./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.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_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/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_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/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_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/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 3fe54d83d46de95e8e0767545626d085bd64ef94fa067827f6d89c4bc8eb39d0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:52:19,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:52:19,538 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:52:19,590 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:52:19,591 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:52:19,592 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:52:19,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:52:19,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:52:19,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:52:19,600 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:52:19,601 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:52:19,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:52:19,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:52:19,604 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:52:19,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:52:19,608 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:52:19,609 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:52:19,610 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:52:19,612 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:52:19,615 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:52:19,617 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:52:19,623 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:52:19,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:52:19,626 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:52:19,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:52:19,637 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:52:19,637 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:52:19,639 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:52:19,640 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:52:19,641 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:52:19,643 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:52:19,644 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:52:19,646 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:52:19,648 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:52:19,650 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:52:19,650 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:52:19,651 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:52:19,651 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:52:19,652 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:52:19,653 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:52:19,653 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:52:19,654 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 22:52:19,712 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:52:19,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:52:19,714 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:52:19,714 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:52:19,715 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:52:19,716 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:52:19,716 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:52:19,716 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:52:19,717 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:52:19,717 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:52:19,718 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:52:19,718 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:52:19,719 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:52:19,719 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:52:19,719 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:52:19,719 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:52:19,720 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:52:19,720 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:52:19,721 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:52:19,721 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:52:19,721 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:52:19,721 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:52:19,722 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:52:19,722 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:52:19,722 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:52:19,722 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:52:19,723 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:52:19,723 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:52:19,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:52:19,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:52:19,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:52:19,726 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:52:19,726 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:52:19,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:52:19,727 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:52:19,727 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:52:19,727 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:52:19,728 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_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3fe54d83d46de95e8e0767545626d085bd64ef94fa067827f6d89c4bc8eb39d0 [2021-11-12 22:52:20,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:52:20,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:52:20,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:52:20,104 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:52:20,105 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:52:20,106 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i [2021-11-12 22:52:20,173 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/data/168695a4f/51025e874411471e99d9b110eacc21a3/FLAG4c3249db2 [2021-11-12 22:52:21,096 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:52:21,097 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i [2021-11-12 22:52:21,185 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/data/168695a4f/51025e874411471e99d9b110eacc21a3/FLAG4c3249db2 [2021-11-12 22:52:21,480 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/data/168695a4f/51025e874411471e99d9b110eacc21a3 [2021-11-12 22:52:21,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:52:21,485 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:52:21,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:52:21,489 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:52:21,492 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:52:21,493 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:52:21" (1/1) ... [2021-11-12 22:52:21,495 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53167287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:21, skipping insertion in model container [2021-11-12 22:52:21,496 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:52:21" (1/1) ... [2021-11-12 22:52:21,503 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:52:21,675 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:52:23,875 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:52:23,929 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:52:23,944 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:52:23,947 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:52:23,948 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:52:23,950 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:52:24,076 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:52:24,083 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:52:25,151 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_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358326,358339] [2021-11-12 22:52:25,156 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_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358495,358508] [2021-11-12 22:52:25,157 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_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358662,358675] [2021-11-12 22:52:25,165 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_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358830,358843] [2021-11-12 22:52:25,190 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:52:25,282 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 22:52:25,283 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3ba16b9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:25, skipping insertion in model container [2021-11-12 22:52:25,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:52:25,283 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 22:52:25,286 INFO L158 Benchmark]: Toolchain (without parser) took 3799.12ms. Allocated memory was 94.4MB in the beginning and 138.4MB in the end (delta: 44.0MB). Free memory was 59.0MB in the beginning and 73.6MB in the end (delta: -14.6MB). Peak memory consumption was 50.1MB. Max. memory is 16.1GB. [2021-11-12 22:52:25,287 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 77.6MB. Free memory is still 57.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:52:25,289 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3794.89ms. Allocated memory was 94.4MB in the beginning and 138.4MB in the end (delta: 44.0MB). Free memory was 58.7MB in the beginning and 73.6MB in the end (delta: -14.9MB). Peak memory consumption was 50.1MB. Max. memory is 16.1GB. [2021-11-12 22:52:25,291 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 77.6MB. Free memory is still 57.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3794.89ms. Allocated memory was 94.4MB in the beginning and 138.4MB in the end (delta: 44.0MB). Free memory was 58.7MB in the beginning and 73.6MB in the end (delta: -14.9MB). Peak memory consumption was 50.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6703]: 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_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/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_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/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_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/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 3fe54d83d46de95e8e0767545626d085bd64ef94fa067827f6d89c4bc8eb39d0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:52:27,552 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:52:27,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:52:27,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:52:27,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:52:27,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:52:27,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:52:27,605 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:52:27,607 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:52:27,608 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:52:27,609 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:52:27,611 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:52:27,611 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:52:27,613 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:52:27,614 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:52:27,616 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:52:27,617 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:52:27,618 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:52:27,626 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:52:27,629 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:52:27,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:52:27,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:52:27,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:52:27,635 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:52:27,639 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:52:27,640 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:52:27,640 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:52:27,642 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:52:27,642 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:52:27,644 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:52:27,644 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:52:27,645 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:52:27,646 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:52:27,647 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:52:27,648 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:52:27,649 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:52:27,650 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:52:27,650 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:52:27,651 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:52:27,652 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:52:27,653 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:52:27,655 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 22:52:27,701 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:52:27,703 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:52:27,705 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:52:27,705 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:52:27,705 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:52:27,705 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:52:27,706 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:52:27,706 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:52:27,706 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:52:27,706 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:52:27,709 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:52:27,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:52:27,709 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:52:27,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:52:27,710 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:52:27,710 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:52:27,710 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:52:27,711 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:52:27,711 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:52:27,711 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:52:27,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:52:27,712 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:52:27,712 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:52:27,712 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:52:27,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:52:27,713 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:52:27,713 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:52:27,713 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:52:27,713 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:52:27,714 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:52:27,714 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:52:27,714 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:52:27,714 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:52:27,715 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_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3fe54d83d46de95e8e0767545626d085bd64ef94fa067827f6d89c4bc8eb39d0 [2021-11-12 22:52:28,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:52:28,185 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:52:28,187 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:52:28,189 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:52:28,192 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:52:28,194 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i [2021-11-12 22:52:28,270 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/data/98c720a6f/4774e1e5ad114821903c412a7d35d6f4/FLAG3ac75e078 [2021-11-12 22:52:29,280 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:52:29,281 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i [2021-11-12 22:52:29,336 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/data/98c720a6f/4774e1e5ad114821903c412a7d35d6f4/FLAG3ac75e078 [2021-11-12 22:52:29,604 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/data/98c720a6f/4774e1e5ad114821903c412a7d35d6f4 [2021-11-12 22:52:29,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:52:29,607 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:52:29,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:52:29,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:52:29,613 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:52:29,614 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:52:29" (1/1) ... [2021-11-12 22:52:29,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ea84d16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:29, skipping insertion in model container [2021-11-12 22:52:29,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:52:29" (1/1) ... [2021-11-12 22:52:29,637 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:52:29,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:52:33,764 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_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358326,358339] [2021-11-12 22:52:33,767 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_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358495,358508] [2021-11-12 22:52:33,768 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_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358662,358675] [2021-11-12 22:52:33,769 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_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358830,358843] [2021-11-12 22:52:33,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:52:33,862 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 22:52:33,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:52:34,523 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_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358326,358339] [2021-11-12 22:52:34,523 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_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358495,358508] [2021-11-12 22:52:34,524 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_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358662,358675] [2021-11-12 22:52:34,524 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_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358830,358843] [2021-11-12 22:52:34,530 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:52:34,588 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:52:35,177 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_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358326,358339] [2021-11-12 22:52:35,178 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_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358495,358508] [2021-11-12 22:52:35,178 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_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358662,358675] [2021-11-12 22:52:35,179 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_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i[358830,358843] [2021-11-12 22:52:35,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:52:35,596 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:52:35,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:35 WrapperNode [2021-11-12 22:52:35,597 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:52:35,598 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:52:35,599 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:52:35,599 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:52:35,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:35" (1/1) ... [2021-11-12 22:52:35,722 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:35" (1/1) ... [2021-11-12 22:52:35,965 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:52:35,968 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:52:35,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:52:35,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:52:35,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:35" (1/1) ... [2021-11-12 22:52:35,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:35" (1/1) ... [2021-11-12 22:52:36,030 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:35" (1/1) ... [2021-11-12 22:52:36,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:35" (1/1) ... [2021-11-12 22:52:36,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:35" (1/1) ... [2021-11-12 22:52:36,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:35" (1/1) ... [2021-11-12 22:52:36,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:35" (1/1) ... [2021-11-12 22:52:36,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:52:36,263 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:52:36,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:52:36,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:52:36,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:35" (1/1) ... [2021-11-12 22:52:36,271 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:52:36,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:52:36,295 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:52:36,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:52:36,341 INFO L130 BoogieDeclarations]: Found specification of procedure device_set_wakeup_enable [2021-11-12 22:52:36,342 INFO L138 BoogieDeclarations]: Found implementation of procedure device_set_wakeup_enable [2021-11-12 22:52:36,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-12 22:52:36,342 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-12 22:52:36,342 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_0_6 [2021-11-12 22:52:36,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_0_6 [2021-11-12 22:52:36,343 INFO L130 BoogieDeclarations]: Found specification of procedure desc_set_buf_addr [2021-11-12 22:52:36,343 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_set_buf_addr [2021-11-12 22:52:36,343 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-12 22:52:36,343 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-12 22:52:36,343 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-12 22:52:36,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-12 22:52:36,344 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_interrupt [2021-11-12 22:52:36,344 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_interrupt [2021-11-12 22:52:36,344 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-12 22:52:36,344 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-12 22:52:36,345 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_rx_refill [2021-11-12 22:52:36,345 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_rx_refill [2021-11-12 22:52:36,345 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-12 22:52:36,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-12 22:52:36,345 INFO L130 BoogieDeclarations]: Found specification of procedure netif_napi_del [2021-11-12 22:52:36,345 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_napi_del [2021-11-12 22:52:36,346 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-12 22:52:36,346 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-12 22:52:36,346 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-12 22:52:36,346 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-12 22:52:36,346 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_poll_controller [2021-11-12 22:52:36,347 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_poll_controller [2021-11-12 22:52:36,347 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2021-11-12 22:52:36,347 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2021-11-12 22:52:36,347 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_set_mac_addr [2021-11-12 22:52:36,348 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_set_mac_addr [2021-11-12 22:52:36,348 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_tx_unlock [2021-11-12 22:52:36,348 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_tx_unlock [2021-11-12 22:52:36,348 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_tx_timeout [2021-11-12 22:52:36,348 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_tx_timeout [2021-11-12 22:52:36,348 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-12 22:52:36,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-12 22:52:36,349 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-12 22:52:36,349 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-12 22:52:36,349 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-12 22:52:36,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-12 22:52:36,350 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_resource [2021-11-12 22:52:36,351 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_resource [2021-11-12 22:52:36,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:52:36,352 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-12 22:52:36,353 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-12 22:52:36,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:52:36,353 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-12 22:52:36,353 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-12 22:52:36,353 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-12 22:52:36,354 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-12 22:52:36,354 INFO L130 BoogieDeclarations]: Found specification of procedure desc_set_buf_addr_and_size [2021-11-12 22:52:36,354 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_set_buf_addr_and_size [2021-11-12 22:52:36,355 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-12 22:52:36,355 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-12 22:52:36,355 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_probe [2021-11-12 22:52:36,355 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_probe [2021-11-12 22:52:36,355 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-12 22:52:36,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-12 22:52:36,356 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~C_ULONG~X~C_INT~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-12 22:52:36,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~C_ULONG~X~C_INT~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-12 22:52:36,356 INFO L130 BoogieDeclarations]: Found specification of procedure desc_set_buf_len [2021-11-12 22:52:36,356 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_set_buf_len [2021-11-12 22:52:36,357 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-12 22:52:36,357 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-12 22:52:36,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-12 22:52:36,358 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-12 22:52:36,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-12 22:52:36,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-12 22:52:36,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-12 22:52:36,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-12 22:52:36,359 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_suspend [2021-11-12 22:52:36,359 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_suspend [2021-11-12 22:52:36,359 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_tx_lock [2021-11-12 22:52:36,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_tx_lock [2021-11-12 22:52:36,360 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_open [2021-11-12 22:52:36,360 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_open [2021-11-12 22:52:36,360 INFO L130 BoogieDeclarations]: Found specification of procedure desc_get_buf_len [2021-11-12 22:52:36,360 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_get_buf_len [2021-11-12 22:52:36,361 INFO L130 BoogieDeclarations]: Found specification of procedure napi_enable [2021-11-12 22:52:36,361 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_enable [2021-11-12 22:52:36,362 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-12 22:52:36,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-12 22:52:36,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 22:52:36,362 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-12 22:52:36,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-12 22:52:36,362 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-12 22:52:36,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-12 22:52:36,363 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2021-11-12 22:52:36,363 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2021-11-12 22:52:36,363 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_pmt [2021-11-12 22:52:36,363 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_pmt [2021-11-12 22:52:36,363 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-12 22:52:36,364 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-12 22:52:36,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-12 22:52:36,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-12 22:52:36,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 22:52:36,365 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_free_tx_skbufs [2021-11-12 22:52:36,365 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_free_tx_skbufs [2021-11-12 22:52:36,365 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-12 22:52:36,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-12 22:52:36,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-12 22:52:36,366 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-12 22:52:36,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-12 22:52:36,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-12 22:52:36,370 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_INT~X~$Pointer$~TO~C_INT [2021-11-12 22:52:36,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_INT~X~$Pointer$~TO~C_INT [2021-11-12 22:52:36,370 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~X~$Pointer$~TO~VOID [2021-11-12 22:52:36,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~X~$Pointer$~TO~VOID [2021-11-12 22:52:36,371 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_drvdata [2021-11-12 22:52:36,371 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_drvdata [2021-11-12 22:52:36,371 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2021-11-12 22:52:36,372 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2021-11-12 22:52:36,380 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2021-11-12 22:52:36,380 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2021-11-12 22:52:36,380 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-12 22:52:36,380 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-12 22:52:36,380 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-12 22:52:36,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-12 22:52:36,381 INFO L130 BoogieDeclarations]: Found specification of procedure device_can_wakeup [2021-11-12 22:52:36,381 INFO L138 BoogieDeclarations]: Found implementation of procedure device_can_wakeup [2021-11-12 22:52:36,381 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-11-12 22:52:36,381 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-11-12 22:52:36,381 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-12 22:52:36,382 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-12 22:52:36,382 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-12 22:52:36,382 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-12 22:52:36,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-12 22:52:36,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:52:36,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:52:36,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 22:52:36,383 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_mac_disable [2021-11-12 22:52:36,383 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_mac_disable [2021-11-12 22:52:36,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 22:52:36,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 22:52:36,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-12 22:52:36,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-12 22:52:36,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-12 22:52:36,384 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-12 22:52:36,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-12 22:52:36,384 INFO L130 BoogieDeclarations]: Found specification of procedure desc_init_tx_desc [2021-11-12 22:52:36,384 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_init_tx_desc [2021-11-12 22:52:36,384 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-12 22:52:36,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-12 22:52:36,385 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-12 22:52:36,385 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-12 22:52:36,385 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-12 22:52:36,385 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2021-11-12 22:52:36,385 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2021-11-12 22:52:36,385 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-12 22:52:36,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-12 22:52:36,386 INFO L130 BoogieDeclarations]: Found specification of procedure bitrev32 [2021-11-12 22:52:36,386 INFO L138 BoogieDeclarations]: Found implementation of procedure bitrev32 [2021-11-12 22:52:36,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-12 22:52:36,386 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-12 22:52:36,386 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_schedule [2021-11-12 22:52:36,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_schedule [2021-11-12 22:52:36,387 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2021-11-12 22:52:36,387 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2021-11-12 22:52:36,387 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2021-11-12 22:52:36,387 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2021-11-12 22:52:36,387 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_mac_enable [2021-11-12 22:52:36,387 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_mac_enable [2021-11-12 22:52:36,387 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-12 22:52:36,388 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-12 22:52:36,388 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-12 22:52:36,388 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-12 22:52:36,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:52:36,388 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_stop [2021-11-12 22:52:36,388 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_stop [2021-11-12 22:52:36,388 INFO L130 BoogieDeclarations]: Found specification of procedure desc_set_tx_owner [2021-11-12 22:52:36,389 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_set_tx_owner [2021-11-12 22:52:36,389 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-12 22:52:36,390 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-12 22:52:36,390 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_irq [2021-11-12 22:52:36,390 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_irq [2021-11-12 22:52:36,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 22:52:36,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 22:52:36,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 22:52:36,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-12 22:52:36,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 22:52:36,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 22:52:36,391 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-12 22:52:36,391 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-12 22:52:36,391 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-12 22:52:36,391 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-12 22:52:36,391 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-12 22:52:36,392 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-12 22:52:36,392 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2021-11-12 22:52:36,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2021-11-12 22:52:36,392 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-12 22:52:36,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-12 22:52:36,392 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-12 22:52:36,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-12 22:52:36,393 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_set_flow_ctrl [2021-11-12 22:52:36,393 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_set_flow_ctrl [2021-11-12 22:52:36,393 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-12 22:52:36,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-12 22:52:36,393 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_resume [2021-11-12 22:52:36,393 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_resume [2021-11-12 22:52:36,394 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-12 22:52:36,394 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-12 22:52:36,394 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-12 22:52:36,394 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-12 22:52:36,394 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-12 22:52:36,394 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-12 22:52:36,394 INFO L130 BoogieDeclarations]: Found specification of procedure irq_set_irq_wake [2021-11-12 22:52:36,395 INFO L138 BoogieDeclarations]: Found implementation of procedure irq_set_irq_wake [2021-11-12 22:52:36,395 INFO L130 BoogieDeclarations]: Found specification of procedure desc_get_tx_fs [2021-11-12 22:52:36,395 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_get_tx_fs [2021-11-12 22:52:36,395 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2021-11-12 22:52:36,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2021-11-12 22:52:36,395 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-12 22:52:36,395 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-12 22:52:36,396 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_set_rx_mode [2021-11-12 22:52:36,396 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_set_rx_mode [2021-11-12 22:52:36,396 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2021-11-12 22:52:36,396 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2021-11-12 22:52:36,396 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-12 22:52:36,396 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-12 22:52:36,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-12 22:52:36,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-12 22:52:36,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-12 22:52:36,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-12 22:52:36,397 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-12 22:52:36,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-12 22:52:36,397 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-12 22:52:36,397 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-12 22:52:36,398 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-12 22:52:36,398 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-12 22:52:36,399 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-11-12 22:52:36,402 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-11-12 22:52:36,403 INFO L130 BoogieDeclarations]: Found specification of procedure __readl [2021-11-12 22:52:36,403 INFO L138 BoogieDeclarations]: Found implementation of procedure __readl [2021-11-12 22:52:36,403 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-12 22:52:36,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-12 22:52:36,403 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-12 22:52:36,403 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-12 22:52:36,404 INFO L130 BoogieDeclarations]: Found specification of procedure __writel [2021-11-12 22:52:36,404 INFO L138 BoogieDeclarations]: Found implementation of procedure __writel [2021-11-12 22:52:36,404 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_1_6 [2021-11-12 22:52:36,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_1_6 [2021-11-12 22:52:36,405 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-12 22:52:36,405 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-12 22:52:36,405 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-11-12 22:52:36,405 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-11-12 22:52:36,405 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-12 22:52:36,406 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-12 22:52:36,406 INFO L130 BoogieDeclarations]: Found specification of procedure xgmac_remove [2021-11-12 22:52:36,406 INFO L138 BoogieDeclarations]: Found implementation of procedure xgmac_remove [2021-11-12 22:52:36,406 INFO L130 BoogieDeclarations]: Found specification of procedure desc_get_buf_addr [2021-11-12 22:52:36,406 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_get_buf_addr [2021-11-12 22:52:36,406 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_page [2021-11-12 22:52:36,406 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_page [2021-11-12 22:52:36,407 INFO L130 BoogieDeclarations]: Found specification of procedure resource_size [2021-11-12 22:52:36,407 INFO L138 BoogieDeclarations]: Found implementation of procedure resource_size [2021-11-12 22:52:36,407 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-12 22:52:36,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-12 22:52:36,407 INFO L130 BoogieDeclarations]: Found specification of procedure desc_get_tx_ls [2021-11-12 22:52:36,407 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_get_tx_ls [2021-11-12 22:52:42,598 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-12 23:01:52,178 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-12 23:01:52,255 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:01:52,256 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-11-12 23:01:52,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:01:52 BoogieIcfgContainer [2021-11-12 23:01:52,261 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:01:52,263 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:01:52,263 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:01:52,266 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:01:52,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:52:29" (1/3) ... [2021-11-12 23:01:52,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@167693e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:01:52, skipping insertion in model container [2021-11-12 23:01:52,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:35" (2/3) ... [2021-11-12 23:01:52,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@167693e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:01:52, skipping insertion in model container [2021-11-12 23:01:52,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:01:52" (3/3) ... [2021-11-12 23:01:52,269 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-calxeda-xgmac.cil.i [2021-11-12 23:01:52,274 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:01:52,274 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-12 23:01:52,336 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:01:52,343 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:01:52,343 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-12 23:01:52,402 INFO L276 IsEmpty]: Start isEmpty. Operand has 2060 states, 1414 states have (on average 1.2545968882602545) internal successors, (1774), 1435 states have internal predecessors, (1774), 528 states have call successors, (528), 116 states have call predecessors, (528), 115 states have return successors, (521), 516 states have call predecessors, (521), 521 states have call successors, (521) [2021-11-12 23:01:52,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-12 23:01:52,417 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:01:52,418 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:01:52,418 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:01:52,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:01:52,424 INFO L85 PathProgramCache]: Analyzing trace with hash -90792486, now seen corresponding path program 1 times [2021-11-12 23:01:52,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:01:52,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2000308154] [2021-11-12 23:01:52,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:01:52,444 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:01:52,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:01:52,448 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:01:52,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:01:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:01:56,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 1963 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:01:56,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:01:56,927 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2021-11-12 23:01:56,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:01:57,411 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2021-11-12 23:01:57,411 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:01:57,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2000308154] [2021-11-12 23:01:57,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2000308154] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:01:57,412 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:01:57,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:01:57,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649170562] [2021-11-12 23:01:57,415 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:01:57,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:01:57,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:01:57,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:01:57,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:01:57,462 INFO L87 Difference]: Start difference. First operand has 2060 states, 1414 states have (on average 1.2545968882602545) internal successors, (1774), 1435 states have internal predecessors, (1774), 528 states have call successors, (528), 116 states have call predecessors, (528), 115 states have return successors, (521), 516 states have call predecessors, (521), 521 states have call successors, (521) Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-11-12 23:02:00,017 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.54s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:02:06,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:02:06,843 INFO L93 Difference]: Finished difference Result 7887 states and 10971 transitions. [2021-11-12 23:02:06,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:02:06,846 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 167 [2021-11-12 23:02:06,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:02:06,925 INFO L225 Difference]: With dead ends: 7887 [2021-11-12 23:02:06,926 INFO L226 Difference]: Without dead ends: 5837 [2021-11-12 23:02:06,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:02:06,960 INFO L933 BasicCegarLoop]: 3735 mSDtfsCounter, 5250 mSDsluCounter, 4890 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8074.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5250 SdHoareTripleChecker+Valid, 8625 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 70.60ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8791.20ms IncrementalHoareTripleChecker+Time [2021-11-12 23:02:06,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5250 Valid, 8625 Invalid, 1027 Unknown, 0 Unchecked, 70.60ms Time], IncrementalHoareTripleChecker [7 Valid, 1019 Invalid, 1 Unknown, 0 Unchecked, 8791.20ms Time] [2021-11-12 23:02:06,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5837 states. [2021-11-12 23:02:07,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5837 to 5811. [2021-11-12 23:02:07,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5811 states, 3981 states have (on average 1.227078623461442) internal successors, (4885), 4039 states have internal predecessors, (4885), 1487 states have call successors, (1487), 341 states have call predecessors, (1487), 340 states have return successors, (1484), 1469 states have call predecessors, (1484), 1484 states have call successors, (1484) [2021-11-12 23:02:07,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5811 states to 5811 states and 7856 transitions. [2021-11-12 23:02:07,460 INFO L78 Accepts]: Start accepts. Automaton has 5811 states and 7856 transitions. Word has length 167 [2021-11-12 23:02:07,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:02:07,462 INFO L470 AbstractCegarLoop]: Abstraction has 5811 states and 7856 transitions. [2021-11-12 23:02:07,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-11-12 23:02:07,462 INFO L276 IsEmpty]: Start isEmpty. Operand 5811 states and 7856 transitions. [2021-11-12 23:02:07,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-12 23:02:07,471 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:02:07,472 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:02:07,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:02:07,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:02:07,694 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:02:07,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:02:07,695 INFO L85 PathProgramCache]: Analyzing trace with hash 852266281, now seen corresponding path program 1 times [2021-11-12 23:02:07,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:02:07,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [362367913] [2021-11-12 23:02:07,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:02:07,699 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:02:07,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:02:07,702 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:02:07,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:02:11,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:02:11,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 2009 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:02:11,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:02:11,890 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2021-11-12 23:02:11,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:02:12,415 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2021-11-12 23:02:12,416 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:02:12,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [362367913] [2021-11-12 23:02:12,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [362367913] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:02:12,416 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:02:12,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:02:12,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839656227] [2021-11-12 23:02:12,420 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:02:12,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:02:12,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:02:12,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:02:12,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:02:12,425 INFO L87 Difference]: Start difference. First operand 5811 states and 7856 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-12 23:02:15,076 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.65s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:02:15,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:02:15,977 INFO L93 Difference]: Finished difference Result 16156 states and 21854 transitions. [2021-11-12 23:02:15,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:02:15,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 182 [2021-11-12 23:02:15,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:02:16,071 INFO L225 Difference]: With dead ends: 16156 [2021-11-12 23:02:16,071 INFO L226 Difference]: Without dead ends: 10376 [2021-11-12 23:02:16,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:02:16,102 INFO L933 BasicCegarLoop]: 3127 mSDtfsCounter, 2110 mSDsluCounter, 2623 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2936.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2110 SdHoareTripleChecker+Valid, 5750 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.76ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3111.75ms IncrementalHoareTripleChecker+Time [2021-11-12 23:02:16,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2110 Valid, 5750 Invalid, 79 Unknown, 0 Unchecked, 16.76ms Time], IncrementalHoareTripleChecker [7 Valid, 71 Invalid, 1 Unknown, 0 Unchecked, 3111.75ms Time] [2021-11-12 23:02:16,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10376 states. [2021-11-12 23:02:16,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10376 to 10339. [2021-11-12 23:02:16,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10339 states, 7070 states have (on average 1.225035360678925) internal successors, (8661), 7178 states have internal predecessors, (8661), 2611 states have call successors, (2611), 659 states have call predecessors, (2611), 655 states have return successors, (2710), 2564 states have call predecessors, (2710), 2608 states have call successors, (2710) [2021-11-12 23:02:16,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10339 states to 10339 states and 13982 transitions. [2021-11-12 23:02:16,850 INFO L78 Accepts]: Start accepts. Automaton has 10339 states and 13982 transitions. Word has length 182 [2021-11-12 23:02:16,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:02:16,852 INFO L470 AbstractCegarLoop]: Abstraction has 10339 states and 13982 transitions. [2021-11-12 23:02:16,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-12 23:02:16,854 INFO L276 IsEmpty]: Start isEmpty. Operand 10339 states and 13982 transitions. [2021-11-12 23:02:16,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-11-12 23:02:16,864 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:02:16,865 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:02:16,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:02:17,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:02:17,078 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:02:17,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:02:17,078 INFO L85 PathProgramCache]: Analyzing trace with hash 911240553, now seen corresponding path program 1 times [2021-11-12 23:02:17,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:02:17,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1755248208] [2021-11-12 23:02:17,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:02:17,084 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:02:17,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:02:17,085 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:02:17,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:02:20,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:02:20,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 2074 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:02:20,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:02:21,431 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2021-11-12 23:02:21,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:02:21,966 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2021-11-12 23:02:21,967 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:02:21,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1755248208] [2021-11-12 23:02:21,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1755248208] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:02:21,967 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:02:21,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:02:21,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961711444] [2021-11-12 23:02:21,970 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:02:21,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:02:21,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:02:21,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:02:21,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:02:21,972 INFO L87 Difference]: Start difference. First operand 10339 states and 13982 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2021-11-12 23:02:24,515 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:02:32,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:02:32,464 INFO L93 Difference]: Finished difference Result 36607 states and 49100 transitions. [2021-11-12 23:02:32,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:02:32,465 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 197 [2021-11-12 23:02:32,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:02:32,783 INFO L225 Difference]: With dead ends: 36607 [2021-11-12 23:02:32,783 INFO L226 Difference]: Without dead ends: 26299 [2021-11-12 23:02:32,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:02:32,838 INFO L933 BasicCegarLoop]: 4748 mSDtfsCounter, 5177 mSDsluCounter, 3773 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 649 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8881.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5177 SdHoareTripleChecker+Valid, 8521 SdHoareTripleChecker+Invalid, 1766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.27ms SdHoareTripleChecker+Time, 649 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9764.43ms IncrementalHoareTripleChecker+Time [2021-11-12 23:02:32,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5177 Valid, 8521 Invalid, 1766 Unknown, 0 Unchecked, 38.27ms Time], IncrementalHoareTripleChecker [649 Valid, 1116 Invalid, 1 Unknown, 0 Unchecked, 9764.43ms Time] [2021-11-12 23:02:32,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26299 states. [2021-11-12 23:02:33,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26299 to 26213. [2021-11-12 23:02:34,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26213 states, 17776 states have (on average 1.2133775877587758) internal successors, (21569), 18066 states have internal predecessors, (21569), 6603 states have call successors, (6603), 1841 states have call predecessors, (6603), 1831 states have return successors, (6708), 6470 states have call predecessors, (6708), 6600 states have call successors, (6708) [2021-11-12 23:02:34,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26213 states to 26213 states and 34880 transitions. [2021-11-12 23:02:34,132 INFO L78 Accepts]: Start accepts. Automaton has 26213 states and 34880 transitions. Word has length 197 [2021-11-12 23:02:34,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:02:34,133 INFO L470 AbstractCegarLoop]: Abstraction has 26213 states and 34880 transitions. [2021-11-12 23:02:34,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2021-11-12 23:02:34,134 INFO L276 IsEmpty]: Start isEmpty. Operand 26213 states and 34880 transitions. [2021-11-12 23:02:34,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-12 23:02:34,141 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:02:34,141 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 13, 13, 13, 13, 13, 13, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:02:34,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:02:34,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:02:34,362 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)] === [2021-11-12 23:02:34,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:02:34,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1216418902, now seen corresponding path program 1 times [2021-11-12 23:02:34,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:02:34,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1090116540] [2021-11-12 23:02:34,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:02:34,367 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:02:34,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:02:34,369 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:02:34,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:02:37,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:02:38,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 2072 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:02:38,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:02:39,696 INFO L134 CoverageAnalysis]: Checked inductivity of 906 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 906 trivial. 0 not checked. [2021-11-12 23:02:39,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:02:40,766 INFO L134 CoverageAnalysis]: Checked inductivity of 906 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 906 trivial. 0 not checked. [2021-11-12 23:02:40,766 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:02:40,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1090116540] [2021-11-12 23:02:40,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1090116540] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:02:40,766 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:02:40,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 7 [2021-11-12 23:02:40,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559526444] [2021-11-12 23:02:40,767 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:02:40,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:02:40,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:02:40,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:02:40,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:02:40,768 INFO L87 Difference]: Start difference. First operand 26213 states and 34880 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, (47), 4 states have call predecessors, (47), 2 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2021-11-12 23:02:41,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:02:41,627 INFO L93 Difference]: Finished difference Result 26626 states and 35258 transitions. [2021-11-12 23:02:41,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:02:41,628 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, (47), 4 states have call predecessors, (47), 2 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 219 [2021-11-12 23:02:41,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:02:41,762 INFO L225 Difference]: With dead ends: 26626 [2021-11-12 23:02:41,762 INFO L226 Difference]: Without dead ends: 26624 [2021-11-12 23:02:41,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:02:41,782 INFO L933 BasicCegarLoop]: 2728 mSDtfsCounter, 2590 mSDsluCounter, 8221 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 79.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2601 SdHoareTripleChecker+Valid, 10949 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.47ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 85.04ms IncrementalHoareTripleChecker+Time [2021-11-12 23:02:41,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2601 Valid, 10949 Invalid, 26 Unknown, 0 Unchecked, 22.47ms Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 85.04ms Time] [2021-11-12 23:02:41,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26624 states. [2021-11-12 23:02:43,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26624 to 26622. [2021-11-12 23:02:43,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26622 states, 18049 states have (on average 1.211812288769461) internal successors, (21872), 18357 states have internal predecessors, (21872), 6639 states have call successors, (6639), 1941 states have call predecessors, (6639), 1931 states have return successors, (6744), 6506 states have call predecessors, (6744), 6636 states have call successors, (6744) [2021-11-12 23:02:43,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26622 states to 26622 states and 35255 transitions. [2021-11-12 23:02:43,482 INFO L78 Accepts]: Start accepts. Automaton has 26622 states and 35255 transitions. Word has length 219 [2021-11-12 23:02:43,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:02:43,483 INFO L470 AbstractCegarLoop]: Abstraction has 26622 states and 35255 transitions. [2021-11-12 23:02:43,484 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, (47), 4 states have call predecessors, (47), 2 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2021-11-12 23:02:43,484 INFO L276 IsEmpty]: Start isEmpty. Operand 26622 states and 35255 transitions. [2021-11-12 23:02:43,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-11-12 23:02:43,493 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:02:43,493 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 13, 13, 13, 13, 13, 13, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:02:43,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:02:43,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:02:43,710 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:02:43,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:02:43,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1258173761, now seen corresponding path program 1 times [2021-11-12 23:02:43,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:02:43,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [314717283] [2021-11-12 23:02:43,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:02:43,714 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:02:43,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:02:43,716 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:02:43,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:02:47,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:02:47,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 2079 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:02:47,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:02:49,320 INFO L134 CoverageAnalysis]: Checked inductivity of 908 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 906 trivial. 0 not checked. [2021-11-12 23:02:49,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:02:50,214 INFO L134 CoverageAnalysis]: Checked inductivity of 908 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 906 trivial. 0 not checked. [2021-11-12 23:02:50,214 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:02:50,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [314717283] [2021-11-12 23:02:50,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [314717283] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:02:50,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:02:50,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 23:02:50,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027796707] [2021-11-12 23:02:50,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:02:50,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:02:50,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:02:50,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:02:50,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:02:50,217 INFO L87 Difference]: Start difference. First operand 26622 states and 35255 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, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-12 23:02:51,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:02:51,157 INFO L93 Difference]: Finished difference Result 26628 states and 35260 transitions. [2021-11-12 23:02:51,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:02:51,157 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, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 224 [2021-11-12 23:02:51,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:02:51,280 INFO L225 Difference]: With dead ends: 26628 [2021-11-12 23:02:51,280 INFO L226 Difference]: Without dead ends: 26626 [2021-11-12 23:02:51,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:02:51,294 INFO L933 BasicCegarLoop]: 2705 mSDtfsCounter, 2638 mSDsluCounter, 5391 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2648 SdHoareTripleChecker+Valid, 8096 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.27ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72.08ms IncrementalHoareTripleChecker+Time [2021-11-12 23:02:51,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2648 Valid, 8096 Invalid, 20 Unknown, 0 Unchecked, 15.27ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 72.08ms Time] [2021-11-12 23:02:51,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26626 states. [2021-11-12 23:02:52,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26626 to 26626. [2021-11-12 23:02:52,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26626 states, 18052 states have (on average 1.2117770884112564) internal successors, (21875), 18360 states have internal predecessors, (21875), 6639 states have call successors, (6639), 1942 states have call predecessors, (6639), 1932 states have return successors, (6744), 6506 states have call predecessors, (6744), 6636 states have call successors, (6744) [2021-11-12 23:02:52,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26626 states to 26626 states and 35258 transitions. [2021-11-12 23:02:52,961 INFO L78 Accepts]: Start accepts. Automaton has 26626 states and 35258 transitions. Word has length 224 [2021-11-12 23:02:52,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:02:52,964 INFO L470 AbstractCegarLoop]: Abstraction has 26626 states and 35258 transitions. [2021-11-12 23:02:52,964 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, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-12 23:02:52,964 INFO L276 IsEmpty]: Start isEmpty. Operand 26626 states and 35258 transitions. [2021-11-12 23:02:52,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-12 23:02:52,973 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:02:52,973 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 13, 13, 13, 13, 13, 13, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:02:53,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:02:53,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:02:53,194 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:02:53,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:02:53,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1569887798, now seen corresponding path program 1 times [2021-11-12 23:02:53,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:02:53,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1622636511] [2021-11-12 23:02:53,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:02:53,198 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:02:53,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:02:53,201 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:02:53,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:02:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:02:56,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 2086 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:02:56,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:02:58,381 INFO L134 CoverageAnalysis]: Checked inductivity of 914 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 910 trivial. 0 not checked. [2021-11-12 23:02:58,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:02:59,241 INFO L134 CoverageAnalysis]: Checked inductivity of 914 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 910 trivial. 0 not checked. [2021-11-12 23:02:59,242 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:02:59,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1622636511] [2021-11-12 23:02:59,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1622636511] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:02:59,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:02:59,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 23:02:59,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020039832] [2021-11-12 23:02:59,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:02:59,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:02:59,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:02:59,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:02:59,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:02:59,244 INFO L87 Difference]: Start difference. First operand 26626 states and 35258 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, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-12 23:03:00,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:03:00,271 INFO L93 Difference]: Finished difference Result 26632 states and 35263 transitions. [2021-11-12 23:03:00,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:03:00,272 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, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 229 [2021-11-12 23:03:00,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:03:00,382 INFO L225 Difference]: With dead ends: 26632 [2021-11-12 23:03:00,382 INFO L226 Difference]: Without dead ends: 26630 [2021-11-12 23:03:00,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 451 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:03:00,399 INFO L933 BasicCegarLoop]: 2705 mSDtfsCounter, 2638 mSDsluCounter, 5391 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2647 SdHoareTripleChecker+Valid, 8096 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.40ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.63ms IncrementalHoareTripleChecker+Time [2021-11-12 23:03:00,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2647 Valid, 8096 Invalid, 20 Unknown, 0 Unchecked, 12.40ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 68.63ms Time] [2021-11-12 23:03:00,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26630 states. [2021-11-12 23:03:01,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26630 to 26630. [2021-11-12 23:03:01,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26630 states, 18055 states have (on average 1.2117418997507616) internal successors, (21878), 18363 states have internal predecessors, (21878), 6639 states have call successors, (6639), 1943 states have call predecessors, (6639), 1933 states have return successors, (6744), 6506 states have call predecessors, (6744), 6636 states have call successors, (6744) [2021-11-12 23:03:01,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26630 states to 26630 states and 35261 transitions. [2021-11-12 23:03:01,840 INFO L78 Accepts]: Start accepts. Automaton has 26630 states and 35261 transitions. Word has length 229 [2021-11-12 23:03:01,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:03:01,841 INFO L470 AbstractCegarLoop]: Abstraction has 26630 states and 35261 transitions. [2021-11-12 23:03:01,841 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, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-12 23:03:01,841 INFO L276 IsEmpty]: Start isEmpty. Operand 26630 states and 35261 transitions. [2021-11-12 23:03:01,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-11-12 23:03:01,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:03:01,962 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 13, 13, 13, 13, 13, 13, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:03:02,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:03:02,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:03:02,171 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:03:02,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:03:02,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1044626081, now seen corresponding path program 1 times [2021-11-12 23:03:02,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:03:02,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [627179846] [2021-11-12 23:03:02,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:03:02,176 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:03:02,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:03:02,177 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:03:02,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:03:05,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:03:05,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 2093 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:03:05,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:03:07,444 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 918 trivial. 0 not checked. [2021-11-12 23:03:07,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:03:08,359 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 918 trivial. 0 not checked. [2021-11-12 23:03:08,360 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:03:08,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [627179846] [2021-11-12 23:03:08,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [627179846] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:03:08,360 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:03:08,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 23:03:08,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141460409] [2021-11-12 23:03:08,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:03:08,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:03:08,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:03:08,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:03:08,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:03:08,362 INFO L87 Difference]: Start difference. First operand 26630 states and 35261 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, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-12 23:03:09,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:03:09,301 INFO L93 Difference]: Finished difference Result 26636 states and 35266 transitions. [2021-11-12 23:03:09,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:03:09,302 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, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 234 [2021-11-12 23:03:09,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:03:09,407 INFO L225 Difference]: With dead ends: 26636 [2021-11-12 23:03:09,407 INFO L226 Difference]: Without dead ends: 26634 [2021-11-12 23:03:09,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 461 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:03:09,424 INFO L933 BasicCegarLoop]: 2705 mSDtfsCounter, 2638 mSDsluCounter, 5391 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2646 SdHoareTripleChecker+Valid, 8096 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.00ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63.79ms IncrementalHoareTripleChecker+Time [2021-11-12 23:03:09,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2646 Valid, 8096 Invalid, 20 Unknown, 0 Unchecked, 10.00ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 63.79ms Time] [2021-11-12 23:03:09,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26634 states. [2021-11-12 23:03:10,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26634 to 26634. [2021-11-12 23:03:10,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26634 states, 18058 states have (on average 1.2117067227821465) internal successors, (21881), 18366 states have internal predecessors, (21881), 6639 states have call successors, (6639), 1944 states have call predecessors, (6639), 1934 states have return successors, (6744), 6506 states have call predecessors, (6744), 6636 states have call successors, (6744) [2021-11-12 23:03:10,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26634 states to 26634 states and 35264 transitions. [2021-11-12 23:03:10,970 INFO L78 Accepts]: Start accepts. Automaton has 26634 states and 35264 transitions. Word has length 234 [2021-11-12 23:03:10,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:03:10,971 INFO L470 AbstractCegarLoop]: Abstraction has 26634 states and 35264 transitions. [2021-11-12 23:03:10,971 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, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-12 23:03:10,971 INFO L276 IsEmpty]: Start isEmpty. Operand 26634 states and 35264 transitions. [2021-11-12 23:03:10,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-12 23:03:10,985 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:03:10,985 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 13, 13, 13, 13, 13, 13, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:03:11,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:03:11,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:03:11,206 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:03:11,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:03:11,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1965133846, now seen corresponding path program 1 times [2021-11-12 23:03:11,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:03:11,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2099245455] [2021-11-12 23:03:11,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:03:11,211 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:03:11,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:03:11,213 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:03:11,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:03:14,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:03:14,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 2100 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:03:14,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:03:16,483 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2021-11-12 23:03:16,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:03:17,450 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2021-11-12 23:03:17,450 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:03:17,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2099245455] [2021-11-12 23:03:17,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2099245455] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:03:17,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:03:17,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 23:03:17,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178763412] [2021-11-12 23:03:17,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:03:17,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:03:17,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:03:17,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:03:17,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:03:17,453 INFO L87 Difference]: Start difference. First operand 26634 states and 35264 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, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-12 23:03:18,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:03:18,455 INFO L93 Difference]: Finished difference Result 26640 states and 35269 transitions. [2021-11-12 23:03:18,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:03:18,456 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, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 239 [2021-11-12 23:03:18,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:03:18,533 INFO L225 Difference]: With dead ends: 26640 [2021-11-12 23:03:18,533 INFO L226 Difference]: Without dead ends: 26638 [2021-11-12 23:03:18,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 471 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:03:18,545 INFO L933 BasicCegarLoop]: 2705 mSDtfsCounter, 2638 mSDsluCounter, 5391 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2645 SdHoareTripleChecker+Valid, 8096 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.75ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.55ms IncrementalHoareTripleChecker+Time [2021-11-12 23:03:18,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2645 Valid, 8096 Invalid, 20 Unknown, 0 Unchecked, 9.75ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 64.55ms Time] [2021-11-12 23:03:18,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26638 states. [2021-11-12 23:03:20,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26638 to 26638. [2021-11-12 23:03:20,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26638 states, 18061 states have (on average 1.2116715574995847) internal successors, (21884), 18369 states have internal predecessors, (21884), 6639 states have call successors, (6639), 1945 states have call predecessors, (6639), 1935 states have return successors, (6744), 6506 states have call predecessors, (6744), 6636 states have call successors, (6744) [2021-11-12 23:03:20,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26638 states to 26638 states and 35267 transitions. [2021-11-12 23:03:20,125 INFO L78 Accepts]: Start accepts. Automaton has 26638 states and 35267 transitions. Word has length 239 [2021-11-12 23:03:20,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:03:20,125 INFO L470 AbstractCegarLoop]: Abstraction has 26638 states and 35267 transitions. [2021-11-12 23:03:20,126 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, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-12 23:03:20,126 INFO L276 IsEmpty]: Start isEmpty. Operand 26638 states and 35267 transitions. [2021-11-12 23:03:20,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-11-12 23:03:20,136 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:03:20,137 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 13, 13, 13, 13, 13, 13, 6, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:03:20,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:03:20,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:03:20,350 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:03:20,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:03:20,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1750841345, now seen corresponding path program 1 times [2021-11-12 23:03:20,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:03:20,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [290395796] [2021-11-12 23:03:20,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:03:20,355 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:03:20,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:03:20,356 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:03:20,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:03:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:03:23,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 2107 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:03:23,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:03:25,622 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2021-11-12 23:03:25,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:03:26,479 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2021-11-12 23:03:26,480 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:03:26,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [290395796] [2021-11-12 23:03:26,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [290395796] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:03:26,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:03:26,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 23:03:26,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415526522] [2021-11-12 23:03:26,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:03:26,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:03:26,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:03:26,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:03:26,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:03:26,481 INFO L87 Difference]: Start difference. First operand 26638 states and 35267 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, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-12 23:03:27,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:03:27,533 INFO L93 Difference]: Finished difference Result 26644 states and 35272 transitions. [2021-11-12 23:03:27,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:03:27,534 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, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 244 [2021-11-12 23:03:27,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:03:27,603 INFO L225 Difference]: With dead ends: 26644 [2021-11-12 23:03:27,603 INFO L226 Difference]: Without dead ends: 26642 [2021-11-12 23:03:27,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 481 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:03:27,615 INFO L933 BasicCegarLoop]: 2705 mSDtfsCounter, 2638 mSDsluCounter, 5391 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2644 SdHoareTripleChecker+Valid, 8096 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.64ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.73ms IncrementalHoareTripleChecker+Time [2021-11-12 23:03:27,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2644 Valid, 8096 Invalid, 20 Unknown, 0 Unchecked, 9.64ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 59.73ms Time] [2021-11-12 23:03:27,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26642 states. [2021-11-12 23:03:29,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26642 to 26642. [2021-11-12 23:03:29,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26642 states, 18064 states have (on average 1.2116364038972542) internal successors, (21887), 18372 states have internal predecessors, (21887), 6639 states have call successors, (6639), 1946 states have call predecessors, (6639), 1936 states have return successors, (6744), 6506 states have call predecessors, (6744), 6636 states have call successors, (6744) [2021-11-12 23:03:29,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26642 states to 26642 states and 35270 transitions. [2021-11-12 23:03:29,452 INFO L78 Accepts]: Start accepts. Automaton has 26642 states and 35270 transitions. Word has length 244 [2021-11-12 23:03:29,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:03:29,453 INFO L470 AbstractCegarLoop]: Abstraction has 26642 states and 35270 transitions. [2021-11-12 23:03:29,454 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, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-12 23:03:29,454 INFO L276 IsEmpty]: Start isEmpty. Operand 26642 states and 35270 transitions. [2021-11-12 23:03:29,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-11-12 23:03:29,465 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:03:29,466 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 13, 13, 13, 13, 13, 13, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:03:29,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:03:29,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:03:29,682 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:03:29,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:03:29,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1334990719, now seen corresponding path program 1 times [2021-11-12 23:03:29,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:03:29,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [587245042] [2021-11-12 23:03:29,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:03:29,686 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:03:29,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:03:29,688 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:03:29,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 23:03:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:03:33,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 2179 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:03:33,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:03:33,953 INFO L134 CoverageAnalysis]: Checked inductivity of 790 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2021-11-12 23:03:33,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:03:34,587 INFO L134 CoverageAnalysis]: Checked inductivity of 790 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 783 trivial. 0 not checked. [2021-11-12 23:03:34,587 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:03:34,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [587245042] [2021-11-12 23:03:34,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [587245042] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:03:34,588 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:03:34,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:03:34,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358602429] [2021-11-12 23:03:34,588 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:03:34,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:03:34,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:03:34,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:03:34,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:03:34,589 INFO L87 Difference]: Start difference. First operand 26642 states and 35270 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 4 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2021-11-12 23:03:37,046 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:03:45,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:03:45,024 INFO L93 Difference]: Finished difference Result 70871 states and 93819 transitions. [2021-11-12 23:03:45,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:03:45,024 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 4 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 240 [2021-11-12 23:03:45,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:03:45,137 INFO L225 Difference]: With dead ends: 70871 [2021-11-12 23:03:45,137 INFO L226 Difference]: Without dead ends: 44260 [2021-11-12 23:03:45,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:03:45,223 INFO L933 BasicCegarLoop]: 5493 mSDtfsCounter, 5409 mSDsluCounter, 4166 mSDsCounter, 0 mSdLazyCounter, 1101 mSolverCounterSat, 560 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7697.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5409 SdHoareTripleChecker+Valid, 9659 SdHoareTripleChecker+Invalid, 1662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.46ms SdHoareTripleChecker+Time, 560 IncrementalHoareTripleChecker+Valid, 1101 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8442.61ms IncrementalHoareTripleChecker+Time [2021-11-12 23:03:45,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5409 Valid, 9659 Invalid, 1662 Unknown, 0 Unchecked, 25.46ms Time], IncrementalHoareTripleChecker [560 Valid, 1101 Invalid, 1 Unknown, 0 Unchecked, 8442.61ms Time] [2021-11-12 23:03:45,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44260 states. [2021-11-12 23:03:47,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44260 to 44152. [2021-11-12 23:03:47,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44152 states, 30232 states have (on average 1.2144747287642232) internal successors, (36716), 30730 states have internal predecessors, (36716), 10698 states have call successors, (10698), 3230 states have call predecessors, (10698), 3219 states have return successors, (10899), 10505 states have call predecessors, (10899), 10695 states have call successors, (10899) [2021-11-12 23:03:47,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44152 states to 44152 states and 58313 transitions. [2021-11-12 23:03:47,938 INFO L78 Accepts]: Start accepts. Automaton has 44152 states and 58313 transitions. Word has length 240 [2021-11-12 23:03:47,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:03:47,939 INFO L470 AbstractCegarLoop]: Abstraction has 44152 states and 58313 transitions. [2021-11-12 23:03:47,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 4 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2021-11-12 23:03:47,940 INFO L276 IsEmpty]: Start isEmpty. Operand 44152 states and 58313 transitions. [2021-11-12 23:03:47,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-11-12 23:03:47,945 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:03:47,946 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 13, 13, 13, 13, 13, 13, 7, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:03:48,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:03:48,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:03:48,162 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:03:48,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:03:48,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1967652362, now seen corresponding path program 1 times [2021-11-12 23:03:48,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:03:48,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1359312673] [2021-11-12 23:03:48,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:03:48,168 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:03:48,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:03:48,169 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:03:48,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 23:03:51,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:03:51,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 2114 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:03:51,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:03:53,683 INFO L134 CoverageAnalysis]: Checked inductivity of 978 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 966 trivial. 0 not checked. [2021-11-12 23:03:53,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:03:54,593 INFO L134 CoverageAnalysis]: Checked inductivity of 978 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 966 trivial. 0 not checked. [2021-11-12 23:03:54,593 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:03:54,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1359312673] [2021-11-12 23:03:54,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1359312673] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:03:54,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:03:54,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 23:03:54,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978296606] [2021-11-12 23:03:54,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:03:54,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:03:54,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:03:54,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:03:54,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:03:54,596 INFO L87 Difference]: Start difference. First operand 44152 states and 58313 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, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-12 23:03:56,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:03:56,964 INFO L93 Difference]: Finished difference Result 44158 states and 58318 transitions. [2021-11-12 23:03:56,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:03:56,964 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, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 249 [2021-11-12 23:03:56,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:03:57,103 INFO L225 Difference]: With dead ends: 44158 [2021-11-12 23:03:57,103 INFO L226 Difference]: Without dead ends: 44156 [2021-11-12 23:03:57,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 491 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:03:57,116 INFO L933 BasicCegarLoop]: 2705 mSDtfsCounter, 2638 mSDsluCounter, 5391 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2643 SdHoareTripleChecker+Valid, 8096 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.16ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 65.80ms IncrementalHoareTripleChecker+Time [2021-11-12 23:03:57,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2643 Valid, 8096 Invalid, 20 Unknown, 0 Unchecked, 13.16ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 65.80ms Time] [2021-11-12 23:03:57,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44156 states. [2021-11-12 23:03:59,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44156 to 44156. [2021-11-12 23:03:59,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44156 states, 30235 states have (on average 1.2144534479907392) internal successors, (36719), 30733 states have internal predecessors, (36719), 10698 states have call successors, (10698), 3231 states have call predecessors, (10698), 3220 states have return successors, (10899), 10505 states have call predecessors, (10899), 10695 states have call successors, (10899) [2021-11-12 23:03:59,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44156 states to 44156 states and 58316 transitions. [2021-11-12 23:03:59,631 INFO L78 Accepts]: Start accepts. Automaton has 44156 states and 58316 transitions. Word has length 249 [2021-11-12 23:03:59,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:03:59,632 INFO L470 AbstractCegarLoop]: Abstraction has 44156 states and 58316 transitions. [2021-11-12 23:03:59,633 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, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-12 23:03:59,633 INFO L276 IsEmpty]: Start isEmpty. Operand 44156 states and 58316 transitions. [2021-11-12 23:03:59,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2021-11-12 23:03:59,638 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:03:59,639 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 13, 13, 13, 13, 13, 13, 8, 7, 7, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:03:59,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 23:03:59,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:03:59,861 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:03:59,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:03:59,862 INFO L85 PathProgramCache]: Analyzing trace with hash 512765281, now seen corresponding path program 1 times [2021-11-12 23:03:59,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:03:59,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1444701698] [2021-11-12 23:03:59,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:03:59,865 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:03:59,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:03:59,866 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:03:59,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 23:04:03,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:04:03,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 2121 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:04:03,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:04:05,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1004 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-12 23:04:05,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:04:06,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1004 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-12 23:04:06,608 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:04:06,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1444701698] [2021-11-12 23:04:06,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1444701698] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:04:06,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:04:06,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 23:04:06,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402909467] [2021-11-12 23:04:06,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:04:06,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:04:06,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:04:06,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:04:06,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:04:06,611 INFO L87 Difference]: Start difference. First operand 44156 states and 58316 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, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-12 23:04:09,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:04:09,122 INFO L93 Difference]: Finished difference Result 44162 states and 58321 transitions. [2021-11-12 23:04:09,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:04:09,122 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, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 254 [2021-11-12 23:04:09,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:04:09,248 INFO L225 Difference]: With dead ends: 44162 [2021-11-12 23:04:09,248 INFO L226 Difference]: Without dead ends: 44160 [2021-11-12 23:04:09,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 501 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:04:09,265 INFO L933 BasicCegarLoop]: 2705 mSDtfsCounter, 2638 mSDsluCounter, 5391 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2642 SdHoareTripleChecker+Valid, 8096 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.75ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.86ms IncrementalHoareTripleChecker+Time [2021-11-12 23:04:09,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2642 Valid, 8096 Invalid, 20 Unknown, 0 Unchecked, 11.75ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 69.86ms Time] [2021-11-12 23:04:09,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44160 states. [2021-11-12 23:04:11,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44160 to 44160. [2021-11-12 23:04:11,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44160 states, 30238 states have (on average 1.21443217143991) internal successors, (36722), 30736 states have internal predecessors, (36722), 10698 states have call successors, (10698), 3232 states have call predecessors, (10698), 3221 states have return successors, (10899), 10505 states have call predecessors, (10899), 10695 states have call successors, (10899) [2021-11-12 23:04:11,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44160 states to 44160 states and 58319 transitions. [2021-11-12 23:04:11,991 INFO L78 Accepts]: Start accepts. Automaton has 44160 states and 58319 transitions. Word has length 254 [2021-11-12 23:04:11,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:04:11,992 INFO L470 AbstractCegarLoop]: Abstraction has 44160 states and 58319 transitions. [2021-11-12 23:04:11,993 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, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-12 23:04:11,993 INFO L276 IsEmpty]: Start isEmpty. Operand 44160 states and 58319 transitions. [2021-11-12 23:04:11,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2021-11-12 23:04:12,000 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:04:12,000 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 13, 13, 13, 13, 13, 13, 9, 8, 8, 6, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:04:12,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-12 23:04:12,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:04:12,222 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:04:12,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:04:12,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1172167363, now seen corresponding path program 1 times [2021-11-12 23:04:12,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:04:12,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [479928395] [2021-11-12 23:04:12,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:04:12,228 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:04:12,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:04:12,229 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:04:12,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-12 23:04:15,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:04:15,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 2177 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-12 23:04:15,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:04:17,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1069 backedges. 142 proven. 3 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2021-11-12 23:04:17,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:04:19,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1069 backedges. 30 proven. 18 refuted. 0 times theorem prover too weak. 1021 trivial. 0 not checked. [2021-11-12 23:04:19,347 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:04:19,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [479928395] [2021-11-12 23:04:19,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [479928395] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:04:19,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1018030416] [2021-11-12 23:04:19,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:04:19,348 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:04:19,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:04:19,354 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:04:19,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adde55c6-a5aa-4bb2-9dd3-08a1c5e6dbb9/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-12 23:04:21,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:04:21,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 2177 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:04:21,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:04:23,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1069 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1053 trivial. 0 not checked. [2021-11-12 23:04:23,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:04:25,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1069 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1053 trivial. 0 not checked. [2021-11-12 23:04:25,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1018030416] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:04:25,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:04:25,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17, 17, 4] total 27 [2021-11-12 23:04:25,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895489356] [2021-11-12 23:04:25,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:04:25,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:04:25,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:04:25,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:04:25,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2021-11-12 23:04:25,043 INFO L87 Difference]: Start difference. First operand 44160 states and 58319 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32)