./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 54849713272284bcfc1d249b79bdfa502d33e8d1537f459c00022c26afd8a94c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:19:08,160 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:19:08,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:19:08,224 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:19:08,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:19:08,229 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:19:08,232 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:19:08,236 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:19:08,239 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:19:08,246 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:19:08,247 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:19:08,249 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:19:08,250 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:19:08,252 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:19:08,255 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:19:08,264 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:19:08,266 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:19:08,267 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:19:08,270 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:19:08,278 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:19:08,281 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:19:08,282 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:19:08,286 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:19:08,288 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:19:08,298 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:19:08,299 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:19:08,300 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:19:08,302 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:19:08,303 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:19:08,305 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:19:08,305 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:19:08,306 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:19:08,309 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:19:08,310 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:19:08,312 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:19:08,312 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:19:08,313 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:19:08,314 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:19:08,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:19:08,315 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:19:08,316 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:19:08,317 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 13:19:08,366 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:19:08,367 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:19:08,370 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:19:08,371 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:19:08,371 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:19:08,371 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:19:08,372 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:19:08,372 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:19:08,379 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:19:08,379 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:19:08,380 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:19:08,381 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:19:08,381 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:19:08,381 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:19:08,382 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:19:08,382 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:19:08,383 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:19:08,383 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:19:08,384 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:19:08,384 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:19:08,384 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:19:08,384 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:19:08,385 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:19:08,385 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:19:08,385 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:19:08,385 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:19:08,386 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:19:08,386 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:19:08,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:19:08,388 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:19:08,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:19:08,389 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:19:08,389 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:19:08,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:19:08,390 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:19:08,390 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:19:08,390 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:19:08,391 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_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54849713272284bcfc1d249b79bdfa502d33e8d1537f459c00022c26afd8a94c [2021-11-19 13:19:08,741 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:19:08,771 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:19:08,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:19:08,775 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:19:08,776 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:19:08,778 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i [2021-11-19 13:19:08,847 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/data/589645490/3914bd862e46444881cbf5144fa69f54/FLAG03eec8046 [2021-11-19 13:19:09,897 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:19:09,898 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i [2021-11-19 13:19:09,987 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/data/589645490/3914bd862e46444881cbf5144fa69f54/FLAG03eec8046 [2021-11-19 13:19:10,184 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/data/589645490/3914bd862e46444881cbf5144fa69f54 [2021-11-19 13:19:10,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:19:10,187 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:19:10,189 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:19:10,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:19:10,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:19:10,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:19:10" (1/1) ... [2021-11-19 13:19:10,194 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@84aff46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:10, skipping insertion in model container [2021-11-19 13:19:10,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:19:10" (1/1) ... [2021-11-19 13:19:10,202 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:19:10,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:19:13,301 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 13:19:13,343 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 13:19:13,344 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 13:19:13,746 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 13:19:13,931 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 13:19:13,943 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 13:19:16,266 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i[508632,508645] [2021-11-19 13:19:16,269 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i[508801,508814] [2021-11-19 13:19:16,270 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i[508968,508981] [2021-11-19 13:19:16,271 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i[509136,509149] [2021-11-19 13:19:16,322 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:19:16,393 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 13:19:16,394 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@79051236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:16, skipping insertion in model container [2021-11-19 13:19:16,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:19:16,396 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 13:19:16,399 INFO L158 Benchmark]: Toolchain (without parser) took 6209.80ms. Allocated memory was 86.0MB in the beginning and 159.4MB in the end (delta: 73.4MB). Free memory was 45.3MB in the beginning and 73.0MB in the end (delta: -27.7MB). Peak memory consumption was 60.6MB. Max. memory is 16.1GB. [2021-11-19 13:19:16,400 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 86.0MB. Free memory was 65.4MB in the beginning and 65.4MB in the end (delta: 39.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:19:16,402 INFO L158 Benchmark]: CACSL2BoogieTranslator took 6207.25ms. Allocated memory was 86.0MB in the beginning and 159.4MB in the end (delta: 73.4MB). Free memory was 45.1MB in the beginning and 73.0MB in the end (delta: -27.8MB). Peak memory consumption was 60.6MB. Max. memory is 16.1GB. [2021-11-19 13:19:16,405 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 86.0MB. Free memory was 65.4MB in the beginning and 65.4MB in the end (delta: 39.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 6207.25ms. Allocated memory was 86.0MB in the beginning and 159.4MB in the end (delta: 73.4MB). Free memory was 45.1MB in the beginning and 73.0MB in the end (delta: -27.8MB). Peak memory consumption was 60.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7067]: 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_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 54849713272284bcfc1d249b79bdfa502d33e8d1537f459c00022c26afd8a94c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:19:18,799 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:19:18,801 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:19:18,848 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:19:18,849 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:19:18,854 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:19:18,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:19:18,866 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:19:18,870 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:19:18,881 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:19:18,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:19:18,884 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:19:18,885 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:19:18,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:19:18,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:19:18,892 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:19:18,897 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:19:18,899 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:19:18,901 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:19:18,903 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:19:18,910 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:19:18,912 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:19:18,915 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:19:18,917 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:19:18,925 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:19:18,926 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:19:18,926 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:19:18,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:19:18,929 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:19:18,931 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:19:18,932 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:19:18,933 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:19:18,935 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:19:18,936 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:19:18,938 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:19:18,938 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:19:18,939 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:19:18,940 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:19:18,940 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:19:18,942 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:19:18,943 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:19:18,944 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 13:19:18,998 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:19:18,998 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:19:19,002 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:19:19,002 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:19:19,003 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:19:19,003 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:19:19,003 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:19:19,003 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:19:19,004 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:19:19,004 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:19:19,007 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:19:19,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:19:19,007 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:19:19,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:19:19,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:19:19,008 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:19:19,008 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 13:19:19,008 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 13:19:19,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:19:19,009 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:19:19,009 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:19:19,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:19:19,010 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 13:19:19,011 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:19:19,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:19:19,012 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:19:19,012 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:19:19,012 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:19:19,012 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 13:19:19,013 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 13:19:19,013 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:19:19,013 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:19:19,013 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:19:19,013 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_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54849713272284bcfc1d249b79bdfa502d33e8d1537f459c00022c26afd8a94c [2021-11-19 13:19:19,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:19:19,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:19:19,436 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:19:19,437 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:19:19,438 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:19:19,440 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i [2021-11-19 13:19:19,515 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/data/d697ac293/9243215fa01f41bbb4aa10142d8a717b/FLAGc49257576 [2021-11-19 13:19:20,661 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:19:20,662 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i [2021-11-19 13:19:20,748 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/data/d697ac293/9243215fa01f41bbb4aa10142d8a717b/FLAGc49257576 [2021-11-19 13:19:20,914 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/data/d697ac293/9243215fa01f41bbb4aa10142d8a717b [2021-11-19 13:19:20,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:19:20,921 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:19:20,923 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:19:20,923 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:19:20,926 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:19:20,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:19:20" (1/1) ... [2021-11-19 13:19:20,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@325fbee8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:20, skipping insertion in model container [2021-11-19 13:19:20,930 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:19:20" (1/1) ... [2021-11-19 13:19:20,938 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:19:21,201 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:19:27,184 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i[508632,508645] [2021-11-19 13:19:27,188 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i[508801,508814] [2021-11-19 13:19:27,189 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i[508968,508981] [2021-11-19 13:19:27,189 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i[509136,509149] [2021-11-19 13:19:27,231 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:19:27,306 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 13:19:27,424 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:19:28,074 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i[508632,508645] [2021-11-19 13:19:28,075 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i[508801,508814] [2021-11-19 13:19:28,075 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i[508968,508981] [2021-11-19 13:19:28,076 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i[509136,509149] [2021-11-19 13:19:28,086 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:19:28,116 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:19:28,898 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i[508632,508645] [2021-11-19 13:19:28,898 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i[508801,508814] [2021-11-19 13:19:28,899 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i[508968,508981] [2021-11-19 13:19:28,899 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i[509136,509149] [2021-11-19 13:19:28,912 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:19:29,391 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:19:29,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:29 WrapperNode [2021-11-19 13:19:29,392 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:19:29,394 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:19:29,395 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:19:29,395 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:19:29,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:29" (1/1) ... [2021-11-19 13:19:29,720 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:29" (1/1) ... [2021-11-19 13:19:30,199 INFO L137 Inliner]: procedures = 693, calls = 4011, calls flagged for inlining = 356, calls inlined = 330, statements flattened = 9692 [2021-11-19 13:19:30,200 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:19:30,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:19:30,203 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:19:30,203 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:19:30,215 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:29" (1/1) ... [2021-11-19 13:19:30,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:29" (1/1) ... [2021-11-19 13:19:30,282 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:29" (1/1) ... [2021-11-19 13:19:30,283 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:29" (1/1) ... [2021-11-19 13:19:30,770 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:29" (1/1) ... [2021-11-19 13:19:30,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:29" (1/1) ... [2021-11-19 13:19:30,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:29" (1/1) ... [2021-11-19 13:19:30,941 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:19:30,944 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:19:30,944 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:19:30,944 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:19:30,945 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:29" (1/1) ... [2021-11-19 13:19:30,953 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:19:30,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:19:30,984 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:19:31,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:19:31,043 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_93 [2021-11-19 13:19:31,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_93 [2021-11-19 13:19:31,044 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-19 13:19:31,044 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-19 13:19:31,044 INFO L130 BoogieDeclarations]: Found specification of procedure ipv6_hdr [2021-11-19 13:19:31,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ipv6_hdr [2021-11-19 13:19:31,045 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_read_phy_core [2021-11-19 13:19:31,045 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_read_phy_core [2021-11-19 13:19:31,045 INFO L130 BoogieDeclarations]: Found specification of procedure device_set_wakeup_enable [2021-11-19 13:19:31,045 INFO L138 BoogieDeclarations]: Found implementation of procedure device_set_wakeup_enable [2021-11-19 13:19:31,046 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_post_phy_linkchg [2021-11-19 13:19:31,046 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_post_phy_linkchg [2021-11-19 13:19:31,046 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-19 13:19:31,046 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-19 13:19:31,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-19 13:19:31,047 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-19 13:19:31,047 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_80 [2021-11-19 13:19:31,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_80 [2021-11-19 13:19:31,047 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-11-19 13:19:31,047 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-11-19 13:19:31,048 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-19 13:19:31,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-19 13:19:31,048 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_clean_rx_ring [2021-11-19 13:19:31,048 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_clean_rx_ring [2021-11-19 13:19:31,048 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-19 13:19:31,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-19 13:19:31,050 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-19 13:19:31,050 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-19 13:19:31,050 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-19 13:19:31,050 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-19 13:19:31,051 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-19 13:19:31,051 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-19 13:19:31,051 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_read_current_addr [2021-11-19 13:19:31,051 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_read_current_addr [2021-11-19 13:19:31,051 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-19 13:19:31,052 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-19 13:19:31,052 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2021-11-19 13:19:31,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2021-11-19 13:19:31,053 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_reset_mac [2021-11-19 13:19:31,053 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_reset_mac [2021-11-19 13:19:31,053 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_irq_disable [2021-11-19 13:19:31,054 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_irq_disable [2021-11-19 13:19:31,055 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_stop_phy_polling [2021-11-19 13:19:31,055 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_stop_phy_polling [2021-11-19 13:19:31,056 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-19 13:19:31,056 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-19 13:19:31,056 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-19 13:19:31,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-19 13:19:31,057 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-19 13:19:31,057 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-19 13:19:31,057 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-19 13:19:31,057 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-19 13:19:31,058 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-19 13:19:31,058 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-19 13:19:31,058 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-19 13:19:31,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-19 13:19:31,059 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-19 13:19:31,059 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-19 13:19:31,059 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-19 13:19:31,060 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-19 13:19:31,060 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2021-11-19 13:19:31,061 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2021-11-19 13:19:31,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 13:19:31,061 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-19 13:19:31,061 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-19 13:19:31,062 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_get_speed_and_duplex [2021-11-19 13:19:31,062 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_get_speed_and_duplex [2021-11-19 13:19:31,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-19 13:19:31,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 13:19:31,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 13:19:31,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 13:19:31,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_mdio_lock_of_atl1c_adapter [2021-11-19 13:19:31,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_mdio_lock_of_atl1c_adapter [2021-11-19 13:19:31,064 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2021-11-19 13:19:31,064 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2021-11-19 13:19:31,064 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_close [2021-11-19 13:19:31,065 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_close [2021-11-19 13:19:31,065 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-19 13:19:31,065 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-19 13:19:31,065 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_write_phy_reg [2021-11-19 13:19:31,066 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_write_phy_reg [2021-11-19 13:19:31,067 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_phy_init [2021-11-19 13:19:31,067 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_phy_init [2021-11-19 13:19:31,067 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_read_phy_dbg [2021-11-19 13:19:31,067 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_read_phy_dbg [2021-11-19 13:19:31,067 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_get_regs_len [2021-11-19 13:19:31,068 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_get_regs_len [2021-11-19 13:19:31,068 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-19 13:19:31,068 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-19 13:19:31,068 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-19 13:19:31,069 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-19 13:19:31,069 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_free_ring_resources [2021-11-19 13:19:31,069 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_free_ring_resources [2021-11-19 13:19:31,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-19 13:19:31,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-19 13:19:31,070 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~C_ULONG~X~C_INT~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-19 13:19:31,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~C_ULONG~X~C_INT~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-19 13:19:31,070 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-19 13:19:31,071 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-19 13:19:31,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-19 13:19:31,071 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-19 13:19:31,071 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-19 13:19:31,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-19 13:19:31,074 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2021-11-19 13:19:31,078 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2021-11-19 13:19:31,078 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-19 13:19:31,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-19 13:19:31,078 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-19 13:19:31,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-19 13:19:31,080 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-19 13:19:31,081 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-19 13:19:31,081 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_set_multi [2021-11-19 13:19:31,082 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_set_multi [2021-11-19 13:19:31,082 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-19 13:19:31,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-19 13:19:31,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 13:19:31,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:19:31,083 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-19 13:19:31,083 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-19 13:19:31,083 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-19 13:19:31,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-19 13:19:31,084 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-19 13:19:31,084 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-19 13:19:31,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 13:19:31,084 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_start_phy_polling [2021-11-19 13:19:31,084 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_start_phy_polling [2021-11-19 13:19:31,084 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2021-11-19 13:19:31,085 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2021-11-19 13:19:31,085 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-19 13:19:31,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-19 13:19:31,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-19 13:19:31,085 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 13:19:31,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 13:19:31,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-19 13:19:31,086 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2021-11-19 13:19:31,086 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2021-11-19 13:19:31,086 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_gso [2021-11-19 13:19:31,086 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_gso [2021-11-19 13:19:31,086 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~X~$Pointer$~TO~VOID [2021-11-19 13:19:31,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~X~$Pointer$~TO~VOID [2021-11-19 13:19:31,086 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_write_phy_core [2021-11-19 13:19:31,087 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_write_phy_core [2021-11-19 13:19:31,087 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_wait_until_idle [2021-11-19 13:19:31,087 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_wait_until_idle [2021-11-19 13:19:31,087 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-19 13:19:31,087 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-19 13:19:31,087 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2021-11-19 13:19:31,087 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2021-11-19 13:19:31,088 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-19 13:19:31,088 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-19 13:19:31,088 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_check_link_status [2021-11-19 13:19:31,088 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_check_link_status [2021-11-19 13:19:31,088 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-19 13:19:31,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-19 13:19:31,089 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_alloc_rx_buffer [2021-11-19 13:19:31,089 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_alloc_rx_buffer [2021-11-19 13:19:31,089 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_mdio_lock_of_atl1c_adapter [2021-11-19 13:19:31,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_mdio_lock_of_atl1c_adapter [2021-11-19 13:19:31,089 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_io_resume [2021-11-19 13:19:31,089 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_io_resume [2021-11-19 13:19:31,089 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_write_phy_dbg [2021-11-19 13:19:31,090 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_write_phy_dbg [2021-11-19 13:19:31,090 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_wait_mdio_idle [2021-11-19 13:19:31,090 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_wait_mdio_idle [2021-11-19 13:19:31,090 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-19 13:19:31,090 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-19 13:19:31,090 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-19 13:19:31,091 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-19 13:19:31,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-19 13:19:31,091 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_vlan_mode [2021-11-19 13:19:31,091 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_vlan_mode [2021-11-19 13:19:31,091 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_get_tx_buffer [2021-11-19 13:19:31,091 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_get_tx_buffer [2021-11-19 13:19:31,092 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_down [2021-11-19 13:19:31,092 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_down [2021-11-19 13:19:31,092 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_suspend [2021-11-19 13:19:31,092 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_suspend [2021-11-19 13:19:31,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:19:31,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:19:31,093 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2021-11-19 13:19:31,093 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2021-11-19 13:19:31,093 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-11-19 13:19:31,093 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-11-19 13:19:31,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 13:19:31,094 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-19 13:19:31,094 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-19 13:19:31,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 13:19:31,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 13:19:31,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-19 13:19:31,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-19 13:19:31,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-19 13:19:31,095 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-19 13:19:31,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-19 13:19:31,095 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-19 13:19:31,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-19 13:19:31,096 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-19 13:19:31,096 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-19 13:19:31,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_try [2021-11-19 13:19:31,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_try [2021-11-19 13:19:31,097 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_tx_timeout [2021-11-19 13:19:31,097 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_tx_timeout [2021-11-19 13:19:31,097 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2021-11-19 13:19:31,097 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2021-11-19 13:19:31,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-19 13:19:31,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-19 13:19:31,098 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_get_tpd [2021-11-19 13:19:31,098 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_get_tpd [2021-11-19 13:19:31,098 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_hw_set_mac_addr [2021-11-19 13:19:31,098 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_hw_set_mac_addr [2021-11-19 13:19:31,099 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-19 13:19:31,099 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-19 13:19:31,099 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2021-11-19 13:19:31,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2021-11-19 13:19:31,099 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-11-19 13:19:31,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-11-19 13:19:31,100 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_restart_autoneg [2021-11-19 13:19:31,100 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_restart_autoneg [2021-11-19 13:19:31,100 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_set_rxbufsize [2021-11-19 13:19:31,100 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_set_rxbufsize [2021-11-19 13:19:31,100 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-19 13:19:31,101 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-19 13:19:31,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 13:19:31,101 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 13:19:31,101 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_free_irq [2021-11-19 13:19:31,101 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_free_irq [2021-11-19 13:19:31,102 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2021-11-19 13:19:31,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2021-11-19 13:19:31,102 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_write_phy_ext [2021-11-19 13:19:31,102 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_write_phy_ext [2021-11-19 13:19:31,102 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2021-11-19 13:19:31,103 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2021-11-19 13:19:31,103 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-19 13:19:31,103 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-19 13:19:31,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 13:19:31,103 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2021-11-19 13:19:31,103 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2021-11-19 13:19:31,104 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_nway_reset [2021-11-19 13:19:31,104 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_nway_reset [2021-11-19 13:19:31,104 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_reset_dma_ring [2021-11-19 13:19:31,104 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_reset_dma_ring [2021-11-19 13:19:31,104 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-19 13:19:31,105 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-19 13:19:31,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 13:19:31,105 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_irq_enable [2021-11-19 13:19:31,105 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_irq_enable [2021-11-19 13:19:31,105 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-19 13:19:31,106 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-19 13:19:31,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 13:19:31,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 13:19:31,106 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_get_eeprom_len [2021-11-19 13:19:31,106 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_get_eeprom_len [2021-11-19 13:19:31,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-19 13:19:31,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 13:19:31,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 13:19:31,107 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2021-11-19 13:19:31,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2021-11-19 13:19:31,107 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_check_eeprom_exist [2021-11-19 13:19:31,108 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_check_eeprom_exist [2021-11-19 13:19:31,108 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-19 13:19:31,108 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-19 13:19:31,108 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-19 13:19:31,108 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-19 13:19:31,109 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_netpoll [2021-11-19 13:19:31,109 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_netpoll [2021-11-19 13:19:31,109 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-19 13:19:31,109 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-19 13:19:31,109 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-19 13:19:31,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-19 13:19:31,110 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-19 13:19:31,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-19 13:19:31,110 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_configure [2021-11-19 13:19:31,110 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_configure [2021-11-19 13:19:31,110 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2021-11-19 13:19:31,111 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2021-11-19 13:19:31,111 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_85 [2021-11-19 13:19:31,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_85 [2021-11-19 13:19:31,111 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_clean_tx_ring [2021-11-19 13:19:31,111 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_clean_tx_ring [2021-11-19 13:19:31,112 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_phy_reset [2021-11-19 13:19:31,112 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_phy_reset [2021-11-19 13:19:31,112 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_open [2021-11-19 13:19:31,112 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_open [2021-11-19 13:19:31,112 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-19 13:19:31,112 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-19 13:19:31,113 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-19 13:19:31,113 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-19 13:19:31,113 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2021-11-19 13:19:31,113 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2021-11-19 13:19:31,113 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_offset [2021-11-19 13:19:31,113 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_offset [2021-11-19 13:19:31,114 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2021-11-19 13:19:31,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2021-11-19 13:19:31,114 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_intr [2021-11-19 13:19:31,114 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_intr [2021-11-19 13:19:31,114 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-19 13:19:31,115 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-19 13:19:31,115 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_power_saving [2021-11-19 13:19:31,115 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_power_saving [2021-11-19 13:19:31,115 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_phy_setup_adv [2021-11-19 13:19:31,115 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_phy_setup_adv [2021-11-19 13:19:31,116 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2021-11-19 13:19:31,116 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2021-11-19 13:19:31,116 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-19 13:19:31,116 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-19 13:19:31,116 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_clean_buffer [2021-11-19 13:19:31,116 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_clean_buffer [2021-11-19 13:19:31,117 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_remove [2021-11-19 13:19:31,117 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_remove [2021-11-19 13:19:31,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-19 13:19:31,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-19 13:19:31,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-19 13:19:31,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-19 13:19:31,118 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-19 13:19:31,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-19 13:19:31,118 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_86 [2021-11-19 13:19:31,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_86 [2021-11-19 13:19:31,118 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-19 13:19:31,119 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-19 13:19:31,119 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-19 13:19:31,119 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-19 13:19:31,119 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_up [2021-11-19 13:19:31,119 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_up [2021-11-19 13:19:31,119 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-19 13:19:31,120 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-19 13:19:31,120 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_disable_l0s_l1 [2021-11-19 13:19:31,120 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_disable_l0s_l1 [2021-11-19 13:19:31,120 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_resume [2021-11-19 13:19:31,120 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_resume [2021-11-19 13:19:31,120 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdrlen [2021-11-19 13:19:31,121 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdrlen [2021-11-19 13:19:31,121 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_reset_pcie [2021-11-19 13:19:31,121 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_reset_pcie [2021-11-19 13:19:31,121 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-19 13:19:31,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-19 13:19:31,122 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-19 13:19:31,122 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-19 13:19:31,122 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_shutdown [2021-11-19 13:19:31,122 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_shutdown [2021-11-19 13:19:31,122 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_set_aspm [2021-11-19 13:19:31,122 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_set_aspm [2021-11-19 13:19:31,123 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2021-11-19 13:19:31,123 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2021-11-19 13:19:31,123 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2021-11-19 13:19:31,123 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2021-11-19 13:19:31,123 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-19 13:19:31,124 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-19 13:19:31,124 INFO L130 BoogieDeclarations]: Found specification of procedure atl1c_read_phy_reg [2021-11-19 13:19:31,124 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1c_read_phy_reg [2021-11-19 13:19:31,124 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-19 13:19:31,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-19 13:19:32,844 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:19:32,849 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:19:33,904 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-19 13:20:36,533 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:20:36,567 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:20:36,568 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 13:20:36,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:20:36 BoogieIcfgContainer [2021-11-19 13:20:36,577 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:20:36,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:20:36,579 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:20:36,582 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:20:36,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:19:20" (1/3) ... [2021-11-19 13:20:36,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e54637d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:20:36, skipping insertion in model container [2021-11-19 13:20:36,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:29" (2/3) ... [2021-11-19 13:20:36,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e54637d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:20:36, skipping insertion in model container [2021-11-19 13:20:36,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:20:36" (3/3) ... [2021-11-19 13:20:36,585 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1c-atl1c.cil.i [2021-11-19 13:20:36,590 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:20:36,591 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-19 13:20:36,665 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:20:36,671 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 13:20:36,672 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-19 13:20:36,769 INFO L276 IsEmpty]: Start isEmpty. Operand has 3738 states, 2494 states have (on average 1.2489975942261426) internal successors, (3115), 2549 states have internal predecessors, (3115), 1081 states have call successors, (1081), 159 states have call predecessors, (1081), 158 states have return successors, (1074), 1065 states have call predecessors, (1074), 1074 states have call successors, (1074) [2021-11-19 13:20:36,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-19 13:20:36,775 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:20:36,775 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-19 13:20:36,776 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:20:36,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:20:36,781 INFO L85 PathProgramCache]: Analyzing trace with hash 641900107, now seen corresponding path program 1 times [2021-11-19 13:20:36,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:20:36,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2076546055] [2021-11-19 13:20:36,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:20:36,798 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:20:36,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:20:36,805 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:20:36,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 13:20:38,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:20:38,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 1318 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:20:38,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:20:39,747 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 13:20:39,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:20:40,272 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 13:20:40,273 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:20:40,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2076546055] [2021-11-19 13:20:40,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2076546055] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:20:40,274 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:20:40,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 7 [2021-11-19 13:20:40,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279216087] [2021-11-19 13:20:40,276 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:20:40,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:20:40,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:20:40,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:20:40,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:20:40,334 INFO L87 Difference]: Start difference. First operand has 3738 states, 2494 states have (on average 1.2489975942261426) internal successors, (3115), 2549 states have internal predecessors, (3115), 1081 states have call successors, (1081), 159 states have call predecessors, (1081), 158 states have return successors, (1074), 1065 states have call predecessors, (1074), 1074 states have call successors, (1074) Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 13:20:41,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:20:41,287 INFO L93 Difference]: Finished difference Result 7449 states and 10625 transitions. [2021-11-19 13:20:41,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:20:41,291 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 48 [2021-11-19 13:20:41,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:20:41,351 INFO L225 Difference]: With dead ends: 7449 [2021-11-19 13:20:41,351 INFO L226 Difference]: Without dead ends: 3723 [2021-11-19 13:20:41,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:20:41,385 INFO L933 BasicCegarLoop]: 5246 mSDtfsCounter, 5209 mSDsluCounter, 15720 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5225 SdHoareTripleChecker+Valid, 20966 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:20:41,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5225 Valid, 20966 Invalid, 28 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:20:41,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3723 states. [2021-11-19 13:20:41,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3723 to 3723. [2021-11-19 13:20:41,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3723 states, 2487 states have (on average 1.241254523522316) internal successors, (3087), 2538 states have internal predecessors, (3087), 1074 states have call successors, (1074), 159 states have call predecessors, (1074), 158 states have return successors, (1071), 1062 states have call predecessors, (1071), 1071 states have call successors, (1071) [2021-11-19 13:20:41,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3723 states to 3723 states and 5232 transitions. [2021-11-19 13:20:41,968 INFO L78 Accepts]: Start accepts. Automaton has 3723 states and 5232 transitions. Word has length 48 [2021-11-19 13:20:41,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:20:41,971 INFO L470 AbstractCegarLoop]: Abstraction has 3723 states and 5232 transitions. [2021-11-19 13:20:41,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 13:20:41,971 INFO L276 IsEmpty]: Start isEmpty. Operand 3723 states and 5232 transitions. [2021-11-19 13:20:41,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-19 13:20:41,977 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:20:41,977 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-19 13:20:42,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 13:20:42,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:20:42,190 INFO L402 AbstractCegarLoop]: === Iteration 2 === 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:20:42,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:20:42,193 INFO L85 PathProgramCache]: Analyzing trace with hash 802517195, now seen corresponding path program 1 times [2021-11-19 13:20:42,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:20:42,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [174829492] [2021-11-19 13:20:42,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:20:42,195 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:20:42,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:20:42,196 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:20:42,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 13:20:44,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:20:44,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 1325 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:20:44,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:20:45,129 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 13:20:45,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:20:45,663 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 13:20:45,663 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:20:45,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [174829492] [2021-11-19 13:20:45,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [174829492] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:20:45,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:20:45,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 13:20:45,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366045763] [2021-11-19 13:20:45,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:20:45,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:20:45,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:20:45,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:20:45,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:20:45,667 INFO L87 Difference]: Start difference. First operand 3723 states and 5232 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 13:20:46,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:20:46,310 INFO L93 Difference]: Finished difference Result 3729 states and 5237 transitions. [2021-11-19 13:20:46,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:20:46,311 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 53 [2021-11-19 13:20:46,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:20:46,352 INFO L225 Difference]: With dead ends: 3729 [2021-11-19 13:20:46,352 INFO L226 Difference]: Without dead ends: 3727 [2021-11-19 13:20:46,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:20:46,360 INFO L933 BasicCegarLoop]: 5229 mSDtfsCounter, 5197 mSDsluCounter, 10435 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5211 SdHoareTripleChecker+Valid, 15664 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:20:46,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5211 Valid, 15664 Invalid, 24 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:20:46,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3727 states. [2021-11-19 13:20:46,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3727 to 3727. [2021-11-19 13:20:46,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3727 states, 2490 states have (on average 1.2409638554216869) internal successors, (3090), 2541 states have internal predecessors, (3090), 1074 states have call successors, (1074), 160 states have call predecessors, (1074), 159 states have return successors, (1071), 1062 states have call predecessors, (1071), 1071 states have call successors, (1071) [2021-11-19 13:20:46,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3727 states to 3727 states and 5235 transitions. [2021-11-19 13:20:46,725 INFO L78 Accepts]: Start accepts. Automaton has 3727 states and 5235 transitions. Word has length 53 [2021-11-19 13:20:46,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:20:46,726 INFO L470 AbstractCegarLoop]: Abstraction has 3727 states and 5235 transitions. [2021-11-19 13:20:46,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 13:20:46,727 INFO L276 IsEmpty]: Start isEmpty. Operand 3727 states and 5235 transitions. [2021-11-19 13:20:46,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-19 13:20:46,738 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:20:46,739 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:20:46,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 13:20:46,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:20:46,954 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:20:46,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:20:46,954 INFO L85 PathProgramCache]: Analyzing trace with hash -2051062261, now seen corresponding path program 1 times [2021-11-19 13:20:46,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:20:46,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1608868484] [2021-11-19 13:20:46,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:20:46,957 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:20:46,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:20:46,959 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:20:46,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 13:20:48,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:20:49,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 1332 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:20:49,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:20:49,876 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-19 13:20:49,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:20:50,388 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-19 13:20:50,388 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:20:50,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1608868484] [2021-11-19 13:20:50,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1608868484] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:20:50,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:20:50,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 13:20:50,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978545970] [2021-11-19 13:20:50,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:20:50,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:20:50,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:20:50,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:20:50,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:20:50,391 INFO L87 Difference]: Start difference. First operand 3727 states and 5235 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-19 13:20:51,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:20:51,216 INFO L93 Difference]: Finished difference Result 3733 states and 5240 transitions. [2021-11-19 13:20:51,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:20:51,217 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 58 [2021-11-19 13:20:51,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:20:51,262 INFO L225 Difference]: With dead ends: 3733 [2021-11-19 13:20:51,262 INFO L226 Difference]: Without dead ends: 3731 [2021-11-19 13:20:51,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:20:51,275 INFO L933 BasicCegarLoop]: 5229 mSDtfsCounter, 5197 mSDsluCounter, 10435 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5210 SdHoareTripleChecker+Valid, 15664 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:20:51,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5210 Valid, 15664 Invalid, 24 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:20:51,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3731 states. [2021-11-19 13:20:51,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3731 to 3731. [2021-11-19 13:20:51,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3731 states, 2493 states have (on average 1.2406738868832732) internal successors, (3093), 2544 states have internal predecessors, (3093), 1074 states have call successors, (1074), 161 states have call predecessors, (1074), 160 states have return successors, (1071), 1062 states have call predecessors, (1071), 1071 states have call successors, (1071) [2021-11-19 13:20:51,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3731 states to 3731 states and 5238 transitions. [2021-11-19 13:20:51,714 INFO L78 Accepts]: Start accepts. Automaton has 3731 states and 5238 transitions. Word has length 58 [2021-11-19 13:20:51,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:20:51,715 INFO L470 AbstractCegarLoop]: Abstraction has 3731 states and 5238 transitions. [2021-11-19 13:20:51,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-19 13:20:51,716 INFO L276 IsEmpty]: Start isEmpty. Operand 3731 states and 5238 transitions. [2021-11-19 13:20:51,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-19 13:20:51,717 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:20:51,718 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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] [2021-11-19 13:20:51,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 13:20:51,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:20:51,936 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:20:51,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:20:51,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1594216587, now seen corresponding path program 1 times [2021-11-19 13:20:51,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:20:51,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1955014519] [2021-11-19 13:20:51,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:20:51,939 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:20:51,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:20:51,941 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:20:51,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 13:20:53,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:20:54,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 1339 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:20:54,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:20:54,890 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-19 13:20:54,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:20:55,373 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-19 13:20:55,373 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:20:55,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1955014519] [2021-11-19 13:20:55,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1955014519] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:20:55,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:20:55,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 13:20:55,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121369954] [2021-11-19 13:20:55,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:20:55,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:20:55,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:20:55,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:20:55,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:20:55,375 INFO L87 Difference]: Start difference. First operand 3731 states and 5238 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-19 13:20:56,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:20:56,012 INFO L93 Difference]: Finished difference Result 3737 states and 5243 transitions. [2021-11-19 13:20:56,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:20:56,013 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 63 [2021-11-19 13:20:56,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:20:56,054 INFO L225 Difference]: With dead ends: 3737 [2021-11-19 13:20:56,055 INFO L226 Difference]: Without dead ends: 3735 [2021-11-19 13:20:56,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:20:56,061 INFO L933 BasicCegarLoop]: 5229 mSDtfsCounter, 5197 mSDsluCounter, 10435 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5209 SdHoareTripleChecker+Valid, 15664 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:20:56,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5209 Valid, 15664 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:20:56,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3735 states. [2021-11-19 13:20:56,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3735 to 3735. [2021-11-19 13:20:56,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3735 states, 2496 states have (on average 1.2403846153846154) internal successors, (3096), 2547 states have internal predecessors, (3096), 1074 states have call successors, (1074), 162 states have call predecessors, (1074), 161 states have return successors, (1071), 1062 states have call predecessors, (1071), 1071 states have call successors, (1071) [2021-11-19 13:20:56,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3735 states to 3735 states and 5241 transitions. [2021-11-19 13:20:56,430 INFO L78 Accepts]: Start accepts. Automaton has 3735 states and 5241 transitions. Word has length 63 [2021-11-19 13:20:56,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:20:56,431 INFO L470 AbstractCegarLoop]: Abstraction has 3735 states and 5241 transitions. [2021-11-19 13:20:56,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-19 13:20:56,431 INFO L276 IsEmpty]: Start isEmpty. Operand 3735 states and 5241 transitions. [2021-11-19 13:20:56,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-19 13:20:56,433 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:20:56,433 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 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] [2021-11-19 13:20:56,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 13:20:56,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:20:56,658 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:20:56,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:20:56,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1194398261, now seen corresponding path program 1 times [2021-11-19 13:20:56,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:20:56,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [622904595] [2021-11-19 13:20:56,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:20:56,661 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:20:56,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:20:56,662 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:20:56,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 13:20:58,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:20:58,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 1346 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:20:58,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:20:59,276 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-19 13:20:59,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:20:59,761 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-19 13:20:59,761 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:20:59,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [622904595] [2021-11-19 13:20:59,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [622904595] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:20:59,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:20:59,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 13:20:59,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252185582] [2021-11-19 13:20:59,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:20:59,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:20:59,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:20:59,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:20:59,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:20:59,763 INFO L87 Difference]: Start difference. First operand 3735 states and 5241 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 13:21:00,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:21:00,328 INFO L93 Difference]: Finished difference Result 3741 states and 5246 transitions. [2021-11-19 13:21:00,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:21:00,329 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 68 [2021-11-19 13:21:00,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:21:00,361 INFO L225 Difference]: With dead ends: 3741 [2021-11-19 13:21:00,362 INFO L226 Difference]: Without dead ends: 3739 [2021-11-19 13:21:00,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:21:00,366 INFO L933 BasicCegarLoop]: 5229 mSDtfsCounter, 5197 mSDsluCounter, 10435 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5208 SdHoareTripleChecker+Valid, 15664 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:21:00,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5208 Valid, 15664 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:21:00,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3739 states. [2021-11-19 13:21:00,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3739 to 3739. [2021-11-19 13:21:00,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3739 states, 2499 states have (on average 1.240096038415366) internal successors, (3099), 2550 states have internal predecessors, (3099), 1074 states have call successors, (1074), 163 states have call predecessors, (1074), 162 states have return successors, (1071), 1062 states have call predecessors, (1071), 1071 states have call successors, (1071) [2021-11-19 13:21:00,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3739 states to 3739 states and 5244 transitions. [2021-11-19 13:21:00,683 INFO L78 Accepts]: Start accepts. Automaton has 3739 states and 5244 transitions. Word has length 68 [2021-11-19 13:21:00,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:21:00,684 INFO L470 AbstractCegarLoop]: Abstraction has 3739 states and 5244 transitions. [2021-11-19 13:21:00,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 13:21:00,685 INFO L276 IsEmpty]: Start isEmpty. Operand 3739 states and 5244 transitions. [2021-11-19 13:21:00,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-19 13:21:00,686 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:21:00,687 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:21:00,728 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-19 13:21:00,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:21:00,908 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:21:00,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:21:00,908 INFO L85 PathProgramCache]: Analyzing trace with hash 541092142, now seen corresponding path program 1 times [2021-11-19 13:21:00,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:21:00,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [339529646] [2021-11-19 13:21:00,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:21:00,910 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:21:00,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:21:00,911 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:21:00,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 13:21:02,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:21:02,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-19 13:21:02,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:21:04,276 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-11-19 13:21:04,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:21:05,792 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 13:21:05,792 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:21:05,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [339529646] [2021-11-19 13:21:05,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [339529646] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:21:05,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1510414738] [2021-11-19 13:21:05,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:21:05,793 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:21:05,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:21:05,794 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:21:05,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-19 13:21:07,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:21:07,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:21:07,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:21:08,677 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-19 13:21:08,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:21:09,565 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-19 13:21:09,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1510414738] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:21:09,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 13:21:09,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15, 15, 4] total 23 [2021-11-19 13:21:09,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634659853] [2021-11-19 13:21:09,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:21:09,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:21:09,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:21:09,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:21:09,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2021-11-19 13:21:09,567 INFO L87 Difference]: Start difference. First operand 3739 states and 5244 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 13:21:10,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:21:10,402 INFO L93 Difference]: Finished difference Result 3745 states and 5249 transitions. [2021-11-19 13:21:10,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:21:10,403 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 86 [2021-11-19 13:21:10,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:21:10,434 INFO L225 Difference]: With dead ends: 3745 [2021-11-19 13:21:10,435 INFO L226 Difference]: Without dead ends: 3743 [2021-11-19 13:21:10,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2021-11-19 13:21:10,441 INFO L933 BasicCegarLoop]: 5229 mSDtfsCounter, 5187 mSDsluCounter, 10435 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5197 SdHoareTripleChecker+Valid, 15664 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:21:10,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5197 Valid, 15664 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:21:10,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3743 states. [2021-11-19 13:21:10,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3743 to 3743. [2021-11-19 13:21:10,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3743 states, 2502 states have (on average 1.2398081534772183) internal successors, (3102), 2553 states have internal predecessors, (3102), 1074 states have call successors, (1074), 164 states have call predecessors, (1074), 163 states have return successors, (1071), 1062 states have call predecessors, (1071), 1071 states have call successors, (1071) [2021-11-19 13:21:10,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3743 states to 3743 states and 5247 transitions. [2021-11-19 13:21:10,762 INFO L78 Accepts]: Start accepts. Automaton has 3743 states and 5247 transitions. Word has length 86 [2021-11-19 13:21:10,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:21:10,763 INFO L470 AbstractCegarLoop]: Abstraction has 3743 states and 5247 transitions. [2021-11-19 13:21:10,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 13:21:10,763 INFO L276 IsEmpty]: Start isEmpty. Operand 3743 states and 5247 transitions. [2021-11-19 13:21:10,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-19 13:21:10,765 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:21:10,765 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 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] [2021-11-19 13:21:10,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 13:21:11,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-11-19 13:21:11,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:21:11,182 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:21:11,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:21:11,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1548642933, now seen corresponding path program 1 times [2021-11-19 13:21:11,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:21:11,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1234221404] [2021-11-19 13:21:11,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:21:11,184 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:21:11,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:21:11,185 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:21:11,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 13:21:12,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:21:12,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 1360 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:21:12,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:21:13,748 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-11-19 13:21:13,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:21:14,240 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-11-19 13:21:14,241 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:21:14,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1234221404] [2021-11-19 13:21:14,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1234221404] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:21:14,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:21:14,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 13:21:14,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464451166] [2021-11-19 13:21:14,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:21:14,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:21:14,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:21:14,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:21:14,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:21:14,243 INFO L87 Difference]: Start difference. First operand 3743 states and 5247 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 13:21:14,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:21:14,865 INFO L93 Difference]: Finished difference Result 3749 states and 5252 transitions. [2021-11-19 13:21:14,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:21:14,866 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 78 [2021-11-19 13:21:14,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:21:14,916 INFO L225 Difference]: With dead ends: 3749 [2021-11-19 13:21:14,916 INFO L226 Difference]: Without dead ends: 3747 [2021-11-19 13:21:14,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:21:14,921 INFO L933 BasicCegarLoop]: 5229 mSDtfsCounter, 5197 mSDsluCounter, 10435 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5206 SdHoareTripleChecker+Valid, 15664 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:21:14,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5206 Valid, 15664 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:21:14,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3747 states. [2021-11-19 13:21:15,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3747 to 3747. [2021-11-19 13:21:15,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3747 states, 2505 states have (on average 1.2395209580838322) internal successors, (3105), 2556 states have internal predecessors, (3105), 1074 states have call successors, (1074), 165 states have call predecessors, (1074), 164 states have return successors, (1071), 1062 states have call predecessors, (1071), 1071 states have call successors, (1071) [2021-11-19 13:21:15,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3747 states to 3747 states and 5250 transitions. [2021-11-19 13:21:15,274 INFO L78 Accepts]: Start accepts. Automaton has 3747 states and 5250 transitions. Word has length 78 [2021-11-19 13:21:15,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:21:15,275 INFO L470 AbstractCegarLoop]: Abstraction has 3747 states and 5250 transitions. [2021-11-19 13:21:15,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 13:21:15,276 INFO L276 IsEmpty]: Start isEmpty. Operand 3747 states and 5250 transitions. [2021-11-19 13:21:15,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-19 13:21:15,284 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:21:15,284 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:21:15,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 13:21:15,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:21:15,506 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:21:15,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:21:15,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1183889106, now seen corresponding path program 1 times [2021-11-19 13:21:15,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:21:15,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1140562421] [2021-11-19 13:21:15,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:21:15,507 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:21:15,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:21:15,508 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:21:15,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 13:21:17,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:21:17,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 1407 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-19 13:21:17,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:21:18,965 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-19 13:21:18,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:21:20,551 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-11-19 13:21:20,552 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:21:20,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1140562421] [2021-11-19 13:21:20,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1140562421] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:21:20,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1802705369] [2021-11-19 13:21:20,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:21:20,552 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:21:20,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:21:20,566 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:21:20,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-19 13:21:22,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:21:22,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 1407 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:21:22,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:21:24,001 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-19 13:21:24,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:21:24,953 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-19 13:21:24,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1802705369] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:21:24,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 13:21:24,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15, 15, 4] total 23 [2021-11-19 13:21:24,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576343699] [2021-11-19 13:21:24,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:21:24,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:21:24,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:21:24,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:21:24,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2021-11-19 13:21:24,957 INFO L87 Difference]: Start difference. First operand 3747 states and 5250 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 13:21:25,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:21:25,878 INFO L93 Difference]: Finished difference Result 3753 states and 5255 transitions. [2021-11-19 13:21:25,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:21:25,879 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 96 [2021-11-19 13:21:25,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:21:25,903 INFO L225 Difference]: With dead ends: 3753 [2021-11-19 13:21:25,903 INFO L226 Difference]: Without dead ends: 3751 [2021-11-19 13:21:25,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2021-11-19 13:21:25,908 INFO L933 BasicCegarLoop]: 5229 mSDtfsCounter, 5187 mSDsluCounter, 10435 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5195 SdHoareTripleChecker+Valid, 15664 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:21:25,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5195 Valid, 15664 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:21:25,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3751 states. [2021-11-19 13:21:26,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3751 to 3751. [2021-11-19 13:21:26,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3751 states, 2508 states have (on average 1.2392344497607655) internal successors, (3108), 2559 states have internal predecessors, (3108), 1074 states have call successors, (1074), 166 states have call predecessors, (1074), 165 states have return successors, (1071), 1062 states have call predecessors, (1071), 1071 states have call successors, (1071) [2021-11-19 13:21:26,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3751 states to 3751 states and 5253 transitions. [2021-11-19 13:21:26,321 INFO L78 Accepts]: Start accepts. Automaton has 3751 states and 5253 transitions. Word has length 96 [2021-11-19 13:21:26,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:21:26,322 INFO L470 AbstractCegarLoop]: Abstraction has 3751 states and 5253 transitions. [2021-11-19 13:21:26,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 13:21:26,322 INFO L276 IsEmpty]: Start isEmpty. Operand 3751 states and 5253 transitions. [2021-11-19 13:21:26,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-19 13:21:26,325 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:21:26,325 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 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] [2021-11-19 13:21:26,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-19 13:21:26,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 13:21:26,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:21:26,750 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:21:26,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:21:26,751 INFO L85 PathProgramCache]: Analyzing trace with hash -626574005, now seen corresponding path program 1 times [2021-11-19 13:21:26,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:21:26,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1991890411] [2021-11-19 13:21:26,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:21:26,752 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:21:26,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:21:26,753 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:21:26,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 13:21:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:21:28,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 1374 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:21:28,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:21:29,728 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2021-11-19 13:21:29,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:21:30,300 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2021-11-19 13:21:30,300 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:21:30,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1991890411] [2021-11-19 13:21:30,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1991890411] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:21:30,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:21:30,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 13:21:30,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839366374] [2021-11-19 13:21:30,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:21:30,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:21:30,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:21:30,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:21:30,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:21:30,303 INFO L87 Difference]: Start difference. First operand 3751 states and 5253 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 13:21:31,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:21:31,085 INFO L93 Difference]: Finished difference Result 3928 states and 5481 transitions. [2021-11-19 13:21:31,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:21:31,085 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 88 [2021-11-19 13:21:31,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:21:31,107 INFO L225 Difference]: With dead ends: 3928 [2021-11-19 13:21:31,107 INFO L226 Difference]: Without dead ends: 3926 [2021-11-19 13:21:31,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:21:31,114 INFO L933 BasicCegarLoop]: 5380 mSDtfsCounter, 5106 mSDsluCounter, 11049 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5113 SdHoareTripleChecker+Valid, 16429 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:21:31,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5113 Valid, 16429 Invalid, 26 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:21:31,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3926 states. [2021-11-19 13:21:31,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3926 to 3924. [2021-11-19 13:21:31,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3924 states, 2632 states have (on average 1.2420212765957446) internal successors, (3269), 2684 states have internal predecessors, (3269), 1106 states have call successors, (1106), 183 states have call predecessors, (1106), 182 states have return successors, (1103), 1094 states have call predecessors, (1103), 1103 states have call successors, (1103) [2021-11-19 13:21:31,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3924 states to 3924 states and 5478 transitions. [2021-11-19 13:21:31,614 INFO L78 Accepts]: Start accepts. Automaton has 3924 states and 5478 transitions. Word has length 88 [2021-11-19 13:21:31,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:21:31,614 INFO L470 AbstractCegarLoop]: Abstraction has 3924 states and 5478 transitions. [2021-11-19 13:21:31,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 13:21:31,615 INFO L276 IsEmpty]: Start isEmpty. Operand 3924 states and 5478 transitions. [2021-11-19 13:21:31,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-19 13:21:31,617 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:21:31,618 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 3, 3, 3, 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] [2021-11-19 13:21:31,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 13:21:31,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:21:31,840 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:21:31,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:21:31,841 INFO L85 PathProgramCache]: Analyzing trace with hash -312152117, now seen corresponding path program 1 times [2021-11-19 13:21:31,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:21:31,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1405185632] [2021-11-19 13:21:31,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:21:31,843 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:21:31,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:21:31,846 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:21:31,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 13:21:33,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:21:33,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 1381 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:21:33,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:21:34,880 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-11-19 13:21:34,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:21:35,448 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-11-19 13:21:35,448 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:21:35,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1405185632] [2021-11-19 13:21:35,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1405185632] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:21:35,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:21:35,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 13:21:35,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060087510] [2021-11-19 13:21:35,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:21:35,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:21:35,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:21:35,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:21:35,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:21:35,450 INFO L87 Difference]: Start difference. First operand 3924 states and 5478 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-19 13:21:36,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:21:36,081 INFO L93 Difference]: Finished difference Result 3930 states and 5483 transitions. [2021-11-19 13:21:36,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:21:36,082 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 93 [2021-11-19 13:21:36,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:21:36,103 INFO L225 Difference]: With dead ends: 3930 [2021-11-19 13:21:36,103 INFO L226 Difference]: Without dead ends: 3928 [2021-11-19 13:21:36,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:21:36,108 INFO L933 BasicCegarLoop]: 5229 mSDtfsCounter, 5197 mSDsluCounter, 10435 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5203 SdHoareTripleChecker+Valid, 15664 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:21:36,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5203 Valid, 15664 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:21:36,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3928 states. [2021-11-19 13:21:36,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3928 to 3928. [2021-11-19 13:21:36,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3928 states, 2635 states have (on average 1.2417457305502846) internal successors, (3272), 2687 states have internal predecessors, (3272), 1106 states have call successors, (1106), 184 states have call predecessors, (1106), 183 states have return successors, (1103), 1094 states have call predecessors, (1103), 1103 states have call successors, (1103) [2021-11-19 13:21:36,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3928 states to 3928 states and 5481 transitions. [2021-11-19 13:21:36,530 INFO L78 Accepts]: Start accepts. Automaton has 3928 states and 5481 transitions. Word has length 93 [2021-11-19 13:21:36,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:21:36,530 INFO L470 AbstractCegarLoop]: Abstraction has 3928 states and 5481 transitions. [2021-11-19 13:21:36,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-19 13:21:36,530 INFO L276 IsEmpty]: Start isEmpty. Operand 3928 states and 5481 transitions. [2021-11-19 13:21:36,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-19 13:21:36,534 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:21:36,534 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:21:36,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 13:21:36,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:21:36,753 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:21:36,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:21:36,754 INFO L85 PathProgramCache]: Analyzing trace with hash 750150024, now seen corresponding path program 1 times [2021-11-19 13:21:36,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:21:36,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1086434001] [2021-11-19 13:21:36,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:21:36,756 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:21:36,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:21:36,758 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:21:36,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 13:21:38,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:21:38,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 1428 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-19 13:21:38,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:21:40,498 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2021-11-19 13:21:40,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:21:41,957 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 23 proven. 3 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2021-11-19 13:21:41,958 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:21:41,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1086434001] [2021-11-19 13:21:41,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1086434001] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:21:41,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [393255917] [2021-11-19 13:21:41,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:21:41,959 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:21:41,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:21:41,960 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:21:41,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-19 13:21:43,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:21:43,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 1428 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:21:43,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:21:45,095 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2021-11-19 13:21:45,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:21:46,035 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2021-11-19 13:21:46,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [393255917] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:21:46,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 13:21:46,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15, 15, 4] total 23 [2021-11-19 13:21:46,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769752302] [2021-11-19 13:21:46,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:21:46,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:21:46,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:21:46,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:21:46,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2021-11-19 13:21:46,038 INFO L87 Difference]: Start difference. First operand 3928 states and 5481 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-19 13:21:46,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:21:46,849 INFO L93 Difference]: Finished difference Result 3934 states and 5486 transitions. [2021-11-19 13:21:46,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:21:46,850 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 111 [2021-11-19 13:21:46,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:21:46,868 INFO L225 Difference]: With dead ends: 3934 [2021-11-19 13:21:46,869 INFO L226 Difference]: Without dead ends: 3932 [2021-11-19 13:21:46,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 419 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2021-11-19 13:21:46,874 INFO L933 BasicCegarLoop]: 5229 mSDtfsCounter, 5187 mSDsluCounter, 10435 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5192 SdHoareTripleChecker+Valid, 15664 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:21:46,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5192 Valid, 15664 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:21:46,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3932 states. [2021-11-19 13:21:47,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3932 to 3932. [2021-11-19 13:21:47,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3932 states, 2638 states have (on average 1.2414708112206216) internal successors, (3275), 2690 states have internal predecessors, (3275), 1106 states have call successors, (1106), 185 states have call predecessors, (1106), 184 states have return successors, (1103), 1094 states have call predecessors, (1103), 1103 states have call successors, (1103) [2021-11-19 13:21:47,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3932 states to 3932 states and 5484 transitions. [2021-11-19 13:21:47,241 INFO L78 Accepts]: Start accepts. Automaton has 3932 states and 5484 transitions. Word has length 111 [2021-11-19 13:21:47,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:21:47,242 INFO L470 AbstractCegarLoop]: Abstraction has 3932 states and 5484 transitions. [2021-11-19 13:21:47,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-19 13:21:47,242 INFO L276 IsEmpty]: Start isEmpty. Operand 3932 states and 5484 transitions. [2021-11-19 13:21:47,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-19 13:21:47,245 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:21:47,245 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:21:47,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-19 13:21:47,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 13:21:47,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:21:47,671 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:21:47,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:21:47,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1881900380, now seen corresponding path program 1 times [2021-11-19 13:21:47,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:21:47,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1666780568] [2021-11-19 13:21:47,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:21:47,674 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:21:47,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:21:47,675 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:21:47,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 13:21:49,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:21:49,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 1533 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-19 13:21:49,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:21:51,529 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 87 proven. 3 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-19 13:21:51,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:21:53,054 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 3 proven. 39 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-11-19 13:21:53,054 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:21:53,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1666780568] [2021-11-19 13:21:53,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1666780568] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:21:53,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1535954864] [2021-11-19 13:21:53,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:21:53,055 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:21:53,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:21:53,056 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:21:53,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-19 13:21:56,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:21:56,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 1533 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-19 13:21:56,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:21:57,807 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2021-11-19 13:21:57,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:21:59,525 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2021-11-19 13:21:59,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1535954864] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:21:59,526 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:21:59,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [15, 15] total 26 [2021-11-19 13:21:59,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926503228] [2021-11-19 13:21:59,526 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:21:59,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 13:21:59,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:21:59,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 13:21:59,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=593, Unknown=0, NotChecked=0, Total=650 [2021-11-19 13:21:59,527 INFO L87 Difference]: Start difference. First operand 3932 states and 5484 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 8 states have internal predecessors, (56), 4 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 6 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-19 13:22:00,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:22:00,315 INFO L93 Difference]: Finished difference Result 4187 states and 5777 transitions. [2021-11-19 13:22:00,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:22:00,317 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 8 states have internal predecessors, (56), 4 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 6 states have call predecessors, (23), 4 states have call successors, (23) Word has length 131 [2021-11-19 13:22:00,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:22:00,341 INFO L225 Difference]: With dead ends: 4187 [2021-11-19 13:22:00,341 INFO L226 Difference]: Without dead ends: 3940 [2021-11-19 13:22:00,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 496 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=63, Invalid=639, Unknown=0, NotChecked=0, Total=702 [2021-11-19 13:22:00,348 INFO L933 BasicCegarLoop]: 5233 mSDtfsCounter, 26 mSDsluCounter, 31332 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 36565 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:22:00,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 36565 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:22:00,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3940 states. [2021-11-19 13:22:00,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3940 to 3932. [2021-11-19 13:22:00,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3932 states, 2638 states have (on average 1.2410917361637603) internal successors, (3274), 2689 states have internal predecessors, (3274), 1106 states have call successors, (1106), 185 states have call predecessors, (1106), 184 states have return successors, (1103), 1094 states have call predecessors, (1103), 1103 states have call successors, (1103) [2021-11-19 13:22:00,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3932 states to 3932 states and 5483 transitions. [2021-11-19 13:22:00,723 INFO L78 Accepts]: Start accepts. Automaton has 3932 states and 5483 transitions. Word has length 131 [2021-11-19 13:22:00,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:22:00,724 INFO L470 AbstractCegarLoop]: Abstraction has 3932 states and 5483 transitions. [2021-11-19 13:22:00,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 8 states have internal predecessors, (56), 4 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 6 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-19 13:22:00,724 INFO L276 IsEmpty]: Start isEmpty. Operand 3932 states and 5483 transitions. [2021-11-19 13:22:00,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-19 13:22:00,727 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:22:00,727 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:22:00,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-19 13:22:01,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 13:22:01,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:22:01,154 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:22:01,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:22:01,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1669208366, now seen corresponding path program 1 times [2021-11-19 13:22:01,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:22:01,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1616628572] [2021-11-19 13:22:01,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:22:01,157 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:22:01,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:22:01,159 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:22:01,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 13:22:03,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:22:03,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 1435 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-19 13:22:03,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:05,206 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2021-11-19 13:22:05,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:06,808 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 25 proven. 3 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-11-19 13:22:06,808 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:22:06,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1616628572] [2021-11-19 13:22:06,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1616628572] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:22:06,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [662459350] [2021-11-19 13:22:06,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:22:06,808 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:22:06,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:22:06,809 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:22:06,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-19 13:22:08,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:22:08,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 1435 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:22:08,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:10,441 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2021-11-19 13:22:10,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:11,423 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2021-11-19 13:22:11,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [662459350] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:22:11,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 13:22:11,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15, 15, 4] total 23 [2021-11-19 13:22:11,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402093786] [2021-11-19 13:22:11,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:22:11,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:22:11,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:22:11,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:22:11,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2021-11-19 13:22:11,427 INFO L87 Difference]: Start difference. First operand 3932 states and 5483 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-19 13:22:12,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:22:12,250 INFO L93 Difference]: Finished difference Result 3938 states and 5488 transitions. [2021-11-19 13:22:12,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:22:12,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 116 [2021-11-19 13:22:12,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:22:12,271 INFO L225 Difference]: With dead ends: 3938 [2021-11-19 13:22:12,272 INFO L226 Difference]: Without dead ends: 3936 [2021-11-19 13:22:12,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 439 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2021-11-19 13:22:12,277 INFO L933 BasicCegarLoop]: 5228 mSDtfsCounter, 5186 mSDsluCounter, 10433 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5190 SdHoareTripleChecker+Valid, 15661 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:22:12,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5190 Valid, 15661 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:22:12,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3936 states. [2021-11-19 13:22:12,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3936 to 3936. [2021-11-19 13:22:12,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3936 states, 2641 states have (on average 1.2408178720181748) internal successors, (3277), 2692 states have internal predecessors, (3277), 1106 states have call successors, (1106), 186 states have call predecessors, (1106), 185 states have return successors, (1103), 1094 states have call predecessors, (1103), 1103 states have call successors, (1103) [2021-11-19 13:22:12,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3936 states to 3936 states and 5486 transitions. [2021-11-19 13:22:12,780 INFO L78 Accepts]: Start accepts. Automaton has 3936 states and 5486 transitions. Word has length 116 [2021-11-19 13:22:12,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:22:12,781 INFO L470 AbstractCegarLoop]: Abstraction has 3936 states and 5486 transitions. [2021-11-19 13:22:12,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-19 13:22:12,782 INFO L276 IsEmpty]: Start isEmpty. Operand 3936 states and 5486 transitions. [2021-11-19 13:22:12,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-19 13:22:12,785 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:22:12,785 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:22:12,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 13:22:13,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-19 13:22:13,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:22:13,208 INFO L402 AbstractCegarLoop]: === Iteration 14 === 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:22:13,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:22:13,208 INFO L85 PathProgramCache]: Analyzing trace with hash -507480071, now seen corresponding path program 1 times [2021-11-19 13:22:13,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:22:13,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1800830824] [2021-11-19 13:22:13,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:22:13,211 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:22:13,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:22:13,213 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:22:13,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-19 13:22:15,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:22:15,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 1544 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-19 13:22:15,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:17,463 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 87 proven. 3 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-19 13:22:17,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:19,182 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 3 proven. 39 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-11-19 13:22:19,182 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:22:19,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1800830824] [2021-11-19 13:22:19,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1800830824] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:22:19,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1936233806] [2021-11-19 13:22:19,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:22:19,183 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:22:19,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:22:19,184 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:22:19,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-19 13:22:25,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:22:25,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 1544 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 13:22:25,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:27,967 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2021-11-19 13:22:27,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:29,233 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2021-11-19 13:22:29,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1936233806] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:22:29,234 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:22:29,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [15, 15] total 23 [2021-11-19 13:22:29,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241327599] [2021-11-19 13:22:29,234 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:22:29,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:22:29,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:22:29,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:22:29,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2021-11-19 13:22:29,236 INFO L87 Difference]: Start difference. First operand 3936 states and 5486 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (35), 4 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-19 13:22:29,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:22:29,874 INFO L93 Difference]: Finished difference Result 3938 states and 5487 transitions. [2021-11-19 13:22:29,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:22:29,875 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (35), 4 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 135 [2021-11-19 13:22:29,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:22:29,898 INFO L225 Difference]: With dead ends: 3938 [2021-11-19 13:22:29,898 INFO L226 Difference]: Without dead ends: 3936 [2021-11-19 13:22:29,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 515 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-11-19 13:22:29,904 INFO L933 BasicCegarLoop]: 5374 mSDtfsCounter, 5065 mSDsluCounter, 16430 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5066 SdHoareTripleChecker+Valid, 21804 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:22:29,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5066 Valid, 21804 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:22:29,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3936 states. [2021-11-19 13:22:30,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3936 to 3934. [2021-11-19 13:22:30,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3934 states, 2640 states have (on average 1.240530303030303) internal successors, (3275), 2690 states have internal predecessors, (3275), 1106 states have call successors, (1106), 186 states have call predecessors, (1106), 185 states have return successors, (1103), 1094 states have call predecessors, (1103), 1103 states have call successors, (1103) [2021-11-19 13:22:30,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3934 states to 3934 states and 5484 transitions. [2021-11-19 13:22:30,420 INFO L78 Accepts]: Start accepts. Automaton has 3934 states and 5484 transitions. Word has length 135 [2021-11-19 13:22:30,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:22:30,420 INFO L470 AbstractCegarLoop]: Abstraction has 3934 states and 5484 transitions. [2021-11-19 13:22:30,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (35), 4 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-19 13:22:30,424 INFO L276 IsEmpty]: Start isEmpty. Operand 3934 states and 5484 transitions. [2021-11-19 13:22:30,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-19 13:22:30,428 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:22:30,428 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:22:30,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-19 13:22:30,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2021-11-19 13:22:30,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:22:30,842 INFO L402 AbstractCegarLoop]: === Iteration 15 === 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:22:30,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:22:30,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1286450936, now seen corresponding path program 1 times [2021-11-19 13:22:30,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:22:30,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1859605476] [2021-11-19 13:22:30,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:22:30,844 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:22:30,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:22:30,845 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:22:30,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-19 13:22:32,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:22:32,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 1442 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-19 13:22:32,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:34,783 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2021-11-19 13:22:34,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:36,432 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2021-11-19 13:22:36,433 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:22:36,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1859605476] [2021-11-19 13:22:36,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1859605476] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:22:36,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [218903667] [2021-11-19 13:22:36,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:22:36,433 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:22:36,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:22:36,434 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:22:36,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-19 13:22:38,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:22:38,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 1442 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:22:38,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:40,141 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-11-19 13:22:40,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:41,205 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-11-19 13:22:41,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [218903667] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:22:41,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 13:22:41,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15, 15, 4] total 23 [2021-11-19 13:22:41,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14741873] [2021-11-19 13:22:41,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:22:41,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:22:41,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:22:41,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:22:41,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2021-11-19 13:22:41,208 INFO L87 Difference]: Start difference. First operand 3934 states and 5484 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-19 13:22:42,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:22:42,109 INFO L93 Difference]: Finished difference Result 3940 states and 5489 transitions. [2021-11-19 13:22:42,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:22:42,110 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 121 [2021-11-19 13:22:42,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:22:42,133 INFO L225 Difference]: With dead ends: 3940 [2021-11-19 13:22:42,133 INFO L226 Difference]: Without dead ends: 3938 [2021-11-19 13:22:42,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 459 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2021-11-19 13:22:42,138 INFO L933 BasicCegarLoop]: 5226 mSDtfsCounter, 5184 mSDsluCounter, 10429 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5187 SdHoareTripleChecker+Valid, 15655 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:22:42,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5187 Valid, 15655 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:22:42,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3938 states. [2021-11-19 13:22:42,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3938 to 3938. [2021-11-19 13:22:42,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3938 states, 2643 states have (on average 1.2402572833900871) internal successors, (3278), 2693 states have internal predecessors, (3278), 1106 states have call successors, (1106), 187 states have call predecessors, (1106), 186 states have return successors, (1103), 1094 states have call predecessors, (1103), 1103 states have call successors, (1103) [2021-11-19 13:22:42,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3938 states to 3938 states and 5487 transitions. [2021-11-19 13:22:42,608 INFO L78 Accepts]: Start accepts. Automaton has 3938 states and 5487 transitions. Word has length 121 [2021-11-19 13:22:42,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:22:42,608 INFO L470 AbstractCegarLoop]: Abstraction has 3938 states and 5487 transitions. [2021-11-19 13:22:42,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-19 13:22:42,609 INFO L276 IsEmpty]: Start isEmpty. Operand 3938 states and 5487 transitions. [2021-11-19 13:22:42,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-19 13:22:42,612 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:22:42,612 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 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] [2021-11-19 13:22:42,670 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-11-19 13:22:42,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-19 13:22:43,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:22:43,037 INFO L402 AbstractCegarLoop]: === Iteration 16 === 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:22:43,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:22:43,038 INFO L85 PathProgramCache]: Analyzing trace with hash -629493941, now seen corresponding path program 1 times [2021-11-19 13:22:43,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:22:43,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2096469022] [2021-11-19 13:22:43,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:22:43,040 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:22:43,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:22:43,041 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:22:43,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-19 13:22:44,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:22:44,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 1409 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:22:44,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:46,129 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2021-11-19 13:22:46,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:46,795 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2021-11-19 13:22:46,795 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:22:46,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2096469022] [2021-11-19 13:22:46,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2096469022] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:22:46,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:22:46,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-19 13:22:46,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070116450] [2021-11-19 13:22:46,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:22:46,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:22:46,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:22:46,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:22:46,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:22:46,797 INFO L87 Difference]: Start difference. First operand 3938 states and 5487 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-19 13:22:47,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:22:47,344 INFO L93 Difference]: Finished difference Result 3944 states and 5492 transitions. [2021-11-19 13:22:47,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:22:47,345 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 113 [2021-11-19 13:22:47,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:22:47,362 INFO L225 Difference]: With dead ends: 3944 [2021-11-19 13:22:47,363 INFO L226 Difference]: Without dead ends: 3942 [2021-11-19 13:22:47,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:22:47,367 INFO L933 BasicCegarLoop]: 5226 mSDtfsCounter, 5194 mSDsluCounter, 10429 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5196 SdHoareTripleChecker+Valid, 15655 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:22:47,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5196 Valid, 15655 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:22:47,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3942 states. [2021-11-19 13:22:47,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3942 to 3942. [2021-11-19 13:22:47,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3942 states, 2646 states have (on average 1.2399848828420257) internal successors, (3281), 2696 states have internal predecessors, (3281), 1106 states have call successors, (1106), 188 states have call predecessors, (1106), 187 states have return successors, (1103), 1094 states have call predecessors, (1103), 1103 states have call successors, (1103) [2021-11-19 13:22:47,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3942 states to 3942 states and 5490 transitions. [2021-11-19 13:22:47,836 INFO L78 Accepts]: Start accepts. Automaton has 3942 states and 5490 transitions. Word has length 113 [2021-11-19 13:22:47,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:22:47,836 INFO L470 AbstractCegarLoop]: Abstraction has 3942 states and 5490 transitions. [2021-11-19 13:22:47,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-19 13:22:47,837 INFO L276 IsEmpty]: Start isEmpty. Operand 3942 states and 5490 transitions. [2021-11-19 13:22:47,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-19 13:22:47,840 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:22:47,841 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:22:47,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-19 13:22:48,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:22:48,066 INFO L402 AbstractCegarLoop]: === Iteration 17 === 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:22:48,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:22:48,066 INFO L85 PathProgramCache]: Analyzing trace with hash 198873224, now seen corresponding path program 1 times [2021-11-19 13:22:48,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:22:48,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1094301057] [2021-11-19 13:22:48,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:22:48,068 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:22:48,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:22:48,070 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:22:48,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-19 13:22:49,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:22:50,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 1456 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-19 13:22:50,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:51,797 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2021-11-19 13:22:51,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:53,332 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 31 proven. 3 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2021-11-19 13:22:53,332 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:22:53,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1094301057] [2021-11-19 13:22:53,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1094301057] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:22:53,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1951569009] [2021-11-19 13:22:53,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:22:53,333 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:22:53,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:22:53,342 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:22:53,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-19 13:22:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:22:54,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 1456 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:22:54,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:56,698 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2021-11-19 13:22:56,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:57,746 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2021-11-19 13:22:57,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1951569009] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:22:57,747 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 13:22:57,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15, 15, 4] total 23 [2021-11-19 13:22:57,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959899208] [2021-11-19 13:22:57,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:22:57,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:22:57,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:22:57,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:22:57,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2021-11-19 13:22:57,750 INFO L87 Difference]: Start difference. First operand 3942 states and 5490 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-19 13:22:58,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:22:58,566 INFO L93 Difference]: Finished difference Result 3948 states and 5495 transitions. [2021-11-19 13:22:58,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:22:58,567 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 131 [2021-11-19 13:22:58,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:22:58,620 INFO L225 Difference]: With dead ends: 3948 [2021-11-19 13:22:58,621 INFO L226 Difference]: Without dead ends: 3944 [2021-11-19 13:22:58,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 499 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2021-11-19 13:22:58,623 INFO L933 BasicCegarLoop]: 5226 mSDtfsCounter, 5184 mSDsluCounter, 10429 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5185 SdHoareTripleChecker+Valid, 15655 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:22:58,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5185 Valid, 15655 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:22:58,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3944 states. [2021-11-19 13:22:59,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3944 to 3944. [2021-11-19 13:22:59,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3944 states, 2648 states have (on average 1.2394259818731117) internal successors, (3282), 2697 states have internal predecessors, (3282), 1106 states have call successors, (1106), 189 states have call predecessors, (1106), 187 states have return successors, (1103), 1094 states have call predecessors, (1103), 1103 states have call successors, (1103) [2021-11-19 13:22:59,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3944 states to 3944 states and 5491 transitions. [2021-11-19 13:22:59,086 INFO L78 Accepts]: Start accepts. Automaton has 3944 states and 5491 transitions. Word has length 131 [2021-11-19 13:22:59,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:22:59,087 INFO L470 AbstractCegarLoop]: Abstraction has 3944 states and 5491 transitions. [2021-11-19 13:22:59,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-19 13:22:59,087 INFO L276 IsEmpty]: Start isEmpty. Operand 3944 states and 5491 transitions. [2021-11-19 13:22:59,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-19 13:22:59,092 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:22:59,092 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:22:59,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2021-11-19 13:22:59,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-19 13:22:59,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:22:59,512 INFO L402 AbstractCegarLoop]: === Iteration 18 === 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:22:59,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:22:59,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1894536914, now seen corresponding path program 1 times [2021-11-19 13:22:59,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:22:59,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1941428090] [2021-11-19 13:22:59,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:22:59,514 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:22:59,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:22:59,515 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:22:59,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-19 13:23:01,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:23:01,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 1463 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-19 13:23:01,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:23:03,129 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2021-11-19 13:23:03,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:23:04,574 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2021-11-19 13:23:04,574 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:23:04,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1941428090] [2021-11-19 13:23:04,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1941428090] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:23:04,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [129638829] [2021-11-19 13:23:04,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:23:04,575 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:23:04,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:23:04,575 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:23:04,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2021-11-19 13:23:05,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:23:06,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 1463 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:23:06,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:23:07,895 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2021-11-19 13:23:07,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:23:08,895 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2021-11-19 13:23:08,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [129638829] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:23:08,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 13:23:08,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15, 15, 4] total 23 [2021-11-19 13:23:08,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425120182] [2021-11-19 13:23:08,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:23:08,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:23:08,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:23:08,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:23:08,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2021-11-19 13:23:08,898 INFO L87 Difference]: Start difference. First operand 3944 states and 5491 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-19 13:23:10,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:23:10,011 INFO L93 Difference]: Finished difference Result 7860 states and 10943 transitions. [2021-11-19 13:23:10,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:23:10,011 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 136 [2021-11-19 13:23:10,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:23:10,052 INFO L225 Difference]: With dead ends: 7860 [2021-11-19 13:23:10,053 INFO L226 Difference]: Without dead ends: 7760 [2021-11-19 13:23:10,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 519 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2021-11-19 13:23:10,057 INFO L933 BasicCegarLoop]: 6565 mSDtfsCounter, 5183 mSDsluCounter, 18290 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5183 SdHoareTripleChecker+Valid, 24855 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:23:10,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5183 Valid, 24855 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:23:10,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7760 states. [2021-11-19 13:23:10,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7760 to 7755. [2021-11-19 13:23:10,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7755 states, 5212 states have (on average 1.2423254029163469) internal successors, (6475), 5310 states have internal predecessors, (6475), 2182 states have call successors, (2182), 361 states have call predecessors, (2182), 358 states have return successors, (2178), 2156 states have call predecessors, (2178), 2178 states have call successors, (2178) [2021-11-19 13:23:11,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7755 states to 7755 states and 10835 transitions. [2021-11-19 13:23:11,004 INFO L78 Accepts]: Start accepts. Automaton has 7755 states and 10835 transitions. Word has length 136 [2021-11-19 13:23:11,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:23:11,005 INFO L470 AbstractCegarLoop]: Abstraction has 7755 states and 10835 transitions. [2021-11-19 13:23:11,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-19 13:23:11,005 INFO L276 IsEmpty]: Start isEmpty. Operand 7755 states and 10835 transitions. [2021-11-19 13:23:11,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-11-19 13:23:11,015 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:23:11,015 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:23:11,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-19 13:23:11,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (28)] Ended with exit code 0 [2021-11-19 13:23:11,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:23:11,438 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:23:11,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:23:11,438 INFO L85 PathProgramCache]: Analyzing trace with hash 2053033267, now seen corresponding path program 1 times [2021-11-19 13:23:11,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:23:11,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1595858010] [2021-11-19 13:23:11,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:23:11,440 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:23:11,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:23:11,441 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:23:11,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-19 13:23:13,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:23:13,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 1706 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-19 13:23:13,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:23:15,674 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 99 proven. 3 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2021-11-19 13:23:15,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:23:17,579 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2021-11-19 13:23:17,579 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:23:17,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1595858010] [2021-11-19 13:23:17,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1595858010] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:23:17,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [474671851] [2021-11-19 13:23:17,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:23:17,580 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:23:17,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:23:17,580 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:23:17,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2021-11-19 13:23:19,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:23:19,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 1706 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:23:19,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:23:19,737 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-11-19 13:23:19,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:23:20,452 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-11-19 13:23:20,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [474671851] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:23:20,453 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:23:20,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [15, 15] total 19 [2021-11-19 13:23:20,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75238677] [2021-11-19 13:23:20,453 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:23:20,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:23:20,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:23:20,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:23:20,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2021-11-19 13:23:20,455 INFO L87 Difference]: Start difference. First operand 7755 states and 10835 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2021-11-19 13:23:21,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:23:21,081 INFO L93 Difference]: Finished difference Result 15503 states and 21878 transitions. [2021-11-19 13:23:21,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:23:21,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) Word has length 215 [2021-11-19 13:23:21,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:23:21,121 INFO L225 Difference]: With dead ends: 15503 [2021-11-19 13:23:21,121 INFO L226 Difference]: Without dead ends: 7767 [2021-11-19 13:23:21,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 856 GetRequests, 839 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2021-11-19 13:23:21,164 INFO L933 BasicCegarLoop]: 5228 mSDtfsCounter, 3 mSDsluCounter, 5221 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 10449 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:23:21,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 10449 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:23:21,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7767 states. [2021-11-19 13:23:22,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7767 to 7759. [2021-11-19 13:23:22,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7759 states, 5216 states have (on average 1.2421395705521472) internal successors, (6479), 5314 states have internal predecessors, (6479), 2182 states have call successors, (2182), 361 states have call predecessors, (2182), 358 states have return successors, (2178), 2156 states have call predecessors, (2178), 2178 states have call successors, (2178) [2021-11-19 13:23:22,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7759 states to 7759 states and 10839 transitions. [2021-11-19 13:23:22,248 INFO L78 Accepts]: Start accepts. Automaton has 7759 states and 10839 transitions. Word has length 215 [2021-11-19 13:23:22,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:23:22,249 INFO L470 AbstractCegarLoop]: Abstraction has 7759 states and 10839 transitions. [2021-11-19 13:23:22,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2021-11-19 13:23:22,249 INFO L276 IsEmpty]: Start isEmpty. Operand 7759 states and 10839 transitions. [2021-11-19 13:23:22,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-11-19 13:23:22,257 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:23:22,257 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:23:22,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (30)] Forceful destruction successful, exit code 0 [2021-11-19 13:23:22,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-11-19 13:23:22,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:23:22,673 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:23:22,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:23:22,673 INFO L85 PathProgramCache]: Analyzing trace with hash 247594933, now seen corresponding path program 1 times [2021-11-19 13:23:22,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:23:22,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1285526946] [2021-11-19 13:23:22,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:23:22,675 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:23:22,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:23:22,676 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:23:22,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-19 13:23:24,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:23:24,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 1706 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-19 13:23:24,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:23:27,070 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 99 proven. 3 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2021-11-19 13:23:27,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:23:28,889 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2021-11-19 13:23:28,889 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:23:28,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1285526946] [2021-11-19 13:23:28,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1285526946] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:23:28,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [925568817] [2021-11-19 13:23:28,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:23:28,889 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:23:28,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:23:28,890 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:23:28,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2021-11-19 13:23:33,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:23:33,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 1706 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:23:33,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:23:33,843 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-11-19 13:23:33,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:23:34,869 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-11-19 13:23:34,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [925568817] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:23:34,870 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:23:34,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [15, 15] total 20 [2021-11-19 13:23:34,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789923255] [2021-11-19 13:23:34,870 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:23:34,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:23:34,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:23:34,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:23:34,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:23:34,872 INFO L87 Difference]: Start difference. First operand 7759 states and 10839 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2021-11-19 13:23:35,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:23:35,754 INFO L93 Difference]: Finished difference Result 15583 states and 22100 transitions. [2021-11-19 13:23:35,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:23:35,755 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) Word has length 215 [2021-11-19 13:23:35,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:23:35,788 INFO L225 Difference]: With dead ends: 15583 [2021-11-19 13:23:35,788 INFO L226 Difference]: Without dead ends: 7843 [2021-11-19 13:23:35,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 856 GetRequests, 838 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:23:35,826 INFO L933 BasicCegarLoop]: 5228 mSDtfsCounter, 36 mSDsluCounter, 5217 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 10445 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:23:35,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 10445 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:23:35,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7843 states. [2021-11-19 13:23:37,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7843 to 7819. [2021-11-19 13:23:37,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7819 states, 5256 states have (on average 1.2418188736681888) internal successors, (6527), 5354 states have internal predecessors, (6527), 2202 states have call successors, (2202), 361 states have call predecessors, (2202), 358 states have return successors, (2198), 2176 states have call predecessors, (2198), 2198 states have call successors, (2198) [2021-11-19 13:23:37,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7819 states to 7819 states and 10927 transitions. [2021-11-19 13:23:37,163 INFO L78 Accepts]: Start accepts. Automaton has 7819 states and 10927 transitions. Word has length 215 [2021-11-19 13:23:37,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:23:37,164 INFO L470 AbstractCegarLoop]: Abstraction has 7819 states and 10927 transitions. [2021-11-19 13:23:37,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2021-11-19 13:23:37,165 INFO L276 IsEmpty]: Start isEmpty. Operand 7819 states and 10927 transitions. [2021-11-19 13:23:37,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-11-19 13:23:37,174 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:23:37,175 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:23:37,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (32)] Forceful destruction successful, exit code 0 [2021-11-19 13:23:37,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-11-19 13:23:37,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:23:37,602 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:23:37,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:23:37,603 INFO L85 PathProgramCache]: Analyzing trace with hash -837438168, now seen corresponding path program 1 times [2021-11-19 13:23:37,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:23:37,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [947702830] [2021-11-19 13:23:37,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:23:37,605 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:23:37,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:23:37,606 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:23:37,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-11-19 13:23:39,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:23:39,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 1731 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-19 13:23:39,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:23:42,169 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 99 proven. 3 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2021-11-19 13:23:42,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:23:44,137 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2021-11-19 13:23:44,137 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:23:44,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [947702830] [2021-11-19 13:23:44,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [947702830] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:23:44,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2046654420] [2021-11-19 13:23:44,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:23:44,138 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:23:44,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:23:44,139 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:23:44,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2021-11-19 13:23:51,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:23:51,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 1731 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-19 13:23:51,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:24:00,605 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-11-19 13:24:00,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:24:25,079 WARN L227 SmtUtils]: Spent 22.19s on a formula simplification. DAG size of input: 41 DAG size of output: 1 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-19 13:24:30,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-19 13:24:31,187 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-11-19 13:24:31,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2046654420] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:24:31,188 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:24:31,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17, 10] imperfect sequences [15, 15] total 41 [2021-11-19 13:24:31,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635722689] [2021-11-19 13:24:31,189 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:24:31,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-19 13:24:31,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:24:31,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-19 13:24:31,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1527, Unknown=0, NotChecked=0, Total=1640 [2021-11-19 13:24:31,191 INFO L87 Difference]: Start difference. First operand 7819 states and 10927 transitions. Second operand has 25 states, 21 states have (on average 7.142857142857143) internal successors, (150), 23 states have internal predecessors, (150), 13 states have call successors, (43), 4 states have call predecessors, (43), 8 states have return successors, (40), 10 states have call predecessors, (40), 12 states have call successors, (40) [2021-11-19 13:24:36,005 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:24:37,404 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:24:38,478 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:24:50,160 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:24:51,550 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:24:52,598 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:24:53,988 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:24:56,461 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:25:01,518 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:25:03,523 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:25:05,527 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:25:07,578 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:25:08,670 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:25:10,437 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:25:11,653 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:25:12,856 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:25:14,053 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:25:18,380 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:25:21,908 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:25:28,701 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:25:30,719 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:25:32,738 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:25:40,111 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:25:42,179 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:25:44,248 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:25:49,376 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:25:51,398 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:25:52,985 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:25:55,451 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:25:56,811 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:25:58,710 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:26:00,798 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:26:05,241 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:26:10,246 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:26:13,180 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:26:14,505 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:26:15,646 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:26:16,700 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:26:19,608 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:26:21,902 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:26:23,905 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:26:25,228 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:26:26,771 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:26:28,694 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:26:43,015 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:26:45,038 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:26:46,143 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:26:47,779 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:26:48,888 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:26:51,136 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:26:52,606 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:26:53,698 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:26:55,154 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:27:00,277 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:27:01,991 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:27:07,471 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:27:09,489 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:27:11,507 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:27:23,851 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:27:25,858 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:27:27,864 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:27:29,836 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:27:31,790 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:27:35,675 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:27:42,628 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:27:44,656 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:27:46,672 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:27:49,424 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:27:51,427 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:27:53,430 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:28:04,086 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:28:06,023 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:28:11,511 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:28:13,296 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:28:15,314 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:28:24,434 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:28:26,454 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:28:28,470 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:28:32,728 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:28:34,742 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:28:36,762 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:28:40,112 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:28:42,129 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:28:44,146 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:28:46,334 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:28:48,349 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:28:50,375 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:28:53,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:28:53,998 INFO L93 Difference]: Finished difference Result 15898 states and 22442 transitions. [2021-11-19 13:28:54,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-19 13:28:54,002 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 7.142857142857143) internal successors, (150), 23 states have internal predecessors, (150), 13 states have call successors, (43), 4 states have call predecessors, (43), 8 states have return successors, (40), 10 states have call predecessors, (40), 12 states have call successors, (40) Word has length 228 [2021-11-19 13:28:54,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:28:54,036 INFO L225 Difference]: With dead ends: 15898 [2021-11-19 13:28:54,037 INFO L226 Difference]: Without dead ends: 8086 [2021-11-19 13:28:54,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 912 GetRequests, 866 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=132, Invalid=1760, Unknown=0, NotChecked=0, Total=1892 [2021-11-19 13:28:54,066 INFO L933 BasicCegarLoop]: 5101 mSDtfsCounter, 146 mSDsluCounter, 66032 mSDsCounter, 0 mSdLazyCounter, 4499 mSolverCounterSat, 19 mSolverCounterUnsat, 39 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 251.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 71133 SdHoareTripleChecker+Invalid, 5510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 4499 IncrementalHoareTripleChecker+Invalid, 39 IncrementalHoareTripleChecker+Unknown, 953 IncrementalHoareTripleChecker+Unchecked, 260.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:28:54,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 71133 Invalid, 5510 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 4499 Invalid, 39 Unknown, 953 Unchecked, 260.4s Time] [2021-11-19 13:28:54,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8086 states. [2021-11-19 13:28:55,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8086 to 7987. [2021-11-19 13:28:55,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7987 states, 5372 states have (on average 1.2410647803425168) internal successors, (6667), 5474 states have internal predecessors, (6667), 2238 states have call successors, (2238), 377 states have call predecessors, (2238), 374 states have return successors, (2250), 2208 states have call predecessors, (2250), 2234 states have call successors, (2250) [2021-11-19 13:28:55,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7987 states to 7987 states and 11155 transitions. [2021-11-19 13:28:55,041 INFO L78 Accepts]: Start accepts. Automaton has 7987 states and 11155 transitions. Word has length 228 [2021-11-19 13:28:55,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:28:55,042 INFO L470 AbstractCegarLoop]: Abstraction has 7987 states and 11155 transitions. [2021-11-19 13:28:55,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 7.142857142857143) internal successors, (150), 23 states have internal predecessors, (150), 13 states have call successors, (43), 4 states have call predecessors, (43), 8 states have return successors, (40), 10 states have call predecessors, (40), 12 states have call successors, (40) [2021-11-19 13:28:55,042 INFO L276 IsEmpty]: Start isEmpty. Operand 7987 states and 11155 transitions. [2021-11-19 13:28:55,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-11-19 13:28:55,050 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:28:55,051 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:28:55,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-11-19 13:28:55,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (34)] Forceful destruction successful, exit code 0 [2021-11-19 13:28:55,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:28:55,464 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:28:55,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:28:55,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1428943018, now seen corresponding path program 1 times [2021-11-19 13:28:55,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:28:55,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2131699748] [2021-11-19 13:28:55,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:28:55,466 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:28:55,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:28:55,467 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:28:55,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-11-19 13:28:57,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:28:57,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 1730 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-19 13:28:57,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:28:59,815 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 99 proven. 3 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2021-11-19 13:28:59,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:29:01,707 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2021-11-19 13:29:01,707 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:29:01,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2131699748] [2021-11-19 13:29:01,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2131699748] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:29:01,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [810456605] [2021-11-19 13:29:01,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:29:01,708 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:29:01,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:29:01,709 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:29:01,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2021-11-19 13:29:08,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:29:08,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 1730 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:29:08,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:29:10,083 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-11-19 13:29:10,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:29:11,167 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-11-19 13:29:11,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [810456605] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:29:11,167 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:29:11,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [15, 15] total 23 [2021-11-19 13:29:11,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843302889] [2021-11-19 13:29:11,168 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:29:11,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:29:11,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:29:11,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:29:11,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2021-11-19 13:29:11,170 INFO L87 Difference]: Start difference. First operand 7987 states and 11155 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (43), 4 states have call predecessors, (43), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-19 13:29:12,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:29:12,462 INFO L93 Difference]: Finished difference Result 7989 states and 11156 transitions. [2021-11-19 13:29:12,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:29:12,464 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (43), 4 states have call predecessors, (43), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 228 [2021-11-19 13:29:12,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:29:12,504 INFO L225 Difference]: With dead ends: 7989 [2021-11-19 13:29:12,505 INFO L226 Difference]: Without dead ends: 7721 [2021-11-19 13:29:12,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 910 GetRequests, 887 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-11-19 13:29:12,514 INFO L933 BasicCegarLoop]: 5327 mSDtfsCounter, 238 mSDsluCounter, 15786 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 21113 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:29:12,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [239 Valid, 21113 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:29:12,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7721 states. [2021-11-19 13:29:13,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7721 to 7721. [2021-11-19 13:29:13,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7721 states, 5187 states have (on average 1.2388663967611335) internal successors, (6426), 5278 states have internal predecessors, (6426), 2160 states have call successors, (2160), 374 states have call predecessors, (2160), 371 states have return successors, (2173), 2136 states have call predecessors, (2173), 2157 states have call successors, (2173) [2021-11-19 13:29:13,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7721 states to 7721 states and 10759 transitions. [2021-11-19 13:29:13,387 INFO L78 Accepts]: Start accepts. Automaton has 7721 states and 10759 transitions. Word has length 228 [2021-11-19 13:29:13,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:29:13,387 INFO L470 AbstractCegarLoop]: Abstraction has 7721 states and 10759 transitions. [2021-11-19 13:29:13,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (43), 4 states have call predecessors, (43), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-19 13:29:13,388 INFO L276 IsEmpty]: Start isEmpty. Operand 7721 states and 10759 transitions. [2021-11-19 13:29:13,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1153 [2021-11-19 13:29:13,424 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:29:13,425 INFO L514 BasicCegarLoop]: trace histogram [26, 26, 23, 23, 20, 20, 13, 13, 13, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:29:13,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (36)] Forceful destruction successful, exit code 0 [2021-11-19 13:29:13,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-11-19 13:29:13,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:29:13,842 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:29:13,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:29:13,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1690747017, now seen corresponding path program 1 times [2021-11-19 13:29:13,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:29:13,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1489044288] [2021-11-19 13:29:13,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:29:13,846 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:29:13,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:29:13,847 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:29:13,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-11-19 13:29:17,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:29:17,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 4264 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 13:29:17,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:29:25,537 INFO L134 CoverageAnalysis]: Checked inductivity of 3856 backedges. 180 proven. 3 refuted. 0 times theorem prover too weak. 3673 trivial. 0 not checked. [2021-11-19 13:29:25,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:29:29,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3856 backedges. 3 proven. 51 refuted. 0 times theorem prover too weak. 3802 trivial. 0 not checked. [2021-11-19 13:29:29,871 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:29:29,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1489044288] [2021-11-19 13:29:29,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1489044288] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:29:29,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [374583513] [2021-11-19 13:29:29,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:29:29,871 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:29:29,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:29:29,872 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:29:29,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2021-11-19 13:29:32,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:29:32,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 4264 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:29:32,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:29:38,012 INFO L134 CoverageAnalysis]: Checked inductivity of 3856 backedges. 1008 proven. 0 refuted. 0 times theorem prover too weak. 2848 trivial. 0 not checked. [2021-11-19 13:29:38,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:29:40,807 INFO L134 CoverageAnalysis]: Checked inductivity of 3856 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3856 trivial. 0 not checked. [2021-11-19 13:29:40,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [374583513] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:29:40,807 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:29:40,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8, 8] total 10 [2021-11-19 13:29:40,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221871557] [2021-11-19 13:29:40,809 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:29:40,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:29:40,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:29:40,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:29:40,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:29:40,812 INFO L87 Difference]: Start difference. First operand 7721 states and 10759 transitions. Second operand has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 2 states have call successors, (196), 2 states have call predecessors, (196), 2 states have return successors, (195), 2 states have call predecessors, (195), 2 states have call successors, (195) [2021-11-19 13:29:41,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:29:41,708 INFO L93 Difference]: Finished difference Result 15427 states and 21529 transitions. [2021-11-19 13:29:41,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:29:41,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 2 states have call successors, (196), 2 states have call predecessors, (196), 2 states have return successors, (195), 2 states have call predecessors, (195), 2 states have call successors, (195) Word has length 1152 [2021-11-19 13:29:41,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:29:41,741 INFO L225 Difference]: With dead ends: 15427 [2021-11-19 13:29:41,741 INFO L226 Difference]: Without dead ends: 7723 [2021-11-19 13:29:41,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4604 GetRequests, 4596 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:29:41,765 INFO L933 BasicCegarLoop]: 5221 mSDtfsCounter, 0 mSDsluCounter, 5216 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10437 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:29:41,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 10437 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:29:41,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7723 states. [2021-11-19 13:29:42,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7723 to 7723. [2021-11-19 13:29:42,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7723 states, 5189 states have (on average 1.238774330314126) internal successors, (6428), 5280 states have internal predecessors, (6428), 2160 states have call successors, (2160), 374 states have call predecessors, (2160), 371 states have return successors, (2173), 2136 states have call predecessors, (2173), 2157 states have call successors, (2173) [2021-11-19 13:29:42,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7723 states to 7723 states and 10761 transitions. [2021-11-19 13:29:42,603 INFO L78 Accepts]: Start accepts. Automaton has 7723 states and 10761 transitions. Word has length 1152 [2021-11-19 13:29:42,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:29:42,604 INFO L470 AbstractCegarLoop]: Abstraction has 7723 states and 10761 transitions. [2021-11-19 13:29:42,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 2 states have call successors, (196), 2 states have call predecessors, (196), 2 states have return successors, (195), 2 states have call predecessors, (195), 2 states have call successors, (195) [2021-11-19 13:29:42,605 INFO L276 IsEmpty]: Start isEmpty. Operand 7723 states and 10761 transitions. [2021-11-19 13:29:42,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1153 [2021-11-19 13:29:42,634 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:29:42,635 INFO L514 BasicCegarLoop]: trace histogram [26, 26, 23, 23, 20, 20, 13, 13, 13, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:29:42,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (38)] Forceful destruction successful, exit code 0 [2021-11-19 13:29:42,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-11-19 13:29:43,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:29:43,050 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:29:43,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:29:43,050 INFO L85 PathProgramCache]: Analyzing trace with hash 2132010489, now seen corresponding path program 1 times [2021-11-19 13:29:43,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:29:43,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1352521077] [2021-11-19 13:29:43,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:29:43,054 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:29:43,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:29:43,055 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:29:43,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-11-19 13:29:46,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:29:46,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 4266 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 13:29:46,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:29:54,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3856 backedges. 180 proven. 3 refuted. 0 times theorem prover too weak. 3673 trivial. 0 not checked. [2021-11-19 13:29:54,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:29:58,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3856 backedges. 3 proven. 51 refuted. 0 times theorem prover too weak. 3802 trivial. 0 not checked. [2021-11-19 13:29:58,491 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:29:58,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1352521077] [2021-11-19 13:29:58,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1352521077] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:29:58,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1936676466] [2021-11-19 13:29:58,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:29:58,492 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:29:58,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:29:58,493 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:29:58,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (40)] Waiting until timeout for monitored process [2021-11-19 13:30:00,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:00,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 4266 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:30:00,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:30:03,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3856 backedges. 609 proven. 0 refuted. 0 times theorem prover too weak. 3247 trivial. 0 not checked. [2021-11-19 13:30:03,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:30:06,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3856 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3856 trivial. 0 not checked. [2021-11-19 13:30:06,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1936676466] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:30:06,490 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:30:06,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8, 8] total 10 [2021-11-19 13:30:06,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542964844] [2021-11-19 13:30:06,492 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:06,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:30:06,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:30:06,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:30:06,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:30:06,495 INFO L87 Difference]: Start difference. First operand 7723 states and 10761 transitions. Second operand has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 2 states have call successors, (147), 2 states have call predecessors, (147), 2 states have return successors, (146), 2 states have call predecessors, (146), 2 states have call successors, (146) [2021-11-19 13:30:07,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:07,145 INFO L93 Difference]: Finished difference Result 15441 states and 21671 transitions. [2021-11-19 13:30:07,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:30:07,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 2 states have call successors, (147), 2 states have call predecessors, (147), 2 states have return successors, (146), 2 states have call predecessors, (146), 2 states have call successors, (146) Word has length 1152 [2021-11-19 13:30:07,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:07,173 INFO L225 Difference]: With dead ends: 15441 [2021-11-19 13:30:07,174 INFO L226 Difference]: Without dead ends: 7735 [2021-11-19 13:30:07,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4604 GetRequests, 4596 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:30:07,198 INFO L933 BasicCegarLoop]: 5224 mSDtfsCounter, 10 mSDsluCounter, 5206 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 10430 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:07,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 10430 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:30:07,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7735 states. [2021-11-19 13:30:07,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7735 to 7727. [2021-11-19 13:30:07,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7727 states, 5193 states have (on average 1.2385904101675331) internal successors, (6432), 5284 states have internal predecessors, (6432), 2160 states have call successors, (2160), 374 states have call predecessors, (2160), 371 states have return successors, (2173), 2136 states have call predecessors, (2173), 2157 states have call successors, (2173) [2021-11-19 13:30:08,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7727 states to 7727 states and 10765 transitions. [2021-11-19 13:30:08,004 INFO L78 Accepts]: Start accepts. Automaton has 7727 states and 10765 transitions. Word has length 1152 [2021-11-19 13:30:08,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:08,006 INFO L470 AbstractCegarLoop]: Abstraction has 7727 states and 10765 transitions. [2021-11-19 13:30:08,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 2 states have call successors, (147), 2 states have call predecessors, (147), 2 states have return successors, (146), 2 states have call predecessors, (146), 2 states have call successors, (146) [2021-11-19 13:30:08,006 INFO L276 IsEmpty]: Start isEmpty. Operand 7727 states and 10765 transitions. [2021-11-19 13:30:08,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1153 [2021-11-19 13:30:08,034 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:08,034 INFO L514 BasicCegarLoop]: trace histogram [26, 26, 23, 23, 20, 20, 13, 13, 13, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:30:08,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-11-19 13:30:08,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (40)] Forceful destruction successful, exit code 0 [2021-11-19 13:30:08,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:30:08,435 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:30:08,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:08,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1862845111, now seen corresponding path program 1 times [2021-11-19 13:30:08,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:30:08,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1541039823] [2021-11-19 13:30:08,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:08,441 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:30:08,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:30:08,442 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:30:08,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-11-19 13:30:11,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:12,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 4266 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 13:30:12,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:30:19,450 INFO L134 CoverageAnalysis]: Checked inductivity of 3856 backedges. 180 proven. 3 refuted. 0 times theorem prover too weak. 3673 trivial. 0 not checked. [2021-11-19 13:30:19,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:30:23,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3856 backedges. 3 proven. 51 refuted. 0 times theorem prover too weak. 3802 trivial. 0 not checked. [2021-11-19 13:30:23,304 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:30:23,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1541039823] [2021-11-19 13:30:23,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1541039823] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:30:23,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1164355595] [2021-11-19 13:30:23,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:23,305 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:30:23,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:30:23,308 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:30:23,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (42)] Waiting until timeout for monitored process [2021-11-19 13:30:25,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:25,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 4266 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:30:25,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:30:32,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3856 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 3610 trivial. 0 not checked. [2021-11-19 13:30:32,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:30:35,465 INFO L134 CoverageAnalysis]: Checked inductivity of 3856 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3856 trivial. 0 not checked. [2021-11-19 13:30:35,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1164355595] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:30:35,465 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:30:35,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [8, 8] total 15 [2021-11-19 13:30:35,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077296603] [2021-11-19 13:30:35,467 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:35,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:30:35,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:30:35,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:30:35,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-11-19 13:30:35,469 INFO L87 Difference]: Start difference. First operand 7727 states and 10765 transitions. Second operand has 8 states, 8 states have (on average 76.875) internal successors, (615), 8 states have internal predecessors, (615), 2 states have call successors, (226), 2 states have call predecessors, (226), 2 states have return successors, (225), 2 states have call predecessors, (225), 2 states have call successors, (225) [2021-11-19 13:30:37,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:37,864 INFO L93 Difference]: Finished difference Result 16623 states and 23232 transitions. [2021-11-19 13:30:37,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:30:37,866 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 76.875) internal successors, (615), 8 states have internal predecessors, (615), 2 states have call successors, (226), 2 states have call predecessors, (226), 2 states have return successors, (225), 2 states have call predecessors, (225), 2 states have call successors, (225) Word has length 1152 [2021-11-19 13:30:37,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:37,891 INFO L225 Difference]: With dead ends: 16623 [2021-11-19 13:30:37,891 INFO L226 Difference]: Without dead ends: 8913 [2021-11-19 13:30:37,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4608 GetRequests, 4593 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2021-11-19 13:30:37,907 INFO L933 BasicCegarLoop]: 6016 mSDtfsCounter, 2111 mSDsluCounter, 28769 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 617 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2199 SdHoareTripleChecker+Valid, 34785 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 617 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:37,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2199 Valid, 34785 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [617 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 13:30:37,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8913 states. [2021-11-19 13:30:38,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8913 to 7733. [2021-11-19 13:30:38,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7733 states, 5199 states have (on average 1.2383150605885747) internal successors, (6438), 5290 states have internal predecessors, (6438), 2160 states have call successors, (2160), 374 states have call predecessors, (2160), 371 states have return successors, (2173), 2136 states have call predecessors, (2173), 2157 states have call successors, (2173) [2021-11-19 13:30:38,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7733 states to 7733 states and 10771 transitions. [2021-11-19 13:30:38,648 INFO L78 Accepts]: Start accepts. Automaton has 7733 states and 10771 transitions. Word has length 1152 [2021-11-19 13:30:38,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:38,649 INFO L470 AbstractCegarLoop]: Abstraction has 7733 states and 10771 transitions. [2021-11-19 13:30:38,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 76.875) internal successors, (615), 8 states have internal predecessors, (615), 2 states have call successors, (226), 2 states have call predecessors, (226), 2 states have return successors, (225), 2 states have call predecessors, (225), 2 states have call successors, (225) [2021-11-19 13:30:38,649 INFO L276 IsEmpty]: Start isEmpty. Operand 7733 states and 10771 transitions. [2021-11-19 13:30:38,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1153 [2021-11-19 13:30:38,668 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:38,668 INFO L514 BasicCegarLoop]: trace histogram [26, 26, 23, 23, 20, 20, 13, 13, 13, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:30:38,739 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (41)] Ended with exit code 0 [2021-11-19 13:30:38,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (42)] Forceful destruction successful, exit code 0 [2021-11-19 13:30:39,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:30:39,070 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:30:39,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:39,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1301955189, now seen corresponding path program 1 times [2021-11-19 13:30:39,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:30:39,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816629933] [2021-11-19 13:30:39,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:39,074 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:30:39,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:30:39,075 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:30:39,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-11-19 13:30:42,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:42,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 4269 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 13:30:42,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:30:50,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3856 backedges. 180 proven. 3 refuted. 0 times theorem prover too weak. 3673 trivial. 0 not checked. [2021-11-19 13:30:50,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:30:53,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3856 backedges. 3 proven. 51 refuted. 0 times theorem prover too weak. 3802 trivial. 0 not checked. [2021-11-19 13:30:53,959 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:30:53,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816629933] [2021-11-19 13:30:53,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816629933] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:30:53,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1966364889] [2021-11-19 13:30:53,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:53,960 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:30:53,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:30:53,962 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:30:53,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (44)] Waiting until timeout for monitored process [2021-11-19 13:30:56,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:56,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 4269 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:30:56,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:31:02,488 INFO L134 CoverageAnalysis]: Checked inductivity of 3856 backedges. 372 proven. 0 refuted. 0 times theorem prover too weak. 3484 trivial. 0 not checked. [2021-11-19 13:31:02,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:31:05,024 INFO L134 CoverageAnalysis]: Checked inductivity of 3856 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3856 trivial. 0 not checked. [2021-11-19 13:31:05,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1966364889] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:31:05,024 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:31:05,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [8, 8] total 11 [2021-11-19 13:31:05,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761343227] [2021-11-19 13:31:05,026 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:31:05,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:31:05,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:31:05,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:31:05,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:31:05,030 INFO L87 Difference]: Start difference. First operand 7733 states and 10771 transitions. Second operand has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 2 states have call successors, (211), 2 states have call predecessors, (211), 2 states have return successors, (210), 2 states have call predecessors, (210), 2 states have call successors, (210) [2021-11-19 13:31:07,310 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:31:08,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:08,920 INFO L93 Difference]: Finished difference Result 15594 states and 21730 transitions. [2021-11-19 13:31:08,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:31:08,921 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 2 states have call successors, (211), 2 states have call predecessors, (211), 2 states have return successors, (210), 2 states have call predecessors, (210), 2 states have call successors, (210) Word has length 1152 [2021-11-19 13:31:08,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:08,947 INFO L225 Difference]: With dead ends: 15594 [2021-11-19 13:31:08,948 INFO L226 Difference]: Without dead ends: 7878 [2021-11-19 13:31:08,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4606 GetRequests, 4596 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:31:08,967 INFO L933 BasicCegarLoop]: 5426 mSDtfsCounter, 2421 mSDsluCounter, 7571 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 858 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2423 SdHoareTripleChecker+Valid, 12997 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 858 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:08,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2423 Valid, 12997 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [858 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-19 13:31:08,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7878 states. [2021-11-19 13:31:09,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7878 to 7733. [2021-11-19 13:31:09,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7733 states, 5199 states have (on average 1.2379303712252356) internal successors, (6436), 5290 states have internal predecessors, (6436), 2160 states have call successors, (2160), 374 states have call predecessors, (2160), 371 states have return successors, (2173), 2136 states have call predecessors, (2173), 2157 states have call successors, (2173) [2021-11-19 13:31:09,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7733 states to 7733 states and 10769 transitions. [2021-11-19 13:31:09,816 INFO L78 Accepts]: Start accepts. Automaton has 7733 states and 10769 transitions. Word has length 1152 [2021-11-19 13:31:09,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:09,817 INFO L470 AbstractCegarLoop]: Abstraction has 7733 states and 10769 transitions. [2021-11-19 13:31:09,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 2 states have call successors, (211), 2 states have call predecessors, (211), 2 states have return successors, (210), 2 states have call predecessors, (210), 2 states have call successors, (210) [2021-11-19 13:31:09,817 INFO L276 IsEmpty]: Start isEmpty. Operand 7733 states and 10769 transitions. [2021-11-19 13:31:09,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1161 [2021-11-19 13:31:09,845 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:09,846 INFO L514 BasicCegarLoop]: trace histogram [26, 26, 23, 23, 20, 20, 13, 13, 13, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:31:09,928 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (43)] Ended with exit code 0 [2021-11-19 13:31:10,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (44)] Forceful destruction successful, exit code 0 [2021-11-19 13:31:10,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:31:10,270 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:31:10,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:10,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1429644185, now seen corresponding path program 1 times [2021-11-19 13:31:10,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:31:10,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [223921999] [2021-11-19 13:31:10,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:10,274 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:31:10,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:31:10,275 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:31:10,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-11-19 13:31:13,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:13,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 4332 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 13:31:13,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:31:21,259 INFO L134 CoverageAnalysis]: Checked inductivity of 3856 backedges. 180 proven. 3 refuted. 0 times theorem prover too weak. 3673 trivial. 0 not checked. [2021-11-19 13:31:21,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:31:25,087 INFO L134 CoverageAnalysis]: Checked inductivity of 3856 backedges. 3 proven. 51 refuted. 0 times theorem prover too weak. 3802 trivial. 0 not checked. [2021-11-19 13:31:25,087 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:31:25,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [223921999] [2021-11-19 13:31:25,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [223921999] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:31:25,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [742321292] [2021-11-19 13:31:25,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:25,088 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:31:25,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:31:25,102 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:31:25,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (46)] Waiting until timeout for monitored process [2021-11-19 13:31:27,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:27,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 4332 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:31:27,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:31:33,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3856 backedges. 372 proven. 0 refuted. 0 times theorem prover too weak. 3484 trivial. 0 not checked. [2021-11-19 13:31:33,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:31:36,455 INFO L134 CoverageAnalysis]: Checked inductivity of 3856 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3856 trivial. 0 not checked. [2021-11-19 13:31:36,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [742321292] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:31:36,455 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:31:36,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [8, 8] total 11 [2021-11-19 13:31:36,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509202399] [2021-11-19 13:31:36,456 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:31:36,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:31:36,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:31:36,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:31:36,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:31:36,459 INFO L87 Difference]: Start difference. First operand 7733 states and 10769 transitions. Second operand has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 2 states have call successors, (211), 2 states have call predecessors, (211), 2 states have return successors, (210), 2 states have call predecessors, (210), 2 states have call successors, (210) [2021-11-19 13:31:37,875 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:31:39,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:39,955 INFO L93 Difference]: Finished difference Result 15647 states and 21805 transitions. [2021-11-19 13:31:39,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:31:39,956 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 2 states have call successors, (211), 2 states have call predecessors, (211), 2 states have return successors, (210), 2 states have call predecessors, (210), 2 states have call successors, (210) Word has length 1160 [2021-11-19 13:31:39,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:39,992 INFO L225 Difference]: With dead ends: 15647 [2021-11-19 13:31:39,992 INFO L226 Difference]: Without dead ends: 7931 [2021-11-19 13:31:40,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4638 GetRequests, 4628 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:31:40,010 INFO L933 BasicCegarLoop]: 5503 mSDtfsCounter, 2424 mSDsluCounter, 7725 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 850 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2434 SdHoareTripleChecker+Valid, 13228 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 850 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:40,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2434 Valid, 13228 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [850 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-19 13:31:40,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7931 states. [2021-11-19 13:31:40,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7931 to 7733. [2021-11-19 13:31:40,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7733 states, 5199 states have (on average 1.2375456818618966) internal successors, (6434), 5290 states have internal predecessors, (6434), 2160 states have call successors, (2160), 374 states have call predecessors, (2160), 371 states have return successors, (2173), 2136 states have call predecessors, (2173), 2157 states have call successors, (2173) [2021-11-19 13:31:40,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7733 states to 7733 states and 10767 transitions. [2021-11-19 13:31:40,846 INFO L78 Accepts]: Start accepts. Automaton has 7733 states and 10767 transitions. Word has length 1160 [2021-11-19 13:31:40,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:40,847 INFO L470 AbstractCegarLoop]: Abstraction has 7733 states and 10767 transitions. [2021-11-19 13:31:40,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 2 states have call successors, (211), 2 states have call predecessors, (211), 2 states have return successors, (210), 2 states have call predecessors, (210), 2 states have call successors, (210) [2021-11-19 13:31:40,847 INFO L276 IsEmpty]: Start isEmpty. Operand 7733 states and 10767 transitions. [2021-11-19 13:31:40,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1316 [2021-11-19 13:31:40,878 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:40,879 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 25, 25, 22, 22, 13, 13, 13, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:31:40,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-11-19 13:31:41,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (46)] Ended with exit code 0 [2021-11-19 13:31:41,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:31:41,302 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-19 13:31:41,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:41,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1997696284, now seen corresponding path program 1 times [2021-11-19 13:31:41,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:31:41,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1033169422] [2021-11-19 13:31:41,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:41,306 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:31:41,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:31:41,307 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:31:41,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf149d19-d102-44be-8b93-e6ee7ddba4cb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-11-19 13:31:44,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:45,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 4727 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 13:31:45,309 INFO L286 TraceCheckSpWp]: Computing forward predicates...