./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread/indexer.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/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_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/indexer.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f24afaadf07ead7c7da85cf6020fd6a6a5b5585e439441b5111a2dea2e7cec4c --- 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 20:45:20,811 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:45:20,816 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:45:20,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:45:20,853 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:45:20,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:45:20,856 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:45:20,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:45:20,859 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:45:20,860 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:45:20,861 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:45:20,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:45:20,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:45:20,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:45:20,864 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:45:20,866 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:45:20,868 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:45:20,875 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:45:20,877 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:45:20,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:45:20,886 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:45:20,887 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:45:20,891 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:45:20,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:45:20,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:45:20,896 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:45:20,896 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:45:20,898 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:45:20,898 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:45:20,899 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:45:20,900 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:45:20,901 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:45:20,903 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:45:20,904 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:45:20,905 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:45:20,905 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:45:20,906 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:45:20,906 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:45:20,906 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:45:20,907 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:45:20,908 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:45:20,909 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-02 20:45:20,929 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:45:20,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:45:20,930 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:45:20,931 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:45:20,932 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:45:20,932 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:45:20,932 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:45:20,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:45:20,933 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:45:20,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:45:20,934 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:45:20,934 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:45:20,935 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:45:20,935 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:45:20,935 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:45:20,935 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:45:20,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:45:20,936 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:45:20,936 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-02 20:45:20,936 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:45:20,936 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:45:20,936 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:45:20,937 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:45:20,937 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:45:20,937 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:45:20,937 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:45:20,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:45:20,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:45:20,938 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:45:20,938 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:45:20,939 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:45:20,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:45:20,939 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:45:20,939 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:45:20,940 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:45:20,940 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_e1e75d24-6e79-4ad3-8b3a-420712767cce/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f24afaadf07ead7c7da85cf6020fd6a6a5b5585e439441b5111a2dea2e7cec4c [2022-11-02 20:45:21,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:45:21,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:45:21,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:45:21,294 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:45:21,294 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:45:21,295 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread/indexer.i [2022-11-02 20:45:21,365 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/data/c6f7a2431/0f737ba676e545e3922fccaeaf768c88/FLAG85976c076 [2022-11-02 20:45:22,007 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:45:22,007 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/sv-benchmarks/c/pthread/indexer.i [2022-11-02 20:45:22,026 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/data/c6f7a2431/0f737ba676e545e3922fccaeaf768c88/FLAG85976c076 [2022-11-02 20:45:22,267 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/data/c6f7a2431/0f737ba676e545e3922fccaeaf768c88 [2022-11-02 20:45:22,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:45:22,271 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:45:22,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:45:22,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:45:22,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:45:22,277 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:45:22" (1/1) ... [2022-11-02 20:45:22,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@378c0ab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:22, skipping insertion in model container [2022-11-02 20:45:22,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:45:22" (1/1) ... [2022-11-02 20:45:22,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:45:22,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:45:22,892 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_e1e75d24-6e79-4ad3-8b3a-420712767cce/sv-benchmarks/c/pthread/indexer.i[47556,47569] [2022-11-02 20:45:22,902 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:45:22,970 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:45:23,030 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_e1e75d24-6e79-4ad3-8b3a-420712767cce/sv-benchmarks/c/pthread/indexer.i[47556,47569] [2022-11-02 20:45:23,039 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:45:23,085 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:45:23,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:23 WrapperNode [2022-11-02 20:45:23,086 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:45:23,087 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:45:23,087 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:45:23,087 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:45:23,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:23" (1/1) ... [2022-11-02 20:45:23,119 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:23" (1/1) ... [2022-11-02 20:45:23,146 INFO L138 Inliner]: procedures = 269, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 143 [2022-11-02 20:45:23,146 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:45:23,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:45:23,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:45:23,147 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:45:23,156 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:23" (1/1) ... [2022-11-02 20:45:23,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:23" (1/1) ... [2022-11-02 20:45:23,160 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:23" (1/1) ... [2022-11-02 20:45:23,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:23" (1/1) ... [2022-11-02 20:45:23,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:23" (1/1) ... [2022-11-02 20:45:23,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:23" (1/1) ... [2022-11-02 20:45:23,179 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:23" (1/1) ... [2022-11-02 20:45:23,180 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:23" (1/1) ... [2022-11-02 20:45:23,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:45:23,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:45:23,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:45:23,184 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:45:23,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:23" (1/1) ... [2022-11-02 20:45:23,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:45:23,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:45:23,215 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:45:23,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:45:23,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:45:23,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:45:23,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:45:23,279 INFO L130 BoogieDeclarations]: Found specification of procedure thread_routine [2022-11-02 20:45:23,281 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_routine [2022-11-02 20:45:23,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:45:23,282 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-02 20:45:23,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:45:23,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:45:23,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:45:23,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:45:23,284 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 20:45:23,469 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:45:23,471 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:45:23,935 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:45:23,968 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:45:23,969 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-02 20:45:23,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:45:23 BoogieIcfgContainer [2022-11-02 20:45:23,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:45:23,974 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:45:23,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:45:23,978 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:45:23,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:45:22" (1/3) ... [2022-11-02 20:45:23,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18be73bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:45:23, skipping insertion in model container [2022-11-02 20:45:23,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:23" (2/3) ... [2022-11-02 20:45:23,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18be73bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:45:23, skipping insertion in model container [2022-11-02 20:45:23,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:45:23" (3/3) ... [2022-11-02 20:45:23,981 INFO L112 eAbstractionObserver]: Analyzing ICFG indexer.i [2022-11-02 20:45:23,993 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:45:24,003 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:45:24,004 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-11-02 20:45:24,004 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:45:24,148 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-02 20:45:24,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 155 transitions, 318 flow [2022-11-02 20:45:24,335 INFO L130 PetriNetUnfolder]: 18/193 cut-off events. [2022-11-02 20:45:24,336 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 20:45:24,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 193 events. 18/193 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 337 event pairs, 0 based on Foata normal form. 0/165 useless extension candidates. Maximal degree in co-relation 116. Up to 4 conditions per place. [2022-11-02 20:45:24,343 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 155 transitions, 318 flow [2022-11-02 20:45:24,353 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 155 transitions, 318 flow [2022-11-02 20:45:24,370 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:45:24,380 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;@30d0b03e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:45:24,380 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-11-02 20:45:24,399 INFO L130 PetriNetUnfolder]: 6/59 cut-off events. [2022-11-02 20:45:24,399 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:45:24,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:45:24,400 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] [2022-11-02 20:45:24,400 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-02 20:45:24,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:24,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1450069280, now seen corresponding path program 1 times [2022-11-02 20:45:24,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:24,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926913089] [2022-11-02 20:45:24,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:24,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:24,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:24,688 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 20:45:24,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:24,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926913089] [2022-11-02 20:45:24,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926913089] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:24,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:24,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:45:24,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593340927] [2022-11-02 20:45:24,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:24,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:45:24,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:24,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:45:24,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:45:24,754 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 155 [2022-11-02 20:45:24,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 155 transitions, 318 flow. Second operand has 2 states, 2 states have (on average 144.5) internal successors, (289), 2 states have internal predecessors, (289), 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 20:45:24,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:45:24,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 155 [2022-11-02 20:45:24,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:45:24,842 INFO L130 PetriNetUnfolder]: 7/181 cut-off events. [2022-11-02 20:45:24,843 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-02 20:45:24,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 181 events. 7/181 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 310 event pairs, 0 based on Foata normal form. 10/173 useless extension candidates. Maximal degree in co-relation 110. Up to 4 conditions per place. [2022-11-02 20:45:24,848 INFO L137 encePairwiseOnDemand]: 147/155 looper letters, 2 selfloop transitions, 0 changer transitions 0/146 dead transitions. [2022-11-02 20:45:24,848 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 146 transitions, 304 flow [2022-11-02 20:45:24,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:45:24,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:45:24,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 298 transitions. [2022-11-02 20:45:24,869 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9612903225806452 [2022-11-02 20:45:24,873 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 298 transitions. [2022-11-02 20:45:24,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 298 transitions. [2022-11-02 20:45:24,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:45:24,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 298 transitions. [2022-11-02 20:45:24,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 149.0) internal successors, (298), 2 states have internal predecessors, (298), 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 20:45:24,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 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 20:45:24,895 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 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 20:45:24,897 INFO L175 Difference]: Start difference. First operand has 144 places, 155 transitions, 318 flow. Second operand 2 states and 298 transitions. [2022-11-02 20:45:24,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 146 transitions, 304 flow [2022-11-02 20:45:24,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 146 transitions, 304 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:45:24,911 INFO L231 Difference]: Finished difference. Result has 144 places, 146 transitions, 300 flow [2022-11-02 20:45:24,913 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=300, PETRI_PLACES=144, PETRI_TRANSITIONS=146} [2022-11-02 20:45:24,917 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 0 predicate places. [2022-11-02 20:45:24,917 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 146 transitions, 300 flow [2022-11-02 20:45:24,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 144.5) internal successors, (289), 2 states have internal predecessors, (289), 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 20:45:24,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:45:24,918 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] [2022-11-02 20:45:24,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:45:24,919 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-02 20:45:24,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:24,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1253555775, now seen corresponding path program 1 times [2022-11-02 20:45:24,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:24,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291198693] [2022-11-02 20:45:24,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:24,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:24,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:25,133 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 20:45:25,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:25,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291198693] [2022-11-02 20:45:25,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291198693] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:25,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:25,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:45:25,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430252056] [2022-11-02 20:45:25,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:25,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:45:25,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:25,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:45:25,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:45:25,137 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 155 [2022-11-02 20:45:25,138 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 146 transitions, 300 flow. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 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 20:45:25,138 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:45:25,138 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 155 [2022-11-02 20:45:25,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:45:25,249 INFO L130 PetriNetUnfolder]: 5/174 cut-off events. [2022-11-02 20:45:25,250 INFO L131 PetriNetUnfolder]: For 3/18 co-relation queries the response was YES. [2022-11-02 20:45:25,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 174 events. 5/174 cut-off events. For 3/18 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 272 event pairs, 0 based on Foata normal form. 1/160 useless extension candidates. Maximal degree in co-relation 230. Up to 29 conditions per place. [2022-11-02 20:45:25,251 INFO L137 encePairwiseOnDemand]: 143/155 looper letters, 36 selfloop transitions, 6 changer transitions 16/164 dead transitions. [2022-11-02 20:45:25,252 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 164 transitions, 440 flow [2022-11-02 20:45:25,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:45:25,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:45:25,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2022-11-02 20:45:25,254 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.843010752688172 [2022-11-02 20:45:25,254 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 392 transitions. [2022-11-02 20:45:25,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 392 transitions. [2022-11-02 20:45:25,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:45:25,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 392 transitions. [2022-11-02 20:45:25,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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 20:45:25,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 155.0) internal successors, (620), 4 states have internal predecessors, (620), 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 20:45:25,258 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 155.0) internal successors, (620), 4 states have internal predecessors, (620), 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 20:45:25,259 INFO L175 Difference]: Start difference. First operand has 144 places, 146 transitions, 300 flow. Second operand 3 states and 392 transitions. [2022-11-02 20:45:25,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 164 transitions, 440 flow [2022-11-02 20:45:25,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 164 transitions, 440 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:45:25,263 INFO L231 Difference]: Finished difference. Result has 147 places, 135 transitions, 302 flow [2022-11-02 20:45:25,263 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=302, PETRI_PLACES=147, PETRI_TRANSITIONS=135} [2022-11-02 20:45:25,264 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 3 predicate places. [2022-11-02 20:45:25,264 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 135 transitions, 302 flow [2022-11-02 20:45:25,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 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 20:45:25,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:45:25,265 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] [2022-11-02 20:45:25,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:45:25,266 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-02 20:45:25,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:25,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1327632314, now seen corresponding path program 1 times [2022-11-02 20:45:25,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:25,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319957080] [2022-11-02 20:45:25,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:25,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:25,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:25,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:45:25,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:25,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319957080] [2022-11-02 20:45:25,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319957080] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:45:25,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817834694] [2022-11-02 20:45:25,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:25,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:25,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:45:25,476 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:45:25,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:45:25,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:25,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:45:25,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:25,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:45:25,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:45:25,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:45:25,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817834694] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:45:25,746 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:45:25,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-02 20:45:25,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033099136] [2022-11-02 20:45:25,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:45:25,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:45:25,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:25,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:45:25,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:45:25,750 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 155 [2022-11-02 20:45:25,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 135 transitions, 302 flow. Second operand has 10 states, 10 states have (on average 113.4) internal successors, (1134), 10 states have internal predecessors, (1134), 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 20:45:25,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:45:25,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 155 [2022-11-02 20:45:25,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:45:25,968 INFO L130 PetriNetUnfolder]: 4/166 cut-off events. [2022-11-02 20:45:25,968 INFO L131 PetriNetUnfolder]: For 7/22 co-relation queries the response was YES. [2022-11-02 20:45:25,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 166 events. 4/166 cut-off events. For 7/22 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 185 event pairs, 0 based on Foata normal form. 4/159 useless extension candidates. Maximal degree in co-relation 234. Up to 20 conditions per place. [2022-11-02 20:45:25,970 INFO L137 encePairwiseOnDemand]: 143/155 looper letters, 35 selfloop transitions, 15 changer transitions 1/156 dead transitions. [2022-11-02 20:45:25,971 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 156 transitions, 448 flow [2022-11-02 20:45:25,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:45:25,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-02 20:45:25,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1163 transitions. [2022-11-02 20:45:25,975 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7503225806451613 [2022-11-02 20:45:25,975 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1163 transitions. [2022-11-02 20:45:25,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1163 transitions. [2022-11-02 20:45:25,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:45:25,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1163 transitions. [2022-11-02 20:45:25,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 116.3) internal successors, (1163), 10 states have internal predecessors, (1163), 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 20:45:25,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 155.0) internal successors, (1705), 11 states have internal predecessors, (1705), 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 20:45:25,986 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 155.0) internal successors, (1705), 11 states have internal predecessors, (1705), 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 20:45:25,986 INFO L175 Difference]: Start difference. First operand has 147 places, 135 transitions, 302 flow. Second operand 10 states and 1163 transitions. [2022-11-02 20:45:25,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 156 transitions, 448 flow [2022-11-02 20:45:25,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 156 transitions, 442 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:45:26,001 INFO L231 Difference]: Finished difference. Result has 147 places, 143 transitions, 372 flow [2022-11-02 20:45:26,002 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=372, PETRI_PLACES=147, PETRI_TRANSITIONS=143} [2022-11-02 20:45:26,003 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 3 predicate places. [2022-11-02 20:45:26,003 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 143 transitions, 372 flow [2022-11-02 20:45:26,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 113.4) internal successors, (1134), 10 states have internal predecessors, (1134), 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 20:45:26,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:45:26,004 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:45:26,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:26,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:26,233 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-02 20:45:26,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:26,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1131839514, now seen corresponding path program 2 times [2022-11-02 20:45:26,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:26,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693115067] [2022-11-02 20:45:26,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:26,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:26,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:26,426 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:45:26,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:26,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693115067] [2022-11-02 20:45:26,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693115067] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:45:26,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183779625] [2022-11-02 20:45:26,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:45:26,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:26,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:45:26,429 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:45:26,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:45:26,576 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:45:26,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:45:26,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 20:45:26,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:26,688 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:45:26,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:45:26,737 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 20:45:26,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:45:26,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:45:26,802 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:45:26,803 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-02 20:45:26,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:45:26,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:45:26,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:45:26,869 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:45:26,869 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-02 20:45:26,907 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-02 20:45:26,912 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:45:26,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183779625] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:26,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:45:26,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 14 [2022-11-02 20:45:26,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927377940] [2022-11-02 20:45:26,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:26,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:45:26,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:26,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:45:26,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:45:26,919 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 155 [2022-11-02 20:45:26,921 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 143 transitions, 372 flow. Second operand has 7 states, 7 states have (on average 108.28571428571429) internal successors, (758), 7 states have internal predecessors, (758), 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 20:45:26,921 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:45:26,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 155 [2022-11-02 20:45:26,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:45:27,558 INFO L130 PetriNetUnfolder]: 404/1533 cut-off events. [2022-11-02 20:45:27,558 INFO L131 PetriNetUnfolder]: For 18/23 co-relation queries the response was YES. [2022-11-02 20:45:27,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2359 conditions, 1533 events. 404/1533 cut-off events. For 18/23 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 9346 event pairs, 168 based on Foata normal form. 0/1358 useless extension candidates. Maximal degree in co-relation 2351. Up to 622 conditions per place. [2022-11-02 20:45:27,568 INFO L137 encePairwiseOnDemand]: 135/155 looper letters, 59 selfloop transitions, 55 changer transitions 0/220 dead transitions. [2022-11-02 20:45:27,568 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 220 transitions, 754 flow [2022-11-02 20:45:27,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:45:27,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:45:27,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 864 transitions. [2022-11-02 20:45:27,571 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7963133640552995 [2022-11-02 20:45:27,571 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 864 transitions. [2022-11-02 20:45:27,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 864 transitions. [2022-11-02 20:45:27,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:45:27,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 864 transitions. [2022-11-02 20:45:27,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 123.42857142857143) internal successors, (864), 7 states have internal predecessors, (864), 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 20:45:27,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 155.0) internal successors, (1240), 8 states have internal predecessors, (1240), 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 20:45:27,577 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 155.0) internal successors, (1240), 8 states have internal predecessors, (1240), 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 20:45:27,577 INFO L175 Difference]: Start difference. First operand has 147 places, 143 transitions, 372 flow. Second operand 7 states and 864 transitions. [2022-11-02 20:45:27,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 220 transitions, 754 flow [2022-11-02 20:45:27,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 220 transitions, 744 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-02 20:45:27,584 INFO L231 Difference]: Finished difference. Result has 157 places, 196 transitions, 723 flow [2022-11-02 20:45:27,584 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=723, PETRI_PLACES=157, PETRI_TRANSITIONS=196} [2022-11-02 20:45:27,585 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 13 predicate places. [2022-11-02 20:45:27,585 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 196 transitions, 723 flow [2022-11-02 20:45:27,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.28571428571429) internal successors, (758), 7 states have internal predecessors, (758), 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 20:45:27,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:45:27,586 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:45:27,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:27,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:27,800 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread_routineErr0ASSERT_VIOLATIONDATA_RACE === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-02 20:45:27,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:27,800 INFO L85 PathProgramCache]: Analyzing trace with hash 2107337554, now seen corresponding path program 1 times [2022-11-02 20:45:27,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:27,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375679408] [2022-11-02 20:45:27,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:27,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:27,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:28,054 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:45:28,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:28,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375679408] [2022-11-02 20:45:28,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375679408] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:45:28,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848296151] [2022-11-02 20:45:28,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:28,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:28,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:45:28,057 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:45:28,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:45:28,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:28,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:45:28,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:28,212 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:45:28,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:45:28,328 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:45:28,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848296151] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:45:28,330 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:45:28,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-02 20:45:28,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781920302] [2022-11-02 20:45:28,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:45:28,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:45:28,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:28,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:45:28,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:45:28,336 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 155 [2022-11-02 20:45:28,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 196 transitions, 723 flow. Second operand has 18 states, 18 states have (on average 113.55555555555556) internal successors, (2044), 18 states have internal predecessors, (2044), 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 20:45:28,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:45:28,338 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 155 [2022-11-02 20:45:28,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:45:28,782 INFO L130 PetriNetUnfolder]: 121/720 cut-off events. [2022-11-02 20:45:28,782 INFO L131 PetriNetUnfolder]: For 97/121 co-relation queries the response was YES. [2022-11-02 20:45:28,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1273 conditions, 720 events. 121/720 cut-off events. For 97/121 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3620 event pairs, 12 based on Foata normal form. 6/673 useless extension candidates. Maximal degree in co-relation 1259. Up to 154 conditions per place. [2022-11-02 20:45:28,788 INFO L137 encePairwiseOnDemand]: 143/155 looper letters, 43 selfloop transitions, 27 changer transitions 1/229 dead transitions. [2022-11-02 20:45:28,788 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 229 transitions, 983 flow [2022-11-02 20:45:28,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:45:28,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-02 20:45:28,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2517 transitions. [2022-11-02 20:45:28,795 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7381231671554253 [2022-11-02 20:45:28,795 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2517 transitions. [2022-11-02 20:45:28,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2517 transitions. [2022-11-02 20:45:28,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:45:28,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2517 transitions. [2022-11-02 20:45:28,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 114.4090909090909) internal successors, (2517), 22 states have internal predecessors, (2517), 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 20:45:28,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 155.0) internal successors, (3565), 23 states have internal predecessors, (3565), 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 20:45:28,838 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 155.0) internal successors, (3565), 23 states have internal predecessors, (3565), 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 20:45:28,838 INFO L175 Difference]: Start difference. First operand has 157 places, 196 transitions, 723 flow. Second operand 22 states and 2517 transitions. [2022-11-02 20:45:28,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 229 transitions, 983 flow [2022-11-02 20:45:28,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 229 transitions, 982 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:45:28,851 INFO L231 Difference]: Finished difference. Result has 182 places, 209 transitions, 870 flow [2022-11-02 20:45:28,851 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=870, PETRI_PLACES=182, PETRI_TRANSITIONS=209} [2022-11-02 20:45:28,854 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 38 predicate places. [2022-11-02 20:45:28,854 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 209 transitions, 870 flow [2022-11-02 20:45:28,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 113.55555555555556) internal successors, (2044), 18 states have internal predecessors, (2044), 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 20:45:28,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:45:28,855 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:45:28,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:29,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:29,073 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread_routineErr0ASSERT_VIOLATIONDATA_RACE === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-02 20:45:29,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:29,073 INFO L85 PathProgramCache]: Analyzing trace with hash -289344878, now seen corresponding path program 2 times [2022-11-02 20:45:29,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:29,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029558239] [2022-11-02 20:45:29,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:29,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:29,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:29,483 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:45:29,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:29,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029558239] [2022-11-02 20:45:29,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029558239] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:45:29,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051468315] [2022-11-02 20:45:29,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:45:29,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:29,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:45:29,485 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:45:29,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:45:29,595 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:45:29,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:45:29,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:45:29,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:29,608 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:45:29,628 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 20:45:29,658 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:45:29,658 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-02 20:45:29,697 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:45:29,698 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-02 20:45:29,739 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-02 20:45:29,739 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:45:29,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051468315] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:29,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:45:29,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 21 [2022-11-02 20:45:29,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021492177] [2022-11-02 20:45:29,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:29,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:45:29,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:29,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:45:29,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-11-02 20:45:29,743 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 155 [2022-11-02 20:45:29,751 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 209 transitions, 870 flow. Second operand has 6 states, 6 states have (on average 114.16666666666667) internal successors, (685), 6 states have internal predecessors, (685), 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 20:45:29,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:45:29,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 155 [2022-11-02 20:45:29,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:45:30,491 INFO L130 PetriNetUnfolder]: 503/2604 cut-off events. [2022-11-02 20:45:30,492 INFO L131 PetriNetUnfolder]: For 485/525 co-relation queries the response was YES. [2022-11-02 20:45:30,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4545 conditions, 2604 events. 503/2604 cut-off events. For 485/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 19163 event pairs, 101 based on Foata normal form. 7/2375 useless extension candidates. Maximal degree in co-relation 4527. Up to 658 conditions per place. [2022-11-02 20:45:30,511 INFO L137 encePairwiseOnDemand]: 144/155 looper letters, 128 selfloop transitions, 33 changer transitions 0/284 dead transitions. [2022-11-02 20:45:30,511 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 284 transitions, 1483 flow [2022-11-02 20:45:30,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:45:30,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:45:30,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 767 transitions. [2022-11-02 20:45:30,514 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8247311827956989 [2022-11-02 20:45:30,514 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 767 transitions. [2022-11-02 20:45:30,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 767 transitions. [2022-11-02 20:45:30,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:45:30,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 767 transitions. [2022-11-02 20:45:30,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 127.83333333333333) internal successors, (767), 6 states have internal predecessors, (767), 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 20:45:30,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 155.0) internal successors, (1085), 7 states have internal predecessors, (1085), 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 20:45:30,521 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 155.0) internal successors, (1085), 7 states have internal predecessors, (1085), 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 20:45:30,521 INFO L175 Difference]: Start difference. First operand has 182 places, 209 transitions, 870 flow. Second operand 6 states and 767 transitions. [2022-11-02 20:45:30,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 284 transitions, 1483 flow [2022-11-02 20:45:30,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 284 transitions, 1455 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-11-02 20:45:30,536 INFO L231 Difference]: Finished difference. Result has 186 places, 237 transitions, 1140 flow [2022-11-02 20:45:30,536 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1140, PETRI_PLACES=186, PETRI_TRANSITIONS=237} [2022-11-02 20:45:30,539 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 42 predicate places. [2022-11-02 20:45:30,539 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 237 transitions, 1140 flow [2022-11-02 20:45:30,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.16666666666667) internal successors, (685), 6 states have internal predecessors, (685), 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 20:45:30,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:45:30,540 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:45:30,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:30,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:30,757 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-02 20:45:30,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:30,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1174086661, now seen corresponding path program 1 times [2022-11-02 20:45:30,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:30,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505105052] [2022-11-02 20:45:30,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:30,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:30,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:30,924 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-02 20:45:30,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:30,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505105052] [2022-11-02 20:45:30,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505105052] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:45:30,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236374443] [2022-11-02 20:45:30,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:30,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:30,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:45:30,926 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:45:30,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:45:31,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:31,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 20:45:31,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:31,285 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:45:31,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:45:31,632 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:45:31,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236374443] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:45:31,632 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:45:31,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 17, 17] total 34 [2022-11-02 20:45:31,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175261208] [2022-11-02 20:45:31,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:45:31,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-02 20:45:31,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:31,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-02 20:45:31,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=830, Unknown=0, NotChecked=0, Total=1122 [2022-11-02 20:45:31,639 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 155 [2022-11-02 20:45:31,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 237 transitions, 1140 flow. Second operand has 34 states, 34 states have (on average 113.20588235294117) internal successors, (3849), 34 states have internal predecessors, (3849), 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 20:45:31,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:45:31,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 155 [2022-11-02 20:45:31,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:45:32,609 INFO L130 PetriNetUnfolder]: 208/1317 cut-off events. [2022-11-02 20:45:32,610 INFO L131 PetriNetUnfolder]: For 592/612 co-relation queries the response was YES. [2022-11-02 20:45:32,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2507 conditions, 1317 events. 208/1317 cut-off events. For 592/612 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 7852 event pairs, 11 based on Foata normal form. 10/1240 useless extension candidates. Maximal degree in co-relation 2484. Up to 235 conditions per place. [2022-11-02 20:45:32,621 INFO L137 encePairwiseOnDemand]: 144/155 looper letters, 42 selfloop transitions, 49 changer transitions 0/274 dead transitions. [2022-11-02 20:45:32,622 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 274 transitions, 1569 flow [2022-11-02 20:45:32,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-02 20:45:32,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-11-02 20:45:32,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 5270 transitions. [2022-11-02 20:45:32,632 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.723404255319149 [2022-11-02 20:45:32,632 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 5270 transitions. [2022-11-02 20:45:32,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 5270 transitions. [2022-11-02 20:45:32,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:45:32,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 5270 transitions. [2022-11-02 20:45:32,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 112.12765957446808) internal successors, (5270), 47 states have internal predecessors, (5270), 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 20:45:32,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 155.0) internal successors, (7440), 48 states have internal predecessors, (7440), 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 20:45:32,662 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 155.0) internal successors, (7440), 48 states have internal predecessors, (7440), 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 20:45:32,662 INFO L175 Difference]: Start difference. First operand has 186 places, 237 transitions, 1140 flow. Second operand 47 states and 5270 transitions. [2022-11-02 20:45:32,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 274 transitions, 1569 flow [2022-11-02 20:45:32,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 274 transitions, 1551 flow, removed 9 selfloop flow, removed 0 redundant places. [2022-11-02 20:45:32,674 INFO L231 Difference]: Finished difference. Result has 227 places, 246 transitions, 1376 flow [2022-11-02 20:45:32,674 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=1065, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=1376, PETRI_PLACES=227, PETRI_TRANSITIONS=246} [2022-11-02 20:45:32,675 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 83 predicate places. [2022-11-02 20:45:32,675 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 246 transitions, 1376 flow [2022-11-02 20:45:32,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 113.20588235294117) internal successors, (3849), 34 states have internal predecessors, (3849), 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 20:45:32,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:45:32,677 INFO L208 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 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] [2022-11-02 20:45:32,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:32,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-02 20:45:32,893 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-02 20:45:32,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:32,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1518517776, now seen corresponding path program 1 times [2022-11-02 20:45:32,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:32,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546100360] [2022-11-02 20:45:32,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:32,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:32,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:33,921 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-02 20:45:33,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:33,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546100360] [2022-11-02 20:45:33,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546100360] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:45:33,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825234802] [2022-11-02 20:45:33,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:33,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:33,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:45:33,923 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:45:33,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:45:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:34,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-02 20:45:34,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:34,263 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-02 20:45:34,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:45:35,436 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-02 20:45:35,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825234802] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:45:35,437 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:45:35,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 66 [2022-11-02 20:45:35,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856311648] [2022-11-02 20:45:35,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:45:35,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-11-02 20:45:35,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:35,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-11-02 20:45:35,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1122, Invalid=3168, Unknown=0, NotChecked=0, Total=4290 [2022-11-02 20:45:35,447 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 155 [2022-11-02 20:45:35,455 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 246 transitions, 1376 flow. Second operand has 66 states, 66 states have (on average 113.54545454545455) internal successors, (7494), 66 states have internal predecessors, (7494), 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 20:45:35,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:45:35,455 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 155 [2022-11-02 20:45:35,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:45:38,017 INFO L130 PetriNetUnfolder]: 205/1394 cut-off events. [2022-11-02 20:45:38,017 INFO L131 PetriNetUnfolder]: For 2430/2450 co-relation queries the response was YES. [2022-11-02 20:45:38,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3007 conditions, 1394 events. 205/1394 cut-off events. For 2430/2450 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 7866 event pairs, 11 based on Foata normal form. 17/1324 useless extension candidates. Maximal degree in co-relation 2975. Up to 235 conditions per place. [2022-11-02 20:45:38,031 INFO L137 encePairwiseOnDemand]: 146/155 looper letters, 74 selfloop transitions, 96 changer transitions 0/354 dead transitions. [2022-11-02 20:45:38,031 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 354 transitions, 2568 flow [2022-11-02 20:45:38,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-11-02 20:45:38,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2022-11-02 20:45:38,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 10509 transitions. [2022-11-02 20:45:38,046 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7290322580645161 [2022-11-02 20:45:38,046 INFO L72 ComplementDD]: Start complementDD. Operand 93 states and 10509 transitions. [2022-11-02 20:45:38,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 93 states and 10509 transitions. [2022-11-02 20:45:38,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:45:38,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 93 states and 10509 transitions. [2022-11-02 20:45:38,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 94 states, 93 states have (on average 113.0) internal successors, (10509), 93 states have internal predecessors, (10509), 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 20:45:38,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 94 states, 94 states have (on average 155.0) internal successors, (14570), 94 states have internal predecessors, (14570), 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 20:45:38,149 INFO L81 ComplementDD]: Finished complementDD. Result has 94 states, 94 states have (on average 155.0) internal successors, (14570), 94 states have internal predecessors, (14570), 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 20:45:38,149 INFO L175 Difference]: Start difference. First operand has 227 places, 246 transitions, 1376 flow. Second operand 93 states and 10509 transitions. [2022-11-02 20:45:38,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 354 transitions, 2568 flow [2022-11-02 20:45:38,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 354 transitions, 2473 flow, removed 26 selfloop flow, removed 20 redundant places. [2022-11-02 20:45:38,170 INFO L231 Difference]: Finished difference. Result has 316 places, 295 transitions, 2012 flow [2022-11-02 20:45:38,171 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=1313, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=93, PETRI_FLOW=2012, PETRI_PLACES=316, PETRI_TRANSITIONS=295} [2022-11-02 20:45:38,171 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 172 predicate places. [2022-11-02 20:45:38,171 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 295 transitions, 2012 flow [2022-11-02 20:45:38,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 113.54545454545455) internal successors, (7494), 66 states have internal predecessors, (7494), 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 20:45:38,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:45:38,175 INFO L208 CegarLoopForPetriNet]: trace histogram [31, 31, 31, 31, 31, 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] [2022-11-02 20:45:38,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:38,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-02 20:45:38,401 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-02 20:45:38,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:38,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1124352272, now seen corresponding path program 2 times [2022-11-02 20:45:38,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:38,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032203787] [2022-11-02 20:45:38,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:38,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:38,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:41,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2369 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-02 20:45:41,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:41,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032203787] [2022-11-02 20:45:41,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032203787] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:45:41,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969005238] [2022-11-02 20:45:41,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:45:41,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:41,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:45:41,554 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:45:41,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:45:41,767 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:45:41,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:45:41,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-02 20:45:41,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:42,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2369 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-02 20:45:42,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:45:45,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2369 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-02 20:45:45,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969005238] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:45:45,835 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:45:45,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 130 [2022-11-02 20:45:45,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68093593] [2022-11-02 20:45:45,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:45:45,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2022-11-02 20:45:45,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:45,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2022-11-02 20:45:45,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4290, Invalid=12480, Unknown=0, NotChecked=0, Total=16770 [2022-11-02 20:45:45,856 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 155 [2022-11-02 20:45:45,870 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 295 transitions, 2012 flow. Second operand has 130 states, 130 states have (on average 113.52307692307693) internal successors, (14758), 130 states have internal predecessors, (14758), 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 20:45:45,870 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:45:45,871 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 155 [2022-11-02 20:45:45,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:45:53,913 INFO L130 PetriNetUnfolder]: 208/1557 cut-off events. [2022-11-02 20:45:53,916 INFO L131 PetriNetUnfolder]: For 17133/17153 co-relation queries the response was YES. [2022-11-02 20:45:53,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4159 conditions, 1557 events. 208/1557 cut-off events. For 17133/17153 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 7840 event pairs, 11 based on Foata normal form. 33/1503 useless extension candidates. Maximal degree in co-relation 4110. Up to 235 conditions per place. [2022-11-02 20:45:53,937 INFO L137 encePairwiseOnDemand]: 146/155 looper letters, 138 selfloop transitions, 192 changer transitions 0/514 dead transitions. [2022-11-02 20:45:53,937 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 514 transitions, 4820 flow [2022-11-02 20:45:53,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2022-11-02 20:45:53,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2022-11-02 20:45:54,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 21341 transitions. [2022-11-02 20:45:54,023 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7284860897764124 [2022-11-02 20:45:54,024 INFO L72 ComplementDD]: Start complementDD. Operand 189 states and 21341 transitions. [2022-11-02 20:45:54,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 189 states and 21341 transitions. [2022-11-02 20:45:54,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:45:54,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 189 states and 21341 transitions. [2022-11-02 20:45:54,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 190 states, 189 states have (on average 112.91534391534391) internal successors, (21341), 189 states have internal predecessors, (21341), 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 20:45:54,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 190 states, 190 states have (on average 155.0) internal successors, (29450), 190 states have internal predecessors, (29450), 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 20:45:54,136 INFO L81 ComplementDD]: Finished complementDD. Result has 190 states, 190 states have (on average 155.0) internal successors, (29450), 190 states have internal predecessors, (29450), 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 20:45:54,136 INFO L175 Difference]: Start difference. First operand has 316 places, 295 transitions, 2012 flow. Second operand 189 states and 21341 transitions. [2022-11-02 20:45:54,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 514 transitions, 4820 flow [2022-11-02 20:45:54,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 514 transitions, 4699 flow, removed 17 selfloop flow, removed 42 redundant places. [2022-11-02 20:45:54,193 INFO L231 Difference]: Finished difference. Result has 495 places, 392 transitions, 3522 flow [2022-11-02 20:45:54,194 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=1891, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=189, PETRI_FLOW=3522, PETRI_PLACES=495, PETRI_TRANSITIONS=392} [2022-11-02 20:45:54,195 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 351 predicate places. [2022-11-02 20:45:54,195 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 392 transitions, 3522 flow [2022-11-02 20:45:54,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 113.52307692307693) internal successors, (14758), 130 states have internal predecessors, (14758), 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 20:45:54,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:45:54,199 INFO L208 CegarLoopForPetriNet]: trace histogram [63, 63, 63, 63, 63, 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] [2022-11-02 20:45:54,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:54,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:54,424 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-02 20:45:54,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:54,425 INFO L85 PathProgramCache]: Analyzing trace with hash 118310672, now seen corresponding path program 3 times [2022-11-02 20:45:54,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:54,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448988943] [2022-11-02 20:45:54,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:54,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:54,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:04,158 INFO L134 CoverageAnalysis]: Checked inductivity of 9841 backedges. 0 proven. 9828 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-02 20:46:04,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:46:04,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448988943] [2022-11-02 20:46:04,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448988943] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:46:04,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651133810] [2022-11-02 20:46:04,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:46:04,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:46:04,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:46:04,165 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:46:04,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e75d24-6e79-4ad3-8b3a-420712767cce/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process