 states have call predecessors, (2619), 570 states have return successors, (2624), 2561 states have call predecessors, (2624), 2615 states have call successors, (2624) [2021-11-12 23:19:35,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9928 states to 9928 states and 13732 transitions. [2021-11-12 23:19:35,341 INFO L78 Accepts]: Start accepts. Automaton has 9928 states and 13732 transitions. Word has length 180 [2021-11-12 23:19:35,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:19:35,346 INFO L470 AbstractCegarLoop]: Abstraction has 9928 states and 13732 transitions. [2021-11-12 23:19:35,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-12 23:19:35,347 INFO L276 IsEmpty]: Start isEmpty. Operand 9928 states and 13732 transitions. [2021-11-12 23:19:35,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-11-12 23:19:35,353 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:19:35,353 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:19:35,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:19:35,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:19:35,576 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:19:35,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:19:35,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1722043541, now seen corresponding path program 1 times [2021-11-12 23:19:35,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:19:35,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1930292319] [2021-11-12 23:19:35,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:19:35,580 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:19:35,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:19:35,586 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:19:35,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:19:38,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:19:38,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 1885 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:19:38,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:19:38,873 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2021-11-12 23:19:38,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:19:39,396 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2021-11-12 23:19:39,397 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:19:39,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1930292319] [2021-11-12 23:19:39,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1930292319] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:19:39,397 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:19:39,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:19:39,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997512613] [2021-11-12 23:19:39,398 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:19:39,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:19:39,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:19:39,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:19:39,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:19:39,400 INFO L87 Difference]: Start difference. First operand 9928 states and 13732 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2021-11-12 23:19:41,696 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:19:49,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:19:49,258 INFO L93 Difference]: Finished difference Result 38671 states and 53614 transitions. [2021-11-12 23:19:49,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:19:49,260 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 198 [2021-11-12 23:19:49,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:19:49,493 INFO L225 Difference]: With dead ends: 38671 [2021-11-12 23:19:49,494 INFO L226 Difference]: Without dead ends: 28774 [2021-11-12 23:19:49,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 392 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:19:49,563 INFO L933 BasicCegarLoop]: 3654 mSDtfsCounter, 6604 mSDsluCounter, 4016 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 986 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7818.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6604 SdHoareTripleChecker+Valid, 7670 SdHoareTripleChecker+Invalid, 1958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 50.87ms SdHoareTripleChecker+Time, 986 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8755.55ms IncrementalHoareTripleChecker+Time [2021-11-12 23:19:49,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6604 Valid, 7670 Invalid, 1958 Unknown, 0 Unchecked, 50.87ms Time], IncrementalHoareTripleChecker [986 Valid, 971 Invalid, 1 Unknown, 0 Unchecked, 8755.55ms Time] [2021-11-12 23:19:49,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28774 states. [2021-11-12 23:19:51,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28774 to 28698. [2021-11-12 23:19:51,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28698 states, 19470 states have (on average 1.2638418079096045) internal successors, (24607), 20084 states have internal predecessors, (24607), 7547 states have call successors, (7547), 1706 states have call predecessors, (7547), 1678 states have return successors, (7648), 7309 states have call predecessors, (7648), 7543 states have call successors, (7648) [2021-11-12 23:19:51,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28698 states to 28698 states and 39802 transitions. [2021-11-12 23:19:51,356 INFO L78 Accepts]: Start accepts. Automaton has 28698 states and 39802 transitions. Word has length 198 [2021-11-12 23:19:51,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:19:51,358 INFO L470 AbstractCegarLoop]: Abstraction has 28698 states and 39802 transitions. [2021-11-12 23:19:51,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2021-11-12 23:19:51,359 INFO L276 IsEmpty]: Start isEmpty. Operand 28698 states and 39802 transitions. [2021-11-12 23:19:51,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-12 23:19:51,366 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:19:51,366 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 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] [2021-11-12 23:19:51,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:19:51,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:19:51,586 INFO L402 AbstractCegarLoop]: === Iteration 4 === 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)] === [2021-11-12 23:19:51,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:19:51,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1666697341, now seen corresponding path program 1 times [2021-11-12 23:19:51,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:19:51,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1948132579] [2021-11-12 23:19:51,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:19:51,589 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:19:51,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:19:51,590 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:19:51,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:19:54,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:19:54,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 1961 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:19:54,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:19:54,800 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 705 trivial. 0 not checked. [2021-11-12 23:19:54,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:19:55,313 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 744 trivial. 0 not checked. [2021-11-12 23:19:55,315 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:19:55,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1948132579] [2021-11-12 23:19:55,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1948132579] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:19:55,315 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:19:55,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:19:55,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488675924] [2021-11-12 23:19:55,316 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:19:55,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:19:55,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:19:55,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:19:55,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:19:55,317 INFO L87 Difference]: Start difference. First operand 28698 states and 39802 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 4 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2021-11-12 23:19:57,542 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:20:03,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:20:03,171 INFO L93 Difference]: Finished difference Result 70041 states and 96283 transitions. [2021-11-12 23:20:03,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:20:03,171 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 4 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 210 [2021-11-12 23:20:03,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:20:03,416 INFO L225 Difference]: With dead ends: 70041 [2021-11-12 23:20:03,416 INFO L226 Difference]: Without dead ends: 41374 [2021-11-12 23:20:03,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:20:03,565 INFO L933 BasicCegarLoop]: 4042 mSDtfsCounter, 4197 mSDsluCounter, 4232 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 41 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5759.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4197 SdHoareTripleChecker+Valid, 8274 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.82ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6309.42ms IncrementalHoareTripleChecker+Time [2021-11-12 23:20:03,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4197 Valid, 8274 Invalid, 1113 Unknown, 0 Unchecked, 24.82ms Time], IncrementalHoareTripleChecker [41 Valid, 1071 Invalid, 1 Unknown, 0 Unchecked, 6309.42ms Time] [2021-11-12 23:20:03,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41374 states. [2021-11-12 23:20:05,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41374 to 41302. [2021-11-12 23:20:05,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41302 states, 28440 states have (on average 1.256926863572433) internal successors, (35747), 29209 states have internal predecessors, (35747), 10201 states have call successors, (10201), 2707 states have call predecessors, (10201), 2658 states have return successors, (10267), 9895 states have call predecessors, (10267), 10197 states have call successors, (10267) [2021-11-12 23:20:06,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41302 states to 41302 states and 56215 transitions. [2021-11-12 23:20:06,126 INFO L78 Accepts]: Start accepts. Automaton has 41302 states and 56215 transitions. Word has length 210 [2021-11-12 23:20:06,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:20:06,127 INFO L470 AbstractCegarLoop]: Abstraction has 41302 states and 56215 transitions. [2021-11-12 23:20:06,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 4 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2021-11-12 23:20:06,127 INFO L276 IsEmpty]: Start isEmpty. Operand 41302 states and 56215 transitions. [2021-11-12 23:20:06,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-11-12 23:20:06,134 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:20:06,134 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 13, 13, 13, 13, 13, 13, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:20:06,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:20:06,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:20:06,360 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)] === [2021-11-12 23:20:06,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:20:06,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1764444987, now seen corresponding path program 1 times [2021-11-12 23:20:06,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:20:06,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1823887887] [2021-11-12 23:20:06,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:20:06,364 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:20:06,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:20:06,366 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:20:06,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:20:09,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:20:09,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 1920 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:20:09,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:20:10,857 INFO L134 CoverageAnalysis]: Checked inductivity of 910 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 910 trivial. 0 not checked. [2021-11-12 23:20:10,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:20:11,829 INFO L134 CoverageAnalysis]: Checked inductivity of 910 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 910 trivial. 0 not checked. [2021-11-12 23:20:11,829 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:20:11,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1823887887] [2021-11-12 23:20:11,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1823887887] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:20:11,830 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:20:11,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 7 [2021-11-12 23:20:11,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686972472] [2021-11-12 23:20:11,831 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:20:11,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:20:11,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:20:11,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:20:11,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:20:11,833 INFO L87 Difference]: Start difference. First operand 41302 states and 56215 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (47), 4 states have call predecessors, (47), 2 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2021-11-12 23:20:13,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:20:13,516 INFO L93 Difference]: Finished difference Result 41308 states and 56220 transitions. [2021-11-12 23:20:13,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:20:13,517 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (47), 4 states have call predecessors, (47), 2 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 227 [2021-11-12 23:20:13,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:20:13,748 INFO L225 Difference]: With dead ends: 41308 [2021-11-12 23:20:13,748 INFO L226 Difference]: Without dead ends: 41306 [2021-11-12 23:20:13,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 447 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:20:13,769 INFO L933 BasicCegarLoop]: 2617 mSDtfsCounter, 2517 mSDsluCounter, 10441 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 105.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2529 SdHoareTripleChecker+Valid, 13058 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 47.87ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 114.37ms IncrementalHoareTripleChecker+Time [2021-11-12 23:20:13,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2529 Valid, 13058 Invalid, 39 Unknown, 0 Unchecked, 47.87ms Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 114.37ms Time] [2021-11-12 23:20:13,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41306 states. [2021-11-12 23:20:16,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41306 to 41306. [2021-11-12 23:20:16,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41306 states, 28443 states have (on average 1.256899764441163) internal successors, (35750), 29212 states have internal predecessors, (35750), 10201 states have call successors, (10201), 2708 states have call predecessors, (10201), 2659 states have return successors, (10267), 9895 states have call predecessors, (10267), 10197 states have call successors, (10267) [2021-11-12 23:20:16,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41306 states to 41306 states and 56218 transitions. [2021-11-12 23:20:16,197 INFO L78 Accepts]: Start accepts. Automaton has 41306 states and 56218 transitions. Word has length 227 [2021-11-12 23:20:16,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:20:16,199 INFO L470 AbstractCegarLoop]: Abstraction has 41306 states and 56218 transitions. [2021-11-12 23:20:16,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (47), 4 states have call predecessors, (47), 2 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2021-11-12 23:20:16,199 INFO L276 IsEmpty]: Start isEmpty. Operand 41306 states and 56218 transitions. [2021-11-12 23:20:16,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-11-12 23:20:16,206 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:20:16,207 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 13, 13, 13, 13, 13, 13, 4, 4, 4, 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] [2021-11-12 23:20:16,267 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-12 23:20:16,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:20:16,420 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)] === [2021-11-12 23:20:16,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:20:16,421 INFO L85 PathProgramCache]: Analyzing trace with hash -692345477, now seen corresponding path program 1 times [2021-11-12 23:20:16,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:20:16,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [918893996] [2021-11-12 23:20:16,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:20:16,424 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:20:16,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:20:16,425 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:20:16,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:20:19,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:20:19,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 1927 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:20:19,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:20:20,732 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 910 trivial. 0 not checked. [2021-11-12 23:20:20,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:20:21,565 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 910 trivial. 0 not checked. [2021-11-12 23:20:21,565 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:20:21,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [918893996] [2021-11-12 23:20:21,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [918893996] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:20:21,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:20:21,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 23:20:21,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991803724] [2021-11-12 23:20:21,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:20:21,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:20:21,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:20:21,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:20:21,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:20:21,568 INFO L87 Difference]: Start difference. First operand 41306 states and 56218 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-12 23:20:23,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:20:23,168 INFO L93 Difference]: Finished difference Result 41312 states and 56223 transitions. [2021-11-12 23:20:23,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:20:23,169 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 232 [2021-11-12 23:20:23,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:20:23,365 INFO L225 Difference]: With dead ends: 41312 [2021-11-12 23:20:23,365 INFO L226 Difference]: Without dead ends: 41310 [2021-11-12 23:20:23,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 457 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:20:23,384 INFO L933 BasicCegarLoop]: 2620 mSDtfsCounter, 2548 mSDsluCounter, 5220 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2559 SdHoareTripleChecker+Valid, 7840 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.91ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.62ms IncrementalHoareTripleChecker+Time [2021-11-12 23:20:23,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2559 Valid, 7840 Invalid, 21 Unknown, 0 Unchecked, 14.91ms Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 53.62ms Time] [2021-11-12 23:20:23,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41310 states. [2021-11-12 23:20:25,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41310 to 41310. [2021-11-12 23:20:25,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41310 states, 28446 states have (on average 1.2568726710258034) internal successors, (35753), 29215 states have internal predecessors, (35753), 10201 states have call successors, (10201), 2709 states have call predecessors, (10201), 2660 states have return successors, (10267), 9895 states have call predecessors, (10267), 10197 states have call successors, (10267) [2021-11-12 23:20:25,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41310 states to 41310 states and 56221 transitions. [2021-11-12 23:20:25,784 INFO L78 Accepts]: Start accepts. Automaton has 41310 states and 56221 transitions. Word has length 232 [2021-11-12 23:20:25,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:20:25,785 INFO L470 AbstractCegarLoop]: Abstraction has 41310 states and 56221 transitions. [2021-11-12 23:20:25,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-12 23:20:25,785 INFO L276 IsEmpty]: Start isEmpty. Operand 41310 states and 56221 transitions. [2021-11-12 23:20:25,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-12 23:20:25,793 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:20:25,794 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 13, 13, 13, 13, 13, 13, 4, 4, 4, 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] [2021-11-12 23:20:25,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:20:26,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:20:26,016 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)] === [2021-11-12 23:20:26,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:20:26,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1482280517, now seen corresponding path program 1 times [2021-11-12 23:20:26,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:20:26,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [571168055] [2021-11-12 23:20:26,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:20:26,020 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:20:26,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:20:26,020 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:20:26,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:20:28,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:20:28,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 1934 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:20:28,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:20:30,155 INFO L134 CoverageAnalysis]: Checked inductivity of 918 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 914 trivial. 0 not checked. [2021-11-12 23:20:30,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:20:31,100 INFO L134 CoverageAnalysis]: Checked inductivity of 918 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 914 trivial. 0 not checked. [2021-11-12 23:20:31,100 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:20:31,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [571168055] [2021-11-12 23:20:31,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [571168055] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:20:31,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:20:31,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 23:20:31,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471781570] [2021-11-12 23:20:31,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:20:31,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:20:31,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:20:31,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:20:31,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:20:31,102 INFO L87 Difference]: Start difference. First operand 41310 states and 56221 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-12 23:20:32,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:20:32,787 INFO L93 Difference]: Finished difference Result 41316 states and 56226 transitions. [2021-11-12 23:20:32,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:20:32,787 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 237 [2021-11-12 23:20:32,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:20:32,972 INFO L225 Difference]: With dead ends: 41316 [2021-11-12 23:20:32,973 INFO L226 Difference]: Without dead ends: 41314 [2021-11-12 23:20:32,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 467 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:20:32,994 INFO L933 BasicCegarLoop]: 2620 mSDtfsCounter, 2548 mSDsluCounter, 5220 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2558 SdHoareTripleChecker+Valid, 7840 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.71ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.06ms IncrementalHoareTripleChecker+Time [2021-11-12 23:20:32,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2558 Valid, 7840 Invalid, 21 Unknown, 0 Unchecked, 16.71ms Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 62.06ms Time] [2021-11-12 23:20:33,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41314 states. [2021-11-12 23:20:35,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41314 to 41314. [2021-11-12 23:20:35,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41314 states, 28449 states have (on average 1.2568455833245458) internal successors, (35756), 29218 states have internal predecessors, (35756), 10201 states have call successors, (10201), 2710 states have call predecessors, (10201), 2661 states have return successors, (10267), 9895 states have call predecessors, (10267), 10197 states have call successors, (10267) [2021-11-12 23:20:35,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41314 states to 41314 states and 56224 transitions. [2021-11-12 23:20:35,534 INFO L78 Accepts]: Start accepts. Automaton has 41314 states and 56224 transitions. Word has length 237 [2021-11-12 23:20:35,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:20:35,536 INFO L470 AbstractCegarLoop]: Abstraction has 41314 states and 56224 transitions. [2021-11-12 23:20:35,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-12 23:20:35,536 INFO L276 IsEmpty]: Start isEmpty. Operand 41314 states and 56224 transitions. [2021-11-12 23:20:35,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-11-12 23:20:35,544 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:20:35,545 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 13, 13, 13, 13, 13, 13, 4, 4, 4, 4, 3, 3, 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] [2021-11-12 23:20:35,593 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-12 23:20:35,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:20:35,760 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)] === [2021-11-12 23:20:35,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:20:35,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1004229765, now seen corresponding path program 1 times [2021-11-12 23:20:35,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:20:35,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2050052525] [2021-11-12 23:20:35,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:20:35,764 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:20:35,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:20:35,765 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:20:35,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:20:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:20:38,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 1941 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:20:38,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:20:40,116 INFO L134 CoverageAnalysis]: Checked inductivity of 928 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 922 trivial. 0 not checked. [2021-11-12 23:20:40,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:20:40,944 INFO L134 CoverageAnalysis]: Checked inductivity of 928 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 922 trivial. 0 not checked. [2021-11-12 23:20:40,945 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:20:40,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2050052525] [2021-11-12 23:20:40,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2050052525] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:20:40,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:20:40,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 23:20:40,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192615638] [2021-11-12 23:20:40,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:20:40,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:20:40,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:20:40,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:20:40,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:20:40,948 INFO L87 Difference]: Start difference. First operand 41314 states and 56224 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-12 23:20:42,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:20:42,538 INFO L93 Difference]: Finished difference Result 41320 states and 56229 transitions. [2021-11-12 23:20:42,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:20:42,540 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 242 [2021-11-12 23:20:42,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:20:42,717 INFO L225 Difference]: With dead ends: 41320 [2021-11-12 23:20:42,717 INFO L226 Difference]: Without dead ends: 41318 [2021-11-12 23:20:42,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:20:42,736 INFO L933 BasicCegarLoop]: 2620 mSDtfsCounter, 2548 mSDsluCounter, 5220 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2557 SdHoareTripleChecker+Valid, 7840 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.94ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.41ms IncrementalHoareTripleChecker+Time [2021-11-12 23:20:42,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2557 Valid, 7840 Invalid, 21 Unknown, 0 Unchecked, 10.94ms Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 51.41ms Time] [2021-11-12 23:20:42,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41318 states. [2021-11-12 23:20:45,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41318 to 41318. [2021-11-12 23:20:45,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41318 states, 28452 states have (on average 1.2568185013355828) internal successors, (35759), 29221 states have internal predecessors, (35759), 10201 states have call successors, (10201), 2711 states have call predecessors, (10201), 2662 states have return successors, (10267), 9895 states have call predecessors, (10267), 10197 states have call successors, (10267) [2021-11-12 23:20:45,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41318 states to 41318 states and 56227 transitions. [2021-11-12 23:20:45,207 INFO L78 Accepts]: Start accepts. Automaton has 41318 states and 56227 transitions. Word has length 242 [2021-11-12 23:20:45,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:20:45,208 INFO L470 AbstractCegarLoop]: Abstraction has 41318 states and 56227 transitions. [2021-11-12 23:20:45,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-12 23:20:45,208 INFO L276 IsEmpty]: Start isEmpty. Operand 41318 states and 56227 transitions. [2021-11-12 23:20:45,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-11-12 23:20:45,216 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:20:45,217 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:20:45,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:20:45,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:20:45,440 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)] === [2021-11-12 23:20:45,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:20:45,441 INFO L85 PathProgramCache]: Analyzing trace with hash 205526547, now seen corresponding path program 1 times [2021-11-12 23:20:45,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:20:45,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [294499073] [2021-11-12 23:20:45,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:20:45,444 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:20:45,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:20:45,444 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:20:45,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:20:48,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:20:48,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 1995 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:20:48,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:20:48,824 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2021-11-12 23:20:48,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:20:49,421 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 940 trivial. 0 not checked. [2021-11-12 23:20:49,421 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:20:49,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [294499073] [2021-11-12 23:20:49,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [294499073] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:20:49,422 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:20:49,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:20:49,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911995591] [2021-11-12 23:20:49,422 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:20:49,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:20:49,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:20:49,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:20:49,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:20:49,424 INFO L87 Difference]: Start difference. First operand 41318 states and 56227 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 4 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (37), 4 states have call predecessors, (37), 4 states have call successors, (37) [2021-11-12 23:20:51,811 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:20:59,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:20:59,800 INFO L93 Difference]: Finished difference Result 122071 states and 166146 transitions. [2021-11-12 23:20:59,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:20:59,801 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 4 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (37), 4 states have call predecessors, (37), 4 states have call successors, (37) Word has length 258 [2021-11-12 23:20:59,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:21:00,379 INFO L225 Difference]: With dead ends: 122071 [2021-11-12 23:21:00,379 INFO L226 Difference]: Without dead ends: 81173 [2021-11-12 23:21:00,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:21:00,574 INFO L933 BasicCegarLoop]: 4718 mSDtfsCounter, 5055 mSDsluCounter, 4576 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5864.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5055 SdHoareTripleChecker+Valid, 9294 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.38ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6412.01ms IncrementalHoareTripleChecker+Time [2021-11-12 23:21:00,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5055 Valid, 9294 Invalid, 1040 Unknown, 0 Unchecked, 24.38ms Time], IncrementalHoareTripleChecker [12 Valid, 1027 Invalid, 1 Unknown, 0 Unchecked, 6412.01ms Time] [2021-11-12 23:21:00,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81173 states. [2021-11-12 23:21:05,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81173 to 81130. [2021-11-12 23:21:05,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81130 states, 55904 states have (on average 1.255205352032055) internal successors, (70171), 57371 states have internal predecessors, (70171), 19989 states have call successors, (19989), 5331 states have call predecessors, (19989), 5234 states have return successors, (20125), 19445 states have call predecessors, (20125), 19985 states have call successors, (20125) [2021-11-12 23:21:05,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81130 states to 81130 states and 110285 transitions. [2021-11-12 23:21:05,968 INFO L78 Accepts]: Start accepts. Automaton has 81130 states and 110285 transitions. Word has length 258 [2021-11-12 23:21:05,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:21:05,969 INFO L470 AbstractCegarLoop]: Abstraction has 81130 states and 110285 transitions. [2021-11-12 23:21:05,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 4 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (37), 4 states have call predecessors, (37), 4 states have call successors, (37) [2021-11-12 23:21:05,969 INFO L276 IsEmpty]: Start isEmpty. Operand 81130 states and 110285 transitions. [2021-11-12 23:21:05,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-11-12 23:21:05,980 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:21:05,981 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 4, 4, 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] [2021-11-12 23:21:06,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:21:06,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:21:06,201 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:21:06,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:21:06,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1366011290, now seen corresponding path program 1 times [2021-11-12 23:21:06,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:21:06,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1751995523] [2021-11-12 23:21:06,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:21:06,205 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:21:06,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:21:06,206 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:21:06,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02667086-d0f7-4eb2-bfa5-698db2d7be5d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 23:21:08,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:21:08,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 1996 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:21:08,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:21:09,383 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2021-11-12 23:21:09,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:21:09,873 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 940 trivial. 0 not checked. [2021-11-12 23:21:09,874 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:21:09,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1751995523] [2021-11-12 23:21:09,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1751995523] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:21:09,874 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:21:09,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:21:09,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113224241] [2021-11-12 23:21:09,874 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:21:09,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:21:09,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:21:09,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:21:09,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:21:09,876 INFO L87 Difference]: Start difference. First operand 81130 states and 110285 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 4 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (37), 4 states have call predecessors, (37), 4 states have call successors, (37) [2021-11-12 23:21:12,130 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []