./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1055fad-3693-4c44-9d6d-de361673a23a/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1055fad-3693-4c44-9d6d-de361673a23a/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1055fad-3693-4c44-9d6d-de361673a23a/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1055fad-3693-4c44-9d6d-de361673a23a/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1055fad-3693-4c44-9d6d-de361673a23a/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1055fad-3693-4c44-9d6d-de361673a23a/bin/uautomizer-Dbtcem3rbc --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4ef1ebb9985ad6dadbe7cf99c72a7d7cbd507bc2d179a6afec5353fae325d63f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:40:04,658 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:40:04,661 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:40:04,695 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:40:04,696 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:40:04,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:40:04,698 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:40:04,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:40:04,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:40:04,703 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:40:04,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:40:04,706 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:40:04,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:40:04,707 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:40:04,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:40:04,710 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:40:04,711 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:40:04,712 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:40:04,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:40:04,716 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:40:04,718 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:40:04,720 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:40:04,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:40:04,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:40:04,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:40:04,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:40:04,728 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:40:04,729 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:40:04,729 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:40:04,731 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:40:04,731 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:40:04,732 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:40:04,733 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:40:04,734 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:40:04,735 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:40:04,736 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:40:04,736 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:40:04,737 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:40:04,737 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:40:04,738 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:40:04,739 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:40:04,740 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1055fad-3693-4c44-9d6d-de361673a23a/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:40:04,764 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:40:04,764 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:40:04,765 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:40:04,765 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:40:04,766 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:40:04,766 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:40:04,767 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:40:04,767 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:40:04,768 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:40:04,768 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:40:04,768 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:40:04,769 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:40:04,769 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:40:04,769 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:40:04,769 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:40:04,770 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:40:04,770 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:40:04,770 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:40:04,771 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:40:04,771 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:40:04,771 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:40:04,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:40:04,772 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:40:04,772 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:40:04,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:40:04,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:40:04,773 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:40:04,773 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:40:04,774 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:40:04,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:40:04,774 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:40:04,774 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:40:04,775 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:40:04,775 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_e1055fad-3693-4c44-9d6d-de361673a23a/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1055fad-3693-4c44-9d6d-de361673a23a/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ef1ebb9985ad6dadbe7cf99c72a7d7cbd507bc2d179a6afec5353fae325d63f [2022-11-02 20:40:05,071 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:40:05,098 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:40:05,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:40:05,104 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:40:05,105 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:40:05,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1055fad-3693-4c44-9d6d-de361673a23a/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i [2022-11-02 20:40:05,174 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1055fad-3693-4c44-9d6d-de361673a23a/bin/uautomizer-Dbtcem3rbc/data/a9130b041/d8cc7e2fc004499bb578eb219806f86c/FLAGad7f738b4 [2022-11-02 20:40:05,925 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:40:05,926 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1055fad-3693-4c44-9d6d-de361673a23a/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i [2022-11-02 20:40:05,971 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1055fad-3693-4c44-9d6d-de361673a23a/bin/uautomizer-Dbtcem3rbc/data/a9130b041/d8cc7e2fc004499bb578eb219806f86c/FLAGad7f738b4 [2022-11-02 20:40:06,161 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1055fad-3693-4c44-9d6d-de361673a23a/bin/uautomizer-Dbtcem3rbc/data/a9130b041/d8cc7e2fc004499bb578eb219806f86c [2022-11-02 20:40:06,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:40:06,165 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:40:06,169 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:40:06,169 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:40:06,173 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:40:06,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:40:06" (1/1) ... [2022-11-02 20:40:06,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64f59dfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:06, skipping insertion in model container [2022-11-02 20:40:06,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:40:06" (1/1) ... [2022-11-02 20:40:06,182 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:40:06,241 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:40:07,127 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1055fad-3693-4c44-9d6d-de361673a23a/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i[76469,76482] [2022-11-02 20:40:07,190 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1055fad-3693-4c44-9d6d-de361673a23a/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i[79042,79055] [2022-11-02 20:40:07,199 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1055fad-3693-4c44-9d6d-de361673a23a/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i[79451,79464] [2022-11-02 20:40:07,224 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:40:07,242 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:40:07,321 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1055fad-3693-4c44-9d6d-de361673a23a/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i[76469,76482] [2022-11-02 20:40:07,343 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1055fad-3693-4c44-9d6d-de361673a23a/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i[79042,79055] [2022-11-02 20:40:07,346 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1055fad-3693-4c44-9d6d-de361673a23a/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i[79451,79464] [2022-11-02 20:40:07,355 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:40:07,539 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:40:07,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:07 WrapperNode [2022-11-02 20:40:07,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:40:07,541 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:40:07,541 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:40:07,541 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:40:07,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:07" (1/1) ... [2022-11-02 20:40:07,611 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:07" (1/1) ... [2022-11-02 20:40:07,716 INFO L138 Inliner]: procedures = 489, calls = 127, calls flagged for inlining = 45, calls inlined = 117, statements flattened = 1701 [2022-11-02 20:40:07,717 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:40:07,718 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:40:07,718 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:40:07,729 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:40:07,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:07" (1/1) ... [2022-11-02 20:40:07,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:07" (1/1) ... [2022-11-02 20:40:07,770 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:07" (1/1) ... [2022-11-02 20:40:07,771 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:07" (1/1) ... [2022-11-02 20:40:07,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:07" (1/1) ... [2022-11-02 20:40:07,833 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:07" (1/1) ... [2022-11-02 20:40:07,841 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:07" (1/1) ... [2022-11-02 20:40:07,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:07" (1/1) ... [2022-11-02 20:40:07,862 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:40:07,863 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:40:07,863 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:40:07,863 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:40:07,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:07" (1/1) ... [2022-11-02 20:40:07,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:40:07,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1055fad-3693-4c44-9d6d-de361673a23a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:40:07,935 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1055fad-3693-4c44-9d6d-de361673a23a/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:40:07,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1055fad-3693-4c44-9d6d-de361673a23a/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:40:07,996 INFO L130 BoogieDeclarations]: Found specification of procedure Stealer [2022-11-02 20:40:07,997 INFO L138 BoogieDeclarations]: Found implementation of procedure Stealer [2022-11-02 20:40:07,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 20:40:07,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:40:07,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 20:40:07,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:40:07,999 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-02 20:40:07,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:40:07,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:40:07,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:40:08,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:40:08,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:40:08,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:40:08,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:40:08,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:40:08,004 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:40:08,525 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:40:08,528 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:40:10,895 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:40:11,386 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:40:11,386 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-11-02 20:40:11,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:40:11 BoogieIcfgContainer [2022-11-02 20:40:11,392 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:40:11,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:40:11,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:40:11,401 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:40:11,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:40:06" (1/3) ... [2022-11-02 20:40:11,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36aa4c2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:40:11, skipping insertion in model container [2022-11-02 20:40:11,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:40:07" (2/3) ... [2022-11-02 20:40:11,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36aa4c2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:40:11, skipping insertion in model container [2022-11-02 20:40:11,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:40:11" (3/3) ... [2022-11-02 20:40:11,404 INFO L112 eAbstractionObserver]: Analyzing ICFG workstealqueue_mutex-2.i [2022-11-02 20:40:11,439 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:40:11,451 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:40:11,451 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-11-02 20:40:11,451 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:40:11,692 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-02 20:40:11,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1607 places, 1648 transitions, 3304 flow [2022-11-02 20:40:13,420 INFO L130 PetriNetUnfolder]: 81/3053 cut-off events. [2022-11-02 20:40:13,421 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 20:40:13,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3059 conditions, 3053 events. 81/3053 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 14085 event pairs, 0 based on Foata normal form. 0/2959 useless extension candidates. Maximal degree in co-relation 1558. Up to 4 conditions per place. [2022-11-02 20:40:13,481 INFO L82 GeneralOperation]: Start removeDead. Operand has 1607 places, 1648 transitions, 3304 flow [2022-11-02 20:40:13,510 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1607 places, 1648 transitions, 3304 flow [2022-11-02 20:40:13,530 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:40:13,541 INFO L357 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=PETRI_NET, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@689c0e82, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:40:13,541 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-02 20:40:13,567 INFO L130 PetriNetUnfolder]: 11/178 cut-off events. [2022-11-02 20:40:13,567 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:40:13,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:13,569 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-11-02 20:40:13,570 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-02 20:40:13,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:13,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1556878210, now seen corresponding path program 1 times [2022-11-02 20:40:13,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:13,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549519492] [2022-11-02 20:40:13,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:13,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:14,282 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:40:14,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:14,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549519492] [2022-11-02 20:40:14,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549519492] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:14,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:14,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:40:14,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520481941] [2022-11-02 20:40:14,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:14,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:40:14,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:14,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:40:14,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:40:14,354 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 1537 out of 1648 [2022-11-02 20:40:14,370 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1607 places, 1648 transitions, 3304 flow. Second operand has 3 states, 3 states have (on average 1541.0) internal successors, (4623), 3 states have internal predecessors, (4623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:14,371 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:40:14,371 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1537 of 1648 [2022-11-02 20:40:14,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:40:22,199 INFO L130 PetriNetUnfolder]: 789/14659 cut-off events. [2022-11-02 20:40:22,200 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:40:22,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15859 conditions, 14659 events. 789/14659 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 129350 event pairs, 232 based on Foata normal form. 303/14658 useless extension candidates. Maximal degree in co-relation 15665. Up to 611 conditions per place. [2022-11-02 20:40:22,374 INFO L137 encePairwiseOnDemand]: 1614/1648 looper letters, 143 selfloop transitions, 12 changer transitions 9/1695 dead transitions. [2022-11-02 20:40:22,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1604 places, 1695 transitions, 3714 flow [2022-11-02 20:40:22,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:40:22,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:40:22,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4807 transitions. [2022-11-02 20:40:22,405 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9722896440129449 [2022-11-02 20:40:22,406 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 4807 transitions. [2022-11-02 20:40:22,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 4807 transitions. [2022-11-02 20:40:22,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:40:22,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 4807 transitions. [2022-11-02 20:40:22,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 1602.3333333333333) internal successors, (4807), 3 states have internal predecessors, (4807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:22,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1648.0) internal successors, (6592), 4 states have internal predecessors, (6592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:22,461 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1648.0) internal successors, (6592), 4 states have internal predecessors, (6592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:22,463 INFO L175 Difference]: Start difference. First operand has 1607 places, 1648 transitions, 3304 flow. Second operand 3 states and 4807 transitions. [2022-11-02 20:40:22,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1604 places, 1695 transitions, 3714 flow [2022-11-02 20:40:22,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1604 places, 1695 transitions, 3714 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:40:22,531 INFO L231 Difference]: Finished difference. Result has 1605 places, 1624 transitions, 3310 flow [2022-11-02 20:40:22,537 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1648, PETRI_DIFFERENCE_MINUEND_FLOW=3262, PETRI_DIFFERENCE_MINUEND_PLACES=1602, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1615, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3310, PETRI_PLACES=1605, PETRI_TRANSITIONS=1624} [2022-11-02 20:40:22,542 INFO L287 CegarLoopForPetriNet]: 1607 programPoint places, -2 predicate places. [2022-11-02 20:40:22,542 INFO L495 AbstractCegarLoop]: Abstraction has has 1605 places, 1624 transitions, 3310 flow [2022-11-02 20:40:22,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1541.0) internal successors, (4623), 3 states have internal predecessors, (4623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:22,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:22,650 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-11-02 20:40:22,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:40:22,650 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-02 20:40:22,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:22,651 INFO L85 PathProgramCache]: Analyzing trace with hash 899244618, now seen corresponding path program 1 times [2022-11-02 20:40:22,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:22,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760316667] [2022-11-02 20:40:22,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:22,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:22,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:23,016 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:40:23,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:23,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760316667] [2022-11-02 20:40:23,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760316667] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:40:23,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955889992] [2022-11-02 20:40:23,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:23,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:23,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1055fad-3693-4c44-9d6d-de361673a23a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:40:23,021 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1055fad-3693-4c44-9d6d-de361673a23a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:40:23,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1055fad-3693-4c44-9d6d-de361673a23a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:40:23,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:23,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:40:23,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:23,345 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:40:23,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:40:23,418 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:40:23,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955889992] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:40:23,419 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:40:23,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-02 20:40:23,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774756468] [2022-11-02 20:40:23,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:40:23,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:40:23,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:23,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:40:23,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:40:23,441 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 1536 out of 1648 [2022-11-02 20:40:23,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1605 places, 1624 transitions, 3310 flow. Second operand has 10 states, 10 states have (on average 1538.9) internal successors, (15389), 10 states have internal predecessors, (15389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:23,465 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:40:23,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1536 of 1648 [2022-11-02 20:40:23,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:40:30,260 INFO L130 PetriNetUnfolder]: 789/14664 cut-off events. [2022-11-02 20:40:30,260 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-11-02 20:40:30,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15957 conditions, 14664 events. 789/14664 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 128887 event pairs, 174 based on Foata normal form. 2/14385 useless extension candidates. Maximal degree in co-relation 15735. Up to 577 conditions per place. [2022-11-02 20:40:30,371 INFO L137 encePairwiseOnDemand]: 1627/1648 looper letters, 141 selfloop transitions, 26 changer transitions 2/1699 dead transitions. [2022-11-02 20:40:30,371 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1606 places, 1699 transitions, 3800 flow [2022-11-02 20:40:30,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:40:30,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:40:30,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 13995 transitions. [2022-11-02 20:40:30,397 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9435679611650486 [2022-11-02 20:40:30,397 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 13995 transitions. [2022-11-02 20:40:30,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13995 transitions. [2022-11-02 20:40:30,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:40:30,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 13995 transitions. [2022-11-02 20:40:30,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 1555.0) internal successors, (13995), 9 states have internal predecessors, (13995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:30,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1648.0) internal successors, (16480), 10 states have internal predecessors, (16480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:30,475 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1648.0) internal successors, (16480), 10 states have internal predecessors, (16480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:30,475 INFO L175 Difference]: Start difference. First operand has 1605 places, 1624 transitions, 3310 flow. Second operand 9 states and 13995 transitions. [2022-11-02 20:40:30,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1606 places, 1699 transitions, 3800 flow [2022-11-02 20:40:30,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1605 places, 1699 transitions, 3788 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:40:30,511 INFO L231 Difference]: Finished difference. Result has 1608 places, 1634 transitions, 3424 flow [2022-11-02 20:40:30,514 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1648, PETRI_DIFFERENCE_MINUEND_FLOW=3298, PETRI_DIFFERENCE_MINUEND_PLACES=1597, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1601, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3424, PETRI_PLACES=1608, PETRI_TRANSITIONS=1634} [2022-11-02 20:40:30,515 INFO L287 CegarLoopForPetriNet]: 1607 programPoint places, 1 predicate places. [2022-11-02 20:40:30,515 INFO L495 AbstractCegarLoop]: Abstraction has has 1608 places, 1634 transitions, 3424 flow [2022-11-02 20:40:30,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1538.9) internal successors, (15389), 10 states have internal predecessors, (15389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:30,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:30,521 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:30,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1055fad-3693-4c44-9d6d-de361673a23a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:30,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1055fad-3693-4c44-9d6d-de361673a23a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:30,734 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-02 20:40:30,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:30,734 INFO L85 PathProgramCache]: Analyzing trace with hash 367194586, now seen corresponding path program 2 times [2022-11-02 20:40:30,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:30,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692889341] [2022-11-02 20:40:30,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:30,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:30,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:31,269 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:40:31,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:31,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692889341] [2022-11-02 20:40:31,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692889341] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:40:31,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791705760] [2022-11-02 20:40:31,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:40:31,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:31,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1055fad-3693-4c44-9d6d-de361673a23a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:40:31,273 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1055fad-3693-4c44-9d6d-de361673a23a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:40:31,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1055fad-3693-4c44-9d6d-de361673a23a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:40:31,700 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:40:31,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:40:31,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:40:31,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:31,787 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:40:31,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:40:31,904 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:40:31,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791705760] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:40:31,904 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:40:31,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-11-02 20:40:31,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377791198] [2022-11-02 20:40:31,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:40:31,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:40:31,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:31,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:40:31,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:40:31,929 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 1536 out of 1648 [2022-11-02 20:40:31,952 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1608 places, 1634 transitions, 3424 flow. Second operand has 11 states, 11 states have (on average 1538.909090909091) internal successors, (16928), 11 states have internal predecessors, (16928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:31,952 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:40:31,953 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1536 of 1648 [2022-11-02 20:40:31,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:40:39,256 INFO L130 PetriNetUnfolder]: 745/16274 cut-off events. [2022-11-02 20:40:39,256 INFO L131 PetriNetUnfolder]: For 188/188 co-relation queries the response was YES. [2022-11-02 20:40:39,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17640 conditions, 16274 events. 745/16274 cut-off events. For 188/188 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 145873 event pairs, 420 based on Foata normal form. 1/15932 useless extension candidates. Maximal degree in co-relation 17439. Up to 523 conditions per place. [2022-11-02 20:40:39,372 INFO L137 encePairwiseOnDemand]: 1628/1648 looper letters, 143 selfloop transitions, 29 changer transitions 0/1702 dead transitions. [2022-11-02 20:40:39,372 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1619 places, 1702 transitions, 3922 flow [2022-11-02 20:40:39,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:40:39,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-02 20:40:39,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 18605 transitions. [2022-11-02 20:40:39,412 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9407868122977346 [2022-11-02 20:40:39,412 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 18605 transitions. [2022-11-02 20:40:39,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 18605 transitions. [2022-11-02 20:40:39,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:40:39,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 18605 transitions. [2022-11-02 20:40:39,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 1550.4166666666667) internal successors, (18605), 12 states have internal predecessors, (18605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:39,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 1648.0) internal successors, (21424), 13 states have internal predecessors, (21424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:39,516 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 1648.0) internal successors, (21424), 13 states have internal predecessors, (21424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:39,516 INFO L175 Difference]: Start difference. First operand has 1608 places, 1634 transitions, 3424 flow. Second operand 12 states and 18605 transitions. [2022-11-02 20:40:39,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1619 places, 1702 transitions, 3922 flow [2022-11-02 20:40:39,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1618 places, 1702 transitions, 3898 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-02 20:40:39,562 INFO L231 Difference]: Finished difference. Result has 1622 places, 1638 transitions, 3517 flow [2022-11-02 20:40:39,565 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1648, PETRI_DIFFERENCE_MINUEND_FLOW=3402, PETRI_DIFFERENCE_MINUEND_PLACES=1607, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1606, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3517, PETRI_PLACES=1622, PETRI_TRANSITIONS=1638} [2022-11-02 20:40:39,567 INFO L287 CegarLoopForPetriNet]: 1607 programPoint places, 15 predicate places. [2022-11-02 20:40:39,568 INFO L495 AbstractCegarLoop]: Abstraction has has 1622 places, 1638 transitions, 3517 flow [2022-11-02 20:40:39,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1538.909090909091) internal successors, (16928), 11 states have internal predecessors, (16928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:39,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:39,575 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-02 20:40:39,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1055fad-3693-4c44-9d6d-de361673a23a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:39,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1055fad-3693-4c44-9d6d-de361673a23a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:39,789 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-02 20:40:39,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:39,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1932512606, now seen corresponding path program 3 times [2022-11-02 20:40:39,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:39,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157015245] [2022-11-02 20:40:39,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:39,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:40:39,875 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:40:39,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:40:39,991 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:40:39,992 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:40:39,993 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2022-11-02 20:40:39,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-11-02 20:40:40,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2022-11-02 20:40:40,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-11-02 20:40:40,003 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-11-02 20:40:40,003 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-11-02 20:40:40,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:40:40,004 INFO L444 BasicCegarLoop]: Path program histogram: [3, 1] [2022-11-02 20:40:40,007 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:40:40,007 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-02 20:40:40,182 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-02 20:40:40,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1754 places, 1798 transitions, 3614 flow [2022-11-02 20:40:42,030 INFO L130 PetriNetUnfolder]: 128/4653 cut-off events. [2022-11-02 20:40:42,030 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-02 20:40:42,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4667 conditions, 4653 events. 128/4653 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 26851 event pairs, 0 based on Foata normal form. 0/4505 useless extension candidates. Maximal degree in co-relation 3055. Up to 8 conditions per place. [2022-11-02 20:40:42,145 INFO L82 GeneralOperation]: Start removeDead. Operand has 1754 places, 1798 transitions, 3614 flow [2022-11-02 20:40:42,173 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1754 places, 1798 transitions, 3614 flow [2022-11-02 20:40:42,175 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:40:42,176 INFO L357 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=PETRI_NET, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@689c0e82, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:40:42,176 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-02 20:40:42,199 INFO L130 PetriNetUnfolder]: 12/194 cut-off events. [2022-11-02 20:40:42,199 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 20:40:42,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:42,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:42,200 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-02 20:40:42,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:42,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1102222169, now seen corresponding path program 1 times [2022-11-02 20:40:42,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:42,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632212146] [2022-11-02 20:40:42,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:42,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:42,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:42,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:42,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632212146] [2022-11-02 20:40:42,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632212146] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:42,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:42,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:40:42,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976579156] [2022-11-02 20:40:42,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:42,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:40:42,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:42,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:40:42,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:40:42,297 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 1718 out of 1798 [2022-11-02 20:40:42,302 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1754 places, 1798 transitions, 3614 flow. Second operand has 2 states, 2 states have (on average 1721.5) internal successors, (3443), 2 states have internal predecessors, (3443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:42,302 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:40:42,303 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1718 of 1798 [2022-11-02 20:40:42,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:40:58,223 INFO L130 PetriNetUnfolder]: 2814/48285 cut-off events. [2022-11-02 20:40:58,223 INFO L131 PetriNetUnfolder]: For 69/73 co-relation queries the response was YES. [2022-11-02 20:40:58,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51822 conditions, 48285 events. 2814/48285 cut-off events. For 69/73 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 625754 event pairs, 1964 based on Foata normal form. 1133/48345 useless extension candidates. Maximal degree in co-relation 9487. Up to 3491 conditions per place. [2022-11-02 20:40:59,070 INFO L137 encePairwiseOnDemand]: 1781/1798 looper letters, 58 selfloop transitions, 0 changer transitions 0/1776 dead transitions. [2022-11-02 20:40:59,071 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1750 places, 1776 transitions, 3686 flow [2022-11-02 20:40:59,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:40:59,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:40:59,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3511 transitions. [2022-11-02 20:40:59,079 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9763626251390434 [2022-11-02 20:40:59,079 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 3511 transitions. [2022-11-02 20:40:59,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 3511 transitions. [2022-11-02 20:40:59,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:40:59,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 3511 transitions. [2022-11-02 20:40:59,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 1755.5) internal successors, (3511), 2 states have internal predecessors, (3511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:59,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1798.0) internal successors, (5394), 3 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:59,097 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1798.0) internal successors, (5394), 3 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:59,097 INFO L175 Difference]: Start difference. First operand has 1754 places, 1798 transitions, 3614 flow. Second operand 2 states and 3511 transitions. [2022-11-02 20:40:59,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1750 places, 1776 transitions, 3686 flow [2022-11-02 20:40:59,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1750 places, 1776 transitions, 3686 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:40:59,129 INFO L231 Difference]: Finished difference. Result has 1750 places, 1776 transitions, 3570 flow [2022-11-02 20:40:59,132 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1798, PETRI_DIFFERENCE_MINUEND_FLOW=3570, PETRI_DIFFERENCE_MINUEND_PLACES=1749, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1776, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1776, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=3570, PETRI_PLACES=1750, PETRI_TRANSITIONS=1776} [2022-11-02 20:40:59,133 INFO L287 CegarLoopForPetriNet]: 1754 programPoint places, -4 predicate places. [2022-11-02 20:40:59,133 INFO L495 AbstractCegarLoop]: Abstraction has has 1750 places, 1776 transitions, 3570 flow [2022-11-02 20:40:59,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1721.5) internal successors, (3443), 2 states have internal predecessors, (3443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:59,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:59,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:59,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:40:59,135 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-02 20:40:59,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:59,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1176186900, now seen corresponding path program 1 times [2022-11-02 20:40:59,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:59,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001114127] [2022-11-02 20:40:59,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:59,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:59,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:59,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:40:59,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:59,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001114127] [2022-11-02 20:40:59,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001114127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:59,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:59,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:40:59,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023475520] [2022-11-02 20:40:59,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:59,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:40:59,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:59,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:40:59,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:40:59,242 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 1680 out of 1798 [2022-11-02 20:40:59,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1750 places, 1776 transitions, 3570 flow. Second operand has 3 states, 3 states have (on average 1685.6666666666667) internal successors, (5057), 3 states have internal predecessors, (5057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:40:59,248 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:40:59,248 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1680 of 1798 [2022-11-02 20:40:59,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand