./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 9fae230e52bc983f4c0251cc946bfbc52943e9b9d698b0f694e42af65a9c74e9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:09:22,184 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:09:22,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:09:22,229 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:09:22,230 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:09:22,232 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:09:22,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:09:22,238 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:09:22,240 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:09:22,242 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:09:22,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:09:22,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:09:22,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:09:22,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:09:22,251 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:09:22,253 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:09:22,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:09:22,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:09:22,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:09:22,263 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:09:22,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:09:22,271 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:09:22,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:09:22,276 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:09:22,288 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:09:22,290 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:09:22,291 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:09:22,293 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:09:22,295 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:09:22,296 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:09:22,298 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:09:22,299 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:09:22,302 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:09:22,304 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:09:22,306 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:09:22,306 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:09:22,307 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:09:22,308 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:09:22,308 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:09:22,309 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:09:22,310 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:09:22,312 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 23:09:22,376 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:09:22,377 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:09:22,378 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:09:22,379 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:09:22,379 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:09:22,379 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:09:22,380 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:09:22,380 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:09:22,388 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:09:22,389 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:09:22,390 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:09:22,390 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:09:22,391 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:09:22,391 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:09:22,391 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:09:22,392 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:09:22,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:09:22,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:09:22,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:09:22,394 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:09:22,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:09:22,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:09:22,395 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:09:22,395 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:09:22,395 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:09:22,396 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:09:22,396 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:09:22,396 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:09:22,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:09:22,397 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:09:22,397 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:09:22,398 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:09:22,398 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:09:22,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:09:22,399 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:09:22,399 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:09:22,399 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:09:22,400 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_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9fae230e52bc983f4c0251cc946bfbc52943e9b9d698b0f694e42af65a9c74e9 [2021-11-12 23:09:22,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:09:22,814 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:09:22,817 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:09:22,819 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:09:22,821 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:09:22,823 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i [2021-11-12 23:09:22,907 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/data/f76dff7b7/9969461563d9425a821544671add87fc/FLAG9c026a12c [2021-11-12 23:09:24,065 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:09:24,067 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i [2021-11-12 23:09:24,120 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/data/f76dff7b7/9969461563d9425a821544671add87fc/FLAG9c026a12c [2021-11-12 23:09:24,356 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/data/f76dff7b7/9969461563d9425a821544671add87fc [2021-11-12 23:09:24,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:09:24,361 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:09:24,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:09:24,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:09:24,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:09:24,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:09:24" (1/1) ... [2021-11-12 23:09:24,369 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63e7e984 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:24, skipping insertion in model container [2021-11-12 23:09:24,370 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:09:24" (1/1) ... [2021-11-12 23:09:24,378 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:09:24,553 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:09:26,498 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:09:26,504 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:09:26,730 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:09:27,510 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292221,292234] [2021-11-12 23:09:27,514 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292387,292400] [2021-11-12 23:09:27,515 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292551,292564] [2021-11-12 23:09:27,515 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292716,292729] [2021-11-12 23:09:27,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:09:27,644 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 23:09:27,645 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7f82ade8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:27, skipping insertion in model container [2021-11-12 23:09:27,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:09:27,646 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:09:27,648 INFO L158 Benchmark]: Toolchain (without parser) took 3285.93ms. Allocated memory was 98.6MB in the beginning and 132.1MB in the end (delta: 33.6MB). Free memory was 61.4MB in the beginning and 85.9MB in the end (delta: -24.5MB). Peak memory consumption was 44.1MB. Max. memory is 16.1GB. [2021-11-12 23:09:27,649 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 75.5MB. Free memory is still 52.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:09:27,651 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3282.94ms. Allocated memory was 98.6MB in the beginning and 132.1MB in the end (delta: 33.6MB). Free memory was 61.4MB in the beginning and 85.9MB in the end (delta: -24.5MB). Peak memory consumption was 44.1MB. Max. memory is 16.1GB. [2021-11-12 23:09:27,653 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 75.5MB. Free memory is still 52.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3282.94ms. Allocated memory was 98.6MB in the beginning and 132.1MB in the end (delta: 33.6MB). Free memory was 61.4MB in the beginning and 85.9MB in the end (delta: -24.5MB). Peak memory consumption was 44.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6045]: 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_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 9fae230e52bc983f4c0251cc946bfbc52943e9b9d698b0f694e42af65a9c74e9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:09:30,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:09:30,294 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:09:30,341 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:09:30,341 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:09:30,343 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:09:30,345 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:09:30,349 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:09:30,351 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:09:30,353 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:09:30,354 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:09:30,356 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:09:30,357 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:09:30,368 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:09:30,370 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:09:30,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:09:30,375 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:09:30,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:09:30,386 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:09:30,395 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:09:30,397 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:09:30,409 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:09:30,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:09:30,412 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:09:30,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:09:30,419 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:09:30,420 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:09:30,421 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:09:30,423 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:09:30,425 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:09:30,426 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:09:30,428 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:09:30,430 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:09:30,432 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:09:30,434 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:09:30,434 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:09:30,435 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:09:30,436 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:09:30,444 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:09:30,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:09:30,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:09:30,456 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 23:09:30,508 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:09:30,508 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:09:30,509 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:09:30,509 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:09:30,510 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:09:30,510 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:09:30,510 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:09:30,510 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:09:30,510 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:09:30,511 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:09:30,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:09:30,512 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:09:30,512 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:09:30,512 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:09:30,512 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:09:30,513 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:09:30,513 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:09:30,513 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:09:30,513 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:09:30,513 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:09:30,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:09:30,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:09:30,514 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:09:30,514 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:09:30,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:09:30,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:09:30,515 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:09:30,515 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:09:30,515 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:09:30,515 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:09:30,515 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:09:30,516 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:09:30,516 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:09:30,516 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_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9fae230e52bc983f4c0251cc946bfbc52943e9b9d698b0f694e42af65a9c74e9 [2021-11-12 23:09:30,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:09:30,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:09:30,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:09:30,983 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:09:30,983 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:09:30,985 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i [2021-11-12 23:09:31,080 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/data/3d155634e/35f52cb3dbaf433aacf70f3e1e315a25/FLAGb11cfd01c [2021-11-12 23:09:32,319 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:09:32,320 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i [2021-11-12 23:09:32,405 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/data/3d155634e/35f52cb3dbaf433aacf70f3e1e315a25/FLAGb11cfd01c [2021-11-12 23:09:32,564 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/data/3d155634e/35f52cb3dbaf433aacf70f3e1e315a25 [2021-11-12 23:09:32,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:09:32,567 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:09:32,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:09:32,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:09:32,573 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:09:32,574 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:09:32" (1/1) ... [2021-11-12 23:09:32,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77082f3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:32, skipping insertion in model container [2021-11-12 23:09:32,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:09:32" (1/1) ... [2021-11-12 23:09:32,584 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:09:32,768 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:09:35,975 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292221,292234] [2021-11-12 23:09:35,978 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292387,292400] [2021-11-12 23:09:35,979 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292551,292564] [2021-11-12 23:09:35,980 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292716,292729] [2021-11-12 23:09:36,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:09:36,094 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:09:36,161 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:09:36,560 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292221,292234] [2021-11-12 23:09:36,561 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292387,292400] [2021-11-12 23:09:36,561 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292551,292564] [2021-11-12 23:09:36,562 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292716,292729] [2021-11-12 23:09:36,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:09:36,608 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:09:37,051 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292221,292234] [2021-11-12 23:09:37,052 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292387,292400] [2021-11-12 23:09:37,053 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292551,292564] [2021-11-12 23:09:37,053 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292716,292729] [2021-11-12 23:09:37,068 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:09:37,311 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:09:37,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:37 WrapperNode [2021-11-12 23:09:37,312 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:09:37,314 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:09:37,314 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:09:37,314 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:09:37,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:37" (1/1) ... [2021-11-12 23:09:37,526 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:37" (1/1) ... [2021-11-12 23:09:37,783 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:09:37,784 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:09:37,784 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:09:37,784 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:09:37,794 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:37" (1/1) ... [2021-11-12 23:09:37,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:37" (1/1) ... [2021-11-12 23:09:37,847 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:37" (1/1) ... [2021-11-12 23:09:37,848 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:37" (1/1) ... [2021-11-12 23:09:38,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:37" (1/1) ... [2021-11-12 23:09:38,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:37" (1/1) ... [2021-11-12 23:09:38,081 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:37" (1/1) ... [2021-11-12 23:09:38,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:09:38,115 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:09:38,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:09:38,116 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:09:38,117 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:37" (1/1) ... [2021-11-12 23:09:38,125 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:09:38,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:09:38,154 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:09:38,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:09:38,210 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_txfree [2021-11-12 23:09:38,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_txfree [2021-11-12 23:09:38,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 23:09:38,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 23:09:38,211 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2021-11-12 23:09:38,211 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2021-11-12 23:09:38,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 23:09:38,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-12 23:09:38,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-12 23:09:38,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-12 23:09:38,212 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-12 23:09:38,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-12 23:09:38,212 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-12 23:09:38,213 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-12 23:09:38,213 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_tx_timeout [2021-11-12 23:09:38,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_tx_timeout [2021-11-12 23:09:38,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-12 23:09:38,213 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-12 23:09:38,214 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-12 23:09:38,214 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-12 23:09:38,215 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-12 23:09:38,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-12 23:09:38,215 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mii_mutex_of_ipg_nic_private [2021-11-12 23:09:38,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mii_mutex_of_ipg_nic_private [2021-11-12 23:09:38,215 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-12 23:09:38,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-12 23:09:38,216 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-12 23:09:38,216 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-12 23:09:38,217 INFO L130 BoogieDeclarations]: Found specification of procedure init_tfdlist [2021-11-12 23:09:38,217 INFO L138 BoogieDeclarations]: Found implementation of procedure init_tfdlist [2021-11-12 23:09:38,217 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-12 23:09:38,217 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-12 23:09:38,218 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-12 23:09:38,218 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-12 23:09:38,218 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-11-12 23:09:38,218 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-11-12 23:09:38,218 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_set_multicast_list [2021-11-12 23:09:38,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_set_multicast_list [2021-11-12 23:09:38,219 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2021-11-12 23:09:38,220 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2021-11-12 23:09:38,220 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-12 23:09:38,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-12 23:09:38,221 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-12 23:09:38,222 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-12 23:09:38,223 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-12 23:09:38,223 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-12 23:09:38,223 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-12 23:09:38,223 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-12 23:09:38,224 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_tx_clear [2021-11-12 23:09:38,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_tx_clear [2021-11-12 23:09:38,224 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_rx_clear [2021-11-12 23:09:38,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_rx_clear [2021-11-12 23:09:38,225 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2021-11-12 23:09:38,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2021-11-12 23:09:38,226 INFO L130 BoogieDeclarations]: Found specification of procedure read_eeprom [2021-11-12 23:09:38,226 INFO L138 BoogieDeclarations]: Found implementation of procedure read_eeprom [2021-11-12 23:09:38,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:09:38,227 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-12 23:09:38,227 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-12 23:09:38,228 INFO L130 BoogieDeclarations]: Found specification of procedure skb_checksum_none_assert [2021-11-12 23:09:38,228 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_checksum_none_assert [2021-11-12 23:09:38,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:09:38,229 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-12 23:09:38,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-12 23:09:38,230 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-12 23:09:38,230 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-12 23:09:38,230 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-11-12 23:09:38,230 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2021-11-12 23:09:38,230 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-12 23:09:38,231 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-12 23:09:38,231 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-12 23:09:38,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-12 23:09:38,231 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-12 23:09:38,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-12 23:09:38,232 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_rx_free_skb [2021-11-12 23:09:38,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_rx_free_skb [2021-11-12 23:09:38,233 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-12 23:09:38,233 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-12 23:09:38,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 23:09:38,234 INFO L130 BoogieDeclarations]: Found specification of procedure send_three_state [2021-11-12 23:09:38,234 INFO L138 BoogieDeclarations]: Found implementation of procedure send_three_state [2021-11-12 23:09:38,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 23:09:38,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-12 23:09:38,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:09:38,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 23:09:38,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 23:09:38,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-12 23:09:38,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:09:38,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 23:09:38,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-12 23:09:38,237 INFO L130 BoogieDeclarations]: Found specification of procedure read_phy_bit [2021-11-12 23:09:38,237 INFO L138 BoogieDeclarations]: Found implementation of procedure read_phy_bit [2021-11-12 23:09:38,238 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-12 23:09:38,238 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-12 23:09:38,238 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_remove [2021-11-12 23:09:38,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_remove [2021-11-12 23:09:38,238 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-12 23:09:38,239 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-12 23:09:38,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-12 23:09:38,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-12 23:09:38,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-12 23:09:38,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-12 23:09:38,240 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-11-12 23:09:38,241 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-11-12 23:09:38,243 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-12 23:09:38,247 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-12 23:09:38,247 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_io_config [2021-11-12 23:09:38,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_io_config [2021-11-12 23:09:38,248 INFO L130 BoogieDeclarations]: Found specification of procedure init_rfdlist [2021-11-12 23:09:38,248 INFO L138 BoogieDeclarations]: Found implementation of procedure init_rfdlist [2021-11-12 23:09:38,249 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_open [2021-11-12 23:09:38,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_open [2021-11-12 23:09:38,250 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-12 23:09:38,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-12 23:09:38,256 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-12 23:09:38,256 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-12 23:09:38,256 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-12 23:09:38,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-12 23:09:38,257 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-12 23:09:38,257 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-12 23:09:38,257 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-12 23:09:38,258 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-12 23:09:38,258 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-12 23:09:38,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-12 23:09:38,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-12 23:09:38,258 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-12 23:09:38,259 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-12 23:09:38,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-12 23:09:38,259 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2021-11-12 23:09:38,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2021-11-12 23:09:38,259 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-12 23:09:38,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-12 23:09:38,260 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-12 23:09:38,260 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-12 23:09:38,260 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-12 23:09:38,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-12 23:09:38,261 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2021-11-12 23:09:38,261 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2021-11-12 23:09:38,261 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-12 23:09:38,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-12 23:09:38,262 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-12 23:09:38,262 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-12 23:09:38,262 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-12 23:09:38,262 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-12 23:09:38,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-12 23:09:38,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-12 23:09:38,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-12 23:09:38,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-12 23:09:38,263 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2021-11-12 23:09:38,263 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_type_trans [2021-11-12 23:09:38,264 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-12 23:09:38,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-12 23:09:38,264 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_get_stats [2021-11-12 23:09:38,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_get_stats [2021-11-12 23:09:38,264 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nway_reset [2021-11-12 23:09:38,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nway_reset [2021-11-12 23:09:38,265 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mii_mutex_of_ipg_nic_private [2021-11-12 23:09:38,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mii_mutex_of_ipg_nic_private [2021-11-12 23:09:38,265 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_rxrestore [2021-11-12 23:09:38,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_rxrestore [2021-11-12 23:09:38,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:09:38,266 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_stop [2021-11-12 23:09:38,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_stop [2021-11-12 23:09:38,266 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-12 23:09:38,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-12 23:09:38,267 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-12 23:09:38,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-12 23:09:38,267 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_config_autoneg [2021-11-12 23:09:38,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_config_autoneg [2021-11-12 23:09:38,267 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-12 23:09:38,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-12 23:09:38,268 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-12 23:09:38,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-12 23:09:38,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:09:38,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-12 23:09:38,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_ipg_pci_driver_exit_13_2 [2021-11-12 23:09:38,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_ipg_pci_driver_exit_13_2 [2021-11-12 23:09:38,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-12 23:09:38,271 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-11-12 23:09:38,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-11-12 23:09:38,271 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-12 23:09:38,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-12 23:09:38,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-12 23:09:38,272 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_ioaddr [2021-11-12 23:09:38,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_ioaddr [2021-11-12 23:09:38,272 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2021-11-12 23:09:38,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2021-11-12 23:09:38,273 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-12 23:09:38,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-12 23:09:38,273 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_reset [2021-11-12 23:09:38,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_reset [2021-11-12 23:09:38,274 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-12 23:09:38,274 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-12 23:09:38,274 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-12 23:09:38,274 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-12 23:09:38,274 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-12 23:09:38,275 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-12 23:09:38,275 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-12 23:09:38,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-12 23:09:38,275 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_get_rxbuff [2021-11-12 23:09:38,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_get_rxbuff [2021-11-12 23:09:38,276 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_write_phy_ctl [2021-11-12 23:09:38,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_write_phy_ctl [2021-11-12 23:09:38,276 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-11-12 23:09:38,276 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-11-12 23:09:38,276 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2021-11-12 23:09:38,277 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2021-11-12 23:09:38,277 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-12 23:09:38,277 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-12 23:09:38,277 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-12 23:09:38,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-12 23:09:38,277 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_rx_check_error [2021-11-12 23:09:38,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_rx_check_error [2021-11-12 23:09:38,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-12 23:09:38,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-12 23:09:38,278 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_drive_phy_ctl_low_high [2021-11-12 23:09:38,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_drive_phy_ctl_low_high [2021-11-12 23:09:38,279 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-11-12 23:09:38,279 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-11-12 23:09:38,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:09:38,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:09:45,291 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-12 23:10:24,399 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-12 23:10:24,481 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:10:24,482 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-12 23:10:24,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:10:24 BoogieIcfgContainer [2021-11-12 23:10:24,488 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:10:24,490 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:10:24,491 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:10:24,494 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:10:24,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:09:32" (1/3) ... [2021-11-12 23:10:24,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18e48453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:10:24, skipping insertion in model container [2021-11-12 23:10:24,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:37" (2/3) ... [2021-11-12 23:10:24,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18e48453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:10:24, skipping insertion in model container [2021-11-12 23:10:24,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:10:24" (3/3) ... [2021-11-12 23:10:24,498 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i [2021-11-12 23:10:24,505 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:10:24,505 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-12 23:10:24,574 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:10:24,582 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:10:24,582 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-12 23:10:24,656 INFO L276 IsEmpty]: Start isEmpty. Operand has 1656 states, 1118 states have (on average 1.2531305903398926) internal successors, (1401), 1153 states have internal predecessors, (1401), 443 states have call successors, (443), 95 states have call predecessors, (443), 94 states have return successors, (437), 434 states have call predecessors, (437), 437 states have call successors, (437) [2021-11-12 23:10:24,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-12 23:10:24,680 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:10:24,681 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:10:24,682 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:10:24,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:10:24,693 INFO L85 PathProgramCache]: Analyzing trace with hash 979223461, now seen corresponding path program 1 times [2021-11-12 23:10:24,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:10:24,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2047264398] [2021-11-12 23:10:24,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:10:24,717 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:10:24,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:10:24,721 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:10:24,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:10:26,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:10:26,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 1097 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:10:26,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:10:27,111 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2021-11-12 23:10:27,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:10:27,790 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-11-12 23:10:27,791 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:10:27,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2047264398] [2021-11-12 23:10:27,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2047264398] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:10:27,794 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:10:27,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:10:27,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102285528] [2021-11-12 23:10:27,798 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:10:27,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:10:27,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:10:27,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:10:27,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:10:27,854 INFO L87 Difference]: Start difference. First operand has 1656 states, 1118 states have (on average 1.2531305903398926) internal successors, (1401), 1153 states have internal predecessors, (1401), 443 states have call successors, (443), 95 states have call predecessors, (443), 94 states have return successors, (437), 434 states have call predecessors, (437), 437 states have call successors, (437) Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-12 23:10:30,079 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:10:38,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:10:38,349 INFO L93 Difference]: Finished difference Result 6393 states and 9018 transitions. [2021-11-12 23:10:38,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:10:38,359 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 116 [2021-11-12 23:10:38,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:10:38,456 INFO L225 Difference]: With dead ends: 6393 [2021-11-12 23:10:38,456 INFO L226 Difference]: Without dead ends: 4741 [2021-11-12 23:10:38,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:10:38,494 INFO L933 BasicCegarLoop]: 3076 mSDtfsCounter, 4324 mSDsluCounter, 3963 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9265.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4324 SdHoareTripleChecker+Valid, 7039 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 79.80ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9841.37ms IncrementalHoareTripleChecker+Time [2021-11-12 23:10:38,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4324 Valid, 7039 Invalid, 900 Unknown, 0 Unchecked, 79.80ms Time], IncrementalHoareTripleChecker [19 Valid, 880 Invalid, 1 Unknown, 0 Unchecked, 9841.37ms Time] [2021-11-12 23:10:38,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4741 states. [2021-11-12 23:10:39,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4741 to 4723. [2021-11-12 23:10:39,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4723 states, 3204 states have (on average 1.2484394506866416) internal successors, (4000), 3302 states have internal predecessors, (4000), 1241 states have call successors, (1241), 276 states have call predecessors, (1241), 275 states have return successors, (1237), 1228 states have call predecessors, (1237), 1237 states have call successors, (1237) [2021-11-12 23:10:39,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4723 states to 4723 states and 6478 transitions. [2021-11-12 23:10:39,126 INFO L78 Accepts]: Start accepts. Automaton has 4723 states and 6478 transitions. Word has length 116 [2021-11-12 23:10:39,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:10:39,130 INFO L470 AbstractCegarLoop]: Abstraction has 4723 states and 6478 transitions. [2021-11-12 23:10:39,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-12 23:10:39,131 INFO L276 IsEmpty]: Start isEmpty. Operand 4723 states and 6478 transitions. [2021-11-12 23:10:39,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-12 23:10:39,146 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:10:39,147 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:10:39,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:10:39,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:10:39,372 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:10:39,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:10:39,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1385221388, now seen corresponding path program 1 times [2021-11-12 23:10:39,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:10:39,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [722152190] [2021-11-12 23:10:39,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:10:39,376 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:10:39,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:10:39,381 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:10:39,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:10:40,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:10:41,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 1131 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:10:41,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:10:41,512 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2021-11-12 23:10:41,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:10:42,031 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-11-12 23:10:42,031 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:10:42,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [722152190] [2021-11-12 23:10:42,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [722152190] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:10:42,032 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:10:42,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:10:42,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016690780] [2021-11-12 23:10:42,033 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:10:42,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:10:42,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:10:42,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:10:42,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:10:42,038 INFO L87 Difference]: Start difference. First operand 4723 states and 6478 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-12 23:10:44,250 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:10:52,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:10:52,905 INFO L93 Difference]: Finished difference Result 17917 states and 24559 transitions. [2021-11-12 23:10:52,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:10:52,906 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 117 [2021-11-12 23:10:52,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:10:53,043 INFO L225 Difference]: With dead ends: 17917 [2021-11-12 23:10:53,043 INFO L226 Difference]: Without dead ends: 13215 [2021-11-12 23:10:53,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:10:53,074 INFO L933 BasicCegarLoop]: 3014 mSDtfsCounter, 4190 mSDsluCounter, 4012 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9477.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4190 SdHoareTripleChecker+Valid, 7026 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.96ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10032.70ms IncrementalHoareTripleChecker+Time [2021-11-12 23:10:53,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4190 Valid, 7026 Invalid, 952 Unknown, 0 Unchecked, 42.96ms Time], IncrementalHoareTripleChecker [26 Valid, 925 Invalid, 1 Unknown, 0 Unchecked, 10032.70ms Time] [2021-11-12 23:10:53,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13215 states. [2021-11-12 23:10:53,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13215 to 13169. [2021-11-12 23:10:53,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13169 states, 8854 states have (on average 1.2471199457872149) internal successors, (11042), 9138 states have internal predecessors, (11042), 3501 states have call successors, (3501), 818 states have call predecessors, (3501), 811 states have return successors, (3503), 3446 states have call predecessors, (3503), 3497 states have call successors, (3503) [2021-11-12 23:10:53,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13169 states to 13169 states and 18046 transitions. [2021-11-12 23:10:53,982 INFO L78 Accepts]: Start accepts. Automaton has 13169 states and 18046 transitions. Word has length 117 [2021-11-12 23:10:53,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:10:53,983 INFO L470 AbstractCegarLoop]: Abstraction has 13169 states and 18046 transitions. [2021-11-12 23:10:53,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-12 23:10:53,985 INFO L276 IsEmpty]: Start isEmpty. Operand 13169 states and 18046 transitions. [2021-11-12 23:10:53,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-12 23:10:53,997 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:10:53,997 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:10:54,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:10:54,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:10:54,211 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:10:54,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:10:54,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1129808871, now seen corresponding path program 1 times [2021-11-12 23:10:54,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:10:54,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1639382425] [2021-11-12 23:10:54,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:10:54,215 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:10:54,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:10:54,221 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:10:54,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:10:55,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:10:55,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 1170 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:10:55,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:10:56,574 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2021-11-12 23:10:56,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:10:57,175 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-11-12 23:10:57,175 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:10:57,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1639382425] [2021-11-12 23:10:57,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1639382425] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:10:57,176 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:10:57,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:10:57,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128214347] [2021-11-12 23:10:57,176 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:10:57,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:10:57,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:10:57,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:10:57,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:10:57,178 INFO L87 Difference]: Start difference. First operand 13169 states and 18046 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-12 23:10:59,335 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:11:08,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:11:08,407 INFO L93 Difference]: Finished difference Result 34312 states and 47086 transitions. [2021-11-12 23:11:08,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:11:08,408 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 128 [2021-11-12 23:11:08,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:11:08,604 INFO L225 Difference]: With dead ends: 34312 [2021-11-12 23:11:08,605 INFO L226 Difference]: Without dead ends: 21164 [2021-11-12 23:11:08,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:11:08,691 INFO L933 BasicCegarLoop]: 3346 mSDtfsCounter, 4385 mSDsluCounter, 2921 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 525 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9538.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4385 SdHoareTripleChecker+Valid, 6267 SdHoareTripleChecker+Invalid, 1471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 48.23ms SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10303.23ms IncrementalHoareTripleChecker+Time [2021-11-12 23:11:08,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4385 Valid, 6267 Invalid, 1471 Unknown, 0 Unchecked, 48.23ms Time], IncrementalHoareTripleChecker [525 Valid, 945 Invalid, 1 Unknown, 0 Unchecked, 10303.23ms Time] [2021-11-12 23:11:08,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21164 states. [2021-11-12 23:11:10,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21164 to 21122. [2021-11-12 23:11:10,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21122 states, 14342 states have (on average 1.2549853576906986) internal successors, (17999), 14789 states have internal predecessors, (17999), 5455 states have call successors, (5455), 1333 states have call predecessors, (5455), 1322 states have return successors, (5455), 5385 states have call predecessors, (5455), 5451 states have call successors, (5455) [2021-11-12 23:11:10,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21122 states to 21122 states and 28909 transitions. [2021-11-12 23:11:10,190 INFO L78 Accepts]: Start accepts. Automaton has 21122 states and 28909 transitions. Word has length 128 [2021-11-12 23:11:10,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:11:10,191 INFO L470 AbstractCegarLoop]: Abstraction has 21122 states and 28909 transitions. [2021-11-12 23:11:10,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-12 23:11:10,192 INFO L276 IsEmpty]: Start isEmpty. Operand 21122 states and 28909 transitions. [2021-11-12 23:11:10,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-12 23:11:10,199 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:11:10,200 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 8, 8, 8, 8, 8, 8, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:11:10,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:11:10,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:11:10,423 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:11:10,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:11:10,424 INFO L85 PathProgramCache]: Analyzing trace with hash 2124354506, now seen corresponding path program 1 times [2021-11-12 23:11:10,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:11:10,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [288144905] [2021-11-12 23:11:10,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:11:10,427 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:11:10,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:11:10,432 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:11:10,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:11:12,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:11:12,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 1222 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:11:12,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:11:14,366 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-11-12 23:11:14,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:11:15,742 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-11-12 23:11:15,742 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:11:15,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [288144905] [2021-11-12 23:11:15,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [288144905] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:11:15,743 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:11:15,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-12 23:11:15,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973871642] [2021-11-12 23:11:15,743 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:11:15,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:11:15,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:11:15,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:11:15,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:11:15,745 INFO L87 Difference]: Start difference. First operand 21122 states and 28909 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (37), 4 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-12 23:11:17,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:11:17,150 INFO L93 Difference]: Finished difference Result 21128 states and 28914 transitions. [2021-11-12 23:11:17,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:11:17,151 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (37), 4 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 172 [2021-11-12 23:11:17,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:11:17,271 INFO L225 Difference]: With dead ends: 21128 [2021-11-12 23:11:17,272 INFO L226 Difference]: Without dead ends: 21126 [2021-11-12 23:11:17,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:11:17,287 INFO L933 BasicCegarLoop]: 2238 mSDtfsCounter, 2164 mSDsluCounter, 6707 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 247.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2167 SdHoareTripleChecker+Valid, 8945 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.72ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 252.26ms IncrementalHoareTripleChecker+Time [2021-11-12 23:11:17,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2167 Valid, 8945 Invalid, 19 Unknown, 0 Unchecked, 26.72ms Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 252.26ms Time] [2021-11-12 23:11:17,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21126 states. [2021-11-12 23:11:18,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21126 to 21126. [2021-11-12 23:11:18,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21126 states, 14345 states have (on average 1.2549320320669222) internal successors, (18002), 14792 states have internal predecessors, (18002), 5455 states have call successors, (5455), 1334 states have call predecessors, (5455), 1323 states have return successors, (5455), 5385 states have call predecessors, (5455), 5451 states have call successors, (5455) [2021-11-12 23:11:18,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21126 states to 21126 states and 28912 transitions. [2021-11-12 23:11:18,778 INFO L78 Accepts]: Start accepts. Automaton has 21126 states and 28912 transitions. Word has length 172 [2021-11-12 23:11:18,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:11:18,780 INFO L470 AbstractCegarLoop]: Abstraction has 21126 states and 28912 transitions. [2021-11-12 23:11:18,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (37), 4 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-12 23:11:18,781 INFO L276 IsEmpty]: Start isEmpty. Operand 21126 states and 28912 transitions. [2021-11-12 23:11:18,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-12 23:11:18,789 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:11:18,789 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 8, 8, 8, 8, 8, 8, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:11:18,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:11:19,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:11:19,003 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:11:19,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:11:19,004 INFO L85 PathProgramCache]: Analyzing trace with hash 977899430, now seen corresponding path program 1 times [2021-11-12 23:11:19,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:11:19,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [700750954] [2021-11-12 23:11:19,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:11:19,006 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:11:19,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:11:19,008 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:11:19,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:11:20,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:11:20,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 1229 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:11:20,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:11:23,231 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-11-12 23:11:23,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:11:24,509 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-11-12 23:11:24,510 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:11:24,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [700750954] [2021-11-12 23:11:24,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [700750954] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:11:24,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:11:24,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-11-12 23:11:24,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737882511] [2021-11-12 23:11:24,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:11:24,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:11:24,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:11:24,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:11:24,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:11:24,513 INFO L87 Difference]: Start difference. First operand 21126 states and 28912 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 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) [2021-11-12 23:11:25,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:11:25,876 INFO L93 Difference]: Finished difference Result 21132 states and 28917 transitions. [2021-11-12 23:11:25,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:11:25,877 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 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 177 [2021-11-12 23:11:25,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:11:25,996 INFO L225 Difference]: With dead ends: 21132 [2021-11-12 23:11:25,996 INFO L226 Difference]: Without dead ends: 21130 [2021-11-12 23:11:26,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:11:26,012 INFO L933 BasicCegarLoop]: 2241 mSDtfsCounter, 2188 mSDsluCounter, 4471 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 204.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2190 SdHoareTripleChecker+Valid, 6712 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.73ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 232.56ms IncrementalHoareTripleChecker+Time [2021-11-12 23:11:26,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2190 Valid, 6712 Invalid, 13 Unknown, 0 Unchecked, 14.73ms Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 232.56ms Time] [2021-11-12 23:11:26,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21130 states. [2021-11-12 23:11:27,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21130 to 21130. [2021-11-12 23:11:27,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21130 states, 14348 states have (on average 1.254878728742682) internal successors, (18005), 14795 states have internal predecessors, (18005), 5455 states have call successors, (5455), 1335 states have call predecessors, (5455), 1324 states have return successors, (5455), 5385 states have call predecessors, (5455), 5451 states have call successors, (5455) [2021-11-12 23:11:27,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21130 states to 21130 states and 28915 transitions. [2021-11-12 23:11:27,354 INFO L78 Accepts]: Start accepts. Automaton has 21130 states and 28915 transitions. Word has length 177 [2021-11-12 23:11:27,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:11:27,356 INFO L470 AbstractCegarLoop]: Abstraction has 21130 states and 28915 transitions. [2021-11-12 23:11:27,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 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) [2021-11-12 23:11:27,356 INFO L276 IsEmpty]: Start isEmpty. Operand 21130 states and 28915 transitions. [2021-11-12 23:11:27,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-12 23:11:27,365 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:11:27,366 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 8, 8, 8, 8, 8, 8, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:11:27,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:11:27,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:11:27,592 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:11:27,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:11:27,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1803864822, now seen corresponding path program 1 times [2021-11-12 23:11:27,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:11:27,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1766005194] [2021-11-12 23:11:27,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:11:27,594 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:11:27,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:11:27,595 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:11:27,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:11:28,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:11:29,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 1236 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:11:29,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:11:31,409 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2021-11-12 23:11:31,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:11:32,628 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2021-11-12 23:11:32,629 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:11:32,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1766005194] [2021-11-12 23:11:32,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1766005194] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:11:32,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:11:32,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-11-12 23:11:32,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635854522] [2021-11-12 23:11:32,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:11:32,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:11:32,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:11:32,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:11:32,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:11:32,630 INFO L87 Difference]: Start difference. First operand 21130 states and 28915 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 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) [2021-11-12 23:11:34,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:11:34,188 INFO L93 Difference]: Finished difference Result 21136 states and 28920 transitions. [2021-11-12 23:11:34,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:11:34,189 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 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 182 [2021-11-12 23:11:34,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:11:34,321 INFO L225 Difference]: With dead ends: 21136 [2021-11-12 23:11:34,321 INFO L226 Difference]: Without dead ends: 21132 [2021-11-12 23:11:34,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:11:34,336 INFO L933 BasicCegarLoop]: 2241 mSDtfsCounter, 2160 mSDsluCounter, 4497 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 202.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2161 SdHoareTripleChecker+Valid, 6738 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.26ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 230.42ms IncrementalHoareTripleChecker+Time [2021-11-12 23:11:34,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2161 Valid, 6738 Invalid, 15 Unknown, 0 Unchecked, 21.26ms Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 230.42ms Time] [2021-11-12 23:11:34,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21132 states. [2021-11-12 23:11:35,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21132 to 21132. [2021-11-12 23:11:35,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21132 states, 14350 states have (on average 1.254773519163763) internal successors, (18006), 14796 states have internal predecessors, (18006), 5455 states have call successors, (5455), 1336 states have call predecessors, (5455), 1324 states have return successors, (5455), 5385 states have call predecessors, (5455), 5451 states have call successors, (5455) [2021-11-12 23:11:35,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21132 states to 21132 states and 28916 transitions. [2021-11-12 23:11:35,782 INFO L78 Accepts]: Start accepts. Automaton has 21132 states and 28916 transitions. Word has length 182 [2021-11-12 23:11:35,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:11:35,785 INFO L470 AbstractCegarLoop]: Abstraction has 21132 states and 28916 transitions. [2021-11-12 23:11:35,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 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) [2021-11-12 23:11:35,785 INFO L276 IsEmpty]: Start isEmpty. Operand 21132 states and 28916 transitions. [2021-11-12 23:11:35,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-12 23:11:35,797 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:11:35,798 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:11:35,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:11:36,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:11:36,011 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:11:36,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:11:36,012 INFO L85 PathProgramCache]: Analyzing trace with hash 726296038, now seen corresponding path program 1 times [2021-11-12 23:11:36,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:11:36,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [433470550] [2021-11-12 23:11:36,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:11:36,014 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:11:36,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:11:36,016 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:11:36,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:11:37,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:11:37,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 1243 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:11:37,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:11:40,183 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 412 trivial. 0 not checked. [2021-11-12 23:11:40,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:11:41,385 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 412 trivial. 0 not checked. [2021-11-12 23:11:41,385 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:11:41,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [433470550] [2021-11-12 23:11:41,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [433470550] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:11:41,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:11:41,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-11-12 23:11:41,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43551864] [2021-11-12 23:11:41,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:11:41,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:11:41,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:11:41,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:11:41,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:11:41,387 INFO L87 Difference]: Start difference. First operand 21132 states and 28916 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-12 23:11:42,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:11:42,628 INFO L93 Difference]: Finished difference Result 21132 states and 28916 transitions. [2021-11-12 23:11:42,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:11:42,629 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 187 [2021-11-12 23:11:42,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:11:42,751 INFO L225 Difference]: With dead ends: 21132 [2021-11-12 23:11:42,752 INFO L226 Difference]: Without dead ends: 21013 [2021-11-12 23:11:42,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 367 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:11:42,768 INFO L933 BasicCegarLoop]: 2239 mSDtfsCounter, 2184 mSDsluCounter, 4470 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 176.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2184 SdHoareTripleChecker+Valid, 6709 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.17ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 206.13ms IncrementalHoareTripleChecker+Time [2021-11-12 23:11:42,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2184 Valid, 6709 Invalid, 8 Unknown, 0 Unchecked, 13.17ms Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 206.13ms Time] [2021-11-12 23:11:42,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21013 states. [2021-11-12 23:11:44,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21013 to 20950. [2021-11-12 23:11:44,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20950 states, 14236 states have (on average 1.25175611126721) internal successors, (17820), 14655 states have internal predecessors, (17820), 5394 states have call successors, (5394), 1322 states have call predecessors, (5394), 1318 states have return successors, (5398), 5358 states have call predecessors, (5398), 5394 states have call successors, (5398) [2021-11-12 23:11:44,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20950 states to 20950 states and 28612 transitions. [2021-11-12 23:11:44,852 INFO L78 Accepts]: Start accepts. Automaton has 20950 states and 28612 transitions. Word has length 187 [2021-11-12 23:11:44,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:11:44,853 INFO L470 AbstractCegarLoop]: Abstraction has 20950 states and 28612 transitions. [2021-11-12 23:11:44,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-12 23:11:44,853 INFO L276 IsEmpty]: Start isEmpty. Operand 20950 states and 28612 transitions. [2021-11-12 23:11:44,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-12 23:11:44,864 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:11:44,865 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 8, 8, 8, 8, 8, 8, 4, 4, 4, 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] [2021-11-12 23:11:44,904 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-12 23:11:45,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:11:45,079 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:11:45,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:11:45,080 INFO L85 PathProgramCache]: Analyzing trace with hash -673030977, now seen corresponding path program 1 times [2021-11-12 23:11:45,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:11:45,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1509259900] [2021-11-12 23:11:45,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:11:45,082 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:11:45,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:11:45,084 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:11:45,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:11:46,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:11:46,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 1313 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:11:46,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:11:47,814 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2021-11-12 23:11:47,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:11:48,600 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2021-11-12 23:11:48,600 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:11:48,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1509259900] [2021-11-12 23:11:48,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1509259900] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:11:48,600 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:11:48,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:11:48,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741375925] [2021-11-12 23:11:48,601 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:11:48,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:11:48,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:11:48,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:11:48,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:11:48,603 INFO L87 Difference]: Start difference. First operand 20950 states and 28612 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2021-11-12 23:11:50,740 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:11:59,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:11:59,645 INFO L93 Difference]: Finished difference Result 57669 states and 78871 transitions. [2021-11-12 23:11:59,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:11:59,646 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 193 [2021-11-12 23:11:59,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:11:59,894 INFO L225 Difference]: With dead ends: 57669 [2021-11-12 23:11:59,894 INFO L226 Difference]: Without dead ends: 37453 [2021-11-12 23:11:59,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:11:59,996 INFO L933 BasicCegarLoop]: 4027 mSDtfsCounter, 3689 mSDsluCounter, 3202 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 38 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8517.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3689 SdHoareTripleChecker+Valid, 7229 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.72ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9025.13ms IncrementalHoareTripleChecker+Time [2021-11-12 23:11:59,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3689 Valid, 7229 Invalid, 982 Unknown, 0 Unchecked, 24.72ms Time], IncrementalHoareTripleChecker [38 Valid, 943 Invalid, 1 Unknown, 0 Unchecked, 9025.13ms Time] [2021-11-12 23:12:00,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37453 states. [2021-11-12 23:12:02,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37453 to 37439. [2021-11-12 23:12:02,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37439 states, 25518 states have (on average 1.2556234814640646) internal successors, (32041), 26260 states have internal predecessors, (32041), 9560 states have call successors, (9560), 2363 states have call predecessors, (9560), 2359 states have return successors, (9564), 9515 states have call predecessors, (9564), 9560 states have call successors, (9564) [2021-11-12 23:12:02,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37439 states to 37439 states and 51165 transitions. [2021-11-12 23:12:02,688 INFO L78 Accepts]: Start accepts. Automaton has 37439 states and 51165 transitions. Word has length 193 [2021-11-12 23:12:02,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:12:02,690 INFO L470 AbstractCegarLoop]: Abstraction has 37439 states and 51165 transitions. [2021-11-12 23:12:02,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2021-11-12 23:12:02,690 INFO L276 IsEmpty]: Start isEmpty. Operand 37439 states and 51165 transitions. [2021-11-12 23:12:02,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-11-12 23:12:02,726 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:12:02,727 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:12:02,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:12:02,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:12:02,952 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:12:02,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:12:02,953 INFO L85 PathProgramCache]: Analyzing trace with hash 426839448, now seen corresponding path program 1 times [2021-11-12 23:12:02,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:12:02,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1386797145] [2021-11-12 23:12:02,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:12:02,955 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:12:02,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:12:02,957 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:12:02,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:12:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:12:04,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 1486 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:12:04,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:12:05,540 INFO L134 CoverageAnalysis]: Checked inductivity of 695 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2021-11-12 23:12:05,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:12:06,517 INFO L134 CoverageAnalysis]: Checked inductivity of 695 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 654 trivial. 0 not checked. [2021-11-12 23:12:06,517 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:12:06,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1386797145] [2021-11-12 23:12:06,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1386797145] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:12:06,518 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:12:06,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:12:06,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544149919] [2021-11-12 23:12:06,518 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:12:06,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:12:06,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:12:06,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:12:06,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:12:06,521 INFO L87 Difference]: Start difference. First operand 37439 states and 51165 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 4 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) [2021-11-12 23:12:08,709 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:12:19,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:12:19,758 INFO L93 Difference]: Finished difference Result 84646 states and 115710 transitions. [2021-11-12 23:12:19,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:12:19,759 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 4 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) Word has length 293 [2021-11-12 23:12:19,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:12:20,253 INFO L225 Difference]: With dead ends: 84646 [2021-11-12 23:12:20,253 INFO L226 Difference]: Without dead ends: 47941 [2021-11-12 23:12:20,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 582 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:12:20,384 INFO L933 BasicCegarLoop]: 4015 mSDtfsCounter, 3724 mSDsluCounter, 2875 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 322 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9300.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3724 SdHoareTripleChecker+Valid, 6890 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.93ms SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9951.46ms IncrementalHoareTripleChecker+Time [2021-11-12 23:12:20,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3724 Valid, 6890 Invalid, 1255 Unknown, 0 Unchecked, 26.93ms Time], IncrementalHoareTripleChecker [322 Valid, 932 Invalid, 1 Unknown, 0 Unchecked, 9951.46ms Time] [2021-11-12 23:12:20,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47941 states. [2021-11-12 23:12:23,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47941 to 47927. [2021-11-12 23:12:23,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47927 states, 32714 states have (on average 1.2563734181084552) internal successors, (41101), 33658 states have internal predecessors, (41101), 12182 states have call successors, (12182), 3033 states have call predecessors, (12182), 3029 states have return successors, (12186), 12131 states have call predecessors, (12186), 12182 states have call successors, (12186) [2021-11-12 23:12:23,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47927 states to 47927 states and 65469 transitions. [2021-11-12 23:12:23,658 INFO L78 Accepts]: Start accepts. Automaton has 47927 states and 65469 transitions. Word has length 293 [2021-11-12 23:12:23,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:12:23,660 INFO L470 AbstractCegarLoop]: Abstraction has 47927 states and 65469 transitions. [2021-11-12 23:12:23,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 4 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) [2021-11-12 23:12:23,660 INFO L276 IsEmpty]: Start isEmpty. Operand 47927 states and 65469 transitions. [2021-11-12 23:12:23,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2021-11-12 23:12:23,701 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:12:23,702 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-12 23:12:23,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:12:23,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:12:23,917 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:12:23,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:12:23,917 INFO L85 PathProgramCache]: Analyzing trace with hash 839433899, now seen corresponding path program 1 times [2021-11-12 23:12:23,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:12:24,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [988814334] [2021-11-12 23:12:24,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:12:24,147 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:12:24,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:12:24,167 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:12:24,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 23:12:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:12:25,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 1491 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:12:25,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:12:26,860 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2021-11-12 23:12:26,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:12:27,835 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 654 trivial. 0 not checked. [2021-11-12 23:12:27,836 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:12:27,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [988814334] [2021-11-12 23:12:27,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [988814334] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:12:27,836 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:12:27,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:12:27,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115124637] [2021-11-12 23:12:27,837 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:12:27,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:12:27,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:12:27,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:12:27,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:12:27,838 INFO L87 Difference]: Start difference. First operand 47927 states and 65469 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 4 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) [2021-11-12 23:12:29,981 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:12:40,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:12:40,816 INFO L93 Difference]: Finished difference Result 106034 states and 144832 transitions. [2021-11-12 23:12:40,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:12:40,817 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 4 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) Word has length 298 [2021-11-12 23:12:40,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:12:41,139 INFO L225 Difference]: With dead ends: 106034 [2021-11-12 23:12:41,140 INFO L226 Difference]: Without dead ends: 58841 [2021-11-12 23:12:41,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 592 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:12:41,307 INFO L933 BasicCegarLoop]: 4044 mSDtfsCounter, 3941 mSDsluCounter, 2680 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 490 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8535.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3941 SdHoareTripleChecker+Valid, 6724 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.88ms SdHoareTripleChecker+Time, 490 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9173.12ms IncrementalHoareTripleChecker+Time [2021-11-12 23:12:41,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3941 Valid, 6724 Invalid, 1278 Unknown, 0 Unchecked, 25.88ms Time], IncrementalHoareTripleChecker [490 Valid, 787 Invalid, 1 Unknown, 0 Unchecked, 9173.12ms Time] [2021-11-12 23:12:41,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58841 states. [2021-11-12 23:12:45,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58841 to 58827. [2021-11-12 23:12:45,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58827 states, 40210 states have (on average 1.2566774434220342) internal successors, (50531), 41360 states have internal predecessors, (50531), 14876 states have call successors, (14876), 3743 states have call predecessors, (14876), 3739 states have return successors, (14880), 14819 states have call predecessors, (14880), 14876 states have call successors, (14880) [2021-11-12 23:12:45,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58827 states to 58827 states and 80287 transitions. [2021-11-12 23:12:45,740 INFO L78 Accepts]: Start accepts. Automaton has 58827 states and 80287 transitions. Word has length 298 [2021-11-12 23:12:45,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:12:45,741 INFO L470 AbstractCegarLoop]: Abstraction has 58827 states and 80287 transitions. [2021-11-12 23:12:45,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 4 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (33), 4 states have call predecessors, (33), 4 states have call successors, (33) [2021-11-12 23:12:45,744 INFO L276 IsEmpty]: Start isEmpty. Operand 58827 states and 80287 transitions. [2021-11-12 23:12:45,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2021-11-12 23:12:45,800 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:12:45,801 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 11, 11, 11, 8, 8, 8, 8, 8, 8, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-12 23:12:45,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:12:46,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:12:46,028 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:12:46,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:12:46,028 INFO L85 PathProgramCache]: Analyzing trace with hash -665013715, now seen corresponding path program 1 times [2021-11-12 23:12:46,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:12:46,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [716137955] [2021-11-12 23:12:46,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:12:46,031 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:12:46,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:12:46,037 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:12:46,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41bd2092-907d-493c-8ccf-cf4d3f89ebb5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 23:12:47,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:12:48,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 1624 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:12:48,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:12:49,170 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 219 proven. 0 refuted. 0 times theorem prover too weak. 706 trivial. 0 not checked. [2021-11-12 23:12:49,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:12:50,201 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 849 trivial. 0 not checked. [2021-11-12 23:12:50,202 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:12:50,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [716137955] [2021-11-12 23:12:50,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [716137955] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:12:50,203 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:12:50,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:12:50,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175596461] [2021-11-12 23:12:50,204 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:12:50,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:12:50,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:12:50,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:12:50,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:12:50,206 INFO L87 Difference]: Start difference. First operand 58827 states and 80287 transitions. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 4 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (37), 4 states have call predecessors, (37), 4 states have call successors, (37) [2021-11-12 23:12:52,363 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:13:03,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:13:03,729 INFO L93 Difference]: Finished difference Result 127446 states and 173966 transitions. [2021-11-12 23:13:03,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:13:03,730 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 4 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (37), 4 states have call predecessors, (37), 4 states have call successors, (37) Word has length 358 [2021-11-12 23:13:03,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:13:04,043 INFO L225 Difference]: With dead ends: 127446 [2021-11-12 23:13:04,044 INFO L226 Difference]: Without dead ends: 69353 [2021-11-12 23:13:04,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 714 GetRequests, 712 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:13:04,190 INFO L933 BasicCegarLoop]: 3866 mSDtfsCounter, 3703 mSDsluCounter, 3168 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 33 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8358.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3703 SdHoareTripleChecker+Valid, 7034 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.67ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8855.43ms IncrementalHoareTripleChecker+Time [2021-11-12 23:13:04,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3703 Valid, 7034 Invalid, 978 Unknown, 0 Unchecked, 23.67ms Time], IncrementalHoareTripleChecker [33 Valid, 944 Invalid, 1 Unknown, 0 Unchecked, 8855.43ms Time] [2021-11-12 23:13:04,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69353 states.