./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-smsc-epic100.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_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/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_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/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-smsc-epic100.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/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_d4ae9f4c-743f-4f01-a860-bde61e442466/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 08a377ea5583d5b51d35b7880dbbb43c3783bcaabfa79c83938a2c0ac78e3f7a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:29:20,471 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:29:20,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:29:20,525 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:29:20,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:29:20,528 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:29:20,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:29:20,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:29:20,535 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:29:20,536 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:29:20,538 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:29:20,540 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:29:20,540 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:29:20,545 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:29:20,547 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:29:20,551 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:29:20,556 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:29:20,557 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:29:20,563 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:29:20,568 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:29:20,576 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:29:20,582 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:29:20,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:29:20,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:29:20,589 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:29:20,595 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:29:20,595 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:29:20,597 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:29:20,597 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:29:20,599 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:29:20,601 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:29:20,602 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:29:20,603 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:29:20,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:29:20,606 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:29:20,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:29:20,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:29:20,609 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:29:20,609 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:29:20,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:29:20,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:29:20,612 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-13 01:29:20,645 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:29:20,645 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:29:20,646 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:29:20,646 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:29:20,647 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:29:20,647 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:29:20,647 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:29:20,647 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 01:29:20,648 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:29:20,648 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:29:20,648 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 01:29:20,648 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 01:29:20,649 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:29:20,649 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 01:29:20,649 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 01:29:20,649 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 01:29:20,650 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:29:20,650 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 01:29:20,651 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:29:20,651 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:29:20,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:29:20,651 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:29:20,652 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:29:20,652 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:29:20,652 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:29:20,652 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:29:20,653 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:29:20,653 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:29:20,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:29:20,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:29:20,654 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:29:20,654 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:29:20,654 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 01:29:20,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 01:29:20,655 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:29:20,655 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:29:20,655 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:29:20,655 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_d4ae9f4c-743f-4f01-a860-bde61e442466/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08a377ea5583d5b51d35b7880dbbb43c3783bcaabfa79c83938a2c0ac78e3f7a [2021-11-13 01:29:20,891 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:29:20,923 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:29:20,925 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:29:20,927 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:29:20,927 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:29:20,928 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i [2021-11-13 01:29:21,024 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/data/b5e9c2a1c/edb2e5451b9c460280cb66bf024d2409/FLAGf9b4e06b8 [2021-11-13 01:29:21,972 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:29:21,972 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i [2021-11-13 01:29:22,026 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/data/b5e9c2a1c/edb2e5451b9c460280cb66bf024d2409/FLAGf9b4e06b8 [2021-11-13 01:29:22,352 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/data/b5e9c2a1c/edb2e5451b9c460280cb66bf024d2409 [2021-11-13 01:29:22,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:29:22,356 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:29:22,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:29:22,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:29:22,361 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:29:22,362 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:29:22" (1/1) ... [2021-11-13 01:29:22,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4312a555 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:22, skipping insertion in model container [2021-11-13 01:29:22,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:29:22" (1/1) ... [2021-11-13 01:29:22,371 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:29:22,571 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:29:24,432 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:29:24,458 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:29:24,460 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:29:25,538 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_d4ae9f4c-743f-4f01-a860-bde61e442466/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[331922,331935] [2021-11-13 01:29:25,541 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_d4ae9f4c-743f-4f01-a860-bde61e442466/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332091,332104] [2021-11-13 01:29:25,542 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_d4ae9f4c-743f-4f01-a860-bde61e442466/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332258,332271] [2021-11-13 01:29:25,543 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_d4ae9f4c-743f-4f01-a860-bde61e442466/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332426,332439] [2021-11-13 01:29:25,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:29:25,646 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) [2021-11-13 01:29:25,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@699e883 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:25, skipping insertion in model container [2021-11-13 01:29:25,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:29:25,647 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-13 01:29:25,649 INFO L158 Benchmark]: Toolchain (without parser) took 3292.39ms. Allocated memory was 94.4MB in the beginning and 119.5MB in the end (delta: 25.2MB). Free memory was 64.0MB in the beginning and 53.5MB in the end (delta: 10.4MB). Peak memory consumption was 55.7MB. Max. memory is 16.1GB. [2021-11-13 01:29:25,650 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 94.4MB. Free memory is still 75.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 01:29:25,651 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3289.87ms. Allocated memory was 94.4MB in the beginning and 119.5MB in the end (delta: 25.2MB). Free memory was 63.8MB in the beginning and 53.5MB in the end (delta: 10.2MB). Peak memory consumption was 55.7MB. Max. memory is 16.1GB. [2021-11-13 01:29:25,653 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 94.4MB. Free memory is still 75.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3289.87ms. Allocated memory was 94.4MB in the beginning and 119.5MB in the end (delta: 25.2MB). Free memory was 63.8MB in the beginning and 53.5MB in the end (delta: 10.2MB). Peak memory consumption was 55.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6363]: 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_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/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_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/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-smsc-epic100.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/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_d4ae9f4c-743f-4f01-a860-bde61e442466/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 08a377ea5583d5b51d35b7880dbbb43c3783bcaabfa79c83938a2c0ac78e3f7a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:29:27,957 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:29:27,961 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:29:28,017 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:29:28,017 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:29:28,022 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:29:28,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:29:28,029 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:29:28,033 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:29:28,041 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:29:28,043 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:29:28,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:29:28,046 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:29:28,048 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:29:28,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:29:28,055 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:29:28,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:29:28,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:29:28,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:29:28,068 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:29:28,071 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:29:28,072 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:29:28,075 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:29:28,077 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:29:28,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:29:28,087 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:29:28,087 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:29:28,089 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:29:28,090 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:29:28,091 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:29:28,092 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:29:28,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:29:28,095 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:29:28,096 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:29:28,098 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:29:28,098 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:29:28,099 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:29:28,099 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:29:28,100 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:29:28,102 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:29:28,102 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:29:28,104 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-13 01:29:28,151 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:29:28,151 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:29:28,153 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:29:28,153 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:29:28,154 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:29:28,154 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:29:28,154 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:29:28,154 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:29:28,155 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:29:28,155 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:29:28,157 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:29:28,158 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:29:28,158 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:29:28,158 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:29:28,158 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:29:28,159 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:29:28,159 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 01:29:28,159 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 01:29:28,159 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:29:28,160 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:29:28,160 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:29:28,160 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:29:28,160 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 01:29:28,161 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:29:28,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:29:28,161 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:29:28,161 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:29:28,162 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:29:28,162 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 01:29:28,162 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 01:29:28,162 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:29:28,162 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:29:28,163 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:29:28,163 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_d4ae9f4c-743f-4f01-a860-bde61e442466/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08a377ea5583d5b51d35b7880dbbb43c3783bcaabfa79c83938a2c0ac78e3f7a [2021-11-13 01:29:28,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:29:28,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:29:28,645 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:29:28,647 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:29:28,648 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:29:28,649 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i [2021-11-13 01:29:28,720 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/data/5513768f2/06b293bdba8e4696a8c59dc94ea53a4e/FLAGd8b05a2fb [2021-11-13 01:29:29,699 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:29:29,700 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i [2021-11-13 01:29:29,769 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/data/5513768f2/06b293bdba8e4696a8c59dc94ea53a4e/FLAGd8b05a2fb [2021-11-13 01:29:30,095 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/data/5513768f2/06b293bdba8e4696a8c59dc94ea53a4e [2021-11-13 01:29:30,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:29:30,100 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:29:30,103 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:29:30,103 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:29:30,108 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:29:30,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:29:30" (1/1) ... [2021-11-13 01:29:30,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54cbf074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:30, skipping insertion in model container [2021-11-13 01:29:30,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:29:30" (1/1) ... [2021-11-13 01:29:30,117 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:29:30,380 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:29:33,478 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_d4ae9f4c-743f-4f01-a860-bde61e442466/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[331922,331935] [2021-11-13 01:29:33,480 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_d4ae9f4c-743f-4f01-a860-bde61e442466/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332091,332104] [2021-11-13 01:29:33,481 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_d4ae9f4c-743f-4f01-a860-bde61e442466/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332258,332271] [2021-11-13 01:29:33,482 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_d4ae9f4c-743f-4f01-a860-bde61e442466/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332426,332439] [2021-11-13 01:29:33,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:29:33,601 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 01:29:33,666 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:29:33,993 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_d4ae9f4c-743f-4f01-a860-bde61e442466/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[331922,331935] [2021-11-13 01:29:33,993 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_d4ae9f4c-743f-4f01-a860-bde61e442466/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332091,332104] [2021-11-13 01:29:33,994 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_d4ae9f4c-743f-4f01-a860-bde61e442466/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332258,332271] [2021-11-13 01:29:33,994 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_d4ae9f4c-743f-4f01-a860-bde61e442466/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332426,332439] [2021-11-13 01:29:34,001 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:29:34,065 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 01:29:34,449 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_d4ae9f4c-743f-4f01-a860-bde61e442466/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[331922,331935] [2021-11-13 01:29:34,450 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_d4ae9f4c-743f-4f01-a860-bde61e442466/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332091,332104] [2021-11-13 01:29:34,451 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_d4ae9f4c-743f-4f01-a860-bde61e442466/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332258,332271] [2021-11-13 01:29:34,451 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_d4ae9f4c-743f-4f01-a860-bde61e442466/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332426,332439] [2021-11-13 01:29:34,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:29:34,741 INFO L208 MainTranslator]: Completed translation [2021-11-13 01:29:34,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:34 WrapperNode [2021-11-13 01:29:34,746 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:29:34,747 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 01:29:34,747 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 01:29:34,747 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 01:29:34,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:34" (1/1) ... [2021-11-13 01:29:34,899 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:34" (1/1) ... [2021-11-13 01:29:35,128 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 01:29:35,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 01:29:35,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 01:29:35,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 01:29:35,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:34" (1/1) ... [2021-11-13 01:29:35,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:34" (1/1) ... [2021-11-13 01:29:35,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:34" (1/1) ... [2021-11-13 01:29:35,171 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:34" (1/1) ... [2021-11-13 01:29:35,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:34" (1/1) ... [2021-11-13 01:29:35,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:34" (1/1) ... [2021-11-13 01:29:35,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:34" (1/1) ... [2021-11-13 01:29:35,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 01:29:35,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 01:29:35,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 01:29:35,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 01:29:35,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:34" (1/1) ... [2021-11-13 01:29:35,410 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:29:35,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:29:35,436 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 01:29:35,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 01:29:35,546 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2021-11-13 01:29:35,547 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2021-11-13 01:29:35,547 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-13 01:29:35,547 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-13 01:29:35,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-13 01:29:35,547 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-13 01:29:35,547 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_begin [2021-11-13 01:29:35,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_begin [2021-11-13 01:29:35,547 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-13 01:29:35,548 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-13 01:29:35,548 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-13 01:29:35,548 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-13 01:29:35,548 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 01:29:35,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 01:29:35,548 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-13 01:29:35,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-13 01:29:35,548 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-13 01:29:35,549 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-13 01:29:35,549 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-13 01:29:35,549 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-13 01:29:35,549 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-11-13 01:29:35,549 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-11-13 01:29:35,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_73 [2021-11-13 01:29:35,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_73 [2021-11-13 01:29:35,549 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-13 01:29:35,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-13 01:29:35,550 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-13 01:29:35,550 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-13 01:29:35,550 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-13 01:29:35,550 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-13 01:29:35,550 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-13 01:29:35,550 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-13 01:29:35,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-13 01:29:35,551 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-13 01:29:35,551 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-13 01:29:35,551 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-13 01:29:35,551 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-13 01:29:35,551 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-13 01:29:35,551 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-13 01:29:35,551 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-13 01:29:35,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-13 01:29:35,552 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-13 01:29:35,553 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-13 01:29:35,553 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-13 01:29:35,553 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-13 01:29:35,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 01:29:35,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-13 01:29:35,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 01:29:35,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-13 01:29:35,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-13 01:29:35,561 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-13 01:29:35,561 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-13 01:29:35,561 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-13 01:29:35,561 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-13 01:29:35,561 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-13 01:29:35,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-13 01:29:35,562 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-13 01:29:35,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-13 01:29:35,562 INFO L130 BoogieDeclarations]: Found specification of procedure epic_open [2021-11-13 01:29:35,562 INFO L138 BoogieDeclarations]: Found implementation of procedure epic_open [2021-11-13 01:29:35,563 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2021-11-13 01:29:35,563 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2021-11-13 01:29:35,563 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-13 01:29:35,563 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-13 01:29:35,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-13 01:29:35,564 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-13 01:29:35,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-13 01:29:35,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-13 01:29:35,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-13 01:29:35,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-13 01:29:35,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-13 01:29:35,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-13 01:29:35,565 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-13 01:29:35,565 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-13 01:29:35,565 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-13 01:29:35,565 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-13 01:29:35,565 INFO L130 BoogieDeclarations]: Found specification of procedure epic_restart [2021-11-13 01:29:35,566 INFO L138 BoogieDeclarations]: Found implementation of procedure epic_restart [2021-11-13 01:29:35,566 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_epic_cleanup_14_2 [2021-11-13 01:29:35,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_epic_cleanup_14_2 [2021-11-13 01:29:35,566 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-13 01:29:35,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-13 01:29:35,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 01:29:35,567 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-13 01:29:35,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-13 01:29:35,567 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-13 01:29:35,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-13 01:29:35,568 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_nway_reset [2021-11-13 01:29:35,568 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_nway_reset [2021-11-13 01:29:35,568 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-13 01:29:35,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-13 01:29:35,568 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-13 01:29:35,568 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-13 01:29:35,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 01:29:35,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-13 01:29:35,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-13 01:29:35,569 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-11-13 01:29:35,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-11-13 01:29:35,569 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 01:29:35,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 01:29:35,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-13 01:29:35,570 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_epic_private [2021-11-13 01:29:35,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_epic_private [2021-11-13 01:29:35,570 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2021-11-13 01:29:35,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2021-11-13 01:29:35,571 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-13 01:29:35,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-13 01:29:35,571 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2021-11-13 01:29:35,571 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2021-11-13 01:29:35,571 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-13 01:29:35,572 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-13 01:29:35,572 INFO L130 BoogieDeclarations]: Found specification of procedure epic_remove_one [2021-11-13 01:29:35,572 INFO L138 BoogieDeclarations]: Found implementation of procedure epic_remove_one [2021-11-13 01:29:35,573 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-13 01:29:35,573 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-13 01:29:35,573 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-13 01:29:35,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-13 01:29:35,584 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_napi_lock_of_epic_private [2021-11-13 01:29:35,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_napi_lock_of_epic_private [2021-11-13 01:29:35,584 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-13 01:29:35,584 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-13 01:29:35,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-13 01:29:35,585 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-11-13 01:29:35,585 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-11-13 01:29:35,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 01:29:35,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 01:29:35,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 01:29:35,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-13 01:29:35,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 01:29:35,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 01:29:35,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-13 01:29:35,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 01:29:35,586 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 01:29:35,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 01:29:35,587 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-13 01:29:35,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-13 01:29:35,587 INFO L130 BoogieDeclarations]: Found specification of procedure epic_rx [2021-11-13 01:29:35,587 INFO L138 BoogieDeclarations]: Found implementation of procedure epic_rx [2021-11-13 01:29:35,587 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_complete [2021-11-13 01:29:35,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_complete [2021-11-13 01:29:35,588 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-13 01:29:35,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-13 01:29:35,588 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_napi_lock_of_epic_private [2021-11-13 01:29:35,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_napi_lock_of_epic_private [2021-11-13 01:29:35,588 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-13 01:29:35,589 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-13 01:29:35,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 01:29:35,589 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 01:29:35,589 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-13 01:29:35,589 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-13 01:29:35,589 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-13 01:29:35,590 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-13 01:29:35,590 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-13 01:29:35,590 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-13 01:29:35,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 01:29:35,590 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_72 [2021-11-13 01:29:35,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_72 [2021-11-13 01:29:35,591 INFO L130 BoogieDeclarations]: Found specification of procedure epic_resume [2021-11-13 01:29:35,591 INFO L138 BoogieDeclarations]: Found implementation of procedure epic_resume [2021-11-13 01:29:35,591 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-13 01:29:35,591 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-13 01:29:35,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 01:29:35,591 INFO L130 BoogieDeclarations]: Found specification of procedure epic_tx_timeout [2021-11-13 01:29:35,592 INFO L138 BoogieDeclarations]: Found implementation of procedure epic_tx_timeout [2021-11-13 01:29:35,592 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-13 01:29:35,592 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-13 01:29:35,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-13 01:29:35,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 01:29:35,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-13 01:29:35,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 01:29:35,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 01:29:35,593 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~TO~VOID [2021-11-13 01:29:35,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~TO~VOID [2021-11-13 01:29:35,593 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-13 01:29:35,594 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-13 01:29:35,594 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-13 01:29:35,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-13 01:29:35,594 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-13 01:29:35,594 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-13 01:29:35,594 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-13 01:29:35,595 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-13 01:29:35,595 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-13 01:29:35,595 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-13 01:29:35,595 INFO L130 BoogieDeclarations]: Found specification of procedure epic_close [2021-11-13 01:29:35,595 INFO L138 BoogieDeclarations]: Found implementation of procedure epic_close [2021-11-13 01:29:35,595 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-13 01:29:35,603 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-13 01:29:35,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-13 01:29:35,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-13 01:29:35,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-13 01:29:35,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-13 01:29:35,604 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 01:29:35,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 01:29:35,604 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-13 01:29:35,604 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-13 01:29:35,604 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_epic_private [2021-11-13 01:29:35,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_epic_private [2021-11-13 01:29:35,605 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-13 01:29:35,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-13 01:29:35,605 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-13 01:29:35,605 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-13 01:29:35,606 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-13 01:29:35,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-13 01:29:35,606 INFO L130 BoogieDeclarations]: Found specification of procedure epic_pause [2021-11-13 01:29:35,606 INFO L138 BoogieDeclarations]: Found implementation of procedure epic_pause [2021-11-13 01:29:45,770 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 01:30:17,985 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-13 01:30:18,162 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 01:30:18,162 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 01:30:18,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:30:18 BoogieIcfgContainer [2021-11-13 01:30:18,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 01:30:18,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 01:30:18,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 01:30:18,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 01:30:18,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:29:30" (1/3) ... [2021-11-13 01:30:18,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a40366e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:30:18, skipping insertion in model container [2021-11-13 01:30:18,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:34" (2/3) ... [2021-11-13 01:30:18,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a40366e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:30:18, skipping insertion in model container [2021-11-13 01:30:18,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:30:18" (3/3) ... [2021-11-13 01:30:18,176 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i [2021-11-13 01:30:18,181 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 01:30:18,182 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-13 01:30:18,264 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 01:30:18,273 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 [2021-11-13 01:30:18,273 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-13 01:30:18,328 INFO L276 IsEmpty]: Start isEmpty. Operand has 1658 states, 1128 states have (on average 1.2695035460992907) internal successors, (1432), 1162 states have internal predecessors, (1432), 441 states have call successors, (441), 87 states have call predecessors, (441), 86 states have return successors, (435), 430 states have call predecessors, (435), 435 states have call successors, (435) [2021-11-13 01:30:18,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-13 01:30:18,347 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:18,348 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:30:18,348 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)] === [2021-11-13 01:30:18,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:18,353 INFO L85 PathProgramCache]: Analyzing trace with hash 289463430, now seen corresponding path program 1 times [2021-11-13 01:30:18,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:30:18,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1087631653] [2021-11-13 01:30:18,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:18,373 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:30:18,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:30:18,378 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:30:18,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 01:30:21,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:21,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 1593 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:30:21,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:30:21,774 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-11-13 01:30:21,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:30:22,158 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2021-11-13 01:30:22,159 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:30:22,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1087631653] [2021-11-13 01:30:22,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1087631653] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:22,160 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:22,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 01:30:22,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018560457] [2021-11-13 01:30:22,163 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:22,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:30:22,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:30:22,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:30:22,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:30:22,243 INFO L87 Difference]: Start difference. First operand has 1658 states, 1128 states have (on average 1.2695035460992907) internal successors, (1432), 1162 states have internal predecessors, (1432), 441 states have call successors, (441), 87 states have call predecessors, (441), 86 states have return successors, (435), 430 states have call predecessors, (435), 435 states have call successors, (435) Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-13 01:30:24,505 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 [] [2021-11-13 01:30:30,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:30,903 INFO L93 Difference]: Finished difference Result 6404 states and 9063 transitions. [2021-11-13 01:30:30,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:30:30,905 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 127 [2021-11-13 01:30:30,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:30,987 INFO L225 Difference]: With dead ends: 6404 [2021-11-13 01:30:30,988 INFO L226 Difference]: Without dead ends: 4752 [2021-11-13 01:30:31,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:30:31,017 INFO L933 BasicCegarLoop]: 3124 mSDtfsCounter, 5741 mSDsluCounter, 3552 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 817 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7227.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5741 SdHoareTripleChecker+Valid, 6676 SdHoareTripleChecker+Invalid, 1718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 61.86ms SdHoareTripleChecker+Time, 817 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8091.39ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:31,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5741 Valid, 6676 Invalid, 1718 Unknown, 0 Unchecked, 61.86ms Time], IncrementalHoareTripleChecker [817 Valid, 900 Invalid, 1 Unknown, 0 Unchecked, 8091.39ms Time] [2021-11-13 01:30:31,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4752 states. [2021-11-13 01:30:31,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4752 to 4725. [2021-11-13 01:30:31,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4725 states, 3250 states have (on average 1.2633846153846153) internal successors, (4106), 3348 states have internal predecessors, (4106), 1221 states have call successors, (1221), 252 states have call predecessors, (1221), 251 states have return successors, (1217), 1202 states have call predecessors, (1217), 1217 states have call successors, (1217) [2021-11-13 01:30:31,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4725 states to 4725 states and 6544 transitions. [2021-11-13 01:30:31,592 INFO L78 Accepts]: Start accepts. Automaton has 4725 states and 6544 transitions. Word has length 127 [2021-11-13 01:30:31,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:31,594 INFO L470 AbstractCegarLoop]: Abstraction has 4725 states and 6544 transitions. [2021-11-13 01:30:31,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-13 01:30:31,595 INFO L276 IsEmpty]: Start isEmpty. Operand 4725 states and 6544 transitions. [2021-11-13 01:30:31,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-13 01:30:31,609 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:31,610 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:30:31,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 01:30:31,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:30:31,824 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)] === [2021-11-13 01:30:31,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:31,825 INFO L85 PathProgramCache]: Analyzing trace with hash -693776646, now seen corresponding path program 1 times [2021-11-13 01:30:31,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:30:31,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [353475823] [2021-11-13 01:30:31,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:31,828 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:30:31,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:30:31,831 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:30:31,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 01:30:34,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:34,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 1633 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:30:34,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:30:35,165 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-11-13 01:30:35,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:30:35,552 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2021-11-13 01:30:35,553 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:30:35,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [353475823] [2021-11-13 01:30:35,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [353475823] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:35,553 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:35,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 01:30:35,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253599134] [2021-11-13 01:30:35,554 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:35,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:30:35,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:30:35,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:30:35,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:30:35,557 INFO L87 Difference]: Start difference. First operand 4725 states and 6544 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-13 01:30:37,815 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 [] [2021-11-13 01:30:38,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:38,568 INFO L93 Difference]: Finished difference Result 13337 states and 18488 transitions. [2021-11-13 01:30:38,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:30:38,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 136 [2021-11-13 01:30:38,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:38,646 INFO L225 Difference]: With dead ends: 13337 [2021-11-13 01:30:38,646 INFO L226 Difference]: Without dead ends: 8635 [2021-11-13 01:30:38,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:30:38,672 INFO L933 BasicCegarLoop]: 2655 mSDtfsCounter, 1886 mSDsluCounter, 2191 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2439.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1886 SdHoareTripleChecker+Valid, 4846 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.76ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2521.15ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:38,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1886 Valid, 4846 Invalid, 74 Unknown, 0 Unchecked, 16.76ms Time], IncrementalHoareTripleChecker [7 Valid, 66 Invalid, 1 Unknown, 0 Unchecked, 2521.15ms Time] [2021-11-13 01:30:38,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8635 states. [2021-11-13 01:30:39,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8635 to 8603. [2021-11-13 01:30:39,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8603 states, 5883 states have (on average 1.263810980792113) internal successors, (7435), 6071 states have internal predecessors, (7435), 2243 states have call successors, (2243), 478 states have call predecessors, (2243), 474 states have return successors, (2242), 2197 states have call predecessors, (2242), 2239 states have call successors, (2242) [2021-11-13 01:30:39,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8603 states to 8603 states and 11920 transitions. [2021-11-13 01:30:39,238 INFO L78 Accepts]: Start accepts. Automaton has 8603 states and 11920 transitions. Word has length 136 [2021-11-13 01:30:39,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:39,313 INFO L470 AbstractCegarLoop]: Abstraction has 8603 states and 11920 transitions. [2021-11-13 01:30:39,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-13 01:30:39,314 INFO L276 IsEmpty]: Start isEmpty. Operand 8603 states and 11920 transitions. [2021-11-13 01:30:39,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-13 01:30:39,317 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:39,318 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:30:39,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 01:30:39,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:30:39,527 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)] === [2021-11-13 01:30:39,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:39,528 INFO L85 PathProgramCache]: Analyzing trace with hash 2065689087, now seen corresponding path program 1 times [2021-11-13 01:30:39,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:30:39,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [284756322] [2021-11-13 01:30:39,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:39,531 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:30:39,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:30:39,534 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:30:39,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 01:30:42,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:42,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 1668 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:30:42,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:30:43,030 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-11-13 01:30:43,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:30:43,418 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2021-11-13 01:30:43,418 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:30:43,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [284756322] [2021-11-13 01:30:43,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [284756322] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:43,419 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:43,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 01:30:43,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662821511] [2021-11-13 01:30:43,420 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:43,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:30:43,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:30:43,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:30:43,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:30:43,422 INFO L87 Difference]: Start difference. First operand 8603 states and 11920 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 4 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-11-13 01:30:45,696 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 [] [2021-11-13 01:30:52,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:52,287 INFO L93 Difference]: Finished difference Result 32747 states and 45364 transitions. [2021-11-13 01:30:52,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:30:52,289 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 4 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 142 [2021-11-13 01:30:52,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:52,501 INFO L225 Difference]: With dead ends: 32747 [2021-11-13 01:30:52,504 INFO L226 Difference]: Without dead ends: 24167 [2021-11-13 01:30:52,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:30:52,561 INFO L933 BasicCegarLoop]: 3210 mSDtfsCounter, 5476 mSDsluCounter, 3453 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 814 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6989.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5476 SdHoareTripleChecker+Valid, 6663 SdHoareTripleChecker+Invalid, 1623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 44.17ms SdHoareTripleChecker+Time, 814 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7751.46ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:52,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5476 Valid, 6663 Invalid, 1623 Unknown, 0 Unchecked, 44.17ms Time], IncrementalHoareTripleChecker [814 Valid, 808 Invalid, 1 Unknown, 0 Unchecked, 7751.46ms Time] [2021-11-13 01:30:52,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24167 states. [2021-11-13 01:30:54,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24167 to 24091. [2021-11-13 01:30:54,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24091 states, 16505 states have (on average 1.2637988488336869) internal successors, (20859), 17035 states have internal predecessors, (20859), 6229 states have call successors, (6229), 1382 states have call predecessors, (6229), 1354 states have return successors, (6264), 6045 states have call predecessors, (6264), 6225 states have call successors, (6264) [2021-11-13 01:30:54,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24091 states to 24091 states and 33352 transitions. [2021-11-13 01:30:54,226 INFO L78 Accepts]: Start accepts. Automaton has 24091 states and 33352 transitions. Word has length 142 [2021-11-13 01:30:54,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:54,227 INFO L470 AbstractCegarLoop]: Abstraction has 24091 states and 33352 transitions. [2021-11-13 01:30:54,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 4 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-11-13 01:30:54,228 INFO L276 IsEmpty]: Start isEmpty. Operand 24091 states and 33352 transitions. [2021-11-13 01:30:54,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-13 01:30:54,236 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:54,237 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 9, 9, 9, 9, 9, 9, 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] [2021-11-13 01:30:54,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 01:30:54,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:30:54,460 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-13 01:30:54,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:54,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1703595742, now seen corresponding path program 1 times [2021-11-13 01:30:54,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:30:54,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1070703380] [2021-11-13 01:30:54,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:54,463 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:30:54,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:30:54,464 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:30:54,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 01:30:57,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:57,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 1718 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:30:57,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:30:58,312 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2021-11-13 01:30:58,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:30:59,128 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2021-11-13 01:30:59,129 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:30:59,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1070703380] [2021-11-13 01:30:59,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1070703380] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:59,129 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:59,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 7 [2021-11-13 01:30:59,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063046787] [2021-11-13 01:30:59,129 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:59,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 01:30:59,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:30:59,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 01:30:59,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:30:59,131 INFO L87 Difference]: Start difference. First operand 24091 states and 33352 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (39), 4 states have call predecessors, (39), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-13 01:31:00,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:00,117 INFO L93 Difference]: Finished difference Result 24097 states and 33357 transitions. [2021-11-13 01:31:00,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 01:31:00,118 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (39), 4 states have call predecessors, (39), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 183 [2021-11-13 01:31:00,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:00,236 INFO L225 Difference]: With dead ends: 24097 [2021-11-13 01:31:00,236 INFO L226 Difference]: Without dead ends: 24095 [2021-11-13 01:31:00,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-13 01:31:00,253 INFO L933 BasicCegarLoop]: 2274 mSDtfsCounter, 2189 mSDsluCounter, 6807 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2201 SdHoareTripleChecker+Valid, 9081 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.76ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.14ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:00,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2201 Valid, 9081 Invalid, 25 Unknown, 0 Unchecked, 22.76ms Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 62.14ms Time] [2021-11-13 01:31:00,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24095 states. [2021-11-13 01:31:01,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24095 to 24095. [2021-11-13 01:31:01,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24095 states, 16508 states have (on average 1.2637509086503513) internal successors, (20862), 17038 states have internal predecessors, (20862), 6229 states have call successors, (6229), 1383 states have call predecessors, (6229), 1355 states have return successors, (6264), 6045 states have call predecessors, (6264), 6225 states have call successors, (6264) [2021-11-13 01:31:01,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24095 states to 24095 states and 33355 transitions. [2021-11-13 01:31:01,908 INFO L78 Accepts]: Start accepts. Automaton has 24095 states and 33355 transitions. Word has length 183 [2021-11-13 01:31:01,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:01,909 INFO L470 AbstractCegarLoop]: Abstraction has 24095 states and 33355 transitions. [2021-11-13 01:31:01,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (39), 4 states have call predecessors, (39), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-13 01:31:01,910 INFO L276 IsEmpty]: Start isEmpty. Operand 24095 states and 33355 transitions. [2021-11-13 01:31:01,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-13 01:31:01,917 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:01,918 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 9, 9, 9, 9, 9, 9, 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] [2021-11-13 01:31:01,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:02,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:02,132 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)] === [2021-11-13 01:31:02,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:02,133 INFO L85 PathProgramCache]: Analyzing trace with hash 709873131, now seen corresponding path program 1 times [2021-11-13 01:31:02,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:02,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1130077964] [2021-11-13 01:31:02,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:02,136 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:02,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:02,140 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:02,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 01:31:04,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:05,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 1725 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:31:05,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:06,067 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2021-11-13 01:31:06,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:06,771 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2021-11-13 01:31:06,771 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:06,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1130077964] [2021-11-13 01:31:06,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1130077964] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:31:06,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:31:06,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-13 01:31:06,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954103355] [2021-11-13 01:31:06,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:06,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:31:06,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:06,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:31:06,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:31:06,774 INFO L87 Difference]: Start difference. First operand 24095 states and 33355 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-13 01:31:07,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:07,821 INFO L93 Difference]: Finished difference Result 24101 states and 33360 transitions. [2021-11-13 01:31:07,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 01:31:07,822 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 188 [2021-11-13 01:31:07,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:07,934 INFO L225 Difference]: With dead ends: 24101 [2021-11-13 01:31:07,934 INFO L226 Difference]: Without dead ends: 24099 [2021-11-13 01:31:07,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-13 01:31:07,947 INFO L933 BasicCegarLoop]: 2277 mSDtfsCounter, 2213 mSDsluCounter, 4534 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2224 SdHoareTripleChecker+Valid, 6811 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.73ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.15ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:07,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2224 Valid, 6811 Invalid, 21 Unknown, 0 Unchecked, 16.73ms Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 59.15ms Time] [2021-11-13 01:31:07,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24099 states. [2021-11-13 01:31:09,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24099 to 24099. [2021-11-13 01:31:09,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24099 states, 16511 states have (on average 1.2637029858881959) internal successors, (20865), 17041 states have internal predecessors, (20865), 6229 states have call successors, (6229), 1384 states have call predecessors, (6229), 1356 states have return successors, (6264), 6045 states have call predecessors, (6264), 6225 states have call successors, (6264) [2021-11-13 01:31:09,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24099 states to 24099 states and 33358 transitions. [2021-11-13 01:31:09,521 INFO L78 Accepts]: Start accepts. Automaton has 24099 states and 33358 transitions. Word has length 188 [2021-11-13 01:31:09,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:09,522 INFO L470 AbstractCegarLoop]: Abstraction has 24099 states and 33358 transitions. [2021-11-13 01:31:09,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-13 01:31:09,523 INFO L276 IsEmpty]: Start isEmpty. Operand 24099 states and 33358 transitions. [2021-11-13 01:31:09,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-13 01:31:09,531 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:09,531 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 9, 9, 9, 9, 9, 9, 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] [2021-11-13 01:31:09,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:09,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:09,744 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)] === [2021-11-13 01:31:09,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:09,745 INFO L85 PathProgramCache]: Analyzing trace with hash -36577662, now seen corresponding path program 1 times [2021-11-13 01:31:09,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:09,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [542172006] [2021-11-13 01:31:09,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:09,748 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:09,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:09,751 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:09,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 01:31:12,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:12,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 1732 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:31:12,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:13,597 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked. [2021-11-13 01:31:13,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:14,376 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked. [2021-11-13 01:31:14,376 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:14,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [542172006] [2021-11-13 01:31:14,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [542172006] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:31:14,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:31:14,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-13 01:31:14,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490601919] [2021-11-13 01:31:14,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:14,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:31:14,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:14,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:31:14,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:31:14,378 INFO L87 Difference]: Start difference. First operand 24099 states and 33358 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-13 01:31:15,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:15,522 INFO L93 Difference]: Finished difference Result 24105 states and 33363 transitions. [2021-11-13 01:31:15,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 01:31:15,523 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 193 [2021-11-13 01:31:15,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:15,634 INFO L225 Difference]: With dead ends: 24105 [2021-11-13 01:31:15,635 INFO L226 Difference]: Without dead ends: 24103 [2021-11-13 01:31:15,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-13 01:31:15,649 INFO L933 BasicCegarLoop]: 2277 mSDtfsCounter, 2213 mSDsluCounter, 4534 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2223 SdHoareTripleChecker+Valid, 6811 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.34ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.75ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:15,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2223 Valid, 6811 Invalid, 21 Unknown, 0 Unchecked, 19.34ms Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 60.75ms Time] [2021-11-13 01:31:15,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24103 states. [2021-11-13 01:31:17,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24103 to 24103. [2021-11-13 01:31:17,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24103 states, 16514 states have (on average 1.2636550805377256) internal successors, (20868), 17044 states have internal predecessors, (20868), 6229 states have call successors, (6229), 1385 states have call predecessors, (6229), 1357 states have return successors, (6264), 6045 states have call predecessors, (6264), 6225 states have call successors, (6264) [2021-11-13 01:31:17,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24103 states to 24103 states and 33361 transitions. [2021-11-13 01:31:17,266 INFO L78 Accepts]: Start accepts. Automaton has 24103 states and 33361 transitions. Word has length 193 [2021-11-13 01:31:17,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:17,267 INFO L470 AbstractCegarLoop]: Abstraction has 24103 states and 33361 transitions. [2021-11-13 01:31:17,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-13 01:31:17,267 INFO L276 IsEmpty]: Start isEmpty. Operand 24103 states and 33361 transitions. [2021-11-13 01:31:17,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-11-13 01:31:17,276 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:17,277 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 9, 9, 9, 9, 9, 9, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:31:17,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:17,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:17,500 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)] === [2021-11-13 01:31:17,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:17,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1574984823, now seen corresponding path program 1 times [2021-11-13 01:31:17,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:17,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1735431877] [2021-11-13 01:31:17,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:17,504 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:17,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:17,505 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:17,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 01:31:20,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:20,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 1786 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:31:20,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:20,628 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked. [2021-11-13 01:31:20,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:21,013 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2021-11-13 01:31:21,013 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:21,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1735431877] [2021-11-13 01:31:21,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1735431877] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:31:21,013 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:31:21,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 01:31:21,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377663333] [2021-11-13 01:31:21,014 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:21,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:31:21,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:21,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:31:21,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:31:21,015 INFO L87 Difference]: Start difference. First operand 24103 states and 33361 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 4 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2021-11-13 01:31:23,207 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 [] [2021-11-13 01:31:29,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:29,453 INFO L93 Difference]: Finished difference Result 56232 states and 77786 transitions. [2021-11-13 01:31:29,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:31:29,454 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 4 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) Word has length 209 [2021-11-13 01:31:29,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:29,722 INFO L225 Difference]: With dead ends: 56232 [2021-11-13 01:31:29,723 INFO L226 Difference]: Without dead ends: 39988 [2021-11-13 01:31:29,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:31:29,805 INFO L933 BasicCegarLoop]: 4796 mSDtfsCounter, 4384 mSDsluCounter, 3561 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 408 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5833.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4384 SdHoareTripleChecker+Valid, 8357 SdHoareTripleChecker+Invalid, 1302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.31ms SdHoareTripleChecker+Time, 408 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6433.47ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:29,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4384 Valid, 8357 Invalid, 1302 Unknown, 0 Unchecked, 26.31ms Time], IncrementalHoareTripleChecker [408 Valid, 893 Invalid, 1 Unknown, 0 Unchecked, 6433.47ms Time] [2021-11-13 01:31:29,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39988 states. [2021-11-13 01:31:32,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39988 to 39949. [2021-11-13 01:31:32,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39949 states, 27382 states have (on average 1.2625812577605726) internal successors, (34572), 28252 states have internal predecessors, (34572), 10303 states have call successors, (10303), 2307 states have call predecessors, (10303), 2261 states have return successors, (10364), 10009 states have call predecessors, (10364), 10299 states have call successors, (10364) [2021-11-13 01:31:32,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39949 states to 39949 states and 55239 transitions. [2021-11-13 01:31:32,593 INFO L78 Accepts]: Start accepts. Automaton has 39949 states and 55239 transitions. Word has length 209 [2021-11-13 01:31:32,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:32,594 INFO L470 AbstractCegarLoop]: Abstraction has 39949 states and 55239 transitions. [2021-11-13 01:31:32,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 4 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2021-11-13 01:31:32,594 INFO L276 IsEmpty]: Start isEmpty. Operand 39949 states and 55239 transitions. [2021-11-13 01:31:32,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-13 01:31:32,604 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:32,605 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 9, 9, 9, 9, 9, 9, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:31:32,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:32,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:32,820 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)] === [2021-11-13 01:31:32,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:32,821 INFO L85 PathProgramCache]: Analyzing trace with hash -821883747, now seen corresponding path program 1 times [2021-11-13 01:31:32,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:32,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [71590668] [2021-11-13 01:31:32,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:32,824 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:32,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:32,828 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:32,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 01:31:35,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:35,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 1787 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:31:35,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:35,916 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked. [2021-11-13 01:31:35,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:36,332 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2021-11-13 01:31:36,332 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:36,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [71590668] [2021-11-13 01:31:36,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [71590668] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:31:36,332 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:31:36,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 01:31:36,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577620630] [2021-11-13 01:31:36,332 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:36,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:31:36,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:36,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:31:36,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:31:36,334 INFO L87 Difference]: Start difference. First operand 39949 states and 55239 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 4 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2021-11-13 01:31:38,540 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:31:45,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:45,293 INFO L93 Difference]: Finished difference Result 79993 states and 110570 transitions. [2021-11-13 01:31:45,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:31:45,294 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 4 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) Word has length 210 [2021-11-13 01:31:45,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:45,514 INFO L225 Difference]: With dead ends: 79993 [2021-11-13 01:31:45,514 INFO L226 Difference]: Without dead ends: 47903 [2021-11-13 01:31:45,846 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 [2021-11-13 01:31:45,847 INFO L933 BasicCegarLoop]: 4837 mSDtfsCounter, 4380 mSDsluCounter, 4067 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5623.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4380 SdHoareTripleChecker+Valid, 8904 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.75ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6127.50ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:45,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4380 Valid, 8904 Invalid, 891 Unknown, 0 Unchecked, 27.75ms Time], IncrementalHoareTripleChecker [10 Valid, 880 Invalid, 1 Unknown, 0 Unchecked, 6127.50ms Time] [2021-11-13 01:31:45,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47903 states. [2021-11-13 01:31:48,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47903 to 47833. [2021-11-13 01:31:48,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47833 states, 32783 states have (on average 1.2617515175548302) internal successors, (41364), 33823 states have internal predecessors, (41364), 12337 states have call successors, (12337), 2765 states have call predecessors, (12337), 2710 states have return successors, (12411), 11988 states have call predecessors, (12411), 12333 states have call successors, (12411) [2021-11-13 01:31:49,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47833 states to 47833 states and 66112 transitions. [2021-11-13 01:31:49,165 INFO L78 Accepts]: Start accepts. Automaton has 47833 states and 66112 transitions. Word has length 210 [2021-11-13 01:31:49,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:49,166 INFO L470 AbstractCegarLoop]: Abstraction has 47833 states and 66112 transitions. [2021-11-13 01:31:49,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 4 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2021-11-13 01:31:49,166 INFO L276 IsEmpty]: Start isEmpty. Operand 47833 states and 66112 transitions. [2021-11-13 01:31:49,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-11-13 01:31:49,175 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:49,176 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 9, 9, 9, 9, 9, 9, 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] [2021-11-13 01:31:49,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:49,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:49,392 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)] === [2021-11-13 01:31:49,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:49,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1524804619, now seen corresponding path program 1 times [2021-11-13 01:31:49,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:49,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1286009000] [2021-11-13 01:31:49,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:49,395 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:49,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:49,396 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:49,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 01:31:51,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:51,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:31:51,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:53,045 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2021-11-13 01:31:53,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:53,683 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2021-11-13 01:31:53,683 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:53,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1286009000] [2021-11-13 01:31:53,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1286009000] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:31:53,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:31:53,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-13 01:31:53,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823308114] [2021-11-13 01:31:53,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:53,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:31:53,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:53,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:31:53,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:31:53,685 INFO L87 Difference]: Start difference. First operand 47833 states and 66112 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-13 01:31:56,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:56,018 INFO L93 Difference]: Finished difference Result 47839 states and 66117 transitions. [2021-11-13 01:31:56,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 01:31:56,018 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 198 [2021-11-13 01:31:56,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:56,167 INFO L225 Difference]: With dead ends: 47839 [2021-11-13 01:31:56,167 INFO L226 Difference]: Without dead ends: 47837 [2021-11-13 01:31:56,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-13 01:31:56,182 INFO L933 BasicCegarLoop]: 2277 mSDtfsCounter, 2213 mSDsluCounter, 4534 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2222 SdHoareTripleChecker+Valid, 6811 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.60ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.37ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:56,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2222 Valid, 6811 Invalid, 21 Unknown, 0 Unchecked, 9.60ms Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 47.37ms Time] [2021-11-13 01:31:56,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47837 states. [2021-11-13 01:31:59,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47837 to 47837. [2021-11-13 01:31:59,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47837 states, 32786 states have (on average 1.2617275666442993) internal successors, (41367), 33826 states have internal predecessors, (41367), 12337 states have call successors, (12337), 2766 states have call predecessors, (12337), 2711 states have return successors, (12411), 11988 states have call predecessors, (12411), 12333 states have call successors, (12411) [2021-11-13 01:31:59,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47837 states to 47837 states and 66115 transitions. [2021-11-13 01:31:59,421 INFO L78 Accepts]: Start accepts. Automaton has 47837 states and 66115 transitions. Word has length 198 [2021-11-13 01:31:59,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:59,421 INFO L470 AbstractCegarLoop]: Abstraction has 47837 states and 66115 transitions. [2021-11-13 01:31:59,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-13 01:31:59,422 INFO L276 IsEmpty]: Start isEmpty. Operand 47837 states and 66115 transitions. [2021-11-13 01:31:59,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-13 01:31:59,431 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:59,432 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 9, 9, 9, 9, 9, 9, 5, 4, 4, 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] [2021-11-13 01:31:59,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:59,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:59,656 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)] === [2021-11-13 01:31:59,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:59,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1664025570, now seen corresponding path program 1 times [2021-11-13 01:31:59,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:59,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1489758057] [2021-11-13 01:31:59,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:59,659 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:59,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:59,660 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:59,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ae9f4c-743f-4f01-a860-bde61e442466/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 01:32:02,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:02,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 1746 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:32:02,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:03,304 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2021-11-13 01:32:03,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:03,960 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2021-11-13 01:32:03,960 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:03,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1489758057] [2021-11-13 01:32:03,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1489758057] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:32:03,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:32:03,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-13 01:32:03,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816636104] [2021-11-13 01:32:03,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:32:03,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:32:03,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:32:03,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:32:03,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:32:03,962 INFO L87 Difference]: Start difference. First operand 47837 states and 66115 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22)