./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/05-lval_ls_01-idx_rc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/05-lval_ls_01-idx_rc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY --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 881804847426e60812f8175456032b889bbad15c60068b15698c7277211e0c6e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 07:22:42,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 07:22:42,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 07:22:42,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 07:22:42,690 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 07:22:42,691 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 07:22:42,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 07:22:42,697 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 07:22:42,700 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 07:22:42,702 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 07:22:42,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 07:22:42,706 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 07:22:42,707 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 07:22:42,718 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 07:22:42,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 07:22:42,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 07:22:42,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 07:22:42,726 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 07:22:42,729 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 07:22:42,737 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 07:22:42,740 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 07:22:42,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 07:22:42,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 07:22:42,749 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 07:22:42,766 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 07:22:42,767 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 07:22:42,767 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 07:22:42,770 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 07:22:42,771 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 07:22:42,773 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 07:22:42,774 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 07:22:42,775 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 07:22:42,778 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 07:22:42,780 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 07:22:42,782 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 07:22:42,782 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 07:22:42,783 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 07:22:42,783 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 07:22:42,784 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 07:22:42,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 07:22:42,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 07:22:42,790 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/config/svcomp-DataRace-32bit-Automizer_Default.epf [2021-11-07 07:22:42,844 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 07:22:42,844 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 07:22:42,845 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 07:22:42,845 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 07:22:42,850 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 07:22:42,851 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 07:22:42,851 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 07:22:42,851 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 07:22:42,851 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 07:22:42,852 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 07:22:42,852 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 07:22:42,856 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 07:22:42,857 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 07:22:42,857 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 07:22:42,857 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 07:22:42,858 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 07:22:42,858 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2021-11-07 07:22:42,859 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 07:22:42,859 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 07:22:42,861 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 07:22:42,861 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 07:22:42,868 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 07:22:42,868 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 07:22:42,868 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 07:22:42,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:22:42,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 07:22:42,869 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 07:22:42,870 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 07:22:42,870 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 07:22:42,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 07:22:42,871 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 07:22:42,871 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 07:22:42,873 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 07:22:42,874 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 07:22:42,874 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_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 881804847426e60812f8175456032b889bbad15c60068b15698c7277211e0c6e [2021-11-07 07:22:43,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 07:22:43,253 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 07:22:43,256 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 07:22:43,258 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 07:22:43,259 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 07:22:43,260 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/goblint-regression/05-lval_ls_01-idx_rc.i [2021-11-07 07:22:43,336 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/data/2403d657b/b500e75a81e84c0e96a8d93cba56beb7/FLAGf3778ba5d [2021-11-07 07:22:43,873 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 07:22:43,873 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/sv-benchmarks/c/goblint-regression/05-lval_ls_01-idx_rc.i [2021-11-07 07:22:43,888 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/data/2403d657b/b500e75a81e84c0e96a8d93cba56beb7/FLAGf3778ba5d [2021-11-07 07:22:44,198 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/data/2403d657b/b500e75a81e84c0e96a8d93cba56beb7 [2021-11-07 07:22:44,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 07:22:44,202 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 07:22:44,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 07:22:44,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 07:22:44,208 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 07:22:44,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:22:44" (1/1) ... [2021-11-07 07:22:44,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68c71bed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:44, skipping insertion in model container [2021-11-07 07:22:44,210 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:22:44" (1/1) ... [2021-11-07 07:22:44,218 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 07:22:44,259 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:22:44,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:22:44,630 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 07:22:44,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:22:44,704 INFO L208 MainTranslator]: Completed translation [2021-11-07 07:22:44,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:44 WrapperNode [2021-11-07 07:22:44,705 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 07:22:44,706 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 07:22:44,706 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 07:22:44,707 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 07:22:44,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:44" (1/1) ... [2021-11-07 07:22:44,730 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:44" (1/1) ... [2021-11-07 07:22:44,751 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 07:22:44,752 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 07:22:44,752 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 07:22:44,752 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 07:22:44,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:44" (1/1) ... [2021-11-07 07:22:44,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:44" (1/1) ... [2021-11-07 07:22:44,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:44" (1/1) ... [2021-11-07 07:22:44,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:44" (1/1) ... [2021-11-07 07:22:44,772 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:44" (1/1) ... [2021-11-07 07:22:44,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:44" (1/1) ... [2021-11-07 07:22:44,778 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:44" (1/1) ... [2021-11-07 07:22:44,786 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 07:22:44,787 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 07:22:44,787 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 07:22:44,787 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 07:22:44,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:44" (1/1) ... [2021-11-07 07:22:44,801 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:22:44,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:44,847 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 07:22:44,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 07:22:44,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 07:22:44,904 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-11-07 07:22:44,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 07:22:44,904 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2021-11-07 07:22:44,905 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2021-11-07 07:22:44,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 07:22:44,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 07:22:44,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 07:22:44,907 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-07 07:22:45,240 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 07:22:45,248 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-07 07:22:45,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:22:45 BoogieIcfgContainer [2021-11-07 07:22:45,251 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 07:22:45,254 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 07:22:45,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 07:22:45,260 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 07:22:45,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:22:44" (1/3) ... [2021-11-07 07:22:45,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec357e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:22:45, skipping insertion in model container [2021-11-07 07:22:45,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:44" (2/3) ... [2021-11-07 07:22:45,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec357e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:22:45, skipping insertion in model container [2021-11-07 07:22:45,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:22:45" (3/3) ... [2021-11-07 07:22:45,270 INFO L111 eAbstractionObserver]: Analyzing ICFG 05-lval_ls_01-idx_rc.i [2021-11-07 07:22:45,277 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-07 07:22:45,278 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 07:22:45,278 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-07 07:22:45,278 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-07 07:22:45,330 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:45,332 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:45,332 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:45,332 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:45,334 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:45,337 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:45,337 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:45,337 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:45,338 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:45,338 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:45,339 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:45,339 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:45,339 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:45,340 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:45,341 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:45,341 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:45,341 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:45,342 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:45,342 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:45,343 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:45,343 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:45,343 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:45,344 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:45,344 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:45,344 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:45,345 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:45,346 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:45,346 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:45,346 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:45,346 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:45,347 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:45,347 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:45,350 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:45,350 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:45,351 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:45,351 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:45,351 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:45,351 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:45,352 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 07:22:45,356 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-07 07:22:45,407 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 07:22:45,417 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 07:22:45,419 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-07 07:22:45,435 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 62 places, 60 transitions, 125 flow [2021-11-07 07:22:45,475 INFO L129 PetriNetUnfolder]: 2/59 cut-off events. [2021-11-07 07:22:45,475 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-07 07:22:45,478 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 59 events. 2/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 53 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 20. Up to 2 conditions per place. [2021-11-07 07:22:45,478 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 60 transitions, 125 flow [2021-11-07 07:22:45,483 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 59 transitions, 121 flow [2021-11-07 07:22:45,493 INFO L129 PetriNetUnfolder]: 2/29 cut-off events. [2021-11-07 07:22:45,500 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-07 07:22:45,500 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 07:22:45,501 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:45,502 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 07:22:45,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:45,510 INFO L85 PathProgramCache]: Analyzing trace with hash 543976472, now seen corresponding path program 1 times [2021-11-07 07:22:45,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:45,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108795280] [2021-11-07 07:22:45,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:45,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:45,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:45,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:45,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:45,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108795280] [2021-11-07 07:22:45,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108795280] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:22:45,694 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:22:45,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 07:22:45,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438953713] [2021-11-07 07:22:45,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 07:22:45,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:45,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 07:22:45,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 07:22:45,724 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 60 [2021-11-07 07:22:45,727 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 121 flow. Second operand has 2 states, 2 states have (on average 59.5) internal successors, (119), 2 states have internal predecessors, (119), 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) [2021-11-07 07:22:45,728 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 07:22:45,728 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 60 [2021-11-07 07:22:45,729 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 07:22:45,763 INFO L129 PetriNetUnfolder]: 1/58 cut-off events. [2021-11-07 07:22:45,763 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-07 07:22:45,763 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 58 events. 1/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 1/54 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2021-11-07 07:22:45,765 INFO L132 encePairwiseOnDemand]: 59/60 looper letters, 0 selfloop transitions, 0 changer transitions 0/58 dead transitions. [2021-11-07 07:22:45,765 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 58 transitions, 119 flow [2021-11-07 07:22:45,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 07:22:45,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-11-07 07:22:45,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 119 transitions. [2021-11-07 07:22:45,778 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9916666666666667 [2021-11-07 07:22:45,779 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 119 transitions. [2021-11-07 07:22:45,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 119 transitions. [2021-11-07 07:22:45,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 07:22:45,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 119 transitions. [2021-11-07 07:22:45,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 59.5) internal successors, (119), 2 states have internal predecessors, (119), 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) [2021-11-07 07:22:45,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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) [2021-11-07 07:22:45,793 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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) [2021-11-07 07:22:45,795 INFO L186 Difference]: Start difference. First operand has 61 places, 59 transitions, 121 flow. Second operand 2 states and 119 transitions. [2021-11-07 07:22:45,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 58 transitions, 119 flow [2021-11-07 07:22:45,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 58 transitions, 118 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-11-07 07:22:45,803 INFO L242 Difference]: Finished difference. Result has 61 places, 58 transitions, 118 flow [2021-11-07 07:22:45,806 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=118, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2021-11-07 07:22:45,807 INFO L334 CegarLoopForPetriNet]: 61 programPoint places, 0 predicate places. [2021-11-07 07:22:45,807 INFO L470 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 118 flow [2021-11-07 07:22:45,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 59.5) internal successors, (119), 2 states have internal predecessors, (119), 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) [2021-11-07 07:22:45,808 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 07:22:45,808 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:45,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 07:22:45,809 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 07:22:45,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:45,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1252974887, now seen corresponding path program 1 times [2021-11-07 07:22:45,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:45,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586446320] [2021-11-07 07:22:45,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:45,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:45,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:45,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:45,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:45,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586446320] [2021-11-07 07:22:45,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586446320] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:22:45,884 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:22:45,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:22:45,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510056195] [2021-11-07 07:22:45,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:22:45,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:45,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:22:45,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:22:45,889 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 60 [2021-11-07 07:22:45,890 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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) [2021-11-07 07:22:45,890 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 07:22:45,890 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 60 [2021-11-07 07:22:45,891 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 07:22:45,929 INFO L129 PetriNetUnfolder]: 1/62 cut-off events. [2021-11-07 07:22:45,929 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-07 07:22:45,929 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 62 events. 1/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 75. Up to 8 conditions per place. [2021-11-07 07:22:45,930 INFO L132 encePairwiseOnDemand]: 57/60 looper letters, 9 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2021-11-07 07:22:45,930 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 62 transitions, 148 flow [2021-11-07 07:22:45,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:22:45,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-07 07:22:45,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 168 transitions. [2021-11-07 07:22:45,933 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2021-11-07 07:22:45,933 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 168 transitions. [2021-11-07 07:22:45,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 168 transitions. [2021-11-07 07:22:45,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 07:22:45,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 168 transitions. [2021-11-07 07:22:45,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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) [2021-11-07 07:22:45,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 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) [2021-11-07 07:22:45,939 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 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) [2021-11-07 07:22:45,939 INFO L186 Difference]: Start difference. First operand has 61 places, 58 transitions, 118 flow. Second operand 3 states and 168 transitions. [2021-11-07 07:22:45,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 62 transitions, 148 flow [2021-11-07 07:22:45,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 62 transitions, 148 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-07 07:22:45,943 INFO L242 Difference]: Finished difference. Result has 64 places, 59 transitions, 130 flow [2021-11-07 07:22:45,944 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2021-11-07 07:22:45,944 INFO L334 CegarLoopForPetriNet]: 61 programPoint places, 3 predicate places. [2021-11-07 07:22:45,945 INFO L470 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 130 flow [2021-11-07 07:22:45,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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) [2021-11-07 07:22:45,945 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 07:22:45,945 INFO L254 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] [2021-11-07 07:22:45,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 07:22:45,946 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 07:22:45,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:45,947 INFO L85 PathProgramCache]: Analyzing trace with hash -152756786, now seen corresponding path program 1 times [2021-11-07 07:22:45,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:45,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348164593] [2021-11-07 07:22:45,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:45,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:45,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:46,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:46,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:46,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348164593] [2021-11-07 07:22:46,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348164593] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:46,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788117478] [2021-11-07 07:22:46,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:46,098 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:46,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:46,109 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:46,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 07:22:46,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:46,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:22:46,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:46,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 07:22:46,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788117478] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:22:46,346 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:22:46,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2021-11-07 07:22:46,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587799915] [2021-11-07 07:22:46,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:22:46,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:46,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:22:46,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:22:46,349 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 60 [2021-11-07 07:22:46,349 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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) [2021-11-07 07:22:46,350 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 07:22:46,350 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 60 [2021-11-07 07:22:46,350 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 07:22:46,459 INFO L129 PetriNetUnfolder]: 38/219 cut-off events. [2021-11-07 07:22:46,460 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-11-07 07:22:46,472 INFO L84 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 219 events. 38/219 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 915 event pairs, 15 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 316. Up to 53 conditions per place. [2021-11-07 07:22:46,477 INFO L132 encePairwiseOnDemand]: 52/60 looper letters, 16 selfloop transitions, 6 changer transitions 0/69 dead transitions. [2021-11-07 07:22:46,477 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 69 transitions, 194 flow [2021-11-07 07:22:46,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:22:46,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-07 07:22:46,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 165 transitions. [2021-11-07 07:22:46,485 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9166666666666666 [2021-11-07 07:22:46,485 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 165 transitions. [2021-11-07 07:22:46,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 165 transitions. [2021-11-07 07:22:46,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 07:22:46,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 165 transitions. [2021-11-07 07:22:46,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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) [2021-11-07 07:22:46,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 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) [2021-11-07 07:22:46,492 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 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) [2021-11-07 07:22:46,492 INFO L186 Difference]: Start difference. First operand has 64 places, 59 transitions, 130 flow. Second operand 3 states and 165 transitions. [2021-11-07 07:22:46,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 69 transitions, 194 flow [2021-11-07 07:22:46,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 69 transitions, 192 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-11-07 07:22:46,497 INFO L242 Difference]: Finished difference. Result has 67 places, 65 transitions, 180 flow [2021-11-07 07:22:46,497 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=67, PETRI_TRANSITIONS=65} [2021-11-07 07:22:46,498 INFO L334 CegarLoopForPetriNet]: 61 programPoint places, 6 predicate places. [2021-11-07 07:22:46,498 INFO L470 AbstractCegarLoop]: Abstraction has has 67 places, 65 transitions, 180 flow [2021-11-07 07:22:46,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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) [2021-11-07 07:22:46,498 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 07:22:46,498 INFO L254 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] [2021-11-07 07:22:46,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-07 07:22:46,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:46,713 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 07:22:46,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:46,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1974367898, now seen corresponding path program 1 times [2021-11-07 07:22:46,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:46,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401274903] [2021-11-07 07:22:46,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:46,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:46,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:46,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:46,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401274903] [2021-11-07 07:22:46,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401274903] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:46,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307209439] [2021-11-07 07:22:46,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:46,824 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:46,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:46,825 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:46,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 07:22:46,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:46,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:22:46,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:47,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 07:22:47,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307209439] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:22:47,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:22:47,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2021-11-07 07:22:47,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839320274] [2021-11-07 07:22:47,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:22:47,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:47,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:22:47,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:22:47,038 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 60 [2021-11-07 07:22:47,038 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 65 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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) [2021-11-07 07:22:47,039 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 07:22:47,039 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 60 [2021-11-07 07:22:47,039 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 07:22:47,204 INFO L129 PetriNetUnfolder]: 56/295 cut-off events. [2021-11-07 07:22:47,205 INFO L130 PetriNetUnfolder]: For 85/90 co-relation queries the response was YES. [2021-11-07 07:22:47,206 INFO L84 FinitePrefix]: Finished finitePrefix Result has 531 conditions, 295 events. 56/295 cut-off events. For 85/90 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1475 event pairs, 23 based on Foata normal form. 2/274 useless extension candidates. Maximal degree in co-relation 525. Up to 102 conditions per place. [2021-11-07 07:22:47,208 INFO L132 encePairwiseOnDemand]: 54/60 looper letters, 23 selfloop transitions, 7 changer transitions 1/75 dead transitions. [2021-11-07 07:22:47,208 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 75 transitions, 280 flow [2021-11-07 07:22:47,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:22:47,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-07 07:22:47,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 156 transitions. [2021-11-07 07:22:47,215 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8666666666666667 [2021-11-07 07:22:47,215 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 156 transitions. [2021-11-07 07:22:47,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 156 transitions. [2021-11-07 07:22:47,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 07:22:47,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 156 transitions. [2021-11-07 07:22:47,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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) [2021-11-07 07:22:47,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 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) [2021-11-07 07:22:47,218 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 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) [2021-11-07 07:22:47,218 INFO L186 Difference]: Start difference. First operand has 67 places, 65 transitions, 180 flow. Second operand 3 states and 156 transitions. [2021-11-07 07:22:47,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 75 transitions, 280 flow [2021-11-07 07:22:47,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 75 transitions, 262 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-07 07:22:47,225 INFO L242 Difference]: Finished difference. Result has 69 places, 70 transitions, 224 flow [2021-11-07 07:22:47,226 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=69, PETRI_TRANSITIONS=70} [2021-11-07 07:22:47,226 INFO L334 CegarLoopForPetriNet]: 61 programPoint places, 8 predicate places. [2021-11-07 07:22:47,226 INFO L470 AbstractCegarLoop]: Abstraction has has 69 places, 70 transitions, 224 flow [2021-11-07 07:22:47,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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) [2021-11-07 07:22:47,227 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 07:22:47,227 INFO L254 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] [2021-11-07 07:22:47,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:47,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:47,443 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 07:22:47,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:47,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1344028231, now seen corresponding path program 1 times [2021-11-07 07:22:47,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:47,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929720968] [2021-11-07 07:22:47,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:47,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:47,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:47,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:47,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929720968] [2021-11-07 07:22:47,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929720968] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:47,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864245042] [2021-11-07 07:22:47,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:47,496 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:47,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:47,498 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:47,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 07:22:47,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:47,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:22:47,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:47,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 07:22:47,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864245042] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:22:47,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:22:47,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2021-11-07 07:22:47,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460137692] [2021-11-07 07:22:47,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:22:47,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:47,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:22:47,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:22:47,671 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 60 [2021-11-07 07:22:47,671 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 70 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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) [2021-11-07 07:22:47,671 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 07:22:47,672 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 60 [2021-11-07 07:22:47,672 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 07:22:47,734 INFO L129 PetriNetUnfolder]: 58/287 cut-off events. [2021-11-07 07:22:47,734 INFO L130 PetriNetUnfolder]: For 141/143 co-relation queries the response was YES. [2021-11-07 07:22:47,736 INFO L84 FinitePrefix]: Finished finitePrefix Result has 603 conditions, 287 events. 58/287 cut-off events. For 141/143 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1411 event pairs, 17 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 596. Up to 100 conditions per place. [2021-11-07 07:22:47,738 INFO L132 encePairwiseOnDemand]: 54/60 looper letters, 20 selfloop transitions, 7 changer transitions 10/81 dead transitions. [2021-11-07 07:22:47,738 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 81 transitions, 346 flow [2021-11-07 07:22:47,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:22:47,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-07 07:22:47,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 156 transitions. [2021-11-07 07:22:47,739 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8666666666666667 [2021-11-07 07:22:47,740 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 156 transitions. [2021-11-07 07:22:47,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 156 transitions. [2021-11-07 07:22:47,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 07:22:47,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 156 transitions. [2021-11-07 07:22:47,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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) [2021-11-07 07:22:47,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 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) [2021-11-07 07:22:47,742 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 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) [2021-11-07 07:22:47,742 INFO L186 Difference]: Start difference. First operand has 69 places, 70 transitions, 224 flow. Second operand 3 states and 156 transitions. [2021-11-07 07:22:47,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 81 transitions, 346 flow [2021-11-07 07:22:47,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 81 transitions, 326 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-07 07:22:47,747 INFO L242 Difference]: Finished difference. Result has 71 places, 69 transitions, 242 flow [2021-11-07 07:22:47,748 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=71, PETRI_TRANSITIONS=69} [2021-11-07 07:22:47,748 INFO L334 CegarLoopForPetriNet]: 61 programPoint places, 10 predicate places. [2021-11-07 07:22:47,748 INFO L470 AbstractCegarLoop]: Abstraction has has 71 places, 69 transitions, 242 flow [2021-11-07 07:22:47,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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) [2021-11-07 07:22:47,748 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 07:22:47,749 INFO L254 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] [2021-11-07 07:22:47,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:47,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:47,977 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 07:22:47,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:47,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1731811677, now seen corresponding path program 1 times [2021-11-07 07:22:47,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:47,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188837082] [2021-11-07 07:22:47,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:47,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:47,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:48,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:48,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:48,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188837082] [2021-11-07 07:22:48,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188837082] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:48,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395477785] [2021-11-07 07:22:48,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:48,027 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:48,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:48,029 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:48,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 07:22:48,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:48,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 07:22:48,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:48,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:48,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395477785] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:48,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:48,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-11-07 07:22:48,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348856701] [2021-11-07 07:22:48,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 07:22:48,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:48,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 07:22:48,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-07 07:22:48,374 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 60 [2021-11-07 07:22:48,375 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 69 transitions, 242 flow. Second operand has 7 states, 7 states have (on average 52.857142857142854) internal successors, (370), 7 states have internal predecessors, (370), 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) [2021-11-07 07:22:48,388 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 07:22:48,388 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 60 [2021-11-07 07:22:48,389 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 07:22:48,488 INFO L129 PetriNetUnfolder]: 18/212 cut-off events. [2021-11-07 07:22:48,488 INFO L130 PetriNetUnfolder]: For 122/122 co-relation queries the response was YES. [2021-11-07 07:22:48,490 INFO L84 FinitePrefix]: Finished finitePrefix Result has 404 conditions, 212 events. 18/212 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 968 event pairs, 3 based on Foata normal form. 1/207 useless extension candidates. Maximal degree in co-relation 396. Up to 27 conditions per place. [2021-11-07 07:22:48,491 INFO L132 encePairwiseOnDemand]: 55/60 looper letters, 12 selfloop transitions, 5 changer transitions 0/77 dead transitions. [2021-11-07 07:22:48,491 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 77 transitions, 294 flow [2021-11-07 07:22:48,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 07:22:48,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-11-07 07:22:48,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 324 transitions. [2021-11-07 07:22:48,493 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9 [2021-11-07 07:22:48,493 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 324 transitions. [2021-11-07 07:22:48,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 324 transitions. [2021-11-07 07:22:48,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 07:22:48,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 324 transitions. [2021-11-07 07:22:48,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 54.0) internal successors, (324), 6 states have internal predecessors, (324), 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) [2021-11-07 07:22:48,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 60.0) internal successors, (420), 7 states have internal predecessors, (420), 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) [2021-11-07 07:22:48,503 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 60.0) internal successors, (420), 7 states have internal predecessors, (420), 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) [2021-11-07 07:22:48,503 INFO L186 Difference]: Start difference. First operand has 71 places, 69 transitions, 242 flow. Second operand 6 states and 324 transitions. [2021-11-07 07:22:48,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 77 transitions, 294 flow [2021-11-07 07:22:48,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 77 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-07 07:22:48,511 INFO L242 Difference]: Finished difference. Result has 77 places, 72 transitions, 260 flow [2021-11-07 07:22:48,511 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=260, PETRI_PLACES=77, PETRI_TRANSITIONS=72} [2021-11-07 07:22:48,511 INFO L334 CegarLoopForPetriNet]: 61 programPoint places, 16 predicate places. [2021-11-07 07:22:48,512 INFO L470 AbstractCegarLoop]: Abstraction has has 77 places, 72 transitions, 260 flow [2021-11-07 07:22:48,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.857142857142854) internal successors, (370), 7 states have internal predecessors, (370), 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) [2021-11-07 07:22:48,512 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 07:22:48,513 INFO L254 CegarLoopForPetriNet]: trace histogram [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] [2021-11-07 07:22:48,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:48,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:48,741 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 07:22:48,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:48,741 INFO L85 PathProgramCache]: Analyzing trace with hash 965754638, now seen corresponding path program 2 times [2021-11-07 07:22:48,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:48,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973375462] [2021-11-07 07:22:48,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:48,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:48,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:48,819 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:48,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:48,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973375462] [2021-11-07 07:22:48,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973375462] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:48,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943063883] [2021-11-07 07:22:48,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:22:48,821 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:48,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:48,837 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:48,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 07:22:48,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:22:48,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:48,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 07:22:48,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:49,162 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:49,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943063883] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:49,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:49,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-11-07 07:22:49,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305602782] [2021-11-07 07:22:49,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 07:22:49,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:49,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 07:22:49,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 07:22:49,166 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 60 [2021-11-07 07:22:49,167 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 72 transitions, 260 flow. Second operand has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 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) [2021-11-07 07:22:49,167 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 07:22:49,167 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 60 [2021-11-07 07:22:49,168 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 07:22:49,292 INFO L129 PetriNetUnfolder]: 18/217 cut-off events. [2021-11-07 07:22:49,292 INFO L130 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2021-11-07 07:22:49,293 INFO L84 FinitePrefix]: Finished finitePrefix Result has 410 conditions, 217 events. 18/217 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 972 event pairs, 3 based on Foata normal form. 1/212 useless extension candidates. Maximal degree in co-relation 399. Up to 27 conditions per place. [2021-11-07 07:22:49,294 INFO L132 encePairwiseOnDemand]: 55/60 looper letters, 14 selfloop transitions, 8 changer transitions 0/82 dead transitions. [2021-11-07 07:22:49,294 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 82 transitions, 334 flow [2021-11-07 07:22:49,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 07:22:49,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-07 07:22:49,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 482 transitions. [2021-11-07 07:22:49,297 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8925925925925926 [2021-11-07 07:22:49,298 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 482 transitions. [2021-11-07 07:22:49,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 482 transitions. [2021-11-07 07:22:49,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 07:22:49,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 482 transitions. [2021-11-07 07:22:49,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 53.55555555555556) internal successors, (482), 9 states have internal predecessors, (482), 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) [2021-11-07 07:22:49,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 60.0) internal successors, (600), 10 states have internal predecessors, (600), 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) [2021-11-07 07:22:49,303 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 60.0) internal successors, (600), 10 states have internal predecessors, (600), 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) [2021-11-07 07:22:49,303 INFO L186 Difference]: Start difference. First operand has 77 places, 72 transitions, 260 flow. Second operand 9 states and 482 transitions. [2021-11-07 07:22:49,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 82 transitions, 334 flow [2021-11-07 07:22:49,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 82 transitions, 328 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-11-07 07:22:49,313 INFO L242 Difference]: Finished difference. Result has 86 places, 75 transitions, 298 flow [2021-11-07 07:22:49,313 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=298, PETRI_PLACES=86, PETRI_TRANSITIONS=75} [2021-11-07 07:22:49,313 INFO L334 CegarLoopForPetriNet]: 61 programPoint places, 25 predicate places. [2021-11-07 07:22:49,314 INFO L470 AbstractCegarLoop]: Abstraction has has 86 places, 75 transitions, 298 flow [2021-11-07 07:22:49,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 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) [2021-11-07 07:22:49,315 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 07:22:49,315 INFO L254 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] [2021-11-07 07:22:49,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:49,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:49,529 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 07:22:49,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:49,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1826996855, now seen corresponding path program 3 times [2021-11-07 07:22:49,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:49,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274941758] [2021-11-07 07:22:49,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:49,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:49,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:49,640 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:49,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:49,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274941758] [2021-11-07 07:22:49,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274941758] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:49,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423156802] [2021-11-07 07:22:49,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:22:49,641 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:49,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:49,661 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:49,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 07:22:49,786 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-07 07:22:49,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:49,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 07:22:49,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:49,953 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:49,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423156802] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:49,953 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:49,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-11-07 07:22:49,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134865055] [2021-11-07 07:22:49,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 07:22:49,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:49,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 07:22:49,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-07 07:22:49,960 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 60 [2021-11-07 07:22:49,961 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 75 transitions, 298 flow. Second operand has 11 states, 11 states have (on average 53.09090909090909) internal successors, (584), 11 states have internal predecessors, (584), 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) [2021-11-07 07:22:49,961 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 07:22:49,961 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 60 [2021-11-07 07:22:49,961 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 07:22:50,119 INFO L129 PetriNetUnfolder]: 18/222 cut-off events. [2021-11-07 07:22:50,119 INFO L130 PetriNetUnfolder]: For 99/99 co-relation queries the response was YES. [2021-11-07 07:22:50,120 INFO L84 FinitePrefix]: Finished finitePrefix Result has 443 conditions, 222 events. 18/222 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 972 event pairs, 3 based on Foata normal form. 1/217 useless extension candidates. Maximal degree in co-relation 429. Up to 27 conditions per place. [2021-11-07 07:22:50,122 INFO L132 encePairwiseOnDemand]: 55/60 looper letters, 16 selfloop transitions, 11 changer transitions 0/87 dead transitions. [2021-11-07 07:22:50,122 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 87 transitions, 394 flow [2021-11-07 07:22:50,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 07:22:50,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-11-07 07:22:50,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 640 transitions. [2021-11-07 07:22:50,126 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2021-11-07 07:22:50,126 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 640 transitions. [2021-11-07 07:22:50,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 640 transitions. [2021-11-07 07:22:50,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 07:22:50,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 640 transitions. [2021-11-07 07:22:50,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 53.333333333333336) internal successors, (640), 12 states have internal predecessors, (640), 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) [2021-11-07 07:22:50,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 60.0) internal successors, (780), 13 states have internal predecessors, (780), 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) [2021-11-07 07:22:50,133 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 60.0) internal successors, (780), 13 states have internal predecessors, (780), 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) [2021-11-07 07:22:50,133 INFO L186 Difference]: Start difference. First operand has 86 places, 75 transitions, 298 flow. Second operand 12 states and 640 transitions. [2021-11-07 07:22:50,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 87 transitions, 394 flow [2021-11-07 07:22:50,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 87 transitions, 376 flow, removed 4 selfloop flow, removed 5 redundant places. [2021-11-07 07:22:50,142 INFO L242 Difference]: Finished difference. Result has 95 places, 78 transitions, 336 flow [2021-11-07 07:22:50,142 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=336, PETRI_PLACES=95, PETRI_TRANSITIONS=78} [2021-11-07 07:22:50,143 INFO L334 CegarLoopForPetriNet]: 61 programPoint places, 34 predicate places. [2021-11-07 07:22:50,143 INFO L470 AbstractCegarLoop]: Abstraction has has 95 places, 78 transitions, 336 flow [2021-11-07 07:22:50,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 53.09090909090909) internal successors, (584), 11 states have internal predecessors, (584), 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) [2021-11-07 07:22:50,144 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 07:22:50,144 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:50,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:50,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-07 07:22:50,369 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 07:22:50,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:50,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1814565154, now seen corresponding path program 4 times [2021-11-07 07:22:50,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:50,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695672594] [2021-11-07 07:22:50,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:50,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:50,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:50,508 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:50,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:50,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695672594] [2021-11-07 07:22:50,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695672594] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:50,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625137625] [2021-11-07 07:22:50,510 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:22:50,510 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:50,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:50,522 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:50,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 07:22:50,659 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:22:50,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:50,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 07:22:50,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:50,817 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:50,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625137625] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:50,817 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:50,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-11-07 07:22:50,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596775999] [2021-11-07 07:22:50,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 07:22:50,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:50,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 07:22:50,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-07 07:22:50,821 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 60 [2021-11-07 07:22:50,822 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 78 transitions, 336 flow. Second operand has 13 states, 13 states have (on average 53.15384615384615) internal successors, (691), 13 states have internal predecessors, (691), 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) [2021-11-07 07:22:50,822 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 07:22:50,822 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 60 [2021-11-07 07:22:50,822 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 07:22:51,005 INFO L129 PetriNetUnfolder]: 18/227 cut-off events. [2021-11-07 07:22:51,005 INFO L130 PetriNetUnfolder]: For 130/130 co-relation queries the response was YES. [2021-11-07 07:22:51,006 INFO L84 FinitePrefix]: Finished finitePrefix Result has 476 conditions, 227 events. 18/227 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 972 event pairs, 3 based on Foata normal form. 1/222 useless extension candidates. Maximal degree in co-relation 459. Up to 27 conditions per place. [2021-11-07 07:22:51,007 INFO L132 encePairwiseOnDemand]: 55/60 looper letters, 18 selfloop transitions, 14 changer transitions 0/92 dead transitions. [2021-11-07 07:22:51,007 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 92 transitions, 454 flow [2021-11-07 07:22:51,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 07:22:51,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-11-07 07:22:51,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 798 transitions. [2021-11-07 07:22:51,011 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8866666666666667 [2021-11-07 07:22:51,011 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 798 transitions. [2021-11-07 07:22:51,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 798 transitions. [2021-11-07 07:22:51,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 07:22:51,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 798 transitions. [2021-11-07 07:22:51,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 53.2) internal successors, (798), 15 states have internal predecessors, (798), 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) [2021-11-07 07:22:51,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 60.0) internal successors, (960), 16 states have internal predecessors, (960), 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) [2021-11-07 07:22:51,017 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 60.0) internal successors, (960), 16 states have internal predecessors, (960), 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) [2021-11-07 07:22:51,018 INFO L186 Difference]: Start difference. First operand has 95 places, 78 transitions, 336 flow. Second operand 15 states and 798 transitions. [2021-11-07 07:22:51,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 92 transitions, 454 flow [2021-11-07 07:22:51,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 92 transitions, 424 flow, removed 7 selfloop flow, removed 8 redundant places. [2021-11-07 07:22:51,023 INFO L242 Difference]: Finished difference. Result has 104 places, 81 transitions, 374 flow [2021-11-07 07:22:51,023 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=374, PETRI_PLACES=104, PETRI_TRANSITIONS=81} [2021-11-07 07:22:51,024 INFO L334 CegarLoopForPetriNet]: 61 programPoint places, 43 predicate places. [2021-11-07 07:22:51,024 INFO L470 AbstractCegarLoop]: Abstraction has has 104 places, 81 transitions, 374 flow [2021-11-07 07:22:51,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 53.15384615384615) internal successors, (691), 13 states have internal predecessors, (691), 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) [2021-11-07 07:22:51,024 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 07:22:51,025 INFO L254 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:51,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:51,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:51,243 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 07:22:51,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:51,243 INFO L85 PathProgramCache]: Analyzing trace with hash -470600361, now seen corresponding path program 5 times [2021-11-07 07:22:51,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:51,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748977391] [2021-11-07 07:22:51,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:51,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:51,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:51,369 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:51,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:51,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748977391] [2021-11-07 07:22:51,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748977391] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:51,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467678725] [2021-11-07 07:22:51,370 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:22:51,370 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:51,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:51,371 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:51,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 07:22:51,519 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-11-07 07:22:51,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:51,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 07:22:51,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:51,713 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:51,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467678725] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:51,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:51,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-11-07 07:22:51,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588859569] [2021-11-07 07:22:51,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 07:22:51,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:51,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 07:22:51,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-11-07 07:22:51,717 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 60 [2021-11-07 07:22:51,718 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 81 transitions, 374 flow. Second operand has 15 states, 15 states have (on average 53.2) internal successors, (798), 15 states have internal predecessors, (798), 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) [2021-11-07 07:22:51,718 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 07:22:51,718 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 60 [2021-11-07 07:22:51,718 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 07:22:51,908 INFO L129 PetriNetUnfolder]: 18/232 cut-off events. [2021-11-07 07:22:51,909 INFO L130 PetriNetUnfolder]: For 173/173 co-relation queries the response was YES. [2021-11-07 07:22:51,910 INFO L84 FinitePrefix]: Finished finitePrefix Result has 509 conditions, 232 events. 18/232 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 972 event pairs, 3 based on Foata normal form. 1/227 useless extension candidates. Maximal degree in co-relation 489. Up to 27 conditions per place. [2021-11-07 07:22:51,911 INFO L132 encePairwiseOnDemand]: 55/60 looper letters, 20 selfloop transitions, 17 changer transitions 0/97 dead transitions. [2021-11-07 07:22:51,911 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 97 transitions, 514 flow [2021-11-07 07:22:51,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 07:22:51,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-11-07 07:22:51,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 956 transitions. [2021-11-07 07:22:51,916 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8851851851851852 [2021-11-07 07:22:51,916 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 956 transitions. [2021-11-07 07:22:51,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 956 transitions. [2021-11-07 07:22:51,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 07:22:51,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 956 transitions. [2021-11-07 07:22:51,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 53.111111111111114) internal successors, (956), 18 states have internal predecessors, (956), 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) [2021-11-07 07:22:51,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 60.0) internal successors, (1140), 19 states have internal predecessors, (1140), 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) [2021-11-07 07:22:51,924 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 60.0) internal successors, (1140), 19 states have internal predecessors, (1140), 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) [2021-11-07 07:22:51,925 INFO L186 Difference]: Start difference. First operand has 104 places, 81 transitions, 374 flow. Second operand 18 states and 956 transitions. [2021-11-07 07:22:51,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 97 transitions, 514 flow [2021-11-07 07:22:51,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 97 transitions, 472 flow, removed 10 selfloop flow, removed 11 redundant places. [2021-11-07 07:22:51,930 INFO L242 Difference]: Finished difference. Result has 113 places, 84 transitions, 412 flow [2021-11-07 07:22:51,931 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=412, PETRI_PLACES=113, PETRI_TRANSITIONS=84} [2021-11-07 07:22:51,931 INFO L334 CegarLoopForPetriNet]: 61 programPoint places, 52 predicate places. [2021-11-07 07:22:51,931 INFO L470 AbstractCegarLoop]: Abstraction has has 113 places, 84 transitions, 412 flow [2021-11-07 07:22:51,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 53.2) internal successors, (798), 15 states have internal predecessors, (798), 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) [2021-11-07 07:22:51,932 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 07:22:51,933 INFO L254 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:51,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:52,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:52,149 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 07:22:52,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:52,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1542416962, now seen corresponding path program 6 times [2021-11-07 07:22:52,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:52,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201107253] [2021-11-07 07:22:52,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:52,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:52,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:52,332 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:52,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:52,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201107253] [2021-11-07 07:22:52,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201107253] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:52,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839507781] [2021-11-07 07:22:52,334 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:22:52,334 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:52,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:52,340 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:52,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-07 07:22:52,532 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-11-07 07:22:52,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:52,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-07 07:22:52,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:52,756 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:52,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839507781] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:52,756 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:52,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-11-07 07:22:52,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947208807] [2021-11-07 07:22:52,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-07 07:22:52,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:52,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-07 07:22:52,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-07 07:22:52,761 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 60 [2021-11-07 07:22:52,762 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 84 transitions, 412 flow. Second operand has 17 states, 17 states have (on average 53.23529411764706) internal successors, (905), 17 states have internal predecessors, (905), 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) [2021-11-07 07:22:52,762 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 07:22:52,762 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 60 [2021-11-07 07:22:52,763 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 07:22:52,987 INFO L129 PetriNetUnfolder]: 18/237 cut-off events. [2021-11-07 07:22:52,987 INFO L130 PetriNetUnfolder]: For 228/228 co-relation queries the response was YES. [2021-11-07 07:22:52,988 INFO L84 FinitePrefix]: Finished finitePrefix Result has 542 conditions, 237 events. 18/237 cut-off events. For 228/228 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 972 event pairs, 3 based on Foata normal form. 1/232 useless extension candidates. Maximal degree in co-relation 519. Up to 27 conditions per place. [2021-11-07 07:22:52,989 INFO L132 encePairwiseOnDemand]: 55/60 looper letters, 22 selfloop transitions, 20 changer transitions 0/102 dead transitions. [2021-11-07 07:22:52,989 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 102 transitions, 574 flow [2021-11-07 07:22:52,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-07 07:22:52,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-11-07 07:22:52,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1114 transitions. [2021-11-07 07:22:52,995 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8841269841269841 [2021-11-07 07:22:52,995 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1114 transitions. [2021-11-07 07:22:52,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1114 transitions. [2021-11-07 07:22:52,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 07:22:52,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1114 transitions. [2021-11-07 07:22:53,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 53.04761904761905) internal successors, (1114), 21 states have internal predecessors, (1114), 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) [2021-11-07 07:22:53,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 60.0) internal successors, (1320), 22 states have internal predecessors, (1320), 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) [2021-11-07 07:22:53,005 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 60.0) internal successors, (1320), 22 states have internal predecessors, (1320), 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) [2021-11-07 07:22:53,005 INFO L186 Difference]: Start difference. First operand has 113 places, 84 transitions, 412 flow. Second operand 21 states and 1114 transitions. [2021-11-07 07:22:53,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 102 transitions, 574 flow [2021-11-07 07:22:53,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 102 transitions, 520 flow, removed 13 selfloop flow, removed 14 redundant places. [2021-11-07 07:22:53,012 INFO L242 Difference]: Finished difference. Result has 122 places, 87 transitions, 450 flow [2021-11-07 07:22:53,013 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=450, PETRI_PLACES=122, PETRI_TRANSITIONS=87} [2021-11-07 07:22:53,013 INFO L334 CegarLoopForPetriNet]: 61 programPoint places, 61 predicate places. [2021-11-07 07:22:53,013 INFO L470 AbstractCegarLoop]: Abstraction has has 122 places, 87 transitions, 450 flow [2021-11-07 07:22:53,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 53.23529411764706) internal successors, (905), 17 states have internal predecessors, (905), 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) [2021-11-07 07:22:53,014 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 07:22:53,014 INFO L254 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] [2021-11-07 07:22:53,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:53,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-07 07:22:53,241 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 07:22:53,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:53,241 INFO L85 PathProgramCache]: Analyzing trace with hash -831090633, now seen corresponding path program 7 times [2021-11-07 07:22:53,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:53,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542010903] [2021-11-07 07:22:53,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:53,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:53,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:53,407 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:53,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:53,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542010903] [2021-11-07 07:22:53,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542010903] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:53,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903218310] [2021-11-07 07:22:53,408 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:22:53,408 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:53,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:53,410 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:53,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-07 07:22:53,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:53,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-07 07:22:53,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:53,835 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:53,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903218310] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:53,836 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:53,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-11-07 07:22:53,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121866749] [2021-11-07 07:22:53,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-07 07:22:53,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:53,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-07 07:22:53,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-11-07 07:22:53,840 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 60 [2021-11-07 07:22:53,842 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 87 transitions, 450 flow. Second operand has 19 states, 19 states have (on average 53.26315789473684) internal successors, (1012), 19 states have internal predecessors, (1012), 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) [2021-11-07 07:22:53,842 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 07:22:53,842 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 60 [2021-11-07 07:22:53,842 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 07:22:54,137 INFO L129 PetriNetUnfolder]: 18/242 cut-off events. [2021-11-07 07:22:54,137 INFO L130 PetriNetUnfolder]: For 295/295 co-relation queries the response was YES. [2021-11-07 07:22:54,138 INFO L84 FinitePrefix]: Finished finitePrefix Result has 575 conditions, 242 events. 18/242 cut-off events. For 295/295 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 972 event pairs, 3 based on Foata normal form. 1/237 useless extension candidates. Maximal degree in co-relation 549. Up to 27 conditions per place. [2021-11-07 07:22:54,139 INFO L132 encePairwiseOnDemand]: 55/60 looper letters, 24 selfloop transitions, 23 changer transitions 0/107 dead transitions. [2021-11-07 07:22:54,139 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 107 transitions, 634 flow [2021-11-07 07:22:54,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-07 07:22:54,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-11-07 07:22:54,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1272 transitions. [2021-11-07 07:22:54,145 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8833333333333333 [2021-11-07 07:22:54,145 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1272 transitions. [2021-11-07 07:22:54,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1272 transitions. [2021-11-07 07:22:54,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 07:22:54,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1272 transitions. [2021-11-07 07:22:54,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 53.0) internal successors, (1272), 24 states have internal predecessors, (1272), 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) [2021-11-07 07:22:54,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 60.0) internal successors, (1500), 25 states have internal predecessors, (1500), 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) [2021-11-07 07:22:54,156 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 60.0) internal successors, (1500), 25 states have internal predecessors, (1500), 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) [2021-11-07 07:22:54,156 INFO L186 Difference]: Start difference. First operand has 122 places, 87 transitions, 450 flow. Second operand 24 states and 1272 transitions. [2021-11-07 07:22:54,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 107 transitions, 634 flow [2021-11-07 07:22:54,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 107 transitions, 568 flow, removed 16 selfloop flow, removed 17 redundant places. [2021-11-07 07:22:54,163 INFO L242 Difference]: Finished difference. Result has 131 places, 90 transitions, 488 flow [2021-11-07 07:22:54,164 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=488, PETRI_PLACES=131, PETRI_TRANSITIONS=90} [2021-11-07 07:22:54,164 INFO L334 CegarLoopForPetriNet]: 61 programPoint places, 70 predicate places. [2021-11-07 07:22:54,164 INFO L470 AbstractCegarLoop]: Abstraction has has 131 places, 90 transitions, 488 flow [2021-11-07 07:22:54,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 53.26315789473684) internal successors, (1012), 19 states have internal predecessors, (1012), 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) [2021-11-07 07:22:54,165 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 07:22:54,166 INFO L254 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:54,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:54,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-07 07:22:54,393 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 07:22:54,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:54,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1649288350, now seen corresponding path program 8 times [2021-11-07 07:22:54,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:54,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143091062] [2021-11-07 07:22:54,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:54,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:54,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:54,613 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:54,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:54,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143091062] [2021-11-07 07:22:54,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143091062] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:54,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020602181] [2021-11-07 07:22:54,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:22:54,614 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:54,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:54,618 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:54,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-07 07:22:54,831 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:22:54,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:54,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 07:22:54,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:55,110 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:55,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020602181] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:55,110 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:55,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2021-11-07 07:22:55,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404913075] [2021-11-07 07:22:55,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-07 07:22:55,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:55,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-07 07:22:55,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-11-07 07:22:55,117 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 60 [2021-11-07 07:22:55,119 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 90 transitions, 488 flow. Second operand has 21 states, 21 states have (on average 53.285714285714285) internal successors, (1119), 21 states have internal predecessors, (1119), 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) [2021-11-07 07:22:55,119 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 07:22:55,120 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 60 [2021-11-07 07:22:55,120 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 07:22:55,444 INFO L129 PetriNetUnfolder]: 18/247 cut-off events. [2021-11-07 07:22:55,444 INFO L130 PetriNetUnfolder]: For 374/374 co-relation queries the response was YES. [2021-11-07 07:22:55,445 INFO L84 FinitePrefix]: Finished finitePrefix Result has 608 conditions, 247 events. 18/247 cut-off events. For 374/374 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 972 event pairs, 3 based on Foata normal form. 1/242 useless extension candidates. Maximal degree in co-relation 579. Up to 27 conditions per place. [2021-11-07 07:22:55,446 INFO L132 encePairwiseOnDemand]: 55/60 looper letters, 26 selfloop transitions, 26 changer transitions 0/112 dead transitions. [2021-11-07 07:22:55,447 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 112 transitions, 694 flow [2021-11-07 07:22:55,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-07 07:22:55,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-11-07 07:22:55,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1430 transitions. [2021-11-07 07:22:55,451 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8827160493827161 [2021-11-07 07:22:55,451 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1430 transitions. [2021-11-07 07:22:55,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1430 transitions. [2021-11-07 07:22:55,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 07:22:55,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1430 transitions. [2021-11-07 07:22:55,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 52.96296296296296) internal successors, (1430), 27 states have internal predecessors, (1430), 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) [2021-11-07 07:22:55,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 60.0) internal successors, (1680), 28 states have internal predecessors, (1680), 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) [2021-11-07 07:22:55,464 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 60.0) internal successors, (1680), 28 states have internal predecessors, (1680), 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) [2021-11-07 07:22:55,465 INFO L186 Difference]: Start difference. First operand has 131 places, 90 transitions, 488 flow. Second operand 27 states and 1430 transitions. [2021-11-07 07:22:55,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 112 transitions, 694 flow [2021-11-07 07:22:55,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 112 transitions, 616 flow, removed 19 selfloop flow, removed 20 redundant places. [2021-11-07 07:22:55,478 INFO L242 Difference]: Finished difference. Result has 140 places, 93 transitions, 526 flow [2021-11-07 07:22:55,479 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=526, PETRI_PLACES=140, PETRI_TRANSITIONS=93} [2021-11-07 07:22:55,479 INFO L334 CegarLoopForPetriNet]: 61 programPoint places, 79 predicate places. [2021-11-07 07:22:55,479 INFO L470 AbstractCegarLoop]: Abstraction has has 140 places, 93 transitions, 526 flow [2021-11-07 07:22:55,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 53.285714285714285) internal successors, (1119), 21 states have internal predecessors, (1119), 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) [2021-11-07 07:22:55,480 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 07:22:55,481 INFO L254 CegarLoopForPetriNet]: trace histogram [9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:55,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:55,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:55,697 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 07:22:55,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:55,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1613615895, now seen corresponding path program 9 times [2021-11-07 07:22:55,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:55,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631172867] [2021-11-07 07:22:55,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:55,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:55,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:55,932 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:55,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:55,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631172867] [2021-11-07 07:22:55,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631172867] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:55,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967839844] [2021-11-07 07:22:55,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:22:55,933 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:55,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:55,934 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:55,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-07 07:22:56,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-11-07 07:22:56,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:56,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-07 07:22:56,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:56,574 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:56,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967839844] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:56,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:56,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-11-07 07:22:56,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702521791] [2021-11-07 07:22:56,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 07:22:56,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:56,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 07:22:56,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-11-07 07:22:56,578 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 60 [2021-11-07 07:22:56,580 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 93 transitions, 526 flow. Second operand has 23 states, 23 states have (on average 53.30434782608695) internal successors, (1226), 23 states have internal predecessors, (1226), 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) [2021-11-07 07:22:56,580 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 07:22:56,580 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 60 [2021-11-07 07:22:56,581 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 07:22:56,924 INFO L129 PetriNetUnfolder]: 18/249 cut-off events. [2021-11-07 07:22:56,924 INFO L130 PetriNetUnfolder]: For 401/401 co-relation queries the response was YES. [2021-11-07 07:22:56,925 INFO L84 FinitePrefix]: Finished finitePrefix Result has 618 conditions, 249 events. 18/249 cut-off events. For 401/401 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 967 event pairs, 3 based on Foata normal form. 1/244 useless extension candidates. Maximal degree in co-relation 586. Up to 27 conditions per place. [2021-11-07 07:22:56,926 INFO L132 encePairwiseOnDemand]: 54/60 looper letters, 24 selfloop transitions, 30 changer transitions 0/114 dead transitions. [2021-11-07 07:22:56,927 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 114 transitions, 708 flow [2021-11-07 07:22:56,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-07 07:22:56,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-11-07 07:22:56,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1585 transitions. [2021-11-07 07:22:56,931 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8805555555555555 [2021-11-07 07:22:56,931 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1585 transitions. [2021-11-07 07:22:56,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1585 transitions. [2021-11-07 07:22:56,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 07:22:56,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1585 transitions. [2021-11-07 07:22:56,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 52.833333333333336) internal successors, (1585), 30 states have internal predecessors, (1585), 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) [2021-11-07 07:22:56,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 60.0) internal successors, (1860), 31 states have internal predecessors, (1860), 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) [2021-11-07 07:22:56,941 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 60.0) internal successors, (1860), 31 states have internal predecessors, (1860), 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) [2021-11-07 07:22:56,942 INFO L186 Difference]: Start difference. First operand has 140 places, 93 transitions, 526 flow. Second operand 30 states and 1585 transitions. [2021-11-07 07:22:56,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 114 transitions, 708 flow [2021-11-07 07:22:56,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 114 transitions, 618 flow, removed 22 selfloop flow, removed 23 redundant places. [2021-11-07 07:22:56,950 INFO L242 Difference]: Finished difference. Result has 150 places, 96 transitions, 552 flow [2021-11-07 07:22:56,951 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=552, PETRI_PLACES=150, PETRI_TRANSITIONS=96} [2021-11-07 07:22:56,951 INFO L334 CegarLoopForPetriNet]: 61 programPoint places, 89 predicate places. [2021-11-07 07:22:56,951 INFO L470 AbstractCegarLoop]: Abstraction has has 150 places, 96 transitions, 552 flow [2021-11-07 07:22:56,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 53.30434782608695) internal successors, (1226), 23 states have internal predecessors, (1226), 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) [2021-11-07 07:22:56,952 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 07:22:56,953 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:56,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:57,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-07 07:22:57,169 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-11-07 07:22:57,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:57,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1536072574, now seen corresponding path program 10 times [2021-11-07 07:22:57,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:57,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670858684] [2021-11-07 07:22:57,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:57,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:57,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 07:22:57,191 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 07:22:57,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 07:22:57,236 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 07:22:57,236 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 07:22:57,237 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE [2021-11-07 07:22:57,239 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE [2021-11-07 07:22:57,240 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-11-07 07:22:57,240 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE [2021-11-07 07:22:57,240 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE [2021-11-07 07:22:57,241 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE [2021-11-07 07:22:57,241 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE [2021-11-07 07:22:57,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-07 07:22:57,249 INFO L731 BasicCegarLoop]: Path program histogram: [10, 1, 1, 1, 1, 1] [2021-11-07 07:22:57,256 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-07 07:22:57,256 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 07:22:57,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 07:22:57 BasicIcfg [2021-11-07 07:22:57,319 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 07:22:57,319 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 07:22:57,320 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 07:22:57,320 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 07:22:57,320 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:22:45" (3/4) ... [2021-11-07 07:22:57,323 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 07:22:57,323 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 07:22:57,325 INFO L168 Benchmark]: Toolchain (without parser) took 13121.85 ms. Allocated memory was 98.6 MB in the beginning and 155.2 MB in the end (delta: 56.6 MB). Free memory was 65.8 MB in the beginning and 98.6 MB in the end (delta: -32.8 MB). Peak memory consumption was 24.3 MB. Max. memory is 16.1 GB. [2021-11-07 07:22:57,325 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 98.6 MB. Free memory is still 53.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 07:22:57,326 INFO L168 Benchmark]: CACSL2BoogieTranslator took 501.34 ms. Allocated memory was 98.6 MB in the beginning and 127.9 MB in the end (delta: 29.4 MB). Free memory was 65.6 MB in the beginning and 94.2 MB in the end (delta: -28.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 07:22:57,326 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.09 ms. Allocated memory is still 127.9 MB. Free memory was 94.2 MB in the beginning and 92.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 07:22:57,326 INFO L168 Benchmark]: Boogie Preprocessor took 34.47 ms. Allocated memory is still 127.9 MB. Free memory was 92.1 MB in the beginning and 91.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 07:22:57,327 INFO L168 Benchmark]: RCFGBuilder took 464.52 ms. Allocated memory is still 127.9 MB. Free memory was 90.5 MB in the beginning and 79.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 07:22:57,327 INFO L168 Benchmark]: TraceAbstraction took 12065.42 ms. Allocated memory was 127.9 MB in the beginning and 155.2 MB in the end (delta: 27.3 MB). Free memory was 79.4 MB in the beginning and 98.6 MB in the end (delta: -19.3 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. [2021-11-07 07:22:57,327 INFO L168 Benchmark]: Witness Printer took 3.97 ms. Allocated memory is still 155.2 MB. Free memory is still 98.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 07:22:57,330 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 98.6 MB. Free memory is still 53.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 501.34 ms. Allocated memory was 98.6 MB in the beginning and 127.9 MB in the end (delta: 29.4 MB). Free memory was 65.6 MB in the beginning and 94.2 MB in the end (delta: -28.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.09 ms. Allocated memory is still 127.9 MB. Free memory was 94.2 MB in the beginning and 92.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.47 ms. Allocated memory is still 127.9 MB. Free memory was 92.1 MB in the beginning and 91.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 464.52 ms. Allocated memory is still 127.9 MB. Free memory was 90.5 MB in the beginning and 79.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12065.42 ms. Allocated memory was 127.9 MB in the beginning and 155.2 MB in the end (delta: 27.3 MB). Free memory was 79.4 MB in the beginning and 98.6 MB in the end (delta: -19.3 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. * Witness Printer took 3.97 ms. Allocated memory is still 155.2 MB. Free memory is still 98.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - DataRaceFoundResult [Line: 693]: Data race detected Data race detected The following path leads to a data race: [L679] 0 int data; VAL [data=0] [L680] 0 pthread_mutex_t m[10]; VAL [data=0, m={3:0}] [L688] 0 int i = 0; VAL [data=0, m={3:0}] [L688] COND TRUE 0 i < 10 VAL [data=0, m={3:0}] [L688] 0 i++ VAL [data=0, m={3:0}] [L688] COND TRUE 0 i < 10 VAL [data=0, m={3:0}] [L688] 0 i++ VAL [data=0, m={3:0}] [L688] COND TRUE 0 i < 10 VAL [data=0, m={3:0}] [L688] 0 i++ VAL [data=0, m={3:0}] [L688] COND TRUE 0 i < 10 VAL [data=0, m={3:0}] [L688] 0 i++ VAL [data=0, m={3:0}] [L688] COND TRUE 0 i < 10 VAL [data=0, m={3:0}] [L688] 0 i++ VAL [data=0, m={3:0}] [L688] COND TRUE 0 i < 10 VAL [data=0, m={3:0}] [L688] 0 i++ VAL [data=0, m={3:0}] [L688] COND TRUE 0 i < 10 VAL [data=0, m={3:0}] [L688] 0 i++ VAL [data=0, m={3:0}] [L688] COND TRUE 0 i < 10 VAL [data=0, m={3:0}] [L688] 0 i++ VAL [data=0, m={3:0}] [L688] COND TRUE 0 i < 10 VAL [data=0, m={3:0}] [L688] 0 i++ VAL [data=0, m={3:0}] [L688] COND TRUE 0 i < 10 VAL [data=0, m={3:0}] [L688] 0 i++ VAL [data=0, m={3:0}] [L688] COND FALSE 0 !(i < 10) VAL [data=0, m={3:0}] [L690] 0 pthread_t id; VAL [data=0, m={3:0}] [L691] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [arg={0:0}, data=0, m={3:0}] [L683] 1 data++ VAL [arg={0:0}, arg={0:0}, data=0, m={3:0}] [L693] 0 data++ VAL [arg={0:0}, arg={0:0}, data=0, m={3:0}] [L683] 1 data++ VAL [arg={0:0}, arg={0:0}, data=1, data++=241, data++=0, m={3:0}] [L693] 0 data++ VAL [arg={0:0}, arg={0:0}, data=1, data++=241, data++=0, m={3:0}] Now there is a data race on ~data~0 between C: data++ [683] and C: data++ [693] - UnprovableResult [Line: 693]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 691]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 683]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 683]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 78 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 11.8s, OverallIterations: 15, TraceHistogramMax: 10, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 82 SDtfs, 232 SDslu, 97 SDs, 0 SdLazy, 544 SolverSat, 108 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 796 GetRequests, 576 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1115 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=552occurred in iteration=14, InterpolantAutomatonStates: 176, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 1282 NumberOfCodeBlocks, 1275 NumberOfCodeBlocksAsserted, 52 NumberOfCheckSat, 1176 ConstructedInterpolants, 0 QuantifiedInterpolants, 2156 SizeOfPredicates, 90 NumberOfNonLiveVariables, 1197 ConjunctsInSsa, 117 ConjunctsInUnsatCore, 26 InterpolantComputations, 5 PerfectInterpolantSequences, 3/1296 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-07 07:22:57,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e036eb1-b847-4929-8a90-6301e139b80d/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE